Controlling device and method of Vacuum refrigerator

专利摘要:
An object of the present invention is to maintain the food storage chamber in a predetermined vacuum state by evacuating the air in the food storage chamber so that food stored in the air is not oxidized by oxygen in the air. To this end, the present invention according to the first aspect is provided with a refrigerator compartment and a freezing compartment on the cold air flow path to store or refrigerated food, the vacuum chamber is provided on the cold air flow path and formed with a space to accommodate the food and It provides a vacuum refrigerator comprising a vacuum pump for exhausting the air in the vacuum chamber to the outside, and a control device for controlling the vacuum pump to maintain a constant degree of vacuum in the vacuum chamber. The present invention according to the second aspect detects the time taken for the pressure in the vacuum chamber to reach the predetermined maximum pressure, the optimum pressure and the minimum pressure, respectively, when the vacuum pump is driven and stopped. A step for obtaining the inclination of each; The pressure in the vacuum chamber is reset by controlling the vacuum pump according to the reset time by resetting each pressure and each time on the basis of the optimum pressure so as to have the same slope as each slope obtained in the step A. It provides a method for controlling the vacuum refrigerator according to the first form comprising a step B to maintain.
公开号:KR20020047536A
申请号:KR1020000076007
申请日:2000-12-13
公开日:2002-06-22
发明作者:박진구；서상호；김양규；곽태희；정의엽；김세영；황인영；박준형
申请人:구자홍；엘지전자주식회사；
IPC主号:

专利说明:

Control device and method of vacuum refrigerator {Controlling device and method of Vacuum refrigerator}
[21] The present invention relates to a vacuum refrigerator, and more particularly, to prevent food from being oxidized by oxygen in the air, by evacuating the air in the food storage chamber to keep the food storage chamber in a predetermined vacuum state so that food can be stored for a long time. It is.
[22] Conventional refrigerators are generally divided into a freezer compartment and a refrigerating compartment to store food in a low temperature state by blowing cold air cooled in an evaporator into a freezer compartment and a refrigerating compartment by driving a fan installed at the back of the freezer compartment. Due to the oxidation of the stored food is promoted there was a problem that can not be stored for a long time due to the food being stored.
[23] SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and an object thereof is to maintain the food storage chamber in a predetermined vacuum state by exhausting the air in the food storage chamber so that the food stored in the air is not oxidized.
[1] 1 is a perspective view showing the appearance of a vacuum refrigerator according to the present invention.
[2] Figure 2 is a cross-sectional view showing the components of the vacuum refrigerator according to the present invention.
[3] Figure 3 is a block diagram showing a control device according to the present invention.
[4] Figure 4 is a block diagram showing in detail the microcomputer according to the present invention.
[5] 5 is a graph showing the slope with respect to the pressure and time represented by the control device according to the present invention and the vacuum degree using the same.
[6] Explanation of symbols for main parts of the drawings
[7] 1: cold flow path 10: cold storage room
[8] 20: freezing chamber 30: vacuum chamber
[9] 40: vacuum pump 50: pressure detector
[10] 51: low pressure detection pressure switch 52: optimum pressure detection pressure switch
[11] 53: high pressure pressure switch 60: micom
[12] 61: timer 62: memory section
[13] 63: control unit Ph: maximum pressure
[14] Pd: Optimal pressure Pl: Minimum pressure
[15] t1: first time t2: second time
[16] t3: third time t4: fourth time
[17] A: first slope B: second slope
[18] C: third slope D: fourth slope
[19] t1 ': first' time t2 ': second' time
[20] t3 ': third' time t4 ': fourth' time
[24] In order to achieve the above object, the present invention according to the first aspect is provided with a refrigerating chamber and a freezing chamber on the cold air flow path to refrigerated or frozen storage of food, the space is provided on the cold air flow path to put the food It provides a vacuum refrigerator comprising a vacuum chamber formed, a vacuum pump for exhausting the air in the vacuum chamber to the outside, and a control device for controlling the vacuum pump to maintain a constant degree of vacuum in the vacuum chamber.
[25] The present invention according to the second aspect detects the time taken for the pressure in the vacuum chamber to reach the predetermined maximum pressure, the optimum pressure and the minimum pressure, respectively, when the vacuum pump is driven and stopped. A step for obtaining the inclination of each; The pressure in the vacuum chamber is reset by controlling the vacuum pump according to the reset time by resetting each pressure and each time on the basis of the optimum pressure so as to have the same slope as each slope obtained in the step A. It provides a method for controlling the vacuum refrigerator according to the first form comprising a step B to maintain.
[26] Referring to the drawings to describe the above content in more detail as follows.
[27] 1 is a perspective view showing the appearance of a vacuum refrigerator according to the present invention, Figure 2 is a cross-sectional view showing the components of the vacuum refrigerator according to the present invention, Figure 3 is a block diagram showing a control device according to the invention, Figure 4 Is a block diagram showing the microcomputer according to the present invention in detail, Figure 5 is a graph of the slope and the degree of vacuum retention using the pressure and time shown by the control device according to the present invention.
[28] In the vacuum refrigerator according to the first aspect of the present invention, as shown in FIGS. 1 and 2, the refrigerator compartment 10 and the freezer compartment 20 are provided on the cold air passage 1 so as to refrigerate or freeze the food. A vacuum chamber 30 provided on the cold air flow path and having a space therein to accommodate the food, a vacuum pump 40 for exhausting air in the vacuum chamber to the outside, and the vacuum pump controlled to control the vacuum chamber. A control device for maintaining a constant degree of vacuum inside is included.
[29] At this time, the vacuum chamber is provided in the refrigerating chamber 10, as shown in Figure 1 and 2, may be formed integrally with the inner wall of the refrigerating chamber, or may be detachably provided with the inner wall of the refrigerating chamber. . In addition, although not shown, the entire refrigerating chamber 10 may be a vacuum chamber 30, and the entire cold air passage 1 including the freezing chamber 20 and the refrigerating chamber 10 may be a vacuum chamber 30. have.
[30] As shown in FIGS. 2 and 3, the control device includes a pressure detector 50 generating a signal according to a predetermined maximum pressure, an optimum pressure, and a minimum pressure such that the degree of vacuum in the vacuum chamber 30 is maintained. And a microcomputer 60 for turning on / off the vacuum pump according to the output signal of the pressure detector.
[31] Here, the pressure detection unit, as shown in Figure 3, the high-pressure recognition pressure switch 51 for generating a signal when the pressure in the vacuum chamber 30 reaches a predetermined maximum pressure, and the pressure in the vacuum chamber is Preferably, the pressure switch 52 is configured to generate a signal when the preset optimum pressure is reached, and the pressure switch 53 generates a signal when the pressure in the vacuum chamber reaches a preset minimum pressure. Do.
[32] In addition, as shown in FIG. 4, the microcomputer 60 includes a timer 61 for checking a time taken for the pressure in the vacuum chamber 30 to reach the respective pressures; Storing each time checked by the timer, and using each of the pressures and the respective slopes obtained by the respective times, the respective pressures and the angles based on the optimum pressure to have the same slope as the respective slopes. A memory section 62 for resetting the time; Preferably, the memory unit includes a control unit 63 for turning on / off the vacuum pump 40 according to the reset pressure and the time.
[33] The vacuum refrigerator and the control device for controlling the same made as described above is to perform the operation by the following control method.
[34] In the control method of the vacuum refrigerator according to the second embodiment of the present invention, as shown in FIG. 5, when the vacuum pump 40 is driven and stopped, the pressure in the vacuum chamber 30 is optimal with a predetermined maximum pressure Ph. Detecting the time taken to reach the pressure Pd and the lowest pressure Pl, respectively, and calculating the inclination between the respective times and the respective pressures; The pressure and the time are reset on the basis of the optimum pressure Pd so as to have the same slope as the slope obtained in the step A, and the vacuum pump 40 is controlled according to the reset time. Step B is included to maintain the pressure within 30) at each reset pressure.
[35] At this time, in step A, as shown in FIG. 5, when the vacuum pump 40 is driven, the timer 61 starts when the pressure in the vacuum chamber 30 reaches a predetermined maximum pressure Ph. A start step of starting to detect time; Obtaining a first slope A with respect to time and pressure by measuring a first time t1 required for the pressure in the vacuum chamber 30 to reach a predetermined optimum pressure Pd from the start step; ; After the first time t1 is measured, a second time t2 is required until the pressure in the vacuum chamber 30 reaches a predetermined minimum pressure P1, thereby measuring a second time and pressure. Comprising a step (B) is obtained.
[36] In addition, when the pressure in the vacuum chamber 30 reaches a predetermined minimum pressure Pl, the driving of the vacuum pump 40 is stopped and at the same time, after the second time t2 is measured, the vacuum chamber ( Determining a third slope C with respect to time and pressure by measuring a third time t3 required for the pressure in 30) to reach a predetermined optimum pressure Pd; After the third time t3 is measured, a fourth time t4 is required until the pressure in the vacuum chamber 30 reaches a predetermined maximum pressure Ph so as to measure the fourth time t4. The step of obtaining the slope (D) is included.
[37] And, in the step B, as shown in Figure 5, using the second slope (B) obtained from the optimum pressure (Pd) to the minimum pressure (Pl), the optimum so as to have the same slope as the second slope The second time t2 is reset based on the pressure Ph so that the pressure in the vacuum chamber 30 is reset by the second time according to the reset second 'time t2' (one point). The first step of maintaining the chain line; Using the third slope C obtained from the minimum pressure Pl to the optimum pressure Pd, the third time t3 is determined based on the optimum pressure Pd to have the same slope as the third slope. And a second step of maintaining the pressure in the vacuum chamber 30 according to the reset third 'time t3' to the pressure reset by the third time (see dashed line).
[38] In addition, using the fourth slope D obtained from the optimum pressure Pd to the maximum pressure Ph, the fourth time (based on the optimum pressure Pd to have the same slope as the fourth slope (D). resetting t4) to maintain the pressure in the vacuum chamber 30 according to the reset fourth 'time t4' to the pressure reset by the fourth time (see dashed line); By using the first inclination A obtained from the highest pressure Ph to the optimum pressure Pd, the first time t1 is determined based on the optimum pressure Pd to have the same inclination as the first inclination. And a fourth step of maintaining the pressure in the vacuum chamber 30 according to the reset first 'time t1' to the pressure (see dashed line) reset by the first 'time.
[39] In addition, it is preferable that each of the steps constituting the B step proceeds sequentially sequentially.
[40] In addition, the control method of the vacuum refrigerator according to the present invention according to the second aspect, the time to proceed to the first step, the second step, the third step, and the fourth step to the timer 61. Step C, which is newly measured and compared with the time t1.t2.t3, t4 reset in each step; If the reset time compared in step C and the newly measured time do not coincide with each other, step D for notifying that a problem occurs in the device is preferably further included.
[41] In this case, in step C, the time is measured while the first step is in progress, and the second 'time (t2') is compared with the second time. Comparing the time t3 ', measuring the time during the third step, comparing the time with the fourth time t4', and measuring the time during the fourth step. Comparing with the first 'time t1' is included, the steps are sequentially performed in succession.
[42] In addition, the problem of the apparatus mentioned in step D is a problem in which an abnormal leakage occurs and the pressure in the vacuum chamber is increased while external air flows into the vacuum chamber 30, or the failure of the vacuum pump 40 causes the The air in the vacuum chamber 30 may not be exhausted so that the pressure in the vacuum chamber does not drop.
[43] In addition, the problem of the device mentioned in step D may be a problem that the food is decayed and the pressure in the vacuum chamber 30 rises, the vacuum pump 40 is driven while the door 31 is not closed well This may be a problem that the pressure in the vacuum chamber does not rise.
[44] As a result, the present invention according to the first and second forms made as described above is opened by closing the door after opening the door 31 provided in the opening of the vacuum chamber 30, the vacuum pump 40 is driven To exhaust the air in the vacuum chamber to the outside. At this time, the degree of vacuum in the vacuum chamber is kept constant, and the vacuum pump 40 is operated for the first 'time t1' mentioned in the above-mentioned second form, and the vacuum pump for the second 'time t2'. To stop the operation of the vacuum pump for the third time t3 ', and to stop the operation of the vacuum pump for the fourth time t4' to maintain a constant degree of vacuum in the vacuum chamber 30. . Therefore, according to the present invention, the vacuum degree of the vacuum chamber is kept constant, so that food can be stored for a long time.
[45] So far, the present invention has been described with reference to preferred embodiments, and a person of ordinary skill in the art may implement the above-described detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. There will be. Herein the essential technical scope of the present invention is shown in the claims.
[46] As described above, the present invention maintains a vacuum state by evacuating the air in the vacuum chamber for storing the food, thereby preventing the oxidation of the food stored by the oxygen in the air, which can be stored for a long time. have.
[47] And abnormality of an apparatus can be checked. That is, abnormal leakage of the vacuum chamber can be checked, corruption of food can be detected, abnormality of the vacuum pump can be checked, and door opening can be detected. Therefore, the reliability of the device can be improved.

权利要求:
Claims (11)
[1" claim-type="Currently amended] In the refrigerator compartment and the freezer compartment are provided on the cold air flow path for refrigeration or freezing of food,
A vacuum chamber provided on the cold air flow path and formed with a space to accommodate the food;
A vacuum pump for exhausting air in the vacuum chamber to the outside;
And a control device for controlling the vacuum pump to maintain a constant degree of vacuum in the vacuum chamber.
[2" claim-type="Currently amended] The method of claim 1,
The control device;
A pressure detector for generating a signal according to a predetermined maximum pressure, an optimum pressure, and a minimum pressure such that the degree of vacuum in the vacuum chamber is maintained;
And a microcomputer for turning on / off the vacuum pump according to the output signal of the pressure detector.
[3" claim-type="Currently amended] The method of claim 2,
The pressure detector;
A high pressure recognition pressure switch for generating a signal when the pressure in the vacuum chamber reaches a predetermined maximum pressure;
An optimum pressure recognition pressure switch for generating a signal when the pressure in the vacuum chamber reaches a predetermined optimum pressure;
And a pressure switch for generating a signal when the pressure in the vacuum chamber reaches a predetermined minimum pressure.
[4" claim-type="Currently amended] The method of claim 2,
The micom;
A timer for checking each time taken for the pressure in the vacuum chamber to reach the respective pressures;
Storing each time checked by the timer, and using each of the pressures and the respective slopes obtained by the respective times, the respective pressures and the angles based on the optimum pressure to have the same slope as the respective slopes. A memory unit for resetting the time;
And a controller for turning on / off the vacuum pump according to the pressure and the time reset to the memory unit.
[5" claim-type="Currently amended] A step of detecting the time taken for the pressure in the vacuum chamber to reach the predetermined maximum pressure, the optimum pressure and the minimum pressure at the time of driving and stopping the vacuum pump, respectively, and obtaining the inclination between the respective times and the respective pressures;
The pressure in the vacuum chamber is reset by controlling the vacuum pump according to the reset time by resetting each pressure and each time on the basis of the optimum pressure so as to have the same slope as each slope obtained in the step A. The vacuum refrigerator control method of claim 1, characterized by comprising a step B to maintain the
[6" claim-type="Currently amended] The method of claim 5,
The step A;
In the driving of the vacuum pump, when the pressure in the vacuum chamber reaches a predetermined maximum pressure, the start step of starting the timer to start detecting the time;
Obtaining a first slope with respect to time and pressure by measuring a first time required for the pressure in the vacuum chamber to reach a predetermined optimum pressure from the start step;
Obtaining a second slope with respect to time and pressure by measuring a second time required after the first time is measured until the pressure in the vacuum chamber reaches a predetermined minimum pressure;
When the pressure in the vacuum chamber reaches a predetermined minimum pressure, the driving of the vacuum pump is stopped and at the same time, a third time required for the pressure in the vacuum chamber to reach a predetermined optimum pressure after the second time is measured. To obtain a third slope with respect to time and pressure,
And measuring a fourth time required for the pressure in the vacuum chamber to reach a predetermined maximum pressure after the third time is measured, thereby obtaining a fourth slope with respect to time and pressure. Control method of vacuum refrigerator.
[7" claim-type="Currently amended] The method according to claim 5 or 6,
The step B;
By using the second slope obtained from the optimum pressure to the minimum pressure, the second time is reset based on the optimum pressure to have the same slope as the second slope, and according to the reset second 'time in the vacuum chamber. A first step of maintaining the pressure at a pressure reset by a second 'time,
Using the third slope obtained from the lowest pressure to the optimum pressure, the third time is reset on the basis of the optimum pressure to have the same slope as the third slope, and according to the reset third 'time, A second step of maintaining the pressure at a pressure reset by the third 'time;
Using the fourth slope obtained from the optimum pressure to the maximum pressure, the fourth time is reset based on the optimum pressure to have the same slope as the fourth slope, and according to the reset 4 'time, A third step of maintaining the pressure at a pressure reset by the fourth time;
By using the first slope obtained from the highest pressure to the optimum pressure, the first time is reset based on the optimum pressure to have the same slope as the first slope, and according to the reset first 'time, And a fourth step of maintaining the pressure at a pressure reset by the first 'time, the control method of the vacuum refrigerator characterized in that the sequential successively proceeds.
[8" claim-type="Currently amended] The method of claim 7, wherein
A step C for measuring the time progressed in the first step, the second step, the third step, and the fourth step and comparing it with the time reset in each step;
The control method of the vacuum refrigerator, characterized in that further comprises a step D for notifying that the problem occurs in the device when the reset time and the measured time compared in step C does not coincide with each other.
[9" claim-type="Currently amended] The method of claim 8,
The step C;
Measuring the time during the first step and comparing it with the second 'time;
Measuring the time during the second step and comparing it with the third 'time;
Measuring the time during the third step and comparing the time with the fourth 'time;
And measuring time while the fourth step is performed and comparing the time with the first 'time.
[10" claim-type="Currently amended] The method of claim 8,
The problem of the device in step D;
The abnormal leakage occurs and the external air flows into the vacuum chamber and the pressure in the vacuum chamber is a problem that the problem of the pressure rises.
[11" claim-type="Currently amended] The method of claim 8,
The problem of the device in step D;
The control method of the vacuum refrigerator, characterized in that the air in the vacuum chamber is not exhausted due to the failure of the vacuum pump so that the pressure in the vacuum chamber does not drop.

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同族专利:

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公开号 | 公开日

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KR100379487B1|2003-04-10|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-12-13|Application filed by 구자홍, 엘지전자주식회사

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2000-12-13|Priority to KR20000076007A

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2002-06-22|Publication of KR20020047536A

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2003-04-10|Application granted

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2003-04-10|Publication of KR100379487B1

优先权:

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申请号 | 申请日 | 专利标题

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KR20000076007A|KR100379487B1|2000-12-13|2000-12-13|Controlling device and method of Vacuum refrigerator|