• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a rotor (1) of a rotary heat exchanger having a substantially cylindrical shape and comprising at least two sections (2), arranged around a shaft (3) and provided with at least one peripheral element (5), at least one radial element (4), located between adjacent sections (2), and clamping means (6), for securing the rotor (1) at least two sections (2). According to the invention, at least one clamping member (6), connected to the radial element (4) and to the peripheral elements (5) of said adjacent sections, applies tension to said radial element (4) and by sliding along an oblique surface (10a, 10b) pulls board peripheral elements (5) towards each other, when tightening. (Fig. 1)
    公开号:SE0950440A1
    申请号:SE0950440
    申请日:2009-06-10
    公开日:2010-12-11
    发明作者:Mikael Swanteson
    申请人:Heatex Ab；
    IPC主号:
    专利说明:

    2 edge joints. The joints provide both radial and tangential tensile forces in the rotor.
    The tension of the peripheral elements and the radial elements is set in several steps.
    A problem with variants that use radial elements and peripheral elements connected using individual joints, is that the assembly requires individual adjustment of the radial elements and the peripheral elements, respectively. An increased stress in a radial element often leads to a decrease in stress in the peripheral element. In order to obtain the correct tension in both the radial elements and the peripheral elements, stepwise adjustment is necessary. The voltage is therefore difficult to control. In the worst case, there may also be compression forces in either the radial elements or the peripheral elements, which can lead to mechanical instability of the rotor.
    The invention in short It is an object of the present invention to reduce the above problems and to provide a rotor, for use in rotary heat exchangers, whereby an increased voltage in the radial elements will lead to an increased voltage in the peripheral elements.
    According to a first aspect of the present invention, these objects are achieved by at least one clamping means, connected to the radial element and to the peripheral element of said adjacent sections, simultaneously applying tension to said radial elements and said peripheral elements during tightening. As a result, the assembly will be considerably facilitated, since only a clamping action will give a controlled and predictable tension in both the radial element and in the peripheral elements.
    The clamping member is attached to the radial element and connected to at least two peripheral elements. Two or more peripheral elements make the rotor more stable because they act as additional support for the periphery of the rotor.
    The fastening means may comprise a clamping block and a tightening means.
    This provides a very simple solution for clamping action using standard components. The radial element has a threaded portion located at its outer end relative to the center axis of the rotor. This is yet another simple solution for attaching the clamping block to the radial elements.
    The peripheral element covers, at least in part, the periphery of said section. This increases the stability of the rotor.
    The peripheral element is provided with a wedge-shaped projection arranged at least at one end of the peripheral element, said projection having an oblique surface, which is intended to fit into the clamping block. This is a quick and easy way of locking the peripheral element into the clamping block, as no other fastening means is necessary.
    The peripheral element may alternatively have one end of the peripheral element bent outwards from said periphery, in a radial direction, to form an oblique surface, which is intended to fit into said clamping block.
    This is also a quick and easy way of locking the peripheral element into the clamping block, as no other fastening means is necessary. This solution also requires less material and labor.
    Another aspect of the invention is a method of manufacturing a rotor for a rotary heat exchanger, wherein the rotor is divided into at least two sections, at least one radial element is arranged between each two adjacent sections, and a clamping means is provided, wherein upon tightening the clamping means voltage simultaneously to at least said radial elements and to a periphery with at least two adjacent sections.
    As a result, mounting will be considerably facilitated since only a clamping action will give a controlled and predictable tension in both the radial elements and the peripheral elements.
    Brief Description of the Drawings This and other aspects of the present invention will now be described in more detail, with reference to the accompanying drawings which show a presently preferred embodiment of the invention.
    Figure 1 shows in part a schematic side view of a rotor according to the present invention. Figure 2 shows an enlarged cross-sectional view of two embodiments of a clamping member of the rotor according to Figure 1.
    Figure 3 shows a schematic top view of the clamping means of the rotor according to figure 1.
    Detailed Description Figure 1 shows two sections 2 of a rotor 1 according to the present invention. A number of such sections 2 are mounted on a circular center axis 3 to form the rotor 1 in a substantially cylindrical shape. The rotor 1 has radial elements 4 arranged between two adjacent sections 2 and a number of peripheral elements 5 located against the periphery of the rotor 1. A clamping member 6 connected to the radial element 4 and to the peripheral elements is used to hold the sections 2 together.
    The rotor 1 itself is made of alternating layers of corrugated and flat aluminum sheets (not shown in detail) suitable for heat transfer. The rotor 1 is created by winding a corrugated and a flat aluminum plate around the shaft 3. This means that every second layer is a flat plate and every other layer is a corrugated plate. The two plates form a spiral (not shown in detail) which builds up the rotor 1.
    The sections 2 are then created by simply cutting the rotor 1 into cake piece shaped sections 2. Each section 2 is self-supporting and no further element is necessary to maintain the shape of the sections 2.
    The rotor 1 thus consists of at least two cake piece-shaped sections 2, mounted to the circular center axis 3, forming a substantially cylindrical rotor 1. The number of cake piece-shaped sections 2 depends on the size of the rotor 1. A smaller rotor 1 having a diameter up to 2.5 m can e.g. be divided into up to six cake-shaped sections 2. A larger rotor 1 having a diameter of 6.0 m may, for example, have twelve cake-shaped sections 2 and each such section 2 may also be divided into several elements (not shown) in the radial direction of the rotor 1. In the embodiment shown in Figure 1, the rotor 1 has eight cake-shaped sections 2. At least one radial element 4 is mounted between adjacent sections 2 and the radial element 4 has a length of at least the main part of the radial length of the sections 2. The radial element 4 is mounted to the center shaft 3 at one end. The radial element 4 extends in radial direction from the center axis 3 towards the outer periphery 7 of the rotor 1. Clamping means 6 are used to connect the radial element 4 to the peripheral elements 5.
    The peripheral elements 5 are shaped as an arc to abut against the outer periphery 7 of the rotor 1. The peripheral elements 5 preferably at least partially cover the periphery 7 of a section 2.
    As can be seen from Figure 2, the radial element 4 is provided with one or more threaded portions 9 and attached, in relation to the center axis 3 of the rotor 1, to an outer end 8 of the radial element 4 by welding or in another known manner. Furthermore, the peripheral elements 5 are provided with a curved end portion, in an embodiment of the invention, to form an outwardly inclined surface 10a or provided with wedge-shaped projections 11, in another embodiment of the invention, having an inclined surface 10b and fixed at the end of each peripheral element 5, i.e. where the peripheral elements 5 meet the radial elements 4. The clamping member 6 comprises a clamping block 12, having a conical inner surface 13 designed to fit the inclined surface 10a and 10b of the peripheral elements 5 or the projections 11. The clamping block 12 is intended to lock the peripheral the elements 5, when assembling the radial elements 4 to the rotor 1, and when tightening the clamping means 6, the inclined surface 10a or 10b slides against the conical surface 13, whereby the peripheral elements are pulled towards each other. A tightening device 14, preferably a screw or a bolt and nut, which passes through an opening 15 in the clamping block 12, is screwed into the threaded portion 9 of the radial element 4. When the tightening device 14 is tightened, the clamping block 12 is pressed down towards the center of the rotor 1 and slides along the inclined surface 10a or 10b, the radial elements 4 being tightened and at the same time contracting two adjacent peripheral elements 5. At least one clamping member 6, connected to the radial element 4 and to the peripheral elements 5 of said adjacent sections, will thus upon tightening simultaneously applying voltage to said radial elements 4 and said peripheral elements 5.
    As can be seen from Figure 3, each radial element 4 has a separate clamping block 12 located next to each side of the rotor 1, but it is also possible to use only one clamping block, which extends over the width of the rotor 1, and has a centrally located screw. The inclined surface 10a or 10b can also extend over the entire width of the rotor 1 or at individual positions preferably located next to each side of the rotor 1.
    Those skilled in the art will appreciate that the present invention is in no way limited to the preferred embodiment described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.
    For example, the tightening device does not have to be a screw or a threaded member. Different types of quick locks can be used to advantage. For example, it is also possible to let the outer part of the radial element project through the clamping block, and for example to use a nut to clamp the radial element and thus also the peripheral elements.
    Different types of fasteners can, of course, be used without departing from the inventive concept, as long as the radial elements and peripheral elements are tensioned simultaneously. Of course, it is also possible to use different means instead of the peripheral elements. For example, the periphery of each section may be made even stiffer to handle tension produced by the chuck. For example, it is also possible to use wires instead of straps.
    权利要求:
    Claims (8)
    [1]
    A rotor (1) of a rotary heat exchanger has a substantially cylindrical shape and comprises at least two sections (2), arranged around a shaft (3) and provided with at least one peripheral element (5), at least one radial element (4), located between adjacent sections (2), and clamping means (6), for fastening at least two sections (2) of the rotor (1), characterized by at least one clamping means (6), connected to the radial element (4 ) and to the peripheral elements (5) of said adjacent sections, upon tightening simultaneously applying tension to said radial elements (4) and said peripheral elements (5).
    [2]
    A rotor (1) according to claim 1, characterized in that the core means (6) are attached to the radial element (4).
    [3]
    A rotor (1) according to claim 1, characterized in that the clamping means (6) comprises a clamping block (12) and a tightening device (14).
    [4]
    A rotor (1) according to claim 1, characterized in that the radial element (4) has a threaded portion (9), located at its outer end (8), related to the center axis (3) of the rotor (1) .
    [5]
    A rotor (1) according to claim 1, characterized in that the peripheral element (5) covers, at least in part, the periphery (7) of said section (2).
    [6]
    A rotor (1) according to claim 1, characterized in that the peripheral element (5) is provided with a wedge-shaped projection (11) arranged at least at one end of the peripheral element (5), said projections (11) having an oblique surface (10b), which is intended to fit into said clamping block (12).
    [7]
    A rotor (1) according to claim 1, characterized in that at least one end portion of the peripheral element (5) is bent outwards from said periphery (7), in a radial direction, to form an oblique surface ( 10a), which is intended to fit into said clamping block (12).
    [8]
    A method of manufacturing a rotor (1) for a rotary heat exchanger, said rotor (1) being divided into at least two sections (2), at least one radial element (4) being arranged between each two adjacent sections (2) , and is provided with a clamping means (6), characterized in that when the clamping means is tightened (6), tension is applied simultaneously to at least said radial elements (4) and to a periphery of at least two adjacent sections (2).
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    同族专利:
    公开号 | 公开日
    SE533839C2|2011-02-01|
    WO2010144032A1|2010-12-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6422299B1|2001-11-06|2002-07-23|Thermotech Enterprises, Inc.|Wheel system for an air handling unit|WO2015189410A1|2014-06-13|2015-12-17|Amarant Industri Ab|Thermal wheel|
    US11041679B2|2019-01-21|2021-06-22|Johnson Controls Technology Company|Energy recovery wheel assembly for an HVAC system|
    法律状态:
    2015-02-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE0950440A|SE533839C2|2009-06-10|2009-06-10|Rotor for a rotary heat exchanger and a method for manufacturing such a rotor|SE0950440A| SE533839C2|2009-06-10|2009-06-10|Rotor for a rotary heat exchanger and a method for manufacturing such a rotor|
    PCT/SE2010/050603| WO2010144032A1|2009-06-10|2010-06-02|Rotor for a rotating heat exchanger and a method for manufacturing such rotor|
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