JP5139228B2 - Heat exchanger - Google Patents

Description

  The present invention relates to a heat exchanger configured by holding a plurality of heat exchanging portions with fixing means.

Conventionally, as a refrigeration apparatus in a refrigerator, a freezer, etc., a gaseous refrigerant is compressed by a compressor, cooled by a condenser as a heat exchanger to be a liquid refrigerant having a high pressure, and the pressure is reduced by an expansion valve to evaporate Vapor compression type, which is vaporized by a vessel and deprived of heat by heat of vaporization, is used. The condenser is heated from a tube made of a copper tube or the like having a refrigerant flowing and excellent in thermal conductivity, and a heat radiating portion such as a needle or plate that is provided on the outer periphery of the tube and promotes heat exchange of the tube. An exchange unit is configured. In addition, the condenser is compactly formed by meandering the heat exchanging portion so that the straight portions overlap in the vertical relationship. The condenser is a frame composed of a side plate having a U-shaped cross section that accommodates the curved portion of the heat exchange unit, and an upper plate and a lower plate that are fixed to the upper and lower ends of the side plate with screws or the like. It is hold | maintained and it fixes to an installation target object via a frame (for example, refer patent document 1).
Japanese Utility Model Publication No. 55-95083

  The frame which is the fixing means of the condenser disclosed in Patent Document 1 only holds the uppermost stage and the lowermost stage in the heat exchanging section with the upper plate and the lower plate, and the intermediate stage in the heat exchanging section. It is not fixed vertically. For this reason, the condenser may generate noise when the upper and lower straight portions of the heat exchange section come into contact with each other or the upper and lower straight portions of the heat exchange section come into contact with each other. In addition, since the frame body covers the curved portion of the heat exchanging portion with the side plate, there is a disadvantage that heat exchange of the curved portion of the heat exchanging portion is hindered by the side plate.

  That is, the present invention has been proposed in order to suitably solve these problems inherent in the heat exchanger according to the prior art, and the heat exchanging portion is fixed by the fixing means without hindering the heat exchange. The object is to provide a suitably held heat exchanger.

In order to overcome the above-mentioned problems and achieve an intended object, a heat exchanger according to claim 1 of the present application is
A heat exchanging portion formed of a tube connected to the refrigerant circulation circuit and through which the refrigerant flows and fins provided on the outer periphery of the tube so as to extend radially outward, meandering so that the straight portions overlap vertically In a heat exchanger that has a plurality and is configured by holding a plurality of heat exchanging portions with fixing means,
The plurality of heat exchanging portions are arranged in parallel in the air circulation direction and connected in parallel to the refrigerant circulation circuit,
The fixing means includes
A pair of support members that are disposed opposite to each other with two adjacent heat exchange portions sandwiched therebetween, and extend over the upper and lower sides of the heat exchange portions;
A holding member that is provided on each of the support members and holds the adjacent two heat exchange parts sandwiched between the pair of support members so as to contact each other;
Each holding member is provided with a plurality of sets corresponding to the linear portions of each stage of the heat exchange section, and includes a pair of holding pieces that sandwich the fins of each stage from above and below.
According to the first aspect of the present invention, the fixing means can restrict the vertical movement of the heat exchange unit and the parallel movement of the heat exchange unit without hindering heat exchange in the heat exchange unit.

The gist of the invention according to claim 2 is that the support member is provided with a positioning piece to be inserted between adjacent fins in the tube extending direction.
According to the invention of claim 2, the heat exchanging portion is prevented from being displaced in the extending direction of the linear portion by the positioning piece.

In the invention according to claim 3, the holding member is detachably attached by engaging a hook-like engagement piece provided on the support member side with an engagement hole formed in the support member. The gist.
According to the invention of claim 3, the holding member can be easily assembled to the support member.

The gist of the invention according to claim 4 is that the pair of holding pieces are provided at positions shifted in the vertical direction with respect to the pair of holding pieces provided on the other holding member of the pair.
According to the invention which concerns on Claim 4, since an adjacent heat exchange part can be hold | maintained shifting up and down, heat exchange can be performed efficiently in any heat exchange part.

  According to the heat exchanger according to the present invention, the heat exchanging part can be appropriately held by the fixing means without disturbing the heat exchanging in the heat exchanging part.

  Next, a preferred embodiment of the heat exchanger according to the present invention will be described below with reference to the accompanying drawings. In the embodiment, a condenser as a heat exchanger in a vapor compression refrigeration apparatus provided in a refrigerator will be described as an example. Moreover, the condenser of an Example is an example comprised by hold | maintaining two heat exchange parts with one fixing means.

  As shown in FIG. 1, the condenser 20 according to the embodiment is an air-cooling type, and is installed in a machine room 12 defined in the refrigerator 10 via a fixing means. Specifically, the condenser 20 is disposed on the front side of the machine room 12 in the vicinity of the front panel 14 covering the front surface of the machine room 12, and is fronted by a condenser fan FM disposed on the rear side of the condenser 20. The panel 14 is configured to come into contact with air taken in from a vent (not shown). The compressor CM is disposed on the rear side of the condenser fan FM in the machine room 12. Further, the condenser 20 is disposed in the refrigerant circulation circuit configured by connecting the refrigeration apparatus with the refrigerant pipe, on the downstream side of the compressor CM, and on the upstream side of the expansion valve (not shown) as the decompression means, and is compressed. The vaporized refrigerant and air that have flowed in from the machine CM exchange heat to be liquefied.

  The condenser 20 includes two systems of heat exchange portions 22A and 22B each including a tube 26 through which a refrigerant flows and fins 28 provided on the outer periphery of the tube 26 so as to extend radially outward. Exchange parts 22A and 22B are arranged in parallel (refer to Drawing 1 or Drawing 2). The heat exchange portions 22A and 22B of the embodiment employ so-called spiral fin tubes in which fins 28 are spirally wound around the outer periphery of the tube 26, and the heat exchange portions 22A and 22B extend horizontally or substantially horizontally. The straight portions 24 are meandered so as to overlap with each other in the vertical direction (see FIG. 3). The condenser 20 is arranged so that the linear portion 24 of each heat exchange section 22A, 22B intersects the air flow caused by the condenser fan FM. In the condenser 20 of the embodiment, The straight portions 24 of the heat exchange portions 22A and 22B extend in the left-right direction with respect to the flow of air flowing in the front-rear direction (see FIG. 1). Further, in the condenser 20, two heat exchange units 22A and 22B are arranged side by side in the air flow direction of the machine room 12 in the front-rear relationship, and these heat exchange units 22A and 22B are parallel to the refrigerant circulation circuit. So connected.

  The fixing means 30 is configured to hold two adjacent heat exchange portions 22A and 22B as a set, and is arranged to hold a substantially central portion in the left-right direction of each heat exchange portion 22A and 22B (see FIG. 3). The fixing means 30 is provided on each of the support members 32A and 32B and the pair of support members 32A and 32B that are opposed to each other with the two adjacent heat exchange portions 22A and 22B interposed therebetween, and the corresponding heat exchange portions 22A and 22B. Are combined with holding members 42A and 42B for holding (see FIG. 2). The fixing means 30 is configured to hold the two adjacent heat exchange portions 22A and 22B in contact with each other by holding members 42A and 42B provided on the opposing support members 32A and 32B, respectively. Here, the condenser 20 inserts the fins 28 of the other heat exchange units 22B and 22A between the fins 28 of the one heat exchange unit 22A and 22B, and connects the fins 28 of both heat exchange units 22A and 22B to each other. You may engage and contact.

  In addition, when distinguishing one set of heat exchange part 22A, 22B hold | maintained by the fixing means 30, what is arrange | positioned at the front side of the machine room 12 is made into the 1st heat exchange part 22A, This 1st heat exchange part 22A What is arranged on the rear side is referred to as a second heat exchange part 22B. In the fixing means 30, members such as the support member 32A and the holding member 42A arranged on the first heat exchange part 22A side are given the first, and the support member arranged on the second heat exchange part 22B side. The members such as 32B and the holding member 42B are distinguished by attaching a second.

  The first and second support members 32A and 32B are long plate-like bodies whose long sides extend in the vertical direction (see FIG. 3), and are longer than the vertical dimensions of the opposing heat exchange portions 22A and 22B. It is set to a scale and is arranged so as to extend over the heat exchanging portions 22A and 22B (see FIG. 1 or FIG. 2). Each support member 32A, 32B is set to have a narrower width than the straight portion 24 of the corresponding heat exchange part 22A, 22B. The first and second support members 32A and 32B are spaced apart from each other in the front and rear direction of the machine room 12, and each support member 32A and 32B is located at the center of the linear portion 24 of the corresponding heat exchange portion 22A and 22B. Each is provided to be located. Each support member 32A, 32B is provided at one side edge of the surface facing the corresponding heat exchange part 22A, 22B, and is opened apart from the positioning piece 34 protruding toward the heat exchange part 22A, 22B. A plurality of (three in the embodiment) engagement holes 36 are also provided. The positioning pieces 34 are provided vertically on the surfaces of the support members 32A and 32B facing the corresponding heat exchange portions 22A and 22B, and the fins 28 and 28 adjacent to each other at a predetermined interval in the extending direction of the tube 26 in the linear portion 24. It is inserted between them (see FIG. 4). Further, in the first support member 32A and the second support member 32B, the positioning piece 34 is formed on the opposite side edge, and in the embodiment, the positioning piece 34 is provided on the right side edge of the first support member 32A, and the second A positioning piece 34 is provided on the left edge of the support member 32B.

  The fixing means 30 includes a first support member (one support member) 32 </ b> A and a second support member (the other support member) 32 </ b> B assembled to the panel defining the machine room 12. It is installed in the machine room 12 by fixing the upper and lower ends with a detachable fixing tool such as a bolt (see FIG. 1). Here, the second support member 32B has attachment portions 38 and 38 bent in a crank shape at the upper and lower ends, respectively, and the upper and lower attachment portions 38 and 38 are the upper and lower end portions of the first support member 32A. And is fixed to the first support member 32A by being fixed with a detachable fixing tool such as a bolt.

  The holding members 42A and 42B are plate-like bodies whose long sides extend in the vertical direction. A plurality of holding members 42A and 42B are provided on the side facing the corresponding heat exchanging portions 22A and 22B, and a pair of holding pieces 44 and 44 for holding the linear portion 24 and a side facing the corresponding support members 32A and 32B. There are provided a plurality of (three in the embodiment) engaging pieces 46 bent in a bowl shape toward the lower side (see FIG. 2). Each holding member 42A, 42B is set to be the same as or narrower than the width of the support members 32A, 32B (example) (see FIG. 3). The first holding member 42A and the second holding member 42B have the same configuration. Each holding member 42A, 42B has a pair of holding pieces 44, 44 arranged so as to be spaced apart vertically with the same width as the diameter of the fin 28 or narrower than the diameter, and the holding piece set is used as a heat exchange part 22A, Corresponding to each step of the straight portion 24B of 22B, it is provided with multiple stages (6 sets in the embodiment because the straight portion 24 has 6 steps). The holding piece set restricts the vertical movement of the linear portion 24 with the fins 28 constituting the linear portions 24 of the heat exchange portions 22A and 22B from above and below, and holds the linear portions 24 adjacent in the vertical direction apart from each other. It is configured as follows. The holding members 42A and 42B are formed in a circular arc shape in accordance with the outer shape of the fins 28 and the portion between the holding piece set and the holding piece set (see FIG. 2).

  The holding members 42A and 42B are detachably attached to the support members 32A and 32B by hooking engagement pieces 46 inserted into the corresponding engagement holes 36 onto the lower opening edges of the engagement holes 36. The fixing means 30 shifts the attachment position of the second holding member 42B to the second support member 32B upward with respect to the attachment position of the first holding member 42A to the first support member 32A, and opposes the holding members 42A, The holding piece set of 42B is set to have a positional relationship shifted vertically (see FIG. 2). That is, the first heat exchanging part 22A held by the first holding member 42A and the second heat exchanging part 22B held by the second holding member 42B come into contact with each other in a vertically shifted relationship, and the first heat exchanging part 22A. A part of the straight part of the second heat exchanging part 22B faces the straight part 24 (see FIG. 3).

(Effects of Example)
Next, the operation of the condenser 20 according to the embodiment will be described. For example, in order to secure the same heat exchange area as that of the condenser 20 of the embodiment in one heat exchange part, it is necessary to lengthen the extension dimension of the heat exchange part. In addition, since the tube becomes long, the pressure loss increases, which adversely affects the circulation of the refrigerant. On the other hand, the condenser 20 of the embodiment increases the horizontal dimension or vertical dimension of each heat exchange part 22A, 22B by dividing the heat exchange parts 22A, 22B into two systems and arranging them in parallel. Therefore, the heat exchange area can be ensured and the whole can be made compact. Moreover, in the condenser 20 of the embodiment, since the two heat exchange units 22A and 22B are connected in parallel to the refrigerant circulation circuit, the length of the tube 26 of each heat exchange unit 22A and 22B is shortened. The pressure loss can be reduced, and the refrigerant can be smoothly circulated in the condenser 20 and the refrigerant circulation circuit.

  Since the condenser 20 is configured to hold a part of the linear portion 24 of the heat exchanging portions 22A and 22B by the fixing means 30, the fixing means is compared with the case of holding the curved portion of the heat exchanging portion as in the conventional example. The area | region which covers heat-exchange part 22A, 22B by 30 can be made small. That is, in the condenser 20, the air flow passing through the heat exchanging portions 22A and 22B is not hindered by the fixing means 30, and the curved portion 25 is also effectively used to improve the heat exchanging efficiency in each of the heat exchanging portions 22A and 22B. be able to. Moreover, since the fixing means 30 holds the first heat exchanging part 22A and the second heat exchanging part 22B shifted in the vertical direction, the second heat exchanging part facing from between the straight portions 24 of the first heat exchanging part 22A. Air can be appropriately brought into contact with the straight portion 24 of 22B, and heat can be efficiently exchanged.

  The condenser 20 sandwiches the linear portions 24 of each stage of the heat exchanging portions 22A and 22B from above and below with a pair of holding pieces 44 and 44 so that the adjacent linear portions 24 are separated from each other. Movement in the vertical direction is restricted. Thereby, even if the condenser 20 is shaken when the refrigerator 10 is transported or when the compressor CM is driven, the linear portions 24 do not come into contact with each other, and generation of abnormal noise, deformation of the fins 28 and the like are prevented. Can do. Further, since the condenser 20 holds the front and rear heat exchange portions 22A and 22B in contact with each other by the front and rear holding members 42A and 42B of the fixing means 30, the forward and backward movement of the first heat exchange portion 22A is the first holding. The member 42A and the second heat exchanging part 22B are blocked, and the second heat exchanging part 22B is blocked by the second holding member 42B and the first heat exchanging part 22A. That is, since the first heat exchanging part 22A and the second heat exchanging part 22B are in close contact with each other in the front-rear direction, the condenser 20 shakes when the refrigerator 10 is transported or when the compressor CM is driven. However, the mutual positional relationship does not change, and it is possible to prevent the generation of abnormal noise and the deformation of the fins 28. Furthermore, the condenser 20 restricts the movement of the heat exchanging portions 22A and 22B in the left-right direction by inserting the positioning pieces 34 of the support members 32A and 32B between the fins 28 and 28 of the corresponding heat exchanging portions 22A and 22B. can do. Thus, according to the fixing means 30 of the embodiment, the movement can be restricted in any of the front, rear, left, right, top and bottom directions of the heat exchange units 22A and 22B without hindering heat exchange in the heat exchange units 22A and 22B. it can.

  The fixing means 30 is composed of a pair of support members 32A and 32B and holding members 42A and 42B, and has a small number of parts, and the engaging pieces 46 of the holding members 42A and 42B are engaged with the engaging holes of the supporting members 32A and 32B. The holding members 42A and 42B can be easily assembled to the support members 32A and 32B simply by being hooked on 36.

(Example of change)
It is not limited to the configuration of the embodiment, but can be modified as follows.
(1) In the embodiment, the case where it is adopted as a refrigerator refrigeration apparatus has been described as an example.
(2) The heat exchanging part constituting the condenser is not limited to two systems, and a plurality of groups each held by a fixing means may be arranged in parallel.
(3) It is not limited to the structure which hold | maintains two adjacent heat exchange parts with one fixing means, You may provide several fixing means spaced apart in the extension direction of the linear part of a heat exchange part. Thereby, even if the width | variety of the linear part of a heat exchange part becomes long, a heat exchange part can be hold | maintained appropriately.
(4) In the embodiment, by changing the mounting position of the holding member with respect to the support member, the adjacent heat exchanging portions are shifted in the vertical direction. You may shift the position of a heat exchange part.

It is a sectional side view which shows the principal part of the refrigerator provided with the condenser which concerns on the suitable Example of this invention. It is a sectional side view which shows the condenser of an Example. It is a front view which shows the condenser of an Example. It is a schematic horizontal stage figure which shows the principal part of the condenser of an Example.

Explanation of symbols

22A 1st heat exchange part (heat exchange part), 22B 2nd heat exchange part (heat exchange part),
24 straight portions, 26 tubes, 28 fins, 30 fixing means,
32A first support member (support member), 32B second support member (support member),
34 positioning pieces, 36 engagement holes, 42A first holding member (holding member),
42B 2nd holding member (holding member), 44 holding piece, 46 engaging piece

Claims (4)

The tube (26) connected to the refrigerant circulation circuit and through which the refrigerant flows, and the fin (28) provided on the outer periphery of the tube (26) so as to extend radially outward, the linear portion (24) is In a heat exchanger configured to have a plurality of heat exchanging portions (22A, 22B) meandering so as to overlap vertically, and holding a plurality of heat exchanging portions (22A, 22B) by fixing means (30),
The plurality of heat exchange parts (22A, 22B) are arranged in parallel in the air circulation direction and connected in parallel to the refrigerant circulation circuit,
The fixing means (30)
A pair of support members (32A, 32B) disposed oppositely across two adjacent heat exchange portions (22A, 22B) and extending over the heat exchange portions (22A, 22B);
A holding member (42A) provided on each of the support members (32A, 32B) and sandwiching two adjacent heat exchange portions (22A, 22B) sandwiched between the pair of support members (32A, 32B) so as to contact each other , 42B)
Each holding member (42A, 42B) is provided with a plurality of sets corresponding to the linear portion (24) of each stage of the heat exchange section (22A, 22B), and holds the fin (28) of each stage from above and below. A heat exchanger comprising a pair of holding pieces (44, 44).   The heat exchanger according to claim 1, wherein the support member (32A, 32B) is provided with a positioning piece (34) inserted between fins (28, 28) adjacent to each other in the extending direction of the tube (26). .   The holding member (42A, 42B) includes a hook-like engagement piece (46) provided on the support member (32A, 32B) side, and an engagement hole (36) formed in the support member (32A, 32B). The heat exchanger according to claim 1, wherein the heat exchanger is detachably attached by engaging with the heat exchanger.   The pair of holding pieces (44, 44) are provided at positions shifted in the vertical direction with respect to the pair of holding pieces (44, 44) provided on the other holding member (42A, 42B) as a pair. Item 4. The heat exchanger according to any one of Items 1 to 3.

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