CN208520231U - Flat heat exchanger and refrigerating plant - Google Patents

Abstract

The utility model discloses a kind of flat heat exchanger and refrigerating plants, including plate-like body and multiple fins, plate-like body has inner space, and including top surface, bottom surface and a pair of of side, side is connected to top surface and bottom surface, around forming inner space, in the internally positioned space of fin, the top of each fin is connected to top surface, the bottom end of each fin is connected to bottom surface, fin is to be divided into multiple channels for inner space, channel carries out the refrigerant of heat exchange to be passed through, bottom surface has the protrusion protruded outwardly, lower groove is formed to correspond to inner space, lower groove is adjacent and one of is connected to channel, and the bottom of lower groove is lower than the bottom in channel, use the refrigeration oil reflux of accommodating refrigerant.Fin can lift structure intensity, lower groove accommodate refrigeration oil reflux, avoid influence refrigerant efficiency.

Description

Flat heat exchanger and refrigerating plant

[technical field]

The utility model relates to a kind of heat exchangers, more particularly, to a kind of flat heat exchanger and apply heat exchange The refrigerating plant of device.

[background technique]

Known refrigerating plant expands refrigerant to absorb heat using compressor compresses refrigerant, Evaporator ambient air temperature is allowed to decline.Then the cold air of cooling is imported in freezer, it will be in freezer using cold air Frozen goods cooling, complete refrigeration movement.However, since the demand in the market for rapid freezing is promoted, using only Import the mode that cold air freezes, fast-refrigerating ability needed for rapid freezing can not be provided.

It is currently known the technology freezed in freezer using heat exchanger, refrigerant is passed through in freezer Heat exchanger in, reach faster refrigerating efficiency.However refrigerant undergoing phase transition and and can generate pressure in a heat exchanger Power variation, getting off to be easy to allow heat exchanger for a long time, deformation occurs, and cold medium flux is caused to change.In the case of serious, very Blocking to will lead to the pipeline for being passed through refrigerant, refrigerating plant being allowed to be unable to reach expected refrigerating capacity.Still further aspect, when Refrigeration oil is mingled in when flowing in the tube in refrigerant with refrigerant, often because temperature change influences its viscosity, and then is attached to pipeline The heat absorption efficiency of refrigerant is influenced on inner wall, equally refrigerating plant can be allowed to be unable to reach expected refrigerating capacity.

[utility model content]

In order to solve foregoing problems, the utility model provides a kind of flat heat exchanger and refrigerating plant, using more A fin maintains the mechanical strength of heat exchanger, avoids the problems such as deforming, also with the setting of lower groove, provides specific gravity The channel of heavier liquid (such as refrigeration oil) reflux, avoids the problem that the freezing efficiency of refrigerant is affected.

The flat heat exchanger of the utility model, including plate-like body and multiple fins, plate-like body have interior Portion space, and it is connected to top surface and bottom surface including top surface, bottom surface and a pair of of side, side, thus internal empty around being formed Between, in the internally positioned space of fin, the top of each fin is connected to top surface, and the bottom end of each fin is connected to bottom surface, fin to Inner space is divided into multiple channels, channel carries out the refrigerant of heat exchange to be passed through, and bottom surface has one protruded outwardly Protrusion corresponds to inner space and forms a lower groove, and lower groove is adjacent and one of is connected to channel, and the bottom of lower groove Portion is lower than the bottom in channel, uses the refrigeration oil reflux of accommodating refrigerant.

The refrigerating plant of the utility model includes freezing chamber and tabular to freeze collection frozen goods, refrigerating plant Heat exchanger, heat exchanger is set in freezing chamber, to for freezing storing article, heat exchanger include plate-like body and Multiple fins, plate-like body have inner space, and including top surface, bottom surface and a pair of of side, side be connected to top surface and Bottom surface forms inner space to surround, and in the internally positioned space of fin, the top of each fin is connected to top surface, each fin Bottom end is connected to bottom surface, and fin is to be divided into multiple channels for inner space, to be passed through the refrigerant for carrying out heat exchange, Indsole face has the protrusion protruded outwardly, forms lower groove to correspond to inner space, lower groove is adjacent and is connected to channel One of, and the bottom of lower groove is lower than the bottom in channel, to accommodate the refrigeration oil reflux of refrigerant.

The flat heat exchanger and refrigerating plant of the utility model have following beneficial effect:

Using fin can deformation occurs to avoid plate-like body, to maintain the volume in channel and the flow of refrigerant.Under Groove can be used to accommodate the biggish refrigeration oil of specific gravity, form the channel of refrigeration oil liquid reflux, avoid the efficiency of refrigerant by shadow It rings.

[Detailed description of the invention]

Fig. 1 is the schematic diagram according to the flat heat exchanger of an embodiment of the present invention.

Fig. 2 is the top cross-sectional view of the heat exchanger of Fig. 1.

Fig. 3 is the schematic diagram according to the flat heat exchanger of another embodiment of the utility model.

Fig. 4 is the schematic diagram according to the refrigerating plant of another embodiment of the utility model.

Drawing reference numeral explanation

100,200 plate-like body 110,210 of heat exchanger

Refrigerant exit 11a refrigerant inlet 110b

111,211 side 113,213 of top surface

115,215 protrusion 117 of bottom surface

118 rear end face 119 of front end face

120,220 channel 123,223 of inner space

127 fin 130,230 of lower groove

Gap 130a spaced walls 150

Communicating pipe 190 refrigerating plant 300

310 circulating fan 320 of freezing chamber

Frozen goods P first part R1

Second part R2 flows to F1, F2

[specific embodiment]

In relation to the utility model is aforementioned and other technology contents, feature and effect, in following cooperation with reference to the preferable of schema In the detailed description of embodiment, can clearly it present.

The flat heat exchanger and refrigerating plant of the utility model are set in the inner space of heat exchanger plate ontology There are multiple fins, and the design with lower groove.By the fin being connected with top surface and bottom surface, heat exchanger can be promoted Structural strength avoids the problem that deforming because pressure difference causes heat exchanger to expand or compress to collapse etc..In addition, lower groove The heavier refrigeration oil reflux of specific gravity can be used to accommodate, avoid the problem that refrigerant efficiency is affected.

Fig. 1 is please referred to, for according to the schematic diagram of the flat heat exchanger of an embodiment of the present invention.Heat exchanger 100 include a plate-like body 110 and multiple fins 130.Plate-like body 110 has inner space 120, and including top surface 111, bottom surface 115 and a pair of of side 113, this is connected to top surface 111 and bottom surface 115 to side 113.Top surface 111, bottom surface 115 And this surrounds side 113 and forms inner space 120.In the internally positioned space 120 of fin 130, the top of each fin 130 is connected It is connected to bottom surface 115 in the bottom end of top surface 111, each fin 130, inner space 120 is divided into multiple channels 123, channel 123 carry out the refrigerant of heat exchange to be passed through.

Bottom surface 115 has the protrusion 117 protruded outwardly, forms lower groove 127 to correspond to inner space 120.It is recessed Slot 127 is adjacent and one of is connected to channel 123, and the bottom of lower groove 127 is lower than the bottom in channel 123, allow specific gravity compared with The refrigeration oil that refrigerant is attached most importance to is able to depositing and is placed in lower groove 127, and separates with refrigerant of the flowing in channel 123.So The channel of refrigeration oil liquid reflux can be provided, avoid the problem that the heat absorption efficiency of refrigerant is affected.

It is the top cross-sectional view of the heat exchanger of Fig. 1 referring to Fig. 1 and Fig. 2, Fig. 2.The plate-like body of the present embodiment 110 further include opposite front end face 118 and rear end face 119.Top surface 111, bottom surface 115, the side 113, front end of plate-like body 110 Face 118 and rear end face 119, being connected to surround forms inner space 120.In the internally positioned space 120 of fin 130, and and front end face There is gap 130a between 118 and rear end face 119, refrigerant can be allowed to flow.In the present embodiment, the top of each fin 130 is continuous Ground is connect with top surface 111, and the bottom end of each fin 130 is continuously to connect with bottom surface 115, therefore refrigerant is only capable of through gap 130a Flow to different channels 123.

In the present embodiment, plate-like body 110 and the fin 130 being disposed therein are that metal is integrally formed.In an embodiment In, it is made of using aluminum metal with plate punching press.However the utility model is made simultaneously not using aluminum metal as the limitation in material Make method not also to be limited with Sheet Metal Forming Technology；Other may be used as heat exchanger material and other can be used to make hot friendship The technology of parallel operation can be applied to the heat exchanger 100 of the utility model embodiment.

As shown in Figures 1 and 2, the heat exchanger 100 of the present embodiment further includes spaced walls 150, internally positioned space 120 In.Spaced walls 150 are connected to top surface 111, bottom surface 115, front end face 118 and rear end face 119, to separate plate-like body 110 For adjacent but not interconnected first part R1 and second part R2.There is rear end face 119 refrigerant exit 110a and refrigerant to enter Mouthful 110b, refrigerant exit 110a are located at first part R1, and to leave first part R1 for refrigerant, refrigerant inlet 110b is positioned at the Two part R2, to enter second part R2 for refrigerant.Heat exchanger 100 further includes communicating pipe 190, the both ends of communicating pipe 190 It is connected to refrigerant exit 110a and refrigerant inlet 110b.The refrigerant after heat exchange is carried out in first part R1, via even Siphunculus 190 continuously moves to second part R2 and carries out heat exchange.

According to aforementioned, refrigerant first carries out heat exchange in first part R1, is then moved to second part via communicating pipe 190 R2, that is, flow direction of the refrigerant in first part R1 and second part R2 is opposite.In the present embodiment, refrigerant is by first part R1 Left side enter plate-like body 110 (such as via in Fig. 2 display be located at first part R1 on the left of opening enter first part R1), moved between different channels 123 by gap 130a, and flow to refrigerant exit 110a according to F1 is flowed to.Communicating pipe 190 For U-tube, the refrigerant for leaving first part R1 is made to be again introduced into plate-like body 110 by the refrigerant inlet 110b of second part R2. Refrigerant enters according to flowing to after F2 flows through second part R2 after second part R2, by leaving plate sheet on the left of second part R2 Body 110 (such as leaving second part R2 via the opening that display is located on the left of second part R2 in Fig. 2).Refrigerant is in first part F1 is flowed in R1, flows to F2 in second part R2 in contrast to refrigerant.

In the present embodiment, heat exchanger 100 be can be applied in refrigerating plant, be held as the freezing for putting frozen goods Plate.After refrigerant is passed through plate-like body 110, flowed via in multiple channels 123, it can be cold on heat exchanger 100 with putting Freeze article and carry out heat exchange, absorbs heat by refrigerant evaporation, the temperature for reducing frozen goods achievees the effect that freezing.In addition, plate Ontology 110, fin 130 and spaced walls 150 can be metal integrated molding, and material and processing procedure are in the present invention not Add to limit.

Referring to figure 3., for according to the schematic diagram of the flat heat exchanger of another embodiment of the utility model.Heat exchange Device 200 includes plate-like body 210 and multiple fins 230.Plate-like body 210 has inner space 220, and including top surface 211, bottom surface 215 and a pair of of side 213, around forming inner space 220.In the internally positioned space 220 of fin 230, top End is connected to top surface 211, and bottom end is connected to bottom surface 215, inner space 220 is divided into multiple channels 223, channel 223 is used To be passed through the refrigerant for carrying out heat exchange.

It does not exist together with heat exchanger 100 described in previous embodiment, it is more to be that the heat exchanger 200 of the present embodiment further includes A fin 270.Fin 270 is connected to plate-like body 210, and is distributed on bottom surface 215, uses increase heat exchange area.More For at large, fin 270 is connected on the bottom surface 215 of plate-like body 210 in a manner of being separated by a spacing two-by-two.It applies In refrigerating plant, fin 270 can increase the contact area of air in heat exchanger 200 and refrigerating plant, can promote refrigeration Effect.The top surface 211 of plate-like body 210 and not connected fin 270, form even curface, allow frozen goods direct It is carried on top surface 211, facilitates the freezen protective of frozen goods.

Referring to figure 4., for according to the schematic diagram of the refrigerating plant of another embodiment of the utility model.Refrigerating plant 300 is used Frozen goods P is collected in freezing, and including freezing chamber 310 and flat heat exchanger.Before in the present embodiment being utilization It states and is illustrated for the heat exchanger 200 including fin 270 of embodiment, detailed content is not added to be described in detail herein.Heat is handed over Parallel operation 200 is set in freezing chamber 310, is used to place for frozen goods P.It can be according to demand by multiple heat in freezing chamber 310 Exchanger 200 is set side by side, and can use the configuration mode of multilayer, increases the quantity for putting frozen goods P.

Refrigerating plant 300 can further include circulating fan 320, freeze in freezing chamber 310 to provide circulation high wind.It takes Increase the heat exchange area with air using fin 270 with flat heat exchanger 200, and direct using frozen goods P The refrigeration modes of heat exchanger 200 are contacted, refrigerating plant 300 can provide quickly and effectively refrigerating effect.

The flat heat exchanger and refrigerating plant of the utility model previous embodiment, including plate-like body and multiple ribs Piece.Plate-like body has inner space, in the internally positioned space of fin, inner space is divided into multiple channels.Channel To be passed through the refrigerant for carrying out heat exchange.The bottom surface of plate-like body has the protrusion protruded outwardly, internal empty to correspond to Between form lower groove.Lower groove is adjacent and one of is connected to channel, and the bottom of lower groove is lower than the bottom in channel, thus Accommodate the refrigeration oil reflux of refrigerant.It is connected to top surface and bottom surface by fin, when can be to avoid refrigerant is passed through in channel, because inside and outside Pressure difference causes heat exchanger the malformations such as to expand or be recessed, and maintains the volume in channel and the flow of refrigerant.Separately Lower groove by bottom lower than channel designs, and accommodates the biggish refrigeration oil of specific gravity in refrigerant, provides refrigeration oil liquid reflux Channel avoids the problem that refrigerant efficiency is affected.

The above is only the preferred embodiment of the utility model, is not done in any form to the utility model Limitation is not intended to limit the utility model, any ability although the utility model discloses preferred embodiment as above The technical staff in domain should can use in the technology of the disclosure above in the range of not departing from technical solutions of the utility model Hold the equivalent embodiment made a little change or be modified to equivalent variations, but all without departing from technical solutions of the utility model Hold, substantive core technology any simple modification, equivalent change and modification to the above embodiments of foundation the utility model, It is still within the scope of the technical solutions of the present invention.

Claims (10)

1. a kind of flat heat exchanger characterized by comprising

Plate-like body, has an inner space, and including top surface, bottom surface and a pair of of side, it is described side is connected to it is described Top surface and the bottom surface, thus around the inner space is formed；And

Multiple fins are located in the inner space, and the top of each fin is connected to the top surface, the bottom of each fin End is connected to the bottom surface, the fin the inner space is divided into multiple channels, the channel to be passed through into The refrigerant of row heat exchange；

Wherein, the bottom surface has the protrusion protruded outwardly, forms lower groove to correspond to the inner space, described recessed Slot is adjacent and one of is connected to the channel, and the bottom of the lower groove is lower than the bottom in the channel, to accommodate The refrigeration oil of the refrigerant flows back.

2. heat exchanger as described in claim 1, it is characterised in that: the plate-like body further include opposite front end face and after End face has gap between the fin and the front end face and the rear end face, flow for the refrigerant.

3. heat exchanger as claimed in claim 2, it is characterised in that: further comprise spaced walls, be located at the inner space In, the spaced walls are connected to the top surface, the bottom surface, the front end face and the rear end face, to by the plate sheet Body is divided into first part that is adjacent but being not communicated with and second part.

4. heat exchanger as claimed in claim 3, it is characterised in that: the flow direction of the refrigerant in the first part is opposite In the flow direction in the second part.

5. heat exchanger as claimed in claim 4, it is characterised in that: the rear end face has refrigerant exit and refrigerant inlet, The refrigerant exit is located at the first part, leaves the first part with for the refrigerant, the refrigerant inlet is located at The second part enters the second part with for the refrigerant.

6. heat exchanger as claimed in claim 5, it is characterised in that: further comprise communicating pipe, both ends are connected to institute State refrigerant exit and the refrigerant inlet.

7. heat exchanger as claimed in claim 3, it is characterised in that: the plate-like body, the fin and the spaced walls For metal integrated molding.

8. heat exchanger as described in claim 1, it is characterised in that: further comprise multiple fins, be connected to the plate Ontology, and be distributed on the bottom surface, use increase heat exchange area.

9. heat exchanger as described in claim 1, it is characterised in that: the plate-like body and the fin be metal one at Type.

10. a kind of refrigerating plant, to freeze collection frozen goods characterized by comprising

Freezing chamber；And

Flat heat exchanger is set in the freezing chamber, with for frozen goods storing, the heat exchanger packet It includes:

Plate-like body, has an inner space, and including top surface, bottom surface and a pair of of side, it is described side is connected to it is described Top surface and the bottom surface, thus around the inner space is formed；And

Multiple fins are located in the inner space, and the top of each fin is connected to the top surface, the bottom of each fin End is connected to the bottom surface, the fin the inner space is divided into multiple channels, the channel to be passed through into The refrigerant of row heat exchange；

Wherein, the bottom surface has the protrusion protruded outwardly, forms lower groove to correspond to the inner space, described recessed Slot is adjacent and one of is connected to the channel, and the bottom of the lower groove is lower than the bottom in the channel, to accommodate The refrigeration oil of the refrigerant flows back.