CN218442960U

CN218442960U - Heat exchange device for efficient defrosting

Info

Publication number: CN218442960U
Application number: CN202222581213.0U
Authority: CN
Inventors: 陈骏骥
Original assignee: Guangdong Shunde Aokeling Heat Pump Equipment Co ltd
Current assignee: Guangdong Shunde Aokeling Heat Pump Equipment Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-02-03
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a heat transfer device that high-efficient defrosting was used, including evaporation heat exchanger, the discharge, reposition of redundant personnel capillary group, evaporation heat exchanger includes the defrosting water conservancy diversion nest of tubes by bottom up range, the evaporation water conservancy diversion nest of tubes, reposition of redundant personnel capillary group is including defrosting reposition of redundant personnel capillary group of tubes, evaporation reposition of redundant personnel capillary group of tubes, the end of giving vent to anger of discharge respectively with defrosting water conservancy diversion nest of tubes, the income gas end intercommunication of evaporation water conservancy diversion nest of tubes, the income liquid port of defrosting reposition of redundant personnel capillary group of tubes, the income liquid port of evaporation reposition of redundant personnel capillary group of tubes communicates with defrosting water conservancy diversion nest of tubes and evaporation water conservancy diversion nest of tubes respectively, the play liquid port of defrosting reposition of redundant personnel capillary group of tubes, the play liquid port of evaporation reposition of redundant personnel capillary group of tubes communicates respectively has the collector tube, and the tube length of defrosting reposition of redundant personnel capillary group of tubes and evaporation reposition of tubes capillary group of tubes is unequal. Simple structure, the defrosting is fast, improves heat utilization rate, effectively prevents the incomplete condition of defrosting that pipeline upper portion condensate water and outside cold environment caused.

Description

Heat exchange device for efficient defrosting

Technical Field

The utility model relates to a technical field of heat pump, a heat transfer device that high-efficient defrosting was used specifically says so.

Background

The heat pump system is a device which can obtain low-level heat energy from air, water or soil in the nature, and provide high-level heat energy which can be used by people through electric energy to do work.

The evaporator converts liquid substances into gaseous substances, which are also one of important components of the heat pump system, and the low-temperature condensed liquid exchanges heat with the outside air through the evaporator, is gasified to absorb heat, and achieves a refrigeration effect.

Traditional evaporimeter, it includes evaporating heat exchanger and the discharge rather than being connected, reposition of redundant personnel capillary, and at the operation in-process, the pipe arm temperature that can appear discharge, reposition of redundant personnel capillary then condenses into the frost when being less than 0 ℃, though evaporating heat exchanger surface allows a small amount of frostings, but when the frost layer is thicker, the outside forms the ice-cube, causes evaporating heat exchanger's cold volume to be difficult to distribute out, influences evaporating heat exchanger's refrigeration effect.

Therefore, the existing evaporation heat exchanger changes the flowing direction of a refrigerant of the evaporation heat exchanger during defrosting and removes frost on the tube wall through a gas collecting tube, the evaporation heat exchanger and a flow dividing capillary tube.

However, the conventional evaporative heat exchanger has the following disadvantages in the use process:

1) Because the phenomenon of frosting is mostly from bottom to top, the gas collecting pipe, the reposition of redundant personnel capillary tube length of defrosting usefulness are the same, and the volume that the condensate liquid passes through gas collecting pipe, evaporimeter, reposition of redundant personnel capillary equals, lead to defrosting speed slow, and heat utilization rate is low, makes the incomplete condition of defrosting that pipeline upper portion condensate water and outside cold environment caused easily.

2) When the evaporation heat exchanger operates normally, the tube lengths of the shunt capillaries for evaporation heat exchange are equal, but the air flows are different, so that the manufacturing cost is high, the evaporation effect is reduced and the frosting probability is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a heat exchange device for high-efficiency defrosting.

The invention aims to realize the following steps: a heat exchange device for efficient defrosting comprises an evaporation heat exchanger, a gas collecting pipe and a shunt capillary pipe group, wherein the evaporation heat exchanger comprises a defrosting guide pipe group and an evaporation guide pipe group which are arranged from bottom to top, the shunt capillary pipe group comprises a defrosting shunt capillary pipe group and an evaporation shunt capillary pipe group, the gas outlet end of the gas collecting pipe is respectively communicated with the gas inlet ends of the defrosting guide pipe group and the evaporation guide pipe group, the liquid inlet end of the defrosting shunt capillary pipe group and the liquid inlet end of the evaporation shunt capillary pipe group are respectively communicated with the defrosting guide pipe group and the evaporation guide pipe group, the liquid outlet end of the defrosting shunt capillary pipe group and the liquid outlet end of the evaporation shunt capillary pipe group are respectively communicated with a liquid collecting pipe, and the pipe length of the defrosting shunt capillary pipe group is different from that of the evaporation shunt capillary pipe group.

According to the optimization, the liquid collecting pipe is provided with a one-way valve for controlling the passage or passage of the defrosting shunting capillary tube group, and the one-way valve is respectively communicated with the liquid collecting pipe and the defrosting shunting capillary tube group.

According to the optimization, the tube length of the defrosting shunting capillary tube group is shorter than that of the evaporation shunting capillary tube group.

The defrosting and shunting capillary tube group comprises a plurality of defrosting and shunting capillaries with different lengths, and the defrosting and shunting capillaries with different lengths are arranged in sequence according to the air passing amount.

According to the optimization, the defrosting shunt capillary is long through the arrangement pipe with large air volume, and the defrosting shunt capillary is long through the arrangement pipe with small air volume.

According to the optimization, the evaporation shunt capillary guide pipe group comprises a plurality of evaporation shunt capillaries with different lengths, and the evaporation shunt capillaries with different lengths are sequentially arranged according to the passing air quantity.

According to the optimization, the evaporation shunt capillary is long in length of the arrangement pipe with large air volume, and the evaporation shunt capillary is long in length of the arrangement pipe with small air volume.

The utility model has the advantages of:

1) The utility model provides a long relative evaporation of pipe of defrosting water conservancy diversion nest of tubes divides the pipe length of capillary, realizes when participating in the defrosting, and the pipe length of defrosting water conservancy diversion nest of tubes is minimum, and is the most through the heat, and it is fast to defrost, effectively prevents the incomplete condition of defrosting that pipeline upper portion condensate water and outside cold environment caused.

2) Every tube length of defrosting reposition of redundant personnel capillary pipe, evaporation reposition of redundant personnel capillary of this application varies, and arranges according to the amount of wind how much, improves heat utilization and rates, reduces the phenomenon of frosting.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the preferred embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 2, the heat exchanger for efficient defrosting of the present invention includes an evaporation heat exchanger 1, a gas collecting pipe 2, and a shunt capillary tube set. The evaporation heat exchanger 1 comprises a defrosting diversion pipe group 3 and an evaporation diversion pipe group 4 which are arranged from bottom to top, and the diversion capillary pipe group comprises a defrosting diversion capillary pipe group 5 and an evaporation diversion capillary pipe group 6. The air outlet end of the air collecting pipe 2 is respectively communicated with the air inlet ends of the defrosting diversion pipe group 3 and the evaporation diversion pipe group 4, and the liquid inlet port of the defrosting diversion capillary pipe group 5 and the liquid inlet port of the evaporation diversion capillary pipe group 6 are respectively communicated with the defrosting diversion pipe group 3 and the evaporation diversion pipe group 4. The liquid outlet port of the defrosting shunting capillary tube group 5 and the liquid outlet port of the evaporation shunting capillary tube group 6 are respectively communicated with a liquid collecting tube 7, and the tube length of the defrosting shunting capillary tube group 5 is different from that of the evaporation shunting capillary tube group 6.

As shown in fig. 1 to 2, for further refinement, the liquid collecting tube 7 is provided with a check valve 8 for controlling the passage or the passage of the defrosting shunting capillary tube group 5, and the check valve 8 is respectively communicated with the liquid collecting tube 7 and the defrosting shunting capillary tube group 5.

Also, the tube length of the defrosting shunt capillary tube group 5 is shorter than that of the evaporation shunt capillary tube group 6.

That is, when heating is performed normally, the check valve 8 is closed, and the defrosting diversion capillary tube group 5 is closed. At this time, the refrigerant flows from the evaporation and diversion capillary tube group 6 to the evaporation and diversion tube group 4 and the gas collecting tube 2, and the refrigerant is concentrated to flow, thereby improving the evaporation quality.

When defrosting is carried out, the one-way valve 8 is opened, the defrosting diversion pipe group 3 participates in defrosting, and the refrigerant flows from the gas collecting pipe 2 to the evaporating diversion pipe group 4, the defrosting diversion pipe group 3, the evaporating diversion capillary pipe group 6 and the defrosting diversion capillary pipe group 5. Because the length of the defrosting shunt capillary tube group 5 is shortest, the passing heat is the largest, the defrosting speed is high, and the incomplete defrosting condition caused by the upper condensed water of the evaporating heat exchanger 1 and the external cold environment is effectively prevented.

Referring to fig. 1 to 2, the defrosting bypass capillary tube group 5 includes a plurality of defrosting bypass capillaries 51 with different lengths, and the defrosting bypass capillaries 51 with different lengths are arranged in sequence according to the amount of air passing through. The evaporation shunt capillary guide pipe group 6 comprises a plurality of evaporation shunt capillaries 61 with different lengths, and the evaporation shunt capillaries 61 with different lengths are arranged in sequence according to the passing air volume.

In an optimized scheme, the defrosting bypass capillary 51 is short in length when passing through the arrayed pipe with large air volume, and the defrosting bypass capillary 51 is long in length when passing through the arrayed pipe with small air volume. The evaporation shunt capillary 61 is short through the arrangement pipe with large air volume, and the evaporation shunt capillary 61 is long through the arrangement pipe with small air volume.

That is, the evaporative heat exchanger 1 of the present application has short bypass capillaries passing through a place with a large air volume and long bypass capillaries passing through a place with a small air volume. The flow dividing capillary guide pipes with different pipe lengths are adopted and arranged according to the air quantity, so that the heat utilization rate is improved, and the frosting phenomenon is reduced.

Above-mentioned embodiment only does the utility model discloses the better embodiment of effect, all with the utility model discloses a heat transfer device that high-efficient defrosting was used is the same or the structure of equivalence, all is the utility model discloses an in the protection scope.

Claims

1. The utility model provides a heat transfer device of high-efficient defrosting usefulness, includes evaporating heat exchanger (1), discharge (2), reposition of redundant personnel capillary group, its characterized in that: the evaporation heat exchanger (1) comprises a defrosting diversion pipe group (3) and an evaporation diversion pipe group (4) which are arranged from bottom to top, the diversion pipe group comprises a defrosting diversion capillary pipe group (5) and an evaporation diversion capillary pipe group (6), the air outlet end of the air collecting pipe (2) is respectively communicated with the air inlet ends of the defrosting diversion pipe group (3) and the evaporation diversion pipe group (4), the liquid inlet end of the defrosting diversion capillary pipe group (5) and the liquid inlet end of the evaporation diversion capillary pipe group (6) are respectively communicated with the defrosting diversion pipe group (3) and the evaporation diversion pipe group (4), the liquid outlet end of the defrosting diversion capillary pipe group (5) and the liquid outlet end of the evaporation diversion capillary pipe group (6) are respectively communicated with a liquid collecting pipe (7), and the length of the defrosting diversion capillary pipe group (5) is different from that of the evaporation diversion capillary pipe group (6).

2. The heat exchange device for efficient defrosting according to claim 1, wherein: the defrosting shunt capillary tube group (5) is communicated with the liquid collecting tube (7) through a one-way valve (8), and the one-way valve (8) is communicated with the defrosting shunt capillary tube group (5).

3. The heat exchange device for efficient defrosting according to claim 1, wherein: the defrosting shunting capillary tube group (5) is shorter than the evaporation shunting capillary tube group (6).

4. The heat exchange device for efficient defrosting according to any one of claims 1 to 3, characterized in that: the defrosting shunt capillary tube group (5) comprises a plurality of defrosting shunt capillary tubes (51) with different lengths, and the defrosting shunt capillary tubes (51) with different lengths are arranged in sequence according to the passing air volume.

5. The heat exchange device for efficient defrosting according to claim 4, characterized in that: the defrosting bypass capillary (51) is short in length when the air volume is large, and the defrosting bypass capillary (51) is long in length when the air volume is small.

6. The heat exchange device for efficient defrosting according to claim 1, wherein: the evaporation and diversion capillary guide pipe group (6) comprises a plurality of evaporation and diversion capillaries (61) with different lengths, and the evaporation and diversion capillaries (61) with different lengths are sequentially arranged according to the air passing amount.

7. The heat exchange device for efficient defrosting according to claim 1, characterized in that: the evaporation and distribution capillary (61) is short in arrangement length through large air volume, and the evaporation and distribution capillary (61) is long in arrangement length through small air volume.