Air heat exchanger of cold and hot dual system

Abstract

The air heat exchanger comprises a shell, an opening used for air circulation is formed in one side of the shell, and a draught fan is arranged on the side, opposite to the opening, of the shell. The heat exchange fins are used for heat exchange; the heat exchanger further comprises a refrigerant flow path structure and a heat medium flow path structure, the refrigerant flow path structure and the heat medium flow path structure are connected to the shell through supporting plates, and the heat exchange fins are evenly distributed on the refrigerant flow path structure and the heat medium flow path structure. A refrigerant flows into the refrigerant flow path structure or a heat medium flows into the heat medium flow path structure, heat is transferred to the heat exchange fins, forced convection heat exchange is conducted through the draught fan, and cooling or heating is achieved. The refrigerating and heating device can achieve the purposes of refrigerating and heating, does not occupy extra space in a warehouse, is excellent in refrigerating and heating effect, greatly reduces cost, and is convenient to construct and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air heat exchanger with a cold and hot dual system. Background Art

[0002] The air conditioning equipment currently used in various small constant temperature warehouses for industrial and commercial use can solve the problem of cooling in summer, but heating in winter requires additional heating equipment, which is costly, troublesome to construct and maintain, and occupies part of the warehouse space. The most commonly used electric heating has the following problems:

[0003] 1) Constant temperature requires long working hours, consumes a lot of power, and is not energy-saving;

[0004] 2) The warehouse temperature fluctuates greatly, making it difficult to maintain a constant temperature, which affects the quality of stored items;

[0005] 3) Electric heating tubes are prone to cause safety hazards such as fire. Utility Model Content

[0006] The purpose of the utility model is to provide a technical solution of a cold and hot dual-system air heat exchanger to address the deficiencies in the prior art, which can not only achieve the purposes of cooling and heating, but also does not occupy additional space in the warehouse, has excellent cooling and heating effects, greatly reduces costs, and is convenient for construction and maintenance.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A cold and hot dual-system air heat exchanger, comprising

[0009] A housing, one side of which is provided with an opening for air circulation, and a fan is provided on the housing on the side opposite to the opening;

[0010] and a plurality of heat exchange fins for heat exchange;

[0011] Features:

[0012] It also includes a refrigerant flow path structure and a hot medium flow path structure, both of which are connected to the shell through a support plate, and heat exchange fins are evenly distributed on the refrigerant flow path structure and the hot medium flow path structure. The refrigerant flows into the refrigerant flow path structure or the hot medium flows into the hot medium flow path structure and transfers heat to the heat exchange fins, and forced convection heat exchange is performed through the fan to achieve cooling or heating. Through the design of the above structure, not only can the purpose of cooling and heating be achieved, but also no additional space in the warehouse is occupied, the cooling and heating effects are excellent, and at the same time the cost is greatly reduced, and the construction and maintenance are convenient.

[0013] Furthermore, the refrigerant flow path structure includes a refrigerant inlet pipe, a refrigerant outlet pipe and a refrigerant flow path pipe. The refrigerant inlet pipe is connected to the refrigerant outlet pipe through the refrigerant flow path pipe to realize the transportation of the refrigerant and improve the heat exchange efficiency.

[0014] Furthermore, the refrigerant flow pipe includes a plurality of branch coils, the outlet ends of the branch coils are evenly distributed on the refrigerant outlet pipe, the inlet ends of the branch coils are connected to the separator heads through capillaries, the separator heads are connected to the refrigerant inlet pipe, the refrigerant is input into the separator heads through the refrigerant inlet pipe, and then separated through the separator heads, and respectively input into the corresponding branch coils through each capillary, thereby greatly improving the efficiency of heat exchange, and the refrigerant after heat exchange is uniformly output from the refrigerant outlet pipe.

[0015] Furthermore, the refrigerant inlet pipe is connected to the fixed plate through the mounting block, and the fixed plate is connected to the support plate, so as to realize the stable assembly of the refrigerant inlet pipe. Through the design of the mounting block and the fixed plate, the stability and reliability of the installation of the refrigerant inlet pipe and the dispensing head are greatly improved.

[0016] Furthermore, the heat medium flow path structure includes a heat medium inlet pipe, a heat medium outlet pipe and a plurality of heat medium flow path pipes, the inlet ends of the heat medium flow path pipes are evenly distributed on the heat medium inlet pipe, and the outlet ends of the heat medium flow path pipes are evenly distributed on the heat medium outlet pipe, so as to realize the diversion and transportation of the heat medium. The heat medium can be diverted to each heat medium flow path pipe through the heat medium inlet pipe, and output from the heat medium outlet pipe after heat exchange, thereby improving the heat exchange efficiency.

[0017] Furthermore, the heat medium flow pipes are distributed between two upper and lower adjacent branch coils, which can not only avoid mutual influence between the heat medium flow pipes and the branch coils, but also meet the requirements of cooling and heating.

[0018] Furthermore, the heat medium flow pipe, the branch coil and the heat exchange fins are fixedly connected by an expansion process.

[0019] Furthermore, the heat exchange fins are aluminum fins.

[0020] Furthermore, a drain pipe is provided at the bottom of the shell to discharge condensed water formed after heat exchange.

[0021] Furthermore, a mounting block is provided on the side of the shell to facilitate the overall installation of the air heat exchanger.

[0022] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0023] The utility model can not only achieve the purpose of cooling and heating, but also does not occupy extra space in the warehouse, has excellent cooling and heating effects, greatly reduces costs, and is convenient for construction and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of a cold and hot dual-system air heat exchanger of the utility model;

[0026] Figure 2 for Figure 1 Structural diagram of the middle A direction;

[0027] Figure 3 This is a schematic diagram of the structure after the right side plate is removed in the utility model;

[0028] Figure 4 This is a schematic diagram of the structure after the right side plate and the outer shell plate are removed in the utility model;

[0029] Figure 5 It is a structural schematic diagram of the refrigerant flow path structure in the utility model;

[0030] Figure 6 It is a structural schematic diagram of the heat medium flow path structure in the utility model.

[0031] In the figure: 1-shell plate; 2-bottom plate; 3-right side plate; 4-fan; 5-drain pipe; 6-left side plate; 7-refrigerant outlet pipe; 8-heat medium inlet pipe; 9-heat medium outlet pipe; 10-support plate; 11-refrigerant inlet pipe; 12-liquid distributor; 13-mounting block; 14-fixing plate; 15-branch coil; 16-heat exchange fins; 17-refrigerant flow pipe; 18-heat medium flow pipe. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0035] like Figures 1 to 6 As shown, a cold and hot dual system air heat exchanger of the utility model comprises a shell and a plurality of heat exchange fins 16. An opening for air circulation is provided on one side of the shell, and a fan 4 is provided on the shell on the opposite side of the opening.

[0036] The shell specifically includes an outer shell plate 1, a bottom plate 2, a left side plate 6 and a right side plate 3, and an inner hollow shell structure is formed by splicing the outer shell plate 1, the bottom plate 2, the left side plate 6 and the right side plate 3.

[0037] The heat exchange fins 16 are located in the shell and are preferably aluminum fins for heat exchange.

[0038] A drain pipe 5 is provided at the bottom of the base plate 2 for draining condensed water formed after heat exchange.

[0039] The outer shell plate 1 is provided with mounting blocks 13 on the sides of the fan 4 and the opening to facilitate the overall installation of the air heat exchanger.

[0040] The air heat exchanger further includes a refrigerant flow path structure and a heat medium flow path structure, and both the refrigerant flow path structure and the heat medium flow path structure are connected to the shell through a support plate 10 .

[0041] The refrigerant flow path structure includes a refrigerant inlet pipe 11, a refrigerant outlet pipe 7 and a refrigerant flow path pipe 17. The refrigerant inlet pipe 11 is connected to the refrigerant outlet pipe 7 through the refrigerant flow path pipe 17 to realize the transportation of the refrigerant and improve the heat exchange efficiency.

[0042] The refrigerant flow pipe 17 includes a plurality of branch coils 15, the outlet ends of the branch coils 15 are evenly distributed on the refrigerant outlet pipe 7, and the inlet ends of the branch coils 15 are connected to the separator head 12 through a capillary tube. The separator head 12 is connected to the refrigerant inlet pipe 11. The refrigerant is input into the separator head 12 through the refrigerant inlet pipe 11, and then separated through the separator head 12. Each capillary tube is respectively input into the corresponding branch coil 15, which greatly improves the efficiency of heat exchange. The refrigerant after heat exchange is uniformly output from the refrigerant outlet pipe 7.

[0043] The refrigerant inlet pipe 11 is connected to the fixed plate 14 through the mounting block 13, and the fixed plate 14 is connected to the support plate 10, so as to realize the stable assembly of the refrigerant inlet pipe 11. Through the design of the mounting block 13 and the fixed plate 14, the stability and reliability of the installation of the refrigerant inlet pipe 11 and the liquid dispensing head 12 are greatly improved.

[0044] The heat medium flow path structure includes a heat medium inlet pipe 8, a heat medium outlet pipe 9 and a plurality of heat medium flow path pipes 18. The inlet ends of the heat medium flow path pipes 18 are evenly distributed on the heat medium inlet pipe 8, and the outlet ends of the heat medium flow path pipes 18 are evenly distributed on the heat medium outlet pipe 9, so as to realize the diversion and transportation of the heat medium. The heat medium can be diverted to each heat medium flow path pipe 18 through the heat medium inlet pipe 8, and output from the heat medium outlet pipe 9 after heat exchange, thereby improving the heat exchange efficiency.

[0045] The heat medium flow pipe 18 is distributed between two upper and lower adjacent branch coils 15, which can not only avoid the mutual influence between the heat medium flow pipe 18 and the branch coils 15, but also meet the requirements of cooling and heating.

[0046] The heat exchange fins 16 are evenly distributed on the refrigerant flow path structure and the heat medium flow path structure. The refrigerant flows into the refrigerant flow path structure or the heat medium flows into the heat medium flow path structure and transfers heat to the heat exchange fins 16. The fan 4 performs forced convection heat exchange to achieve cooling or heating. The above structural design can not only achieve the purpose of cooling and heating, but also does not occupy additional space in the warehouse. The cooling and heating effects are excellent, while the cost is greatly reduced and the construction and maintenance are convenient. The refrigerant is preferably a refrigerant.

[0047] The heat medium flow pipe 18, the branch coil 15 and the heat exchange fin 16 are all fixedly connected by an expansion connection process.

[0048] The utility model specifically includes the following steps when used in practice:

[0049] During cooling in summer, the refrigerant enters the distribution head from the refrigerant inlet pipe and is evenly distributed to each branch coil in the refrigerant flow pipe. It evaporates from liquid to gas, absorbs a large amount of heat, and the surface temperature of the aluminum fins decreases. The fan then performs large-area forced convection heat exchange to circulate indoor air, thereby achieving the purpose of cooling.

[0050] When heating in winter, the refrigerant flow path structure no longer works, and the heat medium is sent to the heat medium flow path structure. The heat of the heat medium is transferred to the aluminum fins by heat conduction, and then a large area of ​​forced convection heat exchange is carried out through the fan to circulate the indoor air, thereby achieving the purpose of heating.

[0051] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A cold and hot dual system air heat exchanger, comprising A housing, one side of which is provided with an opening for air circulation, and a fan is provided on the housing on a side opposite to the opening; and a plurality of heat exchange fins for heat exchange; Features: It also includes a refrigerant flow path structure and a heat medium flow path structure, both of which are connected to the shell through a support plate, and the heat exchange fins are evenly distributed on the refrigerant flow path structure and the heat medium flow path structure. The refrigerant flows into the refrigerant flow path structure or the heat medium flows into the heat medium flow path structure and transfers heat to the heat exchange fins, and forced convection heat exchange is performed through the fan to achieve cooling or heating.

2. The cold and hot dual-system air heat exchanger according to claim 1, characterized in that: The refrigerant flow path structure includes a refrigerant inlet pipe, a refrigerant outlet pipe and a refrigerant flow path pipe. The refrigerant inlet pipe is connected to the refrigerant outlet pipe through the refrigerant flow path pipe to realize the transportation of the refrigerant.

3. The cold and hot dual system air heat exchanger according to claim 2, characterized in that: The refrigerant flow path pipe includes a plurality of branch coils, the outlet ends of the branch coils are evenly distributed on the refrigerant outlet pipe, the inlet ends of the branch coils are connected to a liquid distributor head through a capillary tube, and the liquid distributor head is connected to the refrigerant inlet pipe.

4. The cold and hot dual system air heat exchanger according to claim 2, characterized in that: The refrigerant inlet pipe is connected to the fixing plate through a mounting block, and the fixing plate is connected to the supporting plate, so as to realize stable assembly of the refrigerant inlet pipe.

5. The cold and hot dual system air heat exchanger according to claim 3, characterized in that: The heat medium flow path structure includes a heat medium inlet pipe, a heat medium outlet pipe and a plurality of heat medium flow path pipes, the inlet ends of the heat medium flow path pipes are evenly distributed on the heat medium inlet pipe, and the outlet ends of the heat medium flow path pipes are evenly distributed on the heat medium outlet pipe, so as to realize the split flow transportation of the heat medium.

6. The cold and hot dual system air heat exchanger according to claim 5, characterized in that: The heat medium flow path pipe is distributed between two upper and lower adjacent branch coils.

7. The cold and hot dual-system air heat exchanger according to claim 5, characterized in that: The heat medium flow pipe, the branch coil and the heat exchange fins are all fixedly connected by an expansion process.

8. The cold and hot dual-system air heat exchanger according to claim 1, characterized in that: The heat exchange fins are aluminum fins.

9. The cold and hot dual-system air heat exchanger according to claim 1, characterized in that: A drain pipe is provided at the bottom of the shell to drain condensed water formed after heat exchange.

10. The cold and hot dual-system air heat exchanger according to claim 1, characterized in that: A mounting block is provided on the side of the shell to facilitate the overall installation of the air heat exchanger.

Images