Condensing heat exchanger

Abstract

A condensing heat exchanger comprises a shell and a cooling pipe used for conducting heat exchange on refrigerants, the shell is provided with a refrigerant cavity, a refrigerant inlet and a refrigerant outlet, the shell is further provided with a partition component with double layers of side walls, the partition component is arranged in the refrigerant cavity to divide the refrigerant cavity into a first cavity and a second cavity, and the first cavity and the second cavity are communicated in an end-to-end mode. The first cavity and the second cavity extend in the length direction of the refrigerant cavity, the cooling pipe is arranged in the first cavity, the two ends of the cooling pipe extend out of the shell, the refrigerant inlet is formed in the upper portion of the side wall of the shell and communicated with the first cavity, and the refrigerant outlet is formed in the top face of the shell and communicated with the second cavity. The utility model provides a condensing heat exchanger which is small in structural size and high in heat exchange efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a condensation heat exchanger. Background Art

[0002] As one of the commonly used devices in the refrigeration field, a heat exchanger mainly releases the heat of a refrigerant to the external environment to realize the recycling of the refrigerant. The heat exchanger performs heat exchange on the refrigerant by using a cooling medium such as water, oil, etc. When the refrigerant to be processed passes through the internal channel of the heat exchanger, since the temperature of the cooling medium is lower than that of the refrigerant to be processed, there is a temperature difference between the two, so that the high temperature of the refrigerant to be processed is transferred to the cooling medium, thereby realizing the heat release of the refrigerant. The problem is that the conventional heat exchanger is relatively large in volume, and the heat exchanger cannot be placed in a narrow space environment or inside a device. In addition, for a heat exchanger with a small volume, due to the limitation of its internal space, the flow distance of the refrigerant through the heat exchanger is insufficient, resulting in a small flow rate of the refrigerant in the heat exchanger, and thus the heat exchange efficiency of the heat exchanger is poor, affecting the normal use of the device.

[0003] Therefore, further improvement is needed. Summary of the Utility Model

[0004] An object of the utility model is to at least overcome one of the deficiencies existing in the above-mentioned prior art, and to provide a condensation heat exchanger with a small structural volume and high heat exchange efficiency.

[0005] To achieve the above object, the technical solution provided by the embodiment of the utility model is:

[0006] A condensation heat exchanger includes a housing and a cooling pipe for heat-exchanging a refrigerant. The housing is provided with a refrigerant cavity, a refrigerant inlet and a refrigerant outlet. The housing is further provided with a partition member having a double-layer side wall. The partition member is disposed in the refrigerant cavity to divide the refrigerant cavity into a first cavity and a second cavity that are communicated end to end. The first cavity and the second cavity extend along the length direction of the refrigerant cavity. The cooling pipe is disposed in the first cavity and its two ends extend out of the housing. The refrigerant inlet is disposed on the upper part of the housing side wall and communicates with the first cavity. The refrigerant outlet is disposed on the top surface of the housing and communicates with the second cavity.

[0007] The partition member is cylindrical, and the central axis of the partition member coincides with the central axis of the housing to form a first cavity with an annular cross-section and a second cavity with a circular cross-section. The first cavity is located outside the second cavity. The top end of the partition member is hermetically connected to the inner top surface of the housing, and a communication gap for communicating the first cavity and the second cavity is left between the bottom end of the partition member and the inner bottom surface of the housing.

[0008] The separating component includes an outer cylinder and an inner cylinder. The outer cylinder is arranged outside the inner cylinder with a certain gap therebetween. The top ends of the outer cylinder and the inner cylinder are respectively and sealingly connected to the inner top surface of the housing, and the bottom end of the outer cylinder is sealingly connected to the bottom end of the inner cylinder.

[0009] The separating component is integrally formed with the housing, or the separating component is separately arranged from the housing.

[0010] The cooling pipe is spiral and coiled in the first cavity and extends along the height direction of the housing. The cooling pipe is provided with a water inlet and a water outlet. The water inlet is arranged at the lower end of the cooling pipe, and the water outlet is arranged at the upper end of the cooling pipe.

[0011] The condensation heat exchanger further includes a liquid storage component. The liquid storage component is arranged in the middle of the second cavity and extends along the length direction of the second cavity. The liquid inlet end of the liquid storage component is located at the lower part of the second cavity and has a certain distance from the bottom surface of the housing. The liquid outlet end of the liquid storage component extends out of the housing through the agent outlet.

[0012] The liquid storage component is provided with a first sealing component, and the first sealing component is located between the outer side wall of the liquid storage component and the side wall of the agent outlet.

[0013] The housing is further provided with a cavity opening and a cavity cover plate. The cavity opening is arranged at the bottom end of the housing and communicates with the refrigerant cavity. The cavity cover plate covers the cavity opening to seal the refrigerant cavity.

[0014] An installation structure is provided between the cavity cover plate and the housing. An installation step is arranged on the top surface of the cavity cover plate. The installation structure includes an external thread arranged on the outer wall surface of the installation step and an internal thread arranged on the inner wall surface of the housing. The external thread and the internal thread are screwed together to install the cavity cover plate on the housing.

[0015] The housing is further provided with a second sealing component. The second sealing component is arranged between the housing and the cavity cover plate and is located around the cavity opening.

[0016] The beneficial effects of the present utility model are as follows:

[0017] By adopting the condensation heat exchanger of the above technical solution, the separating component divides the refrigerant cavity into a first cavity and a second cavity that communicate end to end. The cooling pipe is arranged in the first cavity and exchanges heat with the refrigerant. When the refrigerant enters the refrigerant cavity, the refrigerant needs to pass through the first cavity and the second cavity in sequence, extending the flow distance of the refrigerant through the heat exchanger, increasing the flow rate of the refrigerant in the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger. Moreover, the structure of the condensation heat exchanger of the present technical solution is simple, and a good heat exchange effect can be achieved by adopting a smaller volume structure, and the applicable range of the heat exchanger is wider.

[0018] In addition, for the condensation heat exchanger of the above technical solution, its partition component adopts a double-layer sidewall structure, which can reduce the heat transfer from the first cavity to the second cavity, further reduce the heat of the refrigerant in the second cavity, and further improve the heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic structural diagram of a condensation heat exchanger according to an embodiment of the present invention.

[0020] Figure 2 FIG. 1 is a schematic structural diagram of a condensation heat exchanger according to an embodiment of the present invention.

[0021] Figure 3 FIG. 2 is a cross-sectional view of a condensation heat exchanger according to an embodiment of the present invention.

[0022] Figure 4 FIG. 3 is Figure 3 an enlarged view of part A of FIG. 2.

[0023] Figure 5 FIG. 4 is Figure 3 an enlarged view of part B of FIG. 2.

[0024] Figure 6 FIG. 5 is Figure 3 an enlarged view of part C of FIG. 2.

[0025] Figure 7 FIG. 6 is an exploded view of a condensation heat exchanger according to an embodiment of the present invention.

[0026] Figure 8 FIG. 7 is an exploded view of a condensation heat exchanger according to an embodiment of the present invention.

[0027] Figure 9 FIG. 8 is a schematic diagram of the flow of the refrigerant in a condensation heat exchanger according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0029] Refer to Figures 1-9, This condensation heat exchanger includes a housing 1 and cooling tubes 2. The housing 1 is provided with a refrigerant cavity, a refrigerant inlet 101, a refrigerant outlet 102, and a partition member 3. The refrigerant cavity is formed by the inner cavity of the housing 1 and is used for the flow of refrigerant. The partition member 3 has a double-layer sidewall structure. In this embodiment, the partition member 3 is cylindrical and is disposed in the refrigerant cavity, and the central axis of the partition member 3 coincides with the central axis of the housing 1, dividing the refrigerant cavity into a first cavity 103 with a circular cross-section that is connected end to end and a second cavity 104 with a circular cross-section. The first cavity 103 is located outside the second cavity 104, and the first cavity 103 and the second cavity 104 extend along the length direction of the refrigerant cavity. The top end of the partition member 3 is hermetically connected to the inner top surface of the housing 1 to prevent refrigerant from passing through the inner top surface of the housing 1. A communication gap 105 for communicating the first cavity 103 and the second cavity 104 is left between the bottom end of the partition member 3 and the inner bottom surface of the housing 1. The vertical projection of the communication gap 105 is annular for the refrigerant to flow from the first cavity 103 to the second cavity 104. The cooling tubes 2 are spiral and are wound in the first cavity 103 and extend along the length direction of the first cavity 103 for the flow of coolant. The lower end of the cooling tube 2 is provided with a water inlet 201, and the upper end of the cooling tube 2 is provided with a water outlet 202. Both the lower end and the upper end of the cooling tube 2 extend out of the sidewall of the housing 1. The refrigerant inlet 101 is provided on the upper part of the sidewall of the housing 1 and communicates with the first cavity 103 and is used for inputting the refrigerant to be processed into the refrigerant cavity. The refrigerant outlet 102 is provided on the top surface of the housing 1 and communicates with the second cavity 104 and is used for outputting the refrigerant from the refrigerant cavity. When the refrigerant enters the refrigerant cavity through the refrigerant inlet 101, the refrigerant needs to pass through the first cavity 103 and the second cavity 104 in sequence, causing the refrigerant to flow downward along the length direction of the first cavity 103 and upward along the length direction of the second cavity 104, extending the flow distance of the refrigerant through the heat exchanger, increasing the flow rate of the refrigerant in the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger. Moreover, the structure of the condensation heat exchanger of this technical solution is simple, and a good heat exchange effect can be achieved with a smaller volume structure. The heat exchanger can be installed in more scenarios and equipment for use, and the applicable range of the heat exchanger is wider.

[0030] In addition, for the condensation heat exchanger of the above technical solution, the partition member 3 adopts a double-layer sidewall structure, which can reduce the heat transfer from the first cavity 103 to the second cavity 104, further reducing the heat of the refrigerant in the second cavity 104 and further improving the heat exchange efficiency of the heat exchanger.

[0031] Furthermore, the partition component 3 includes an outer cylinder 301 and an inner cylinder 302. Specifically, in this embodiment, the outer cylinder 301 is wrapped around the outside of the inner cylinder 302 with a certain gap between the two. The top of the outer cylinder 301 and the top of the inner cylinder 302 are respectively sealed with the inner top surface of the shell 1, and the bottom of the outer cylinder 301 is sealed with the bottom of the inner cylinder 302 to prevent the refrigerant from entering the gap. Through the above technical solution, a vacuum layer is formed between the inner cylinder 302 and the outer cylinder 301. The vacuum layer can better isolate the heat transfer between the first cavity 103 and the second cavity 104, further improving the thermal insulation effect of the partition component 3, which can be understood by those skilled in the art.

[0032] Furthermore, the partition component 3 is integrally formed with the shell 1. Specifically, when the partition component 3 and the shell 1 are both made of plastic material, the partition component 3 and the shell 1 are formed as one body through injection molding. Alternatively, the partition component 3 and the shell 1 are separately arranged. Specifically, when the partition component 3 and the shell 1 are both made of metal material, the partition component 3 is fixed to the shell 1 by ultrasonic welding or the like, which can be understood by those skilled in the art.

[0033] Furthermore, the condensing heat exchanger also includes a liquid storage component 4. Specifically, in this embodiment, the liquid storage component 4 is cylindrical and is arranged in the middle of the second cavity 104 and extends along the length direction of the second cavity 104. The liquid inlet end of the liquid storage component 4 is located at the lower part of the second cavity 104 and leaves a certain distance between it and the bottom surface of the shell 1. The liquid outlet end of the liquid storage component 4 extends out of the shell 1 through the outlet 102. After the liquid storage component 4 allows the refrigerant to enter the second cavity 104, the refrigerant first flows from bottom to top along the second cavity 104 and reaches the top surface of the shell 1, and then flows from top to bottom along the second cavity 104 and reaches the bottom surface of the shell 1 to enter the liquid storage component 4, and continues to flow from bottom to top along the length direction of the liquid storage component 4 and is output from the liquid outlet end of the liquid storage component 4. Through the above technical scheme, the flow distance of the refrigerant in the heat exchanger is further extended, the flow rate of the refrigerant in the heat exchanger is further increased, and the heat exchange efficiency of the heat exchanger is higher, which can be understood by those skilled in the art.

[0034] Furthermore, a first sealing component 401 is provided on the liquid storage component 4. Specifically, in the present embodiment, the first sealing component 401 is preferably a sealing ring and is made of a silicone material. An installation groove for installing the first sealing component 401 is provided on the outer wall surface of the liquid storage component 4. The first sealing component 401 is installed on the liquid storage component 4 through the installation groove and is located between the outer wall of the liquid storage component 4 and the side wall of the outlet 102. Through the above technical solution, the gap between the liquid storage component 4 and the outlet 102 is sealed to prevent the refrigerant from overflowing from the gap, which can be understood by those skilled in the art.

[0035] Furthermore, a cavity opening 108 and a cavity cover plate 106 are also provided on the housing 1. Specifically, in this embodiment, the cavity opening 108 is arranged at the bottom end of the housing 1 and communicates with the refrigerant cavity. An installation structure is provided between the cavity cover plate 106 and the housing 1. An installation step 1061 is provided on the top surface of the cavity cover plate 106. The installation structure includes an external thread provided on the outer wall surface of the installation step 1061 and an internal thread provided on the inner wall surface of the housing 1. When the external thread and the internal thread are screwed together, the cavity cover plate 106 is installed on the housing 1 to cover the cavity opening 108 and seal the refrigerant cavity. Through the above technical solution, it is convenient to open the refrigerant cavity to clean and maintain the inside of the heat exchanger, which can be understood by those skilled in the art.

[0036] Furthermore, a second sealing member 107 is also provided on the housing 1. Specifically, in this embodiment, the second sealing member 107 is preferably a gasket and is made of silica gel material. When the cavity cover plate 106 is installed on the housing 1, the second sealing member 107 is located between the housing 1 and the cavity cover plate 106 and around the cavity opening 108. Through the above technical solution, the gap between the housing 1 and the cavity cover plate 106 is sealed to prevent the refrigerant from leaking out through the gap, which can be understood by those skilled in the art.

[0037] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A condensation heat exchanger, comprising a housing (1) and a cooling tube (2) for exchanging heat with a refrigerant. The housing (1) is provided with a refrigerant cavity, a propellant inlet (101) and a propellant outlet (102), and is characterized in that, The housing (1) is further provided with a partition member (3) having a double-layer side wall. The partition member (3) is disposed in the refrigerant cavity to divide the refrigerant cavity into a first cavity (103) and a second cavity (104) that communicate end to end. The first cavity (103) and the second cavity (104) extend along the length direction of the refrigerant cavity. The cooling pipe (2) is disposed in the first cavity (103) and its two end portions extend out of the housing (1). The propellant inlet (101) is disposed on the upper part of the side wall of the housing (1) and communicates with the first cavity (103). The propellant outlet (102) is disposed on the top surface of the housing (1) and communicates with the second cavity (104).

2. The condensation heat exchanger according to claim 1, characterized in that, The partition member (3) is cylindrical. The central axis of the partition member (3) coincides with the central axis of the housing (1) to form a first cavity (103) with an annular cross-section and a second cavity (104) with a circular cross-section. The first cavity (103) is located outside the second cavity (104). The top end of the partition member (3) is hermetically connected to the inner top surface of the housing (1). A communication gap (105) for communicating the first cavity (103) and the second cavity (104) is left between the bottom end of the partition member (3) and the inner bottom surface of the housing (1).

3. The condensation heat exchanger according to claim 1, wherein, The partition member (3) includes an outer cylinder (301) and an inner cylinder (302). The outer cylinder (301) is disposed outside the inner cylinder (302) and there is a certain gap between them. The top ends of the outer cylinder (301) and the inner cylinder (302) are respectively hermetically connected to the inner top surface of the housing (1). The bottom end of the outer cylinder (301) is hermetically connected to the bottom end of the inner cylinder (302).

4. The condensation heat exchanger according to claim 2, wherein The partition member (3) and the housing (1) are integrally formed, or the partition member (3) and the housing (1) are separately provided.

5. The condensation heat exchanger according to claim 1, wherein The cooling pipe (2) is spiral and wound in the first cavity (103) and extends along the height direction of the housing (1). The cooling pipe (2) is provided with a water inlet (201) and a water outlet (202). The water inlet (201) is disposed at the lower end portion of the cooling pipe (2). The water outlet (202) is disposed at the upper end portion of the cooling pipe (2).

6. The condensation heat exchanger according to claim 1, wherein, The condensation heat exchanger further includes a liquid storage member (4). The liquid storage member (4) is disposed in the middle of the second cavity (104) and extends along the length direction of the second cavity (104). The liquid inlet end of the liquid storage member (4) is located in the lower part of the second cavity (104) and there is a certain distance between it and the bottom surface of the housing (1). The liquid outlet end of the liquid storage member (4) extends out of the housing (1) through the propellant outlet (102).

7. The condensation heat exchanger according to claim 6, characterized in that, A first sealing member (401) is provided on the liquid storage member (4). The first sealing member (401) is located between the outer side wall of the liquid storage member (4) and the side wall of the propellant outlet (102).

8. The condensation heat exchanger according to claim 1, wherein The housing (1) is further provided with a cavity opening (108) and a cavity cover plate (106). The cavity opening (108) is disposed at the bottom end of the housing (1) and communicates with the refrigerant cavity. The cavity cover plate (106) covers the cavity opening (108) to seal the refrigerant cavity.

9. The condensation heat exchanger according to claim 8, characterized in that An installation structure is provided between the cavity cover plate (106) and the housing (1). An installation step (1061) is provided on the top surface of the cavity cover plate (106). The installation structure includes an external thread provided on the outer wall surface of the installation step (1061) and an internal thread provided on the inner wall surface of the housing (1). The external thread and the internal thread are screwed together to install the cavity cover plate (106) on the housing (1).

10. The condensation heat exchanger according to claim 8, wherein, The housing (1) is further provided with a second sealing member (107). The second sealing member (107) is arranged between the housing (1) and the cavity cover plate (106) and is located around the cavity opening (108).

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