An evaporator for a heat source pump unit with high heat exchange efficiency

Abstract

The utility model relates to evaporator technical field, and disclose a kind of evaporator for high-efficiency heat exchange heat source pump unit, the evaporator for high-efficiency heat exchange heat source pump unit, including pipe shell, the inner wall of pipe shell is fixedly installed with partition disc, the inner wall of partition disc is fixedly installed with tube bundle and is penetrated, the inside of pipe shell is provided with drainage component. By being provided with drainage component, refrigerant first enters annular groove when input, and part of refrigerant is output to the bottom position of heat exchange cavity through through-hole by the relatively independent channel in annular groove and heat exchange cavity, while passing through the flow passage in heat exchange cavity, so that refrigerant can be horizontally diffused along drainage belt and arc groove, improve the diffusion range of refrigerant in heat exchange cavity, ensure the effective heat exchange of refrigerant and fluid in tube bundle, reduce the problem that the heat exchange effect of part of fluid in tube bundle is poor due to the relative position of space.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, specifically to an evaporator for a high-efficiency heat exchange heat source pump unit. Background Technology

[0002] Air source heat pumps, a type of heat pump technology, are known as "porters of nature's energy." They offer numerous advantages, including low operating costs, ease of operation, excellent heating performance, safety, and cleanliness. Air source heat pumps utilize the energy in the air as their primary power source, using a small amount of electricity to drive the compressor and transfer energy. The evaporator is a crucial component of the heat source pump unit.

[0003] In existing evaporators, low-temperature condensed liquid passes through the evaporator and exchanges heat with the outside air, vaporizing and absorbing heat to achieve a cooling effect. The evaporator mainly consists of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation to the liquid, causing it to boil and vaporize; the evaporation chamber completely separates the gas and liquid phases.

[0004] However, in actual use, the heat exchange between the evaporator and the tube bundle in existing equipment relies on the flow of cooling water within the tube bundle, while the external refrigerant flows within the evaporator shell to achieve heat exchange. Although the contact area of ​​the tube bundle is increased by setting up several tube bundles, the refrigerant is input from the top and output from the bottom, resulting in an uneven distribution of the refrigerant at the top and bottom of the entire heat exchange chamber, which to some extent affects the heat exchange efficiency within the evaporator. In view of this, we propose an evaporator for a heat source pump unit with high-efficiency heat exchange. Utility Model Content

[0005] The purpose of this invention is to provide an evaporator for a heat source pump unit with high-efficiency heat exchange, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an evaporator for a high-efficiency heat exchange heat source pump unit, comprising a shell, a refrigerant inlet pipe fixedly installed at the top of one end of the shell, a refrigerant outlet pipe fixedly installed at the bottom of the other end of the shell, a heat exchange chamber opened inside the shell, a partition plate fixedly installed on the inner wall of the shell, a water inlet chamber opened on the inner wall of the shell near the refrigerant inlet pipe, a tube bundle being fixedly installed through the inner wall of the partition plate, and a flow guiding assembly provided inside the shell;

[0007] The drainage assembly includes a fixing ring, which is fixedly installed on the inner wall of the tube shell. The outer surface of the fixing ring has an annular groove, and the bottom inner wall of the annular groove has a through hole. A drainage band is fixedly installed on the side wall of the fixing ring, and the outer wall of the drainage band near the center of the tube shell has an annular groove.

[0008] Preferably, the annular groove is disposed between the fixing ring and the inner wall of the tube shell, so that the annular groove is in a relatively closed state.

[0009] Preferably, the number of through holes is set in two sets, and the two sets of through holes are mirror images of each other on the left and right sides of the fixing ring. Each set of through holes contains several through holes, and the several through holes are arranged in a circumferential array on the side of the fixing ring to connect the annular groove and the heat exchange chamber.

[0010] Preferably, the guide band is arranged in a spiral shape, so that the refrigerant can diffuse horizontally along the guide band and the arc-shaped groove.

[0011] Preferably, a dispersion component is provided on the side of the separator plate near the water inlet chamber. The dispersion component includes a guide arc block, which is fixedly installed on the side wall of the separator plate by a thin rod. An opening is provided at the center of the guide arc block, and an arc-shaped cavity is provided on the inner wall of the guide arc block near the separator plate. An arc-shaped strip is fixedly installed on the arc-shaped outer surface of the guide arc block.

[0012] Preferably, the guide arc block is located at the center of the water inlet cavity, and the arc-shaped surface of the guide arc block faces away from the center of the pipe shell, so that the fluid entering the water inlet cavity will first come into contact with the guide arc block. Through the guidance of the arc-shaped outer surface of the guide arc block, some of the fluid will flow towards the edge away from the center of the pipe shell.

[0013] Preferably, the number of arc-shaped bands is set in multiple sets, and the multiple sets of arc-shaped bands are arranged in a circumferential array on the outer surface of the guide arc block. By setting the arc-shaped bands, the dispersion effect of the guide arc block on the fluid entering the water inlet cavity is improved.

[0014] Compared with the prior art, this utility model provides an evaporator for a high-efficiency heat exchange heat source pump unit, which has the following beneficial effects:

[0015] 1. The evaporator of this high-efficiency heat exchange heat source pump unit is equipped with a flow guiding component. When the refrigerant is input, it first enters the annular groove. A portion of the refrigerant is then output to the bottom of the heat exchange chamber through a through hole via the relatively independent channels between the annular groove and the heat exchange chamber. At the same time, through the flow channels in the heat exchange chamber, the refrigerant can diffuse horizontally along the flow guiding band and the arc-shaped groove, increasing the diffusion range of the refrigerant in the heat exchange chamber, ensuring effective heat exchange between the refrigerant and the fluid in the tube bundle, and reducing the problem of poor heat exchange effect for some fluids in the tube bundle due to the relative spatial position.

[0016] 2. The evaporator of this high-efficiency heat exchange heat source pump unit is equipped with a dispersion component. With the port located at the center of the guide arc block, a portion of the fluid will still flow into the central tube bundle. Due to the arc-shaped cavity, the fluid flowing into the central tube bundle will also be dispersed accordingly, ensuring that the fluid can exchange heat more fully and avoiding the ineffective heat exchange that would result in the fluid being concentrated in the central tube bundle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the fixed ring and drainage band structure of this utility model;

[0020] Figure 4 This utility model Figure 4 Enlarged view of region A in the middle;

[0021] Figure 5 This is a cross-sectional view of the guide arc block of this utility model.

[0022] In the diagram: 1. Tube shell; 2. Refrigerant inlet pipe; 3. Refrigerant outlet pipe; 4. Heat exchange chamber; 5. Divider plate; 6. Water inlet chamber; 7. Tube bundle; 8. Drainage assembly; 81. Fixing ring; 82. Annular groove; 83. Through hole; 84. Drainage strip; 85. Arc groove; 9. Dispersion assembly; 91. Guide arc block; 92. Through port; 93. Arc cavity; 94. Arc strip. Detailed Implementation

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: an evaporator for a high-efficiency heat exchange heat source pump unit, including a shell 1, a refrigerant inlet pipe 2 fixedly installed at the top of one end of the shell 1, a refrigerant outlet pipe 3 fixedly installed at the bottom of the other end of the shell 1, a heat exchange chamber 4 opened inside the shell 1, a partition plate 5 fixedly installed on the inner wall of the shell 1, a water inlet chamber 6 opened on the inner wall of the shell 1 near the refrigerant inlet pipe 2, a tube bundle 7 through and fixedly installed on the inner wall of the partition plate 5, and a flow guiding assembly 8 provided inside the shell 1, the flow guiding assembly 8 including a fixing ring 81, an annular groove 82, a through hole 83, a flow guiding band 84, and an arc groove 85.

[0024] In one embodiment of the present invention, a fixing ring 81 is fixedly installed on the inner wall of the tube shell 1. An annular groove 82 is provided on the arc-shaped outer surface of the fixing ring 81. A through hole 83 is provided on the bottom inner wall of the annular groove 82. A drainage band 84 is fixedly installed on the side wall of the fixing ring 81. An arc-shaped groove 85 is provided on the outer wall of the drainage band 84 near the center of the tube shell 1.

[0025] Furthermore, connecting flanges are provided at both ends of the shell 1 and at the ends of the refrigerant inlet pipe 2 and refrigerant outlet pipe 3 to facilitate connection with external equipment and pipelines. At the same time, two sets of partition plates 5 are provided, which are symmetrically arranged on the inner walls of both ends of the shell 1 with the vertical central axis of the shell 1 as the axis of symmetry. In addition, the inner wall of the partition plate 5 is provided with mounting holes of a size that are adapted to the tube bundle 7 to ensure that the tube bundle 7 is arranged horizontally in the shell 1. By setting the tube bundle 7, the effective contact area between the fluid and the refrigerant when passing through the heat exchange chamber 4 is increased, thereby ensuring the heat exchange effect of the evaporator.

[0026] Meanwhile, the fixing ring 81 is fixedly installed on the inner wall of the tube shell 1 near the water inlet cavity 6, and the center of the fixing ring 81 is hollow so that the tube bundle 7 can pass through the fixing ring 81 for installation. In addition, the annular groove 82 is set between the fixing ring 81 and the inner wall of the tube shell 1 so that the annular groove 82 is in a relatively closed state. Furthermore, there are two sets of through holes 83, which are mirror images of each other on the left and right sides of the fixing ring 81. Each set of through holes 83 has several holes, and the through holes 83 are arranged in a circumferential array on the side of the fixing ring 81 to connect the annular groove 82 and the heat exchange cavity 4, so that the refrigerant entering the annular groove 82 can enter the heat exchange cavity 4 through the through holes 83.

[0027] Specifically, the guide band 84 is arranged in a spiral shape, and through the arrangement of the refrigerant inlet pipe 2 and the refrigerant outlet pipe 3, the refrigerant flow in the heat exchange chamber 4 is from right to left and from top to bottom. The spiral guide band 84 allows the refrigerant to diffuse horizontally along the guide band 84 and the arc groove 85, increasing the diffusion range of the refrigerant in the heat exchange chamber 4, ensuring effective heat exchange between the refrigerant and the fluid in the tube bundle 7, and reducing the problem of poor heat exchange effect for some fluids in the tube bundle 7 due to the relative position of the space.

[0028] In addition, a dispersion component 9 is provided on the side of the separator 5 near the water inlet chamber 6. The dispersion component 9 includes a guide arc block 91. The guide arc block 91 is fixedly installed on the side wall of the separator 5 by a thin rod. An opening 92 is provided at the center of the guide arc block 91. An arc-shaped cavity 93 is provided on the inner wall of the guide arc block 91 near the separator 5. An arc-shaped strip 94 is fixedly installed on the arc-shaped outer surface of the guide arc block 91.

[0029] In this embodiment of the present invention, the guide arc block 91 is disposed at the center of the water inlet cavity 6, and the arc-shaped surface of the guide arc block 91 faces away from the center of the tube shell 1. This allows the fluid entering the water inlet cavity 6 to first contact the guide arc block 91. Through the guidance of the arc-shaped outer surface of the guide arc block 91, some of the fluid will flow towards the edge away from the center of the tube shell 1. At the same time, through the setting of the opening 92 at the center of the guide arc block 91, some of the fluid will still flow into the tube bundle 7 at the center. Due to the setting of the arc cavity 93, this part of the fluid flowing into the central tube bundle 7 will also be dispersed accordingly, ensuring that the fluid can exchange heat more fully and avoiding the ineffective heat exchange in the tube bundle 7 at the center. Furthermore, multiple sets of arc-shaped bands 94 are set in a circumferential array on the outer surface of the guide arc block 91. The setting of the arc bands 94 improves the dispersion effect of the guide arc block 91 on the fluid entering the water inlet cavity 6.

[0030] In this invention, during use, both ends of the shell 1 are connected to the piping system of the heat source pump unit, and the refrigerant inlet pipe 2 and refrigerant outlet pipe 3 are respectively connected to the refrigerant pump. When the heat source pump unit is working, the fluid for heat exchange is input into the interior of the shell 1 from one end of the water inlet chamber 6. This fluid is dispersed and guided into the tube bundle 7 set inside the shell 1 by the dispersion component 9. At the same time, through the operation of the refrigerant pumping equipment, the refrigerant enters the heat exchange chamber 4 inside the shell 1 through the refrigerant inlet pipe 2. Heat exchange occurs between the refrigerant and the fluid in the tube bundle 7, thereby causing the refrigerant to vaporize and carry away the heat of the fluid in the tube bundle 7, thus achieving heat exchange. Finally, the vaporized refrigerant is discharged outward through the refrigerant outlet pipe 3.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An evaporator for a high-efficiency heat exchange heat source pump unit, comprising a shell (1), wherein a refrigerant inlet pipe (2) is fixedly installed at the top of one end of the shell (1), and a refrigerant outlet pipe (3) is fixedly installed at the bottom of the other end of the shell (1), a heat exchange chamber (4) is provided inside the shell (1), a partition plate (5) is fixedly installed on the inner wall of the shell (1), a water inlet chamber (6) is provided on the inner wall of the shell (1) near the refrigerant inlet pipe (2), and a tube bundle (7) is fixedly installed through and on the inner wall of the partition plate (5), characterized in that: The tube shell (1) is provided with a drainage component (8); The drainage assembly (8) includes a fixing ring (81), which is fixedly installed on the inner wall of the shell (1). The outer surface of the fixing ring (81) is provided with an annular groove (82), and the inner wall of the bottom of the annular groove (82) is provided with a through hole (83). A drainage band (84) is fixedly installed on the side wall of the fixing ring (81), and the outer wall of the drainage band (84) near the center of the shell (1) is provided with an arc-shaped groove (85).

2. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 1, characterized in that: The annular groove (82) is disposed between the fixing ring (81) and the inner wall of the shell (1).

3. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 1, characterized in that: The number of through holes (83) is set in two sets, and the two sets of through holes (83) are mirror images of the left and right sides of the fixing ring (81). Each set of through holes (83) has a number of holes, and the number of through holes (83) is arranged in a circular array on the side of the fixing ring (81).

4. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 1, characterized in that: The drainage band (84) is arranged in a spiral shape.

5. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 1, characterized in that: The separator (5) is provided with a dispersion component (9) on the side near the water inlet chamber (6). The dispersion component (9) includes a guide arc block (91). The guide arc block (91) is fixedly installed on the side wall of the separator (5) by a thin rod. A through-hole (92) is opened at the center of the guide arc block (91). An arc-shaped cavity (93) is opened on the inner wall of the guide arc block (91) near the separator (5). An arc-shaped strip (94) is fixedly installed on the arc-shaped outer surface of the guide arc block (91).

6. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 5, characterized in that: The guide arc block (91) is located at the center of the water inlet cavity (6), and the arc surface of the guide arc block (91) faces away from the center of the tube shell (1).

7. The evaporator for a high-efficiency heat exchange heat source pump unit according to claim 5, characterized in that: The number of the arc-shaped bands (94) is set in multiple sets, and the multiple sets of arc-shaped bands (94) are arranged in a circumferential array on the outer surface of the guide arc block (91).

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