A multi-connected heat exchanger

Abstract

The utility model provides a kind of multi-connected heat exchanger, it is related to heat exchanger field, comprising: base box and control box, the control box is connected in the top of base box, and the outside of control box is connected with heat exchange pipe unit, while base box is connected with heat exchange pipe unit by gas collector tube, and the outside of base box is connected with liquid outlet pipe and liquid inlet pipe, the filter is connected on liquid inlet pipe, the upper end of filter is connected with electronic expansion valve, the upper end of electronic expansion valve is connected with capillary by hanging pipe, the lower end of capillary is connected with distributor, and the branch pipe of distributor is connected with heat exchange pipe unit by lower end, the inside of control box is equipped with baffle, and the side of baffle is slidably connected with first clamping piece, the other side of baffle is equipped with second clamping piece.The utility model has the stable installation of heat exchanger component and is convenient for overhaul, and further strengthens the noise reduction effect of component.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a multi-unit heat exchanger. Background Technology

[0002] With the development of the multi-split air conditioning industry, the capacity of a single multi-split outdoor unit is increasing, while smaller multi-split indoor units, such as small ceiling units, are becoming increasingly popular in the market due to their advantages such as easy installation and small installation space. A search revealed existing technology (publication number: CN215892569U), which describes "a multi-split air conditioner indoor unit heat exchanger with noise reduction function, comprising a heat exchange tube assembly, a liquid inlet pipe assembly, and a gas collecting pipe assembly. The heat exchange tube assembly includes multiple sets of heat exchange tubes; each set of heat exchange tubes is composed of multiple heat exchange tubes connected in series and arranged vertically; the inlet and outlet of each set of heat exchange tubes are respectively connected to a distributor and the gas collecting pipe assembly; the distributor is connected to the liquid inlet pipe assembly after passing through a capillary tube; the liquid inlet pipe assembly and the gas collecting pipe assembly are respectively connected to the refrigerant pipeline of the multi-split air conditioner outdoor unit. This utility model effectively reduces the refrigerant flow velocity entering the heat exchanger by adding a capillary tube after the throttling electronic expansion valve, reducing the impact of the two-phase bubbly refrigerant on the heat exchanger, thereby reducing the flow noise of the refrigerant in the indoor unit and greatly improving the user experience. At the same time, it avoids the need for additional noise reduction devices, reduces costs, and saves space in the indoor unit piping, which is conducive to its widespread adoption."

[0003] While existing multi-split indoor unit heat exchangers have achieved noise reduction, they still have some shortcomings: the existing multi-split indoor unit heat exchangers involve pipes and components with limited installation space, making them difficult to disassemble, inspect, and repair. Furthermore, the fixed structure achieved through pipe connections results in poor stability, and the high-pressure refrigerant vibrates during flow, leading to poor noise reduction. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a multi-split heat exchanger is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a multi-split heat exchanger is provided, comprising: a base box and a control box. The control box is connected to the top of the base box, and a heat exchange tube unit is connected to the outside of the control box. The base box is connected to the heat exchange tube unit via a gas collecting pipe, and an outlet pipe and an inlet pipe are connected to the outside of the base box. A filter is connected to the inlet pipe, and an electronic expansion valve is connected to the upper end of the filter. A capillary tube is connected to the upper end of the electronic expansion valve via a connecting pipe, and a distributor is connected to the lower end of the capillary tube. The distributor is connected to the heat exchange tube unit via a branch pipe extending from its lower end. The control box contains an insulation layer. The partition has a plate, and a first clamping member is slidably connected to one side of the plate. A second clamping member is provided on the other side of the plate. The first clamping member includes a clamping plate and a buffer block. One end of the clamping plate is slidably connected to a guide groove opened in the outer wall of the partition. A double-threaded screw is provided inside the guide groove, and the double-threaded screw is screwed through the clamping plate. The second clamping member includes a front plate and a rear plate. A clamping bolt is screwed inside the front plate, and a movable clamping block is rotatably connected to the inner end of the clamping bolt. Both the base box and the control box are provided with an outer shell, and the outer shell includes an outer metal layer, an inner sound insulation layer, and an inner sound absorption layer.

[0006] Furthermore, the control box is connected to the liquid inlet of the heat exchange tube unit via a pipe, while the liquid return end of the heat exchange tube unit is connected to the liquid outlet inside the base box via a gas collecting pipe.

[0007] Furthermore, the partition is located in the middle of the control box, and the hanging pipe passes through the partition.

[0008] Furthermore, the outer side of the pipes connecting the filter, electronic expansion valve, and capillary tube is equipped with a sound insulation sleeve, and both ends of the pipes are equipped with pipe joints.

[0009] Furthermore, the first clamping member has two sets on one side of the partition, and clamps the filter and the electronic expansion valve on the outside respectively.

[0010] Furthermore, the buffer block is fixed on the opposite side of the clamping plate, and grooves are provided on the opposite side walls of the buffer block.

[0011] Furthermore, the front plate and the rear plate are fixed at both ends to the partition and the inner wall of the control box, respectively, and the movable clamping block is located between the front plate and the rear plate. The movable clamping block is connected to a guide block at the end facing the rear plate, and the guide block is slidably inserted into the guide hole opened on the inner side of the rear plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By utilizing the outer shell of the base box and control box, as well as the metal layer, sound insulation layer and sound absorption layer included in the outer shell, the sound insulation and protection effect of the components inside the box is achieved, thereby reducing the vibration of components and pipes when transporting refrigerant. At the same time, the components inside the box can be protected against impact, as well as moisture and corrosion, extending the service life of the components.

[0014] 2. The clamping plate and clamping block included in the first clamping component facilitate mutual clamping and release through the guide groove and double threaded screw, thereby achieving clamping and fixing of the filter and electromagnetic expansion valve. The front plate and rear plate included in the second clamping component allow the clamping block to move towards the rear plate under the drive of the clamping bolt, thereby cooperating with the rear plate to clamp and fix the distributor. The distributor and capillary tube are integrally connected through a pipe, and the hanging pipe connected to the upper end of the capillary tube is fixed to the partition plate, thereby fixing the capillary tube. This achieves independent and stable fixing of components inside the control box, with gaps and maintenance space between them for easy installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the control box and base box according to an embodiment of the present utility model.

[0017] Figure 3 This is a top view cross-sectional structural diagram of the first clamping member according to an embodiment of the present utility model.

[0018] Figure 4 This is a top view cross-sectional structural diagram of the second clamping member according to an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram of the layered cross-sectional structure of the outer shell material in an embodiment of this utility model.

[0020] In the diagram: 1. Base box; 11. Outlet pipe; 12. Inlet pipe; 2. Control box; 21. Partition plate; 211. Guide groove; 212. Double threaded screw; 22. Hanging pipe; 23. Sound insulation sleeve; 24. Pipe joint; 3. First clamping component; 31. Clamping plate; 32. Buffer block; 4. Second clamping component; 41. Front plate; 42. Rear plate; 43. Moving clamping block; 44. Guide block; 45. Guide groove; 46. Clamping bolt; 5. Filter; 6. Electronic expansion valve; 7. Capillary tube; 8. Distributor; 9. Outer shell; 91. Metal layer; 92. Sound insulation layer; 93. Sound absorption layer; 10. Heat exchange tube unit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 5 As shown, this utility model provides a multi-split heat exchanger, including: a base box 1 and a control box 2. The control box 2 is connected to the top of the base box 1, and a heat exchange tube unit 10 is connected to the outside of the control box 2. The base box 1 is connected to the heat exchange tube unit 10 through a gas collecting pipe, and an outlet pipe 11 and an inlet pipe 12 are connected to the outside of the base box 1. A filter 5 is connected to the inlet pipe 12, and an electronic expansion valve 6 is connected to the upper end of the filter 5. A capillary tube 7 is connected to the upper end of the electronic expansion valve 6 through a connecting pipe 22. A distributor 8 is connected to the lower end of the capillary tube 7, and the distributor 8 is connected to the heat exchange tube unit 10 through a branch pipe leading out from the lower end. A partition 21 is provided inside the control box 2, and one side of the partition 21 is slidably connected to... A first clamping member 3 is attached, and a second clamping member 4 is provided on the other side of the partition 21. The first clamping member 3 includes a clamping plate 31 and a buffer block 32. One end of the clamping plate 31 is slidably connected to a guide groove 211 opened in the outer wall of the partition 21. A double-threaded screw 212 is provided inside the guide groove 211, and the double-threaded screw 212 is screwed through the clamping plate 31. The second clamping member 4 includes a front plate 41 and a rear plate 42. A clamping bolt 46 is screwed inside the front plate 41, and a movable clamping block 43 is rotatably connected to the inner end of the clamping bolt 46. Both the base box 1 and the control box 2 are provided with a shell 9, and the shell 9 includes an outer metal layer 91, an inner sound insulation layer 92, and an inner sound absorption layer 93.

[0023] In this embodiment, the base box 1, the control box 2, the internal components, and the external heat exchange tube unit 10 constitute the main structure of the multi-unit heat exchanger involved in this application.

[0024] Among them, the heat exchange tube unit 10 can be equipped with multiple sets as needed and according to the power matching of the outdoor unit of the air conditioner, so as to realize the heat exchange and cooling effect of multi-split system. This technology, together with the filter 5, electronic expansion valve 6, capillary tube 7 and distributor 8, realizes the cyclic cooling effect of multi-split system, which has been fully disclosed in the comparative documents.

[0025] The functions and principles of filter 5, electronic expansion valve 6, capillary tube 7, and distributor 8 are also fully disclosed in the prior art.

[0026] Specifically, the sound insulation layer 92 is made of polyester fiber, and the sound absorption layer 93 is made of sound-absorbing cotton.

[0027] Specifically, the front end of the double-threaded screw 212 is located on the outside of the partition 21, that is, facing the door, so that the double-threaded screw 212 can be rotated when the door is opened.

[0028] like Figure 2 , Figure 3 and Figure 4 In the control box 2, the inlet end of the heat exchange tube unit 10 is connected to the heat exchange tube unit 10 via a pipe, and the return end of the heat exchange tube unit 10 is connected to the outlet pipe 11 inside the base box 1 via a gas collecting pipe. The partition 21 is located in the middle of the control box 2, and the hanging pipe 22 passes through the partition 21. The pipes connecting the filter 5, the electronic expansion valve 6, and the capillary tube 7 are all equipped with sound insulation sleeves 23 on the outside, and pipe joints 24 are provided at both ends of the pipes. The first clamping member 3 is provided in two sets on one side of the partition 21, and clamps respectively. The buffer block 32 is fixed on the opposite side of the clamping plate 31 and is held on the outside of the filter 5 and the electronic expansion valve 6. The opposite side wall of the buffer block 32 is provided with grooves. The front plate 41 and the rear plate 42 are fixed at both ends on the partition plate 21 and the inner wall of the control box 2, respectively. The movable clamping block 43 is located between the front plate 41 and the rear plate 42. The movable clamping block 43 is connected to the guide block 44 at the end facing the rear plate 42. The guide block 44 is slidably inserted into the guide hole 45 opened on the inner side of the rear plate 42.

[0029] Specifically, the outer ends of the liquid inlet pipe 12 and the liquid outlet pipe 11 are led out from inside the base box 1 and connected to the outdoor unit of the air conditioner to realize the circulation of refrigerant.

[0030] Specifically, a door is provided on the outside of the control box 2, allowing for the disassembly and maintenance of internal components after the door is opened.

[0031] Specifically, the sound insulation sleeve 23 is made of sound insulation cotton, which further reduces the vibration noise generated by the medium flowing inside the pipe.

[0032] In use, the outer shell of the base box and control box, along with its metal, sound-insulating, and sound-absorbing layers, provides sound insulation and protection for the components inside the box. This reduces vibrations in the components and pipes during refrigerant transport. The box also provides impact protection, moisture protection, and corrosion resistance, extending the component's lifespan. The first clamping component, including the clamping plates and blocks, allows for easy clamping and release via guide grooves and double-threaded screws, securing the filter and electromagnetic expansion valve. The second clamping component, including the front and rear plates, allows the clamping blocks to move towards the rear plate under the action of the clamping bolts, thus securing the distributor. The distributor and capillary tube are integrally connected via a pipe, and the upper end of the capillary tube is fixed to the partition plate, securing the capillary tube. This achieves independent and stable fixation of components inside the control box, with sufficient clearance for installation and maintenance.

[0033] The multi-unit heat exchanger of this utility model can effectively solve the problems mentioned in the background technology, and achieve stable installation and easy maintenance of heat exchanger components based on the existing multi-unit heat exchanger technology, as well as further enhance the noise reduction effect of the components.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-split heat exchanger, comprising: The base box (1) and the control box (2) are characterized in that: the control box (2) is connected to the top of the base box (1), and a heat exchange tube unit (10) is connected to the outside of the control box (2). At the same time, the base box (1) is connected to the heat exchange tube unit (10) through a gas collecting pipe. The outside of the base box (1) is connected to an outlet pipe (11) and an inlet pipe (12). A filter (5) is connected to the inlet pipe (12). An electronic expansion valve (6) is connected to the upper end of the filter (5). A capillary tube (7) is connected to the upper end of the electronic expansion valve (6) through a hanging pipe (22). A distributor (8) is connected to the lower end of the capillary tube (7). The distributor (8) is connected to the heat exchange tube unit (10) through a branch pipe led out from the lower end. A partition (21) is provided inside the control box (2), and a first clamping member (3) is slidably connected to one side of the partition (21). The other side of the partition (21) is provided with a second clamping member (4). The first clamping member (3) includes a clamping plate (31) and a buffer block (32). One end of the clamping plate (31) is slidably connected in the guide groove (211) opened on the outer wall of the partition (21). The guide groove (211) is provided with a double threaded screw (212), and the double threaded screw (212) is screwed through the clamping plate (31). The second clamping member (4) includes a front plate (41) and a rear plate (42). The front plate (41) is screwed with a clamping bolt (46), and the inner end of the clamping bolt (46) is rotatably connected with a moving clamping block (43). The base box (1) and the control box (2) are both provided with a shell (9), and the shell (9) includes an outer metal layer (91). The inner side of the metal layer (91) is provided with a sound insulation layer (92), and the inner side of the sound insulation layer (92) is provided with a sound absorption layer (93).

2. A multi-split heat exchanger according to claim 1, characterized in that, The control box (2) is connected to the liquid inlet of the heat exchange tube unit (10) through a pipe, and the liquid return end of the heat exchange tube unit (10) is connected to the liquid outlet pipe (11) inside the base box (1) through a gas collection pipe.

3. A multi-split heat exchanger according to claim 1, characterized in that, The partition (21) is located in the middle of the control box (2), and the connecting pipe (22) passes through the partition (21).

4. A multi-split heat exchanger according to claim 1, characterized in that, The pipes connecting the filter (5), electronic expansion valve (6) and capillary tube (7) are all provided with sound insulation sleeves (23), and pipe joints (24) are provided at both ends of the pipes.

5. A multi-split heat exchanger according to claim 1, characterized in that, The first clamping member (3) has two sets on one side of the partition (21), and clamps the filter (5) and the electronic expansion valve (6) respectively.

6. A multi-split heat exchanger according to claim 1, characterized in that, The buffer block (32) is fixed on the opposite side of the clamping plate (31), and the opposite side wall of the buffer block (32) is provided with a groove.

7. A multi-split heat exchanger according to claim 1, characterized in that, The front plate (41) and the rear plate (42) are fixed at both ends to the partition (21) and the inner wall of the control box (2), respectively. The movable clamp (43) is located between the front plate (41) and the rear plate (42). The movable clamp (43) is connected to a guide block (44) at one end facing the rear plate (42). The guide block (44) is slidably inserted into the guide hole (45) opened on the inner side of the rear plate (42).

Images