Refrigerant guide assembly of air conditioner and indoor unit

Abstract

The utility model relates to a refrigerant guide assembly and an indoor unit of an air conditioner, which comprise a cylindrical joint, a first refrigerant pipe, a first sealing pipe, a second refrigerant pipe and a second sealing pipe, the cylindrical joint comprises a first column section, a second column section, a refrigerant channel and an exhaust channel, one end of the first refrigerant pipe is communicated with the refrigerant channel, and the other end of the first refrigerant pipe is communicated with the exhaust channel. A first annular channel is formed between the first sealing pipe and the first refrigerant pipe, the first annular channel is communicated with the exhaust channel, the second refrigerant pipe is communicated with the refrigerant channel, a second annular channel is formed between the second sealing pipe and the second refrigerant pipe, and the second annular channel is communicated with the exhaust channel. According to the air conditioner indoor unit, leaked refrigerants in the air conditioner indoor unit can be guided to the open environment outside the air conditioner indoor unit, the refrigerants are prevented from being enriched in the air conditioner indoor unit, and the probability that flammable refrigerants leak into the air conditioner indoor unit to cause explosion and fire disasters is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a refrigerant guiding component and indoor unit of an air conditioner. Background Technology

[0002] Currently, to meet performance requirements, air conditioners are switching from non-flammable refrigerants (such as R410A) to high-performance flammable refrigerants (such as R32 and R290). These high-performance refrigerants also possess flammable and explosive properties. Since existing indoor air conditioner units lack venting capabilities, minor leaks in internal components or welds can lead to fire and explosion hazards if the leaked refrigerant cannot be promptly discharged outdoors. Therefore, preventing flammable refrigerant leaks into the indoor air conditioner unit is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0003] Therefore, this utility model provides a refrigerant guiding component and indoor unit for an air conditioner that prevents flammable refrigerant from leaking into the indoor unit.

[0004] To solve the above-mentioned technical problems, this utility model provides a refrigerant guiding component for an air conditioner, comprising:

[0005] A cylindrical connector, comprising a first cylindrical segment, a second cylindrical segment, a refrigerant passage, and an exhaust passage, wherein the first cylindrical segment and the second cylindrical segment are located at different positions along the length of the cylindrical connector, and the refrigerant passage and the exhaust passage extend through the cylindrical connector along the length of the cylindrical connector;

[0006] The first refrigerant pipe, one end of which is connected to the refrigerant channel near the opening of the first column section;

[0007] The first sealing tube is sleeved on the outside of the first refrigerant pipe, and one end of the first sealing tube is connected to the first column segment. The first sealing tube and the first refrigerant pipe form a first annular channel, and the first annular channel is connected to the exhaust channel near the channel opening of the first column segment.

[0008] The second refrigerant pipe, one end of which is connected to the refrigerant channel near the channel opening of the second column section;

[0009] The second sealing tube is sleeved on the outside of the second refrigerant pipe, and one end of the second sealing tube is connected to the second column segment. A second annular channel is formed between the second sealing tube and the second refrigerant pipe. The second annular channel is connected to the exhaust channel near the channel opening of the second column segment.

[0010] Furthermore, the cylindrical joint is provided with multiple exhaust channels, which are arranged around the refrigerant channel.

[0011] Furthermore, the cylindrical connector is a stepped cylindrical shape, the large-diameter section of the cylindrical connector includes the first cylindrical section and the second cylindrical section, the refrigerant channel penetrates the large end face and the small end face of the cylindrical connector, the exhaust channel penetrates the large end face and the annular stepped surface of the cylindrical connector, the inner wall of the refrigerant channel near the large end face of the cylindrical connector is provided with internal threads, and the outer wall of the small-diameter section of the cylindrical connector is provided with external threads.

[0012] Furthermore, both the first column segment and the second column segment are cylindrical segments, and both the first sealing tube and the second sealing tube are flexible hoses. The first sealing tube is tightly fitted to the outside of the first column segment by a first clamp, and the second sealing tube is tightly fitted to the outside of the second column segment by a second clamp.

[0013] Furthermore, the first sealing tube and the second sealing tube are rubber tubes.

[0014] Furthermore, the cylindrical joint also includes a third column segment, which is located between the first column segment and the second column segment, and the third column segment is provided with an annular groove and a flange portion.

[0015] Furthermore, the cylindrical connector also includes a fourth column segment, which is located on the side of the second column segment away from the first column segment, and the fourth column segment is a prism segment.

[0016] The present invention also provides an indoor unit of an air conditioner, comprising:

[0017] Indoor unit, installed indoors, includes casing and heat exchanger;

[0018] The refrigerant guiding assembly has the cylindrical connector mounted on the housing. The first column segment, the first refrigerant pipe, and the first sealing pipe are located inside the housing. The other end of the first refrigerant pipe is connected to the heat exchanger. The second column segment, the second refrigerant pipe, and the second sealing pipe are located outside the housing. The other end of the second refrigerant pipe is connected to the outdoor unit of the air conditioner.

[0019] Furthermore, the other end of the second sealing tube extends to the outside of the indoor unit or outdoors.

[0020] Furthermore, the annular groove of the refrigerant guiding assembly is fitted with a sealing ring for sealing connection with the mounting hole of the housing, and the flange of the refrigerant guiding assembly is connected to the housing by screws.

[0021] Compared with the prior art, the above-mentioned technical solution of this utility model has the following advantages: The refrigerant guiding component and indoor unit of the air conditioner of this utility model can guide the refrigerant leaking in the indoor unit of the air conditioner to the open environment outside the indoor unit of the air conditioner, prevent the refrigerant from accumulating inside the indoor unit of the air conditioner, and reduce the probability of flammable refrigerant leaking into the indoor unit of the air conditioner and causing explosion and fire. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the refrigerant guiding component of the air conditioner in this utility model.

[0024] Figure 2 This is a schematic diagram of the refrigerant guiding assembly of the air conditioner in this utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of section AA;

[0026] Figure 4 This is a perspective view of the cylindrical connector of this utility model;

[0027] Figure 5 This is the front view of the cylindrical connector in this utility model;

[0028] Figure 6 for Figure 5 Schematic diagram of the BB section;

[0029] Figure 7 This is a side view of the cylindrical connector in this utility model;

[0030] Figure 8 for Figure 7 Schematic diagram of the C-section;

[0031] Figure 9 Front view of the first sealing tube and the second sealing tube;

[0032] Figure 10 for Figure 9 Schematic diagram of the DD section;

[0033] Figure 11 This is a schematic diagram of the first clamp and the second clamp;

[0034] Figure 12 This is a schematic diagram of the installation of the refrigerant guiding component of the air conditioner in this utility model;

[0035] Figure 13 for Figure 12A schematic diagram of the EE section.

[0036] Explanation of reference numerals in the accompanying drawings: 1. Cylindrical connector; 11. First column segment; 12. Second column segment; 13. Refrigerant passage; 14. Exhaust passage; 15. Annular groove; 16. Flange; 17. Fourth column segment; 2. First refrigerant pipe; 3. First sealing pipe; 31. First annular channel; 32. First clamp; 4. Second refrigerant pipe; 5. Second sealing pipe; 51. Second annular channel; 52. Second clamp; 6. Housing. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example 1

[0038] See Figures 1 to 13 The present invention provides an embodiment of a refrigerant guiding component for an air conditioner.

[0039] The refrigerant guiding components of an air conditioner include:

[0040] The cylindrical connector 1 includes a first cylindrical section 11, a second cylindrical section 12, a refrigerant passage 13, and an exhaust passage 14. The first cylindrical section 11 and the second cylindrical section 12 are located at different positions along the length of the cylindrical connector 1. The refrigerant passage 13 and the exhaust passage 14 penetrate the cylindrical connector 1 along the length of the cylindrical connector 1.

[0041] First refrigerant pipe 2, one end of the first refrigerant pipe 2 is connected to the channel opening of the refrigerant channel 13 near the first column segment 11;

[0042] The first sealing tube 3 is sleeved on the outside of the first refrigerant pipe 2, and one end of the first sealing tube 3 is connected to the first column segment 11. The first sealing tube 3 and the first refrigerant pipe 2 form a first annular channel 31, and the first annular channel 31 is connected to the exhaust channel 14 near the channel opening of the first column segment 11.

[0043] The second refrigerant pipe 4, one end of which is connected to the channel opening of the refrigerant channel 13 near the second column section 12;

[0044] The second sealing tube 5 is sleeved on the outside of the second refrigerant pipe 4, and one end of the second sealing tube 5 is connected to the second column segment 12. The second sealing tube 5 and the second refrigerant pipe 4 form a second annular channel 51, which is connected to the exhaust channel 14 near the opening of the second column segment 12.

[0045] The first refrigerant pipe 2 receives and discharges the refrigerant discharged from the indoor unit of the air conditioner. The second refrigerant pipe 4 receives the refrigerant and discharges it to the outdoor unit. The first annular channel 31 receives and discharges refrigerant leaking from the first refrigerant pipe 2. The second annular channel 51 receives leaked refrigerant and discharges it to the outside of the indoor unit. The cylindrical connector 1 connects the first refrigerant pipe 2, the first sealing pipe 3, the second refrigerant pipe 4, and the second sealing pipe 5. The refrigerant channel 13 connects the first refrigerant pipe 2 and the second refrigerant pipe 4. The exhaust channel 14 connects the first annular channel 31 and the second annular channel 51. Finally, the refrigerant discharged from the indoor unit reaches the outdoor unit via the first refrigerant pipe 2, the refrigerant channel 13, and the second refrigerant pipe 4. The refrigerant leaking from the indoor unit reaches the outside of the indoor unit via the first annular channel 31, the exhaust channel 14, and the second annular channel 51. The first annular channel 31 and the second annular channel 51 should not be too narrow, otherwise it will affect the refrigerant flow.

[0046] The refrigerant guiding component of the air conditioner described above can guide the refrigerant leaking from the indoor unit to the open environment outside the indoor unit, preventing the refrigerant from accumulating inside the indoor unit and reducing the probability of flammable refrigerant leaking into the indoor unit and causing an explosion or fire.

[0047] In this embodiment, the cylindrical connector 1 is provided with multiple exhaust channels 14, which are arranged around the refrigerant channel 13.

[0048] By setting multiple exhaust channels 14, the refrigerant in the first annular channel can be quickly and evenly discharged into the second annular channel.

[0049] In this embodiment, the cylindrical connector 1 is a stepped cylindrical shape. The large diameter section of the cylindrical connector 1 includes the first cylindrical section 11 and the second cylindrical section 12. The refrigerant channel 13 penetrates the large end face and the small end face of the cylindrical connector 1. The exhaust channel 14 penetrates the large end face and the annular stepped surface of the cylindrical connector 1. The inner wall of the refrigerant channel 13 near the large end face of the cylindrical connector 1 is provided with internal threads, and the outer wall of the small diameter section of the cylindrical connector 1 is provided with external threads.

[0050] The cylindrical connector 1 has a large end face, a small end face, and an annular stepped surface along its length. The large end face and the small end face are positioned opposite each other, and the annular stepped surface is located between the large end face and the small end face, facing the same direction as the small end face. A first cylindrical segment 11 and a second cylindrical segment 12 are located between the large end face and the annular stepped surface of the cylindrical connector 1. The first cylindrical segment 11 is closer to the large end face of the cylindrical connector 1, and the second cylindrical segment 12 is closer to the annular stepped surface of the cylindrical connector 1. One end of the cylindrical connector 1 has an internal thread, and the other end has an external thread, facilitating the transition connection of the first refrigerant pipe 2 and the second refrigerant pipe 4.

[0051] In this embodiment, the first column segment 11 and the second column segment 12 are both cylindrical segments, the first sealing tube 3 and the second sealing tube 5 are both flexible hoses, the first sealing tube 3 is tightly fitted to the outside of the first column segment 11 by the first clamp 32, and the second sealing tube 5 is tightly fitted to the outside of the second column segment 12 by the second clamp 52.

[0052] On the one hand, it is desirable that the first sealing tube 3 and the second sealing tube 5 can be quickly connected to the cylindrical connector 1; on the other hand, it is desirable that the connection between the first sealing tube 3 and the second sealing tube 5 and the cylindrical connector 1 has a good seal. Setting the first sealing tube 3 and the second sealing tube 5 as flexible hoses can both meet the requirements for quick connection and good sealing of the first sealing tube 3 and the second sealing tube 5.

[0053] In this embodiment, the first sealing tube 3 and the second sealing tube 5 are rubber tubes.

[0054] Rubber hoses are tubular structures made of rubber. Due to the high elasticity, wear resistance, and corrosion resistance of rubber, they are widely used to transport various fluid media.

[0055] In this embodiment, the cylindrical joint 1 further includes a third column segment, which is located between the first column segment 11 and the second column segment 12. The third column segment is provided with an annular groove 15 and a flange portion 16.

[0056] The aforementioned cylindrical joint 1 needs to be installed in the mounting hole of the housing and a sealed connection between the two must be ensured. Therefore, an annular groove 15 and a flange 16 are provided on the third column section. A sealing ring can be installed in the annular groove 15 to ensure a sealed connection between the cylindrical joint 1 and the housing, and the flange 16 can be connected and fixed to the housing.

[0057] In this embodiment, the cylindrical connector 1 further includes a fourth column segment 17, which is located on the side of the second column segment 12 away from the first column segment 11, and the fourth column segment 17 is a prism segment.

[0058] Since the cylindrical connector 1 is generally connected to other pipe fittings via threaded connections, a wrench is needed to position the cylindrical connector 1 during the threaded connection process. The prism segment facilitates positioning with the wrench. Specifically, the aforementioned prism segment is a hexagonal prism, compatible with wrenches available on the market.

[0059] The present invention also provides an indoor unit of an air conditioner, comprising:

[0060] The indoor unit, installed indoors, includes a housing 6 and a heat exchanger (not shown in the figure);

[0061] The aforementioned refrigerant guiding assembly has the cylindrical connector 1 installed in the mounting hole of the housing. The first column section, the first refrigerant pipe, and the first sealing pipe are located inside the housing. The other end of the first refrigerant pipe is connected to the heat exchanger. The second column section, the second refrigerant pipe, and the second sealing pipe are located outside the housing. The other end of the second refrigerant pipe is connected to the outdoor unit of the air conditioner.

[0062] An air conditioner is a device that uses the principle of a refrigeration cycle to regulate indoor temperature, humidity, and air cleanliness by absorbing indoor heat and expelling it outdoors. Its operating principle mainly includes four processes: compression, condensation, expansion, and evaporation. First, the air conditioner compresses low-pressure refrigerant gas into high-pressure gas through the compression process. As the refrigerant is compressed by the compressor, both its temperature and pressure increase. Next, the high-temperature, high-pressure refrigerant gas enters the condenser, where it releases heat and cools into a high-pressure liquid through contact with the outside air. Then, the high-pressure liquid refrigerant enters the evaporator through the expansion valve. Due to the action of the expansion valve, the pressure of the high-pressure liquid refrigerant drops sharply within the expander, and its temperature decreases accordingly. In the evaporator, the high-pressure liquid refrigerant rapidly evaporates into a low-temperature, low-pressure refrigerant gas, absorbing heat from the indoor air, thus lowering the indoor air temperature. Finally, the refrigerant gas is drawn back into the compressor, and the cycle repeats, achieving the absorption and expulsion of indoor heat, thereby regulating the indoor temperature.

[0063] The air inlet of the first annular channel 31 is located inside the indoor unit of the air conditioner, and the air outlet of the second annular channel 51 is located outside the indoor unit of the air conditioner, which can guide the refrigerant leaked inside the indoor unit of the air conditioner to the outside of the indoor unit of the air conditioner.

[0064] In this embodiment, the other end of the second sealing tube 5 extends to the outside of the indoor unit or the outdoors.

[0065] The other end of the second sealing pipe 5 extends to the outside, that is, the outlet of the second annular channel 51 leads to the outside, to prevent refrigerant from remaining in the closed indoor unit or indoors.

[0066] In this embodiment, the annular groove 15 of the refrigerant guide assembly is equipped with a sealing ring (not shown in the figure) for sealing connection with the mounting hole of the housing 6, and the flange 16 of the refrigerant guide assembly is connected to the housing 6 by screws (not shown in the figure).

[0067] The installation process of the indoor unit of the aforementioned air conditioner includes the following steps:

[0068] S1. The factory assembles the cylindrical joint 1, the first refrigerant pipe 2, the first sealing pipe 3, the first clamp 32 and the housing 6. First, the first refrigerant pipe 2 is welded to the cylindrical joint 1, then the first sealing pipe 3 is put on the cylindrical joint 1, and then the first sealing pipe 3 is fixed with the first clamp 32. Then the flange 16 of the cylindrical joint 1 is fixed to the housing 6 with screws.

[0069] S2. Connect the second refrigerant pipe 4, the second sealing pipe 5, and the second clamp 52 in the market installation. First, connect the second refrigerant pipe 4 to the cylindrical connector 1, then put the second sealing pipe 5 on the cylindrical connector 1, and then fix the second sealing pipe 5 with the second clamp 52.

[0070] When the first refrigerant pipe 2 leaks, the leaked refrigerant is discharged from the first annular channel 31 through the exhaust channel 14 of the cylindrical joint 1 to the second annular channel 51 and then to the outside.

[0071] Figure 6 In the diagram, A represents the installation dimensions of the first refrigerant pipe; B represents the inner diameter of the refrigerant flow channel during normal air conditioning operation; and C represents the outer diameter of the mating installation surface of the first sealing pipe. Figure 8 In this context, D represents the diameter of the exhaust channel. Figure 10 In the diagram, E represents the inner diameter of the first and second sealing tubes, H represents the outer diameter of the first and second sealing tubes, and F represents the inner diameter of the first and second clamps. Figure 3 G in the figure represents the outer diameter of the inlet of the first refrigerant pipe.

[0072] Where A=G+0.1, B is smaller than A, C=E+2, the inner diameter of the first sealing tube has a 1mm interference fit on one side with the outer diameter of the first column segment, and the inner diameter of the second sealing tube has a 1mm interference fit on one side with the outer diameter of the second column segment, ensuring that the first and second sealing tubes fit tightly on the column joint without leakage. D=3mm, F=H-3, the outer diameter of the first sealing tube has a 1.5mm interference fit on one side with the inner diameter of the first clamp, and the outer diameter of the second sealing tube has a 1.5mm interference fit on one side with the inner diameter of the second clamp, ensuring that the first clamp can tighten the first sealing tube to the column joint, and the second clamp can tighten the second sealing tube to the column joint.

[0073] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A refrigerant guiding assembly for an air conditioner, characterized in that, include: A cylindrical connector, comprising a first cylindrical segment, a second cylindrical segment, a refrigerant passage, and an exhaust passage, wherein the first cylindrical segment and the second cylindrical segment are located at different positions along the length of the cylindrical connector, and the refrigerant passage and the exhaust passage extend through the cylindrical connector along the length of the cylindrical connector; The first refrigerant pipe, one end of which is connected to the refrigerant channel near the opening of the first column section; The first sealing tube is sleeved on the outside of the first refrigerant pipe, and one end of the first sealing tube is connected to the first column segment. The first sealing tube and the first refrigerant pipe form a first annular channel, and the first annular channel is connected to the exhaust channel near the channel opening of the first column segment. The second refrigerant pipe, one end of which is connected to the refrigerant channel near the channel opening of the second column section; The second sealing tube is sleeved on the outside of the second refrigerant pipe, and one end of the second sealing tube is connected to the second column segment. A second annular channel is formed between the second sealing tube and the second refrigerant pipe. The second annular channel is connected to the exhaust channel near the channel opening of the second column segment.

2. The refrigerant guiding assembly according to claim 1, characterized in that, The cylindrical connector is provided with multiple exhaust channels, which are arranged around the refrigerant channel.

3. The refrigerant guiding assembly according to claim 1, characterized in that, The cylindrical connector is a stepped cylindrical shape. The large-diameter section of the cylindrical connector includes the first cylindrical section and the second cylindrical section. The refrigerant channel passes through the large end face and the small end face of the cylindrical connector. The exhaust channel passes through the large end face and the annular stepped surface of the cylindrical connector. The inner wall of the refrigerant channel near the large end face of the cylindrical connector is provided with internal threads, and the outer wall of the small-diameter section of the cylindrical connector is provided with external threads.

4. The refrigerant guiding assembly according to claim 1, characterized in that, Both the first column segment and the second column segment are cylindrical segments, and both the first sealing tube and the second sealing tube are flexible hoses. The first sealing tube is tightly fitted to the outside of the first column segment by a first clamp, and the second sealing tube is tightly fitted to the outside of the second column segment by a second clamp.

5. The refrigerant guiding assembly according to claim 4, characterized in that, The first sealing tube and the second sealing tube are rubber tubes.

6. The refrigerant guiding assembly according to claim 1, characterized in that, The cylindrical joint further includes a third column segment, which is located between the first column segment and the second column segment. The third column segment is provided with an annular groove and a flange.

7. The refrigerant guiding assembly according to claim 1, characterized in that, The cylindrical connector further includes a fourth column segment, which is located on the side of the second column segment away from the first column segment, and the fourth column segment is a prism segment.

8. An indoor unit of an air conditioner, characterized in that, include: Indoor unit, installed indoors, includes casing and heat exchanger; According to any one of claims 1 to 7, the cylindrical connector is installed on the housing, the first column segment, the first refrigerant pipe and the first sealing pipe are located inside the housing, the other end of the first refrigerant pipe is connected to the heat exchanger, the second column segment, the second refrigerant pipe and the second sealing pipe are located outside the housing, and the other end of the second refrigerant pipe is connected to the outdoor unit of the air conditioner.

9. The indoor unit according to claim 8, characterized in that, The other end of the second sealing tube extends to the outside of the indoor unit or outdoors.

10. The indoor unit according to claim 8, characterized in that, The refrigerant guiding assembly of claim 6 has an annular groove fitted with a sealing ring for sealing connection with the mounting hole of the housing, and the flange of the refrigerant guiding assembly of claim 6 is connected to the housing by screws.

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