A new air source heat pump exhaust structure

Abstract

The utility model provides a novel air source heat pump exhaust structure, including the gas -liquid separator that is fixedly connected through the buckle structure and the plate heat exchanger hot water export, install the L type three way joint of gas -liquid separator upper end, the automatic exhaust valve of fixed connection in L type three way joint upper end and fixed mounting in L type three way joint side end's pressure -relief valve, install first hose on the export of automatic exhaust valve, install second hose on the export of pressure -relief valve, be provided with the drainage groove at the export of first hose and second hose, the utility model discloses simple structure has solved the safety and exhaust problem of hot water circuit effectively.

Description

Technical Field

[0001] This utility model belongs to the field of air source heat pump technology, and in particular relates to a novel air source heat pump exhaust structure. Background Technology

[0002] In the internal structure of traditional heat pumps, vent valves are typically installed in the external circulating water circuit to expel gas from the water circuit, and pressure relief valves are installed to prevent pipe rupture due to excessive pressure. However, when air source heat pumps use A3-grade refrigerant with flammable and explosive properties, if refrigerant circuit components are damaged or leak, gas may be generated in the hot water circuit. If this flammable and explosive gas enters the user's room through the hot water circuit, it may cause serious consequences such as an explosion. Therefore, there is an urgent need for an air source heat pump venting structure that can promptly separate and expel gas from the air source heat pump unit to the outside, preventing gas from entering the user's room. This would solve the system's venting problem while improving the safety of equipment operation. Summary of the Invention

[0003] The problem this invention aims to solve is to provide a novel air-source heat pump exhaust structure that is simple in structure and effectively addresses the safety and exhaust issues of hot water circuits.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel air source heat pump exhaust structure, including a gas-liquid separator fixedly connected to the hot water outlet of a plate heat exchanger via a snap-fit ​​structure, an L-shaped tee joint installed on the upper end of the gas-liquid separator, an automatic exhaust valve fixedly connected to the upper end of the L-shaped tee joint, and a pressure relief valve fixedly installed on the side end of the L-shaped tee joint. A first hose is installed on the outlet of the automatic exhaust valve, and a second hose is installed on the outlet of the pressure relief valve. Drainage grooves are provided at the outlets of the first hose and the second hose.

[0005] Furthermore, the snap-fit ​​structure includes a first connection port integrally formed with the gas-liquid separator and a second connection port located at the hot water outlet of the plate heat exchanger. The interior of the first connection port is provided with a first stepped hole, a second stepped hole, a third stepped hole, and a fourth stepped hole with gradually increasing diameters, starting from the side closest to the gas-liquid separator. An O-ring is fixedly installed in the second stepped hole, and the inner diameter of the O-ring is equal to the diameter of the first stepped hole. A U-shaped spring clip is fixed on the outer wall of the fourth stepped hole through a first slot. A strip-shaped locking hole matching the U-shaped spring clip is provided on the side wall of the fourth stepped hole. The second connection port includes a first connecting part matching the first stepped hole and the O-ring, a transition part matching the third stepped hole, and a second connecting part with a clearance fit to the fourth stepped hole. A second slot matching the U-shaped spring clip is provided on the second connecting part.

[0006] Furthermore, the plate heat exchanger is provided with a fixing plate, the fixing plate is provided with a cross-shaped locking hole, and the lower end of the gas-liquid separator is provided with a locking plate that matches the cross-shaped locking hole.

[0007] Furthermore, it also includes a unit base, on which the plate heat exchanger is fixedly mounted. A partition plate for mounting a fan motor is fixedly mounted on the unit base. One side of the partition plate is provided with a first corrugated hole for fixing a first hose and a second corrugated hole for fixing a second hose.

[0008] Furthermore, the drainage channel is fixedly installed on the unit base at the outlet of the first hose and the second hose, the bottom surface of the drainage channel is inclined, and a through hole is provided on the unit base at the outlet of the drainage channel.

[0009] Compared with the prior art, the advantages and beneficial effects of this utility model are:

[0010] 1. The exhaust structure of the air source heat pump of this utility model is achieved by installing a gas-liquid separator at the hot water outlet of the plate heat exchanger. When gas is generated in the hot water circuit, the gas accumulates at the top of the gas-liquid separator and is discharged through the gas outlet of the automatic exhaust valve. The discharged gas and a small amount of liquid carried by the gas are discharged into the diversion tank through the first hose and discharged from the unit. This can promptly discharge the gas from the unit, prevent the gas from entering the user's room with the hot water circuit, and improve the safety of equipment operation.

[0011] 2. When the system is overpressurized, the pressure relief valve opens to discharge the overpressurized liquid in the hot water circuit through the pressure relief valve and guide it to the drainage tank through the second hose to discharge it from the unit, effectively controlling the system operating pressure and improving the stability and safety of system operation;

[0012] 3. The first and second hoses of this utility model are fixed by corrugated holes. The corrugated structure increases the friction between the hose and the hose, making the hose firmly fixed and not easy to come out. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a novel air source heat pump exhaust structure according to this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the left-side view structure.

[0015] Figure 3 This is a schematic diagram of the installation structure between the plate heat exchanger and the gas-liquid separator in a novel air source heat pump exhaust structure according to this utility model.

[0016] Figure 4This is an exploded structural diagram of the plate heat exchanger and gas-liquid separator of a novel air source heat pump exhaust structure according to this utility model.

[0017] Figure 5 This is a schematic cross-sectional view of the connection between the plate heat exchanger and the gas-liquid separator in the exhaust structure of a novel air-source heat pump according to this utility model.

[0018] Figure 6 This is a partial structural diagram of the first and second corrugated holes of a novel air source heat pump exhaust structure according to this utility model.

[0019] In the diagram: 1-Plate heat exchanger; 2-Gas-liquid separator; 3-L-type tee connector; 4-Automatic exhaust valve; 5-Pressure relief valve; 6-First hose; 7-Second hose; 8-Drainage groove; 9-First connection port; 10-Second connection port; 11-First stepped hole; 12-Second stepped hole; 13-Third stepped hole; 14-Fourth stepped hole; 15-O-ring seal; 16-First slot; 17-U-shaped spring clip; 18-Strip-shaped slot; 19-First connecting part; 20-Transition part; 21-Second connecting part; 22-Second slot; 23-Fixing plate; 24-Cross-shaped slot; 25-Slot plate; 26-Unit base; 27-Divider plate; 28-First corrugated hole; 29-Second corrugated hole; 30-Through hole. Detailed Implementation

[0020] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-6 As shown, a novel air source heat pump exhaust structure includes a gas-liquid separator 2 fixedly connected to the hot water outlet of a plate heat exchanger 1 via a snap-fit ​​structure, an L-shaped tee joint 3 installed on the upper end of the gas-liquid separator 2, an automatic exhaust valve 4 fixedly connected to the upper end of the L-shaped tee joint 3, and a pressure relief valve 5 fixedly installed on the side end of the L-shaped tee joint 3. A first hose 6 is installed on the outlet of the automatic exhaust valve 4, and a second hose 7 is installed on the outlet of the pressure relief valve 5. Drainage grooves 8 are provided at the outlets of the first hose 6 and the second hose 7.

[0022] The exhaust structure of this utility model for an air source heat pump, by installing a gas-liquid separator 2 at the hot water outlet of the plate heat exchanger 1, allows gas to accumulate at the top of the gas-liquid separator 2 when gas is generated in the hot water circuit. This gas is then discharged through the gas outlet of the automatic exhaust valve 4. The discharged gas and a small amount of liquid carried by the gas are discharged through the first hose 6 onto the diversion trough 8, thus exiting the unit. This timely discharge of gas from the unit prevents it from entering the user's room with the hot water circuit, improving the safety of equipment operation. Simultaneously, when the system is overpressurized, the pressure relief valve 5 opens, discharging the overpressurized liquid in the hot water circuit through the pressure relief valve 5 and guiding it through the second hose 7 to the diversion trough 8 for discharge from the unit. This effectively controls the system's operating pressure, improving the stability and safety of system operation.

[0023] Furthermore, the snap-fit ​​structure includes a first connection port 9 integrally formed with the gas-liquid separator 2 and a second connection port 10 disposed at the hot water outlet of the plate heat exchanger 1. The interior of the first connection port 9, starting from the side closest to the gas-liquid separator 2, is sequentially provided with a first stepped hole 11, a second stepped hole 12, a third stepped hole 13, and a fourth stepped hole 14, with gradually increasing diameters. An O-ring seal 15 is fixedly disposed within the second stepped hole 12, and the inner diameter of the O-ring seal 15 is equal to the diameter of the first stepped hole 11. A U-shaped spring clip 17 is fixed on the outer wall of the fourth stepped hole 14 via a first slot 16. A strip-shaped clip hole 18 matching the U-shaped spring clip 17 is provided on the side wall of the fourth stepped hole 14. The second connection port 10 includes a first connection part 19 matching the first stepped hole 11 and the O-ring 15, a transition part 20 matching the third stepped hole 13, and a second connection part 21 that is clearance-fitted with the fourth stepped hole 14. A second slot 22 matching the U-shaped spring clip 17 is provided on the second connection part 21.

[0024] Specifically, the connection structure between the plate heat exchanger 1 and the gas-liquid separator 2 is as follows: the second connection port 10 on the plate heat exchanger 1 is inserted into the first connection port 9 of the gas-liquid separator 2, so that the first connection part 19 of the second connection port 10 passes through the O-ring seal 15 and is press-fitted with the first stepped hole 11. The O-ring seal 15 plays a good sealing role. At the same time, the connection between the transition part 20 and the second connection part 21 is press-fitted with the third stepped hole 13, which further strengthens the tightness of the connection between the first connection port 9 and the second connection port 10. Finally, the U-shaped spring clip 17 is inserted into the second slot 22 through the strip-shaped clip hole 18 to realize the installation and positioning of the first connection port 9 and the second connection port 10. This clip structure is simple, easy to install, and easy to disassemble.

[0025] Furthermore, the plate heat exchanger 1 is provided with a fixing plate 23, and the fixing plate 23 is provided with a cross-shaped locking hole 24. The lower end of the gas-liquid separator 2 is provided with a locking plate 25 that matches the cross-shaped locking hole 24. By locking the locking plate 25 on the gas-liquid separator 2 into the cross-shaped locking hole 24, the gas-liquid separator 2 is fixed, and at the same time, it plays a positioning role in the relative position of the gas-liquid separator 2 and the plate heat exchanger 1.

[0026] Furthermore, it also includes a unit base 26, on which the plate heat exchanger 1 is fixedly mounted. A partition plate 27 for mounting a fan motor is fixedly mounted on the unit base 26. One side of the partition plate 27 is provided with a first corrugated hole 28 for fixing the first hose 6 and a second corrugated hole 29 for fixing the second hose 7.

[0027] Specifically, the first hose 6 and the second hose 7 are fixed through corrugated holes. The corrugated structure increases friction between the hose and the corrugated hose, making the hose firmly fixed and less prone to detachment. Figure 6 The structure of the first corrugated hole 28 and the second corrugated hole 29 shown can be a pointed structure with internal protrusions arranged in a ring, or a toothed structure with internal protrusions arranged in a ring, or other corrugated holes that can play a fixing role are all within the protection scope of this utility model. In addition, the first hose 6 and the second hose 7 are made of polypropylene (PP).

[0028] Furthermore, the drainage channel 8 is fixedly installed on the unit base 26 at the outlet of the first hose 6 and the second hose 7. The bottom surface of the drainage channel 8 is inclined, and a through hole 30 is provided on the unit base 26 at the outlet of the drainage channel 8.

[0029] Specifically, the liquid flowing out of the first hose 6 and the second hose 7 is guided through the drainage channel 8 to the through hole 30 and discharged outside the unit. At the same time, the gas discharged from the first hose 6 is led out into the air near the drainage channel 8.

[0030] This utility model's air source heat pump connects a gas-liquid separator 2 to the hot water outlet of a plate heat exchanger 1 to separate the gas in the hot water and discharge it through an automatic exhaust valve 4. This effectively prevents the gas from entering the user's room with the hot water, improving system operational safety. It should be noted that this utility model only describes the exhaust structure. For example, the lower end of the gas-liquid separator has an outlet connected to the water circulation system via a pipe. In addition to the hot water outlet, the plate heat exchanger also has a hot water inlet, cold water inlet and outlet connected via pipes to participate in the operation of the heat pump unit. The accompanying drawings partially show the fan motor, evaporator, compressor, and other structures included in the heat pump unit, but do not elaborate on them. However, the technical improvements made under the normal operating principle of the heat pump unit in this utility model have fully disclosed the structures requiring protection.

[0031] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A novel air source heat pump exhaust structure, characterized in that: The device includes a gas-liquid separator that is fixedly connected to the hot water outlet of a plate heat exchanger via a snap-fit ​​structure, an L-shaped tee joint installed on the upper end of the gas-liquid separator, an automatic air vent valve fixedly connected to the upper end of the L-shaped tee joint, and a pressure relief valve fixedly installed on the side end of the L-shaped tee joint. A first hose is installed on the outlet of the automatic air vent valve, and a second hose is installed on the outlet of the pressure relief valve. Drainage grooves are provided at the outlets of the first hose and the second hose.

2. A novel air source heat pump exhaust structure according to claim 1, characterized in that: The snap-fit ​​structure includes a first connection port integrally formed with the gas-liquid separator and a second connection port located at the hot water outlet of the plate heat exchanger. The interior of the first connection port, starting from the side closest to the gas-liquid separator, is sequentially provided with a first stepped hole, a second stepped hole, a third stepped hole, and a fourth stepped hole, each with gradually increasing diameters. An O-ring is fixedly installed in the second stepped hole, the inner diameter of which is equal to the diameter of the first stepped hole. A U-shaped spring clip is fixed to the outer wall of the fourth stepped hole via a first slot. A strip-shaped locking hole matching the U-shaped spring clip is provided on the side wall of the fourth stepped hole. The second connection port includes a first connecting part matching the first stepped hole and the O-ring, a transition part matching the third stepped hole, and a second connecting part with a clearance fit to the fourth stepped hole. A second slot matching the U-shaped spring clip is provided on the second connecting part.

3. A novel air source heat pump exhaust structure according to claim 1, characterized in that: The plate heat exchanger is provided with a fixing plate, and the fixing plate is provided with a cross-shaped locking hole. The lower end of the gas-liquid separator is provided with a locking plate that matches the cross-shaped locking hole.

4. The novel air-source heat pump exhaust structure according to claim 1, characterized in that: It also includes a unit base, on which the plate heat exchanger is fixedly mounted. A partition plate for installing a fan motor is fixedly mounted on the unit base. One side of the partition plate is provided with a first corrugated hole for fixing a first hose and a second corrugated hole for fixing a second hose.

5. A novel air source heat pump exhaust structure according to claim 4, characterized in that: The drainage channel is fixedly installed on the unit base at the outlet of the first hose and the second hose. The bottom surface of the drainage channel is inclined, and a through hole is provided on the unit base at the outlet of the drainage channel.

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