Refrigerator refrigerant filling device
By adopting the design of a gas-liquid separation storage tank and inner rack in the refrigerator refrigerant infusion device, the problem of nitrogen infusion caused by the easy breakage of the skin accumulator is solved, and the stability and refrigeration performance of the refrigerator refrigeration system are improved.
Patent Information
- Application Number
- CN202420386310.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-28
AI Technical Summary
In the existing refrigerator refrigerant infusion device, the skin bag accumulator is prone to breakage, causing nitrogen to mix into the refrigerant conveying pipeline, causing problems such as unilateral heat dissipation, power jitter, and poor refrigeration performance of the refrigerator refrigeration system.
A refrigerator refrigerant infusion device was designed, using a gas-liquid separation storage tank instead of the skin accumulator, and the liquid level information in the liquid storage tank was detected through the liquid level gauge and the electrical control cabinet, and the exhaust valve was automatically controlled to open and close, avoiding the opening and closing of the exhaust valve. Nitrogen gas is mixed into the refrigerant conveying pipeline. In addition, the inner frame is used to buffer the fluctuations of the refrigerant and prevent nitrogen from mixing into the delivery pipeline through the liquid outlet pipe.
It effectively solves the problem that the skin bag accumulator is prone to damage, prevents nitrogen from mixing into the refrigerant conveying pipeline, and avoids the phenomenon of unilateral heat dissipation, power jitter, and poor refrigeration performance of the refrigerator refrigeration system.
Smart Images
Figure CN222459886U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of refrigerants, relates to a filling technology, and is specifically a refrigerator refrigerant filling device. Background Art
[0002] The refrigerator refrigerant filling device is a device used to inject refrigerant into a refrigerator or other refrigeration equipment. Refrigerant is a substance that circulates in the refrigeration cycle to absorb heat and reduce the temperature. The refrigerator's refrigeration system is a closed system formed by a compressor and pipelines. The pipelines are filled with R600a and R290 refrigerants for medium conversion refrigeration, as well as pipes and valves connecting these components. By controlling these components and adjusting valves, the refrigerant can be circulated in the refrigeration cycle, thereby achieving the refrigeration effect of the refrigerator.
[0003] In the prior art, for a traditional refrigerator refrigerant filling device, the refrigerant cylinder is connected to a bladder accumulator, a booster pump, a delivery pipeline and then to a filling machine. The bladder accumulator is a cylindrical iron shell of a fixed size with a bladder filled with N2 inside. The space outside the bladder is connected to the refrigerant pipeline. However, the internal bladder is easily damaged and has a short lifespan. Once damaged, N2 mixes into the refrigerant delivery pipeline, causing unilateral heat dissipation, power jitter, and poor refrigeration performance of the refrigerator refrigeration system. The refrigeration compressor is carbonized and stuck for a long time, which leads to the quality risk of the refrigerator not cooling. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a refrigerator refrigerant filling device, which solves the problem that the bladder accumulator is easily damaged, causing the unilateral heat dissipation power jitter of the refrigerator refrigeration system and poor refrigeration performance.
[0005] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a refrigerator refrigerant filling device is proposed, comprising a refrigerant gas cylinder and a gas-liquid separation storage tank connected to each other, the gas-liquid separation storage tank comprising a liquid storage tank and an exhaust pipe, a liquid inlet pipe and a liquid outlet pipe fixedly installed on the outer wall of the liquid storage tank and connected to the interior of the liquid storage tank, switches are provided on the exhaust pipe, the liquid inlet pipe and the liquid outlet pipe, a liquid level gauge is installed in the liquid storage tank, and an electric control cabinet for detecting the liquid level gauge and opening or closing the switch is also provided in the gas-liquid separation storage tank.
[0006] Preferably, an exhaust valve, a solenoid valve and an exhaust pipe are respectively installed on the exhaust pipe, the liquid inlet pipe and the liquid outlet pipe.
[0007] Preferably, one end of the liquid inlet pipe away from the liquid storage tank is fixed to the refrigerant cylinder, and a switching valve is provided between the refrigerant cylinder and the solenoid valve.
[0008] Preferably, a plurality of branches are arranged at one end of the liquid inlet pipe away from the liquid storage tank, and each branch of the liquid inlet pipe corresponds to the refrigerant cylinder and the switching valve.
[0009] Preferably, the switching valve, the liquid level meter, the exhaust valve and the exhaust pipe are all connected to the electric control cabinet via wires.
[0010] Preferably, a booster pump, a delivery pipeline and a filling machine are fixedly mounted in sequence on one end of the exhaust pipe.
[0011] Preferably, an inner frame floating above the refrigerant is provided inside the liquid storage tank, the liquid level gauge and its external float both penetrate the inner frame, and a baffle is fixedly installed on one end of the inner frame located at the liquid outlet pipe.
[0012] Preferably, the middle portion of the inner frame is in a boss shape, and a plurality of arc grooves are formed on the inner wall.
[0013] Preferably, a through hole is provided on the outer edge of the inner frame.
[0014] Preferably, a clamping plate is provided at one end of the inner frame symmetrical to the baffle, and an arc-shaped opening is provided on the clamping plate.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] By setting a liquid level gauge, an exhaust pipe and an electric control cabinet, the liquid level information in the liquid storage tank is detected by the liquid level gauge. The electric control cabinet sets the initial liquid level control signal to set the normal working liquid level threshold, the exhaust liquid level threshold and time, the empty bottle alarm ventilation liquid level threshold and the pump stop liquid level threshold, and the exhaust valve is opened and closed according to the liquid level of the refrigerant in the liquid storage tank, thereby replacing the bladder accumulator, solving the problem of easy breakage, and effectively reducing the mixing of nitrogen in the liquid storage tank into the refrigerant delivery pipeline, causing unilateral heat dissipation, power jitter and poor refrigeration performance of the refrigerator refrigeration system.
[0017] By setting up the inner frame, as the refrigerant in the liquid storage tank is added or discharged, the inner frame is used to buffer the refrigerant and reduce the fluctuation of the refrigerant in the liquid storage tank. As the refrigerant in the liquid storage tank decreases, the baffle gradually blocks the port of the liquid outlet pipe, thereby preventing the nitrogen in the liquid storage tank from mixing into the refrigerant delivery pipeline from the liquid outlet pipe, thereby playing a role of secondary protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the flow of the refrigerant of the utility model;
[0019] Figure 2 This is a schematic diagram of the control structure of the gas-liquid separation storage tank of the utility model;
[0020] Figure 3 This is a cross-sectional structural diagram of the liquid storage tank of the utility model;
[0021] Figure 4 It is the structural diagram of the inner frame of the utility model.
[0022] The numbers in the figure represent: 1. Refrigerant cylinder; 2. Gas-liquid separation storage tank; 3. Booster pump; 4. Delivery pipeline; 5. Filling machine; 6. Wire; 7. Switching valve; 8. Solenoid valve; 9. Liquid storage tank; 10. Liquid level gauge; 11. Exhaust valve; 12. Exhaust pipe; 13. Electric control cabinet; 14. Liquid inlet pipe; 15. Liquid outlet pipe; 16. Inner frame; 17. Pallet; 18. Through hole; 19. Arc groove; 20. Baffle. DETAILED DESCRIPTION
[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] like Figure 1-Figure 3 As shown, a refrigerator refrigerant filling device includes a refrigerant cylinder 1 and a gas-liquid separation storage tank 2 connected to each other, the gas-liquid separation storage tank 2 includes a liquid storage tank 9 and an exhaust pipe 12, a liquid inlet pipe 14 and a liquid outlet pipe 15 fixedly installed on the outer wall of the liquid storage tank 9 and connected to the inside of the liquid storage tank 9, the liquid inlet pipe 14 is used to fill the refrigerant into the liquid storage tank 9, the liquid outlet pipe 15 is used to discharge the refrigerant in the liquid storage tank 9, the exhaust pipe 12 is used to discharge the gas above the refrigerant in the liquid storage tank 9, and the gas is preferably nitrogen. Switches are provided on the exhaust pipe 12, the liquid inlet pipe 14 and the liquid outlet pipe 15 to facilitate the discharge of refrigerant and nitrogen in the liquid storage tank 9, and an exhaust valve 11, a solenoid valve 8 and the exhaust pipe 12 are respectively installed on the exhaust pipe 12, the liquid inlet pipe 14 and the liquid outlet pipe 15. The liquid storage tank 9 A liquid level meter 10 is installed inside. The liquid level meter 10 can adopt an explosion-proof float level meter or a magnetic flap level meter. The liquid level meter 10 is used to detect the liquid level of the refrigerant in the liquid storage tank 9. An electric control cabinet 13 is also arranged in the gas-liquid separation storage tank 2. The power supply end of the electric control cabinet 13 is connected to the outside world, and the signal port of the liquid level meter 10 is connected to the electric control cabinet 13. The liquid level meter 10 is used to detect the liquid level of the refrigerant in the liquid storage tank 9 in real time, and transmit the detected liquid level value to the electric control cabinet 13. The electric control cabinet 13 sets the nitrogen emission range according to the data of the liquid level meter 10, such as the liquid level control signal sets the normal working liquid level threshold, the exhaust liquid level threshold and time, the empty bottle alarm ventilation liquid level threshold and the pump stop liquid level threshold. The liquid level of the liquid level meter 10 can be detected by the electric control cabinet 13 to realize the opening or closing of the corresponding switch.
[0025] As an implementation method in this embodiment, Figure 1-Figure 3 As shown, the end of the liquid inlet pipe 14 away from the liquid storage tank 9 is fixed to the refrigerant cylinder 1, and a switching valve 7 is arranged between the refrigerant cylinder 1 and the solenoid valve 8. After the switching valve 7 is opened, the refrigerant in the refrigerant cylinder 1 can flow from the solenoid valve 8 into the liquid storage tank 9; in order to increase the rate at which the refrigerant cylinder 1 supplies the refrigerant to the liquid storage tank 9, a plurality of branches are arranged at the end of the liquid inlet pipe 14 away from the liquid storage tank 9, and the ends of each branch of the liquid inlet pipe 14 are connected to the refrigerant cylinder 1, and the switching valve 7 is arranged on the branches. For example, if the liquid level of the first refrigerant cylinder 1 is lower than the baffle by 20%, it is assumed that the first refrigerant cylinder 1 is used up, and the switching valve 7 of the second cylinder is automatically switched to through the electric control cabinet 13, and the switching valve 7 of the first cylinder is closed. If both cylinders are used up, the refrigerant cylinder 1 is replaced;
[0026] As an implementation method in this embodiment, the switching valve 7, the liquid level meter 10, the exhaust valve 11 and the exhaust pipe 12 are all connected to the electric control cabinet 13 through the wire 6, which facilitates communication with the electric control cabinet 13. One end of the exhaust pipe 12 is fixedly installed with a booster pump 3, a delivery pipeline 4 and a filling machine 5 in sequence to achieve the filling of the refrigerant, wherein the liquid storage tank 9 and the filling machine 5 can be linked through a wireless module, and the real-time status of the refrigerant cylinder 1 and the liquid level meter 10 is displayed on the display screen of the filling machine 5.
[0027] As an implementation method in this embodiment, Figure 2-Figure 4 As shown, the liquid storage tank 9 is provided with an inner frame 16, and the inner frame 16 is located at the liquid surface of the refrigerant by buoyancy. The liquid level gauge 10 and the float outside thereof penetrate the inner frame 16, and the inner frame 16 is welded with a baffle 20 at one end of the liquid outlet pipe 15. When the refrigerant in the liquid storage tank 9 decreases, the inner frame 16 gradually blocks the liquid outlet pipe 15 through the baffle 20 as the liquid level of the refrigerant drops, so as to prevent the nitrogen in the liquid storage tank 9 from entering from the liquid outlet pipe 15, so as to prevent the nitrogen from mixing into the refrigerant delivery pipeline 4 through the liquid outlet pipe 15, and avoid the problems of unilateral heat dissipation of the refrigerator refrigeration system, power jitter, poor refrigeration performance, and loud refrigeration airflow and noise of the refrigerator in a short time. The middle part of 6 is in the shape of a boss, and a plurality of arc grooves 19 are provided on the inner wall. The arc grooves 19 are used to guide the water droplets on the surface. With the addition or discharge of the refrigerant in the liquid storage tank 9, the inner frame 16 is used to buffer the refrigerant and reduce the fluctuation of the refrigerant in the liquid storage tank 9. A through hole 18 is provided on the outer edge of the inner frame 16. The through hole 18 is used to reduce the pressure of the nitrogen in the liquid storage tank 9 on the inner frame 16 to avoid the inner frame 16 from being immersed in the refrigerant. A card plate 17 is provided at one end of the inner frame 16 symmetrical to the baffle 20, and an arc-shaped opening is provided on the card plate 17 to facilitate the liquid inlet pipe 14 to be filled with refrigerant into the liquid storage tank 9, and the inner frame 16 floats through the refrigerant.
[0028] As an implementation in this embodiment, the refrigerant cylinder 1 has a capacity of 45-50 kg and a pressure of 3-4 bar, and the liquid storage tank 9 has a refrigerant solution capacity of 4-5 kg and a pressure of 3-4 bar, which is a low-pressure device.
[0029] The working principle of the utility model is as follows: when in use, the refrigerant cylinder 1 is installed on the liquid inlet pipe 14 of the corresponding switching valve 7, and the switching valve 7 and the solenoid valve 8 are opened through the electric control cabinet 13, and the refrigerant in the first refrigerant cylinder 1 flows into the liquid storage tank 9, and the refrigerant is added to the liquid storage tank 9, and the refrigerant in the liquid storage tank 9 is discharged through the exhaust pipe 12, and the refrigerant passes through the booster pump 3, the delivery pipeline 4 and the filling machine 5 in sequence. The electric control cabinet 13 detects the liquid level in the liquid storage tank 9 through the liquid level meter 10. If the refrigerant liquid level in the liquid storage tank 9 When it descends to the exhaust point, the electric control cabinet 13 opens the exhaust valve 11 to discharge the nitrogen in the liquid storage tank 9, realizing gas-liquid separation, ensuring that the refrigerant delivered to the filling machine is completely liquid. At the same time, as the refrigerant in the liquid storage tank 9 decreases, the baffle 20 gradually blocks the port of the liquid outlet pipe 15 of the inner frame 16, thereby preventing the nitrogen in the liquid storage tank 9 from mixing into the refrigerant delivery pipeline 4 from the liquid outlet pipe 15. As the subsequent refrigerant cylinder 1 adds refrigerant into the liquid storage tank 9, the inner frame 16 rises as the refrigerant in the liquid storage tank 9 increases, and then it can start working.
[0030] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.
Claims
1. A refrigerator refrigerant filling device, characterized in that: include: A refrigerant gas cylinder (1) and a gas-liquid separation storage tank (2) are connected to each other, the gas-liquid separation storage tank (2) comprising a liquid storage tank (9) and an exhaust pipe (12), a liquid inlet pipe (14) and a liquid outlet pipe (15) fixedly mounted on the outer wall of the liquid storage tank (9) and connected to the interior of the liquid storage tank (9), the exhaust pipe (12), the liquid inlet pipe (14) and the liquid outlet pipe (15) are all provided with switches, a liquid level meter (10) is installed in the liquid storage tank (9), and an electric control cabinet (13) for detecting the liquid level meter (10) and realizing opening or closing of the switch is also provided in the gas-liquid separation storage tank (2).
2. The refrigerator refrigerant filling device according to claim 1, characterized in that: An exhaust valve (11), a solenoid valve (8) and an exhaust pipe (12) are respectively installed on the exhaust pipe (12), the liquid inlet pipe (14) and the liquid outlet pipe (15).
3. The refrigerator refrigerant filling device according to claim 2, characterized in that: One end of the liquid inlet pipe (14) away from the liquid storage tank (9) is fixed to the refrigerant cylinder (1), and a switching valve (7) is provided between the refrigerant cylinder (1) and the solenoid valve (8).
4. The refrigerator refrigerant filling device according to claim 3, characterized in that: A plurality of branches are arranged at one end of the liquid inlet pipe (14) away from the liquid storage tank (9), and each branch of the liquid inlet pipe (14) corresponds to the refrigerant cylinder (1) and the switching valve (7).
5. The refrigerator refrigerant filling device according to claim 3, characterized in that: The switching valve (7), the liquid level meter (10), the exhaust valve (11) and the exhaust pipe (12) are all connected to the electric control cabinet (13) via a wire (6).
6. The refrigerator refrigerant filling device according to claim 1, characterized in that: A booster pump (3), a delivery pipeline (4) and a filling machine (5) are fixedly mounted in sequence on one end of the exhaust pipe (12).
7. The refrigerator refrigerant filling device according to claim 1, characterized in that: The liquid storage tank (9) is provided with an inner frame (16) floating above the refrigerant, the liquid level gauge (10) and the float outside thereof both penetrate the inner frame (16), and the inner frame (16) is fixedly mounted with a baffle (20) at one end of the liquid outlet pipe (15).
8. The refrigerator refrigerant filling device according to claim 7, characterized in that: The middle part of the inner frame (16) is in the shape of a boss, and a plurality of arc grooves (19) are formed on the inner wall.
9. The refrigerator refrigerant filling device according to claim 7, characterized in that: A through hole (18) is provided on the outer edge of the inner frame (16).
10. The refrigerator refrigerant filling device according to claim 7, characterized in that: A clamping plate (17) is provided at one end of the inner frame (16) symmetrical to the baffle (20), and an arc-shaped opening is provided on the clamping plate (17).