Device capable of separating and recycling liquid refrigerant and refrigerant oil

Abstract

The utility model discloses a device capable of separating and recovering liquid refrigerant and refrigerant oil, which relates to the field of energy recovery and comprises a main tank body, a floating ball liquid viewing mirror, a refrigerant recovery tank and an oil recovery tank, a liquid inlet valve is arranged at the top of the main tank body and used for introducing refrigerant oil mixture, the floating ball liquid viewing mirror is communicated with the main tank body, and the oil recovery tank is communicated with the main tank body. The liquid level indicator is used for indicating the liquid level after standing layering in the main tank body; the bottom of the main tank body is communicated with an oil recovery tank through an oil separation pipe, an oil recovery valve is arranged at the bottom of the oil recovery tank, the bottom of the main tank body is communicated with a refrigerant recovery tank through a refrigerant separation pipe, and a refrigerant recovery valve is arranged at the bottom of the refrigerant recovery tank. According to the utility model, the refrigerant recovered from the air conditioning unit is subjected to oil-liquid separation, and the separated refrigerant oil and liquid refrigerant are stored for secondary utilization.

Description

Technical Field

[0001] The utility model relates to the field of energy recovery, and particularly relates to a device capable of separating liquid refrigerant and refrigerant oil and recovering them separately. Background Art

[0002] With the gradual improvement of people's living standards, air-conditioning technology has been widely applied in modern buildings, and the destructive effect of refrigerants on the ozone layer in the atmosphere has become an important issue in the environmental protection field. A refrigerant is a chemical substance used in a refrigeration system and has high thermodynamic properties. Recycling refrigerants can not only reduce waste gas emissions and energy consumption, but also process and reuse the recycled waste refrigerants so that they no longer pollute the environment. There is no device in the prior art that separates and recovers liquid refrigerant and refrigerant oil separately. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide a device capable of separating liquid refrigerant and refrigerant oil and recovering them separately, which separates the refrigerant recovered from an air-conditioning unit into oil and liquid, and stores the separated refrigerant oil and liquid refrigerant for secondary use.

[0004] The purpose of the utility model is achieved by the following technical solutions: This device capable of separating liquid refrigerant and refrigerant oil and recovering them separately includes a main tank body, a float sight glass, a refrigerant recovery tank and an oil recovery tank. An inlet valve is arranged at the top of the main tank body for introducing a refrigerant oil mixture. The float sight glass is communicated with the main tank body and is used to indicate the liquid level after static stratification in the main tank body. The bottom of the main tank body is communicated with the oil recovery tank through an oil separation pipe, and an oil recovery valve is arranged at the bottom of the oil recovery tank. The bottom of the main tank body is communicated with the refrigerant recovery tank through a refrigerant separation pipe, and a refrigerant recovery valve is arranged at the bottom of the refrigerant recovery tank.

[0005] As a further technical solution, the bottom of the main tank body adopts a hemispherical structure, which is convenient for concentrating the oil and liquid.

[0006] As a further technical solution, the inlet valve is communicated with a unit liquid pipe needle valve arranged between an outdoor unit and an indoor unit through a hose to realize the recovery of the refrigerant oil mixture.

[0007] As a further technical solution, the float ball material of the float sight glass has a density less than that of the liquid refrigerant and greater than that of the refrigerant oil.

[0008] As a further technical solution, an oil separation valve is arranged between the oil separation pipe and the oil recovery tank to control the refrigerant oil from entering the oil recovery tank; a refrigerant separation valve is arranged between the refrigerant separation pipe and the refrigerant recovery tank to control the liquid refrigerant from entering the refrigerant recovery tank.

[0009] As a further technical solution, the device is installed on a trolley for easy overall movement.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. The recycled refrigerant-oil mixture first enters the main tank and stands still. The stratification state can be observed through the float liquid level gauge, and the stratification situation of the refrigerant in the main tank can be understood in a timely manner.

[0012] 2. After the liquid refrigerant and refrigerant oil are separated and recycled, they are convenient for reuse, reducing waste and environmental impact, and can significantly reduce refrigerant consumption and energy waste.

[0013] 3. The bottom of the main tank is of a hemispherical structure. When the amount of oil in the tank is small, it can be concentrated near the separation valve, avoiding the situation that a large amount of oil will remain in a flat-bottomed tank bottom and cannot flow into the recovery tank, reducing waste.

[0014] 4. Two recovery tanks are correspondingly connected to two separation valves, which is convenient for controlling the opening and closing of the corresponding separation pipelines, thereby controlling the oil in the main tank to enter the corresponding recovery tank.

[0015] 5. Corresponding recovery valves are provided at the bottom of the recovery tank, which is convenient for recovering the refrigerant oil and liquid refrigerant in the recovery tank or re-adding them to the unit.

[0016] 6. The entire device is fixed on a trolley for easy overall movement, and can prevent damage to the connecting pipes caused by displacement of different components during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model.

[0018] Figure 2 is a schematic connection structure diagram of an air-conditioning unit.

[0019] Figure 3 is a schematic structural diagram of the present utility model when connected to an air-conditioning unit for recovery.

[0020] Description of the reference numerals: main tank 1, liquid inlet valve 2, float liquid level gauge 3, refrigerant separation valve 4, oil separation valve 5, refrigerant recovery tank 6, oil recovery tank 7, refrigerant recovery valve 8, oil recovery valve 9, trolley 10, unit liquid pipe needle valve 11, unit gas pipe needle valve 12, outdoor unit 13, indoor unit 14, oil separation pipe 15, refrigerant separation pipe 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be described in detail below in conjunction with the drawings:

[0022] Embodiment: As shown in the attached Figures 1 to 3As shown, this device for separating liquid refrigerant and refrigerant oil and recovering them separately includes a main tank body 1, a liquid inlet valve 2, a float liquid level gauge 3, a refrigerant separation valve 4, an oil separation valve 5, a refrigerant recovery tank 6, an oil recovery tank 7, a refrigerant recovery valve 8, an oil recovery valve 9, a trolley 10, a unit liquid pipe needle valve 11, a unit gas pipe needle valve 12, an outdoor unit 13, an indoor unit 14, an oil separation pipe 15, and a refrigerant separation pipe 16.

[0023] As Figure 1 shown, a liquid inlet valve 2 is provided at the top of the main tank body 1. The liquid inlet valve 2 can be used to introduce a refrigerant oil mixture into the main tank body 1 or evacuate the main tank body 1 to a vacuum. A float liquid level gauge 3 is provided on one side of the main tank body 1. The float liquid level gauge 3 is interconnected with the main tank body 1 and can indicate the liquid level position after the refrigerant oil mixture in the main tank body 1 is allowed to stand and separate into layers. Preferably, the float in the float liquid level gauge 3 is made of a material with a density between that of the liquid refrigerant and the refrigerant oil and is insoluble in water and oil, that is, the density of the float material is less than that of the liquid refrigerant and greater than that of the refrigerant oil. After the liquid refrigerant and refrigerant oil mixture is allowed to stand in the main tank body 1 for a period of time to separate into layers, the position of the float can be seen through the liquid level gauge. The float can clearly indicate the liquid level position of the liquid refrigerant. Below the float is the liquid refrigerant, and above the float is the refrigerant oil.

[0024] Furthermore, an oil separation pipe 15 and a refrigerant separation pipe 16 are provided at the bottom of the main tank body 1. The main tank body 1 is connected to the oil recovery tank 7 through the oil separation pipe 15. An oil separation valve 5 is provided between the oil separation pipe 15 and the oil recovery tank 7, which can control the entry of refrigerant oil into the oil recovery tank 7. The bottom of the main tank body 1 is also connected to the refrigerant recovery tank 6 through the refrigerant separation pipe 16. A refrigerant separation valve 4 is provided between the refrigerant separation pipe 16 and the refrigerant recovery tank 6, which can control the entry of liquid refrigerant into the refrigerant recovery tank 6. An oil recovery valve 9 is provided at the bottom of the oil recovery tank 7, and a refrigerant recovery valve 8 is provided at the bottom of the refrigerant recovery tank 6, which is convenient for recovering the refrigerant oil and liquid refrigerant in the recovery tank or re-adding them to the unit. Preferably, the bottom of the main tank body 1 adopts a hemispherical structure, which is convenient for concentrating the oil. When the amount of oil in the tank is small, it can be concentrated near the separation valve, avoiding the situation where a large amount of oil will remain in a flat bottom tank and cannot flow into the recovery tank, reducing waste. Preferably, the entire device is installed on a trolley 10, which is convenient for overall movement and can prevent damage to the connecting pipes caused by displacement of different components during use.

[0025] As Figure 2 shown, the air-conditioning unit includes an outdoor unit 13 and an indoor unit 14, which are connected by two pipelines. A unit liquid pipe needle valve 11 is provided on one pipeline, and a unit gas pipe needle valve 12 is provided on the other pipeline. Referring to Figure 3 , the liquid inlet valve 2 is connected to the unit liquid pipe needle valve 11 through a hose to achieve the recovery of the refrigerant oil mixture.

[0026] Working process of the utility model:

[0027] As Figure 2 , 3 shown, taking the recovery of R410A refrigerant from an air-cooled cabinet air conditioner as an example.

[0028] First, close the refrigerant recovery valve 8 and the oil recovery valve 9, open the refrigerant separation valve 4, the oil separation valve 5 and the liquid inlet valve 2, then connect the liquid inlet valve 2 to a vacuum pump to evacuate the whole device. After evacuation, close all valves.

[0029] As Figure 3 shown, use a hose to connect the liquid inlet valve 2 and the liquid pipe needle valve 11 of the unit. After discharging the air in the hose, open the liquid inlet valve 2 to recover the refrigerant into the main tank 1. When the float in the float sight glass 3 reaches the upper scale line, close the liquid inlet valve 2. After standing for a period of time, the liquid refrigerant and refrigerant oil in the main tank 1 are stratified, and the float drops to indicate the stratification level point. Open the refrigerant separation valve 4 to recover the lower-layer liquid refrigerant into the refrigerant recovery tank 6. When the float drops to the bottom of the float sight glass 3, close the refrigerant separation valve 4. Then open the oil separation valve 5 to recover the remaining refrigerant oil in the main tank 1 into the oil recovery tank 7, and then close the oil separation valve 5. Thus, the liquid refrigerant and refrigerant oil are successfully separated and separately recovered.

[0030] It can be understood that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present utility model should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A device capable of separating liquid refrigerant and refrigerant oil and recovering them separately, characterized in that: The invention comprises a main tank body (1), a float sight glass (3), a refrigerant recovery tank (6) and an oil recovery tank (7); a liquid inlet valve (2) is arranged on the top of the main tank body (1) for introducing a refrigerant oil-liquid mixture; the float sight glass (3) and the main tank body (1) are mutually connected and are used to indicate the liquid level in the main tank body (1) after static stratification; the bottom of the main tank body (1) is connected to the oil recovery tank (7) through an oil separation pipe (15); an oil recovery valve (9) is arranged at the bottom of the oil recovery tank (7); the bottom of the main tank body (1) is connected to the refrigerant recovery tank (6) through a refrigerant separation pipe (16); a refrigerant recovery valve (8) is arranged at the bottom of the refrigerant recovery tank (6).

2. The device for separating and recovering liquid refrigerant and refrigerant oil according to claim 1, characterized in that: The bottom of the main tank (1) adopts a hemispherical structure, which is convenient for concentrating oil.

3. The device for separating and recovering liquid refrigerant and refrigerant oil according to claim 1, characterized in that: The liquid inlet valve (2) is connected to a unit liquid pipe needle valve (11) arranged between the outdoor unit (13) and the indoor unit (14) via a leather pipe to achieve recovery of the refrigerant oil-liquid mixture.

4. The device for separating and recovering liquid refrigerant and refrigerant oil according to claim 1, characterized in that: The float material used in the float sight glass (3) has a density less than that of liquid refrigerant and greater than that of refrigerant oil.

5. The device for separating and recovering liquid refrigerant and refrigerant oil according to claim 1, characterized in that: An oil separation valve (5) is provided between the oil separation pipe (15) and the oil recovery tank (7) for controlling the refrigerant oil to enter the oil recovery tank (7); a refrigerant separation valve (4) is provided between the refrigerant separation pipe (16) and the refrigerant recovery tank (6) for controlling the liquid refrigerant to enter the refrigerant recovery tank (6).

6. The device for separating and recovering liquid refrigerant and refrigerant oil according to any one of claims 1 to 5, characterized in that: The device is installed on a trolley (10) to facilitate overall movement.

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