Hot fluorine defrosting device of air cooler

Abstract

The hot fluorine defrosting device of the air cooler comprises a multi-way valve body, a compressor, a gas-liquid separator, an evaporator and a condenser, two inlets are formed in the top of the condenser, two outlets are formed in the bottom of the condenser, the outlets are formed in the top and the bottom of the gas-liquid separator, one side of the gas-liquid separator is provided with one outlet, and the other side of the gas-liquid separator is provided with one outlet. Inlets are formed in the top and one side of the evaporator, an outlet is formed in the bottom of the evaporator, and a connector a of the multi-way valve body is communicated with an exhaust port of the compressor; the hot fluorine defrosting device of the air cooler has a refrigeration mode and a defrosting mode, the interface state is switched through the multi-way valve body, efficient circulation of efficient refrigeration and defrosting is achieved, the compressor, the evaporator, the condenser, the gas-liquid separator, the first expansion valve and the second expansion valve work cooperatively, and rapid defrosting can be completed without an external heat source.

Description

TECHNICAL FIELD

[0001] The utility model relates to air cooler technical field, specifically, relate to a kind of air cooler hot fluorine defrosting device. BACKGROUND

[0002] Air cooler is a kind of air as cooling medium, high-temperature gas or liquid cooling equipment, it is often used in petroleum, chemical industry, electric power etc.Industry, to replace water cooling mode, save water resources, air cooler passes through fan and makes environment air blow through finned tube, make the medium that flows through pipe inside be cooled, with simple structure, low operating cost, maintenance is easy and so on Advantage.

[0003] However, the heat pump defrosting scheme used in air cooler mainly relies on electric auxiliary heating or system reversal, there are high energy consumption, big liquid strike risk, control complex and other problems, especially in low temperature and high humidity environment, evaporator frost is serious, defrosting incompletely will influence system operating efficiency, even damage compressor. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems existing in the prior art.

[0005] Therefore, one purpose of the utility model lies in providing an air cooler hot fluorine defrosting device, which realizes efficient circulation of refrigeration and defrosting by switching the interface state of the multi-way valve body, and can complete rapid defrosting without external heat source.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an air cooler hot fluorine defrosting device, comprising a multi-way valve body, a compressor, a gas-liquid separator, an evaporator and a condenser.

[0007] The top of the condenser is provided with two inlets, and the bottom is provided with two outlets, the top and the bottom of the gas-liquid separator are provided with outlets, and one side is provided with an outlet, the top and one side of the evaporator are provided with inlets, and the bottom is provided with an outlet.

[0008] The interface a of the multi-way valve body is communicated with the exhaust port of the compressor, the interface b is communicated with one of the inlets at the top of the condenser, the interface c is communicated with the inlet at the top of the evaporator, the interface d is communicated with the outlet at the top of the gas-liquid separator, the interface e is communicated with one of the outlets at the bottom of the condenser, and the interface f is communicated with the suction port of the compressor.

[0009] The other outlet at the bottom of the condenser is communicated with the inlet at one side of the evaporator through a first expansion valve, the outlet at the bottom of the evaporator is communicated with the inlet at one side of the gas-liquid separator, and the outlet at the bottom of the gas-liquid separator is communicated with the other inlet at the top of the condenser through a second expansion valve.

[0010] Preferably, the multi-way valve body is an electric switching valve with six interfaces.

[0011] Preferably, the evaporator is a tube type evaporator.

[0012] Preferably, the first expansion valve and the second expansion valve are both electronic expansion valves.

[0013] Preferably, the gas-liquid separator is arranged between the evaporator and the compressor.

[0014] Preferably, the discharge port and the suction port of the compressor are both provided with a one-way valve.

[0015] Compared with the prior art, the air cooler hot fluorine defrosting device provided by the utility model has two modes of refrigeration and defrosting, realizes efficient refrigeration and efficient defrosting circulation through switching the interface state of the multi-way valve body, and the compressor, the evaporator, the condenser, the gas-liquid separator, the first expansion valve and the second expansion valve work cooperatively, so that rapid defrosting can be completed without external heat source. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 2 is a structure schematic view of the air cooler hot fluorine defrosting device according to the embodiment of the utility model in the refrigeration mode.

[0017] Figure 2 Fig. 3 is a structure schematic view of the air cooler hot fluorine defrosting device according to the embodiment of the utility model in the defrosting mode.

[0018] In the figure: 1, multi-way valve body; 2, compressor; 3, gas-liquid separator; 4, evaporator; 5, condenser; 6, first expansion valve; 7, second expansion valve; 8, one-way valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figure 1 The embodiment of the utility model provides an air cooler hot fluorine defrosting device, which comprises a multi-way valve body 1, a compressor 2, a gas-liquid separator 3, an evaporator 4 and a condenser 5.

[0021] The top of the condenser 5 is provided with two inlets, and the bottom is provided with two outlets, the top and bottom of the gas-liquid separator 3 are provided with outlets, and one side is provided with an outlet, the top and one side of the evaporator 4 are provided with inlets, and the bottom is provided with an outlet, the interface a of the multi-way valve body 1 is communicated with the exhaust port of the compressor 2, the interface b is communicated with one of the inlets at the top of the condenser 5, the interface c is communicated with the inlet at the top of the evaporator 4, the interface d is communicated with the outlet at the top of the gas-liquid separator 3, the interface e is communicated with one of the outlets at the bottom of the condenser 5, and the interface f is communicated with the suction port of the compressor 2.

[0022] The multi-way valve body 1 is communicated with the compressor 2, the gas-liquid separator 3, the evaporator 4 and the condenser 5 through the interfaces, realizes the path switching and directional flow of the refrigerant in the compression, condensation, evaporation, separation and other stages in the refrigeration cycle, and ensures that the system automatically adjusts the refrigerant passage according to different operation modes.

[0023] Further, the gas-liquid separator 3 is arranged between the evaporator 4 and the compressor 2, and the gas-liquid separator 3 is used to separate the liquid refrigerant from the mixture flowing back from the evaporator 4, so as to prevent the liquid from entering the compressor 2 to cause liquid impact damage and ensure the safe operation of the compressor 2.

[0024] Specifically, as shown in Figure 1 The other outlet at the bottom of the condenser 5 is communicated with the inlet at one side of the evaporator 4 through the first expansion valve 6, the outlet at the bottom of the evaporator 4 is communicated with the inlet at one side of the gas-liquid separator 3, and the outlet at the bottom of the gas-liquid separator 3 is communicated with the other inlet at the top of the condenser 5 through the second expansion valve 7.

[0025] Referring to Figure 1 and Figure 2 In use, the compressor 2 delivers high-temperature and high-pressure refrigerant to the condenser 5 through the interfaces a and b of the multi-way valve body 1 to release heat and liquefy the refrigerant, forming high-pressure liquid refrigerant. The high-pressure liquid refrigerant enters the evaporator 4 after throttling by the first expansion valve 6, absorbs environmental heat and evaporates into gas. The low-pressure gas after evaporation flows through the gas-liquid separator 3, so that the liquid in the low-pressure gas is separated, and finally the dry gas returns to the suction port of the compressor 2 through the interfaces d and f of the multi-way valve body 1, completing the refrigeration cycle and achieving the purpose of rapid defrosting.

[0026] In addition, the compressor 2 outputs high-temperature gas refrigerant into the evaporator 4 through the interfaces a and c of the multi-way valve body 1, and defrosting is carried out from top to bottom in the evaporator 4. The gas-liquid mixed refrigerant flows out to the gas-liquid separator 3, wherein the liquid part enters the condenser 5 after throttling and pressure reduction by the second expansion valve 7, evaporates and absorbs heat therein, and then returns to the compressor 2 through the interfaces e and f of the multi-way valve body 1 after turning into gaseous refrigerant, so that defrosting can be completed by using the heat of the compressor 2 itself.

[0027] Further, the multi-way valve body 1 is an electric switching valve with six interfaces, the multi-way valve body 1 switches the on-off state of different interfaces through an electric control mode, realizes automatic switching of different flow paths in the refrigeration system, and the evaporator 4 is a tube type evaporator.

[0028] Specifically, the first expansion valve 6 and the second expansion valve 7 are both electronic expansion valves, the electronic expansion valves accurately adjust the refrigerant flow through electric control, so that the refrigeration and defrosting both have higher control accuracy and response speed.

[0029] As shown in Figure 1 and Figure 2 , the discharge port and the suction port of the compressor 2 are both provided with a one-way valve 8, the one-way valve 8 is used for controlling the refrigerant to flow in only one direction, preventing gas backflow to cause system pressure instability or refrigerant backflow.

[0030] According to the above technical scheme, the working steps of the present scheme are summarized and combed: the air cooler hot fluorine defrosting device provided by the embodiment has two working modes of refrigeration and defrosting. In the refrigeration mode, the compressor 2 delivers high-temperature and high-pressure refrigerant to the condenser 5 through the multi-way valve body 1 interfaces a and b to release heat and liquefy the refrigerant, forming high-pressure liquid refrigerant. The high-pressure liquid refrigerant is throttled by the first expansion valve 6 and then enters the evaporator 4 to absorb environmental heat and evaporate into gas. The low-pressure gas after evaporation flows through the gas-liquid separator 3, so that the liquid in the low-pressure gas is separated, and finally the dry gas returns to the suction port of the compressor 2 through the multi-way valve body 1 interfaces d and f, completing the refrigeration cycle and achieving the purpose of rapid defrosting.

[0031] When switched to the defrosting mode, the compressor 2 outputs high-temperature gas refrigerant into the evaporator 4 through the multi-way valve body 1 interfaces a and c, and defrosting is carried out from top to bottom in the evaporator 4. The gas-liquid mixed refrigerant flows out of the evaporator 4 to the gas-liquid separator 3. The liquid part is throttled and depressurized by the second expansion valve 7 and then enters the condenser 5, where it evaporates and absorbs heat, and then returns to the compressor 2 through the multi-way valve body 1 interfaces e and f, avoiding wet compression and improving the reliability of the air cooler. In addition, when the gaseous refrigerant returns to the compressor 2, the first expansion valve 6 is closed, which can avoid the gaseous refrigerant flowing in the wrong direction. Through the interface state switching of the multi-way valve body 1, the refrigeration mode and the defrosting mode can be quickly switched, and the defrosting does not depend on external heat source input or electric heating auxiliary defrosting. The defrosting is completed by using the heat of the compressor 2 itself, which saves the cost required for defrosting.

[0032] The parts not involved in the utility model are the same as the prior art or can be realized by using the prior art. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An air cooler hot gas defrosting device, comprising a multi-way valve body (1), a compressor (2), a gas-liquid separator (3), an evaporator (4) and a condenser (5), characterized in that: the condenser (5) is provided with two inlets at the top and two outlets at the bottom, the gas-liquid separator (3) is provided with an outlet at the top, an outlet at the bottom and an outlet at one side, and the evaporator (4) is provided with an inlet at the top, an inlet at one side and an outlet at the bottom; the interface a of the multi-way valve body (1) is connected with the exhaust port of the compressor (2), the interface b is connected with one of the inlets at the top of the condenser (5), the interface c is connected with the inlet at the top of the evaporator (4), the interface d is connected with the outlet at the top of the gas-liquid separator (3), the interface e is connected with one of the outlets at the bottom of the condenser (5), and the interface f is connected with the suction port of the compressor (2); the other outlet at the bottom of the condenser (5) is connected with the inlet at one side of the evaporator (4) through a first expansion valve (6), the outlet at the bottom of the evaporator (4) is connected with the inlet at one side of the gas-liquid separator (3), and the outlet at the bottom of the gas-liquid separator (3) is connected with the other inlet at the top of the condenser (5) through a second expansion valve (7).

2. An air cooler hot gas defrosting device as claimed in claim 1, wherein: The multi-way valve body (1) is an electric switching valve with six interfaces.

3. An air cooler hot gas defrosting device as claimed in claim 1, wherein: The evaporator (4) is a tube type evaporator.

4. An air cooler hot gas defrosting apparatus as claimed in claim 1, wherein: The first expansion valve (6) and the second expansion valve (7) are both electronic expansion valves.

5. An air cooler hot gas defrosting apparatus as claimed in claim 1, wherein: The gas-liquid separator (3) is arranged between the evaporator (4) and the compressor (2).

6. An air cooler hot gas defrosting apparatus as claimed in claim 1, wherein: The exhaust port and the suction port of the compressor (2) are both provided with a one-way valve (8).

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