A low-temperature scroll air-cooled compression condensing unit with self-defrosting function

Abstract

The utility model discloses a low-temperature vortex air-cooled compression condensing unit with a defrosting function, which relates to the technical field of compression condensing machines, including a compressor, a condensation evaporation component is arranged at one end of a liquid inlet pipe, the air cooler can dissipate the heat of compressed Freon, melt the frost in the air cooler, and complete condensation, the evaporator evaporates the condensed liquid Freon, a thermal expansion valve controls the refrigerant flow entering the evaporator by sensing the superheat of the gaseous refrigerant at the outlet of the evaporator, throttles and reduces the pressure of the high-pressure liquid coming out of the water-cooled condenser, and vaporizes the liquid refrigerant at a low pressure to absorb heat, and a drying filter is arranged to prevent the refrigerant from containing water or water from entering the system due to irreducible elements, etc., because the cross-section through which the thermal expansion valve passes is very small, ice blockage will easily occur, affecting the normal operation of the system, and a water flow control valve is arranged to control the flow of the fluid in the pipeline or to provide flow cut-off protection.

Description

Technical Field

[0001] The utility model relates to the technical field of compression condensing machines, in particular to a low-temperature vortex air-cooled compression condensing unit with a self-defrosting function. Background Art

[0002] At present, most of the defrosting methods of cold air machines are water defrosting and electric heating defrosting. The water defrosting operation takes a long time, and if the defrosting water is not discharged in time, it will cause secondary ice blockage. If electric heating defrosting is used, the energy consumption is high, it is not energy-saving, and there will be unsafe factors.

[0003] In the patent with publication number CN220355780U, a low-temperature vortex air-cooled compression condensing unit with a defrosting function is proposed, which includes a compressor, an oil separator, a four-way reversing valve, an air cooler, a liquid storage tank, an air-cooled condenser, a gas-liquid separator, a defrosting expansion valve, a first one-way valve, a second one-way valve, a liquid supply stop valve, a refrigeration expansion valve, and a third one-way valve. After the compressor defrosts, the high-temperature gaseous Freon is switched through the four-way reversing valve 3, and then from the right outlet through the suction pipe (the suction pipe of the refrigeration) through the three-way on the pipe, enters the fifth one-way valve 14 (the third one-way valve 13 is blocked in the circulation direction), and then passes through the bottom coil of the air cooler 6 for defrosting, and then enters the liquid inlet pipe of the air cooler 6, and then the hot gas Freon passes through the air cooler 6, starts to dissipate heat, melts the frost of the air cooler, and then completes condensation, and then passes through the original return air The pipeline exits the cooling fan 6 and then becomes condensed liquid Freon. Because the outlet of the third one-way valve 13 is the gaseous state of high-pressure Freon, the third one-way valve 13 is not passable at this time. It can only enter the liquid storage tank 7 through the sixth one-way valve 16, and then enter the defrosting expansion valve 8 through the liquid storage tank 7, the drying filter, the solenoid valve, etc., and enter the air condenser 4 through the second one-way valve 12 (the condenser during refrigeration, at this time, the pressure after the valve of the first one-way valve 11 is higher than the pressure before the valve, so the first one-way valve 11 is blocked at this time). Therefore, after the Freon absorbs the heat in the air through the air-cooled condenser 4, the Freon evaporates and becomes gaseous Freon, and then enters the four-way reversing valve 3, enters the compressor 1 for compression, condensation, and evaporation, and the cycle is repeated; when the defrosting is completed, the four-way reversing valve 3 is switched again, and then the refrigeration is normal, but the following problems still exist in this patent:

[0004] The existing condenser does not have the function of sealing and drying when evaporating after compression, resulting in poor overall refrigeration effect of the condenser. The refrigerant contains water or irreducible elements, which can cause the temperature of the liquid to drop significantly, making it easy to cause ice blockage, affecting the normal operation of the system.

[0005] In view of the above problems, it is necessary to design a low-temperature scroll air-cooled compression condensing unit with built-in defrosting function to overcome the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a low-temperature vortex air-cooled compression condensing unit with a self-defrosting function, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A low-temperature scroll air-cooled compression condensing unit with a defrosting function, comprising a compressor, an air intake pipe is arranged at the lower end of the right side of the compressor, a sealing block is arranged on the outer wall of the air intake pipe, a first one-way valve is arranged on the right side of the air intake pipe, a liquid inlet pipe is arranged on the right side of the first one-way valve, and a condensing evaporation component is arranged at one end of the liquid inlet pipe;

[0009] The condensing and evaporating component includes an air cooler arranged on the right side of the liquid inlet pipe, a second one-way valve is arranged on the right side of the air cooler, a sealing box is arranged behind the first one-way valve, a liquid guiding cylinder is arranged at the left end inside the air cooler, a sealing tube is arranged on the right side of the liquid guiding cylinder, a sealing cylinder is arranged on the right side of the sealing tube, an evaporator is arranged in front of the sealing cylinder, a drying filter is arranged inside the sealing cylinder, a sealing gasket is arranged at the rear end of the inner wall of the drying filter, a reversing valve is arranged behind the sealing cylinder, a water flow control valve is arranged on the right side of the sealing cylinder, a liquid outlet is arranged on the right side of the water flow control valve, and a thermal expansion valve is arranged on the top of the liquid outlet.

[0010] As a preferred solution of the utility model, the compressor is detachably connected to the air intake pipe, the air intake pipe is detachably connected to the sealing block, the air intake pipe is detachably connected to the first one-way valve, and the first one-way valve is detachably connected to the liquid inlet pipe.

[0011] As a preferred solution of the utility model, the liquid inlet pipe is detachably connected to the cold air blower, one end of the liquid inlet pipe is connected to one end of the liquid guide tube, and the liquid guide tube is detachably connected to the sealing tube.

[0012] As a preferred solution of the utility model, the sealing tube and the sealing cylinder are detachably connected, the sealing cylinder and the drying filter are detachably connected, and the drying filter and the sealing gasket are detachably connected.

[0013] As a preferred solution of the utility model, the sealing cylinder is detachably connected to the reversing valve, the sealing cylinder is detachably connected to the water flow control valve, and the water flow control valve is detachably connected to the liquid outlet.

[0014] As a preferred solution of the utility model, the liquid outlet is detachably connected to the thermal expansion valve, and the air cooler is connected to the interior of the sealed box. Beneficial Effects

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The low-temperature vortex air-cooled compression condensing unit with built-in defrosting function can dissipate the compressed Freon through the provided air cooler, melt the frost in the air cooler, and complete the condensation. The provided evaporator evaporates the condensed liquid Freon. The provided thermal expansion valve controls the refrigerant flow entering the evaporator by sensing the superheat of the gaseous refrigerant at the outlet of the evaporator, throttling and reducing the pressure of the high-pressure liquid coming out of the water-cooled condenser, and evaporating the liquid refrigerant under low pressure to absorb heat. A drying filter is provided to prevent the refrigerant from containing moisture or entering the system due to irreducible elements. When the high-temperature liquid coming out of the water-cooled condenser enters the thermal expansion valve, the temperature of the liquid will drop significantly, generally below zero. At this time, if there is moisture in the system, since the cross-section through which the thermal expansion valve passes is very small, ice blockage will easily occur, affecting the normal operation of the system. The provided water flow control valve is used to control the fluid flow in the pipeline or provide flow cut-off protection. The provided reversing valve can continue normal refrigeration work after defrosting is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the first one-way valve structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the condensation and evaporation component of the utility model.

[0020] In the figure: 1. compressor; 2. air intake pipe; 3. sealing block; 4. first one-way valve; 5. liquid inlet pipe; 6. condensation evaporation component; 601. air cooler; 602. second one-way valve; 603. sealing box; 604. liquid guide cylinder; 605. sealing pipe; 606. sealing cylinder; 607. evaporator; 608. drying filter; 609. sealing gasket; 610. reversing valve; 611. water flow control valve; 612. liquid outlet; 613. thermal expansion valve. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-3As shown, a low-temperature scroll air-cooled compression condensing unit with a defrosting function includes a compressor 1, an air intake pipe 2 is arranged at the lower end of the right side of the compressor 1, a sealing block 3 is arranged on the outer wall of the air intake pipe 2, a first one-way valve 4 is arranged on the right side of the air intake pipe 2, a liquid inlet pipe 5 is arranged on the right side of the first one-way valve 4, and a condensing evaporation component 6 is arranged at one end of the liquid inlet pipe 5;

[0023] The condensation and evaporation component 6 includes a cold air machine 601 arranged on the right side of the liquid inlet pipe 5, a second one-way valve 602 is arranged on the right side of the cold air machine 601, a sealing box 603 is arranged behind the first one-way valve 4, a liquid guide tube 604 is arranged at the left end inside the cold air machine 601, a sealing tube 605 is arranged on the right side of the liquid guide tube 604, a sealing tube 606 is arranged on the right side of the sealing tube 605, an evaporator 607 is arranged in front of the sealing tube 606, a drying filter 608 is arranged inside the sealing tube 606, a sealing gasket 609 is arranged at the rear end of the inner wall of the drying filter 608, a reversing valve 610 is arranged behind the sealing tube 606, a water flow control valve 611 is arranged on the right side of the sealing tube 606, a liquid outlet 612 is arranged on the right side of the water flow control valve 611, and a thermal expansion valve 613 is arranged on the top of the liquid outlet 612;

[0024] The compressor 1 is detachably connected to the air intake pipe 2, the air intake pipe 2 is detachably connected to the sealing block 3, the air intake pipe 2 is detachably connected to the first one-way valve 4, and the first one-way valve 4 is detachably connected to the liquid inlet pipe 5;

[0025] The liquid inlet pipe 5 is detachably connected to the air cooler 601, one end of the liquid inlet pipe 5 is connected to one end of the liquid guide tube 604, the liquid guide tube 604 is detachably connected to the sealing tube 605; the sealing tube 605 is detachably connected to the sealing tube 606, the sealing tube 606 is detachably connected to the drying filter 608, the drying filter 608 is detachably connected to the sealing gasket 609; the sealing tube 606 is detachably connected to the reversing valve 610, the sealing tube 606 is detachably connected to the water flow control valve 611, the water flow control valve 611 is detachably connected to the liquid outlet 612; the liquid outlet 612 is detachably connected to the thermal expansion valve 613, and the air cooler 601 and the interior of the sealing box 603 are mutually connected;

[0026] The compressed Freon can be dissipated by the air cooler 601, and the frost in the air cooler 601 can be melted to complete the condensation. The evaporator 607 can evaporate the condensed liquid Freon. The thermal expansion valve 613 can control the refrigerant flow entering the evaporator by sensing the superheat of the gaseous refrigerant at the outlet of the evaporator 607, so that the high-pressure liquid coming out of the water-cooled condenser is throttled and depressurized, and the liquid refrigerant is vaporized at a low pressure to absorb heat. A drying filter 608 is provided to prevent the refrigerant from containing water or due to Due to irreducible elements and other reasons, moisture enters the system. When the high-temperature liquid from the water-cooled condenser enters the thermal expansion valve, the temperature of the liquid will drop significantly, generally below zero degrees. At this time, if there is moisture in the system, since the cross-section of the thermal expansion valve 613 is very small, ice blockage will easily occur, affecting the normal operation of the system. The water flow control valve 611 is used to control the flow of fluid in the pipeline or for flow interruption protection. The reversing valve 610 can continue normal refrigeration work after defrosting is completed.

[0027] It should be noted that the utility model is a low-temperature vortex air-cooled compression condensing unit with a defrosting function. When in use, the compressor 1 compresses the Freon and then guides it into the air cooler 601 through the suction pipe 2 using the first non-return valve 4. The heat dissipation work melts the frost in the air cooler 601 to complete the condensation. The liquid guide tube 604 is connected to the liquid inlet pipe 5 to evaporate the condensed liquid Freon through the evaporator 607. The thermal expansion valve 613 controls the refrigerant flow entering the evaporator 607 by sensing the superheat of the gaseous refrigerant at the outlet of the evaporator 607, so that the high-pressure liquid coming out of the water-cooled condenser is throttled and reduced in pressure, so that the liquid refrigerant vaporizes at a low pressure and absorbs heat. The drying filter 608 is used to prevent The refrigerant contains moisture or moisture enters the system due to irreducible elements. When the high-temperature liquid from the water-cooled condenser enters the thermal expansion valve, the temperature of the liquid will drop significantly, generally below zero degrees. At this time, if there is moisture in the system, the drying filter 608 in the sealing cylinder 606 will dry and filter the Freon, and the sealing gasket 609 is used to improve the sealing connection effect between the sealing cylinder 606 and the drying filter 608. Since the cross-section of the thermal expansion valve 613 is very small, ice blockage will easily occur, affecting the normal operation of the system. The water flow control valve 611 is used to control the flow of the fluid in the pipeline or for flow interruption protection. The reversing valve 610 can continue normal refrigeration work after defrosting is completed.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-temperature scroll air-cooled compression condensing unit with a self-defrosting function, comprising a compressor (1), characterized in that: An air intake pipe (2) is provided at the lower end of the right side of the compressor (1), a sealing block (3) is provided on the outer wall of the air intake pipe (2), a first one-way valve (4) is provided on the right side of the air intake pipe (2), a liquid inlet pipe (5) is provided on the right side of the first one-way valve (4), and a condensing evaporation component (6) is provided at one end of the liquid inlet pipe (5); The condensation and evaporation component (6) comprises a cold air blower (601) arranged on the right side of the liquid inlet pipe (5); a second one-way valve (602) is arranged on the right side of the cold air blower (601); a sealing box (603) is arranged behind the first one-way valve (4); a liquid guide tube (604) is arranged at the left end inside the cold air blower (601); a sealing tube (605) is arranged on the right side of the liquid guide tube (604); a sealing tube (606) is arranged on the right side of the sealing tube (605); and the sealing tube (606) is provided at the left end of the inside of the cold air blower (601). An evaporator (607) is arranged at the front, a drying filter (608) is arranged inside the sealing cylinder (606), a sealing gasket (609) is arranged at the rear end of the inner wall of the drying filter (608), a reversing valve (610) is arranged at the rear of the sealing cylinder (606), a water flow control valve (611) is arranged on the right side of the sealing cylinder (606), a liquid outlet (612) is arranged on the right side of the water flow control valve (611), and a thermal expansion valve (613) is arranged on the top of the liquid outlet (612).

2. A low-temperature scroll air-cooled compression condensing unit with a self-defrosting function according to claim 1, characterized in that: The compressor (1) is detachably connected to the air intake pipe (2), the air intake pipe (2) is detachably connected to the sealing block (3), the air intake pipe (2) is detachably connected to the first one-way valve (4), and the first one-way valve (4) is detachably connected to the liquid inlet pipe (5).

3. The low-temperature scroll air-cooled compression condensing unit with self-defrosting function according to claim 1, characterized in that: The liquid inlet pipe (5) is detachably connected to the cooling fan (601), one end of the liquid inlet pipe (5) is connected to one end of the liquid guide tube (604), and the liquid guide tube (604) is detachably connected to the sealing tube (605).

4. The low-temperature scroll air-cooled compression condensing unit with self-defrosting function according to claim 1, characterized in that: The sealing tube (605) and the sealing cylinder (606) are detachably connected, the sealing cylinder (606) and the drying filter (608) are detachably connected, and the drying filter (608) and the sealing gasket (609) are detachably connected.

5. The low-temperature scroll air-cooled compression condensing unit with self-defrosting function according to claim 1, characterized in that: The sealing cylinder (606) and the reversing valve (610) are detachably connected, the sealing cylinder (606) and the water flow control valve (611) are detachably connected, and the water flow control valve (611) and the liquid outlet (612) are detachably connected.

6. The low-temperature scroll air-cooled compression condensing unit with self-defrosting function according to claim 1, characterized in that: The liquid outlet (612) and the thermal expansion valve (613) are detachably connected, and the air cooler (601) and the interior of the sealing box (603) are interconnected.

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