Air conditioner refrigerating system of supercooling pipe device

Abstract

The utility model relates to the field of air conditioners, in particular to an air conditioner refrigerating system of a supercooling pipe device, which comprises a compressor, an expansion valve, an evaporator and a condenser, the condenser comprises an axial flow fan and a refrigerant pipeline assembly, and the refrigerant pipeline assembly comprises a first refrigerant pipeline and a second refrigerant pipeline which are communicated with each other. The second refrigerant pipeline is arranged at the bottom of the first refrigerant pipeline, during refrigeration in summer, a high-temperature refrigerant discharged from the compressor enters the refrigerant pipeline assembly, firstly passes through the first refrigerant pipeline and then passes through the second refrigerant pipeline to enter the expansion valve, and during heating in winter, a low-temperature refrigerant discharged from the expansion valve enters the refrigerant pipeline assembly, only passes through the first refrigerant pipeline and then passes through the second refrigerant pipeline to enter the expansion valve. And entering a compressor. The technical problems that in the prior art, an air conditioner is poor in condensation and heat dissipation effect during refrigeration in summer, and the surface of a condenser is frosted and blocked by ice during heating in winter are solved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to an air conditioning refrigeration system of a supercooling pipe device. Background Art

[0002] Conventional air-conditioning and refrigeration systems generally have the problem that when cooling in the summer, the condensation and heat dissipation effect is poor under high ambient temperatures, resulting in too high a high pressure in the system and no subcooling operation value, which increases the power consumption of the system while reducing the refrigeration capacity. When heating in the winter, under low ambient temperatures, the evaporation temperature is too low, which can easily cause frost and ice blockage on the surface of the fin-type condenser, resulting in low low pressure in the system, causing unstable system operation and shutdown. The air-conditioning and refrigeration system with the subcooling pipe device is designed to solve this problem, improve the operating stability, efficiency and capacity of the equipment, and has a wide range of applications. Summary of the invention

[0003] In order to solve the technical problems in the prior art that the air conditioner has poor condensation and heat dissipation effect during summer cooling and frost and ice blockage on the condenser surface during winter heating, the present application proposes an air conditioning refrigeration system with a supercooling pipe device to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The utility model provides an air-conditioning refrigeration system of a supercooling pipe device, comprising a compressor, an expansion valve, an evaporator and a condenser, the condenser comprising: an axial flow fan for a refrigerant pipe assembly; a refrigerant pipe assembly, the refrigerant pipe assembly comprising a first refrigerant pipe and a second refrigerant pipe that are interconnected, the second refrigerant pipe being arranged at the bottom of the first refrigerant pipe, and the first refrigerant pipe being arranged at the center of the wind flux coverage of the axial flow fan, and the second refrigerant pipe being arranged at the edge of the wind flux coverage of the axial flow fan; during summer cooling, the high-temperature refrigerant discharged from the compressor enters the refrigerant pipe assembly, first passes through the first refrigerant pipe and then passes through the second refrigerant pipe to enter the expansion valve; during winter heating, the low-temperature refrigerant discharged from the expansion valve enters the refrigerant pipe assembly, only passes through the first refrigerant pipe to enter the compressor.

[0006] Furthermore, a three-way valve is arranged at the connection between the first refrigerant pipe and the second refrigerant pipe, port a of the three-way valve is connected to the first refrigerant pipe, port b of the three-way valve is connected to the first end of the second refrigerant pipe, and port c of the three-way valve is connected to the outlet of the expansion valve.

[0007] Furthermore, the port c of the three-way valve is provided with a valve for opening and closing.

[0008] Furthermore, a first one-way valve is arranged between the port c of the three-way valve and the outlet of the expansion valve, so that the refrigerant can only flow from the outlet of the expansion valve to the port c of the three-way valve.

[0009] Furthermore, a second one-way valve is arranged between the second end of the second refrigerant pipe and the inlet of the expansion valve, so that the refrigerant can only flow from the second end of the second refrigerant pipe to the inlet of the expansion valve.

[0010] Furthermore, the length of the second refrigerant pipeline is shorter than the length of the first refrigerant pipeline.

[0011] Based on the above technical solution, the technical effects that can be achieved by the utility model are:

[0012] The air-conditioning refrigeration system of the supercooling pipe device of the utility model, the refrigerant pipe assembly includes a first refrigerant pipe and a second refrigerant pipe which are interconnected. Due to the limitation of the size of the air-conditioning outdoor unit, it is impossible to arrange all the refrigerant pipe assemblies at the center of the wind flux coverage of the axial flow fan. The air-conditioning refrigeration system of the supercooling pipe device of the utility model arranges the second refrigerant pipe at the bottom of the first refrigerant pipe, and the first refrigerant pipe is arranged at the center of the wind flux coverage of the axial flow fan, and the second refrigerant pipe is arranged at the edge of the wind flux coverage of the axial flow fan. During summer cooling, the high-temperature refrigerant discharged from the compressor enters the refrigerant pipe assembly, first passes through the first refrigerant pipe and then passes through the second refrigerant pipe to enter the expansion valve. The condensation heat dissipation effect of the first refrigerant pipe is the same as the condensation heat dissipation effect of the air conditioner in the prior art. The second refrigerant pipe becomes an additional condensation heat dissipation channel as a supercooling operation unit, which improves the air-conditioning refrigeration system of the supercooling pipe device of the utility model. The condensation heat dissipation effect during summer cooling and winter heating, the low-temperature refrigerant discharged from the expansion valve enters the refrigerant pipe assembly and only passes through the first refrigerant pipe to enter the compressor. During winter heating, the outdoor temperature is low. When the condenser placed outdoors is evaporating and absorbing heat, the evaporation temperature is too low, which can easily cause ice on the surface of the outdoor condenser, thereby affecting the normal operation of the system. Due to the limitation of the size of the air-conditioning outdoor unit, the lowest point of the refrigerant pipe assembly is far away from the axial flow fan and the air flow organization, the air circulation at the lowest point is small, and effective heat exchange cannot be achieved, which can easily cause the transfer of ice from the lowest point to the upper side. However, because of the second refrigerant pipe, the lowest point with the worst heat exchange is shielded, thereby greatly reducing the possibility of ice formation and improving the stability of the system operation. In summary, the air-conditioning refrigeration system of the supercooling pipe device of the utility model solves the technical problems of poor condensation and heat dissipation effect of the air-conditioning in the prior art during summer cooling and frost and ice blockage on the condenser surface during winter heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A schematic diagram of an air conditioning refrigeration system of the supercooling pipe device of the utility model;

[0014] Figure 2 This is a partial enlarged view of the condenser of the air conditioning refrigeration system of the supercooling pipe device of the utility model.

[0015] In the utility model: 1-compressor; 2-expansion valve; 3-evaporator; 4-condenser, 41-first refrigerant pipeline, 42-second refrigerant pipeline, 43-three-way valve, 44-first check valve, 45-second check valve; 5-four-way valve. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] like Figure 1-2As shown, in a specific embodiment of the utility model, the air conditioning refrigeration system of the supercooling pipe device mainly includes a compressor 1, a condenser 4, an expansion valve 2, an evaporator 3, a four-way valve 5 and other valve devices, the condenser 4 includes an axial flow fan and a refrigerant pipe assembly, the axial flow fan is used for the refrigerant pipe assembly, the refrigerant pipe assembly includes a first refrigerant pipe 41 and a second refrigerant pipe 42 that are interconnected, the second refrigerant pipe 42 is arranged at the bottom of the first refrigerant pipe 41, and the first refrigerant pipe 41 is arranged at the center of the wind flux coverage of the axial flow fan, and the second refrigerant pipe 42 is arranged at the axial flow fan. At the edge covered by the wind flux, during summer cooling, the high-temperature refrigerant discharged from the compressor 1 enters the refrigerant pipe assembly, first passes through the first refrigerant pipe 41 and then passes through the second refrigerant pipe 42 to enter the expansion valve 2. During winter heating, the low-temperature refrigerant discharged from the expansion valve 2 enters the refrigerant pipe assembly, only passes through the first refrigerant pipe 41 and enters the compressor 1. The main function of the system is to cool and dehumidify or heat the supply air under all-season conditions throughout the year. During summer cooling and dehumidification conditions, the refrigerant discharged from the compressor 1 is a high-temperature and high-pressure gas, which passes through the four-way valve 5 and passes through the outdoor condenser After the first refrigerant pipe 41 of 4 is condensed, it is condensed again through the second refrigerant pipe 42, and the refrigerant becomes a high-temperature and high-pressure liquid. After throttling through the expansion valve 2, the refrigerant becomes a low-temperature and low-pressure liquid. After evaporation and heat absorption through the indoor evaporator 3, the refrigerant becomes a low-temperature and low-pressure gas and returns to the compressor 1 for the cycle of suction, compression and exhaust. For a conventional air-conditioning refrigeration system, conventional standard design, during refrigeration: the national standard operating ambient temperature is 35°C. When the ambient temperature rises in summer, the actual values ​​of the evaporation temperature, condensation temperature, etc. increase with the increase of the ambient temperature. For example, when the evaporation temperature is 7°C and the condensation temperature is 54°C, the supercooling degree is 1°C. , due to the second refrigerant pipeline 42, when the evaporation temperature reaches 7℃ and the condensation temperature reaches 54℃, the supercooling degree is 3℃, which can increase the refrigeration capacity by 4.5%; in the winter heat pump heating condition, the refrigerant discharged by the compressor 1 is a high-temperature and high-pressure gas. After passing through the four-way valve 5 and the condensation of the indoor evaporator 3, the refrigerant becomes a high-temperature and high-pressure liquid. After throttling by the expansion valve 2, the refrigerant becomes a low-temperature and low-pressure liquid. Because it no longer passes through the second refrigerant pipeline 42, the bottom pipeline flow of the outdoor condenser 4 is shielded, which greatly reduces the possibility of icing. The refrigerant that becomes a low-temperature and low-pressure gas after absorbing heat and evaporating returns to the compressor 1 for the cycle of suction, compression and exhaust. In the operation of the refrigeration and dehumidification precision processing and control system, the compressor 1 frequency conversion system is used to operate, which can accurately operate and adjust the refrigeration capacity, and accurately control the air temperature and air humidity after evaporation and direct expansion; in the operation of the heating and heating control system, the compressor 1 frequency conversion system is used to operate, which can accurately operate and adjust the heating capacity, and accurately control the air supply temperature after the heat pump direct expansion.The air conditioning refrigeration system of the supercooling pipe device of the utility model achieves the air conditioning use effect while greatly improving the stability of system operation, achieving the comprehensive application effect of energy saving and emission reduction, and obtaining good economic effects.

[0018] In order to specifically realize the above-mentioned operating effect, in a specific embodiment of the utility model, a three-way valve 43 is arranged at the connection between the first refrigerant pipe 41 and the second refrigerant pipe 42, the port a of the three-way valve 43 is connected to the first refrigerant pipe 41, the port b of the three-way valve 43 is connected to the first end of the second refrigerant pipe 42, and the port c of the three-way valve 43 is connected to the outlet of the expansion valve 2.

[0019] Furthermore, the c port of the three-way valve 43 is configured with a valve for opening and closing. For cooling in summer, the valve of the c port is opened to allow the refrigerant to flow from the first refrigerant pipe 41 to the second refrigerant pipe 42; for heating in winter, the valve of the c port is closed to prevent the refrigerant flowing out of the expansion valve 2 from entering the second refrigerant pipe 42 to form frost.

[0020] Furthermore, a first one-way valve 44 is disposed between the port c of the three-way valve 43 and the outlet of the expansion valve 2 , so that the refrigerant can only flow from the outlet of the expansion valve 2 to the port c of the three-way valve 43 .

[0021] Furthermore, a second one-way valve 45 is disposed between the second end of the second refrigerant pipe 42 and the inlet of the expansion valve 2 , so that the refrigerant can only flow from the second end of the second refrigerant pipe 42 to the inlet of the expansion valve 2 .

[0022] In a specific embodiment of the present invention, the length of the second refrigerant pipe 42 is shorter than the length of the first refrigerant pipe 41 .

[0023] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. An air conditioning refrigeration system of a subcooling pipe device, comprising a compressor (1), an expansion valve (2), an evaporator (3) and a condenser (4), characterized in that: The condenser (4) comprises: Axial fans for refrigerant piping components; A refrigerant pipe assembly, the refrigerant pipe assembly comprising a first refrigerant pipe (41) and a second refrigerant pipe (42) which are interconnected, the second refrigerant pipe (42) being arranged at the bottom of the first refrigerant pipe (41), and the first refrigerant pipe (41) being arranged at the center of the wind flux coverage of the axial flow fan, and the second refrigerant pipe (42) being arranged at the edge of the wind flux coverage of the axial flow fan; During summer cooling, the high-temperature refrigerant discharged from the compressor (1) enters the refrigerant pipe assembly, first passes through the first refrigerant pipe (41), then passes through the second refrigerant pipe (42), and enters the expansion valve (2); During winter heating, the low-temperature refrigerant discharged from the expansion valve (2) enters the refrigerant pipe assembly and only passes through the first refrigerant pipe (41) to enter the compressor (1).

2. The air conditioning refrigeration system of the supercooling pipe device according to claim 1, characterized in that: A three-way valve (43) is arranged at the connection between the first refrigerant pipe (41) and the second refrigerant pipe (42); the port a of the three-way valve (43) is connected to the first refrigerant pipe (41); the port b of the three-way valve (43) is connected to the first end of the second refrigerant pipe (42); and the port c of the three-way valve (43) is connected to the outlet of the expansion valve (2).

3. The air conditioning refrigeration system of the supercooling pipe device according to claim 2, characterized in that: The port c of the three-way valve (43) is provided with a valve for opening and closing.

4. The air conditioning refrigeration system of the supercooling pipe device according to claim 3, characterized in that: A first one-way valve (44) is arranged between the port C of the three-way valve (43) and the outlet of the expansion valve (2) so that the refrigerant can only flow from the outlet of the expansion valve (2) to the port C of the three-way valve (43).

5. The air conditioning refrigeration system of the supercooling pipe device according to claim 4, characterized in that: A second one-way valve (45) is arranged between the second end of the second refrigerant pipe (42) and the inlet of the expansion valve (2) so that the refrigerant can only flow from the second end of the second refrigerant pipe (42) to the inlet of the expansion valve (2).

6. The air conditioning refrigeration system of the subcooling pipe device according to claim 1, characterized in that: The pipe length of the second refrigerant pipe (42) is shorter than the pipe length of the first refrigerant pipe (41).

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