Supercooling type single-stage and double-stage free switching compressor

Abstract

The utility model discloses a supercooling type single-stage and double-stage free switching compressor, which relates to the technical field of compressors, and comprises a compressor body, the compressor body is connected with a supercooler, the supercooler is connected with a condenser, the condenser is connected with an exhaust manifold, one end of the exhaust manifold far away from the condenser is provided with an oil separator, and the oil separator is connected with the condenser. A low-pressure-stage piston is arranged in the compressor body, and a high-pressure-stage piston is arranged in the compressor body. Through the arrangement of the electromagnetic valve and the check valve, the operation states of the low-pressure-stage piston and the high-pressure-stage piston are adjusted through opening and closing of the electromagnetic valve and the check valve, then single-stage and double-stage adjustment is achieved, and management of the compressor is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a supercooling single-stage or two-stage free-switching compressor. Background Art

[0002] The refrigeration compressor is the core and heart of the refrigeration system. The capacity and characteristics of the compressor determine the capacity and characteristics of the refrigeration system. In a sense, the design and matching of the refrigeration system is to reflect the capacity of the compressor. Therefore, the refrigeration industry in all countries of the world has invested a lot of energy in the research of refrigeration compressors, and new research directions and research results continue to emerge. The technology and performance level of compressors are changing with each passing day. There are many types of compressors. According to different working principles, refrigeration compressors can be divided into fixed displacement compressors and variable displacement compressors.

[0003] The existing compressors are only single-stage and cannot be switched between single and double stages, which makes it difficult to effectively regulate and manage the compressors. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a subcooling single-stage and two-stage free-switching compressor. By setting the solenoid valve and the check valve, the opening and closing of the solenoid valve and the check valve can adjust the operating state of the low-pressure stage piston and the high-pressure stage piston, thereby realizing single-stage and double-stage adjustment, facilitating the management of the compressor, and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subcooled single-stage and two-stage free-switching compressor, comprising a compressor body, the compressor body is connected to a subcooler, the subcooler is connected to a condenser, the condenser is connected to an exhaust main pipe, an oil separator is provided at one end of the exhaust main pipe away from the condenser, a low-pressure stage piston is provided in the compressor body, a high-pressure stage piston is provided in the compressor body, check valves are provided between the suction pipes of the low-pressure stage piston and the high-pressure stage piston and between the exhaust pipes, and a solenoid valve is provided between the exhaust pipe of the high-pressure stage piston and the suction pipe of the low-pressure stage piston.

[0006] Furthermore, an evaporator is provided at the air inlet pipe end of the low-pressure stage piston, a cooling tower is connected to the discharge end of the condenser, and a cooling pump is provided on the pipeline between the cooling tower and the condenser.

[0007] Furthermore, the feed end of the subcooler is provided with two branch pipes, one of which is provided with a filter and a solenoid valve, and the other is provided with a main liquid supply solenoid valve.

[0008] Furthermore, an oil outlet is provided at the lower portion of the oil separator, and the oil outlet is connected to the compressor body through a pipeline.

[0009] Furthermore, the cooling pump is connected to the condenser via a pipeline, and the cooling pump is connected to the pipeline via a flange.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model sets a solenoid valve and a check valve, so that the opening and closing of the solenoid valve and the check valve can adjust the operating state of the low-pressure stage piston and the high-pressure stage piston, thereby realizing single-stage and double-stage adjustment, which is convenient for the management of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the refrigeration principle of Example 1 of the utility model;

[0013] Figure 2 This is a schematic diagram of the refrigeration principle of Example 2 of the present utility model.

[0014] In the figure: 1. Condenser; 2. Oil separator; 3. Cooling pump; 4. Cooling tower; 5. Subcooler; 6. Compressor body; 7. Evaporator; 8. Exhaust main pipe; 9. Low-pressure stage piston; 10. High-pressure stage piston; 11. Check valve; 12. Solenoid valve. DETAILED DESCRIPTION

[0015] 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. Based on the embodiments in 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.

[0016] Example 1

[0017] See also Figure 1 The present embodiment provides a technical solution: a subcooling single-stage and two-stage free-switching compressor, comprising a compressor body 6, the compressor body 6 is connected to a subcooler 5, the subcooler 5 is connected to a condenser 1, the condenser 1 is connected to an exhaust main pipe 8, an oil separator 2 is provided at one end of the exhaust main pipe 8 away from the condenser 1, a low-pressure stage piston 9 is provided in the compressor body 6, a high-pressure stage piston 10 is provided in the compressor body 6, a check valve 11 is provided between the suction pipe of the low-pressure stage piston 9 and the high-pressure stage piston 10 and between the exhaust pipes, and a solenoid valve 12 is provided between the exhaust pipe of the high-pressure stage piston 10 and the suction pipe of the low-pressure stage piston 9.

[0018] An evaporator 7 is provided at the air inlet pipe end of the low-pressure stage piston 9, and a ball valve, a filter, a solenoid valve and an expansion valve are provided at the feed end of the evaporator 7 respectively. A cooling tower 4 is connected to the discharge end of the condenser 1, and a cooling pump 3 is provided on the pipeline between the cooling tower 4 and the condenser 1.

[0019] The feed end of the subcooler 5 is provided with two branch pipes, one of which is provided with a filter, a solenoid valve and an expansion valve, and the other is provided with a main liquid supply solenoid valve. An oil outlet is provided at the lower part of the oil separator 2, and the oil outlet is connected to the compressor body 6 through a pipeline. The cooling pump 3 is connected to the condenser 1 through a pipeline, and the cooling pump 3 is connected to the pipeline through a flange.

[0020] Example 2

[0021] The present embodiment provides a technical solution: a subcooled single-stage and two-stage free-switching compressor, comprising a compressor body 6, the compressor body 6 is connected to a subcooler 5, the liquid level in the subcooler 5 is controlled by a float, and at the same time, a throttle valve or an orifice plate is connected to the feed end outside the subcooler 5, the subcooler 5 is connected to a condenser 1, the condenser 1 is connected to an exhaust main pipe 8, an oil separator 2 is provided at one end of the exhaust main pipe 8 away from the condenser 1, a low-pressure stage piston 9 is provided in the compressor body 6, a high-pressure stage piston 10 is provided in the compressor body 6, check valves 11 are provided between the suction pipes of the low-pressure stage piston 9 and the high-pressure stage piston 10 and between the exhaust pipes, and a solenoid valve 12 is provided between the exhaust pipe of the high-pressure stage piston 10 and the suction pipe of the low-pressure stage piston 9.

[0022] An evaporator 7 is provided at the air inlet pipe end of the low-pressure stage piston 9, and a ball valve, a filter, a solenoid valve and an expansion valve are provided at the feed end of the evaporator 7 respectively. A cooling tower 4 is connected to the discharge end of the condenser 1, and a cooling pump 3 is provided on the pipeline between the cooling tower 4 and the condenser 1.

[0023] An oil outlet is provided at the lower part of the oil separator 2, and the oil outlet is connected to the compressor body 6 through a pipeline. The cooling pump 3 is connected to the condenser 1 through a pipeline, and the cooling pump 3 is connected to the pipeline through a flange.

[0024] The working principle of the supercooling single-stage and two-stage free switching compressor provided by the utility model is as follows: Figure 1-Figure 2As shown, the refrigerant in the evaporator 7 evaporates and absorbs heat, and then the items that need to be stored in a frozen state can be subjected to heat absorption and cooling treatment. The refrigerant after absorbing heat enters the compressor 6 for pressurization. The pressurized refrigerant is separated by the oil separator 2 and then enters the condenser 1. The low-temperature cooling water flowing in the cooling tower 4 enters the condenser 1 to condense the gaseous refrigerant. The condensed refrigerant enters the supercooler 5 for supercooling treatment, and finally flows back to the evaporator 7 for circulating refrigeration. The check valve 11 and the solenoid valve 12 arranged on the suction pipe and the exhaust pipe of the low-pressure stage piston 9 and the high-pressure stage piston 10 can be opened and closed, so that the low-pressure stage piston 9 and the high-pressure stage piston 10 can be switched and adjusted when needed to meet the needs of management and use.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A subcooling single-stage two-stage free-switching compressor, comprising a compressor body (6), characterized in that: The compressor body (6) is connected to a subcooler (5), the subcooler (5) is connected to a condenser (1), the condenser (1) is connected to an exhaust manifold (8), an oil separator (2) is provided at one end of the exhaust manifold (8) away from the condenser (1), a low-pressure stage piston (9) is provided in the compressor body (6), a high-pressure stage piston (10) is provided in the compressor body (6), check valves (11) are provided between the intake pipes of the low-pressure stage piston (9) and the high-pressure stage piston (10) and between the exhaust pipes, and a solenoid valve (12) is provided between the exhaust pipe of the high-pressure stage piston (10) and the intake pipe of the low-pressure stage piston (9).

2. The subcooling single-stage and two-stage free-switching compressor according to claim 1, characterized in that: An evaporator (7) is provided at the air inlet pipe end of the low-pressure stage piston (9), a cooling tower (4) is connected to the discharge end of the condenser (1), and a cooling pump (3) is provided on the pipeline between the cooling tower (4) and the condenser (1).

3. The subcooling type single-stage and two-stage free-switching compressor according to claim 1, characterized in that: The feed end of the subcooler (5) is provided with two branch pipes, one of which is provided with a filter and a solenoid valve, and the other is provided with a main liquid supply solenoid valve.

4. The subcooling type single-stage and two-stage free-switching compressor according to claim 1, characterized in that: The lower part of the oil separator (2) is provided with an oil outlet, and the oil outlet is connected to the compressor body (6) through a pipeline.

5. The subcooling type single-stage and two-stage free-switching compressor according to claim 2, characterized in that: The cooling pump (3) is connected to the condenser (1) via a pipeline, and the cooling pump (3) is connected to the pipeline via a flange.

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