Piston type compressor unit with air supplementing and enthalpy increasing functions

Abstract

The utility model discloses a piston type compressor unit with air supply and enthalpy increase in the field of compressors, which comprises a main compressor air cylinder and an enthalpy increase compressor air cylinder, the exhaust end of the main compressor air cylinder is connected with an oil separator after being connected, the oil separator is connected with a condenser, the condenser is connected with a cooling tower through two pipelines, and the cooling tower is connected with the enthalpy increase compressor air cylinder. A cooling pump is installed on a pipeline connected between the condenser and the cooling tower, the condenser is further connected with a heat exchange assembly, and the heat exchange assembly is connected with the enthalpy increasing compressor air cylinder and the main compressor air cylinder. By arranging the enthalpy-increasing compressor cylinder, part of cooled refrigerants can be directly and rapidly compressed, the refrigeration effect of the compressor unit can be greatly improved, the energy efficiency ratio is higher, the main compressor cylinder and the enthalpy-increasing compressor cylinder are arranged in parallel, external connection is more convenient and rapid, and the enthalpy-increasing compressor unit is extremely practical.

Description

Technical Field

[0001] The utility model relates to the field of compressors, in particular to a piston compressor unit with air supplement and enthalpy increase function. Background Art

[0002] Compressors are widely used in the fields of air conditioning, refrigeration, heat pumps, etc. Refrigeration or heating systems may encounter the following situation: When the scroll compressor operates at low ambient temperature or high load conditions, the cooling capacity and heating capacity are often low, and the compression exhaust temperature is high. In the refrigeration and heating system that operates normally, the liquid refrigerant after the condenser is overcooled mostly flows directly to the terminal equipment, and the compression work is relatively large, resulting in a decrease in cooling capacity, and it is also inconvenient to increase the configuration. Therefore, those skilled in the art have provided a piston compressor unit with air replenishment and enthalpy increase to solve the problems raised in the above background technology. Utility Model Content

[0003] The utility model aims to provide a piston compressor unit with air supplement and enthalpy increase to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A piston compressor unit with air supplement and enthalpy increase, comprising a main compressor cylinder and an enthalpy increase compressor cylinder, the exhaust end of the main compressor cylinder is connected to an oil separator, the oil separator is connected to a condenser, the condenser is connected to a cooling tower through two pipelines, a cooling pump is installed on a pipeline connecting the condenser and the cooling tower, the condenser is also connected to a heat exchange component, the heat exchange component is connected to the enthalpy increase compressor cylinder and the main compressor cylinder;

[0006] A ball valve, a second filter, a stop solenoid valve, an expansion valve and an evaporator which are connected in sequence are also arranged between the air intake end of the main compressor cylinder and the heat exchange component.

[0007] As a further solution of the utility model: a water supply pipe connected to an external water source is also installed on the cooling tower, and the heat exchange component includes an ECO solenoid valve and a main liquid supply solenoid valve arranged in parallel, a filter 1 arranged on one side of the ECO solenoid valve, and a heat exchange subcooler arranged on the filter 1 and on one side of the ECO solenoid valve.

[0008] As a further solution of the utility model: the heat exchange subcooler is connected to the ECO solenoid valve through a pipeline, and the heat exchange subcooler is connected to the main liquid supply solenoid valve and the filter one through a pipeline.

[0009] As a further solution of the utility model: the subcooled liquid supply temperature of the heat exchange subcooler is 10-45°C.

[0010] As a further solution of the utility model: the condensing mode of the condenser includes two modes: evaporative cooling and air cooling.

[0011] As a further solution of the utility model: the main compressor cylinder and the enthalpy increasing compressor cylinder have one or more cylinders, and are connected in parallel with each other.

[0012] As a further solution of the utility model: the ball valve, the second filter, the cut-off solenoid valve, the expansion valve and the evaporator are connected through pipelines.

[0013] As a further solution of the utility model: a flash evaporator assembly is connected to the condenser, and the flash evaporator assembly is connected to the enthalpy increase compressor cylinder and the main compressor cylinder.

[0014] As a further solution of the utility model: the flash evaporator assembly includes a throttling liquid supply valve, a float liquid level control valve and an ECO supercooler, the throttling liquid supply valve is connected to the float liquid level control valve through a pipeline, the float liquid level control valve is placed inside the ECO supercooler, and the ECO supercooler is connected to the ball valve and the enthalpy increase compressor cylinder through a pipeline to form a parallel pipeline.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can directly and quickly compress part of the cooled refrigerant by setting the enthalpy increasing compressor cylinder, which can greatly improve the refrigeration effect of the compressor unit and has a higher energy efficiency ratio. In addition, the main compressor cylinder and the enthalpy increasing compressor cylinder are arranged in parallel, which is more convenient and quick to connect externally and is extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a connection diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 It is a partial enlarged view of the heat exchange component in Example 1 of the utility model;

[0019] Figure 3 This is a connection diagram of Embodiment 2 of the present utility model;

[0020] Figure 4 It is a partial enlarged view of the flash evaporator component part in Example 2 of the present utility model.

[0021] In the figure: 1. Main compressor cylinder; 2. Enthalpy increase compressor cylinder; 3. Oil separator; 4. Condenser; 5. Cooling pump; 6. Cooling tower; 7. Heat exchange assembly; 701. Filter 1; 702. ECO solenoid valve; 703. Main liquid supply solenoid valve; 704. Heat exchange subcooler; 8. Ball valve; 9. Filter 2; 10. Stop solenoid valve; 11. Expansion valve; 12. Evaporator; 13. Flash evaporator assembly; 1301. Throttling liquid supply valve; 1302. Float liquid level control valve; 1303. ECO subcooler. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] See also Figures 1-2 In the embodiment of the utility model, a piston compressor unit with air supplement and enthalpy increase includes a main compressor cylinder 1 and an enthalpy increase compressor cylinder 2. The exhaust end of the main compressor cylinder 1 is connected to an oil separator 3, and the oil separator 3 is connected to a condenser 4. The condenser 4 is connected to a cooling tower 6 through two pipelines. A cooling pump 5 is installed on a pipeline connecting the condenser 4 and the cooling tower 6. The condenser 4 is also connected to a heat exchange component 7, and the heat exchange component 7 is connected to the enthalpy increase compressor cylinder 2 and the main compressor cylinder 1; the cooling pump 5 is restarted after the cooling tower 6 is turned on for 5 seconds.

[0025] A ball valve 8, a second filter 9, a stop solenoid valve 10, an expansion valve 11 and an evaporator 12 are also provided between the suction end of the main compressor cylinder 1 and the heat exchange assembly 7, which are connected in sequence.

[0026] Among them, the cooling tower 6 is also equipped with a water supply pipe connected to an external water source, and the heat exchange component 7 includes an ECO solenoid valve 702 and a main liquid supply solenoid valve 703 arranged in parallel, a filter 701 arranged on one side of the ECO solenoid valve 702, and a heat exchange subcooler 704 arranged on the filter 701 and one side of the ECO solenoid valve 702.

[0027] The heat exchange subcooler 704 is connected to the ECO solenoid valve 702 through a pipeline, and the heat exchange subcooler 704 is connected to the main liquid supply solenoid valve 703 and the filter 1 701 through a pipeline.

[0028] The subcooled liquid supply temperature of the heat exchange subcooler 704 is 10-45°C.

[0029] The condensing mode of the condenser 4 includes two modes: evaporative cooling and air cooling.

[0030] There are one or more main compressor cylinders 1 and enthalpy increasing compressor cylinders 2, which are connected in parallel with each other.

[0031] Among them, the ball valve 8, the second filter 9, the stop solenoid valve 10, the expansion valve 11 and the evaporator 12 are connected through pipelines, and the second filter 9 can filter the refrigerant.

[0032] Example 2

[0033] like Figure 3-4 As shown, in the embodiment of the utility model, the heat exchange assembly 7 is replaced by a flash evaporator assembly 13, the condenser 4 is connected to the flash evaporator assembly 13, and the flash evaporator assembly 13 is connected to the enthalpy increase compressor cylinder 2 and the main compressor cylinder 1.

[0034] Among them, the flash evaporator component 13 includes a throttling liquid supply valve 1301, a float liquid level control valve 1302 and an ECO supercooler 1303. The throttling liquid supply valve 1301 is connected to the float liquid level control valve 1302 through a pipeline. The float liquid level control valve 1302 is placed inside the ECO supercooler 1303. The ECO supercooler 1303 is connected to the ball valve 8 and the enthalpy increase compressor cylinder 2 through a pipeline to form a parallel pipeline.

[0035] The working principle of the utility model is as follows: when the compressor unit is working, the main compressor cylinder 1 and the heat-increasing compressor cylinder 2 compress the refrigerant gas cooled by the heat exchange component 7 or the flash evaporator component 13, compress it into a high-temperature and high-pressure refrigerant gas, enter the oil separator 3 to realize oil-gas separation, and the separated refrigerant gas enters the condenser 4 for condensation to become a liquid refrigerant, and then enters the cooling tower 6 to be cooled into a liquid refrigerant, and after being dried by the drying filter, continues to enter the heat exchange component 7 or the flash evaporator component 13 to be further cooled, and then enters the evaporator 12 for evaporation and refrigeration, and after evaporation and heat absorption, returns to the main compressor cylinder 1 and enters the compression-condensation-throttling-evaporation refrigeration cycle again; by setting the heat-increasing compressor cylinder 2, part of the cooled refrigerant can be directly and quickly compressed, which can greatly improve the refrigeration effect of the compressor unit, and the energy efficiency ratio is higher, and the main compressor cylinder 1 and the heat-increasing compressor cylinder 2 are arranged in parallel, which is more convenient and quick to connect externally, and is extremely practical.

[0036] Through experiments, the comparative calculation table of cooling capacity / energy efficiency between the enthalpy increase system and the single-stage system is as follows:

[0037] (6 units) Single-stage refrigeration system

[0038]

[0039] (5 units + 1 enthalpy increase) refrigeration system

[0040]

[0041] The cooling capacity transferred by a heat-increasing unit through a heat exchanger

[0042] (According to the law of conservation of energy, the transferred cooling capacity must be equal to the increased cooling capacity. The heat transfer temperature difference of the enthalpy-increasing heat exchanger = -1°C - 7.9°C = 6.9°C)

[0043]

[0044] It can be clearly seen from the above table that the refrigeration capacity of the enthalpy-increasing compressor cylinder 2 of the present application is greater.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piston compressor unit with air supplement and enthalpy increase, comprising a main compressor cylinder (1) and an enthalpy increase compressor cylinder (2), characterized in that: The exhaust end of the main compressor cylinder (1) is connected to an oil separator (3), the oil separator (3) is connected to a condenser (4), the condenser (4) is connected to a cooling tower (6) via two pipelines, a cooling pump (5) is installed on a pipeline connecting the condenser (4) and the cooling tower (6), the condenser (4) is also connected to a heat exchange component (7), and the heat exchange component (7) is connected to the enthalpy increasing compressor cylinder (2) and the main compressor cylinder (1); A ball valve (8), a second filter (9), a stop solenoid valve (10), an expansion valve (11) and an evaporator (12) which are connected in sequence are also provided between the air intake end of the main compressor cylinder (1) and the heat exchange component (7).

2. The piston compressor unit with air supplement and enthalpy increase according to claim 1, characterized in that: The cooling tower (6) is also provided with a water supply pipe connected to an external water source. The heat exchange component (7) comprises an ECO solenoid valve (702) and a main liquid supply solenoid valve (703) arranged in parallel, a filter 1 (701) arranged on one side of the ECO solenoid valve (702), and a heat exchange subcooler (704) arranged on one side of the filter 1 (701) and the ECO solenoid valve (702).

3. The piston compressor unit with air supplement and enthalpy increase according to claim 2, characterized in that: The heat exchange subcooler (704) is connected to the ECO solenoid valve (702) via a pipeline, and the heat exchange subcooler (704) is connected to the main liquid supply solenoid valve (703) and the filter 1 (701) via a pipeline.

4. The piston compressor unit with air supplement and enthalpy increase according to claim 2, characterized in that: The subcooled liquid supply temperature of the heat exchange subcooler (704) is 10-45°C.

5. The piston compressor unit with air supplement and enthalpy increase according to claim 1, characterized in that: The condensation mode of the condenser (4) includes two modes: evaporative cooling and air cooling.

6. The piston compressor unit with air supplement and enthalpy increase according to claim 1, characterized in that: The main compressor cylinder (1) and the enthalpy increasing compressor cylinder (2) are provided in one or more portions and are connected in parallel with each other.

7. The piston compressor unit with air supplement and enthalpy increase according to claim 1, characterized in that: The ball valve (8), the second filter (9), the stop solenoid valve (10), the expansion valve (11) and the evaporator (12) are connected via pipelines.

8. The piston compressor unit with air supplement and enthalpy increase according to claim 1, characterized in that: The condenser (4) is connected to a flash evaporator assembly (13), and the flash evaporator assembly (13) is connected to the enthalpy-increasing compressor cylinder (2) and the main compressor cylinder (1).

9. The piston compressor unit with air supplement and enthalpy increase according to claim 8, characterized in that: The flash evaporator assembly (13) comprises a throttling liquid supply valve (1301), a float liquid level control valve (1302) and an ECO supercooler (1303); the throttling liquid supply valve (1301) is connected to the float liquid level control valve (1302) via a pipeline; the float liquid level control valve (1302) is placed inside the ECO supercooler (1303); the ECO supercooler (1303) is connected to the ball valve (8) and the enthalpy increasing compressor cylinder (2) via a pipeline to form a parallel pipeline.

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