Bidirectional swash plate piston type active displacement control compressor

Abstract

The utility model discloses a bidirectional swash plate piston type active displacement control compressor, and belongs to the field of compressors. Comprising a cylinder body; a front cylinder cover; a rear cylinder cover; a swash plate; the cylinder has a piston cavity; the cylinder body is provided with an air suction pipe and an exhaust pipe, the air suction pipe is communicated with the swash plate cavity, the swash plate cavity is communicated with the piston cavity, and the piston cavity is communicated with the exhaust pipe; the air suction pipe is communicated with the exhaust pipe through a connecting pipeline; the bidirectional swash plate piston type active control displacement compressor further comprises a transistor which is arranged on the cylinder body; the temperature sensor is arranged on an evaporator of the air conditioner, electrically connected with the transistor and used for detecting the temperature of the evaporator and outputting the output current analog quantity to the transistor. The transistor is used for receiving the current analog quantity with different intensities sent by the temperature sensor, and the transistor outputs strong current with different intensities; the control valve is installed in the connecting channel and electrically connected with the transistor. The bi-directional swash plate piston type active control displacement compressor has the beneficial effect that the bi-directional swash plate piston type active control displacement compressor which saves energy is provided.

Description

Technical Field

[0001] The present application relates to the field of compressors, and in particular to a bidirectional swash plate piston type actively controlled displacement compressor. Background Art

[0002] The existing variable displacement compressor is a one-way swash plate air conditioning compressor. It changes the stroke of the piston by changing the angle of the swash plate, so that the displacement of the compressor changes per revolution, achieving the purpose of variable displacement. The output of the compressor displacement is controlled according to the needs of the refrigeration environment. The compressor power consumption is small when the compressor displacement is small, that is, the volume ratio is low, and the compressor power consumption is large when the compressor displacement is large, that is, the volume ratio is high, so the compressor power consumption is large, and the power output is on demand, achieving energy saving. However, the internal structure of this compressor is complex, the processing cost is high, the material mechanical properties are high, and a special control valve body needs to be added, so the cost of the compressor assembly is difficult to reduce.

[0003] The existing bidirectional swash plate compressor operates at full load. When the environment reaches the set temperature, the compressor is powered off and stops running. After stopping, the high-pressure refrigerant gas in the system will flow back into the compressor. When the temperature rises and the air-conditioning compressor needs to be restarted, the refrigerant gas needs to be compressed and discharged into the system again. Therefore, energy loss is caused between stopping and starting (that is, repeated compression of the gas process), and there is no energy saving of variable displacement compressor. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a bidirectional swash plate piston type actively controlled displacement compressor, including:

[0006] Cylinder body;

[0007] A front cylinder head, arranged on the cylinder body;

[0008] A rear cylinder head, arranged on the cylinder body;

[0009] A transmission shaft is rotatably disposed in the cylinder body;

[0010] A swash plate is disposed in the swash plate cavity of the cylinder body and is fixedly connected to the transmission shaft;

[0011] The cylinder is rotatably arranged in the cylinder body, and the cylinder has a piston chamber;

[0012] An air intake pipe and an air exhaust pipe are provided on the top of the cylinder body, one end of the air intake pipe is connected to the swash plate cavity, the swash plate cavity is connected to the piston cavity, and the piston cavity is connected to the exhaust pipe;

[0013] The air intake pipe and the air exhaust pipe are connected via a connecting pipe;

[0014] The bi-directional swash plate piston type actively controlled displacement compressor also includes:

[0015] A transistor, mounted on the cylinder body;

[0016] The temperature sensor is arranged on the evaporator of the air conditioner and is electrically connected to the transistor, and is used to detect the temperature of the evaporator and output the output current analog quantity to the transistor; the transistor is used to receive the current analog quantity of different strengths sent by the temperature sensor, and the transistor outputs strong currents of different sizes;

[0017] The control valve is installed in the connecting channel and is electrically connected to the transistor. The control valve is controlled by the transistor to control the flow in the connecting channel.

[0018] Furthermore, the transistor adopts a bipolar thyristor.

[0019] Furthermore, a plurality of high-pressure channels and low-pressure channels are respectively provided on the front cylinder head and the rear cylinder head. The swash plate cavity is connected with the piston cavity through the low-pressure channel, and the high-pressure channel is connected with the piston cavity.

[0020] Furthermore, a collecting channel is provided on the cylinder body, the end of the collecting channel is communicated with each high-pressure channel, and one end of the collecting channel is also communicated with the exhaust pipe.

[0021] Furthermore, one-way valves are installed on both the intake pipe and the exhaust pipe.

[0022] Furthermore, the air intake pipe and the air exhaust pipe are arranged in parallel.

[0023] Furthermore, both the air intake pipe and the air exhaust pipe have an air intake port and an air exhaust port.

[0024] Furthermore, a hemisphere is provided on the swash plate, and the hemisphere is movably connected to the pistons in each group of cylinders.

[0025] The beneficial effects of the present application are: when the evaporator temperature is lower, the temperature sensor outputs the output current analog quantity to the transistor, the transistor receives the current analog quantity of different strengths, outputs strong currents of different sizes, and controls the opening of the switch of the control valve to be larger, so that the high-pressure gas in the exhaust pipe passes directly into the suction pipe through the connecting channel (that is, the gas at the compressor exhaust port enters the suction port), so that the high and low pressure difference of the compressor becomes smaller (equivalent to the low volumetric rate of the compressor), so that the compressor operates at low load; when the evaporator temperature is higher, the opening of the control valve is smaller or even closed, and the compressor operates at full load at this time. A one-way valve is installed on both the suction pipe and the exhaust pipe to prevent the high-pressure gas at the suction port of the compressor from flowing back to the evaporator; or the high-pressure gas of the condenser from flowing back to the compressor, causing energy loss.

[0026] When the environment reaches the set temperature, part of the refrigerant from the compressor's exhaust pipe is discharged into the compressor's suction pipe, reducing the amount of refrigerant entering the system while reducing the high and low pressure differential of the compressor, achieving a small displacement output of the air-conditioning compressor to reduce the power consumption of the entire machine. When the ambient set temperature rises, the amount of refrigerant discharged from the compressor's exhaust pipe into the compressor's suction pipe is reduced until it is completely closed, increasing the amount of refrigerant entering the system while increasing the high and low pressure differential of the compressor, achieving a large displacement output of the air-conditioning compressor, i.e. full load operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0028] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0029] In the attached picture:

[0030] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0031] Figure 2 is a cross-sectional view of the embodiment.

[0032] Reference numerals:

[0033] 1. Cylinder block; 2. Front cylinder head; 3. Rear cylinder head; 4. Clutch; 5. Drive shaft; 6. Swash plate; 7. Swash plate cavity; 8. Cylinder; 9. Hemisphere; 10. Piston; 11. Piston cavity; 12. Intake pipe; 13. Exhaust pipe; 14. Intake port; 15. Exhaust port; 16. High-pressure channel; 17. Low-pressure channel; 18. Collecting channel; 19. Temperature sensor; 20. Control valve; 21. Connecting channel. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0035] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0036] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0037] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0038] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] Reference Figure 1-2 The bidirectional swash plate piston type active control displacement compressor includes a cylinder body, a front cylinder head, a rear cylinder head, a clutch, a transmission shaft, and a swash plate; the front cylinder head and the rear cylinder head are fixedly arranged on the two ends of the cylinder body respectively, the clutch is installed on the front cylinder head, and the transmission shaft and the swash plate are respectively arranged on the axis position of the cylinder body. A swash plate cavity and a plurality of cylinder groups are arranged in the cylinder body, the swash plate is installed in the swash plate cavity and is fixedly connected to the transmission shaft, a hemisphere is arranged on the swash plate, and the hemisphere is movably connected to the piston in each group of cylinders, and the piston is located in the piston cavity of the cylinder. The above structure is similar to the swash plate type automobile air conditioning compressor in the prior art, so it will not be described in detail.

[0040] An intake pipe and an exhaust pipe are provided on the top of the cylinder body, and both the intake pipe and the exhaust pipe have an intake port and an exhaust port; the intake pipe is connected to the swash plate cavity. The front cylinder head and the rear cylinder head are respectively provided with a number of high-pressure channels and low-pressure channels, the swash plate cavity is connected to the piston cavity through the low-pressure channel, and the high-pressure channel is connected to the piston cavity. A collecting channel is provided on the cylinder body, and the end of the collecting channel is connected to each high-pressure channel, and one end of the collecting channel is also connected to the exhaust pipe. When in use, the intake pipe is connected to the evaporator outlet pipe in the automobile air-conditioning system (such as the attached Figure 1 The arrow in the middle points to the direction of gas flow. When the compressor is running, the low-pressure refrigerant gas first enters the swash plate cavity through the suction pipe. Under the high-speed swing of the swash plate, the low-pressure gas rushes to the surface of each part in the swash plate cavity to lubricate and cool each friction pair, and then enters the piston cavity through the low-pressure channel. Through the reciprocating motion of the pistons in each group of cylinders, the low-pressure gas is converted into high-pressure gas and discharged into the high-pressure channel, and then discharged through the exhaust pipe. Among them, after being compressed by the piston, the gas is discharged from the valve plate exhaust hole in the cylinder body through the exhaust valve plate into the high-pressure channel.

[0041] The intake pipe and the exhaust pipe are arranged in parallel.

[0042] The bidirectional swash plate piston type actively controlled displacement compressor also includes a temperature sensor, a control valve, and a transistor (not shown in the figure). The temperature sensor is installed on the evaporator of the air conditioner and is located between the intake pipe and the exhaust pipe. The intake pipe and the exhaust pipe are connected through a connecting channel. The control valve is installed in the connecting channel, and the transistor is installed on the cylinder body. The temperature sensor can be connected to a transistor (transistors include but are not limited to triodes or bipolar thyristors), and the transistor (transistors include but are not limited to triodes or bipolar thyristors) is electrically connected to the control valve. Specifically, the temperature sensor outputs a current analog quantity to the triode. The triode receives current analog quantities of different intensities and outputs strong currents of different sizes to control the switch size of the control valve and change the opening size of the connecting channel. The same is true for bipolar thyristors, and they have the function of changing the direction of current flow. When the evaporator temperature is lower, the temperature sensor will output the output current analog quantity to the transistor. The transistor receives the current analog quantity of different strengths and outputs strong current of different sizes. The larger the opening of the control valve switch, the higher the pressure difference of the compressor (equivalent to the low volumetric rate of the compressor) will be. The higher the evaporator temperature, the smaller the opening of the control valve or even the closed valve. The compressor will run at full load. Check valves are installed on both the suction and exhaust pipes to prevent the high-pressure gas at the suction port of the compressor from flowing back to the evaporator; or the high-pressure gas in the condenser from flowing back to the compressor, causing energy loss.

[0043] When the environment reaches the set temperature, part of the refrigerant from the compressor's exhaust pipe is discharged into the compressor's suction pipe, reducing the amount of refrigerant entering the system while reducing the high and low pressure differential of the compressor, achieving a small displacement output of the air-conditioning compressor to reduce the power consumption of the entire machine. When the ambient set temperature rises, the amount of refrigerant discharged from the compressor's exhaust pipe into the compressor's suction pipe is reduced until it is completely closed, increasing the amount of refrigerant entering the system while increasing the high and low pressure differential of the compressor, achieving a large displacement output of the air-conditioning compressor, i.e. full load operation.

[0044] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A bidirectional swash plate piston type actively controlled displacement compressor, comprising: Cylinder body; A front cylinder cover, disposed on the cylinder body; A rear cylinder cover, disposed on the cylinder body; A transmission shaft is rotatably disposed in the cylinder body; A swash plate, disposed in the swash plate cavity of the cylinder body and fixedly connected to the transmission shaft; A cylinder is rotatably disposed in the cylinder body, and the cylinder has a piston chamber; Features: The top of the cylinder body is provided with an air intake pipe and an air exhaust pipe, one end of the air intake pipe is communicated with the swash plate cavity, the swash plate cavity is communicated with the piston cavity, and the piston cavity is communicated with the exhaust pipe; The air intake pipe and the air exhaust pipe are connected via a connecting channel; The bidirectional swash plate piston type actively controlled displacement compressor further comprises: A transistor, mounted on the cylinder body; The temperature sensor is arranged on the evaporator of the air conditioner and is electrically connected to the transistor, and is used to detect the temperature of the evaporator and output an analog current to the transistor; the transistor is used to receive analog currents of different strengths sent by the temperature sensor, and the transistor outputs strong currents of different sizes; A control valve is installed in the connecting channel and is electrically connected to the transistor. The control valve is controlled by the transistor to control the flow in the connecting channel.

2. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: The transistor is a bipolar thyristor.

3. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: The front cylinder cover and the rear cylinder cover are respectively provided with a plurality of high-pressure channels and low-pressure channels. The swash plate cavity is connected with the piston cavity through the low-pressure channel, and the high-pressure channel is connected with the piston cavity.

4. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 3, characterized in that: The cylinder body is provided with a collecting channel, the end of the collecting channel is communicated with each of the high-pressure channels, and one end of the collecting channel is also communicated with the exhaust pipe.

5. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: Both the air intake pipe and the air discharge pipe are provided with a one-way valve.

6. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: The air intake pipe and the air exhaust pipe are arranged in parallel.

7. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: The air intake pipe and the air exhaust pipe are both provided with an air intake port and an air exhaust port.

8. The bidirectional swash plate piston type actively controlled displacement compressor according to claim 1, characterized in that: The swash plate is provided with a hemisphere, which is movably connected with the pistons in each group of cylinders.

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