Compressor and method for controlling the same

Abstract

A compressor comprises: a shell in which a compression chamber is arranged; an injection pipeline installed in the shell for injecting fluid into the compression chamber; and a solenoid valve installed on the injection pipeline in the shell for controlling the on-off of the fluid in the injection pipeline.

Description

Technical Field

[0001] The present invention relates to a compressor and a method for controlling the compressor, and more particularly, to a compressor having an injection pipeline and a method for controlling the opening and / or closing of the injection pipeline in the compressor. Background Art

[0002] In order to improve the performance of the compressor, a refrigerant injection pipe assembly is often provided in the compressor. When the compressor stops working, the injection pipe needs to be closed at the same time, otherwise the refrigerant will flow into the compression chamber of the compressor, causing damage to the compression components of the compressor. In the prior art, an electronic expansion valve is often used to close the injection pipe. However, when the system where the compressor is located is suddenly powered off, the electronic expansion valve often cannot be closed. In this case, the refrigerant will still flow into the compression chamber, resulting in a decrease in the reliability performance of the compressor.

[0003] In addition, in some cases, the injection line also needs to be closed when the compressor is running. For example, when the compressor is used for heating purposes, the injection line needs to spray refrigerant. However, when the compressor is used for refrigeration purposes, sometimes in order to simplify the system settings, the injection line is not needed to spray refrigerant. At this time, the injection line needs to be closed. For another example, in order to reduce reliability risks, the injection line also needs to be closed when the compressor is running at high load. However, since the electronic expansion valve in the prior art is usually arranged outside the compressor, when the injection line is shut off by the electronic expansion valve, it often results in a large amount of refrigerant remaining in the injection line, that is, there is a large dead volume, which also reduces the performance of the compressor. Summary of the invention

[0004] The present invention aims to solve one or more of the above problems. According to an embodiment of the present invention, a compressor and a method for controlling the compressor are provided.

[0005] According to one aspect of the present invention, a compressor is provided, comprising: a shell in which a compression chamber is arranged; an injection pipeline installed in the shell and used to spray fluid into the compression chamber; and a solenoid valve installed on the injection pipeline in the shell and used to control the on-off of the fluid in the injection pipeline.

[0006] According to one aspect of the invention, the solenoid valve is positioned proximate to the inlet of the compression chamber.

[0007] According to one aspect of the present invention, the compressor further comprises: a first circuit for connecting the solenoid valve to a power supply of the compressor so that the solenoid valve is turned on and / or off together with the compressor.

[0008] According to one aspect of the present invention, the compressor further comprises: a system controller for monitoring and controlling the operation of the compressor; and a second circuit for connecting the solenoid valve to the system controller so that the solenoid valve can be opened or closed by the system controller when the compressor is running.

[0009] According to one aspect of the present invention, the compressor further comprises: a containing box installed on the housing and used to contain at least one of the power supply and the system controller.

[0010] According to one aspect of the present invention, the compressor further comprises: a first terminal disposed in the receiving box for connecting the first circuit to the power source; and a second terminal disposed in the receiving box for connecting the second circuit to the system controller.

[0011] According to one aspect of the invention, the compressor is a scroll compressor and the fluid is a refrigerant.

[0012] According to another aspect of the present invention, a method for controlling the above-mentioned compressor is provided, comprising: connecting a solenoid valve to a power supply of the compressor so that the solenoid valve is opened when the compressor is turned on and is closed when the compressor is turned off, so as to control the on and off of the fluid in the injection pipeline.

[0013] According to another aspect of the present invention, the compressor also includes a system controller for monitoring and controlling the operation of the compressor, and the method also includes: connecting the solenoid valve to the system controller so that when the compressor is running, the solenoid valve is turned off and / or opened by the system controller to control the on and off of the fluid in the injection pipeline.

[0014] According to another aspect of the present invention, the step of turning off and / or turning on the solenoid valve by the system controller comprises: sending a switch signal by the system controller to control the turning on and / or turning off of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of a compressor according to an embodiment of the present invention;

[0016] Figure 2 is a perspective view of a compressor according to an embodiment of the present invention with a portion of the housing removed; and

[0017] Figure 3 yes Figure 2 A top view of the compressor containment box with the top cover removed. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0019] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0020] Figure 1 is a cross-sectional view of a compressor 100 according to an embodiment of the present invention; Figure 2 is a perspective view of a compressor 100 according to an embodiment of the present invention with a portion of the housing 10 removed; and Figure 3 yes Figure 2 FIG. 1 is a top view of the container of the compressor 100 with the top cover removed.

[0021] See also Figure 1 According to one embodiment of the present invention, a compressor 100 is provided, comprising: a housing 10, in which a compression chamber 20 is arranged; an injection pipeline 30, installed in the housing 10, for injecting fluid into the compression chamber 20; and a solenoid valve 40, installed on the injection pipeline 30 in the housing, for controlling the on-off of the fluid in the injection pipeline 30. That is, the solenoid valve 40 can control the injection pipeline 30 to start injecting fluid and / or stop injecting fluid as the compressor 100 is turned on and / or off.

[0022] Therefore, the solenoid valve 40 can completely shut off the injection line 30 when the system (e.g., air conditioning system) where the compressor 100 is located suddenly loses power, thereby fundamentally solving the problem in the prior art that the injection line 30 cannot be completely shut off when the system suddenly loses power, and eliminating the risk that fluids such as refrigerant still migrate into the compression chamber 20 after the system suddenly loses power, thereby reducing the reliability of the compressor. In addition, the electronic expansion valve used to control the injection line in the prior art is often installed outside the compressor, resulting in a relatively complex overall structure of the compressor. In contrast, in the present invention, the solenoid valve 40 is installed on the injection line in the housing 10, which can effectively simplify the structure of the compressor and the fluid injection path.

[0023] See also Figures 1 to 2According to one embodiment of the present invention, one end 31 of the injection line 30 is close to the inlet 21 of the compression chamber 20 to feed the fluid into the compression chamber 20. The solenoid valve 40 is located at or near the end 31, so that the solenoid valve 40 is positioned close to the inlet 21 of the compression chamber 20, so that when the system where the compressor 100 is located is suddenly powered off, the solenoid valve 40 can be turned off at the same time, thereby minimizing the fluid entering the compression chamber 20. In addition, the solenoid valve 40 is positioned close to the inlet 21 of the compression chamber 20, which can also minimize the dead volume of the compressor 100, which is beneficial to improving the performance of the compressor.

[0024] See also Figure 2 According to one embodiment of the present invention, the compressor 100 further includes: a first circuit 50, the circuit 50 including two wires 51, for connecting the solenoid valve 40 to the power supply of the compressor 100, so that the solenoid valve 40 can be opened and / or closed together with the compressor 100. By setting the first circuit 50 to be able to open and / or close the injection pipeline 30 based on the running or operating state of the compressor 100, the risk of fluid still entering the compression chamber 20 when the system where the compressor 100 is located is suddenly powered off, which can completely eliminate the risk of damage to the compression assembly of the press knitting machine.

[0025] According to one embodiment of the present invention, the compressor 100 further includes: a system controller 80 for monitoring and controlling the operation or operating state of the compressor. The system controller 80 may be arranged on the compressor, or may be a system controller of a device to which the compressor is applied (i.e., a system in which the compressor is located, such as an air conditioner), i.e., the system controller 80 may also be arranged on the device.

[0026] According to one embodiment of the present invention, the compressor 100 further includes: a second circuit 60, which includes two wires 61 for connecting the solenoid valve 40 to the system controller 80. It should be noted that the system controller 80 shown in the figure is schematic and is only used to illustrate the connection relationship between the system controller 80 and the solenoid valve 40. The system controller 80 can be set on the compressor or on other equipment using the compressor according to specific circumstances. When the solenoid valve 40 is connected to the system controller 80, the system controller 80 can control the opening and / or closing of the solenoid valve 40 as needed when the compressor 100 is running. By setting the second circuit 60, not only can the problem of dead volume of the compressor existing in the prior art be reduced to a large extent and the performance of the compressor 100 when the fluid does not need to be injected be improved, but also the system control of the compressor 100 can be facilitated.

[0027] According to an embodiment of the present invention, the compressor 100 further includes: a containing box 70 installed in the housing 10 and used to contain at least one of the power supply and the system controller 80 .

[0028] See also Figure 3 According to one embodiment of the present invention, the compressor 100 further includes: a first terminal 52 disposed in the receiving box 70, for connecting the first circuit 50 to the power source.

[0029] See also Figure 3 According to one embodiment of the present invention, the compressor 100 further includes: a second terminal 62 disposed in the receiving box 70 , for connecting the second circuit 60 to the system controller 80 .

[0030] According to one embodiment of the present invention, the compressor 100 is a scroll compressor, and the fluid is a refrigerant.

[0031] According to one embodiment of the present invention, a method for controlling a compressor 100 is provided, comprising: (a) enabling a first circuit 50 that connects a solenoid valve 40 to a power supply of the compressor 100, so as to open the solenoid valve 40 when the compressor 100 is turned on; and (b) enabling the first circuit 50, so as to close the solenoid valve 40 when the compressor 100 is turned off.

[0032] According to one embodiment of the present invention, after the step of opening the solenoid valve 40 and before the step of closing the solenoid valve 40, the method further includes: (c) deactivating the first circuit 50 and activating the second circuit 60 connecting the solenoid valve 40 to the system controller 80 in the compressor 100, so that the solenoid valve 40 is closed and / or opened by the system controller 80 when the compressor 100 is running.

[0033] According to one embodiment of the present invention, the method further includes: (d) activating the first circuit 50 and deactivating the second circuit 60 to turn off the solenoid valve 40 when the compressor 100 is turned off.

[0034] The user can select and set the execution order of the method for controlling the compressor 100 according to specific needs. When the compressor 100 needs to be system controlled, the steps (a), (c), (b) or (a), (c), (d) are selected to be executed in sequence, so as to accurately control the solenoid valve 40, thereby facilitating the improvement of the reliability and other performance of the compressor 100. When the compressor 100 does not need to be system controlled, the steps (a) and (b) are selected to be executed in sequence, which is also conducive to improving the reliability of the compressor 100.

[0035] That is, when the system where the compressor 100 is located (i.e., the equipment used by the compressor, such as an air conditioner) is suddenly powered off, the compressor will also stop, in which case the step of closing the solenoid valve is performed. When the system is restarted, the compressor is also restarted, in which case the step of opening the solenoid valve is performed.

[0036] When the system where the compressor 100 is located (i.e., the equipment used by the compressor, such as an air conditioner) is in a normal operating state, the compressor 100 is also in a normal operating state. If the user needs to shut down the injection line to stop injecting the fluid into the compressor, the system controller 80 sends a switch signal, for example, to shut down the solenoid valve. When the user needs to restart the injection line to inject the fluid into the compressor, the system controller 80 also sends a switch signal, for example, to open the solenoid valve.

[0037] Those skilled in the art can understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing conflicts in structure or principle.

[0038] After describing the preferred embodiments of the present invention in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the appended claims, and the present invention is not limited to the exemplary embodiments described in the specification.

Claims

1. A compressor, comprising: a housing in which a compression chamber is disposed; An injection pipeline, installed in the housing, for injecting fluid into the compression chamber; A solenoid valve is installed on the injection pipeline in the housing and is used to control the on and off of the fluid in the injection pipeline; a first circuit for connecting the solenoid valve to a power source of the compressor so that the solenoid valve is turned on and / or off together with the compressor; a system controller for monitoring and controlling the operation of the compressor; The second circuit is used to connect the solenoid valve to the system controller so that the solenoid valve can be turned on or off by the system controller when the compressor is running; and The containing box is installed in the shell and is used for containing the system controller.

2. The compressor according to claim 1, wherein: The solenoid valve is positioned proximate the inlet of the compression chamber.

3. The compressor according to claim 1, wherein: The receiving box is also used to receive the power source.

4. The compressor according to claim 3, further comprising: A first terminal, disposed in the receiving box, for connecting the first circuit to the power source; and The second terminal is disposed in the receiving box and is used to connect the second circuit to the system controller.

5. The compressor according to any one of claims 1 to 4, the compressor being a scroll compressor and the fluid being a refrigerant.

6. A method for controlling a compressor according to claim 1, comprising: Connecting the solenoid valve to the power supply of the compressor so that the solenoid valve is turned on when the compressor is turned on and is turned off when the compressor is turned off, so as to control the on and off of the fluid in the injection pipeline, and The solenoid valve is connected to a system controller so that when the compressor is running, the solenoid valve is closed and / or opened by the system controller to control the on and off of the fluid in the injection pipeline.

7. The method according to claim 6, wherein: The step of closing and / or opening the solenoid valve by the system controller comprises: The system controller sends a switch signal to control the opening and / or closing of the solenoid valve.

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