A variable displacement cylinder, pump body, compressor and air conditioner

Abstract

This invention belongs to the field of air conditioning compressor technology, and relates to a variable displacement cylinder, a pump body, a compressor, and an air conditioner. The variable displacement cylinder includes a cylinder body, within which a chamber and an intake port communicating with the chamber are provided. A variable displacement channel is provided on the cylinder body, one end of which communicates with the intake port, and the other end of which communicates with the chamber. The variable displacement cylinder also includes a variable displacement component, which is radially adjustable along the variable displacement channel and is used to adjust the connection between the intake port and the variable displacement channel. The variable displacement cylinder provided by this invention controls the connection between the intake port and the variable displacement channel on the cylinder body by controlling the variable displacement component to adjust the compression volume of the chamber, thereby adjusting the power of the compressor. This solves the problem of energy efficiency performance of existing variable frequency rotor compressors in different application scenarios, while simultaneously meeting the energy efficiency requirements of air conditioning systems under low and high load conditions.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning compressor technology, and relates to a variable displacement cylinder, pump body, compressor and air conditioner. Background Technology

[0002] The air conditioner compressor plays a crucial role in driving the refrigerant in the air conditioner's refrigerant circuit, and it is typically installed in the outdoor unit. Currently, some air conditioner compressors on the market use a rolling rotor type, which is widely used in the refrigeration and heating industries due to its simple structure, low cost, and high reliability. For example, it is widely used in air conditioners, water heaters, and refrigeration equipment.

[0003] With the improvement of national production standards and user demands, in order to ensure the energy efficiency of air conditioners under both low and high load conditions, more and more variable frequency and variable capacity technologies are being widely applied in air conditioning technology. Currently, variable capacity technology is usually used in twin-cylinder compressors, while small household air conditioner compressors still mostly use variable frequency rotors. In order to further improve the energy efficiency performance of variable frequency rotor compressors in different application scenarios, and at the same time meet the energy efficiency requirements of air conditioning systems under both low and high load conditions. Summary of the Invention

[0004] In view of this, the present invention provides a variable displacement cylinder, a pump body, a compressor, and an air conditioner. By controlling the opening and closing of the suction port and the variable displacement channel on the cylinder body through the variable displacement component, the compression volume of the chamber is adjusted, thereby adjusting the power of the compressor. This solves the problem of energy efficiency performance of the variable frequency rotor compressor in different application scenarios in the prior art, while meeting the energy efficiency requirements of the air conditioning system under low and high load conditions.

[0005] To address the aforementioned problems, according to one aspect of this application, the present invention provides a variable displacement cylinder. The variable displacement cylinder includes a cylinder body, a chamber and an intake port communicating with the chamber are provided within the cylinder body, and a variable displacement channel is provided on the cylinder body. One end of the variable displacement channel communicates with the intake port, and the other end of the variable displacement channel communicates with the chamber. The variable displacement cylinder also includes a variable displacement assembly, which is radially adjustable along the variable displacement channel and is used to adjust the opening and closing of the variable displacement channel.

[0006] In some embodiments, the variable capacity channel has an arc-shaped structure, and the arc of the variable capacity channel corresponds to an angle of 30° to 100°.

[0007] In some embodiments, a mounting groove is provided on the cylinder body, the mounting groove is arranged radially along the cylinder body, the mounting groove is arranged radially along the variable displacement channel, and the mounting groove is connected to the variable displacement channel.

[0008] The variable capacity assembly includes a variable capacity slide, which is slidably connected in the mounting groove to control the opening and closing of the variable capacity channel.

[0009] In some embodiments, the mounting slot also communicates with the chamber.

[0010] In some embodiments, the variable capacity assembly further includes an elastic element disposed in the mounting groove, one end of the elastic element being connected to the variable capacity channel, and the other end of the elastic element being connected to the variable capacity slide.

[0011] To address the aforementioned problems, according to another aspect of this application, the present invention also provides a pump body comprising the aforementioned variable displacement cylinder.

[0012] In some embodiments, the pump body further includes a pump body and a control system, wherein the control system is electrically connected to the pump body and is drivenly connected to the variable displacement cylinder.

[0013] In some embodiments, the control system includes a controller, and a high-pressure control valve and a low-pressure control valve electrically connected to the controller. The high-pressure control valve is connected to the exhaust end of the pump body, and the low-pressure control valve is connected to the inlet end of the pump body.

[0014] To address the aforementioned problems, according to another aspect of this application, the present invention also provides a compressor comprising the aforementioned pump body.

[0015] To address the aforementioned problems, according to another aspect of this application, the present invention also provides an air conditioner comprising the aforementioned compressor.

[0016] Compared with the prior art, the variable displacement cylinder provided by the present invention has at least the following beneficial effects:

[0017] The variable displacement cylinder includes a cylinder body for compressing refrigerant, a chamber for compressing low-temperature, low-pressure refrigerant, and an intake port for introducing low-temperature, low-pressure refrigerant gas into the chamber. The cylinder body is provided with a variable displacement channel for changing the relative position of the chamber to the intake. The variable displacement cylinder includes a variable displacement assembly for controlling the opening and closing of the variable displacement channel. The variable displacement assembly is radially adjustable along the cylinder body to facilitate installation and prevent excessive impact from high-pressure gas in the chamber on the assembly. It should be noted that the variable displacement cylinder provided in this embodiment is applied in the field of air conditioning compressors to adjust the operating state of the compressor.

[0018] In actual use, when the air conditioner is first turned on, the indoor temperature is high, and the compressor faces a large load, thus requiring a large amount of cooling capacity. By closing the variable capacity channel through the variable capacity component, the working volume of the internal chamber of the cylinder body for compressing the refrigerant increases during operation, thereby increasing the cooling capacity output of the compressor to enable the air conditioner to cool quickly. When the indoor temperature approaches or reaches the set temperature of the air conditioner, the compressor faces a smaller load, thus requiring a smaller amount of cooling capacity. By opening the variable capacity channel through the variable capacity component, the working volume of the internal chamber of the cylinder body for compression decreases during operation, thereby reducing the cooling capacity output of the compressor to reduce the power consumption of the compressor at low load and further improve the compressor's energy efficiency. This invention provides a variable displacement cylinder that controls the opening and closing of the variable displacement channel by controlling the variable displacement component, thereby adjusting the compression volume in the chamber. This further improves the compressor's energy efficiency at the lowest or highest load while ensuring the energy efficiency requirements of the compressor under rated load conditions. It solves the problem of energy efficiency performance of variable frequency rotor compressors in different application scenarios in the prior art, while meeting the energy efficiency requirements of air conditioning systems under low and high load conditions.

[0019] In another aspect, the pump body provided by the present invention is designed based on the above-mentioned variable displacement cylinder, and its beneficial effects are the same as those of the above-mentioned variable displacement cylinder, which will not be repeated here.

[0020] In another aspect, the compressor provided by the present invention is designed based on the above-described pump body, and its beneficial effects are the same as those of the above-described pump body, which will not be repeated here.

[0021] In another aspect, the air conditioner provided by the present invention is designed based on the above-mentioned compressor, and its beneficial effects are the same as those of the above-mentioned compressor, which will not be repeated here.

[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the variable displacement cylinder provided in an embodiment of the present invention;

[0025] Figure 2A cross-sectional structural schematic diagram of a variable displacement cylinder provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the assembly structure of the variable displacement assembly of the variable displacement cylinder provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the overall structure of the pump body provided in an embodiment of the present invention.

[0028] Wherein: 100, cylinder body; 110, intake port; 120, chamber; 130, variable displacement channel; 140, variable displacement port; 150, mounting slot; 200, variable displacement assembly; 210, variable displacement slide; 220, elastic element; 300, control system; 310, high pressure control valve; 320, low pressure control valve; 330, intake end; 340, exhaust end; 400, crankshaft; 500, roller. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0030] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1

[0033] This invention provides a variable displacement cylinder, such as... Figures 1 to 3As shown, the variable displacement cylinder includes a cylinder body 100, a chamber 120 and an air intake 110 communicating with the chamber 120, and a variable displacement channel 130 provided on the cylinder body 100. One end of the variable displacement channel 130 is connected to the air intake 110, and the other end of the variable displacement channel 130 is connected to the chamber 120. The variable displacement cylinder also includes a variable displacement assembly 200, which is radially adjustable along the variable displacement channel 130 and is used to adjust the opening and closing of the variable displacement channel 130.

[0034] Specifically, the variable displacement cylinder includes a cylinder body 100 for compressing refrigerant, a chamber 120 for compressing low-temperature, low-pressure refrigerant, and an intake port 110 for introducing low-temperature, low-pressure refrigerant gas into the chamber 120. The cylinder body 100 is provided with a variable displacement channel 130 for changing the relative position of the chamber 120 to the intake. The variable displacement cylinder includes a variable displacement assembly 200 for controlling the opening and closing of the variable displacement channel 130. The variable displacement assembly 200 is radially adjustable along the cylinder body 100, which facilitates its installation and prevents the high-pressure gas in the chamber 120 from causing significant impact on the variable displacement assembly 200. It should be noted that the variable displacement cylinder provided in this embodiment is applied in the field of air conditioning compressors to adjust the operating state of the compressor.

[0035] In actual use, when the air conditioner is first turned on, the indoor temperature is high, and the compressor faces a large load, thus requiring a large amount of cooling capacity. By closing the variable capacity channel 130 through the variable capacity component 200, the working volume of the internal chamber 120 of the cylinder body 100 for compressing the refrigerant increases during operation, thereby increasing the cooling capacity output of the compressor to enable the air conditioner to cool quickly. When the indoor temperature approaches or reaches the set temperature of the air conditioner, the compressor faces a smaller load, thus requiring a smaller amount of cooling capacity. By opening the variable capacity channel 130 through the variable capacity component 200, the working volume of the internal chamber 120 of the cylinder body 100 for compression decreases during operation, thereby reducing the cooling capacity output of the compressor to reduce the power consumption of the compressor at low load and further improve the compressor's energy efficiency. The variable displacement cylinder of this embodiment controls the opening and closing of the variable displacement channel 130 by controlling the variable displacement component 200, thereby adjusting the compression volume within the chamber 120. This further improves the compressor's energy efficiency at both the lowest and highest loads while ensuring the energy efficiency requirements of the compressor under rated load conditions. This solves the problem of energy efficiency performance of existing variable frequency rotor compressors in different application scenarios, while simultaneously meeting the energy efficiency requirements of air conditioning systems under low and high load conditions. In a specific embodiment, such as... Figure 2 As shown, the variable capacity channel 130 has an arc-shaped structure, and the angle corresponding to the arc of the variable capacity channel 130 is 30° to 100°.

[0036] Specifically, it should be noted that the variable displacement channel 130 extends circumferentially along the cylinder body 100 to change the volume of the chamber 120 used for air intake. The other end of the variable displacement channel 130 is a variable displacement port 140, which communicates with the chamber 120. The opening and closing of the variable displacement port 140 is used to adjust the volume of the compression portion of the chamber 120 within the variable displacement cylinder to improve the performance of the cylinder body 100 under different loads. Specifically, when the variable displacement channel 130 is in the open state, the volume of the chamber 120 inside the cylinder body 100 used for compression decreases. This state is suitable for operating conditions with lower loads to achieve energy saving. When the variable displacement channel 130 is in the closed state, the volume of the chamber 120 inside the cylinder body 100 used for compression increases. This state is suitable for operating conditions with higher loads to achieve efficient temperature regulation. In actual use, the change in volume of the variable displacement cylinder is more obvious when the angle corresponding to the arc of the variable displacement channel 130 is between 30° and 100°, preferably 30°, 35° and 40°.

[0037] like Figure 2 As shown in the cross-sectional structural diagram of the variable displacement cylinder provided in this embodiment of the invention, the variable displacement channel 130 has an arc-shaped structure. The inner wall of the arc-shaped variable displacement channel 130 has a relatively smooth transition to reduce the resistance of the refrigerant entering the channel, thereby improving the performance of the variable displacement cylinder. It should be noted that, without affecting the performance of the variable displacement cylinder, the variable displacement channel 130 inside the cylinder body 100 can be of other shapes and structures.

[0038] In a specific embodiment, such as Figure 2 and Figure 3 As shown, the cylinder body 100 is provided with a mounting groove 150, which is arranged radially along the cylinder body 100 and radially along the variable displacement channel 130, and the mounting groove 150 is connected to the variable displacement channel 130; the variable displacement assembly 200 includes a variable displacement slide 210, which is slidably connected in the mounting groove 150 to control the opening and closing of the variable displacement channel 130.

[0039] Specifically, it should be noted that the mounting slot 150 is provided on the cylinder body 100 to mount the variable displacement assembly 200 onto the cylinder body 100. For example... Figure 2 A cross-sectional structural diagram of the variable displacement cylinder provided in the embodiments of the present invention, and as shown in the figure. Figure 3As shown in the schematic diagram of the assembly structure of the variable displacement cylinder assembly provided in this embodiment of the invention, the mounting groove 150 is arranged radially along the cylinder body 100 to install the variable displacement assembly 200 radially onto the cylinder body 100, thereby making the variable displacement assembly 200 perpendicular to the variable displacement channel 130. Furthermore, the variable displacement slide 210 isolates the variable displacement channel 130 on the radial cross section of the variable displacement channel 130. Therefore, when the variable displacement channel 130 is in the closed state, the high-pressure gas in the section from the variable displacement port 140 to the variable displacement slide 210 is not likely to damage the variable displacement slide 210. In addition, during the processing, only the mounting groove 150 needs to be processed radially along the cylinder body 100, thereby improving the processing and assembly efficiency.

[0040] In a specific embodiment, such as Figure 2 As shown, the mounting slot 150 is also connected to the chamber 120.

[0041] Specifically, the mounting slot 150 is connected to the chamber 120 to increase the air intake efficiency in the chamber 120, thereby further improving the working efficiency of the variable displacement cylinder.

[0042] In a specific embodiment, such as Figure 3 As shown, the variable capacity assembly 200 also includes an elastic element 220, which is disposed in the mounting groove 150. One end of the elastic element 220 is connected to the variable capacity channel 130, and the other end of the elastic element 220 is connected to the variable capacity slide 210.

[0043] Specifically, it should be noted that under the action of the elastic element 200, the displacement slide 210 remains in the rear end of the mounting groove 150 so that the displacement channel 130 is opened. The elastic element 220 is disposed within the displacement channel 130, and the other end of the elastic element 220 is connected to the displacement slide 210 to realize the reciprocating motion of the displacement slide 210, such as... Figure 3 The schematic diagram of the assembly structure of the variable displacement cylinder assembly provided in this embodiment of the invention shows that one end of the elastic member 220 is fixed to the end of the mounting groove 150 away from the chamber 120, and the other end of the elastic member 220 is connected to the variable displacement slide 210. The variable displacement assembly 200 includes a first state and a second state. When the variable displacement assembly 200 is in the first state, the elastic member 220 is at its original length and pulls the variable displacement slide 210 close to one end of the elastic member 220. At this time, the variable displacement channel 130 is in a conductive state. When the variable displacement assembly 200 is in the second state, high-pressure gas can be injected into the variable displacement channel 130 to make the variable displacement slide 210 move along the direction from one end of the elastic member 220 to the other end. At this time, the variable displacement channel 130 is in a closed state.

[0044] Example 2

[0045] This invention provides a pump body, such as... Figure 4As shown, the pump body includes the variable displacement cylinder of Example 1.

[0046] Specifically, the pump body provided in this embodiment of the invention, through the variable displacement cylinder in embodiment 1, adjusts the volume of the chamber 120 of the cylinder body 100 for refrigerant compression by setting a variable displacement channel 130 on the periphery of the cylinder body 100, thereby solving the problem of poor energy efficiency of the variable frequency rotor compressor under extreme operating conditions in the prior art.

[0047] In a specific embodiment, such as Figure 4 As shown, the pump body also includes a pump body and a control system 300. The control system 300 is electrically connected to the pump body and is driven by the variable displacement cylinder of Embodiment 1.

[0048] Specifically, such as Figure 4 The overall structural diagram of the pump body provided in this embodiment of the invention is shown. The control system 300 is used to realize the automatic control of the pump body. The pump body includes a crankshaft 400 and rollers 500. The crankshaft 400 is connected to the rollers 500. An eccentric structure is provided on the crankshaft 400. The rollers 500 are sleeved on the outer periphery of the eccentric structure. The rollers 500 are disposed in the chamber 120 of the cylinder body 100 and perform eccentric movement in the chamber 120 to draw in, compress, and discharge the refrigerant.

[0049] Furthermore, the control system 300 includes a controller, and a high-pressure control valve 310 and a low-pressure control valve 320 electrically connected to the controller. The high-pressure control valve 310 is connected to the exhaust end 340 of the pump body, and the low-pressure control valve 320 is connected to the air inlet end 330 of the pump body.

[0050] Specifically, the controller, through instructions from the air conditioning system, automatically selects the opening and closing of the high-pressure control valve 310 and the low-pressure control valve 320 according to the required cooling capacity under different loads. Specifically, when the air conditioner is first turned on, the indoor temperature is high, the air conditioner faces a large load, and the required compressor cooling capacity adjustment is large. At this time, the controller opens the high-pressure control valve 310, which is connected to the discharge end 340 of the pump body. When the compressor load is large, the valve of the high-pressure control valve 310 opens, the mounting groove 150 is under high pressure, and the variable-capacity vane 210 slides towards the chamber 120 to block the variable-capacity channel 130. At this time, the volume of the chamber 120 used for compression increases, the working volume increases, and the compressor outputs more cooling capacity. When the indoor temperature approaches or reaches the air conditioner's set temperature... When the air conditioner is under a relatively small load, the required cooling capacity adjustment of the compressor is small. At this time, the controller opens the low-pressure control valve 320, which is connected to the pump body inlet 330. When the compressor load is small, the valve of the low-pressure control valve 320 is open, and the mounting groove 150 is under low pressure. The variable displacement slide 210 is pulled by the elastic element 220 to make the variable displacement channel 130 open. At this time, the volume of the chamber 120 used for compression becomes smaller, the working volume becomes smaller, and the cooling capacity and power of the compressor become smaller. This achieves single-cylinder variable displacement of the compressor while reducing the power consumption of the compressor under low-pressure load.

[0051] Example 3

[0052] This invention provides a compressor, which includes the pump body of embodiment 2.

[0053] Specifically, the compressor provided in this embodiment of the invention solves the problem of poor energy efficiency of the variable frequency rotor compressor under extreme operating conditions in the prior art through the pump body in embodiment 2, thereby improving the working energy efficiency of the variable frequency rotor compressor.

[0054] Example 4

[0055] This invention provides an air conditioner, which includes the compressor of embodiment 3.

[0056] Specifically, the air conditioner provided in this embodiment of the invention solves the problem of poor energy efficiency of the variable frequency rotor compressor under extreme operating conditions in the prior art by using the compressor in embodiment 3, and further expands the cooling capacity range of the compressor.

[0057] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A variable displacement cylinder, comprising a cylinder body, wherein a chamber is provided within the cylinder body and an intake port communicating with the chamber, characterized in that, The cylinder body is provided with a variable displacement channel, one end of which is connected to the intake port and the other end of which is connected to the chamber; the variable displacement cylinder also includes a variable displacement assembly, which is radially adjustable along the variable displacement channel and is used to adjust the opening and closing of the variable displacement channel; The variable capacity channel has an arc-shaped structure, and the angle corresponding to the arc of the variable capacity channel is 30° to 100°. The cylinder body is provided with a mounting groove, which is arranged radially along the cylinder body and radially along the variable displacement channel, and the mounting groove is connected to the variable displacement channel. The variable capacity assembly includes a variable capacity slide plate, which is slidably connected in the mounting groove to control the opening and closing of the variable capacity channel; The mounting slot is also connected to the chamber; The variable displacement passage extends circumferentially along the cylinder body to change the volume of the chamber used for air intake. The other end of the variable displacement passage is the variable displacement port, which is connected to the chamber.

2. The variable displacement cylinder according to claim 1, characterized in that, The variable capacity assembly also includes an elastic element disposed in the mounting groove. One end of the elastic element is connected to the variable capacity channel, and the other end of the elastic element is connected to the variable capacity slide.

3. A pump body, characterized in that, The pump body includes the variable displacement cylinder as described in any one of claims 1 to 2.

4. The pump body according to claim 3, characterized in that, The pump body also includes a pump body and a control system. The control system is electrically connected to the pump body and is also connected to the variable displacement cylinder via a transmission.

5. The pump body according to claim 4, characterized in that, The control system includes a controller, and a high-pressure control valve and a low-pressure control valve electrically connected to the controller. The high-pressure control valve is connected to the exhaust end of the pump body, and the low-pressure control valve is connected to the inlet end of the pump body.

6. A compressor, characterized in that, The compressor includes the pump body as described in any one of claims 3 to 5.

7. An air conditioner, characterized in that, The air conditioner includes the compressor as described in claim 6.

Images