WO2020118581A1 - Compressor and air-conditioning system and automobile applying same - Google Patents

Abstract

A compressor (100) comprises: a cover (110), a fixed scroll (120), an orbiting scroll (130), a connecting block (150) and a check valve (140); a gas supplement channel (112) is arranged on the cover (110); the fixed scroll (120) is fixedly connected with the cover (110); the orbiting scroll (130) and the fixed scroll (120) are in meshing connection to form a compression cavity (123); a gas supplement through hole (121) in communication with the compression cavity (123) is formed in the fixed scroll (120); the connecting block (150) is arranged between the cover (110) and the fixed scroll (120), and covers the gas supplement channel (112) and the gas supplement through hole (121); a connecting cavity (151) is arranged on the connecting block (150), and the connecting cavity (151) communicates with the gas supplement channel (112) and the gas supplement through hole (121); the check valve (140) is arranged between the cover (110) and the connecting block (150), and covers a gas supplement outlet (1121), close to the connecting block (150), of the gas supplement channel (112). Further comprised are an air conditioning system and an automobile applying the compressor (100). By arranging the connecting block and arranging the check valve in the connecting cavity of the connecting block, the gas supplement function is realized, and the clearance volume in the compression process can also be reduced, and so the power consumption of the compressor is reduced and the energy efficiency ratio is improved.

Description

Compressor and air-conditioning system and automobile applying the same The

【Technical Field】

This application relates to the technical field of refrigeration equipment, in particular to a compressor, an air-conditioning system and an automobile applying the same.

【Background technique】

Existing new energy vehicles, such as electric car air conditioning systems, usually use PTC (positive temperature) in their heating process coefficient (positive temperature coefficient thermosensitive material) electric heating, when using this scheme, the energy efficiency ratio of electric heating is low, which will significantly reduce the vehicle's battery life. Therefore, it is very necessary to use heat pump type air conditioners with higher energy efficiency. Therefore, in the prior art, a heat pump air-conditioning system with a supplementary air function is generally used, and the enthalpy can be supplemented to the middle compression chamber of the scroll compressor to improve the heating performance of the system and improve the above problems.

In the heating process of the existing electric vehicle air conditioning system, the air is supplied to the intermediate compression chamber of the compressor through the air supply pipeline. The air supply pipeline is generally provided with a solenoid valve. When the air supplement is not needed, the solenoid valve is closed, but the solenoid valve and the compression The pipeline between the compressors and the air supply channel to the compressor, the internal volume of these structures together create an additional process clearance volume of the compressor. Repeated compression of the process clearance volume increases the additional work of the compressor. This in turn leads to the problem of increased power consumption of the compressor and reduced energy efficiency ratio.

[Invention content]

The present application provides a compressor, an air-conditioning system and an automobile applying the same to solve the problem of the compressor process clearance in the heat pump type scroll compressor in the non-heating process, that is, the process that does not require supplemental air in the prior art The volume is too large, which leads to the problem of increased power consumption and reduced energy efficiency ratio.

In order to solve the above technical problems, a technical solution adopted by the present application is to provide a compressor, wherein the compressor includes:

Cover body, the cover body is provided with air supplement channel;

Static scroll, fixedly connected to the cover;

The movable scroll is meshed and connected with the static scroll to form a compression cavity; the static scroll is provided with a supplementary air through hole communicating with the compression cavity;

The connecting block is arranged between the cover body and the fixed scroll, covering the supplementary gas channel and the supplementary air through hole; the connecting block is provided with a connecting cavity, which connects the supplemental gas channel and the supplementary air through hole;

The one-way valve is arranged between the cover body and the connection block, and covers the supplementary gas outlet of the supplementary gas channel near the connection block.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide an air-conditioning system, wherein the air-conditioning system includes the compressor as described above.

To solve the above technical problem, another technical solution adopted by the present application is to provide an automobile, wherein the automobile includes the air conditioning system as described above.

The beneficial effects of the present application are: different from the situation in the prior art, the present application provides a compressor, an air-conditioning system and an automobile applying the same. By setting a connection cavity on the connection block and a one-way valve in the connection cavity, in a non-heating process, that is, a process that does not require supplemental gas, the one-way valve can block the supplemental gas channel and the supplemental gas through hole To reduce the clearance volume during compression, thereby reducing the power consumption of the compressor and improving the energy efficiency ratio.

【Explanation】

1 is a schematic structural diagram of an embodiment of a compressor provided by this application;

2 is a schematic diagram of the assembly structure of the cover body, the check valve and the connection block in the compressor shown in FIG. 1;

Figure 3 is an exploded view of the assembly of the cover body, one-way valve and connecting block shown in Figure 2;

4 is a front view of the cover shown in FIG. 2;

5 is a schematic structural view of a cross-sectional view of the cover shown in FIG. 4 taken along A-A' section;

6 is a schematic structural view of a connecting block in the compressor shown in FIG. 1;

7 is a front view of the connection block shown in FIG. 6;

8 is a schematic structural view of a cross-sectional view of the connecting block shown in FIG. 7 taken along the B-B' section;

9 is a schematic structural view of the fixed scroll shown in FIG. 1;

10 is an exploded view of the assembly of the cover connecting block and the fixed scroll in this embodiment;

11 is a front view of the fixed scroll and the barrel shown in FIG. 10 after assembly;

12 is a schematic structural diagram of a heating cycle of an air conditioning system provided by the present application.

【detailed description】

In order to make the technical problems solved by the present application, the adopted technical solutions and the achieved technical effects clearer, the technical solutions of the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The terms "first" and "second" in this application are for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may include at least one of the features either explicitly or implicitly. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship between the components in a certain posture (as shown in the drawings) , Movement, etc., if the specific posture changes, the directional indication changes accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference herein to "embodiments" means that specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments.

Please refer to FIGS. 1-6. FIG. 1 is a schematic structural view of an embodiment of a compressor provided by the present application; FIG. 2 is a schematic structural view of an assembly structure of a cover body, a check valve and a connecting block in the compressor shown in FIG. Figure 3 is an exploded view of the assembly of the cover, one-way valve and connecting block shown in Figure 2; Figure 4 is a front view of the cover shown in Figure 2; Figure 5 is the cover shown in Figure 4 in A-A' Schematic diagram of the sectional view of the cross section. The

The compressor 100 includes a cover 110, a fixed scroll 120, a movable scroll 130, a check valve 140, and a connecting block 150.

The cover body 110 is provided with a supplemental gas channel 112, the fixed scroll 120 is fixedly connected to the cover body 110, and the fixed scroll 120 is provided with a supplementary air through hole 121, wherein the fixed scroll 120 and the movable scroll The disk 130 is meshed and matched, and forms a compression cavity 123 for compressing the working medium; the connection block 150 is disposed between the cover body 110 and the fixed scroll 120 and covers the supplementary air passage 112 and the supplemental air through hole 121, the connection block The connection cavity 151 is provided on the 150, and the connection cavity 151 can communicate the supplemental gas channel 112 and the supplemental gas through hole 121.

Therefore, by connecting the supplemental gas channel 112 on the cover 110 with the connection cavity 151, and then connecting the connection cavity 151 with the supplemental gas through hole 121 on the fixed scroll 120, the working medium can pass through the supplemental gas channel 112 enters the connecting cavity 151 and then enters the compression cavity 123 to complete the supplement of the working medium.

In this embodiment, the one-way valve 140 is disposed between the cover 110 and the connection block 150, wherein the function of the one-way valve 140 is to only allow the working fluid to enter the connection cavity 151 from the supplemental gas channel 112, and at the same time, the connection cavity 151 can be prevented The working fluid inside flows back into the supplemental gas channel 112. Therefore, in a non-heating process, that is, a process that does not require supplemental air, the one-way valve 140 can block the supplemental air passage 112 and the supplemental air through-hole 121, thereby reducing the clearance volume during compression. Thereby reducing the power consumption of the compressor and improving the energy efficiency ratio.

Please further refer to FIG. 1, the one-way valve 140 is fixed to the cover body 110 by a fixing member such as a screw, and the one-way valve 140 can be accommodated in the connection cavity 151 by making the connection cavity 151 and the one-way valve 140 and the fixing member The matching of the outer contours can minimize the volume of the connection cavity 151. Therefore, it is possible to further reduce the clearance volume from the one-way valve to the supplementary air through hole.

Please refer to FIGS. 6-8. FIG. 6 is a schematic structural view of the connecting block in the compressor shown in FIG. 1; FIG. 7 is a front view of the connecting block shown in FIG. 6; FIG. 8 is a connecting block shown in FIG. -Schematic diagram of the cross-sectional view of the B'cross-section.

The connection chamber 151 includes a connecting groove 152 and a connecting hole 153. The connecting groove 152 is used to cover the supplementary gas outlet 1121 of the supplemental gas channel 112, so that the connecting groove 152 communicates with the supplemental gas channel 112, and the connecting hole 153 is used The connection groove 152 communicates with the supplementary air through hole 121. The one-way valve 140 is accommodated in the connecting groove 152. The one-way valve 140 may include a tongue spring 141 and a stopper 142. The tongue piece 141 is used to cover the supplementary gas outlet 1121, and the limiting piece 142 is disposed on the side of the tongue piece 141 facing away from the supplemental gas outlet 1121 and inclined toward the connecting block 150 relative to the tongue piece 141. The reed 141 is an elastic valve. When replenishment is required, the reed 141 is bent away from the replenishment outlet 1121, so that the working fluid can flow into the connecting groove 152 from the replenishment outlet 1121 When replenishment is not required, the reed 141 will closely cover the replenishment outlet 1121, thereby preventing the working fluid in the compression chamber 123 from flowing back into the replenishment passage 112 through the replenishment outlet 1121.

In this embodiment, the function of the limiting piece 142 is to limit the bending angle of the tongue piece 141. When the tongue piece 141 is bent and deformed to a certain angle, the tongue piece 141 can abut the limiting piece 142, the limiting piece 142 restricts the bending angle of the tongue piece 141 so as to prevent the tongue piece 141 from being excessively deformed and shorten its service life.

Please further refer to FIGS. 1-3. In this embodiment, a screw 143 is used to sequentially pass through the limiting piece 142 and the tongue piece 141 and then to be matched with the threaded hole 144 to fix the tongue piece 141 and the limiting piece 142 to the cover.体110上。 Body 110. The reed tongue 141, the limiting piece 142 and the nut portion of the screw are all provided in the connecting groove 152. The internal shape of the connecting groove 152 can be set according to the limiting piece 142 and the nut portion of the screw. Specifically, the connecting groove 152 can The first connecting groove 1521 matching the nut part and the second connecting groove 1522 matching the inclined surface of the limiting piece 142 are provided, therefore, the volume of the connecting groove 152 tends to be minimized, and the compression is reduced as much as possible Process clearance volume of the machine 100 during compression operation.

Please refer to FIG. 9, which is a schematic structural view of the fixed scroll shown in FIG. 1. The fixed scroll 120 and the movable scroll 130 can form a plurality of compression chambers 123, and the fixed scroll 120 can be provided with a plurality of supplementary air through holes 121, and each supplementary air through hole 121 can be connected to a compression cavity 123 Connected. Among them, the fixed scroll 120 is provided with fixed scroll teeth 122 arranged in a vortex, and the same movable scroll plate 130 is also provided with a movable scroll tooth, which meshes with the movable scroll tooth through the fixed scroll 122 Thus, the compression cavity 123 can be formed.

Wherein, in the direction of the edge of the fixed scroll 120 toward the center, the fixed scroll 120 may be divided into a low-pressure region, a medium-pressure region, and a high-pressure region in this order. Each supplementary air through hole 121 is provided in the medium pressure area. Among them, the low-pressure area is located in the edge area of the fixed scroll 120, and the high-pressure area is located in the center area of the fixed scroll 120. An air outlet 124 communicating with the compression chamber 123 is also provided in the central area of the fixed scroll 120. The rotating scroll 130 rotates relative to the fixed scroll 120 to press the working medium in the compression chamber 123 so that the air outlet 124 is pressed out.

When the fixed scroll 120 is provided with a plurality of supplementary air through holes 121, correspondingly, the connection cavity 151 may further include a plurality of connection holes 153 matching the supplementary air through holes 121, each of the connection holes 153 It communicates with one supplementary air through hole 121, and all the connecting holes 153 communicate with the connecting groove 152.

In this embodiment, the supplemental gas channel 112, the connecting cavity 151, and the supplemental gas through-hole 121 form a supplemental gas circuit that compensates the working fluid to the compression chamber. Therefore, in order to prevent leakage of the working fluid in the supplemental gas circuit. It is also necessary to provide a sealing structure between the cover body 110 and the connecting block 150, the connecting block 150 and the fixed scroll 120.

Specifically, a first sealing structure 161 is provided between the connection block 150 and the cover 110, and the first sealing structure 161 is disposed around the opening of the cover 110 near the connection cavity 151, wherein the first sealing structure 161 may include a transition block 150 or a first groove 1611 on the cover 110, and a first sealing ring 1612 disposed in the first groove 1611.

A second sealing structure 162 is provided between the adapter block 150 and the fixed scroll 120. The second sealing structure 162 is disposed around the opening of the connecting cavity close to the fixed scroll. The second sealing structure 162 includes the connecting block 150 or the static seal. The second groove 1621 on the scroll plate 120 and the second seal ring 1622 provided in the second groove 1621. Wherein, the second groove 1621 may also be arranged around the opening of the connection hole 153; when a plurality of connection holes 153 are provided on the connection block 150, each connection hole 153 and a supplementary air through hole 121 may be provided with a docking position Second sealing structure 162.

The adapter block 150 is further provided with a fixing structure 154, wherein the fixing structure 154 may be a fixing installation hole, and a fixing member such as a screw is provided in the fixing installation hole, so that the entire adapter block 150 is fixedly installed on the cover 110.

The compressor in this embodiment further includes a power unit 170, a controller 180, and a housing 190.

Please further refer to FIGS. 1-2. The cover 110 covers the opening on the side of the housing 190, and is fixedly connected to the housing 190. The fixed scroll 120, the movable scroll 130, the check valve 140, and the connecting block 150. The power device 170 is provided in the cavity space formed by the cover 110 and the housing 190. The controller 180 is covered at the opening on the other side of the housing 190 to form a sealed cavity space with the housing 190 and the cover 110.

In this embodiment, the power device 170 includes a rotating shaft 171, which is connected to the orbiting scroll 130 for driving the orbiting scroll 130 to rotate relative to the stationary scroll 120, and the controller 180 is used to control the power The rotation of the rotating shaft 171 of the device 170. Therefore, by controlling the rotation of the rotating shaft 171 of the power device 170 by the controller 180, the movable scroll 130 can rotate relative to the fixed scroll 120, and thus the compression chamber 123 formed by the movable scroll 130 and the fixed scroll 120 can be made When the movable scroll 130 rotates relative to the fixed scroll 120, a volume change occurs, so that the working medium in the compression chamber 123 can be compressed.

Please refer to Figure 10-11. FIG. 10 is an exploded view of the assembly of the cover connecting block and the fixed scroll in this embodiment; FIG. 11 is a front view of the fixed scroll and the barrel shown in FIG. 10 after being assembled. When the working fluid in the compression chamber 123 is discharged from the compression chamber 123 through the exhaust hole 124, the discharged working fluid enters the exhaust chamber 128 between the cover 110 and the fixed scroll 120 through the exhaust hole 124, The cover body 110 is further provided with an exhaust passage 114. The exhaust passage 114 and the exhaust hole 124 communicate with each other through the exhaust chamber 128, that is, the working fluid pressed through the compression chamber 123 enters the exhaust chamber 128 through the exhaust hole 124 And then discharged from the exhaust passage 114.

Further, the anti-overpressure hole 126 may also be provided on the fixed scroll 120, wherein the anti-overpressure hole 126 also communicates with the compression chamber 123, and the anti-overpressure hole 126 is used to exhaust the compression chamber 123 and the aforementioned exhaust The cavity 128 communicates, so that when the working fluid pressure in the compression chamber 123 is too large, part of the working fluid in the compression chamber 123 is discharged from the overpressure prevention hole 126, so that the working fluid pressure in the compression chamber 123 can be at a preset In the pressure range. Wherein, the anti-overpressure hole 126 is located on the side of the exhaust chamber 128, and the one-way valve as described above can also be provided. When the working fluid pressure in the compression chamber 123 is too large, the one-way valve opens so that the anti-overpressure hole 126 and the The exhaust chamber communicates, so that part of the working fluid in the compression chamber 123 is discharged for decompression; when the working fluid pressure in the compression chamber 123 is within a preset pressure range, the one-way valve can be closed, so that the The working medium will not be discharged from the overpressure prevention hole 126.

The supplementary gas circuit provided in this application is generally used in the heating process of the compressor, in which the compressor compresses the low-temperature and low-pressure working medium into the high-temperature and high-pressure working medium in the compression chamber 123, thereby making the high-temperature and high-pressure working medium from After the vent hole 124 is discharged, the preset space is heated. In the heating process, the working fluid of the compressor generally circulates in the form of steam. In the heating process, the suction pressure of the compressor decreases, the specific volume of the refrigerant increases, and the air volume of the compressor decreases, that is, the working fluid flow of the system decreases, so there will be poor heating performance of the system and high compressor exhaust temperature , The decline in energy efficiency ratio, reliability and life expectancy. Therefore, the compression chamber 123 needs to be supplemented with working fluid through the gas supplement circuit, and the high-temperature and high-pressure working fluid steam has a preset temperature and pressure, so that the working fluid steam meets the requirements of the heating process.

Therefore, the present application also provides an air conditioning system, which may include the compressor 100 as described above. Among them, the air supplement circuit in the compressor 100 is used for the heating cycle of the air conditioning system.

Please refer to FIG. 12, which is a schematic structural diagram of a heating cycle of an air conditioning system provided by the present application. The air conditioning system 200 may include a compressor 100, a condenser 210, an evaporator 220, an expansion valve 230, and an economizer 240 connected to form a working circuit of the air conditioning system.

When this air-conditioning system 200 enters the heating process, the evaporator 220 is connected to the suction hole of the compressor 100. The evaporator 220 is used to convert the low-temperature and low-pressure working medium into low-pressure working medium steam; The low-pressure working fluid vapor is sucked into the compression cavity 123, and the low-pressure working fluid vapor is compressed through the compression cavity 123 to form a high-temperature and high-pressure working fluid vapor. In this process, the air supplement circuit of the compressor 100 supplements the working pressure of the compression cavity 123 High-temperature and high-pressure working fluid vapor is discharged from the exhaust passage 124 of the compressor 100 into the condenser 210, and the high-temperature and high-pressure working fluid occurs in the condenser 210 The heat exchange can thus heat the preset space; the condensed working fluid flows through the economizer 240, so that the condensed working fluid further exchanges heat; the condensed working fluid flowing through the economizer 240 further flows into the evaporator 220 In the next round of heating.

The supplemental gas channel 112 may be connected to the outlet of the economizer 240, that is, the working fluid flowing out of the economizer 240 is replenished into the compression chamber 123.

The air-conditioning system in this embodiment can be applied to the air-conditioning system of a vehicle, and can realize cooling and heating inside the vehicle. Further, in other embodiments, the air conditioning system in this embodiment can also be applied to other air conditioning systems such as indoor air conditioners and refrigerators, and details are not described here.

Therefore, the present application also provides an automobile, which can adopt the air conditioning system as described above.

In summary, this application provides a compressor, an air-conditioning system and an automobile using the same. By providing a connection block in the accommodating cavity, a connection cavity is provided on the connection block to connect the supplementary air through hole on the housing assembly with the supplementary air through hole on the scroll plate to form a supplementary air circuit, which can be achieved The structure of the entire air supplement circuit is simple. At the same time, a check valve can be provided in the connecting cavity of the connecting block, thereby reducing the clearance volume during the compression process, thereby reducing the power consumption of the compressor and improving the energy efficiency ratio.

The above is only an embodiment of the present application, and therefore does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by the description and drawings of this application, or directly or indirectly used in other related technologies In the field, the same reason is included in the scope of patent protection of this application.

Claims (10)

1. A compressor, characterized in that the compressor includes:

   A cover body, which is provided with an air supplement channel;

   The fixed scroll is fixedly connected to the cover;

   The movable scroll is meshed and connected with the static scroll to form a compression cavity; the static scroll is provided with a supplementary gas through hole communicating with the compression cavity;

   A connection block is provided between the cover body and the fixed scroll, covering the supplementary gas channel and the supplementary air through hole; a connection cavity is provided on the connection block, and the connection cavity communicates with the Air supplement channel and the air supplement through hole;

   A one-way valve is provided between the cover body and the connecting block, and covers the supplementary gas outlet of the supplementary gas channel near the connecting block.
2. The compressor according to claim 1, wherein the connection cavity includes a connection groove and a connection hole that communicate with each other, the connection groove communicates with the supplemental gas passage, and the connection hole communicates with the supplemental gas through hole ;

   The one-way valve is fixed on the cover body and accommodated in the connecting groove.
3. The compressor according to claim 2, wherein the one-way valve includes a tongue spring and a limiter, the tongue reed covers the supplementary gas outlet, and the limiter is opposite to the tongue The sheet is inclined toward the connection block.
4. The compressor according to claim 3, wherein the limiting piece is accommodated in the connecting groove, and an inner wall of the connecting groove is matched with the limiting piece.
5. The compressor according to claim 2, wherein the number of the supplementary air through holes is plural, the number of the connecting holes is plural, the supplementary air through holes and the connecting holes are one One-to-one correspondence; the number of the connection groove is one, and a plurality of the connection holes are all connected to one connection groove.
6. The compressor according to claim 2, wherein a first sealing structure is provided between the connecting block and the cover body, the first sealing structure is provided around the opening of the connecting groove, and the first A sealing structure includes a first groove provided on the adapter block or the cover, and a first sealing ring provided in the first groove.
7. The compressor according to claim 6, wherein a second sealing structure is provided between the adapter block and the fixed scroll, and the second sealing structure is provided around the opening of the connection hole; The second sealing structure includes a second groove provided on the connecting block or the fixed scroll, and a second sealing ring provided in the second groove.
8. The compressor according to claim 1, wherein the supplementary air through hole is provided corresponding to the intermediate pressure region of the compression chamber.
9. An air conditioning system, characterized in that the air conditioning system includes the compressor according to any one of claims 1-8.
10. An automobile, characterized in that the automobile includes the air conditioning system of claim 9.