Pump components, compressors and air conditioning equipment

Abstract

The present invention discloses a pump body assembly, a compressor and an air-conditioning device, and relates to the technical field of compressors, wherein the pump body assembly adds a first air storage chamber in a secondary cylinder body, and sets a buffer channel connected to an air intake port of the secondary cylinder body, limits the ratio range between the volume V1 of the first air storage chamber and the volume V2 of the secondary compression chamber (0.01≤V1 / V2≤0.22), and limits the ratio range between the diameter d of the buffer channel and the diameter D of the second air intake port (0.15≤d / D≤1), thereby effectively reducing the pulsation and impact inside the compressor by adding a buffer channel connected to the air intake port in the secondary cylinder body, improving the balance between the gas flow and the pressure, thereby improving the overall performance and stability of the compressor, reducing energy consumption and maintenance costs, and enhancing the market competitiveness of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a pump body assembly, a compressor and air conditioning equipment. Background Art

[0002] In the compressor system, the pulsation of the first cylinder will directly affect the suction volume and return volume of the second cylinder. When the first cylinder completes the compression process and exhausts, the pulsation of its exhaust (i.e., the periodic changes in pressure and flow) will be transmitted along the pipeline to the suction port of the second cylinder. This pulsation will cause the pressure and flow of the second cylinder to fluctuate periodically during suction.

[0003] Due to the pulsation of the first-stage exhaust, the second-stage cylinder will experience an increase and decrease in the suction volume during the suction process. When the peak of the first-stage exhaust pulsation is reached, the second-stage cylinder may obtain additional gas volume, resulting in a temporary increase in the suction volume; and when the pulsation trough is reached, the suction volume will decrease. The fluctuation of the suction volume will affect the continuity of the second-stage suction, resulting in the limitation of the second-stage suction capacity, which not only reduces the compression efficiency of the compressor and increases energy consumption, but also causes equipment vibration and noise. Summary of the invention

[0004] The main purpose of the present invention is to propose a pump body assembly, a compressor and an air-conditioning equipment, which aims to improve the pulsation situation under specific working conditions by setting a buffer structure, avoid the suction and exhaust pulsation of the compressor, thereby improving the suction stability of the secondary cylinder body, ensuring the compressor capacity, and improving the compressor performance.

[0005] To achieve the above object, the pump body assembly proposed by the present invention includes:

[0006] First-stage cylinder;

[0007] A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel; and

[0008] A partition, the partition is arranged between the first-stage cylinder body and the second-stage cylinder body, the partition has an intermediate cavity, and the second air intake port is connected to the intermediate cavity;

[0009] Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

[0010] In one embodiment, in the radial cross section of the pump body assembly, the cross section of the first air storage cavity is in the shape of a waist hole or a round hole.

[0011] The present invention also provides a pump body assembly, comprising:

[0012] First-stage cylinder;

[0013] A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, wherein the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel;

[0014] a partition, the partition being disposed between the primary cylinder body and the secondary cylinder body, the partition having an intermediate cavity, the second air intake being connected to the intermediate cavity; and

[0015] An upper bearing is arranged above the secondary cylinder body, the upper bearing is provided with a second air storage cavity, and the first air storage cavity is connected to the second air storage cavity;

[0016] Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

[0017] In one embodiment, the upper bearing is further provided with an enthalpy spray port, and the enthalpy spray port is communicated with the second air storage chamber.

[0018] The present invention also provides a pump body assembly, comprising:

[0019] First-stage cylinder;

[0020] A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel; and

[0021] A partition, the partition is arranged between the first cylinder body and the second cylinder body; the partition has an intermediate cavity connected to the second air inlet and a third air storage cavity arranged beside the intermediate cavity, and the third air storage cavity is connected to the first air storage cavity;

[0022] Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

[0023] In one embodiment, the pump assembly further comprises an upper bearing disposed above the secondary cylinder, the upper bearing being provided with a second air storage chamber; wherein,

[0024] The second air storage chamber is connected to the third air storage chamber; or, the second air storage chamber and the third air storage chamber are respectively connected to the first air storage chamber.

[0025] In one embodiment, the partition is further provided with an enthalpy spray port, and the enthalpy spray port is communicated with the third air storage chamber.

[0026] The present invention further proposes a compressor, comprising a housing, a pump body assembly arranged on the housing, and a motor assembly connected to the crankshaft of the pump body assembly, wherein the pump body assembly is the pump body assembly of any of the above schemes.

[0027] In one embodiment, the compressor further includes an enthalpy increasing component, and the pump body component is further provided with an enthalpy increasing port, and the enthalpy increasing component is connected to the pump body component via the enthalpy increasing port.

[0028] The present invention also provides an air conditioning device, including the compressor as described above.

[0029] The technical solution of the present invention adopts the method of adding a first gas storage chamber in the secondary cylinder body and setting a buffer channel connected to the air intake port of the secondary cylinder body. By limiting the ratio range between the volume V1 of the first gas storage chamber and the volume V2 of the secondary compression chamber (0.01≤V1 / V2≤0.22), and limiting the ratio range between the diameter d of the buffer channel and the diameter D of the second air intake port (0.15≤d / D≤1), the first gas storage chamber has the function of storing and regulating gas. The first gas storage chamber is located on the cavity wall of the secondary compression chamber and is connected to the second air intake port through the buffer channel. During the compression process, it can store a part of the gas and release it when necessary to adjust the gas flow entering the secondary compression chamber; by storing and releasing gas, the first gas storage chamber can balance the fluctuation of the gas flow and reduce the pulsation and impact caused by the sharp change of the gas flow. In this way, by adding a buffer channel connected to the air intake port in the secondary cylinder body, the pulsation and impact inside the compressor are effectively reduced, and the balance between the gas flow and pressure is improved, thereby improving the overall performance and stability of the compressor, reducing energy consumption and maintenance costs, and enhancing the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 A schematic structural diagram of an embodiment of a compressor provided by the present invention;

[0032] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0033] Figure 3 A schematic structural diagram of another embodiment of a compressor provided by the present invention;

[0034] Figure 4 This is a schematic structural diagram of another embodiment of the compressor provided by the present invention.

[0035] Description of Figure Numbers:

[0036] 100, first-stage cylinder;

[0037] 200, secondary cylinder body; 210, secondary compression chamber; 220, second air inlet; 230, first air storage chamber; 240, buffer channel;

[0038] 300, upper bearing; 310, second air storage chamber;

[0039] 400, partition; 410, third air storage chamber;

[0040] 500. Spray enthalpy outlet.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The present invention proposes a pump body assembly, which optimizes the suction structure of the secondary cylinder and sets a buffer structure to improve the pulsation under specific working conditions, avoid the suction and exhaust pulsation of the compressor, thereby improving the suction stability of the secondary cylinder, ensuring the compressor capacity, and improving the compressor performance.

[0046] Please refer to Figure 1 and Figure 2 In the first embodiment of the present invention, the pump body assembly is used in a rotary compressor. It can be understood that the pump body assembly refers to the overall structure of the compressor including a compression cylinder, a partition 400, a bearing, a muffler and other components, which is used to achieve gas compression.

[0047] The pump body assembly includes a primary cylinder body 100, a secondary cylinder body 200 and a partition 400. The secondary cylinder body 200 is provided with a secondary compression chamber 210, a second air inlet 220 connected to the secondary compression chamber 210, and a first air storage chamber 230 provided on the cavity wall of the secondary compression chamber 210 and connected to the second air inlet 220. The cavity wall of the secondary compression chamber 210 is also provided with a buffer channel 240, and the first air storage chamber 230 is connected to the second air inlet 220 through the buffer channel 240; the partition 400 is provided between the primary cylinder body 100 and the secondary cylinder body 200, and the partition 400 has an intermediate cavity, and the second air inlet 220 is connected to the intermediate cavity;

[0048] Among them, the volume of the first air storage chamber 230 is V1, the volume of the secondary compression chamber 210 is V2, the diameter of the buffer channel 240 is d, and the diameter of the second air intake port 220 is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

[0049] The first-stage cylinder 100 is the starting part of the pump assembly, which is usually used for preliminary compression of gas. The first-stage cylinder 100 includes a corresponding compression chamber, an air inlet, an air outlet, etc.

[0050] The secondary cylinder 200 is responsible for further compressing the gas. The primary cylinder 100 and the secondary cylinder 200 are also provided with sliding vanes, which are cavities in the partition cylinders. The shapes and sizes of the sliding vanes are usually designed according to the performance and requirements of the compressor.

[0051] The second air intake port 220 is the entrance for gas to enter the secondary compression chamber 210 from the primary cylinder 100 or the outside. It is usually connected to the middle cavity on the partition 400 to ensure that the gas can smoothly enter the secondary compression chamber 210; the first air storage chamber 230 is located on the cavity wall of the secondary compression chamber 210, and is connected to the second air intake port 220 through the buffer channel 240. The first air storage chamber 230 is used to store and adjust the gas flow entering the secondary compression chamber 210 to reduce pulsation and impact during the compression process. The buffer channel 240 is a channel connecting the first air storage chamber 230 and the second air intake port 220.

[0052] During the operation of the pump assembly, the gas first enters the primary cylinder 100 for preliminary compression. Then, the regulated and distributed gas enters the second air inlet 220 of the secondary cylinder 200 through the intermediate cavity on the partition 400. The gas is further compressed in the secondary compression chamber 210. The first gas storage chamber 230 and the buffer channel 240 play a role of regulation and buffering during the compression process to reduce pulsation and impact and improve the performance and stability of the compressor.

[0053] It can be understood that the first gas storage chamber 230 has the function of storing and regulating gas. The first gas storage chamber 230 is located on the cavity wall of the secondary compression chamber 210 and is connected to the second air inlet 220 through the buffer channel 240. During the compression process, it can store a portion of gas and release it when needed to regulate the gas flow entering the secondary compression chamber 210; by storing and releasing gas, the first gas storage chamber 230 can balance the fluctuation of gas flow and reduce the pulsation and impact caused by the rapid change of gas flow.

[0054] The buffer channel 240 can reduce the resistance and loss of gas during the flow process; when the gas enters the first air storage chamber 230 through the buffer channel 240, the buffer channel 240 can absorb and disperse the pulsation and impact energy in the gas flow, which helps to reduce the vibration and noise inside the compressor and improve the running stability and comfort of the equipment.

[0055] The volume of the first air storage chamber 230 is related to the displacement of the secondary cylinder 200, and changes according to the displacement in order to achieve a buffering effect. When the ratio of V1 / V2 is between 0.01 and 0.22, the first air storage chamber 230, V1 can store an appropriate amount of gas. During the compression process, this part of the gas can be used as a "buffer reservoir" to be released or supplemented according to the needs of the secondary compression chamber 210, V2, thereby adjusting the gas flow entering the secondary compression chamber 210. If V1 is too small, it may not provide sufficient buffering effect; if V1 is too large, it may increase unnecessary energy consumption and complexity.

[0056] When the ratio of the diameter of the buffer channel 240 to the diameter of the second air inlet 220 is between 0.15 and 1, it can ensure that the gas enters the secondary compression chamber 210 through the buffer channel 240 at a stable speed and flow rate. This design helps to reduce the unevenness and pulsation of gas flow. If d is too small, the gas flow may be obstructed, and energy consumption and vibration may be increased; if d is too large, the manufacturing cost and complexity may be increased, and the buffering effect may be reduced.

[0057] For the measurement of the volumes of V1 and V2, fluids (such as water, air, etc.) can be used to measure the volumes of the air storage chamber and the compression chamber; or, when the shapes of the air storage chamber and the compression chamber are regular (such as cylindrical, rectangular, etc.), measuring tools can be used directly to measure the dimensions and calculate the volume based on geometric formulas.

[0058] Reference Figure 3 and Figure 4 In the second embodiment of the present invention, the difference between the pump assembly and the first embodiment is that in the second embodiment, an air storage chamber is also provided in the upper bearing 300. As described above, the volume of the air storage chamber is related to the displacement of the secondary cylinder 200. Thus, by additionally providing a second air storage chamber 310 in the upper bearing 300, and the second air storage chamber 310 is connected with the first air storage chamber 230, the overall volume of the air storage chamber is increased, thereby adjusting the gas flow entering the secondary compression chamber 210, and better optimizing the displacement of the secondary cylinder 200.

[0059] Specifically, the secondary cylinder body 200 is provided with a secondary compression chamber 210, a second air inlet 220 connected to the secondary compression chamber 210, and a first air storage chamber 230 provided on the cavity wall of the secondary compression chamber 210 and connected to the second air inlet 220. The cavity wall of the secondary compression chamber 210 is also provided with a buffer channel 240, and the first air storage chamber 230 is connected to the second air inlet 220 through the buffer channel 240; the partition plate 400 is provided between the primary cylinder body 100 and the secondary cylinder body 200, and the partition plate 400 has an intermediate cavity, and the second air inlet 220 is connected to the intermediate cavity; the upper bearing 300 is provided with a second air storage chamber 310, and the first air storage chamber 230 is connected to the second air storage chamber 310;

[0060] Among them, the volume of the first air storage chamber 230 is V1, the volume of the secondary compression chamber 210 is V2, the diameter of the buffer channel 240 is d, and the diameter of the second air intake port 220 is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

[0061] It is not difficult to understand that the addition of the second air storage chamber 310 increases the total volume of the entire air storage system, which means that the system can store more gas. Due to the increase in the air storage capacity, the system can better absorb and balance pressure fluctuations, thereby reducing the pressure instability inside the compressor and reducing vibration and noise.

[0062] The shape and size of the second gas storage chamber 310 are not limited. It can be understood that the second embodiment is the same as the first embodiment. During the compression process, a portion of the gas can be stored and released when needed to adjust the gas flow entering the secondary compression chamber 210; by storing and releasing gas, the fluctuation of the gas flow can be balanced and the pulsation and impact caused by the rapid change of the gas flow can be reduced.

[0063] Reference Figure 4 Furthermore, the upper bearing 300 is also provided with an enthalpy spray port 500, which is connected to the second air storage chamber 310. The enthalpy spray port 500 is connected to the enthalpy increase component, so that the gas can be actively introduced into the compression chamber from the second air storage chamber 310, the first air storage chamber 230, the buffer channel 240, and the inhaled gas from the second air inlet 220, which helps to improve the gas compression process and improve the compression efficiency. The enthalpy spray port 500 can be used as a means of adjustment to help the compressor maintain a more stable operating state when facing different working conditions and requirements.

[0064] Figure 3 and Figure 4In the third embodiment of the present invention, the difference between the pump assembly and the first embodiment is that in the third embodiment, an air storage chamber is also provided in the partition 400. As described above, the volume of the air storage chamber is related to the displacement of the secondary cylinder 200. Thus, by additionally providing a third air storage chamber 410 in the partition 400, and the third air storage chamber 410 is connected with the first air storage chamber 230, the total volume of the air storage chamber is increased, thereby adjusting the gas flow entering the secondary compression chamber 210, and better optimizing the displacement of the secondary cylinder 200.

[0065] It is not difficult to understand that the addition of the third air storage chamber 410 increases the total volume of the entire air storage system, which means that the system can store more gas. Due to the increase in the air storage capacity, the system can better absorb and balance pressure fluctuations, thereby reducing the pressure instability inside the compressor and reducing vibration and noise.

[0066] The shape and size of the third gas storage chamber 410 are not limited. It can be understood that the third embodiment is the same as the first embodiment. During the compression process, a portion of the gas can be stored and released when needed to adjust the gas flow entering the secondary compression chamber 210; by storing and releasing gas, the fluctuation of the gas flow can be balanced and the pulsation and impact caused by the rapid change of the gas flow can be reduced.

[0067] In the third embodiment, further, a second air storage chamber 310 may be further provided in the upper bearing 300, and the total volume of the air storage chamber may be increased in the same manner; in one embodiment, the second air storage chamber 310 is connected to the third air storage chamber 410. In one embodiment, the second air storage chamber 310 and the third air storage chamber 410 are respectively connected to the first air storage chamber 230.

[0068] Similarly, in the second embodiment, a third air storage chamber 410 may also be provided in the partition plate 400 .

[0069] Furthermore, the partition 400 is also provided with an enthalpy spray port 500, which is connected to the third gas storage chamber 410. The enthalpy spray port 500 is connected to the enthalpy increase component, so that the gas can be actively introduced from the third gas storage chamber 410, the first gas storage chamber 230, the buffer channel 240, and the gas sucked from the second air inlet 220 into the compression chamber, which helps to improve the gas compression process and improve the compression efficiency. The enthalpy spray port 500 can be used as a means of adjustment to help the compressor maintain a more stable operating state when facing different working conditions and requirements.

[0070] Further, in the first embodiment or the second embodiment or the third embodiment, on the radial cross section of the pump body assembly, the cross section of the first air storage cavity 230 is a waist hole or a round hole. The shape of the first air storage cavity 230 is set to be a circle or a waist hole, which can better ensure the sealing performance and better utilize the space to ensure the volume of the first air storage cavity 230 (relative volume is the largest) compared to other shapes, which is determined according to the internal structure of the compressor.

[0071] In summary, regardless of the first embodiment, the second embodiment and the third embodiment, the technical solution of the present invention, by adding a first air storage chamber 230 in the secondary cylinder body 200, and setting a buffer channel 240 connected to the air intake port of the secondary cylinder body 200, by limiting the ratio range between the volume V1 of the first air storage chamber 230 and the volume V2 of the secondary compression chamber 210 (0.01≤V1 / V2≤0.22), and limiting the ratio range between the diameter d of the buffer channel 240 and the diameter D of the second air intake port 220 (0.15≤d / D≤1), effectively reduces the pulsation and impact inside the compressor, improves the balance between the gas flow and pressure, thereby improving the overall performance and stability of the compressor, reducing energy consumption and maintenance costs, and enhancing the market competitiveness of the product.

[0072] The present invention also proposes a compressor, which includes a housing, a pump body assembly all arranged on the housing, and a motor assembly connected to the crankshaft of the pump body assembly, wherein the pump body assembly is the pump body assembly in the first embodiment, the second embodiment and the third embodiment, and the specific structure of the pump body assembly refers to the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the compressor also includes an enthalpy increase component, and the pump body assembly is also provided with an enthalpy increase port, and the enthalpy increase component is connected to the pump body assembly through the enthalpy increase port.

[0073] In addition to the enthalpy injection port 500 in the first embodiment, the second embodiment and the third embodiment, the enthalpy injection port 500 can also be set in the first-stage cylinder. The enthalpy injection process can be summarized as gas suction, steam injection, mixed gas compression, condensation and heat release. It is roughly that the compressor receives the gas (energy A) transmitted from the evaporator from the air intake port and starts preliminary compression. During the compression process, by opening the jet enthalpy increase air supply circuit, steam (usually generated by the flash evaporator) is introduced into the compressor. These steams are mixed with the gas (energy A) being compressed to form a new gas mixture (energy B). The mixed gas (energy B) continues to be compressed by the compressor until the required pressure and temperature are reached. The compressed gas enters the condenser, exchanges heat with water or other cooling media, releases heat and condenses into liquid.

[0074] The enthalpy increase component usually includes a refrigerant injection device, a control valve and other components, which are used to inject the refrigerant into the compression chamber of the pump assembly to achieve the enthalpy increase effect. Through enthalpy injection, the compressor can achieve a more efficient compression process and reduce energy loss. In addition, in low temperature environments, enthalpy injection technology can improve the heating capacity of the compressor and ensure stable operation of the system.

[0075] The present invention also provides an air conditioning device, which includes the above compressor. The air conditioning device can be a household air conditioner, a commercial air conditioner, a car air conditioner, etc. It provides cooling and heating services for families to meet people's demand for comfortable indoor temperature.

[0076] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pump assembly, characterized in that: include: First-stage cylinder; A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel; and A partition, the partition is arranged between the first-stage cylinder body and the second-stage cylinder body, the partition has an intermediate cavity, and the second air intake port is connected to the intermediate cavity; Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

2. The pump assembly according to claim 1, characterized in that: On the radial cross section of the pump body assembly, the cross section of the first air storage cavity is in the shape of a waist hole or a round hole.

3. A pump assembly, characterized in that: include: First-stage cylinder; A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, wherein the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel; A partition, the partition is arranged between the first-stage cylinder body and the second-stage cylinder body, the partition has an intermediate cavity, and the second air intake port is connected to the intermediate cavity; and An upper bearing is arranged above the secondary cylinder body, the upper bearing is provided with a second air storage cavity, and the first air storage cavity is connected to the second air storage cavity; Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

4. The pump assembly according to claim 3, characterized in that: On the radial cross section of the pump body assembly, the cross section of the first air storage cavity is in the shape of a waist hole or a round hole.

5. The pump assembly according to claim 3, characterized in that: The upper bearing is also provided with an enthalpy spray port, and the enthalpy spray port is communicated with the second air storage chamber.

6. A pump assembly, characterized in that: include: First-stage cylinder; A secondary cylinder body, wherein the secondary cylinder body is provided with a secondary compression chamber, a second air intake port connected to the secondary compression chamber, and a first air storage chamber provided on the chamber wall of the secondary compression chamber and connected to the second air intake port, the chamber wall of the secondary compression chamber is further provided with a buffer channel, and the first air storage chamber is connected to the second air intake port through the buffer channel; and A partition, the partition is arranged between the first cylinder body and the second cylinder body; the partition has an intermediate cavity connected to the second air inlet and a third air storage cavity arranged beside the intermediate cavity, and the third air storage cavity is connected to the first air storage cavity; Among them, the volume of the first air storage chamber is V1, the volume of the secondary compression chamber is V2, the diameter of the buffer channel is d, and the diameter of the second air intake port is D, wherein V1 and V2 satisfy the relationship 0.01≤V1 / V2≤0.22; d and D satisfy 0.15≤d / D≤1.

7. The pump assembly according to claim 6, characterized in that The pump assembly further comprises an upper bearing disposed above the secondary cylinder, wherein the upper bearing is provided with a second air storage cavity; wherein, The second air storage chamber is connected to the third air storage chamber; or, the second air storage chamber and the third air storage chamber are respectively connected to the first air storage chamber.

8. The pump assembly according to claim 6, characterized in that: On the radial cross section of the pump body assembly, the cross section of the first air storage cavity is in the shape of a waist hole or a round hole.

9. The pump assembly according to claim 6, characterized in that: The partition plate is also provided with an enthalpy spray port, and the enthalpy spray port is communicated with the third air storage chamber.

10. A compressor, characterized in that: It includes a housing, a pump body assembly arranged on the housing, and a motor assembly connected to the crankshaft of the pump body assembly, wherein the pump body assembly is the pump body assembly according to claim 1 or 2, or the pump body assembly according to any one of claims 3 to 5, or the pump body assembly according to any one of claims 6 to 9.

11. The compressor according to claim 10, characterized in that The compressor further comprises an enthalpy increasing component, and the pump body component is further provided with an enthalpy increasing port, and the enthalpy increasing component is connected to the pump body component via the enthalpy increasing port.

12. An air conditioning device, characterized in that: Comprising a compressor as claimed in claim 10 or 11.

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