A pump body and a compressor having the same

Abstract

The present invention provides a pump body and a compressor having the same, wherein the pump body comprises a first cylinder, a second cylinder and a partition, the first cylinder has an upper cavity, and the second cylinder has a lower cavity; the partition air storage cavity is communicated with the upper cavity and the lower cavity respectively; the pump body also comprises a crankshaft, the upper eccentric circle of the crankshaft is arranged correspondingly to the upper roller and the upper sliding plate, and the lower eccentric circle of the crankshaft is arranged correspondingly to the lower roller and the lower sliding plate; when the above pump body is applied to the compressor, the refrigerant in the liquid distributor enters the partition air storage cavity, and then enters the upper cavity and the lower cavity respectively, the pump body is exhausting and inhaling air at any time, the exhaust volume is increased, the upper eccentric circle and the lower eccentric circle of the crankshaft are coaxially arranged, and the assembly with the upper roller and the lower roller is convenient, the strength of the crankshaft is guaranteed, and the reliability is high; it is conducive to the miniaturization and flattening design of the compressor, and the volumetric efficiency and energy efficiency are improved; the first cylinder and the second cylinder are not exhausted at the same time, which reduces the pressure pulsation and shaft system movement of the compressor caused by exhaust, and reduces the noise of the compressor.

Description

Technical Field

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

[0002] Twin-cylinder compressors are widely used in many occasions to output large-displacement refrigerant by arranging the upper and lower eccentric circles of the crankshaft in a 180° phase difference. When a large-displacement compressor is reduced in size or a small compressor is used to achieve a large displacement, it is inevitable to increase the eccentricity of the crankshaft. Due to the matching relationship between the eccentric circle and the roller, the large-size eccentricity will make it impossible for the roller to be inserted into the crankshaft. In the prior art, the roller is inserted into the crankshaft by reducing the crankshaft diameter or increasing the distance between the two eccentric circles. However, this will make the crankshaft insufficient in strength, reduce reliability, increase the size of the partition, and increase costs. Summary of the invention

[0003] In view of this, the present invention provides a pump body and a compressor having the same, so as to solve the problems of small compressor displacement, insufficient crankshaft strength and large required partition size in the prior art.

[0004] The present invention provides a pump body, comprising:

[0005] A first cylinder having an upper cavity and a first air intake hole communicating with the upper cavity;

[0006] A second cylinder having a lower cavity and a second air intake hole communicating with the lower cavity;

[0007] A partition is arranged between the first cylinder and the second cylinder, and forms an air storage cavity, wherein the air storage cavity has an air inlet, a first air outlet and a second air outlet connected to the air storage cavity; the first air outlet is connected to the first air intake hole; the second air outlet is connected to the second air intake hole;

[0008] External air enters the air storage chamber through the air inlet, and the air in the air storage chamber enters the upper chamber through the first air outlet and the first air inlet, and enters the lower chamber through the second air outlet and the second air inlet;

[0009] The first air intake hole and the second air intake hole are arranged at a phase difference of 180° on both sides of the axis of the pump body; the first air outlet hole and the second air outlet hole are arranged at a phase difference of 180° on both sides of the axis of the pump body.

[0010] The pump body further comprises a crankshaft, wherein the crankshaft comprises an upper eccentric circle and a lower eccentric circle which are arranged on the same side of the crankshaft, and the deflection axis of the upper eccentric circle coincides with the deflection axis of the lower eccentric circle.

[0011] Further optionally, the partition includes an upper partition and a lower partition, the upper partition is formed with the first air outlet, and the upper end surface of the upper partition is in contact with the lower end surface of the first cylinder; the lower partition is formed with the second air outlet, and the lower end surface of the lower partition is in contact with the upper end surface of the second cylinder.

[0012] Further optionally, the upper partition is formed with an upper air storage tank opening toward the lower partition, and the upper air storage tank is communicated with the first air outlet; the lower partition is formed with a lower air storage tank opening toward the upper partition, and the lower air storage tank is communicated with the second air outlet; the upper air storage tank and the lower air storage tank form the air storage cavity.

[0013] Further optionally, the pump body further comprises an upper roller and a lower roller, the upper roller is sleeved on the upper eccentric circle, and the lower roller is sleeved on the lower eccentric circle; the upper roller is located in the upper cavity, and the lower roller is located in the lower cavity.

[0014] Further optionally, the first cylinder is formed with an upper slide groove, and the second cylinder is formed with a lower slide groove, and the upper slide groove and the lower slide groove are arranged at a phase difference of 180° on both sides of the axis of the pump body.

[0015] Further optionally, the pump body further comprises an upper slide matched with the upper roller and a lower slide matched with the lower roller; the upper slide slides along the upper slide groove under the action of the spring and / or the upper roller, and the lower slide slides along the lower slide groove under the action of the spring and / or the lower roller;

[0016] When the crankshaft rotates, the sliding direction of the upper sliding plate along the upper sliding groove is opposite to the sliding direction of the lower sliding plate along the lower sliding groove.

[0017] Further optionally, the upper cavity has an upper exhaust hole, the lower cavity has a lower exhaust hole, and the upper exhaust hole and the lower exhaust hole are arranged at a phase difference of 180° on both sides of the axis of the pump body.

[0018] The present invention also provides a compressor, comprising a liquid separator and a pump body as described in any one of the above items; the liquid separator is connected to the air inlet of the partition through an air inlet pipe; the refrigerant in the liquid separator enters the air storage cavity of the partition through the air inlet pipe and the air inlet, and then enters the upper cavity and the lower cavity respectively through the first air outlet and the second air outlet.

[0019] The pump body provided by the present invention comprises a first cylinder, a second cylinder and a partition, wherein the partition is arranged between the first cylinder and the second cylinder, and the air storage cavity of the partition is connected with the upper cavity of the first cylinder and the lower cavity of the second cylinder; the deflection axes of the upper eccentric circle and the lower eccentric circle of the crankshaft coincide with each other; the upper eccentric circle, the upper roller and the upper sliding plate are arranged correspondingly, and the lower eccentric circle, the lower roller and the lower sliding plate are arranged correspondingly; when the above-mentioned pump body is applied to a compressor, the compressor is running, and the refrigerant in the liquid distributor enters the air storage cavity of the partition, and then enters the upper cavity and the lower cavity through their respective suction holes. The upper and lower sliding vanes of the cavity slide in different directions. The pump body is exhausting and inhaling air at any time, which increases the exhaust volume. The upper eccentric circle and the lower eccentric circle of the crankshaft are coaxially arranged, and the roller and the crankshaft are easy to assemble, which ensures the strength of the crankshaft and has high reliability. It is conducive to the miniaturization design of the compressor, reduces costs, realizes the flat design of compressors with the same displacement, improves volumetric efficiency, and improves the energy efficiency of the compressor. At the same time, the first cylinder and the second cylinder are not exhausted at the same time, which reduces the pressure pulsation and shaft system movement caused by exhaust in the compressor, and reduces the noise of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 A schematic diagram of the structure of an embodiment of the present invention in which the first cylinder, the second cylinder and the partition are assembled together;

[0023] Figure 2a A schematic structural diagram of a first cylinder embodiment provided by the present invention;

[0024] Figure 2b A schematic structural diagram of a second cylinder embodiment provided by the present invention;

[0025] Figure 3a and Figure 3b A schematic diagram of the structure of a partition embodiment provided by the present invention;

[0026] Figure 4A schematic diagram of the structure of a crankshaft embodiment provided by the present invention;

[0027] Figure 5 A schematic diagram of the structure of a compressor embodiment provided by the present invention;

[0028] In the figure:

[0029] 1-first cylinder; 11-upper cavity; 12-first air intake hole; 13-upper slide;

[0030] 2-second cylinder; 21-lower cavity; 22-second air inlet; 23-lower slide groove;

[0031] 3-partition plate; 31-upper partition plate; 311-upper air storage tank; 312-first air outlet; 32-lower partition plate; 321-lower air storage tank; 322-second air outlet; 33-air storage cavity; 34-air inlet;

[0032] 4-crankshaft; 41-upper eccentric circle; 42-lower eccentric circle;

[0033] 5- roller; 51- upper roller; 52- lower roller;

[0034] 61-upper slide; 62-lower slide;

[0035] 7-compressor; 71-liquid distributor; 711-intake pipe; 72-upper flange; 73-lower flange. DETAILED DESCRIPTION

[0036] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0037] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the situation of including at least one.

[0038] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0040] In order to increase the displacement of the existing compressor, it is inevitable to increase the eccentricity of the crankshaft, but this will make it impossible for the roller to be inserted into the crankshaft. Reducing the crankshaft diameter or increasing the distance between the two eccentric circles will make the crankshaft insufficient in strength and reduce reliability. The present invention proposes a pump body, including a first cylinder, a second cylinder and a partition. The external gas enters the air storage chamber through the inlet of the partition, and then enters the first cylinder and the second cylinder respectively through the corresponding suction holes, so that one air storage chamber supplies air to the upper cavity and the lower cavity at the same time, so that the pump body is inhaling and exhausting air at any time, thereby increasing the exhaust volume. The upper eccentric circle and the lower eccentric circle of the crankshaft are arranged with their axes overlapping, which ensures the strength of the crankshaft while facilitating the assembly of the rollers and the eccentric circles, thereby improving the volumetric efficiency. The first cylinder and the second cylinder are not exhausted at the same time, thereby reducing the noise of the compressor.

[0041] Example 1

[0042] <Pump body>

[0043] like Figure 1 , Figure 2a and Figure 2bAs shown, the present embodiment provides a pump body, including a first cylinder 1, a second cylinder 2 and a partition 3; the first cylinder 1 has an upper cavity 11 and a first air intake hole 12 connected to the upper cavity 11; specifically, the first air intake hole 12 is located at the lower end surface of the first cylinder 1; the second cylinder 2 has a lower cavity 21 and a second air intake hole 22 connected to the lower cavity 21; specifically, the second air intake hole 22 is located at the upper end surface of the second cylinder 2; the partition 3 is arranged between the first cylinder 1 and the second cylinder 2, and an air storage cavity 33 is formed, and the air storage cavity 33 has an air inlet 34 connected to the air storage cavity 33, a first air outlet 312 and a second air outlet 322; the first air outlet 312 and the second air outlet 322 are relatively arranged on both sides of the air storage cavity 33 and are separated from each other; The axis of the first air intake hole 12 and the axis of the second air intake hole 22 are respectively located on both sides of the pump body; the first air outlet hole 312 and the first air intake hole 12 are located in correspondence and communication; the second air outlet hole 322 and the second air intake hole 22 are located in correspondence and communication; the gas in the air storage chamber 33 enters the upper cavity 11 upward through the first air outlet hole 312 and the first air intake hole 12, and enters the lower cavity 21 downward through the second air outlet hole 322 and the second air intake hole 22, so that one air storage chamber 33 supplies gas to two cylinders respectively;

[0044] External gas enters the air storage chamber 33 through the air inlet 34, and the gas in the air storage chamber 33 enters the upper cavity 11 through the first air outlet 312 and the first air intake hole 12, and enters the lower cavity 21 through the second air outlet 322 and the second air intake hole 22, so that the first cylinder 1 and the second cylinder 2 do not inhale or exhaust at the same time, thereby maintaining the continuous exhaust volume of the pump body while increasing the exhaust volume of the pump body.

[0045] Preferably, the first air intake hole 12 and the second air intake hole 22 are arranged at a phase difference of 180° on both sides of the axis of the pump body; the first air outlet hole 312 and the second air outlet hole 322 are arranged at a phase difference of 180° on both sides of the axis of the pump body; the first air intake hole 12 and the first air outlet hole 312 correspond in position, and the second air intake hole 22 and the second air outlet hole 322 correspond in position. At any time, only one of the first cylinder 1 and the second cylinder 2 is inhaling and the other is exhausting, thereby ensuring the continuity of air intake and exhaust of the pump body.

[0046] like Figure 4 As shown, the pump body also includes a crankshaft 4, which includes an upper eccentric circle 41 and a lower eccentric circle 42 arranged on the same side of the crankshaft 4; in order to facilitate the assembly of the roller and the crankshaft 4 without increasing the size of the crankshaft, the deflection axis of the upper eccentric circle 41 and the deflection axis of the lower eccentric circle 42 coincide, so that the roller can be assembled on the upper and lower eccentric circles in one direction. The crankshaft 4 is rotatably arranged in the inner holes of the upper cavity 11, the lower cavity 21 and the partition 3.

[0047] like Figure 3a and Figure 3bAs shown, in another embodiment, the partition 3 includes an upper partition 31 and a lower partition 32, the upper partition 31 is formed with a first air outlet 312, specifically the upper end surface of the upper partition 31; the upper end surface of the upper partition 31 is in contact with the lower end surface of the first cylinder 1, the first air outlet 312 is axially directed toward the first cylinder 1, and is correspondingly communicated with the first air intake hole 12; the lower partition 32 is formed with a second air outlet 322, specifically the lower end surface of the lower partition 32; the lower end surface of the lower partition 32 is in contact with the upper end surface of the second cylinder 2, the second air outlet 322 is axially directed toward the second cylinder 2, and is correspondingly communicated with the second air intake hole 22;

[0048] The upper partition 31 is formed with an upper air storage tank 311 whose opening is toward the lower partition 32, and the upper air storage tank 311 is communicated with the first air outlet 312; the lower partition 32 is formed with a lower air storage tank 321 whose opening is toward the upper partition 31, and the lower air storage tank 321 is communicated with the second air outlet 322; the upper air storage tank 311 and the lower air storage tank 321 form an air storage chamber 33; the first air outlet 312 and the second air outlet 322 are relatively arranged on both sides of the air storage chamber 33, and correspondingly, the axis of the first air intake hole 12 and the axis of the second air intake hole 22 are respectively located on both sides of the pump body, so that the first cylinder 1 and the second cylinder 2 do not inhale or exhaust at the same time, thereby maintaining the continuous exhaust volume of the pump body while increasing the exhaust volume of the pump body.

[0049] In this embodiment, the upper cavity 11 has an upper exhaust hole, and the lower cavity 21 has a lower exhaust hole. The upper exhaust hole and the lower exhaust hole are arranged at a phase difference of 180° on both sides of the axis of the pump body, so that the first cylinder 1 and the second cylinder 2 are not exhausted at the same time at any time.

[0050] Furthermore, the pump body also includes an upper roller 51 and a lower roller 52. The upper roller 51 is sleeved on the upper eccentric circle 41, and the lower roller 52 is sleeved on the lower eccentric circle 42; the upper roller 51 is located in the upper cavity 11, and the lower roller 52 is located in the lower cavity 21; the rollers rotate with the crankshaft 4 to realize the suction and exhaust of the upper cavity 11 and the lower cavity 21.

[0051] like Figure 1 , Figure 2a and Figure 2bAs shown, the first cylinder 1 is formed with an upper slide groove 13, and the second cylinder 2 is formed with a lower slide groove 23. Preferably, the upper slide groove 13 and the lower slide groove 23 are arranged at a phase difference of 180° on both sides of the axis of the pump body. The pump body also includes an upper slide plate 61 cooperating with the upper roller 51 and a lower slide plate 62 cooperating with the lower roller 52; one end of the upper slide plate 61 contacts the upper roller 51, and the other end is connected to the spring, and is arranged in the upper slide groove 13. Under the action of the spring and / or the upper roller 51, the upper slide plate 61 slides along the upper slide groove 13; the upper slide plate 61 divides the upper cavity 11 into an upper air intake cavity and an upper air exhaust cavity, the upper air intake cavity is connected to the first air intake hole, and the upper air exhaust cavity is connected to the upper air exhaust hole. The upper slide plate 61 slides in the upper slide groove 13 with the rotation of the upper roller 51, and the gas enters the upper air exhaust cavity from the gas storage cavity 33 through the first air outlet hole 312 and the first air intake hole 12, and the gas in the lower air exhaust cavity is discharged through the upper air exhaust hole;

[0052] One end of the lower slide 62 contacts the lower roller 52, and the other end is connected to the spring and is arranged in the lower groove 23. Under the action of the spring and / or the lower roller 52, the lower slide 62 slides along the lower groove 23; the lower slide 62 divides the lower cavity 21 into a lower air intake cavity and a lower air exhaust cavity, the lower air intake cavity is communicated with the second air intake hole 22, and the lower air exhaust cavity is communicated with the lower air exhaust hole. The lower slide 62 slides in the lower groove 23 as the lower roller 52 rotates, and the gas enters the lower exhaust cavity from the gas storage cavity 33 through the second air outlet hole 322 and the second air intake hole 22, and the gas in the lower exhaust cavity is discharged through the lower air exhaust hole.

[0053] Since the deflection axis of the upper eccentric circle 41 coincides with the deflection axis of the lower eccentric circle 42, the corresponding deflection axis of the upper roller 51 coincides with the deflection axis of the lower roller 52, and at the same time, the upper slide groove 13 and the lower slide groove 23 are arranged with a phase difference of 180° on both sides of the axis of the pump body; when the crankshaft 4 rotates, the sliding direction of the upper slide plate 61 along the upper slide groove 13 is opposite to the sliding direction of the lower slide plate 62 along the lower groove 23.

[0054] Specifically, when the crankshaft 4 rotates, the upper roller 51 drives the upper slide plate 61 to slide in the upper slide groove 13, and the lower roller 52 drives the lower slide plate 62 to slide in the lower slide groove 23; at any time, when the upper slide plate 61 moves radially outward toward the first cylinder 1, the lower slide plate 62 moves radially inward toward the second cylinder 2, at this time, the upper exhaust chamber of the first cylinder 1 is exhausted, and the gas in the gas storage chamber 33 enters the lower intake chamber of the second cylinder 2 through the second outlet hole 322 and the second intake hole 22;

[0055] At any moment, when the upper slide 61 moves radially inwardly toward the first cylinder 1, the lower slide 62 moves radially outwardly toward the second cylinder 2. At this time, the upper exhaust chamber of the first cylinder 1 inhales air, and the gas in the air storage chamber 33 enters the upper intake chamber of the first cylinder 1 through the first air outlet 312 and the first intake hole 12, and the lower exhaust chamber of the second cylinder 2 exhausts air.

[0056] <Compressor>

[0057] like Figure 5 As shown, this embodiment provides a compressor 7, having a liquid separator 71 and a pump body as described in any one of the above items; the liquid separator 71 is arranged on the left side of the compressor 7, and is connected to the air inlet 34 of the partition 3 through the air inlet pipe 711; the pump body is arranged between the upper flange 72 and the lower flange 73 of the compressor 7; the refrigerant in the liquid separator 71 enters the air storage cavity 33 of the partition 3 through the air inlet pipe 711 and the air inlet 34, and then enters the upper cavity 11 and the lower cavity 21 through the first air outlet 312 and the second air outlet 322, respectively.

[0058] When the crankshaft 4 rotates, the sliding direction of the upper slide plate 61 along the upper slide groove 13 is opposite to the sliding direction of the lower slide plate 62 along the lower slide groove 23;

[0059] Specifically, when the crankshaft 4 rotates, the upper roller 51 drives the upper slide 61 to slide in the upper slide groove 13, and the lower roller 52 drives the lower slide 62 to slide in the lower slide groove 23; at any time, when the upper slide 61 moves radially outward toward the first cylinder 1, the lower slide 62 moves radially inward toward the second cylinder 2, at this time, the refrigerant in the upper exhaust chamber of the first cylinder 1 is discharged, and the refrigerant in the liquid distributor 71 enters the air storage chamber 33 of the partition 3 through the intake pipe 711 and the intake port 34, and then enters the lower intake chamber of the second cylinder 2 through the second outlet hole 322 and the second intake hole 22;

[0060] At any moment, when the upper slide 61 moves radially inward toward the first cylinder 1, the lower slide 62 moves radially outward toward the second cylinder 2. At this time, the refrigerant in the liquid distributor 71 enters the air storage chamber 33 of the partition 3 through the air inlet pipe 711 and the air inlet port 34, and then enters the upper air intake chamber of the first cylinder 1 through the first air outlet hole 312 and the first air intake hole 12, and the refrigerant in the lower air exhaust chamber of the second cylinder 2 is discharged.

[0061] The pump body is exhausting and inhaling air at any time, which increases the exhaust volume. The upper eccentric circle and the lower eccentric circle of the crankshaft 4 are coaxially arranged, and the roller and the crankshaft 4 are easy to assemble, thereby ensuring the strength of the crankshaft and high reliability. This is conducive to the miniaturization design of the compressor, reducing costs, realizing the flat design of compressors with the same displacement, improving volumetric efficiency, and improving the energy efficiency of the compressor. At the same time, the first cylinder and the second cylinder are not exhausted at the same time, which reduces the pressure pulsation and shaft system movement caused by exhaust in the compressor, and reduces the noise of the compressor.

[0062] Example 2

[0063] The present embodiment provides a pump body, including a first cylinder 1 and a second cylinder 2; the first cylinder 1 has an upper cavity 11 and a first air intake hole 12 connected to the upper cavity 11; specifically, the first air intake hole 12 is located on the side of the first cylinder 1; the second cylinder 2 has a lower cavity 21 and a second air intake hole 22 connected to the lower cavity 21; specifically, the second air intake hole 22 is located on the side of the second cylinder 2; external gas enters the upper cavity 11 through the first air intake hole 12, and enters the lower cavity 21 through the second air intake hole 22, without affecting each other.

[0064] The upper cavity 11 has an upper exhaust hole, and the lower cavity 21 has a lower exhaust hole. The upper exhaust hole and the lower exhaust hole are arranged with a phase difference of 180° on both sides of the axis of the pump body, so that the first cylinder 1 and the second cylinder 2 can inhale and exhaust at different times at any time, thereby maintaining the continuous exhaust volume of the pump body while increasing the exhaust volume of the pump body.

[0065] The pump body also includes a crankshaft 4, an upper roller 51 and a lower roller 52. The crankshaft 4 includes an upper eccentric circle 41 and a lower eccentric circle 42 arranged on the same side of the crankshaft 4; the upper roller 51 is sleeved on the upper eccentric circle 41, and the lower roller 52 is sleeved on the lower eccentric circle 42; in order to facilitate the assembly of the roller and the crankshaft 4 without increasing the size of the crankshaft, the deflection axis of the upper eccentric circle 41 and the deflection axis of the lower eccentric circle 42 coincide, so that the roller can be assembled on the upper and lower eccentric circles in one direction; the upper slide 61, the lower slide 62 of the pump body and the upper slide groove 13, the lower slide groove 23 of the first cylinder 1 have the same structure as in Example 1.

[0066] The compressor has a first liquid distributor and a second liquid distributor. The first liquid distributor is connected to the first air intake hole 12 of the first cylinder 1 through a first air intake pipe; the second liquid distributor is connected to the second air intake hole 22 of the second cylinder 2 through a second air intake pipe.

[0067] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A pump body, characterized in that: include: A first cylinder having an upper cavity and a first air intake hole communicating with the upper cavity; A second cylinder having a lower cavity and a second air intake hole communicating with the lower cavity; A partition is arranged between the first cylinder and the second cylinder, and an air storage cavity is formed therein, wherein the air storage cavity has an air inlet, a first air outlet and a second air outlet connected to the air storage cavity; the first air outlet and the second air outlet are arranged on both sides of the air storage cavity opposite to each other, and the first air suction hole and the second air suction hole are correspondingly located on both sides of the axis of the pump body; the first air outlet is connected to the first air suction hole; the second air outlet is connected to the second air suction hole; External air enters the air storage chamber through the air inlet, and the air in the air storage chamber enters the upper chamber through the first air outlet and the first air inlet, and enters the lower chamber through the second air outlet and the second air inlet; The first air intake hole and the second air intake hole are arranged at a phase difference of 180° on both sides of the axis of the pump body; the first air outlet hole and the second air outlet hole are arranged at a phase difference of 180° on both sides of the axis of the pump body; The pump body further comprises a crankshaft, wherein the crankshaft comprises an upper eccentric circle and a lower eccentric circle which are arranged on the same side of the crankshaft, and the deflection axis of the upper eccentric circle coincides with the deflection axis of the lower eccentric circle.

2. The pump body according to claim 1, characterized in that: The partition includes an upper partition and a lower partition, the upper partition is formed with the first air outlet, and the upper end surface of the upper partition is in contact with the lower end surface of the first cylinder; the lower partition is formed with the second air outlet, and the lower end surface of the lower partition is in contact with the upper end surface of the second cylinder.

3. The pump body according to claim 2, characterized in that: The upper partition is formed with an upper air storage tank opening toward the lower partition, and the upper air storage tank is communicated with the first air outlet; the lower partition is formed with a lower air storage tank opening toward the upper partition, and the lower air storage tank is communicated with the second air outlet; the upper air storage tank and the lower air storage tank form the air storage cavity.

4. The pump body according to claim 1, characterized in that: The pump body further comprises an upper roller and a lower roller, wherein the upper roller is sleeved on the upper eccentric circle, and the lower roller is sleeved on the lower eccentric circle; the upper roller is located in the upper cavity, and the lower roller is located in the lower cavity.

5. The pump body according to claim 4, characterized in that: The first cylinder is formed with an upper slide groove, and the second cylinder is formed with a lower slide groove, and the upper slide groove and the lower slide groove are arranged at two sides of the axis of the pump body with a phase difference of 180°.

6. The pump body according to claim 5, characterized in that: The pump body further comprises an upper slide matched with the upper roller and a lower slide matched with the lower roller; the upper slide slides along the upper slide groove under the action of the spring and / or the upper roller, and the lower slide slides along the lower slide groove under the action of the spring and / or the lower roller; When the crankshaft rotates, the sliding direction of the upper sliding plate along the upper sliding groove is opposite to the sliding direction of the lower sliding plate along the lower sliding groove.

7. The pump body according to claim 1, characterized in that: The upper cavity has an upper exhaust hole, and the lower cavity has a lower exhaust hole. The upper exhaust hole and the lower exhaust hole are arranged at two sides of the axis of the pump body with a phase difference of 180 degrees.

8. A compressor, characterized in that: A pump body having a liquid separator and any one of claims 1 to 7; the liquid separator is connected to the air inlet of the partition through an air inlet pipe; when the crankshaft of the pump body rotates, the refrigerant in the liquid separator enters the air storage cavity of the partition through the air inlet pipe and the air inlet, and then enters the upper cavity and the lower cavity respectively through the first air outlet and the second air outlet, and is discharged through the upper exhaust port and the lower exhaust port of the pump body.

Images