Pump body structure, fluid machine and heat exchange equipment

Abstract

The invention provides a pump body structure, fluid machinery and heat exchange equipment, the pump body structure comprises an air cylinder and a roller, the air cylinder is provided with an inner hole, a low-pressure side surface and a high-pressure side surface which are oppositely arranged are formed on the peripheral wall surface of the inner hole, the air cylinder is further provided with a liquid passing hole communicated with the inner hole, and a first end opening of the liquid passing hole is formed in the low-pressure side surface; the liquid passing hole is used for containing high-pressure liquid, the roller is arranged in the inner hole, the peripheral wall of the roller blocks a first end opening of the liquid passing hole, and the high-pressure liquid abuts against and pushes the roller. According to the pump body structure, the fluid machine and the heat exchange equipment, the liquid passing hole used for pushing the roller is formed in the air cylinder of the pump body structure, so that high-pressure liquid in the liquid passing hole provides thrust for the roller, and then abrasion between the roller and the surface of the low-pressure side of the air cylinder is reduced; the problem that the performance and reliability of air conditioning equipment are affected due to abrasion between an air cylinder and a roller of the air conditioning equipment in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field related to power setting, and in particular to a pump body structure, a fluid machinery and a heat exchange device. Background Art

[0002] Compressors are the power parts of traditional air-conditioning equipment and are used to output power to the outside. However, in some fields, especially in data centers and computer room air-conditioning, liquid pumps are often used instead of compressors to drive the refrigerant to run in the system. The energy efficiency is higher than that of conventional air-conditioning systems. In the industry, this system that uses a pump to drive the refrigerant is called a fluorine pump system, and the pump that drives the refrigerant is called a fluorine pump.

[0003] In the prior art, during the operation of the air-conditioning equipment, the rotary cylinder fluorine pump has a large pressure difference between the suction side and the exhaust side of the cylinder, and between the compression chamber and the suction chamber, which causes uneven force on the roller. The high-pressure side always pushes the roller toward the low-pressure side, and the load-bearing side of the inner circle of the cylinder is subjected to a large force, resulting in increased wear and friction power consumption on the low-pressure load-bearing side of the inner circle of the cylinder, affecting the performance and reliability of the air-conditioning equipment.

[0004] As can be seen from the above, the air conditioning equipment in the prior art has the problem of wear between the cylinder and the roller, which affects the performance and reliability of the air conditioning equipment. Summary of the invention

[0005] The main purpose of the present invention is to provide a pump body structure, a fluid machine and a heat exchange device to solve the problem of wear between the cylinder and the roller of the air-conditioning equipment in the prior art, which affects the performance and reliability of the air-conditioning equipment.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a pump body structure is provided, which includes a cylinder, the cylinder having an inner hole, and a low-pressure side surface and a high-pressure side surface arranged oppositely are formed on the peripheral wall surface of the inner hole. The cylinder also has a liquid hole connected to the inner hole, and the first end opening of the liquid hole is arranged on the low-pressure side surface, and the liquid hole is used to accommodate high-pressure liquid; a roller is arranged in the inner hole, and the outer peripheral wall of the roller blocks the first end opening of the liquid hole, and the high-pressure liquid pushes the roller.

[0007] Furthermore, the cylinder also has an intake port and an exhaust port arranged at intervals along the circumference of the cylinder, with the connection line of the intake port and the exhaust port as the boundary, and the low-pressure side surface and the high-pressure side surface are arranged on both sides of the connection line.

[0008] Furthermore, the liquid hole extends radially along the cylinder, the air inlet has a first edge close to the liquid hole along the circumference of the cylinder, the exhaust port has a second edge close to the liquid hole along the circumference of the cylinder, and the line connecting the axis of the cylinder and the first edge is set at an angle to the axis of the liquid hole; the line connecting the axis of the cylinder and the second edge is set at an angle to the axis of the liquid hole.

[0009] Furthermore, multiple liquid holes are arranged along the circumference of the cylinder, and the angle A between the axes of the liquid holes near the first edge and the line connecting the axis center of the cylinder and the first edge is greater than 2°; the angle B between the axes of the liquid holes near the second edge and the line connecting the axis center of the cylinder and the second edge is greater than 2°.

[0010] Furthermore, the liquid hole includes a first hole section and a second hole section extending radially along the cylinder and arranged coaxially, the first hole section is arranged on a side of the second hole section away from the inner hole, and the inner diameter of the first hole section is larger than the inner diameter of the second hole section.

[0011] Further, the opening area of ​​the first hole segment is S1, the opening area of ​​the second hole segment is S2, and S1 and S2 satisfy 1.2≤S1 / S2≤5.

[0012] Further, one or more liquid holes are arranged along the circumferential direction of the cylinder; and / or one or more liquid holes are arranged along the axial direction of the cylinder.

[0013] Furthermore, the opening shape of the liquid-passing hole is one of circular, rectangular, triangular, elliptical, waist-shaped, square, and conical.

[0014] Furthermore, the roller has a first part, a middle part and a second part which are arranged in sequence along the axial direction of the cylinder, the first part forms a first cavity, the second part forms a second cavity, the first cavity and the second cavity are arranged on both sides of the height direction of the middle part, and the outer wall surface of the middle part blocks the liquid hole.

[0015] Furthermore, the height of the middle part is H3, the height between the liquid hole and the top of the middle part is H1, and the height between the liquid hole and the bottom of the middle part is H2, wherein H1, H2 and H3 satisfy 0.2≤(H1+H2) / H3≤0.8.

[0016] Furthermore, 0.5mm≤H1≤5mm; 0.5mm≤H2≤5mm.

[0017] Furthermore, the first cavity is the first channel, the second cavity is the second channel, the inner circumferential wall of the cylinder blocks the end openings of the first channel and the second channel, the pump body structure also includes a first slider and a second slider, the first slider is slidably arranged inside the first cavity, the second slider is slidably arranged inside the second cavity, the first slider, the first part and the inner circumferential wall of the cylinder form a first compression chamber, and the second slider, the second part and the inner circumferential wall of the cylinder form a second compression chamber.

[0018] Furthermore, a circumferentially extending groove structure is provided on the low-pressure side surface, the liquid passage hole is connected with the groove structure, and the outer peripheral surface of the roller blocks the notch of the groove structure.

[0019] Furthermore, the roller has a middle part with a blocking groove structure, the height of the middle part is H3, the height between the groove structure and the top of the middle part is H5, and the height between the groove structure and the bottom of the middle part is H4, and H3, H4 and H5 satisfy 0.2≤(H4+H5) / H3≤0.8.

[0020] Furthermore, 0.5mm≤H4≤5mm; 0.5mm≤H5≤5mm.

[0021] According to another aspect of the present invention, a fluid machine is provided, the fluid machine comprising the above-mentioned pump body structure.

[0022] According to another aspect of the present invention, a heat exchange device is provided, and the heat exchange device includes the above-mentioned fluid machinery.

[0023] According to the technical solution of the present invention, the pump body structure includes a cylinder and a roller. The cylinder has an inner hole, and a low-pressure side surface and a high-pressure side surface are formed on the peripheral wall surface of the inner hole. The cylinder also has a liquid hole connected to the inner hole, and the first end opening of the liquid hole is arranged on the low-pressure side surface. The liquid hole is used to accommodate high-pressure liquid. The roller is arranged in the inner hole, and the outer peripheral wall of the roller blocks the first end opening of the liquid hole, and the high-pressure liquid pushes the roller.

[0024] From the above, it can be seen that the pump body structure of the present application adopts a liquid hole set on the low-pressure side of the cylinder to achieve the roller being pushed by the high-pressure liquid inside the liquid hole, and then the part of the roller that contacts the low-pressure side surface is pushed. After the roller is supported by the high-pressure liquid, the roller can be prevented from tilting toward the low-pressure side surface of the cylinder, thereby reducing the wear and friction power consumption between the roller and the cylinder, ensuring the energy efficiency and reliability of the pump body structure, and also improving the stability and reliability of the air-conditioning equipment using the pump body structure.

[0025] In the present application, high-pressure liquid is injected into the liquid passage hole, so that the roller can contact with the high-pressure liquid, and the liquid also has a sealing and lubricating effect, which is beneficial to reduce the friction power consumption of the pump body structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 An exploded view of the pump structure of the present invention is shown;

[0028] Figure 2 A cross-sectional view showing the pump structure of the present invention;

[0029] Figure 3A three-dimensional structural schematic diagram of a cylinder of the present invention is shown;

[0030] Figure 4 One of the cross-sectional views of the pump body structure of the present invention is shown;

[0031] Figure 5 A top view of the cylinder of the present invention is shown;

[0032] Figure 6 Another top view of the cylinder of the present invention is shown;

[0033] Figure 7 A cross-sectional view of the cylinder and roller mounting structure of the present invention is shown;

[0034] Figure 8 A side view of the cylinder of the present invention is shown, wherein the opening of the liquid hole is circular;

[0035] Fig. 9 A side view of the cylinder of the present invention is shown, wherein the liquid hole opening is rectangular;

[0036] Fig.10 A side view of the cylinder of the present invention is shown, wherein the liquid hole opening is oval;

[0037] Fig.11 A schematic structural diagram showing a liquid passage hole provided on the cylinder of the present invention is shown;

[0038] Fig.12 A schematic diagram showing the structure of the cylinder of the present invention with two liquid holes arranged thereon;

[0039] Fig.13 It shows a schematic structural diagram of three liquid holes arranged on the cylinder of the present invention;

[0040] Fig.14 A schematic diagram showing a three-dimensional structure of a cylinder having a groove structure according to the present invention is shown;

[0041] Fig.15 A cross-sectional view showing the matching structure of the groove structure and the liquid passage hole on the cylinder of the present invention;

[0042] Fig.16 A cross-sectional view showing a cylinder of the present invention having a groove structure.

[0043] The above drawings include the following reference numerals:

[0044] 10. Cylinder; 110. Inner hole; 120. Liquid hole; 130. Inlet port; 140. Exhaust port; 150. Groove structure; 20. Roller; 210. First part; 211. First cavity; 220. Middle part; 230. Second part; 231. Second cavity; 30. First slider; 40. Second slider; 50. Crankshaft. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0047] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0048] Embodiment 1

[0049] In order to solve the problem that the performance and reliability of the air-conditioning equipment are affected by the wear between the cylinder and the roller in the prior art air-conditioning equipment, the present invention provides a pump body structure.

[0050] The pump body structure in this embodiment is a fluorine pump, which is used to be installed inside the air conditioner to provide power. Especially in the fields of data centers, computer room air conditioners, etc., the fluorine pump has a good power effect.

[0051] like Figures 1 to 16 As shown, the pump body structure includes a cylinder 10 and a roller 20. The cylinder 10 has an inner hole 110. A low-pressure side surface and a high-pressure side surface are formed on the peripheral wall surface of the inner hole 110, and the cylinder 10 also has a liquid hole 120 connected to the inner hole 110. The first end opening of the liquid hole 120 is set on the low-pressure side surface. The liquid hole 120 is used to accommodate high-pressure liquid. The roller 20 is set in the inner hole 110. The outer peripheral wall of the roller 20 blocks the first end opening of the liquid hole 120, and the high-pressure liquid pushes the roller 20.

[0052] The low-pressure side surface is Figure 4 The S side is shown, and the high pressure side surface is Figure 4 D side is shown.

[0053] In this embodiment, the pump body structure further includes a housing, the cylinder 10 is disposed inside the housing, and the housing has a high-pressure cavity connected to the liquid hole 120, and the high-pressure cavity provides pressure for the liquid. The high-pressure cavity can be formed by connecting the high-pressure cavity with the pressure generating device.

[0054] In this embodiment, the roller 20 is rotatably disposed inside the inner hole 110 , and friction exists between the roller 20 and the inner circumferential surface of the inner hole 110 of the cylinder 10 .

[0055] It is understandable that the roller 20 is subjected to unbalanced pressure inside the cylinder 10, which causes the roller 20 to have a tendency to tilt toward the low-pressure side surface of the cylinder 10, thereby causing wear between the roller 20 and the low-pressure side surface of the cylinder 10. The pump body structure provided in the present application is used to overcome the above-mentioned problems.

[0056] Specifically, the pump body structure of the present application adopts a liquid hole 120 set on the low-pressure side of the cylinder 10, so as to realize the pushing of the roller 20 by the high-pressure liquid inside the liquid hole 120, and then realize the pushing of the part of the roller 20 that contacts the low-pressure side surface. After the roller 20 is supported by the high-pressure liquid, the roller 20 can be prevented from tilting toward the low-pressure side surface of the cylinder 10, thereby reducing the wear and friction power consumption between the roller 20 and the cylinder 10, ensuring the energy efficiency and reliability of the pump body structure, and also improving the stability and reliability of the air-conditioning equipment using the pump body structure.

[0057] Among them, the high-pressure liquid is a high-pressure liquid refrigerant and refrigeration oil. While the high-pressure liquid is in contact with the roller 20, the high-pressure liquid also has the function of providing lubrication for the roller 20 and the peripheral wall surface of the inner hole 110 of the cylinder 10, thereby reducing the friction between the roller 20 and the cylinder 10.

[0058] In the present application, high-pressure liquid is injected into the liquid hole 120, so that the roller 20 can contact with the high-pressure liquid, and the liquid also has a sealing and lubricating effect, which is beneficial to reduce the friction power consumption of the pump body structure.

[0059] like Figures 1 to 7 As shown, the cylinder 10 also has an intake port 130 and an exhaust port 140 arranged at intervals along the circumference of the cylinder 10, with the line connecting the intake port 130 and the exhaust port 140 as the boundary, and the low-pressure side surface and the high-pressure side surface are arranged on both sides of the line.

[0060] Specifically, the low-pressure side surface is arranged on one side of the line connecting the air inlet 130 and the air outlet 140. Since the pressure between the high-pressure side surface and the roller 20 is greater than the pressure between the low-pressure side surface and the roller 20, the roller 20 squeezes the low-pressure side surface. The liquid-passing hole 120 of this embodiment is arranged on one side of the low-pressure side surface to supplement the pressure and thus avoid the roller 20 from tilting during the movement, so as to reduce the unilateral friction between the roller 20 and the cylinder 10 and ensure the stable operation of the pump structure.

[0061] like Figure 5 As shown, the liquid hole 120 extends in the radial direction of the cylinder 10 , the air inlet 130 has a first edge close to the liquid hole 120 along the circumference of the cylinder 10 , and the exhaust port 140 has a second edge close to the liquid hole 120 along the circumference of the cylinder 10 .

[0062] Specifically, a line connecting the axis of the cylinder 10 and the first edge forms an angle with the axis of the liquid hole 120 , and a line connecting the axis of the cylinder 10 and the second edge forms an angle with the axis of the liquid hole 120 .

[0063] The first edge of the liquid hole 120 and the air inlet 130 and the second edge of the liquid hole 120 and the air outlet 140 are arranged at an angle, which can better utilize the thrust of the high-pressure liquid to enable the roller 20 to move smoothly in the inner hole 110.

[0064] In this embodiment, a plurality of liquid holes 120 are arranged along the circumference of the cylinder 10, and an angle A between the axis of the liquid holes 120 near the first edge and the line connecting the axis of the cylinder 10 and the first edge is greater than 2°, and an angle B between the axis of the liquid holes 120 near the second edge and the line connecting the axis of the cylinder 10 and the second edge is greater than 2°, to ensure that there is no leakage problem during the operation of the fluorine pump, which affects the energy efficiency of the fluorine pump.

[0065] It should be noted that the specific values ​​of angle A and angle B can be determined according to the circumferential extension length of the air inlet 130 and the exhaust port 140, and the diameter of the liquid hole 120, and thus angle A and angle B can be adaptively set, for example, 3°, 4°, 5°, 6°, etc., to achieve a value greater than 2° to ensure that the fluorine pump is leak-free during operation.

[0066] In this embodiment, the number of the plurality of liquid holes 120 may be two or more.

[0067] like Figure 6 As shown, the liquid hole 120 includes a first hole segment and a second hole segment extending radially along the cylinder 10 and arranged coaxially, the first hole segment is arranged on a side of the second hole segment away from the inner hole 110, and the inner diameter of the first hole segment is larger than the inner diameter of the second hole segment.

[0068] Specifically, the two-stage structure of the liquid hole 120 not only helps to reduce the impact of high-pressure liquid on the roller 20, but also can adjust the flow rate and pressure by controlling the inner diameter ratio of the hole section, and can flexibly adapt to different working conditions and load changes.

[0069] In this embodiment, the opening area of ​​the first hole segment is S1, and the opening area of ​​the second hole segment is S2. S1 and S2 satisfy 1.2≤S1 / S2≤5. When the opening area S1 of the first hole segment and the opening area S2 of the second hole segment satisfy 1.2≤S1 / S2≤5, the first hole segment and the second hole segment can achieve the best push against the roller 20 to reduce the friction between the roller 20 and the cylinder 10, thereby ensuring the stable operation of the roller 20.

[0070] In this embodiment, one or more liquid passage holes 120 may be provided. When multiple liquid passage holes 120 are provided, the multiple liquid passage holes 120 may be spaced along the circumference of the cylinder 10, or may be spaced along the axial direction of the cylinder 10, or may be spaced along both the circumference and the axial direction of the cylinder 10. The provision of multiple liquid passage holes 120 is conducive to improving the uniformity of the force applied to the roller 20, thereby better ensuring the stable operation of the roller 20.

[0071] In this embodiment, the opening shape of the liquid hole 120 is one of circular, rectangular, triangular, elliptical, waist-shaped, square, and conical. When multiple liquid holes 120 are provided, the shapes of the multiple liquid holes 120 can be the same or different.

[0072] like Figure 1 and Figure 7 As shown, the roller 20 has a first part 210, a middle part 220 and a second part 230 which are sequentially arranged along the axial direction of the cylinder 10, the first part 210 forms a first cavity 211, the second part 230 forms a second cavity 231, the first cavity 211 and the second cavity 231 are arranged on both sides of the height direction of the middle part 220, and the outer wall surface of the middle part 220 blocks the liquid hole 120.

[0073] Specifically, the middle portion 220 is used to block the liquid hole 120, thereby ensuring that there is no leakage between the liquid hole 120 and the roller 20, thereby ensuring the sealing of the structure.

[0074] Among them, the height of the middle part 220 is H3, the height between the liquid hole 120 and the top of the middle part 220 is H1, and the height between the liquid hole 120 and the bottom of the middle part 220 is H2. Among them, H1, H2 and H3 satisfy 0.2≤(H1+H2) / H3≤0.8, which is conducive to ensuring that the liquid hole and the compression chamber have a certain sealing distance, and the fluorine pump has no leakage loss during operation, which affects the performance.

[0075] In this embodiment, 0.5 mm ≤ H1 ≤ 5 mm, 0.5 mm ≤ H2 ≤ 5 mm.

[0076] like Figure 1 and Figure 2 As shown, the first cavity 211 is the first channel, the second cavity 231 is the second channel, the inner peripheral wall of the cylinder 10 blocks the end openings of the first channel and the second channel, and the first cavity 211 and the second cavity 231 are formed into two installation spaces.

[0077] Specifically, the pump body structure also includes a first slider 30 and a second slider 40. The first slider 30 is slidably arranged inside the first cavity 211, and the second slider 40 is slidably arranged inside the second cavity 231. The first slider 30, the first part 210 and the inner circumferential wall of the cylinder 10 form a first compression chamber, and the second slider 40, the second part 230 and the inner circumferential wall of the cylinder 10 form a second compression chamber.

[0078] The pump body structure further includes a crankshaft 50 , which passes through the first slider 30 , the roller 20 and the second slider 40 , and provides driving force for the first slider 30 , the roller 20 and the second slider 40 to move.

[0079] In this embodiment, the first compression chamber and the second compression chamber are respectively arranged on both sides of the axial direction of the middle part 220, so that gas compression can be achieved by moving the slider inside the channel.

[0080] like Figures 14 to 16 As shown, a circumferentially extending groove structure 150 is provided on the low-pressure side surface, the liquid hole 120 is connected with the groove structure 150 , and the outer circumferential surface of the roller 20 blocks the notch of the groove structure 150 .

[0081] Specifically, since the flow area of ​​the liquid hole 120 is relatively small, a groove structure 150 can be added to the inner circle of the cylinder 10. The groove structure 150 is connected to the liquid hole 120 and is arranged on the low-pressure side surface of the cylinder 10. The high-pressure liquid refrigerant and the refrigeration oil enter the groove structure 150 through the liquid hole 120, and support the roller 20 portion opposite to the low-pressure side surface. The groove structure 150 can be opened at a large angle, without the need for radial sealing, and has a large flow area. The support area for the roller 20 is increased, further reducing the force on the low-pressure side surface of the cylinder 10, improving the inclination of the roller 20, preventing the inner circle of the cylinder 10 from being worn, reducing friction power consumption, and improving the reliability of the fluorine pump. At the same time, the flow area of ​​the liquid refrigerant to the inner circle of the cylinder 10 is increased, and the sealing and lubrication effects are further enhanced, thereby improving the wear on the low-pressure side surface of the inner circle of the cylinder 10, reducing friction power consumption, and improving the performance of the fluorine pump.

[0082] In this embodiment, the roller 20 has a middle part 220 that blocks the groove structure 150, the height of the middle part 220 is H3, the height between the groove structure 150 and the top of the middle part 220 is H5, and the height between the groove structure 150 and the bottom of the middle part 220 is H4, and H3, H4 and H5 satisfy 0.2≤(H4+H5) / H3≤0.8.

[0083] Among them, 0.5mm≤H4≤5mm; 0.5mm≤H5≤5mm. H3, H4 and H5 satisfying the above ratio formula and corresponding values ​​are conducive to ensuring that the groove structure 150 and the upper and lower compression chambers have a certain sealing distance, and the fluorine pump has no leakage loss during operation to affect the performance.

[0084] In this embodiment, the shape of the groove structure 150 includes but is not limited to a crescent shape, a circle, etc., which can further enhance the support and lubrication effect. The number of the groove structure 150 includes but is not limited to one or more, which can better support and lubricate the roller 20 while ensuring that the bearing side has a certain bearing area, prevent the roller 20 from tilting, and enhance the performance and reliability of the fluorine pump.

[0085] Embodiment 2

[0086] This embodiment provides a fluid machine, and the fluid machine includes the pump body structure in the first embodiment.

[0087] Embodiment 3

[0088] This embodiment provides a heat exchange device, and the heat exchange device includes the fluid machinery in the second embodiment.

[0089] In this embodiment, the heat exchange device is an air conditioner.

[0090] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0091] The pump body structure of the present application adopts a liquid hole 120 set on the low-pressure side of the cylinder 10, so as to realize the pushing of the roller 20 by the high-pressure liquid inside the liquid hole 120, and then realize the pushing of the part of the roller 20 that contacts the low-pressure side surface. After the roller 20 is supported by the high-pressure liquid, the roller 20 can be prevented from tilting toward the low-pressure side surface of the cylinder 10, thereby reducing the wear and friction power consumption between the roller 20 and the cylinder 10, ensuring the energy efficiency and reliability of the pump body structure, and also improving the stability and reliability of the air-conditioning equipment using the pump body structure.

[0092] In the present application, high-pressure liquid is injected into the liquid hole 120, so that the roller 20 can contact with the high-pressure liquid, and the liquid also has a sealing and lubricating effect, which is beneficial to reduce the friction power consumption of the pump body structure.

[0093] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0094] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0095] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pump body structure, characterized in that: include: A cylinder (10), wherein the cylinder (10) has an inner hole (110), a low-pressure side surface and a high-pressure side surface are formed on a peripheral wall surface of the inner hole (110) and are arranged opposite to each other, and the cylinder (10) also has a liquid passage hole (120) connected to the inner hole (110), a first end opening of the liquid passage hole (120) is arranged on the low-pressure side surface, and the liquid passage hole (120) is used to accommodate high-pressure liquid; A roller (20), wherein the roller (20) is arranged in the inner hole (110), the outer peripheral wall of the roller (20) blocks the first end opening of the liquid hole (120), and the high-pressure liquid pushes the roller (20).

2. The pump body structure according to claim 1, characterized in that: The cylinder (10) further comprises an air inlet (130) and an exhaust port (140) arranged at intervals along the circumference of the cylinder (10), with a line connecting the air inlet (130) and the exhaust port (140) serving as a boundary, and the low-pressure side surface and the high-pressure side surface being arranged on both sides of the line.

3. The pump structure according to claim 2, characterized in that: The liquid passage hole (120) extends in the radial direction of the cylinder (10), the air inlet (130) has a first edge close to the liquid passage hole (120) along the circumferential direction of the cylinder (10), and the air outlet (140) has a second edge close to the liquid passage hole (120) along the circumferential direction of the cylinder (10). The line connecting the axis of the cylinder (10) and the first edge is arranged at an angle to the axis of the liquid passage hole (120); A line connecting the axis of the cylinder (10) and the second edge is arranged at an angle to the axis of the liquid passage hole (120).

4. The pump structure according to claim 3, characterized in that: The liquid passage holes (120) are arranged in a plurality along the circumference of the cylinder (10). An angle A between the axis of the plurality of liquid holes (120) close to the first edge and a line connecting the axis of the cylinder (10) and the first edge is greater than 2°; An angle B between the axis of the plurality of liquid holes (120) close to the second edge and a line connecting the axis of the cylinder (10) and the second edge is greater than 2°.

5. The pump structure according to claim 1, characterized in that: The liquid passage hole (120) comprises a first hole section and a second hole section extending radially along the cylinder (10) and arranged coaxially, the first hole section being arranged on a side of the second hole section away from the inner hole (110), and the inner diameter of the first hole section being larger than the inner diameter of the second hole section.

6. The pump structure according to claim 5, characterized in that: The opening area of ​​the first hole segment is S1, the opening area of ​​the second hole segment is S2, and S1 and S2 satisfy 1.2≤S1 / S2≤5.

7. The pump structure according to claim 1, characterized in that: Said include: One or more liquid passage holes (120) are provided along the circumference of the cylinder (10); and / or One or more liquid passage holes (120) are arranged along the axial direction of the cylinder (10).

8. The pump structure according to claim 1, characterized in that: The opening shape of the liquid passage hole (120) is one of a circle, a rectangle, a triangle, an ellipse, a waist, a square, and a cone.

9. The pump structure according to claim 1, characterized in that: The roller (20) comprises a first part (210), a middle part (220) and a second part (230) which are arranged in sequence along the axial direction of the cylinder (10); the first part (210) forms a first cavity (211); the second part (230) forms a second cavity (231); the first cavity (211) and the second cavity (231) are arranged on both sides of the middle part (220) in a height direction; and the outer wall surface of the middle part (220) blocks the liquid passage hole (120).

10. The pump structure according to claim 9, characterized in that: The height of the middle part (220) is H3, the height between the liquid hole (120) and the top of the middle part (220) is H1, and the height between the liquid hole (120) and the bottom of the middle part (220) is H2, wherein H1, H2 and H3 satisfy 0.2≤(H1+H2) / H3≤0.

8.

11. The pump structure according to claim 10, characterized in that: 0.5mm≤H1≤5mm; 0.5mm≤H2≤5mm.

12. The pump structure according to claim 9, characterized in that: The first cavity (211) is a first channel, the second cavity (231) is a second channel, and the inner peripheral wall surface of the cylinder (10) blocks the end openings of the first channel and the second channel. The pump body structure also includes a first slider (30) and a second slider (40), wherein the first slider (30) is slidably disposed inside the first cavity (211), and the second slider (40) is slidably disposed inside the second cavity (231), and the first slider (30), the first part (210) and the inner peripheral wall surface of the cylinder (10) form a first compression chamber, and the second slider (40), the second part (230) and the inner peripheral wall surface of the cylinder (10) form a second compression chamber.

13. The pump structure according to any one of claims 1 to 12, characterized in that: The low-pressure side surface has a circumferentially extending groove structure (150), the liquid passage hole (120) is in communication with the groove structure (150), and the outer peripheral surface of the roller (20) blocks the notch of the groove structure (150).

14. The pump structure according to claim 13, characterized in that: The roller (20) has a middle part (220) that blocks the groove structure (150), the height of the middle part (220) is H3, the height between the groove structure (150) and the top end of the middle part (220) is H5, the height between the groove structure (150) and the bottom end of the middle part (220) is H4, and H3, H4 and H5 satisfy 0.2≤(H4+H5) / H3≤0.

8.

15. The pump structure according to claim 14, characterized in that: 0.5mm≤H4≤5mm; 0.5mm≤H5≤5mm.

16. A fluid machine, characterized in that: The fluid machine comprises the pump body structure according to any one of claims 1 to 15.

17. A heat exchange device, characterized in that: The heat exchange equipment includes the fluid machinery according to claim 16.

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