Compressor pump body structure, compressor and air conditioner

Abstract

The invention provides a compressor pump body structure, a compressor and an air conditioner, the compressor pump body structure comprises an air cylinder and a connecting part, the air cylinder is internally provided with a working cavity, the connecting part is arranged at one axial end of the air cylinder, the connecting part is further provided with an air inlet channel, and the air inlet channel communicates with the working cavity; the diameter of the air inlet channel is D, the axial height of the air cylinder is H, and H-D is smaller than or equal to 1 mm. According to the invention, the height of the cylinder (single-cylinder / double-cylinder / multi-cylinder) can be reduced while the air inflow is ensured, the design of small cylinder height is realized, and the problems that the air suction holes of the small-cylinder-height cylinder of the existing compressor are not enough to be formed, the air suction of the compressor is influenced, and the energy efficiency of the compressor is lower are solved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a compressor pump body structure, a compressor and an air conditioner. Background Art

[0002] In existing rotary compressors, the cylinder height is too high, which will lead to increased leakage in the gap between the roller and the cylinder wall, and between the vane head and the outer circle of the roller. At the same time, the increase in the cylinder wall area will also lead to increased heat transfer in the compressor pump body, affecting the energy efficiency of the compressor.

[0003] For small-displacement twin-cylinder compressors, the cylinder height cannot be too low due to existing technology limitations, resulting in the sum of the total cylinder heights of the two cylinders being much greater than that of a single-cylinder compressor of the same displacement. As a result, gap leakage and heat transfer in the compressor have a significant impact on the energy efficiency of the compressor, limiting the development and promotion of small-displacement compressors.

[0004] The present invention solves one of the core bottlenecks in the development of small-displacement twin-cylinder compressors: insufficient space for the air intake holes of the small-cylinder high cylinder, which affects the air intake of the compressor and results in low energy efficiency of the compressor.

[0005] Since the compressor in the prior art has a small cylinder and a high cylinder, and there is not enough space for the air intake holes to be opened, which affects the air intake of the compressor and leads to low energy efficiency of the compressor, the present invention studies and designs a compressor pump body structure, a compressor and an air conditioner. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the air intake holes of the compressor with a small cylinder and a high cylinder do not have sufficient space to be opened, which affects the air intake of the compressor and leads to low energy efficiency of the compressor, thereby providing a compressor pump body structure, a compressor and an air conditioner.

[0007] In order to solve the above problems, the present invention provides a compressor pump body structure, which includes:

[0008] A cylinder and a connecting part, wherein the interior of the cylinder has a working chamber, the connecting part is arranged at one axial end of the cylinder, and an air intake passage is also arranged on the connecting part, the air intake passage is connected with the working chamber so as to be able to intake air into the cylinder, and the aperture of the air intake passage is D, the axial height of the cylinder is H, and HD≤1mm.

[0009] In some embodiments,

[0010] The cylinder is also provided with an air supply channel 1, which is opened on an axial side end face of the cylinder facing the connecting part. One end of the air supply channel 1 is connected to the working chamber of the cylinder, and the other end is connected to the air intake channel on the connecting part to form an air intake port of the cylinder.

[0011] In some embodiments,

[0012] The axial height of the cylinder is H, and satisfies H≤11.5 mm.

[0013] In some embodiments,

[0014] The connecting portion further has an air supply channel 2, which is connected to the air intake channel and the air supply channel 1. The extension direction of the air intake channel is different from that of the air supply channel 2.

[0015] In some embodiments,

[0016] In the longitudinal cross-section, the width of the air supply channel one is the dimension perpendicular to the gas flow direction therein, the width of the air supply channel two is the dimension perpendicular to the gas flow direction therein, the air supply channel includes the air supply channel one and the air supply channel two, and the width L of the air supply channel is the largest width between the width of the air supply channel one and the width of the air supply channel two, the axial height of the cylinder is H, and L≥0.75H.

[0017] In some embodiments,

[0018] One end of the air intake passage is located on the outer peripheral wall of the connecting part, and the other end extends toward the inside of the connecting part to communicate with the second air supply passage. The second air supply passage extends along the axial direction of the connecting part, or along a direction with an axial angle less than 90° with the connecting part.

[0019] In some embodiments,

[0020] The air supply channel 1 is a cutout opened on the axial end face of the cylinder on one side facing the connecting portion and on the axial end face of the cylinder on the other side, and the air supply channel 2 is a cutout opened on the axial end face of the connecting portion on one side facing the cylinder and on the axial end face of the connecting portion on the other side.

[0021] In some embodiments,

[0022] The air supply channel 1 penetrates from one axial end surface of the cylinder to the other axial end surface; or, the air supply channel 1 does not penetrate both axial end surfaces of the cylinder, and the bottom surface of the cut formed by the air supply channel 1 on the cylinder is a beveled surface, and the normal line of the beveled surface faces the connecting portion;

[0023] The air supply channel 2 does not penetrate the two axial end surfaces of the connecting part: the incision formed by the air supply channel 2 on the connecting part is a straight incision extending along the axial direction of the connecting part, or the incision formed by the air supply channel 2 on the connecting part is an oblique incision, the bottom surface of the oblique incision is an oblique cut surface, and the normal of the oblique cut surface faces the cylinder.

[0024] In some embodiments,

[0025] The flow cross-sectional area of ​​the air supply channel 2 is greater than the flow cross-sectional area of ​​the air inlet channel.

[0026] In some embodiments,

[0027] There is one cylinder to form a single-cylinder compressor, which also includes a first flange and a second flange. The first flange is located at one axial end of the cylinder, and the second flange is located at the other axial end of the cylinder. The second flange is provided with the air inlet channel and the air supply channel 2.

[0028] In some embodiments,

[0029] There are two cylinders, forming a dual-cylinder compressor, including a first cylinder and a second cylinder, and the compressor pump body structure also includes a first flange, a second flange and a partition, the first flange is located at one axial end of the first cylinder, the second flange is located at the other axial end of the second cylinder, and the first cylinder and the second cylinder are connected through the partition;

[0030] The connecting portion includes at least one of the first flange, the second flange and the partition, the air intake passage of the first cylinder is opened on at least one of the first flange and the partition, and the air intake passage of the second cylinder is opened on at least one of the second flange and the partition.

[0031] In some embodiments,

[0032] The air intake channel is opened on the partition, the air supply channel 1 includes a first air supply channel 1 opened on the first cylinder and a second air supply channel 1 opened on the second cylinder, the air supply channel 2 includes a first air supply channel 2 opened on the partition and a second air supply channel 2 opened on the partition, the first air supply channel 1 and the first air supply channel 2 are connected to form a first air supply channel, the first air supply channel connects the air intake channel and the working chamber of the first cylinder, the second air supply channel 1 and the second air supply channel 2 are connected to form a second air supply channel, the second air supply channel connects the air intake channel and the working chamber of the second cylinder.

[0033] In some embodiments,

[0034] The air intake passage includes a first air intake passage and a second air intake passage, the first air intake passage is opened on the first flange, the second air intake passage is opened on the second flange, the air supply passage one includes a first air supply passage one opened on the first cylinder and a second air supply passage one opened on the second cylinder, the air supply passage two includes a first air supply passage two opened on the first flange and a second air supply passage two opened on the second flange, the first air supply passage one and the first air supply passage two are connected to form a first air supply passage, the second air supply passage one and the second air supply passage two are connected to form a second air supply passage, the first air supply passage connects the first air intake passage and the working chamber of the first cylinder, and the second air supply passage connects the second air intake passage and the working chamber of the second cylinder.

[0035] In some embodiments,

[0036] The first air supply channel and the second air supply channel both extend obliquely. In the longitudinal section, the angle between the extension direction of the first air supply channel and the axial end face of the first cylinder is 30° to 60°, and the angle between the extension direction of the second air supply channel and the axial end face of the second cylinder is 30° to 60°.

[0037] In some embodiments,

[0038] The diameter of the air inlet channel is D, the diameters of the first air supply channel and the second air supply channel are both d, satisfying: 1.1≤D / d≤1.5; and / or,

[0039] The first air supply channel has a minimum distance A from the first flange in the axial direction of the first cylinder, which satisfies: 0.5 mm ≤ A ≤ 2 mm; the second air supply channel has a minimum distance A from the second flange in the axial direction of the second cylinder, which satisfies: 0.5 mm ≤ A ≤ 2 mm; and / or,

[0040] The thickness of the partition along the axial direction is Hp, and the heights of the first cylinder and the second cylinder along the axial direction are both H, satisfying Hp / H≥1.25.

[0041] In some embodiments,

[0042] The axial heights of the first cylinder and the second cylinder are both H, and H≤10.5 mm.

[0043] The present invention also provides a compressor, which comprises the above compressor pump body structure.

[0044] The present invention also provides an air conditioner, which comprises the aforementioned compressor.

[0045] The compressor pump body structure, compressor and air conditioner provided by the present invention have the following beneficial effects:

[0046] The present invention arranges the air intake passage on the connecting part at one circumferential end of the cylinder (preferably on the flange of a single cylinder, or on the flange or partition of a double cylinder or multiple cylinders), and sets the axial height H of the cylinder to H≤D+1mm. This can reduce the axial height of the cylinder (single cylinder / dual cylinder / multi-cylinder) while ensuring the air intake volume, thereby realizing a small cylinder and high design, or increasing the area of ​​the air intake passage on the basis of realizing the small cylinder and high design, thereby increasing the air intake volume and greatly improving the energy efficiency of the compressor, thereby solving the problem that the air intake holes of the existing small cylinder and high cylinder of the compressor do not have sufficient space to be opened, thereby affecting the air intake of the compressor and causing low energy efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a longitudinal cross-sectional view of the compressor cylinder in the prior art, in which the cylinder is higher than the suction hole (intake passage);

[0048] Figure 2 yes Figure 1 A partial enlarged view of the pump body;

[0049] Figure 3 It is a longitudinal cross-sectional view of a first embodiment of a cylinder (single cylinder) in a compressor pump body structure of the present invention;

[0050] Figure 4 is a longitudinal sectional view of a second embodiment of a cylinder (single cylinder) in a compressor pump body structure of the present invention;

[0051] Figure 5 yes Figure 4 A partial enlarged view of the lower flange in FIG.

[0052] Figure 6 yes Figure 4 A top view of the lower flange in FIG.

[0053] Figure 7 yes Figure 4 A partial enlarged view of the cylinder in FIG.

[0054] Figure 8 yes Figure 4 A top view of the cylinder in FIG.

[0055] Fig. 9 It is a longitudinal cross-sectional view of a first embodiment of a cylinder (dual cylinder) in a compressor pump body structure of the present invention;

[0056] Fig.10 It is a longitudinal sectional view of a second embodiment of the cylinder (dual cylinder) in the compressor pump body structure of the present invention.

[0057] The reference numerals are as follows:

[0058] 1. Cylinder; 11. First cylinder; 12. Second cylinder; 2. Connecting part; 3. Working chamber; 4. Air intake passage; 41. First air intake passage; 42. Second air intake passage; 5. Air supply passage 1; 51. First air supply passage 1; 52. Second air supply passage 1; 6. First flange; 7. Second flange; 8. Partition; 9. Air supply passage 2; 91. First air supply passage 2; 92. Second air supply passage 2; 13. First air supply passage; 14. Second air supply passage; 15. Intake pipe. DETAILED DESCRIPTION

[0059] 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0060] 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.

[0061] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0062] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0063] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0064] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0065] like Figure 3-10 As shown, the present invention provides a compressor pump body structure, which includes:

[0066] A cylinder 1 and a connecting portion 2, wherein the cylinder 1 has a working chamber 3 inside, the connecting portion 2 is arranged at one axial end of the cylinder 1, and an air intake passage 4 is also arranged on the connecting portion 2, the air intake passage 4 is connected with the working chamber 3 so as to be able to intake air into the cylinder 1, and the aperture of the air intake passage 4 is D, the axial height of the cylinder 1 is H, and HD≤1mm.

[0067] The present invention arranges the air intake passage on the connecting part at one circumferential end of the cylinder (preferably on the flange of a single cylinder, or on the flange or partition of a double cylinder or multiple cylinders), and sets the axial height H of the cylinder to H≤D+1mm. This can reduce the axial height of the cylinder (single cylinder / dual cylinder / multi-cylinder) while ensuring the air intake volume, thereby realizing a small cylinder and high design, or increasing the area of ​​the air intake passage on the basis of realizing the small cylinder and high design, thereby increasing the air intake volume and greatly improving the energy efficiency of the compressor, thereby solving the problem that the air intake holes of the existing small cylinder and high cylinder of the compressor do not have sufficient space to be opened, thereby affecting the air intake of the compressor and causing low energy efficiency of the compressor.

[0068] In some embodiments,

[0069] The cylinder 1 is also provided with an air supply channel 5, which is opened on the axial end face of the cylinder 1 facing the connecting part 2. One end of the air supply channel 5 is connected to the working chamber 3 of the cylinder 1, and the other end is connected to the air intake channel 4 on the connecting part 2 to form an air intake port of the cylinder 1.

[0070] The present invention can also connect the air intake channel and the working chamber of the cylinder through the provision of the air supply channel 1 on the cylinder, thereby achieving the function of connecting the air intake.

[0071] In some embodiments,

[0072] The axial height of the cylinder 1 is H, and satisfies H≤11.5 mm.

[0073] like Figure 1 In the existing compressors, the difference between the cylinder height and the diameter cannot be less than 1mm. When the cylinder height is reduced to a lower level, the air intake hole of the cylinder cannot be enlarged. The present invention provides a compressor with a small cylinder height. The air intake passage of the pump body is arranged on the end face part (connecting part) of the cylinder. The cylinder height is H, and the air intake hole diameter of the pump body is D, wherein HD≤1mm. This can effectively solve the problem that the above-mentioned small cylinder height cylinder cannot increase the air intake volume, and can also reduce the cylinder height while ensuring the air intake volume. The cylinder height of the present invention can preferably be reduced to 11.5mm or less. The above-mentioned end face part can be an upper flange, a partition or a lower flange part.

[0074] The height of the cylinder of the present invention is further preferably ≤11mm. Generally, the wall thickness of the air intake pipe is fixed, generally about 1mm, and the wall thickness limit of the cylinder can generally reach about 1.5mm. When the cylinder height is reduced to 11mm, the effective air intake diameter is reduced to 6mm, and the air intake effect of the compressor drops sharply. Therefore, the cylinder of the general existing compressor cannot be lower than 11mm. The use of this solution structure can effectively solve the problem of the air intake hole limiting the reduction of the cylinder height.

[0075] In some embodiments,

[0076] The connecting portion 2 further has an air supply channel 2 9 , which is connected to the air intake channel 4 and the air supply channel 1 5 . The extension direction of the air intake channel 4 is different from that of the air supply channel 2 9 .

[0077] The present invention further can connect and guide the gas in the air intake channel through the air supply channel 2 opened on the connecting portion, and connect to the working chamber of the cylinder through the air supply channel 1 opened on the cylinder. The air supply channel 2 of the present invention has a different extension direction from the air intake channel, thereby achieving effective air intake for the cylinder.

[0078] In some embodiments,

[0079] In the longitudinal cross-section, the width of the air supply channel 1 5 is the dimension perpendicular to the gas flow direction therein, the width of the air supply channel 2 9 is the dimension perpendicular to the gas flow direction therein, the air supply channel includes the air supply channel 1 5 and the air supply channel 2 9, and the width L of the air supply channel is the largest width between the width of the air supply channel 1 5 and the width of the air supply channel 2 9, the axial height of the cylinder 1 is H, and L ≥ 0.75H.

[0080] The width of the air supply channel of the present invention is L, and the height of the cylinder is H, preferably satisfying L≥0.75H, which can further increase the flow cross-sectional area of ​​the air supply channel, thereby further increasing the air intake volume and improving the energy efficiency of the compressor.

[0081] In some embodiments,

[0082] One end of the air intake channel 4 is located on the outer peripheral wall of the connecting part 2, and the other end extends toward the inside of the connecting part 2 to communicate with the air supply channel 2 9. The air supply channel 2 9 extends along the axial direction of the connecting part 2, or extends along a direction with an axial angle less than 90° with the connecting part 2.

[0083] This is the preferred setting form of the intake passage of the present invention, which is connected from the outer peripheral wall of the connecting part to intake air (through the intake pipe), and the extension direction of the air supply channel 2 is preferably extended along the axial direction, or extended at an inclined angle to the axial direction, both of which can achieve the effect of large-scale air intake into the cylinder.

[0084] In some embodiments,

[0085] The air supply channel 1 5 is a cutout opened on the axial end face of the cylinder 1 on one side facing the connecting part 2 and on the axial end face of the cylinder 1 on the other side, and the air supply channel 2 9 is a cutout opened on the axial end face of the connecting part 2 on one side facing the cylinder 1 and on the axial end face of the connecting part 2 on the other side.

[0086] The air supply channel 1 of the present invention is preferably a cutout opened on the axial end face of the cylinder, and the air supply channel 2 is preferably a cutout opened on the axial end face of the connecting portion. The two cutouts are opposite and connected, and the inclined surfaces formed by the two cutouts are preferably parallel. The formed air supply channel is a straight channel facing the working chamber inside the cylinder.

[0087] In some embodiments,

[0088] like Figure 4 In the second embodiment, the air supply channel 5 extends from one axial end surface of the cylinder 1 to the other axial end surface; or Figure 3 In the first embodiment, the air supply channel 15 does not penetrate the two axial end surfaces of the cylinder 1, and the bottom surface of the cutout formed by the air supply channel 15 on the cylinder 1 is a beveled surface (such as Figure 3 The upper end surface of the air supply channel 1 5 shown in the figure), the normal line of the chamfered surface is toward the connecting portion 2 (that is, the vertical line of the upper end surface of the chamfered surface of the air supply channel 1 5 is toward the lower flange below);

[0089] like Figure 4 In the second embodiment, the air supply channel 2 9 does not penetrate the two axial end surfaces of the connecting portion 2: the cutout formed by the air supply channel 2 9 on the connecting portion 2 is a straight cutout extending along the axial direction of the connecting portion 2, or, as Figure 3 In the first embodiment, the cut formed by the air supply channel 2 9 on the connecting portion 2 is an oblique cut, and the bottom surface of the oblique cut is an oblique cut surface (such as Figure 3 The lower end surface of the air supply channel 2 9 shown in the figure), the normal line of the beveled surface faces the cylinder 1 (that is, the vertical line of the lower end surface of the beveled surface of the air supply channel 2 9 faces the cylinder above).

[0090] These are two different preferred structural forms of the air supply channel 1 and the air supply channel 2 of the present invention. Figure 3 The air supply channel 1 is surrounded by an oblique cutout on the inner wall of the cylinder, and the two sides of the air supply channel are surrounded by an oblique cutout on the inner wall of the connecting portion, connecting the air supply channel 1 and the air intake channel. The air supply channel 1 directly enters the cylinder compression chamber from the cylinder end face part and connects to the cylinder working chamber, thereby realizing a short cylinder and high air intake structure; Figure 4 The air supply channel 1 is a straight cut extending in the axial direction of the inner wall of the cylinder (preferably passing through the upper and lower end faces of the cylinder to further increase the intake flow rate), and the two sides of the air supply channel are straight cuts extending in the axial direction on the inner wall of the connecting part, connecting the air supply channel 1 and the air intake channel. The air supply channel 1 directly enters the cylinder compression chamber from the cylinder end face part and is connected to the cylinder working chamber, thereby realizing a short cylinder and high intake port structure.

[0091] In some embodiments,

[0092] The flow cross-sectional area of ​​the air supply channel 2 9 is larger than the flow cross-sectional area of ​​the air inlet channel 4 (ie, the area perpendicular to the flow direction of the air flow).

[0093] The present invention preferably adopts such a configuration to further increase the ventilation area of ​​the air supply channel 2, further increase the air intake flow of the small-cylinder high-pressure compressor, and improve the energy efficiency of the compressor.

[0094] In some embodiments,

[0095] The cylinder 1 is one, forming a single-cylinder compressor, and also includes a first flange 6 and a second flange 7. The first flange 6 is located at one axial end of the cylinder 1, and the second flange 7 is located at the other axial end of the cylinder 1; the second flange 7 is provided with the air intake channel 4 and the air supply channel 9.

[0096] This is the preferred structural form of the single-cylinder compressor of the present invention. The connecting portion is a second flange, and an air inlet channel and an air supply channel are provided on the second flange. Figure 2 The prior art shown, Figure 2 for Figure 1 The compressor is a single-cylinder compressor. Due to the air intake hole and the wall thickness of the air intake hole position, the cylinder height of the compressor is relatively high and cannot be further reduced. It cannot meet the most suitable low cylinder height design requirements under the compressor displacement. Figure 3 It is an improved single-cylinder implementation scheme of the compressor of the present invention, wherein the air inlet hole is arranged on the lower flange, and an air supply channel is provided. The air supply channel opens up the upper end surface of the lower flange and the cylinder wall surface, and finally connects with the working chamber of the cylinder to supply air to the working chamber of the compressor, thereby achieving the requirements of both air intake volume and small cylinder height.

[0097] contrast Figure 2 and Figure 3 After adopting the technology of the solution of the present invention, the cylinder height of a certain model was reduced from 16mm to 10mm.

[0098] In some embodiments,

[0099] There are two cylinders 1, forming a dual-cylinder compressor, including a first cylinder 11 and a second cylinder 12. The compressor pump body structure also includes a first flange 6, a second flange 7 and a partition 8. The first flange 6 is located at one axial end of the first cylinder 11, and the second flange 7 is located at the other axial end of the second cylinder 1. The first cylinder 11 and the second cylinder 12 are connected through the partition 8.

[0100] The connecting portion 2 includes at least one of the first flange 6, the second flange 7 and the partition 8, the intake passage of the first cylinder 11 is opened on at least one of the first flange 6 and the partition 8, and the intake passage of the second cylinder 12 is opened on at least one of the second flange 7 and the partition 8.

[0101] This is the preferred structural form of the twin-cylinder compressor of the present invention, that is, the connecting portion can be at least one of the first and second flanges and the partition, which can ensure that the air intake of the twin cylinders is increased while setting the twin cylinders to a small-cylinder-high structure, while ensuring the energy efficiency and small size of the compressor.

[0102] The double-cylinder compressor of the present invention has relatively small heights of upper and lower cylinders. The air intake passage of the compressor is arranged on an upper flange, a partition, or a lower flange, and the air intake passage is respectively connected to the working chambers of the upper and lower cylinders through an air supply passage, thereby achieving air supply to the upper and lower cylinders.

[0103] In some embodiments,

[0104] like Fig. 9 The air intake channel 4 is opened on the partition 8, the air supply channel 1 5 includes a first air supply channel 1 51 opened on the first cylinder 11 and a second air supply channel 1 52 opened on the second cylinder 12, the air supply channel 2 9 includes a first air supply channel 2 91 opened on the partition 8 and a second air supply channel 2 92 opened on the partition 8, the first air supply channel 1 51 and the first air supply channel 2 91 are connected to form a first air supply channel 13, the first air supply channel 13 connects the air intake channel 4 and the working chamber of the first cylinder 11, the second air supply channel 1 52 and the second air supply channel 2 92 are connected to form a second air supply channel 14, the second air supply channel 14 connects the air intake channel 4 and the working chamber of the second cylinder 12.

[0105] This is the first preferred structural form of the twin-cylinder compressor of the present invention, that is, the air intake channel is arranged on the partition, and air is simultaneously supplied to the first and second cylinders. Preferably, air is supplied to the first cylinder through the first air supply channel (including the first air supply channel 1 on the first cylinder and the first air supply channel 2 on the partition), and air is supplied to the second cylinder through the second air supply channel (including the second air supply channel 1 on the second cylinder and the second air supply channel 2 on the partition) (preferably, the first cylinder is the upper cylinder and the second cylinder is the lower cylinder, the upper air supply channel connects the air intake channel with the working chamber of the upper cylinder, and the lower air supply channel connects the air intake channel with the working chamber of the lower cylinder). This can simultaneously ensure the air intake volume of the two cylinders while realizing the design of small cylinder height for the two cylinders, thereby reducing the volume of the compressor.

[0106] In some embodiments,

[0107] like Fig.10 The air intake channel 4 includes a first air intake channel 41 and a second air intake channel 42, the first air intake channel 41 is opened on the first flange 6, and the second air intake channel 42 is opened on the second flange 7, the air supply channel 15 includes a first air supply channel 151 opened on the first cylinder 11 and a second air supply channel 152 opened on the second cylinder 12, the air supply channel 29 includes a first air supply channel 291 opened on the first flange 6 and a second air supply channel 292 opened on the second flange 7, the first air supply channel 151 and the first air supply channel 291 are connected to form a first air supply channel 13, the second air supply channel 152 and the second air supply channel 292 are connected to form a second air supply channel 14, the first air supply channel 13 connects the first air intake channel 41 and the working chamber of the first cylinder 11, and the second air supply channel 14 connects the second air intake channel 42 and the working chamber of the second cylinder 12.

[0108] This is the second preferred structural form of the twin-cylinder compressor of the present invention, that is, the air intake passages are respectively arranged on the first and second flanges, the first air intake passage on the first flange intakes air to the first cylinder, and the second air intake passage on the second flange intakes air to the second cylinder. Preferably, air is supplied to the first cylinder through the first air supply passage (including the first air supply passage one on the first cylinder and the first air supply passage two on the first flange), and air is supplied to the second cylinder through the second air supply passage (including the second air supply passage one on the second cylinder and the second air supply passage two on the second flange) (preferably, the first cylinder is the upper cylinder and the second cylinder is the lower cylinder, the upper air supply passage connects the air intake passage and the working chamber of the upper cylinder, and the lower air supply passage connects the air intake passage and the working chamber of the lower cylinder), which can simultaneously realize the small cylinder height design of the two cylinders while ensuring the air intake volume of the two cylinders, thereby reducing the volume of the compressor.

[0109] In some embodiments,

[0110] The first air supply channel 13 and the second air supply channel 14 both extend obliquely. In the longitudinal section, the angle between the extension direction of the first air supply channel 13 and the axial end face of the first cylinder 11 is 30° to 60°, and the angle between the extension direction of the second air supply channel 14 and the axial end face of the second cylinder 12 is 30° to 60°.

[0111] The invention can prevent the formation of sharp edge burrs with the end surface by setting the inclined air supply channel, improve the sealing performance and improve the air intake effect.

[0112] In some embodiments,

[0113] The diameter of the air inlet channel 4 is D, the diameters of the first air supply channel 13 and the second air supply channel 14 are both d, satisfying: 1.1≤D / d≤1.5; and / or,

[0114] The first air supply channel 13 has a minimum distance A from the first flange 6 in the axial direction of the first cylinder 11, which satisfies: 0.5 mm ≤ A ≤ 2 mm; the second air supply channel 14 has a minimum distance A from the second flange 7 in the axial direction of the second cylinder 12, which satisfies: 0.5 mm ≤ A ≤ 2 mm; and / or,

[0115] The thickness of the partition plate 8 along the axial direction is Hp, and the heights of the first cylinder 11 and the second cylinder 12 along the axial direction are both H, satisfying Hp / H≥1.25.

[0116] The present invention sets the diameter D of the air intake channel and the diameter d of the air supply channel to satisfy 1.1≤D / d≤1.5, thereby ensuring that the air supply volume is increased while avoiding large air flow gradient losses, thereby improving the stability of the air intake. The air supply channel is not set to pass through the cylinder (there is a minimum distance A between the air supply channel and the flange), thereby preventing the formation of sharp burrs on the end face, improving the sealing performance, and improving the air intake effect. The present invention also sets the partition thickness to Hp and the cylinder height to H to satisfy Hp / H≥1.25. Since the cylinder wall thickness is thinned, the partition is thickened, and the air intake holes are set on the partition, thereby achieving a larger air intake channel area, increasing the air intake flow rate, and improving energy efficiency.

[0117] In some embodiments,

[0118] The axial heights of the first cylinder 11 and the second cylinder 12 are both H, and H≤10.5 mm.

[0119] The cylinder height of the twin-cylinder compressor of the present invention can be effectively reduced to 10.5 mm or less, and the cylinder height can be reduced while ensuring the air intake volume.

[0120] like Figure 1 As shown, the suction hole of the existing compressor is connected to the suction pipe, and air is sucked from the distributor. Since the suction hole and the suction pipe are interference fit, the wall thickness between the cylinder suction hole and the cylinder end face should also be kept relatively thick to ensure the safety and reliability of the parts. Generally, the wall thickness of the suction pipe is fixed, and the limit size of the cylinder wall thickness is also fixed. Therefore, further reducing the compressor cylinder height will cause the suction hole of the compressor to be very small. In particular, when the cylinder height is reduced to 11 mm or below, the size of the suction hole is very small, which has a greater impact on the energy efficiency of the compressor.

[0121] The two small-displacement twin-cylinder compressors of the present invention not only solve the problem that the energy efficiency of the original twin-cylinder compressors is worse than that of the single-cylinder, but also give full play to the advantages of the twin-cylinder technology and achieve the energy efficiency of the twin-cylinder compressor surpassing that of the single-cylinder. Combined with the advantages of the twin-cylinder compressors such as low vibration, high-frequency and stable operation, the product advantages are obvious.

[0122] The present invention also provides a compressor, which comprises the above compressor pump body structure.

[0123] The present invention realizes a single-cylinder / double-cylinder small cylinder height design while ensuring the size of the air intake hole, greatly improving the energy efficiency of the compressor. It solves the following problems:

[0124] 1. The problem of limited opening of suction holes in small cylinders and high cylinders affecting the energy efficiency of the compressor;

[0125] 2. Small-displacement twin-cylinder compressors cannot select a more appropriate cylinder height, resulting in poor energy efficiency.

[0126] The present invention also provides an air conditioner, which comprises the aforementioned compressor.

[0127] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A compressor pump body structure, characterized in that: include: A cylinder (1) and a connecting portion (2), wherein the cylinder (1) has a working chamber (3) inside, the connecting portion (2) is arranged at one axial end of the cylinder (1), and an air intake passage (4) is also arranged on the connecting portion (2), the air intake passage (4) is connected to the working chamber (3) so as to be able to intake air into the cylinder (1), and the aperture of the air intake passage (4) is D, the axial height of the cylinder (1) is H, and HD is ≤ 1 mm.

2. The compressor pump body structure according to claim 1, characterized in that: The cylinder (1) is also provided with an air supply channel (5), which is provided on an axial end face of the cylinder (1) facing the connecting portion (2), one end of the air supply channel (5) being connected to the working chamber (3) of the cylinder (1), and the other end of the air supply channel (5) being connected to the air intake channel (4) on the connecting portion (2), so as to form an air intake port of the cylinder (1).

3. The compressor pump body structure according to claim 2, characterized in that: The axial height of the cylinder (1) is H, and satisfies H≤11.5 mm.

4. The compressor pump body structure according to claim 2, characterized in that: The connecting portion (2) is also provided with a second air supply channel (9), the second air supply channel (9) being connected between the air intake channel (4) and the first air supply channel (5), and the extension direction of the air intake channel (4) is different from the extension direction of the second air supply channel (9).

5. The compressor pump body structure according to claim 4, characterized in that: In the longitudinal cross section, the width of the air supply channel 1 (5) is the dimension perpendicular to the gas flow direction therein, the width of the air supply channel 2 (9) is the dimension perpendicular to the gas flow direction therein, the air supply channel includes the air supply channel 1 (5) and the air supply channel 2 (9), and the width L of the air supply channel is the largest width between the width of the air supply channel 1 (5) and the width of the air supply channel 2 (9), the axial height of the cylinder (1) is H, and L≥0.75H.

6. The compressor pump body structure according to claim 4, characterized in that: One end of the air inlet passage (4) is located on the outer peripheral wall of the connecting portion (2), and the other end extends toward the interior of the connecting portion (2) to communicate with the second air supply passage (9), and the second air supply passage (9) extends along the axial direction of the connecting portion (2), or extends along a direction with an axial angle of less than 90° with the connecting portion (2).

7. The compressor pump body structure according to claim 6, characterized in that: The air supply channel 1 (5) is a cutout formed on the axial end face of the cylinder (1) on one side facing the connecting portion (2) and on the axial end face of the cylinder (1) on the other side, and the air supply channel 2 (9) is a cutout formed on the axial end face of the connecting portion (2) on one side facing the cylinder (1) and on the axial end face of the connecting portion (2) on the other side.

8. The compressor pump body structure according to claim 7, characterized in that: The air supply channel 1 (5) penetrates from one axial end surface of the cylinder (1) to the other axial end surface; or, the air supply channel 1 (5) does not penetrate both axial end surfaces of the cylinder (1), and the bottom surface of the cut formed by the air supply channel 1 (5) on the cylinder (1) is a beveled surface, and the normal line of the beveled surface faces the connecting portion (2); The second air supply channel (9) does not penetrate the two axial end surfaces of the connecting portion (2): the cut formed by the second air supply channel (9) on the connecting portion (2) is a straight cut extending along the axial direction of the connecting portion (2), or the cut formed by the second air supply channel (9) on the connecting portion (2) is an oblique cut, the bottom surface of the oblique cut is an oblique cut surface, and the normal line of the oblique cut surface faces the cylinder (1).

9. The compressor pump body structure according to any one of claims 4 to 8, characterized in that: The flow cross-sectional area of ​​the second air supply channel (9) is greater than the flow cross-sectional area of ​​the air inlet channel (4).

10. The compressor pump body structure according to any one of claims 4 to 9, characterized in that: The cylinder (1) is one, forming a single-cylinder compressor, and further comprises a first flange (6) and a second flange (7), wherein the first flange (6) is located at one axial end of the cylinder (1), and the second flange (7) is located at the other axial end of the cylinder (1); the second flange (7) is provided with the air inlet passage (4) and the second air supply passage (9).

11. The compressor pump body structure according to any one of claims 4 to 9, characterized in that: The cylinders (1) are two in number, forming a dual-cylinder compressor, comprising a first cylinder (11) and a second cylinder (12); the compressor pump body structure further comprises a first flange (6), a second flange (7) and a partition (8); the first flange (6) is located at one axial end of the first cylinder (11), the second flange (7) is located at the other axial end of the second cylinder (1), and the first cylinder (11) and the second cylinder (12) are connected via the partition (8); The connecting portion (2) includes the first flange (6), the second flange (7) and at least one of the partition (8); an air intake passage of the first cylinder (11) is opened on at least one of the first flange (6) and the partition (8); and an air intake passage of the second cylinder (12) is opened on at least one of the second flange (7) and the partition (8).

12. The compressor pump body structure according to claim 11, characterized in that: The air intake channel (4) is opened on the partition (8); the air supply channel 1 (5) includes a first air supply channel 1 (51) opened on the first cylinder (11) and a second air supply channel 1 (52) opened on the second cylinder (12); the air supply channel 2 (9) includes a first air supply channel 2 (91) opened on the partition (8) and a second air supply channel 2 (92) opened on the partition (8); the first air supply channel 1 (51) and the first air supply channel 2 (91) are connected to form a first air supply channel (13); the first air supply channel (13) connects the air intake channel (4) and the working chamber of the first cylinder (11); the second air supply channel 1 (52) and the second air supply channel 2 (92) are connected to form a second air supply channel (14); the second air supply channel (14) connects the air intake channel (4) and the working chamber of the second cylinder (12).

13. The compressor pump body structure according to claim 11, characterized in that: The air intake passage (4) comprises a first air intake passage (41) and a second air intake passage (42), wherein the first air intake passage (41) is opened on the first flange (6), and the second air intake passage (42) is opened on the second flange (7), the air supply passage 1 (5) comprises a first air supply passage 1 (51) opened on the first cylinder (11) and a second air supply passage 1 (52) opened on the second cylinder (12), and the air supply passage 2 (9) comprises a first air supply passage 2 (91) opened on the first flange (6) and a second air supply passage 2 (92) opened on the second cylinder (12), A second air supply channel 2 (92) on the second flange (7), the first air supply channel 1 (51) and the first air supply channel 2 (91) are connected to form a first air supply channel (13), the second air supply channel 1 (52) and the second air supply channel 2 (92) are connected to form a second air supply channel (14), the first air supply channel (13) is connected to the first air intake channel (41) and the working chamber of the first cylinder (11), and the second air supply channel (14) is connected to the second air intake channel (42) and the working chamber of the second cylinder (12).

14. The compressor pump body structure according to claim 12 or 13, characterized in that: The first air supply channel (13) and the second air supply channel (14) are both extended at an inclination. In a longitudinal section, an angle between an extension direction of the first air supply channel (13) and an axial end face of the first cylinder (11) is 30° to 60°, and an angle between an extension direction of the second air supply channel (14) and an axial end face of the second cylinder (12) is 30° to 60°.

15. The compressor pump body structure according to claim 12, characterized in that: The diameter of the air inlet channel (4) is D, and the diameters of the first air supply channel (13) and the second air supply channel (14) are both d, satisfying: 1.1≤D / d≤1.5; and / or, The first air supply channel (13) has a minimum distance A from the first flange (6) in the axial direction of the first cylinder (11), satisfying: 0.5 mm ≤ A ≤ 2 mm; the second air supply channel (14) has a minimum distance A from the second flange (7) in the axial direction of the second cylinder (12), satisfying: 0.5 mm ≤ A ≤ 2 mm; and / or, The thickness of the partition (8) in the axial direction is Hp, and the heights of the first cylinder (11) and the second cylinder (12) in the axial direction are both H, satisfying Hp / H≥1.

25.

16. The compressor pump body structure according to claim 11, characterized in that: The axial heights of the first cylinder (11) and the second cylinder (12) are both H, and H≤10.5 mm.

17. A compressor, characterized in that: A compressor pump body structure comprising any one of claims 1-16.

18. An air conditioner, characterized in that: Comprising the compressor of claim 17.

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