Flat sliding vane compressor

Abstract

A flattened sliding vane compressor comprises an air cylinder, a compression cavity formed in the air cylinder and a sliding vane rotor located in the compression cavity, the sliding vane rotor comprises a rotor shaft and a sliding vane assembly, a sliding groove penetrating through the rotor shaft along the diameter is formed in the rotor shaft, the sliding vane assembly is slidably arranged in the sliding groove in a penetrating mode, and the sliding vane assembly comprises a first vane, a middle vane and a second vane. The first blade and the second blade are clamped with the middle blade and are in sliding fit with the middle blade; the first blade and the second blade are located on the same side of the middle blade. Compared with the prior art, the flattened sliding vane compressor provided by the utility model has the following advantages that the structure greatly improves the stretching amplitude of the sliding vane assembly and the rigidity during extension, and compared with the sliding vane compressor in the prior art, the flattened sliding vane compressor can shorten the axial size by enlarging the radial size of the compression cavity, so that the compression efficiency is improved. The compression cavity with the same volume is achieved, flattening design of the air cylinder is facilitated, the height of the compressor is reduced, and the compressor is suitable for occasions with limited upper and lower spaces.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, concretely relates to a flat vane compressor, and is suitable for the occasion of limited upper and lower space. BACKGROUND

[0002] The existing rotor compressor is represented by a vane compressor, and the rotor generally comprises a rotating shaft, a support body arranged on the rotating shaft, a plurality of slide grooves for accommodating blades arranged on the support body, and blades slidably arranged in the slide grooves. The rotor rotates eccentrically in the compression chamber, and the blades expand and contract in the slide grooves according to the distance between the blades and the wall of the compression chamber during rotation. Compared with cam rotors or other forms of rotor compressors, the compression efficiency of the blade rotor is higher in the compression chamber of the same volume.

[0003] However, the vane assembly of the existing vane compressor is mostly a two-blade adhering structure, which limits the expansion ratio of the vane assembly. The maximum expansion ratio cannot be greater than the sum of the lengths of the two blades, and the compression ratio can only be increased in the longitudinal space of the compression chamber, but cannot be increased in the transverse space of the compression chamber. This is not flexible and applicable in some application occasions, especially in environments with limited upper and lower space. The existing compressor design has certain limitations in space utilization, and it is difficult to meet the needs of specific occasions. Therefore, a new type of compressor design is needed to efficiently operate in a limited space. SUMMARY

[0004] The utility model aims at overcoming the insufficient prior art, and provides a flat vane compressor with small volume and high compression power.

[0005] The main technical scheme of the flat vane compressor provided by the utility model is as follows: a cylinder, a compression chamber arranged in the cylinder, a vane rotor located in the compression chamber, an air inlet and an air outlet arranged on the cylinder and communicating with the compression chamber, a rotor shaft and a vane assembly, a slide groove penetrating the rotor shaft along the diameter, the vane assembly being slidably arranged in the slide groove, the vane assembly comprising a first blade, a middle blade and a second blade, the first blade and the second blade being clamped and slidably connected with the middle blade, and the first blade and the second blade being located on the same side of the middle blade.

[0006] The flat vane compressor provided by the utility model also adopts the following auxiliary technical scheme:

[0007] Preferably, the ratio of the diameter to the height of the compression chamber is 1.5:1-5:1.

[0008] Preferably, the minimum length of the vane assembly in the compression chamber is the sum of the lengths of the first blade and the second blade.

[0009] Preferably, the middle blade is provided with a clamping groove on one side, and the first blade and the second blade are both provided with clamping blocks, and the clamping blocks on the first blade and the second blade are both clamped and slidingly matched with the clamping groove on the middle blade.

[0010] Preferably, the clamping groove is a dovetail groove, and the clamping block is a dovetail block.

[0011] Preferably, the first blade and the second blade are identical in structure, and each comprises an end portion, a connecting portion and a clamping block provided on one side of the end portion, one side of the clamping block is connected with the connecting portion, and the sum of the thickness of the clamping block and the thickness of the connecting portion is less than the thickness of the end portion.

[0012] Preferably, the length of the first blade and the length of the second blade are both less than the length of the middle blade, and the sum of the length of the first blade and the length of the second blade is greater than the length of the middle blade.

[0013] Preferably, the length of the first blade and the length of the second blade are both greater than or equal to the length of the sliding groove.

[0014] Compared with the prior art, the flat sliding vane compressor has the following advantages: the sliding vane assembly in the utility model is composed of three blades, and the first blade and the second blade are both located on the same side of the middle blade, the structure greatly improves the expansion range and the rigidity when being elongated, compared with the sliding vane compressor in the prior art, the utility model can expand the radial dimension of the compression chamber and shorten the axial dimension to realize the compression chamber with the same volume, which is helpful for the flat design of the cylinder and reduces the height of the compressor, so that it is applicable to the occasions with limited upper and lower space; the three-blade sliding connection mode of the sliding vane improves the operation efficiency and stability of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure diagram after removing the upper part of the cylinder in the utility model.

[0016] Figure 2 It is a structure diagram of the sliding vane assembly in the utility model.

[0017] Figure 3 It is a structure diagram of the first blade in the utility model.

[0018] Figure 4 It is a structure diagram of the middle blade in the utility model.

[0019] Figure 5 It is a structure diagram of the cylinder body in the utility model. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail in combination with the drawings and specific embodiments.

[0021] The slide vane compressor generally comprises a casing, a motor and a cylinder arranged in the casing, the cylinder is provided with a compression chamber, the compression chamber is provided with a slide vane rotor, the motor drives the slide vane rotor to rotate in the compression chamber, the cylinder is provided with an air inlet and an air outlet communicating with the compression chamber, the slide vane rotor comprises a rotor shaft and a first vane and a second vane slidably arranged on the rotor shaft, the rotor shaft is provided with a sliding groove penetrating through the rotor shaft along the diameter, and the first vane and the second vane are slidably arranged in the sliding groove; the cylinder is provided with a shaft hole, one end of the rotor shaft is connected with the motor, and the other end of the rotor shaft penetrates through the shaft hole and enters the compression chamber; the side wall of the rotor shaft abuts against the inner wall of the compression chamber to form an abutting portion, and the abutting portion is located between the air inlet and the air outlet of the compression chamber. The casing, the motor and the assembly relationship are all mature technologies in the prior art, and will not be described in detail here.

[0022] Referring to Figures 1 to 5 , according to the flat slide vane compressor embodiment provided by the utility model, comprising a cylinder 1, a compression chamber 11 arranged in the cylinder 1, a slide vane rotor located in the compression chamber 11, the cylinder 1 is provided with an air inlet 12 and an air outlet 13 communicating with the compression chamber 11, the slide vane rotor comprises a rotor shaft 2 and a slide vane assembly, the rotor shaft 2 is provided with a sliding groove 21 penetrating through the rotor shaft 2 along the diameter, and the slide vane assembly is slidably arranged in the sliding groove 21, the slide vane assembly comprises a first vane 3, a middle vane 4 and a second vane 5, the first vane 3 and the second vane 5 are clamped and slidably connected with the middle vane 4; the first vane 3 and the second vane 5 are located on the same side of the middle vane 4. The slide vane assembly in the utility model is composed of three vanes, and the first vane 3 and the second vane 5 are located on the same side of the middle vane 4, which greatly improves the expansion range and the rigidity when being elongated, compared with the slide vane compressor in the prior art, the utility model can expand the radial size and shorten the axial size to realize the same volume of the compression chamber, which is helpful for the flat design of the cylinder 1, reduces the height of the compressor, and makes it suitable for occasions with limited space; the three-vane sliding connection mode of the slide vane improves the operation efficiency and stability of the compressor.

[0023] Referring to Figure 1 and Figure 5 , according to the above embodiment of the utility model, the ratio of the diameter to the height of the compression chamber 11 is 1.5:1-5:1. The preferred embodiment is 4:1. By optimizing the aspect ratio, the compressor can maintain high efficiency while further reducing the volume.

[0024] Referring to Figures 1 to 4According to the embodiment of the utility model above, the minimum length of the sliding vane assembly in the compression cavity 11 is the sum of the lengths of the first vane 3 and the second vane 5. The length of the first vane 3 and the length of the second vane 5 are both smaller than the length of the middle vane 4, and the sum of the lengths of the first vane 3 and the second vane 5 is greater than the length of the middle vane 4. The three vanes are connected through clamping and sliding fit, and the length dimensions are distributed as described above, which ensures the flexible change of the expansion range of the sliding vane assembly when rotating in the compression cavity 11, and also ensures the overall strength of the sliding vane assembly at the maximum length.

[0025] Referring to Figures 1 to 4 According to the embodiment of the utility model above, the middle vane 4 is provided with a clamping groove 41 on one side, and the first vane 3 and the second vane 5 are both provided with a clamping block 31. The clamping block 31 on the first vane 3 and the second vane 5 is clamped and slidably fitted with the clamping groove 41 on the middle vane 4. The end portion 32 of the clamping block 31 has a width greater than the root width of the clamping block 31, and the bottom width of the clamping groove 41 is greater than the mouth width of the clamping groove 41, which can complete the clamping and sliding fit of the clamping groove 41 and the clamping block 31, facilitate processing and assembly, and help to simplify the components and reduce production costs.

[0026] Referring to Figures 2 to 4 According to the embodiment of the utility model above, the clamping groove 41 is a dovetail groove, and the clamping block 31 is a dovetail block. With this structure, the contact area between the clamping groove 41 and the clamping block 31 can be reduced under the condition of clamping and sliding fit between the clamping groove 41 and the clamping block 31, thereby reducing the resistance when the two are slidably fitted.

[0027] Referring to Figures 1 to 4 According to the embodiment of the utility model above, the first vane 3 and the second vane 5 have the same structure, both including an end portion 32, a connecting portion 33 provided on one side of the end portion 32, and a clamping block 31. One side of the clamping block 31 is connected with the connecting portion 33, and the sum of the thickness of the clamping block 31 and the thickness of the connecting portion 33 is smaller than the thickness of the end portion 32. The first vane 3 and the second vane 5 with the same structure facilitate the processing and assembly of components and save the production cost of parts.

[0028] Referring to Figures 1 to 4 According to the embodiment of the utility model above, the length of the first vane 3 and the length of the second vane 5 are both greater than or equal to the length of the sliding groove 21. In this embodiment, the length of the first vane 3 and the length of the second vane 5 are both equal to the length of the sliding groove 21. When the rotor shaft 2 drives the sliding vane assembly to rotate, the edge of the mouth of the sliding groove 21 of the rotor shaft 2 only exerts force on one of the three vanes, that is, one vane is completely attached to the inner side wall of one side of the sliding groove 21. Under the condition of satisfying the maximum expansion range of the sliding vane assembly, the connection strength between the three vanes is also ensured.

[0029] The above technical solutions provided by the utility model are described in detail, and the principles and implementation manners of the utility model are described by applying specific examples, and the above example is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation manners and application ranges will be changed according to the idea of the utility model, and the above description should not be understood as the limitation of the utility model.

Claims

1. A flat vane compressor, comprising a cylinder, a compression chamber disposed within the cylinder, and a vane rotor located within the compression chamber, wherein the cylinder is provided with an inlet and an outlet communicating with the compression chamber, the vane rotor comprising a rotor shaft and a vane assembly, the rotor shaft being provided with a groove extending through the rotor shaft along its diameter, and the vane assembly being slidably disposed within the groove, characterized in that: The sliding vane assembly includes a first blade, a middle blade, and a second blade. Both the first blade and the second blade are engaged with and slidably fitted with the middle blade. Both the first blade and the second blade are located on the same side of the middle blade.

2. The flattened vane compressor according to claim 1, characterized in that, The ratio of the diameter to the height of the compression chamber is 1.5:1 to 5:

1.

3. The flattened vane compressor according to claim 1, characterized in that, The minimum length of the sliding vane assembly within the compression chamber is the sum of the lengths of the first and second vanes.

4. The flattened vane compressor according to claim 1, characterized in that, A slot is provided on one side of the middle blade, and a locking block is provided on both the first and second blades. The locking blocks on the first and second blades are engaged with and slidably fitted into the slot on the middle blade.

5. The flattened vane compressor according to claim 4, characterized in that, The slot is a dovetail groove, and the block is a dovetail block.

6. The flattened vane compressor according to claim 4, characterized in that, The first and second blades have the same structure, both including an end, a connecting part located on one side of the end, and a locking block. One side of the locking block is connected to the connecting part, and the sum of the thickness of the locking block and the thickness of the connecting part is less than the thickness of the end.

7. The flattened vane compressor according to claim 1, characterized in that, The lengths of the first and second blades are both less than the length of the middle blade, but the sum of the lengths of the first and second blades is greater than the length of the middle blade.

8. The flattened vane compressor according to claim 1, characterized in that, The lengths of both the first and second blades are greater than or equal to the length of the groove.

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