阅读说明：本技术 滚动转子式压缩机气缸及压缩机 (Rolling rotor type compressor cylinder and compressor ) 是由 王艳珍 李媛媛 刘春慧 于 2020-05-19 设计创作，主要内容包括：本发明提供了一种滚动转子式压缩机气缸及压缩机,所述滚动转子式压缩机气缸包括缸体,一活塞在所述缸体内旋转,配合叶片将所述缸体的内部空间分割为吸气腔与压缩腔；所述气缸还包括一吸气孔,设置于所述缸体,且连通所述吸气腔；所述吸气孔具有一干流流道,所述干流流道在靠近所述气缸内壁的位置延展出一支流流道,自所述支流流道流入的冷媒朝着远离所述吸气孔且与冷媒在气缸内部的旋转方向一致的方向,进入所述吸气腔中；本申请可减少气缸吸气阻力损失,进而降低压缩机能耗；同时改善刚吸入气缸的气体对活塞的撞击影响,进而提高压缩机效率。(The invention provides a rolling rotor type compressor cylinder and a compressor, wherein the rolling rotor type compressor cylinder comprises a cylinder body, a piston rotates in the cylinder body, and the internal space of the cylinder body is divided into a suction cavity and a compression cavity by matching with blades; the cylinder also comprises an air suction hole which is arranged on the cylinder body and communicated with the air suction cavity; the air suction hole is provided with a main flow channel, the main flow channel extends out of a branch flow channel at a position close to the inner wall of the air cylinder, and a refrigerant flowing in from the branch flow channel enters the air suction cavity in a direction which is far away from the air suction hole and is consistent with the rotation direction of the refrigerant in the air cylinder; the air suction resistance loss of the air cylinder can be reduced, and the energy consumption of the compressor is further reduced; meanwhile, the impact influence of the gas just sucked into the cylinder on the piston is improved, and the efficiency of the compressor is further improved.)

1. A cylinder of a rolling rotor compressor comprises a cylinder body (103), a piston (101) rotates in the cylinder body (103), and a blade (102) is matched to divide the inner space of the cylinder body (103) into a suction cavity (107) and a compression cavity (108); characterized in that, the cylinder still includes:

an air suction hole (104) which is provided in the cylinder (103) and communicates with the air suction chamber (107); the air suction hole (104) is provided with a main flow channel (201), the main flow channel (201) extends out of a branch flow channel (202) at a position close to the inner wall of the cylinder, and a refrigerant flowing in from the branch flow channel (202) enters the air suction cavity (107) in a direction which is far away from the air suction hole and is consistent with the rotation direction of the refrigerant in the cylinder.

2. A cylinder of a rolling rotor compressor according to claim 1, wherein the refrigerant flowing from the branch flow path (202) into the suction chamber (107) has at least a state of being injected into a distal end of the suction chamber (107) away from the suction hole (104) while avoiding the piston (101).

3. Cylinder of a rolling rotor compressor according to claim 1, characterized in that the wall of the suction opening (104) on the side of the area of the branch flow channel (202) is recessed in a predetermined direction, said predetermined direction corresponding to the direction of rotation of the refrigerant inside the cylinder block (103).

4. A cylinder of a rolling rotor compressor according to claim 1, wherein a projection of a wall of the suction port (104) on a side of a region where the branch flow passage (202) is located on a plane of an upper surface of the cylinder block (103) is a first line segment, a projection of an outer surface of the piston (101) on the plane of the upper surface of the cylinder block (103) is a first contour line, and a clearance passage is formed between an extension line of the first line segment and a tangent line of the first contour line in a partial state of the piston (101).

5. A cylinder of a rolling rotor compressor according to claim 3, wherein a wall of the suction hole (104) on a side of a region where the branch flow path (202) is located is recessed toward the predetermined direction by chamfering.

6. Cylinder for a rolling rotor compressor, according to claim 4, characterized in that said cylinder block (103) is further provided with a spring hole (105), the line of said first section being parallel to the centre line of said spring hole (105).

7. Cylinder for a rolling rotor compressor, according to claim 1, characterized in that said cylinder block (103) is provided with vane slots (106) and spring holes (105), said vane slots (106) being in communication with said spring holes (105), said spring holes (105) being provided with springs for pressing said vanes (102) against the outer surface of said piston (101).

8. Rolling rotor compressor cylinder according to claim 7, characterised in that the centre line of the spring bore (105) and the spring are located on the centre plane of the vane slot (106).

9. Rolling rotor compressor cylinder according to claim 6, characterised in that the centre line of the spring hole (105) passes through the centre of the cylinder block (103).

10. A compressor, characterized in that it comprises a cylinder of a rolling rotor compressor according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of rolling rotor compressors, in particular to a cylinder of a rolling rotor compressor and a compressor.

Background

The rolling rotor compressor belongs to a positive displacement compressor and mainly comprises a shell, a motor, a crankshaft, a piston, a cylinder, blades and the like. The piston is located in the cylinder, and when the crankshaft rotates around the rotation center, the piston clings to the inner surface of the cylinder to perform rotary motion. Therefore, a crescent space can be formed between the outer surface of the piston and the inner surface of the cylinder. The blades reciprocating up and down divide the space into two independent parts, one part is a suction cavity, and the other part is a compression cavity. The vanes are pressed against the outer surface of the piston by means of springs.

In the prior art rolling rotor compressor, the center line of the suction hole of the cylinder is opposite to the center of the cylinder (as shown in figure 1). Under the structure, when in air suction, the air is radially injected into the cylinder from the air suction hole, directly collides with the piston and then moves anticlockwise along the circumferential direction of the outer wall of the piston and the inner wall of the cylinder. The gas flow direction is changed from the radial direction of the cylinder to the circumferential direction of the cylinder, the flow resistance loss is very large, namely the suction resistance loss is large, the refrigerating capacity of the compressor is reduced, and the efficiency is reduced.

Disclosure of Invention

In view of the above, the present invention provides a rolling rotor compressor cylinder and a compressor, which can reduce the air suction resistance loss of the cylinder, and further reduce the energy consumption of the compressor; meanwhile, the impact influence of the gas just sucked into the cylinder on the piston is improved, and the efficiency of the compressor is further improved.

According to one aspect of the present invention, there is provided a rolling rotor compressor cylinder, comprising a cylinder body, a piston rotating in the cylinder body, and a vane separating an inner space of the cylinder body into a suction chamber and a compression chamber; the cylinder includes:

the air suction hole is arranged in the cylinder body and communicated with the air suction cavity; the air suction hole is provided with a main flow channel, the main flow channel extends out of a branch flow channel at a position close to the inner wall of the air cylinder, and the refrigerant flowing in from the branch flow channel enters the air suction cavity in a direction which is far away from the air suction hole and is consistent with the rotation direction of the refrigerant in the air cylinder.

Preferably, the refrigerant flowing from the branch flow passage into the suction chamber has at least a state of being ejected to a distal end of the suction chamber away from the suction hole while avoiding the piston.

Preferably, a hole wall of the suction hole on one side of the region where the branch flow channel is located is recessed towards a preset direction, and the preset direction is consistent with a rotation direction of the refrigerant in the cylinder body.

Preferably, a projection of a hole wall of the suction hole on one side of an area where the branch flow channel is located on a plane where the upper surface of the cylinder body is located is a first line segment, a projection of the outer surface of the piston on the plane where the upper surface of the cylinder body is located is a first contour line, and in a partial state of the piston, a clearance channel is formed between an extension line of the first line segment and a tangent line of the first contour line.

Preferably, a hole wall of the suction hole on one side of the region where the branch flow channel is located is recessed towards the preset direction through a chamfer.

Preferably, the cylinder body is further provided with a spring hole, and a straight line where the first line section is located is parallel to a center line of the spring hole.

Preferably, a vane groove and a spring hole are formed in the cylinder body, the vane groove is communicated with the spring hole, and a spring used for pressing the vane on the outer surface of the piston is arranged in the spring hole.

Preferably, the center line of the spring hole and the spring are located on the center plane of the vane slot.

Preferably, a center line of the spring hole passes through a center of the cylinder.

According to another aspect of the invention, a compressor is provided, which comprises a rolling rotor compressor cylinder as described in any one of the above.

Compared with the prior art, the invention has the beneficial effects that:

according to the rolling rotor type compressor cylinder and the compressor, the branch flow channel which can enable the refrigerant to flow to avoid the piston is formed in the air suction hole, the partial refrigerant can be directly sprayed to the far end of the air suction cavity and does not radially enter the cylinder to directly collide with the piston, and the change degree of the flow direction of the partial refrigerant is smaller than that of the prior art, so that the air suction resistance of the cylinder is reduced, the energy consumption of the compressor is reduced, and the refrigerating capacity and the refrigerating efficiency of the compressor are improved; on the other hand, the impact force of gas entering the cylinder on the piston is reduced, so that the blocking effect of the impact force on the rotation of the piston is reduced, and the efficiency of the compressor is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a cylinder of a rolling rotor compressor in the prior art;

fig. 2 is a schematic structural diagram of a cylinder of the rolling rotor compressor disclosed in the present embodiment;

fig. 3 is a sectional view showing a structural schematic view of a cylinder of the rolling rotor type compressor disclosed in fig. 2;

fig. 4 is another schematic structural diagram of the cylinder of the rolling rotor compressor disclosed in the present embodiment;

fig. 5 is another schematic structural diagram of the cylinder of the rolling rotor compressor disclosed in this embodiment.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "having," and "providing" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

Fig. 1 is a schematic structural diagram of a cylinder of a rolling rotor compressor in the prior art. As shown in fig. 1, in the prior art, when a rolling rotor compressor is operated, gas enters a cylinder from a gas suction hole 104, a motor drives a crankshaft, the crankshaft drives a piston to perform a rotary motion, so as to compress the gas, and the compressed high-pressure gas is discharged from the cylinder through a gas discharge port and enters a compressor shell. When the rolling rotor compressor sucks air, the gaseous refrigerant is injected into the cylinder from the air suction hole 104 along the radial direction, directly collides with the piston 101 and moves anticlockwise along the outer wall of the piston 101 and the inner wall of the cylinder in the circumferential direction. Therefore, the compressor needs extra work to change the gas flow direction from the cylinder radial direction to the cylinder circumferential direction, and the flow resistance loss is large, resulting in the improvement of the suction energy consumption of the compressor and the reduction of the suction efficiency.

Fig. 2 to 5 are schematic structural diagrams of a cylinder of a rolling rotor compressor disclosed in the present application. As shown in fig. 2 to 5, the present invention discloses a cylinder of a rolling rotor type compressor, which is applied to a compressor, that is, a rolling rotor type compressor. The rolling rotor compressor includes a piston 101, and the piston 101 rotates in the cylinder and divides an internal space of the cylinder into an intake chamber 107 and a compression chamber 108 by engaging vanes 102.

The above-mentioned cylinder that this embodiment disclosed includes: a cylinder 103 and an air-suction hole 104. The intake hole 104 is provided in the cylinder 103 and communicates with the intake chamber 107. The suction hole 104 is a through hole penetrating the cylinder body 103 of the cylinder. As shown in fig. 4 and 5, the suction hole 104 has a main flow passage 201. The main flow passage 201 extends to form a branch flow passage 202 near the inner wall of the cylinder. The refrigerant flowing from the branch flow passage 202 enters the intake chamber 107 in a direction away from the intake hole and aligned with the rotation direction of the refrigerant in the cylinder.

Specifically, an intake port 203 is formed at the intersection of the intake hole 104 and the cylinder inner wall, and the refrigerant flowing through the branch flow passage 202 enters the intake chamber 107 through the intake port 203. The refrigerant flowing in from the branch flow passage 202 enters the suction chamber 107 in a direction away from the suction port 203 and in a direction corresponding to the rotational direction of the refrigerant in the cylinder, as indicated by the single-direction arrows in fig. 4 and 5. This ensures that the refrigerant flowing into the suction chamber 107 from the branch flow passage 202 is ejected to the distal end of the suction chamber 107 away from the suction hole 104 while avoiding the piston 101.

In this embodiment, the intake hole 104 includes a first section and a second section connected in series along the intake direction of the cylinder. The branch flow path 202 is located in the second section. In the first stage, the refrigerant flows through the main flow channel 201. After the refrigerant enters the second section, the gaseous refrigerant in the second section is divided into two directions, namely a main flow channel 201 and a branch flow channel 202. The gaseous refrigerant flowing through the main flow channel 201 enters the suction cavity along the length direction of the suction hole 104 and is directly injected to the outer surface of the piston 101. The refrigerant circulating in the branch flow channel 202 can completely avoid the piston 101 in some states during the rotation of the piston, so that the gaseous refrigerant in the branch flow channel 202 can flow into the cylinder 103 more smoothly, and then flows in the circumferential direction in the counterclockwise direction, so that the change degree of the flow direction of the partial refrigerant is smaller, the impact of the gaseous refrigerant on the piston 101 is avoided, and the suction loss is reduced.

In this embodiment, the cross-sectional area of the second stage is larger than the cross-sectional area of the first stage in the height direction of the cylinder 103. The wall of the suction hole 104 on the side of the region where the branch flow path 202 is located is recessed in a predetermined direction by a chamfer. The predetermined direction coincides with a rotation direction of the refrigerant in the cylinder 103. Specifically, a port of the suction hole 104 located on the inner wall of the cylinder 103 is opened with a notch along the circumferential direction of the inner wall of the cylinder 103 to form the branch flow channel 202, and preferably, the aperture of the notch is gradually reduced toward the flow direction of the refrigerant, i.e., in the counterclockwise direction. In the top view of the views disclosed in fig. 2 and 3, the refrigerant flows in the circumferential direction in the counterclockwise direction inside the cylinder 103. Therefore, the rotation direction of the refrigerant in the cylinder 103 is also the counterclockwise direction. In a top view of the views disclosed in fig. 2 and 3, the wall of the suction hole 104 on the side of the region where the branch flow channel 202 is located is recessed toward the left side, so that the refrigerant flowing through the branch flow channel 202 can more smoothly enter the cylinder.

As shown in fig. 5, in the present embodiment, a projection of a hole wall of the intake hole 104 on a side of a region where the branch flow passage 202 is located on a plane of an upper surface of the cylinder 103 is a first line segment, a projection of an outer surface of the piston 101 on the plane of the upper surface of the cylinder 103 is a first contour line, and in a partial state of the piston 101, a clearance passage 204 is formed between an extension line of the first line segment and a tangent line of the first contour line. The clearance channel 204 allows the refrigerant to be directly injected into the suction chamber at the distal end thereof away from the suction hole 104, thereby reducing suction loss.

In the area of the clearance passage 204, the distance between the inner walls of the cylinder 103 on both sides in the first direction gradually increases in the second direction. The first direction is an extending direction of the vane groove 106 in the longitudinal direction. The second direction is perpendicular to the first direction and is directed from the suction hole 104 to the spring hole 105.

In this embodiment, the cylinder 103 is provided with a spring hole 105 and a vane groove 106. The vane groove 106 communicates with the spring hole 105. A spring for pressing the vane 102 against the outer surface of the piston 101 is provided in the spring hole 105. The center line of the spring hole 105 and the spring are located on the center plane of the vane groove 106. The center line of the spring hole 105 passes through the center of the cylinder 103.

As a preferred embodiment of the present application, the straight line on which the first line segment is located is parallel to the center line of the spring hole 105.

An embodiment of the present invention further provides a compressor, where the compressor includes the rolling rotor compressor cylinder disclosed in any of the above embodiments, and the detailed structural features and advantages of the rolling rotor compressor cylinder may refer to the description of the above embodiments, and are not described herein again.

In summary, the rolling rotor compressor cylinder and the compressor of the invention have at least the following advantages:

according to the rolling rotor type compressor cylinder and the compressor disclosed by the embodiment, the branch flow channel which can enable the refrigerant to flow to avoid the piston is formed in the air suction hole, the partial refrigerant can be directly sprayed to the far end of the air suction cavity and does not radially enter the cylinder to directly collide with the piston, so that the change degree of the flow direction of the partial refrigerant is smaller than that of the prior art, the air suction resistance of the cylinder is reduced, the energy consumption of the compressor is reduced, and the refrigerating capacity and the refrigerating efficiency of the compressor are improved; on the other hand, the impact force of gas entering the cylinder on the piston is reduced, so that the blocking effect of the impact force on the rotation of the piston is reduced, and the efficiency of the compressor is improved.

In the description of the present invention, it is to be understood that the terms "bottom", "longitudinal", "lateral", "upper", "lower", "front", "rear", "vertical", "horizontal", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplification of description, and do not indicate or imply that the structures or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more and "several" means one or more unless otherwise specified.

In the description herein, references to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.