Pump body assembly of rotary compressor, rotary compressor and refrigeration equipment

Abstract

The present application relates to the technical field of compressors, and provides a pump body assembly of a rotary compressor, a rotary compressor and a refrigeration device installed thereon. The pump body assembly includes: a cylinder having a hollow cavity and a vane groove connected to the hollow cavity; an upper flange and a lower flange, which are respectively sealed on the upper and lower sides of the cylinder; a vane, which is movably arranged in the vane groove; both the upper flange and the lower flange are provided with a flange groove, and the vane includes a vane body and a vane tail, and the upper and lower sides of the vane tail protrude from the upper and lower sides of the vane body and extend into the flange groove respectively, and an elastic member connected to the vane is arranged in the flange groove. The width of the wing at the vane tail is increased, and the flange grooves of the upper and lower flanges are matched to leave space for the design of multiple elastic members, and the multiple elastic members can increase the elastic force, thereby increasing the contact force between the vane and the rolling rotor, preventing the vane from separating from the rolling rotor, and avoiding the noise of the clattering sound.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a pump body assembly of a rotary compressor and a rotary compressor and refrigeration equipment installed with the pump body assembly. Background Art

[0002] The vane in a rotary compressor refers to a part installed in the vane groove of the cylinder, which can slide freely and always keep in contact with the rolling rotor under the action of spring force, thereby dividing the closed cavity formed by the cylinder and the rolling rotor into an intake cavity and an exhaust cavity.

[0003] When the rotary compressor is running, the vanes are subject to friction on both sides, gas pressure at both ends, inertia, spring force, and contact force of the rolling rotor. With the development of frequency conversion technology, the speed of variable frequency air conditioners is getting lower and lower. When the air conditioning system is running at light load and low frequency, the compressor inhales liquid, part of the refrigeration oil dissolves in the refrigerant, and the friction of the vanes increases; due to the influence of liquid gasification, the internal gas pressure of the vanes increases. At this time, the contact force of the rolling rotor is equal to or less than zero, and the vanes and the rolling rotor separate and collide periodically, resulting in a rattling sound. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a pump body assembly of a rotary compressor and a rotary compressor and refrigeration equipment installed with the pump body assembly.

[0005] In a first aspect, an embodiment of the present application provides a pump body assembly of a rotary compressor.

[0006] The pump body assembly of the rotary compressor provided in the embodiment of the present application includes:

[0007] A cylinder having a hollow cavity and a sliding vane groove communicating with the hollow cavity is provided on the cylinder;

[0008] An upper flange and a lower flange, respectively sealing covers on the upper and lower sides of the cylinder;

[0009] A slide, movably disposed in the slide slot;

[0010] The upper flange and the lower flange are both provided with flange sliding grooves, the sliding plate includes a sliding plate body and a sliding plate tail, the upper and lower sides of the sliding plate tail protrude from the upper and lower sides of the sliding plate body and extend into the flange sliding grooves respectively, and an elastic member connected to the sliding plate is arranged in the flange sliding groove.

[0011] Furthermore, the upper and lower sides of the tail of the slide are respectively formed with wings protruding from the slide body, and the wings extend into the flange sliding grooves respectively, and the elastic member is arranged between the upper flange or the lower flange and the wings.

[0012] Furthermore, the sliding vane groove extends from the outer wall surface to the hollow cavity along the radial direction of the cylinder.

[0013] Furthermore, the elastic member is a spring, and a spring hole is formed on the upper flange or the lower flange. The spring hole extends radially from the outer wall surface of the upper flange or the lower flange into the flange slide groove. The spring is located in the spring hole and one end abuts against the slide.

[0014] Furthermore, a spring tail groove is formed on a side of the wing away from the hollow cavity, and one end of the spring is connected to the spring tail groove.

[0015] Furthermore, a groove bottom hole which is connected with the flange sliding groove and the spring hole at the same time is formed on the upper flange or the lower flange.

[0016] Furthermore, a plurality of elastic members are arranged in the flange slide grooves on the upper flange and the lower flange.

[0017] Furthermore, the flange sliding groove and the elastic member in the upper flange are symmetrically arranged with the corresponding structure on the lower flange.

[0018] Furthermore, an elastic member is also provided between the middle position of the tail of the slide and the cylinder.

[0019] Furthermore, the pump assembly of the rotary compressor also includes a rolling rotor eccentrically mounted in the hollow cavity, whose outer cylindrical surface is tangent to the inner wall of the hollow cavity, and one end of the sliding vane is tightly fitted with the rolling rotor.

[0020] Furthermore, the pump body assembly of the rotary compressor also includes a crankshaft that passes through the upper flange, the rolling rotor and the lower flange in sequence, and the rolling rotor is sleeved outside the eccentric portion of the crankshaft.

[0021] Furthermore, the cylinder is formed with a radially penetrating air intake port and an air exhaust port, and the slide vane groove is arranged between the air intake port and the air exhaust port.

[0022] In a second aspect, the present application provides a rotary compressor.

[0023] The rotary compressor provided according to the embodiment of the present application includes the above-mentioned pump body assembly provided in the embodiment of the present application.

[0024] In a third aspect, an embodiment of the present application provides a refrigeration device.

[0025] The refrigeration equipment provided according to the embodiment of the present application includes the above-mentioned rotary compressor provided in the embodiment of the present application.

[0026] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the width of the tail of the sliding vane is increased, and the flange slide grooves of the upper and lower flanges are matched to leave space for the design of multiple elastic parts. The multiple elastic parts can increase the elastic force, thereby increasing the contact force between the sliding vane and the rolling rotor, preventing the sliding vane from detaching from the rolling rotor, and avoiding the noise of rattling. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A schematic structural diagram of a pump assembly of a rotary compressor provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 A partial enlarged view of

[0031] Figure 3 A schematic diagram of the structure of a slide provided in an embodiment of the present application; and

[0032] Figure 4 A schematic structural diagram of a pump body assembly of another rotary compressor provided in an embodiment of the present application.

[0033] In the figure,

[0034] 1. Cylinder; 101. Slide groove; 102. Spring hole; 103. Slot bottom hole; 2. Upper flange; 201. Flange slide groove; 202. Spring hole; 203. Slot bottom hole; 3. Lower flange; 301. Flange slide groove; 302. Spring hole; 303. Slot bottom hole; 4. Slide; 401. Wing; 402. Spring tail groove; 5. Spring; 6. Rolling rotor; 7. Crankshaft. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the present application, the directions or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "back", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figure 1-4 The present application is described in detail with reference to embodiments.

[0041] like Figure 1 As shown, a schematic diagram of the structure of a pump assembly of a rotary compressor is provided. The pump assembly in this embodiment refers in particular to a pump structure for a rotary compressor, and the purpose is to solve the problem of the sliding vane and the rolling rotor being separated and colliding periodically during the operation of the traditional rotary compressor, resulting in a rattling sound.

[0042] like Figure 1and Figure 2 As shown, the pump body assembly of the rotary compressor provided in the embodiment of the present application includes a cylinder 1, an upper flange 2, a lower flange 3 and a vane 4, wherein the cylinder 1 has a hollow cavity and a vane groove 101 communicating with the hollow cavity is provided on the cylinder 1; the upper flange 2 is sealed on the upper side of the cylinder 1, and the lower flange 3 is sealed on the lower side of the cylinder 1, and the upper flange 2 and the lower flange 3 close the hollow cavity in the cylinder 1 to form a working chamber; the vane 4 is movably arranged in the vane groove 101;

[0043] The upper flange 2 is provided with a flange slot 201, the lower flange 3 is provided with a flange slot 301, the slide 4 includes a slide body and a slide tail, the upper and lower sides of both sides of the slide tail protrude from the upper and lower sides of both sides of the slide body and extend into the flange slot 201 on the upper flange 2 and the flange slot 301 on the lower flange 3, respectively, and the flange slot 201 and the flange slot 301 are both provided with elastic members connected to the slide 4. The slide 4 always has a tendency to move toward the hollow cavity under the action of the elastic member.

[0044] In the above embodiment, the heights of the upper and lower sides of the tail of the vane are increased so that it protrudes from the vane body, and the flange groove 201 of the upper flange 2 and the flange groove 301 of the lower flange 3 are matched to leave space for the design of multiple elastic parts. Elastic parts can be arranged in the flange grooves on the upper and lower sides. Multiple elastic parts can increase the elastic force, thereby increasing the contact force between the vane 4 and the rolling rotor of the rotary compressor, preventing the vane from separating from the rolling rotor, and avoiding the noise of rattling. On the other hand, the above structural arrangement can eliminate the spring hole and the spring tail hole (i.e., the bottom hole of the groove) of the cylinder in the existing rotary compressor, allowing the vane and the vane groove to be lengthened, increasing the contact distance between the two, improving the tilting of the vane in the vane groove, reducing the friction force on the vane, reducing the power consumption of the compressor, improving the energy efficiency and reliability, and also improving the noise of rattling.

[0045] Specifically, Figure 2 and 3 As shown, the upper and lower sides of the tail of the slide 4 are respectively formed with winglets 401 protruding from the slide body, and the winglets 401 on both sides extend into the flange slide groove 201 and the flange slide groove 301 respectively, and the winglets 401 are connected with elastic parts, that is, the elastic parts are arranged between the upper flange and the winglets 401, or the elastic parts are arranged between the lower flange 3 and the winglets 401. Under the action of the elastic parts, the slide 4 always has a tendency to move toward the hollow cavity.

[0046] In some embodiments, the design space created by eliminating the spring hole and the groove bottom hole in the cylinder part after the above design can be fully utilized to extend the slide groove 101 from the outer wall surface to the hollow cavity along the radial direction of the cylinder 1, and lengthen the length of the slide 4 to maximize the contact distance between the two and reduce the tilting of the slide in the slide groove.

[0047] Preferably, Figure 1 and 2 As shown, the elastic member connected to the wing provided in the flange slot 201 and the flange slot 301 is a spring 5, the upper flange 2 is formed with a spring hole 202, the lower flange 3 is formed with a spring hole 302, the spring hole 202 extends from the outer wall surface of the upper flange 2 to the flange slot 201 in the radial direction, the spring hole 302 extends from the outer wall surface of the lower flange 3 to the flange slot 301 in the radial direction, the spring 5 is located in the spring hole 202 or the spring hole 302, and one end of the spring 5 abuts against the wing 401 of the slide 4. As a commonly used elastic member, the spring can change linearly according to the deformation amount and is easier to control. The spring hole 202 and the spring hole 302 are used to place the spring 5 and limit the direction of the elastic force.

[0048] More preferably, a spring tail slot 402 is formed on one side of the wing 401 away from the hollow cavity, one end of the spring 5 is connected to the spring tail slot 402 , and the other end thereof can be fixed in the spring hole 202 or the spring hole 302 .

[0049] The upper flange 2 is provided with a groove bottom hole 203 which is connected to both the flange groove 201 and the spring hole 202; the lower flange 3 is provided with a groove bottom hole 303 which is connected to both the flange groove 301 and the spring hole 302. The groove bottom holes 203 and 303 are provided to facilitate the processing of the flange groove 201 and the flange groove 301.

[0050] In some embodiments, multiple elastic parts are arranged in the flange groove 201 of the upper flange 2 and the flange groove 301 of the lower flange 3, which can further increase the contact force between the sliding vane 4 and the rolling rotor of the rotary compressor, prevent the sliding vane from detaching from the rolling rotor, and avoid the noise of rattling.

[0051] The flange slide groove and elastic member in the upper flange 2 are symmetrically arranged with the corresponding structure on the lower flange 3. The symmetrical arrangement of the upper and lower structures can realize that the elastic force on the sliding plate at the two wing positions is the same, and the sliding plate can slide smoothly in the sliding plate groove.

[0052] As another specific implementation, in addition to the elastic members on the upper flange 2 and the lower flange 3, one or more elastic members may be provided on the cylinder 1. When the compressor is running, the elastic members at the three positions work together to generate a greater spring force, which can better prevent the slide from separating from the roller. Specifically, an elastic member may be provided between the middle position of the tail of the slide 4 and the cylinder 1, and the slide 4 always has a tendency to move toward the hollow cavity under the action of the elastic member. Preferably, as Figure 4 As shown, the elastic member connected to the slide 4 and arranged in the slide slot 101 is a spring 5, and the cylinder 1 is formed with a spring hole 102, which extends from the outer wall surface of the cylinder 1 radially into the slide slot 101, and the spring 5 is located in the spring hole 102, and one end of the spring 5 abuts against the slide 4. As a commonly used elastic member, the spring can change linearly according to the deformation amount, which is easier to control. The spring hole 102 is used to place the spring 5 and limit the direction of the elastic force. More preferably, a spring tail groove 402 is also provided on the side of the slide 4 away from the hollow cavity, and one end of the spring 5 is connected to the spring tail groove 402, and the other end can be fixed in the spring hole 102. A groove bottom hole 103 is provided on the cylinder 1, which is connected to the slide slot 101 and the spring hole 102 at the same time, and the groove bottom hole 103 is provided to facilitate the processing of the slide slot 101 and the spring hole 102.

[0053] like Figure 1 and 3 As shown, the pump assembly of the rotary compressor also includes a rolling rotor 6 eccentrically mounted in the hollow cavity, whose outer cylindrical surface is tangent to the inner wall of the hollow cavity, and one end of the vane 4 is tightly matched with the rolling rotor 6. The vane 4 and the rolling rotor 6 separate the working chamber into two parts, namely the suction chamber and the exhaust chamber. Specifically, the cylinder 1 is formed with a radially penetrating suction port and exhaust port, and the vane groove 101 is provided between the suction port and the exhaust port.

[0054] As shown in the figure, the pump body assembly of the rotary compressor also includes a crankshaft 7 that passes through the upper flange 2, the rolling rotor 6 and the lower flange 3 in sequence. The rolling rotor 6 is sleeved on the eccentric part of the crankshaft 7. The crankshaft 7 is used to drive the rolling rotor to realize eccentric rotation.

[0055] An optional assembly step of the pump body assembly provided in the above embodiment includes: first, centering the upper flange; then installing the crankshaft, the rolling rotor and the vane, with the eccentric part located in the cylinder, the vane located in the vane groove, and the rolling rotor sleeved outside the eccentric part; finally, installing the lower flange to make the lower flange concentric.

[0056] It should be noted that other structures and operations of the pump body assembly of the present application are known to ordinary technicians in the field, and can refer to the pump body assembly structure of the rotary compressor in the prior art, and will not be described in detail here.

[0057] In addition, the present application also discloses a rotary compressor, including the pump body assembly provided in the above embodiment. Since the pump body assembly is the pump body assembly disclosed in the above embodiment, the rotary compressor having the pump body assembly also has all the above technical effects, which will not be described one by one here. The rotary compressor according to the above embodiment may also include other necessary components or structures such as a housing assembly, a motor assembly, an intake pipe, an exhaust valve, and the like, and the corresponding arrangement positions and connection relationships can all refer to the rotary compressor in the prior art. The connection relationship, operation and working principle of each unmentioned structure are known to ordinary technicians in the field and will not be described in detail here.

[0058] In addition, the present application also discloses a refrigeration device, including a rotary compressor. Since the rotary compressor is the rotary compressor disclosed in the above embodiment, the refrigeration device having the rotary compressor also has all the above technical effects, which will not be described one by one here.

[0059] The refrigeration device according to the above embodiment may be a refrigerator or an air conditioner, etc. Other structures and operations of the refrigeration device are known to those skilled in the art and will not be described in detail here.

[0060] Some embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referenced to each other.

[0061] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pump assembly for a rotary compressor, comprising: The cylinder (1) has a hollow cavity and is provided with a sliding plate groove (101) communicating with the hollow cavity; An upper flange (2) and a lower flange (3), respectively sealing covers on the upper and lower sides of the cylinder (1); A slide (4) movably arranged in the slide groove (101); The invention is characterized in that the upper flange (2) and the lower flange (3) are both provided with flange slide grooves (201; 301), the slide plate (4) comprises a slide plate body and a slide plate tail, the upper and lower sides of the slide plate tail both protrude from the upper and lower sides of the slide plate body and extend into the flange slide grooves (201; 301) respectively, and an elastic member connected to the slide plate (4) is arranged in the flange slide groove (201; 301); the slide plate (4) always has a tendency to move toward the hollow cavity under the action of the elastic member; Wings (401) protruding from the main body of the slide are formed on the upper and lower sides of the tail of the slide respectively, and the wings extend into the flange sliding grooves (201; 301) respectively, and the elastic member is arranged between the upper flange (2) or the lower flange (3) and the wings (401); The slide plate groove (101) extends from the outer wall surface to the hollow cavity along the radial direction of the cylinder (1), and no spring hole or groove bottom hole is provided on the cylinder.

2. The pump body assembly of the rotary compressor according to claim 1, characterized in that: The elastic member is a spring (5), and a spring hole (202; 302) is formed on the upper flange (2) or the lower flange (3), and the spring hole (202; 302) extends radially from the outer wall surface of the upper flange (2; 302) or the lower flange (3) into the flange sliding groove (201; 301), and the spring (5) is located in the spring hole (202; 302) and one end thereof abuts against the sliding plate (4).

3. The pump body assembly of the rotary compressor according to claim 2, characterized in that: A spring tail groove (402) is provided on a side of the wing (401) away from the hollow cavity, and one end of the spring (5) is connected to the spring tail groove (402).

4. The pump assembly of the rotary compressor according to claim 2, characterized in that: The upper flange (2) or the lower flange (3) is provided with a groove bottom hole (203; 303) which is in communication with both the flange sliding groove (201; 301) and the spring hole (202; 302).

5. The pump assembly of the rotary compressor according to claim 1, characterized in that: A plurality of elastic parts are arranged in the flange sliding grooves (201; 301) on the upper flange (2) and the lower flange (3).

6. The pump assembly of the rotary compressor according to claim 1, characterized in that: The flange sliding groove (201) and the elastic member in the upper flange (2) are symmetrically arranged with the corresponding structure on the lower flange (3).

7. The pump assembly of the rotary compressor according to claim 1, characterized in that: It also includes a rolling rotor (6) eccentrically mounted in the hollow cavity, whose outer cylindrical surface is tangent to the inner wall of the hollow cavity, and one end of the sliding plate (4) is tightly matched with the rolling rotor (6).

8. The pump assembly of the rotary compressor according to claim 7, characterized in that: It also includes a crankshaft (7) which passes through the upper flange (2), the rolling rotor (6) and the lower flange (3) in sequence, and the rolling rotor (6) is sleeved outside the eccentric part of the crankshaft (7).

9. The pump assembly of a rotary compressor according to claim 1, characterized in that: The cylinder (1) is formed with a radially penetrating air intake port and an air exhaust port, and the slide vane groove (101) is arranged between the air intake port and the air exhaust port.

10. A rotary compressor, characterized in that: The invention comprises a pump body assembly as described in any one of claims 1 to 9.

11. A refrigeration device, characterized in that: Includes the rotary compressor described in claim 10.

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