CN216381781U

CN216381781U - Suction valve plate, valve group assembly, compressor and refrigerator

Info

Publication number: CN216381781U
Application number: CN202121590071.3U
Authority: CN
Inventors: 胡余生; 魏会军; 刘卉; 严耀宗; 徐敏; 熊克强
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-04-26
Anticipated expiration: 2031-07-13

Abstract

The utility model provides an air suction valve plate, a valve group assembly, a compressor and a refrigerator. The air suction valve block comprises a valve block body, an air suction valve is arranged on the valve block body, the air suction valve comprises a first air suction valve, a second air suction valve and a third air suction valve, the first air suction valve, the second air suction valve and the third air suction valve are all connected with the valve block body through tail sections, and the tail sections of the second air suction valve and the third air suction valve are all in interval structures with the tail sections of the first air suction valve. According to the utility model, the three air suction valves are independently arranged, and the tail sections of the three air suction valves are independently distributed, so that the stress distribution is improved, the reliability of the valve plate is increased, the equivalent mass of a single valve plate is reduced, and the vibration noise is improved.

Description

Suction valve plate, valve group assembly, compressor and refrigerator

Technical Field

The utility model relates to the technical field of compressors, in particular to an air suction valve plate, a valve bank assembly, a compressor and a refrigerator.

Background

The valve group assembly is used as an important assembly of the compressor, and the structure of the valve group assembly can have great influence on the performance and the reliability of the compressor. The existing piston compressor mostly adopts a single-hole valve group, the equivalent mass of a single-hole valve plate is large, the response speed is low, the refrigerating capacity is low, the noise is large, and the efficient operation in a wide frequency band is difficult to realize. The broadband three-hole suction valve group component is applied to a broadband compressor and can operate in a wider frequency range of 16-150 Hz, different cold quantity matching is achieved, large-displacement refrigeration capacity is achieved through a small-displacement compressor, accordingly, the power density of the compressor is improved, meanwhile, the refrigeration capacity at a low evaporation temperature (such as minus 35 ℃ to minus 50 ℃) is improved, and the deep freezing function of a refrigerator is achieved.

However, the existing three-hole valve group has some defects: the clearance volume of the hollow part of the air suction valve plate is larger; the root parts of the three air suction valves share a valve gap, so that stress concentration is easy to cause, and the broadband reliable operation is difficult to ensure; the three exhaust ports are arranged, so that the clearance volume is increased, the exhaust structure is complex, and the manufacturing cost is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an air suction valve plate, a valve set assembly, a compressor and a refrigerator, which are at least used for solving the technical problem in the prior art that stress concentration is easily caused by sharing a valve gap at the root of an air suction valve, and specifically:

in a first aspect, the utility model provides an air suction valve plate, which comprises a valve plate body, wherein an air suction valve is arranged on the valve plate body, the air suction valve comprises a first air suction valve, a second air suction valve and a third air suction valve, the first air suction valve, the second air suction valve and the third air suction valve are all connected with the valve plate body through tail sections,

and a spacing structure is formed between the tail sections of the second air suction valve and the third air suction valve and the tail section of the first air suction valve.

Further optionally, the profiles of the first, second and third inhalation valves do not intersect.

Further optionally, gaps are formed between the edges of the first air suction valve, the second air suction valve and the third air suction valve and the valve plate body,

the spacing structure and the valve plate body are integrally formed and are separated from the suction valve through the gap.

Further optionally, the second inhalation valve and the third inhalation valve are symmetrically arranged at two sides of the first inhalation valve,

the second inhalation valve and the third inhalation valve are obliquely arranged relative to the first inhalation valve.

Further optionally, the first inhalation valve, the second inhalation valve and the third inhalation valve each comprise: the head section has a circular arc-shaped head end face, and the tail section has an outer expanding structure extending from the neck section to two sides.

Further optionally, the first, second and third inhalation valves have different stiffness and/or fixed frequency.

In a second aspect, the present invention provides a valve block assembly comprising:

the valve plate comprises a suction hole and a discharge hole, and the suction hole is arranged on the valve plate;

the suction valves are the same in number and correspond to the suction valves one by one and are used for controlling the opening degree of the suction holes; the exhaust valve plate is arranged on the valve plate, corresponds to the exhaust hole and is used for controlling the opening of the exhaust hole;

and the lift limiter is used for pressing the fixed end of the exhaust valve plate on the valve plate and limiting the opening height of the exhaust valve plate.

Further optionally, the inner wall of the air suction hole forms a diversion slope.

Further optionally, a portion of the inner wall of the suction hole is disposed obliquely to the axis of the suction hole to form the diversion slope.

Further optionally, the suction valve plate is disposed on the first face of the valve plate,

and a suction hole valve line is formed on the first surface of the valve plate in the circumferential direction around the suction hole and is used for being in sealing contact with the suction valve.

Further optionally, the periphery of the suction hole valve line is provided with a suction avoiding groove, and the suction avoiding groove is an annular equal-width groove formed around the circumference of the suction hole valve line.

Further optionally, the discharge valve sheet is disposed on the second face of the valve plate,

and an exhaust hole valve line is formed on the second surface of the valve plate around the circumferential direction of the air suction hole and is used for being in sealing contact with the exhaust valve plate.

Further optionally, the periphery of the exhaust hole valve line is provided with an exhaust limiting groove for mounting an exhaust valve plate.

In a third aspect, the present invention provides a compressor, including the above valve group assembly.

In a fourth aspect, the present invention provides a refrigerator, including the above valve bank assembly or compressor.

According to the utility model, the three air suction valves are independently arranged, and the tail sections of the three air suction valves are independently distributed, so that the stress distribution is improved, the reliability of the valve plate is increased, the equivalent mass of a single valve plate is reduced, and the vibration noise is improved.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic structural diagram of an intake valve sheet according to an embodiment of the utility model;

FIG. 2 is a schematic view of a partial structure of an intake valve plate according to an embodiment of the utility model;

FIG. 3 is a schematic view of a first face of a valve plate according to an embodiment of the present invention;

FIG. 4 is a schematic view of a second face construction of a valve plate according to an embodiment of the present invention;

FIG. 5 is a schematic partial sectional view showing an assembled state of a valve plate and a suction valve plate according to an embodiment of the present invention;

FIG. 6 is a schematic sectional view showing an assembled state of a valve plate, an exhaust valve plate and a lift stopper according to an embodiment of the present invention;

FIG. 7 is an exploded view of a compressor according to an embodiment of the present invention;

FIG. 8 shows experimental data comparison between the suction valve plate of the present invention and a conventional valve plate.

In the figure:

1. an air suction valve plate; 10. a valve plate body; 101. a spacer structure; 11. a first air intake valve; 111. A head section; 112. a necking section; 113. a tail section; 12. a second suction valve; 13. a third suction valve; 14. a valve plate exhaust port; 15. a valve plate air vent;

2. a valve plate; 21. a suction hole; 211. a diversion bevel; 22. a suction port valve line; 23. a suction avoidance groove; 24. an exhaust hole; 241. a vent line; 242. an exhaust limiting groove; 25. a valve plate vent;

3. an exhaust valve plate; 4. a lift limiter; 5. a cylinder head gasket; 6. a suction valve gasket; 7. a clamp spring; 8. and a cylinder head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The three-hole valve set can be applied to a broadband compressor to realize different cold quantity matching, so that a small-displacement compressor realizes large-displacement refrigeration capacity, the power density of the compressor is improved, the refrigeration capacity at low evaporation temperature (such as minus 35 ℃ to minus 50 ℃) is improved, and the deep freezing function of a refrigerator is realized. The three-hole valve group can improve the response speed of a single valve plate, gives consideration to low-frequency performance and high-frequency cooling capacity, meets different displacement requirements, and has better air suction efficiency within a wider frequency range of 16 Hz-150 Hz. The second air suction valve and the third air suction valve are obliquely and symmetrically arranged, so that the tail sections of the three air suction valves are mutually independently distributed, further, the stress distribution is improved, the reliability of the valve plates is increased, the equivalent mass of a single valve plate is reduced, and the vibration noise is improved. The utility model is described in detail below with reference to specific examples:

as shown in fig. 1 and 2, the utility model provides an air suction valve plate 1, which comprises a valve plate body 10, wherein an air suction valve is arranged on the valve plate body 10, the air suction valve comprises a first air suction valve 11, a second air suction valve 12 and a third air suction valve 13, the first air suction valve 11, the second air suction valve 12 and the third air suction valve 13 are all connected with the valve plate body 10 through a tail section 113, and a spacing structure 101 is formed between the tail section 113 of the second air suction valve 12 and the tail section 113 of the third air suction valve 13 and the tail section 113 of the first air suction valve 11, so that the first air suction valve 11, the second air suction valve 12 and the third air suction valve 13 form mutually independent structures, that is, the molded lines of the first air suction valve 11, the second air suction valve 12 and the third air suction valve 13 are not intersected and mutually independent. Preferably, the rigidity and the fixed frequency of the first air suction valve 11, the second air suction valve 12 and the third air suction valve 13 are different, low-frequency performance and high-frequency cooling capacity are considered, different displacement requirements are met, and the air suction efficiency is better within a wider frequency range of 16-150 Hz. The compressor can have the capacity of high-performance operation in a frequency range from low frequency to ultrahigh frequency without changing the structural size of the compressor body. Preferably, the thickness of the suction valve plate 1 can be set to 0.076 mm-0.203 mm, preferably 0.102 mm.

Preferably, the suction valve plate 1 is integrally formed by a flexible material, i.e. the plate body 10 is integrally formed with the suction valve and the spacing structure 101. Gaps are formed between each suction valve and the valve plate body 10 and between two adjacent suction valves, so that each suction valve can move independently and does not interfere with each other.

The plurality of suction valves have the same structure, as shown in fig. 2, each suction valve comprises a tail section 113, a neck section 112 and a head section 111, the tail section 113 is connected with the valve plate body 10, taking the first suction valve 11 as an example, as shown in fig. 2, a section a is the tail section 113, a section b is the neck section 112, and a section c is the head section 111, the neck section 112 is arranged between the tail section 113 and the head section 111 and is simultaneously connected with the tail section and the head section 111, the head section 111 is in a circular structure and forms an arc-shaped head end surface, the neck section 112 gradually decreases in width from two ends to the middle to form a waist-shaped structure, wherein the width of the neck section 112 decreases from two ends to the middle, the width of the neck section 112 decreases to effectively reduce the difficulty in opening the valve plate, improve the suction amount when the suction valve opens, avoid stress concentration on the tail section 113, avoid breakage of the valve plate, improve the stress distribution of the suction valve plate, improve the reliability of the valve plate, the tail section 113 has an outward expanding structure extending from the neck section 112 to two sides, the length of the side of the valve plate body 10 is increased, and the reliability of connection is improved.

As shown in FIG. 2, A₁A₂The arc line forms the profile of the first air intake valve 11, B₁B₂The arc of segment constitutes the profile, C, of the second suction valve 12₁C₂The section arcs form the molded lines of the third air suction valve 13, and the molded lines of the first air suction valve 11, the second air suction valve 12 and the third air suction valve 13 are not intersected, so that the tail sections of the three air suction valves are mutually spaced, and stress concentration is avoided.

In this embodiment, the first suction valve 11 is located on the center line of the valve sheet body 10, the second suction valve 12 and the third suction valve 13 are disposed on both sides of the first suction valve 11, and the second suction valve 12 and the third suction valve 13 are disposed to be inclined with respect to the first suction valve 11. Specifically, the head sections 111 of the second suction valve 12 and the third suction valve 13 are close to the necking section 112 of the first suction valve 11, and the tail sections 113 of the second suction valve 12 and the third suction valve 13 extend towards positions far away from the first suction valve 11, so that the tail sections 113 of different suction valves are far away, that is, the axis of the second suction valve 12 and the axis of the third suction valve 13 are symmetrically distributed about the axis of the first suction valve 11 and the axes of the three suction valves are intersected, stress distribution is improved, reliability of valve plates is increased, equivalent mass of a single valve plate is reduced, and vibration noise is improved.

Preferably, the spacing structure 101 between the second suction valve 12 and the first suction valve 11 is formed between the necking section 112 of the second suction valve 12 and the tail section 113 of the first suction valve 11; the spacing structure 101 between the third suction valve 13 and the first suction valve 11 is formed between the necking section 112 of the third suction valve 13 and the tail section 113 of the first suction valve 11, that is, the spacing structure 101 is formed at both sides of the tail section 113 of the first suction valve 11 and is spaced from the suction valves. The arrangement of the spacing structure 101 makes the tail sections 113 of two adjacent suction valves independent from each other, further avoiding stress concentration formed by the tail sections 113 of different suction valves.

The valve plate body 10 is further provided with a valve plate vent 14 and a valve plate vent 15 for fitting with other components (described in detail below).

Preferably, in other embodiments, four suction valves may be further provided, and four suction valves may be symmetrically provided about the center line of the valve sheet body 10, wherein the four suction valves may be symmetrically arranged in two rows and two columns, and the tail sections 113 are obliquely symmetrical; the air suction valve can also be transversely arranged, the left air suction valve and the right air suction valve are obliquely arranged, and the middle air suction valve is vertically arranged. It is easily conceivable that in different embodiments, a different number of suction valves can also be provided according to requirements.

The present invention also provides a valve block assembly, as shown in fig. 3 and 4, including:

the valve plate 2, the valve plate 2 includes the suction hole 21 and the exhaust hole 24, the suction hole 21 sets up a plurality, in this embodiment sets up three suction holes 21;

the suction valve of the suction valve plate 1 is in one-to-one correspondence with the plurality of suction holes 21 and is used for controlling the opening degree of the suction holes 21, and the valve plate exhaust port 14 on the suction valve plate 1 is in correspondence with the exhaust hole 24;

the exhaust valve plate 3 is arranged on the valve plate 2, corresponds to the exhaust hole 24 and is used for controlling the opening of the exhaust hole 24;

and the lift limiter 4 is used for pressing the fixed end of the exhaust valve plate 3 on the valve plate 2 and limiting the opening height of the exhaust valve plate 3.

In this embodiment, three suction holes 21 are provided, and form a one-to-one correspondence with the suction valves on the suction valve sheet 1, and each suction valve controls the opening of one suction hole 21. The three suction holes 21 may be different in shape, size, etc., and may be, for example, circular holes, oval-shaped trimmed circular holes, etc., and correspondingly, the three suction valves may be different in angle, shape, etc.

Preferably, the inner wall of the air suction hole 21 forms a guide slope 211 for guiding air suction, reducing flow loss and improving air suction efficiency. In this embodiment, a portion of the inner wall of the air suction hole 21 is obliquely arranged with respect to the axis of the air suction hole 21 to form the guide slope 211, for example, a circular arc slope, and preferably, the air suction hole 21 is divided into two parts along a diameter of the air suction hole 21, one part is a cylindrical cavity, and the other part is obliquely arranged to one side to form the guide slope 211.

As shown in fig. 5, the suction valve sheet 1 is disposed on a first surface of the valve plate 2, and a suction hole valve line 22 is formed on the first surface of the valve plate 2 around a circumference of the suction hole 21, the suction hole valve line 22 being for making a sealing contact with the suction valve for securing a sufficient sealing distance of the suction valve.

The periphery of the air suction hole valve line 22 is provided with an air suction avoiding groove 23, the air suction avoiding groove 23 is an annular equal-width groove formed around the circumference of the air suction hole valve line 22, the contact area between the air suction valve and the air suction hole valve line 22 is reduced, and the opening and closing of the air suction valve are facilitated. When the suction valve is closed, the head section 111 falls on the valve line of the suction port to ensure that the suction hole 21 is completely covered and no gas leaks; when the suction valve is opened by the pressure difference, the head section 111 is separated from the suction valve line, and the air flow enters the suction hole 21 from the distance between the head section 111 and the suction valve line.

The discharge valve sheet 3 is disposed on the second surface of the valve plate 2, and a discharge hole valve line 241 is formed on the second surface of the valve plate 2 around the circumference of the suction hole 21, the discharge hole valve line 241 being for making a sealing contact with the discharge valve sheet 3. The periphery of the exhaust hole valve line 241 is provided with an exhaust limiting groove 242 for installing the exhaust valve plate 3. The exhaust valve plate 3 covers and attaches the exhaust valve line to ensure sealing, and the periphery of the exhaust valve line 241 is provided with an exhaust limiting groove 242 which is convenient for opening and closing the exhaust valve.

Preferably, the valve plate 2 is further provided with a valve plate vent hole 25, and correspondingly, the suction valve plate 1 is provided with a valve plate vent hole 15 for communicating with the valve plate vent hole 25.

Exhaust valve piece 3 includes stiff end and discharge valve head end, and lift stopper 4 compresses tightly the stiff end of exhaust valve piece 3 in the exhaust spacing groove 242 on valve plate 2, and there is the certain distance in the arch of 4 middle sections of lift stopper and discharge valve head end, and the height is opened to restriction exhaust valve piece 3, prevents that the impact force is too big to lead to the fracture of exhaust valve piece 3. As shown in fig. 6, when the exhaust valve plate 3 is closed, the exhaust valve plate covers the exhaust hole valve line 241 of the valve plate 2 to ensure that the gas at the position of the exhaust hole 24 does not leak, when the exhaust valve plate 3 is opened, the fixed end is fixed in the exhaust limiting groove 242, and the protruding section of the lift limiter 4 limits the swing of the head end of the exhaust valve within a certain distance.

The utility model also provides a compressor, which comprises the valve group assembly, as shown in fig. 6 and 7, the compressor also comprises an air suction valve gasket 6, an exhaust valve plate 3, a cylinder cover gasket 5, a clamp spring 7 and a cylinder cover 8, the components are assembled in sequence in fig. 7, the valve group assembly is arranged on the end surface of the cylinder hole of the compressor, the air suction valve gasket 6 is close to one side of the end surface of the cylinder, and the cylinder cover 8 is close to the outer side of the cylinder and is connected by a fastener.

The valve plate vent hole 15, the valve plate vent hole 25 and the cylinder head gasket 5 vent hole are communicated with the exhaust cavity of the cylinder head 8, so that exhaust gas flows into the cylinder seat silencing cavity. An air suction port and an air exhaust port of the cylinder cover gasket 5 correspond to an air suction hole 21 and an air exhaust hole 24 of the valve plate 2 respectively, the clamp spring 7 is installed at the limiting position of the air suction port of the cylinder cover, the cylinder cover 8 is attached to the cylinder cover gasket 5, and all pore channels are communicated in the assembling process and connected through fasteners to ensure that the assembling is tightly attached.

The utility model also provides a refrigerator which comprises the valve bank assembly or the compressor.

The utility model uses the design of the three-hole valve group, the diameter of a single air suction port is reduced, the stress of the air suction valve is smaller, the service life is prolonged, and the pneumatic noise of the operation of the compressor is reduced. Meanwhile, the area of a cylinder hole can be utilized to the maximum extent through the three air suction holes, the effective flow area is guaranteed, and the performance requirement of the compressor is met. The mass of the suction valve part is reduced because of the head section, so that the suction valve has larger fixed frequency and proper rigidity, the response speed is improved, the backflow phenomenon caused by delay of the opening and closing time of the valve plate in the running process of the compressor is improved, the flow resistance loss is reduced, and the suction capacity and the volumetric efficiency of the compressor are improved.

As shown in figure 8, the volumetric efficiency of the three-hole valve set and the conventional single-hole valve set is verified through experimental comparison, and the three-hole valve set at the middle frequency band and the high frequency band has high response speed and high air suction efficiency due to the air suction valve plate 1, so that the cold quantity is improved, and the volumetric efficiency is higher than that of the conventional single-hole valve set. The three-hole valve group can meet different performance and cooling capacity requirements of the compressor in a wider operating frequency range (16-150 Hz), can ensure the low-frequency performance of the compressor when applied to the refrigerator compressor, can enable the compressor with certain displacement to achieve larger displacement cooling capacity when operating at high frequency, and improves the power density of the compressor; meanwhile, the refrigerating capacity of the compressor at low evaporation temperature (such as minus 35 ℃ to minus 50 ℃) is improved, and the deep freezing function of the refrigerator is realized.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An air suction valve plate is characterized by comprising a valve plate body, an air suction valve is arranged on the valve plate body and comprises a first air suction valve, a second air suction valve and a third air suction valve, the first air suction valve, the second air suction valve and the third air suction valve are all connected with the valve plate body through tail sections,

2. The suction valve plate of claim 1, wherein the profiles of the first, second and third suction valves do not intersect.

3. The suction valve sheet according to claim 1, wherein a gap is formed between each of edges of the first suction valve, the second suction valve, and the third suction valve and the sheet body,

4. The suction valve plate of claim 3, wherein the second suction valve and the third suction valve are symmetrically disposed at both sides of the first suction valve,

5. The suction valve plate of claim 4, wherein the first suction valve, the second suction valve, and the third suction valve each comprise: the head section has a circular arc-shaped head end face, and the tail section has an outer expanding structure extending from the neck section to two sides.

6. The suction valve plate of any one of claims 1 to 5, wherein the first suction valve, the second suction valve and the third suction valve have different stiffness and/or fixed frequency.

7. A valve manifold assembly, comprising:

the suction valve sheet of any one of claims 1 to 6, the suction valves having the same number as the suction valves and in one-to-one correspondence for controlling the opening degree of the suction holes; the exhaust valve plate is arranged on the valve plate, corresponds to the exhaust hole and is used for controlling the opening of the exhaust hole;

8. The valve manifold assembly of claim 7, wherein an inner wall of the suction port forms a flow directing chamfer.

9. The valve manifold assembly of claim 8, wherein a portion of the inner wall of the suction port is angled relative to an axis of the suction port to form the diversion ramp.

10. The valve block assembly of claim 7, wherein the suction valve plate is disposed on a first face of the valve plate,

11. The valve block assembly according to claim 10, wherein the suction hole valve line is provided at an outer circumference thereof with a suction avoidance groove which is an annular equal-width groove formed around a circumference of the suction hole valve line.

12. The valve block assembly of claim 7, wherein the exhaust valve plate is disposed on the second face of the valve plate,

13. The valve manifold assembly of claim 12, wherein the vent valve line has a vent limiting groove disposed about a periphery thereof for receiving a vent flap.

14. A compressor comprising a valve block assembly according to any one of claims 7 to 13.

15. A refrigerator comprising the valve block assembly of any one of claims 7 to 13 or the compressor of claim 14.