CN117967552A - Cylinder head assembly, compressor and refrigeration equipment - Google Patents

Abstract

The invention discloses a cylinder head assembly, a compressor and refrigeration equipment, which comprises a cylinder seat, a cylinder head component and a valve plate component, wherein the cylinder seat is provided with a cylinder hole, a boss is formed at the end part of the cylinder hole, the boss is provided with a circular outer peripheral surface, the cylinder head component comprises a cylinder head body, the cylinder head body is provided with a concave cavity, the concave cavity is provided with a circular inner peripheral surface, the valve plate component comprises a valve plate, an air suction valve plate and an air discharge valve plate, the valve plate component is assembled in the circular inner peripheral surface of the concave cavity, the cylinder head body is assembled at the end part of the cylinder hole of the cylinder seat, the circular inner peripheral surface of the concave cavity is matched with the circular outer peripheral surface of the boss and limits the valve plate component to the boss, the cylinder head body is provided with an air discharge cavity at the back side of the valve plate component, the cylinder head body is provided with an installation positioning surface propping against the back side of the valve plate component at the outer periphery of the air discharge cavity, and a sealing ring is arranged between the installation positioning surface and the valve plate component. The invention has simple structure, accurate positioning, reliable sealing, no cylinder head gasket, high performance of the compressor and low cost.

Description

Cylinder head assembly, compressor and refrigeration equipment

Technical Field

The invention relates to the field of compressors, in particular to a cylinder head assembly, a compressor and refrigeration equipment.

Background

A household refrigerator compressor generally comprises a movement and a housing, the movement being composed of a motor part and a pump body. The pump body is equipped with the cylinder head part, and the cylinder head part is square usually, and the part mainly includes: the novel air cylinder comprises four cylinder heads, a cylinder head gasket, an air suction silencer, a valve plate component, an air suction valve plate, a valve plate gasket, cylinder head screws, an air discharge silencer and the like, wherein the number of the cylinder head screws is four, the cylinder heads are made of aluminum alloy materials, and the air discharge silencer is made of iron materials. The cylinder cover, the cylinder cover gasket, the valve plate component, the air suction valve plate and the valve plate gasket are square in appearance, and cylinder cover screw mounting holes are formed in four corner positions. Correspondingly, screw holes are arranged on the surface of the cylinder seat (near the top end of the cylinder hole), and four cylinder head screws are matched with the screw holes to fasten the cylinder head component. The whole cylinder head is large in size and weight, the gravity center of the compressor is seriously biased, and the compressor vibrates greatly; the weight of the consumed material is also high, resulting in high cost of the compressor. The cylinder head is made of aluminum alloy and is easy to deform, so that the cylinder head needs to be particularly large in thickness to ensure enough strength, and the cost of the cylinder head is high. Because the cylinder head thickness is big, and cylinder head part is more and all have certain thickness, leads to the clearance between core and the casing to be too little, consequently the casing size can not further reduce, or cylinder block face distance can not further lengthen.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art and provides a cylinder head assembly, a compressor and refrigeration equipment.

The technical scheme adopted for solving the technical problems is as follows:

In a first aspect, a cylinder head assembly includes a cylinder block, a cylinder head component and a valve plate component, the cylinder block is provided with a cylinder hole, the cylinder block forms a boss at an end of the cylinder hole, the boss has a circular outer circumferential surface, the cylinder head component includes a cylinder head body, the cylinder head body has a cavity, the cavity has a circular inner circumferential surface, the valve plate component includes a valve plate, an air suction valve plate and an air discharge valve plate, the valve plate component is assembled in the circular inner circumferential surface of the cavity, the cylinder head body is assembled at a cylinder hole end of the cylinder block, the circular inner circumferential surface of the cavity is matched with the circular outer circumferential surface of the boss, and the valve plate component is limited to the boss, the cylinder head body is provided with an air discharge cavity at a back side of the valve plate component, the cylinder head body is provided with an installation positioning surface which abuts against the back side of the valve plate component, and a sealing ring is arranged between the installation positioning surface and the valve plate component.

With reference to the first aspect, in certain implementation manners of the first aspect, the installation positioning surface is provided with a first sealing ring installation groove surrounding the exhaust cavity, a cross section of the first sealing ring installation groove is in an incomplete circle, a radius of the first sealing ring installation groove is r, a depth r < h < 2r of the first sealing ring installation groove, and a cross section of the sealing ring is in a circle and is arranged in the first sealing ring installation groove.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a second seal ring mounting groove corresponding to the first seal ring mounting groove is provided on a back side of the valve plate member, a groove bottom of the second seal ring mounting groove is arc-shaped, and an outer end of the second seal ring mounting groove is rectangular.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the valve plate member is circular, an outer peripheral surface of the valve plate member is matched with the circular inner peripheral surface, a side edge of the valve plate member is provided with a limiting end surface, and a recess cavity of the cylinder head body is provided with a positioning slot matched with the limiting end surface.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the cylinder head assembly further includes a valve plate gasket, where the valve plate gasket is in a ring shape, the valve plate gasket is disposed between the valve plate member and the boss, the positioning slot extends by a certain thickness from the mounting positioning surface to the outer side of the cavity, and the thickness of the positioning slot is smaller than that of the valve plate member.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the cylinder head assembly further includes an air suction muffler, the cylinder head component is provided with an air suction muffler mounting port outside the exhaust cavity, an air outlet end of the air suction muffler is assembled to the air suction muffler mounting port, an air outlet end of the air suction muffler is provided with a positioning wing, and the air suction muffler mounting port is provided with a positioning slot matched with the positioning wing.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the cylinder head assembly further includes an elastic clip, the elastic clip includes a compression ring, a compression arm is disposed on an inner side of the compression ring, the compression arm forms an elastic structure of a cantilever beam, an end portion of the compression arm is upturned, an arc compression surface is formed at a bottom of the compression arm, a position of the compression arm corresponds to a position of an air outlet end of the air suction muffler, the compression surface at the bottom of the compression arm is compressed on the air suction muffler with elastic force, a connecting arm is disposed on an outer side of the compression ring, the connecting arm is fixedly connected with the cylinder seat through a fastener, the compression ring forms a cone shape inclined from an outer edge to the cylinder head assembly, an inner ring opening of the inner edge of the compression ring is upturned, the bottom of the compression ring forms an arc compression surface, and the compression surface is compressed on the cylinder head body.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the cylinder head component includes an exhaust muffler integrally made of plastic with the cylinder head body, and the cylinder head body has an exhaust hole communicating the exhaust plenum and the exhaust muffler.

A second aspect, a compressor, comprising a cylinder head assembly according to any one of the implementations of the first aspect.

In a third aspect, a refrigeration device includes a compressor according to any implementation of the second aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, the cylinder head body and the cylinder seat are of circular design, the cylinder head body and the cylinder seat are matched through circular peripheral surfaces, the valve plate component is limited to the boss of the cylinder seat, material consumption is reduced, sealing is achieved between the cylinder head body and the valve plate component through the sealing ring, and the function of a cylinder head gasket of a traditional compressor is achieved. The invention has simple structure, accurate positioning, reliable sealing, no cylinder head gasket, high performance of the compressor and low cost.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded view of an embodiment of a cylinder head assembly of the present invention;

FIG. 2 is a schematic view of the cylinder block structure of one embodiment shown in FIG. 1;

FIG. 3 is a schematic view of the cylinder head assembly of one embodiment shown in FIG. 1;

FIG. 4 is a cross-sectional view of the internal structure of the cylinder head assembly of one embodiment shown in FIG. 1;

FIG. 5 is a schematic view of the seal ring structure of one embodiment shown in FIG. 1;

FIG. 6 is a schematic side view of the discharge valve plate of the valve plate member of one embodiment shown in FIG. 1;

FIG. 7 is a schematic side view of the suction valve plate of the valve plate member of one embodiment shown in FIG. 1;

FIG. 8 is a cross-sectional view of the valve plate member of one embodiment shown in FIG. 1;

FIG. 9 is a schematic view of the valve plate gasket construction of one embodiment shown in FIG. 1;

FIG. 10 is a schematic view of the assembled state of the embodiment shown in FIG. 1;

FIG. 11 is a schematic view of the spring clip structure of one embodiment shown in FIG. 1;

FIG. 12 is a cross-sectional view of the spring clip structure of one embodiment shown in FIG. 1;

fig. 13 is a sectional view of the assembled structure of one embodiment shown in fig. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.

In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1,2,3, and 13, an embodiment of the present invention provides a cylinder head assembly including a cylinder block 100, a cylinder head member 200, and a valve plate member 300, the cylinder block 100 being provided with a cylinder bore 101, the cylinder block 100 forming a boss 102 at an end of the cylinder bore 101, an end surface of the boss 102 forming a ring shape extending around the cylinder bore 101, an end surface of the boss 102 being for supporting engagement with the cylinder head member such as the valve plate member 300. The boss 102 has a circular outer peripheral surface, the cylinder head member 200 includes a cylinder head body 201, the cylinder head body 201 has a cavity having a circular inner peripheral surface 202, the valve plate member 300 includes a valve plate 301, an intake valve plate 302 and an exhaust valve plate 303, the valve plate member 300 is fitted in the circular inner peripheral surface 202 of the cavity, the cylinder head body 201 is fitted to an end portion of the cylinder bore 101 of the cylinder block 100, the circular inner peripheral surface 202 of the cavity is fitted to the circular outer peripheral surface of the boss 102 and defines the valve plate member 300 to the boss 102, the cylinder head body 201 is provided with an exhaust receiving chamber 203 on a back side of the valve plate member 300, the exhaust receiving chamber 203 forms an exhaust passage volume, the cylinder head body 201 is provided with a mounting positioning surface 204 against the back side of the valve plate member 300 on an outer periphery of the exhaust receiving chamber 203, and a seal ring 400 is provided between the mounting positioning surface 204 and the valve plate member 300.

Wherein, the exhaust valve block compressing block 210 is disposed in the inner space of the exhaust chamber 203 to compress the root of the exhaust valve block. And an exhaust valve plate lift limit column 211 is arranged for controlling the opening height of the exhaust valve plate.

In the technical scheme of the invention, the cylinder head body 201 and the cylinder seat 100 are in a circular design, the cylinder head body 201 and the cylinder seat 100 are matched by circular peripheral surfaces, and the valve plate member 300 is limited to the boss 102 of the cylinder seat 100, so that the material consumption is reduced, wherein the cylinder head body 201 and the valve plate member 300 are sealed by the sealing ring 400, and the function of a cylinder head gasket of a traditional compressor is realized. The invention has simple structure, accurate positioning, reliable sealing, no cylinder head gasket, high performance of the compressor and low cost.

In some embodiments, referring to fig. 6 and 7, the suction valve plate 302 and the discharge valve plate 303 are fixed on both sides of the valve plate 301 by laser welding.

Referring to fig. 5, the seal ring 400 is made of a high temperature resistant modified rubber material, and has good elasticity, high temperature resistance and chemical corrosion resistance. The gasket 400 performs the function of a conventional compressor cylinder head gasket, and thus the present invention eliminates the cylinder head gasket.

In some embodiments, referring to fig. 3-5, the mounting positioning surface 204 is provided with a first seal ring mounting groove 205 surrounding the exhaust cavity 203, the cross section of the first seal ring mounting groove 205 is in a broken circular shape, the radius of the first seal ring mounting groove 205 is r, the depth r < h < 2r of the first seal ring mounting groove 205 (i.e. between 1-2 times the radius), and the preferred depth is 1.1-1.3 times the radius, so as to have the effects of large inside and small mouth. Thus, the seal 400 can be inserted into the groove to form a component without automatic falling off, which is particularly advantageous for automated production operations. The seal ring 400 has a circular cross section and is disposed in the first seal ring mounting groove 205.

Further, referring to fig. 6 and 8, the back side of the valve plate member 300 is provided with a second seal ring mounting groove 304 corresponding to the first seal ring mounting groove 205, the groove bottom of the second seal ring mounting groove 304 is arc-shaped, and the outer end of the second seal ring mounting groove 304 is rectangular. The second seal ring mounting groove 304 cooperates with the seal ring 400 to perform a good sealing function while allowing the seal ring 400 to deform under the pre-tightening force and to fill in the rectangular space.

In the embodiment of the invention, the sealing ring 400 is matched with the grooves of the cylinder head body and the valve plate 301, so that a good sealing effect is achieved, a cylinder head gasket is eliminated, and the thickness dimension of the cylinder head is reduced.

In some embodiments, referring to fig. 3, 6 and 7, the valve plate member 300 is circular, the outer peripheral surface of the valve plate member 300 is matched with the circular inner peripheral surface 202, one side edge of the valve plate member 300 is provided with a limiting end surface 305, the limiting end surface 305 can be designed to be straight or shaped, and a positioning slot 206 matched with the limiting end surface 305 is arranged in a concave cavity of the cylinder head body 201. By the cooperation of the positioning shoe 206 and the circular peripheral surface, the positioning shoe 206 is positioned circumferentially, preventing rotational displacement, and the valve plate member 300 is accurately and stably fitted in the recess of the cylinder head body 201.

In some embodiments, referring to fig. 1 and 9, the cylinder head assembly further includes a valve plate gasket 500, where the valve plate gasket 500 is annular and is free of a brown, the valve plate gasket 500 is disposed between the valve plate member 300 and the boss 102, and the positioning brown 206 extends from the mounting positioning surface 204 to a thickness outside the concave cavity, and the thickness of the positioning brown 206 is smaller than the thickness of the valve plate member 300. After assembly, the valve plate 301 will go beyond the positioning brown 206, so that the valve plate gasket 500 is not in contact with the positioning brown 206 when the valve plate gasket 500 is subsequently reintroduced, and the valve plate gasket 500 is not affected by the positioning brown 206.

In some embodiments, referring to fig. 1, 3 and 10, the cylinder head assembly further includes an intake silencer 600, the cylinder head assembly 200 is provided with an intake silencer mounting opening 207 outside the exhaust plenum 203, an air outlet end of the intake silencer 600 is assembled to the intake silencer mounting opening 207, an air outlet end of the intake silencer 600 is provided with a positioning wing 601, the intake silencer mounting opening 207 is provided with a positioning groove 208 matched with the positioning wing 601, and the positioning wing 601 is mounted in the positioning groove 208 in the outer space of the cylinder head body.

Further, referring to fig. 1, 10, 11, 12 and 13, the cylinder head assembly further includes an elastic clip 700, the elastic clip 700 includes a compression ring 701, a compression arm 702 is disposed on the inner side of the compression ring 701, the compression arm 702 forms an elastic structure of a cantilever beam, an end of the compression arm 702 is upturned, an arc compression surface is formed at the bottom, the position of the compression arm 702 corresponds to the position of the air outlet end of the suction muffler 600, and the compression surface at the bottom of the compression arm 702 is compressed on the suction muffler 600 with elastic force, so that abrasion and abnormal noise caused by loosening of the suction muffler 600 are avoided.

The outside of the compression ring 701 is provided with a plurality of connecting arms 703, the connecting arms 703 are fixedly connected with the cylinder seat 100 through fasteners, the compression ring 701 forms a cone shape which is inclined from the outer edge to the inner edge towards the cylinder head component 200, the inner ring edge of the inner edge of the compression ring 701 is upwarp, the bottom forms an arc compression surface 704, and the arc compression surface 704 is compressed on the cylinder head body 201, so that the end surface of the cylinder head body 201 made of plastics is prevented from being damaged by the sharp edge due to too high pretightening force.

The domestic refrigerator compressor is mainly a reciprocating piston compressor. One of the characteristics of the reciprocating compressor is that the compression ratio is large, and thus the temperature of the refrigerant is high after the cylinder is compressed. The high temperature refrigerant flows out of the valve plate exhaust port, into the aluminum cylinder head internal volume, and then into the iron exhaust muffler. Therefore, strong temperature difference is formed between the inside and the outside of the aluminum cylinder cover and the iron exhaust silencer, aluminum and iron are good conductors for heat, so that heat of high-temperature refrigerant in the aluminum cylinder cover and the iron exhaust silencer is dissipated in the inner cavity of the compressor shell in a heat exchange mode of heat conduction, gas convection and the like, and the temperature of gas in the compressor shell is greatly increased, so that the suction temperature of the compressor is increased, harmful suction overheat is formed, the suction efficiency of the compressor is seriously affected, and the refrigerating capacity and the performance coefficient of the compressor are reduced.

In some embodiments, referring to fig. 1, 3, and 4, the cylinder head assembly 200 includes an exhaust muffler 209, the exhaust muffler 209 being integrally formed with the cylinder head body 201 by plastic, the cylinder head body 201 having an exhaust port 210 communicating between the exhaust plenum 203 and the exhaust muffler 209. In this embodiment, the cylinder head component 200 is integrally injection molded from plastic, and the material is preferably a nylon material reinforced by glass fibers, so that the cylinder head component has good heat insulation performance, avoids the transfer of high-temperature gas heat in an exhaust channel to the inside of the compressor shell, effectively reduces the air suction overheat of the compressor, and improves the refrigerating capacity and the coefficient of performance of the compressor.

The exhaust muffler 209 of the cylinder head assembly 200 is injection-molded integrally with the cylinder head body 201, and is connected to the internal exhaust pipe to form an exhaust passage. The connection between the exhaust muffler 209 and the inner exhaust pipe is preferably made by infrared laser welding, but may be made by other connection methods such as ultrasonic welding and epoxy bonding.

Embodiments of the present invention also provide a compressor including a cylinder head assembly in any of the above embodiments.

Embodiments of the present invention also provide a refrigeration apparatus including a compressor in any of the above embodiments.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present application is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.

Claims (10)

1. The cylinder head assembly is characterized by comprising a cylinder seat, a cylinder head component and a valve plate component, wherein the cylinder seat is provided with a cylinder hole, a boss is formed at the end part of the cylinder hole, the boss is provided with a circular outer peripheral surface, the cylinder head component comprises a cylinder head body, the cylinder head body is provided with a concave cavity, the concave cavity is provided with a circular inner peripheral surface, the valve plate component comprises a valve plate, an air suction valve plate and an air discharge valve plate, the valve plate component is assembled in the circular inner peripheral surface of the concave cavity, the cylinder head body is assembled at the end part of the cylinder hole of the cylinder seat, the circular inner peripheral surface of the concave cavity is matched with the circular outer peripheral surface of the boss, the valve plate component is limited to the boss, the cylinder head body is provided with an air discharge cavity at the back side of the valve plate component, the cylinder head body is provided with an installation positioning surface propping against the back side of the valve plate component, and a sealing ring is arranged between the installation positioning surface and the valve plate component.

2. The cylinder head assembly according to claim 1, wherein the mounting and positioning surface is provided with a first seal ring mounting groove surrounding the exhaust cavity, the cross section of the first seal ring mounting groove is in a broken circular shape, the radius of the first seal ring mounting groove is r, the depth r < h < 2r of the first seal ring mounting groove, and the cross section of the seal ring is in a circular shape and is arranged in the first seal ring mounting groove.

3. The cylinder head assembly according to claim 2, wherein a second seal ring mounting groove corresponding to the first seal ring mounting groove is formed on the back side of the valve plate member, the groove bottom of the second seal ring mounting groove is arc-shaped, and the outer end of the second seal ring mounting groove is rectangular.

4. The cylinder head assembly according to claim 1, wherein the valve plate member is circular, an outer peripheral surface of the valve plate member is matched with the circular inner peripheral surface, a limit end surface is arranged at one side edge of the valve plate member, and a positioning brown matched with the limit end surface is arranged in a concave cavity of the cylinder head body.

5. The cylinder head assembly of claim 4, further comprising a valve plate gasket, the valve plate gasket being annular, the valve plate gasket being disposed between the valve plate member and the boss, the locating shoe extending from the mounting locating face to an outer side of the cavity by a thickness, the locating shoe having a thickness less than a thickness of the valve plate member.

6. The cylinder head assembly of claim 1, further comprising an intake silencer, wherein the cylinder head assembly is provided with an intake silencer mounting port outside the exhaust plenum, wherein an outlet end of the intake silencer is mounted to the intake silencer mounting port, wherein an outlet end of the intake silencer is provided with a positioning wing, and wherein the intake silencer mounting port is provided with a positioning groove that mates with the positioning wing.

7. The cylinder head assembly according to claim 6, further comprising an elastic clamp, wherein the elastic clamp comprises a compression ring, a compression arm is arranged on the inner side of the compression ring, the compression arm forms an elastic structure of a cantilever beam, the end part of the compression arm is upturned, an arc compression surface is formed at the bottom, the position of the compression arm corresponds to the position of the air outlet end of the air suction silencer, the compression surface at the bottom of the compression arm is compressed on the air suction silencer through elastic force, a connecting arm is arranged on the outer side of the compression ring, the connecting arm is fixedly connected with a cylinder seat through a fastener, the compression ring forms a cone shape inclined from the outer edge to the inner edge of the compression ring to the cylinder head component, the inner ring opening of the inner edge of the compression ring is upturned, the bottom forms the arc compression surface, and the compression surface is compressed on the cylinder head body.

8. The cylinder head assembly of claim 1, wherein the cylinder head component includes an exhaust muffler integrally formed with the cylinder head body from plastic, the cylinder head body having an exhaust port communicating the exhaust plenum with the exhaust muffler.

9. A compressor comprising a cylinder head assembly according to any one of claims 1 to 8.

10. A refrigeration apparatus comprising the compressor of claim 9.