CN110761975A - Double-reed suction and exhaust valve assembly and compressor - Google Patents

Abstract

The invention relates to the technical field of compressors, in particular to a double-reed suction and discharge valve assembly. The double-reed suction and exhaust valve assembly has a suction valve sheet, a valve plate, and an exhaust valve sheet, and the valve plate is provided with two suction holes and two exhaust holes; the suction valve sheet is provided with Two suction reeds, the exhaust valve plate is provided with two exhaust reeds; the suction reeds and the exhaust reeds have a waist-shaped structure, and the two suction reeds are arranged adjacent to each other. On the suction valve plate body and the opening direction is opposite. The two suction holes, two exhaust holes, two suction reeds, and two exhaust reeds are specially and closely arranged, which saves the space of the valve plate to the greatest extent. In the case of limited valve plate area, this arrangement can maximize the area of the suction and exhaust holes, increase the gas mass flow, greatly improve the suction and exhaust efficiency of the compressor, and improve the overall compressor performance. efficiency.

Description

A double-reed suction and exhaust valve assembly and compressor

technical field

The invention belongs to the technical field of compressors, in particular to a double-reed suction and exhaust valve assembly and a compressor.

Background technique

The fully enclosed reciprocating piston refrigeration compressor realizes the suction and exhaust process through the suction and exhaust system, and the suction and exhaust valve assembly is the key component of the suction and exhaust system. The valve plate is provided with suction holes and exhaust holes. The plate is provided with a tongue covering the suction hole and the exhaust hole. The suction hole and the exhaust hole are opened and closed through the displacement of the tongue, and the refrigerant is intermittently sucked into and discharged from the cylinder to achieve the purpose of refrigeration.

At present, the valve group of most fully enclosed reciprocating piston refrigeration compressors has only one suction hole and one exhaust hole, or the cross-sectional area of the suction hole or the exhaust hole is too small, and the suction and discharge resistance is too large. When the displacement increases , the noise increases, and it will also affect the life of the valve plate, thereby affecting the performance of the compressor. Under the same conditions of the compressor, the more the number of suction and exhaust holes, the greater the mass flow, and the higher the efficiency of the compressor. A double-reed suction valve assembly disclosed in the reference document CN201621121818.X includes two suction holes, which improves the suction efficiency of the compressor to a certain extent, but due to the limitation of the valve plate space, only one discharge valve is provided. Air holes and exhaust resistance are still too large. This is because the cylinder bore is surrounded by a circular airflow duct, and all the suction and exhaust reeds need to be arranged within the circular cross-sectional area of the circular airflow duct. However, the valve plate area of general small compressors is relatively small, and it is difficult to arrange multiple suction holes and multiple exhaust holes in the above circular area, so that it is difficult to increase the number of suction and exhaust holes to improve the compressor performance. Suction and exhaust efficiency.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a double-reed suction-discharge valve assembly and a compressor with two suction holes and two discharge holes arranged in a limited valve plate space.

The invention provides a double-reed suction and exhaust valve assembly, which includes a suction valve plate, a valve plate and an exhaust valve plate stacked in sequence from top to bottom, characterized in that the valve plate is provided with two A suction hole and two exhaust holes; the suction valve piece includes a suction valve piece body and a suction reed arranged on the suction valve piece body, and the suction reed is covered with the suction valve piece. air holes, the number of the suction reeds is equal to the number of the suction holes; the exhaust valve plate includes an exhaust valve plate body and an exhaust reed set on the exhaust valve plate body, the exhaust valve plate The air reeds are covered with the exhaust holes, and the number of the exhaust reeds is equal to the number of the exhaust holes; the suction reeds have a waist-shaped structure, and the two suction reeds are arranged adjacent to the suction reeds. on the air valve plate body and the opening direction is opposite.

Further, both the suction valve piece body and the exhaust valve piece body are provided with through holes, the suction reed covers the through holes on the suction valve piece body, and the exhaust reed covers the through holes on the suction valve piece body. a through hole on the body of the exhaust valve plate.

Further, the suction reed and the exhaust reed both include a connection end and a movable end away from the connection end, the movable end and the hole wall of the through hole have a gap, and the connection end is connected to the The hole wall of the through hole is integrally formed with the valve plate body.

Further, a part of the suction tongue close to the movable end is covered with the suction hole; a part of the exhaust tongue close to the movable end is covered with the exhaust hole.

Further, the double-reed suction and exhaust valve assembly further includes a connecting piece, and the valve plate, the suction valve sheet and the exhaust valve sheet are respectively provided with a first installation hole, a second installation hole and a third installation hole. , the connecting piece fixes the suction valve sheet and the exhaust valve sheet on the valve plate through the first mounting hole, the second mounting hole and the third mounting hole.

Further, the center line of the exhaust reed is coincident with the circle center of the third installation hole near the connecting end of the exhaust reed.

Further, the connecting member is a screw.

Further, an exhaust buffer sheet disposed on the side of the exhaust valve sheet away from the valve plate is also included.

The present invention also provides a compressor comprising a double-reed suction and discharge valve assembly. The double-reed suction and exhaust valve assembly includes a suction valve sheet, a valve plate, and an exhaust valve sheet stacked in sequence from top to bottom. It is characterized in that the valve plate is provided with two suction holes and two and the suction valve piece includes a suction valve piece body and a suction reed arranged on the suction valve piece body, the suction tongue reed is covered with the suction hole, and the The number of the suction reeds is equal to the number of the suction holes; the exhaust valve piece includes an exhaust valve piece body and an exhaust tongue reed arranged on the exhaust valve piece body, and the exhaust tongue cover is closed. For the exhaust holes, the number of the exhaust reeds is equal to the number of the exhaust holes; the suction reeds have a waist-shaped structure, and the two suction reeds are arranged adjacent to the suction valve plate. On the body and the opening direction is opposite.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a double-reed suction and exhaust valve assembly and a compressor, and the compressor includes the double-reed suction and exhaust valve assembly. The valve plate of the double-reed suction and exhaust valve assembly is provided with two suction holes and two exhaust holes, the suction valve piece is set with two suction tongues, and the exhaust valve piece is set with two exhaust tongues , the suction reed is waist-shaped, and the two suction holes, two exhaust holes, two suction reeds, and two exhaust reeds are specially and closely arranged to maximize savings. disc space. In the case of limited valve plate area, this arrangement can maximize the area of the suction and exhaust holes, increase the gas mass flow, greatly improve the suction and exhaust efficiency of the compressor, and improve the overall compressor performance. efficiency.

Description of drawings

FIG. 1 is a structural diagram of a double-reed suction and exhaust valve assembly provided by the present invention.

FIG. 2 is an assembly diagram of a double-reed suction and exhaust valve assembly provided by the present invention.

FIG. 3 is a schematic structural diagram of a valve plate of a double-reed suction and exhaust valve assembly provided by the present invention.

Figure 4a is a schematic structural diagram of a suction valve piece of a double-reed suction and discharge valve assembly provided by the present invention.

Figure 4b is a schematic structural diagram of the body of the suction valve sheet of a double-reed suction and discharge valve assembly provided by the present invention.

Figure 5a is a schematic structural diagram of an exhaust valve sheet of a double-reed suction and exhaust valve assembly provided by the present invention.

Figure 5b is a schematic structural diagram of the body of the exhaust valve sheet of a double-reed suction and exhaust valve assembly provided by the present invention.

Figure 6a is a schematic structural diagram of an exhaust buffer sheet of a double-reed suction and exhaust valve assembly provided by the present invention.

Figure 6b is a schematic structural diagram of the body of the exhaust buffer sheet of a double-reed suction and exhaust valve assembly provided by the present invention.

Figure 6c is a schematic diagram of the assembly structure of the exhaust buffer sheet of a double-reed suction and exhaust valve assembly provided by the present invention.

In the figure: 1, valve plate; 2, suction valve plate; 3, exhaust valve plate; 11, suction hole; 12, exhaust hole; 13, first installation hole; 14, first ventilation hole; 111, First suction hole; 112, second suction hole; 121, first exhaust hole; 122, second exhaust hole; 21, suction valve body; 22, suction tongue; 211, first pass 213, the second installation hole; 214, the second vent hole; 221, the first connection end; 222, the first movable end; 2111, the first vent hole area; 2112, the second vent hole 31. Exhaust valve body; 32. Exhaust reed; 321, Second connection end; 322, Second movable end; 311, Second through hole; 312, Third through hole; 313, Third installation 314, the third ventilation hole; 41, the exhaust buffer body; 42, the baffle; 411, the fourth through hole; 412, the fifth through hole; 413, the fourth installation hole; 414, the fourth ventilation hole.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2 , an embodiment of the present invention provides a double-reed intake and exhaust valve assembly, the double-reed intake and exhaust valve assembly includes intake valve sheets 2 stacked in sequence from top to bottom , valve plate 1, and exhaust valve plate 3, characterized in that, the valve plate 1 is provided with two suction holes 11 and two exhaust holes 12; the suction valve plate 2 includes a suction valve plate body 21 and a suction reed 22 arranged on the suction valve body 21, the suction reed 22 covers the suction hole 11, and the number of the suction reeds 22 is the same as that of the suction The number of holes 11 is equal; the exhaust valve plate 3 includes an exhaust valve plate body 31 and an exhaust reed 32 arranged on the exhaust valve plate body, and the exhaust reed 32 covers the exhaust valve plate. For the air holes 12 , the number of the exhaust reeds 32 is equal to the number of the exhaust holes 12 .

The double-reed suction and exhaust valve assembly is installed on the cylinder hole of the compressor, and the suction valve plate 2 is close to the inside of the cylinder, and the exhaust valve plate 3 is close to the outside of the cylinder. When the compressor is working, the reciprocating motion of the piston causes the pressure difference inside and outside the cylinder. When the external air pressure of the cylinder is higher than the internal air pressure, the suction reed 22 is pressed open, the suction hole 11 is opened, and at the same time, the The exhaust reed 32 is in a closed state under the action of air pressure, and the exhaust hole 12 is closed; when the air pressure inside the cylinder is higher than the external air pressure, the exhaust reed 32 is pressed open, and the exhaust hole 12 is opened, At the same time, the suction tongue 22 is in a closed state under the action of air pressure, and the suction hole 11 is closed.

The number of the suction holes 11 and the number of the suction reeds 22 arranged on the suction valve plate body 21 , and the number of the exhaust holes 12 and the row of the exhaust valve plate body 31 . The number of gas reeds 32 can be variously selected. For example, there may be two or other numbers of two or more. In the following, the double-reed suction valve assembly of the present invention will be described by taking the number of the suction holes 11 and the discharge holes 12 as two, and the suction reeds 22 and the discharge reeds 32 as two as an example. Be explained.

The number of the suction reeds 22 is two, and the shape and size of the two suction reeds are the same; the number of the exhaust reeds 32 is two, and the shapes and sizes of the two exhaust reeds are the same. It is required that the suction reed 22 cannot cover the exhaust hole 12 , and the exhaust reed 32 cannot cover the suction hole 11 . The suction tongue 22 has a waist-shaped structure, and two suction tongues are adjacently arranged on the suction valve plate body 21 and have opposite opening directions. The shape and arrangement of the tongue can save the area occupied by the suction tongue 22 to the greatest extent, and can also ensure that the suction tongue 22 has a longer lever arm, reducing the opening resistance.

As shown in FIG. 3 , the valve plate 1 is provided with a first intake hole 111 , a second intake hole 112 , a first exhaust hole 121 , and a second exhaust hole 122 . Optionally, the first suction hole 111 , the first exhaust hole 121 , the second suction hole 112 , and the second exhaust hole 122 are circular holes and are arranged on the valve plate 1 in a clockwise order. in the middle.

As shown in FIG. 4a, the suction tongue 22 includes a first connection end 221 and a first movable end 222 away from the first connection end 221. Optionally, the first connection end 221 is connected to the Intake valve body 21 .

As shown in FIG. 4b , a first through hole 211 is defined in the suction valve body 21 . The first through hole 211 is integrally communicated with the suction hole 11 and the exhaust hole 12 on the valve plate 1 , and the first through hole 211 is arranged in the middle position of the suction valve plate body 21 . In this embodiment, the suction reed 22 is disposed in the first through hole 211, and a first exhaust hole 121 hole escape area 2111 and a second exhaust hole escape area 2112 are reserved. An exhaust hole escape area 2111 communicates with the first exhaust hole 121 , and the second exhaust hole escape area 2112 communicates with the second exhaust hole 122 .

Optionally, there is a gap between the first movable end 222 and the hole wall of the first through hole 23, so as to reduce the resistance received by the suction reed 22 when the valve block works. Considering the structural stability of the suction valve plate 2 , optionally, the first connection end 221 of the suction reed 22 is connected to the hole wall of the first through hole 211 of the suction valve plate body 21 . And it is integrally formed with the suction valve body 21 .

As shown in FIG. 5a, the exhaust reed 32 includes a second connection end 321 and a second movable end 322 away from the second connection end 321, and the second connection end 321 is connected to the exhaust valve plate body 31 .

As shown in FIG. 5 b , the exhaust valve plate body 31 is provided with a second through hole 311 and a third through hole 312 . The number of the second through holes 311 is the same as the number of the exhaust reeds 32 . In this embodiment, the number of the exhaust reeds 32 is two, that is, the number of the second through holes 311 is two. The two exhaust tongues 32 are respectively disposed in the two second through holes 311 . The number of the third through holes 312 is the same as that of the suction holes 11 on the valve plate 1 and is in one-to-one correspondence.

Optionally, there is a gap between the second movable end 322 and the hole wall of the second through hole 311, so as to reduce the resistance received by the exhaust reed 32 when the valve block works. Considering the structural stability of the exhaust valve plate 3, the second connecting end 321 of the exhaust reed 32 is connected to the hole wall of the second through hole 311 of the exhaust valve plate body 31 and is connected to the The exhaust valve body 31 is integrally formed.

In this embodiment, the valve plate 1 is a rectangular valve plate. The valve plate 1 is further provided with first installation holes 13 , the first installation holes 13 include four, and the four first installation holes 13 are respectively disposed at four corners of the rectangular valve plate 1 . The suction valve plate 2 is provided with a second installation hole 213, and the exhaust valve plate 3 is provided with a third installation hole 313. Both the second installation hole 213 and the third installation hole 313 are the same as the first installation hole. The number of installation 13 holes is the same and the positions are in one-to-one correspondence. The suction and exhaust valve assembly also includes the first installation hole 13, the second installation hole 213 and the third installation hole 313 to fix the suction valve plate 2 and the exhaust valve plate 3 to the valve. Connector for board 1. Optionally, the connecting member is a screw.

Optionally, the center line of the exhaust reed 32 coincides with the center of the third installation hole 313 near the second connection end 321 of the exhaust reed 32 . After the valve block assembly is installed, the connecting piece has a pressing effect on the root of the exhaust reed 32, which can prevent the root from tearing when the exhaust reed 32 is frequently opened.

Optionally, in order to further improve the reliability of the exhaust valve plate 3, as shown in FIG. 6a, the double-reed suction and exhaust valve assembly further includes a valve plate disposed on the exhaust valve plate 3 away from the valve plate. 1 side of the exhaust buffer sheet 4, the exhaust buffer sheet 4 includes an exhaust buffer sheet body 41 and a blocking piece 42 provided on the exhaust buffer sheet body 41. The blocking piece 42 is in an open state at a certain angle, and plays a role of buffering the opening of the exhaust reed, as shown in FIG. 6c . Optionally, the blocking piece 42 is integrally formed with the air buffer piece body 41 . As shown in FIG. 6b, the exhaust buffer sheet body 41 is provided with a fourth through hole 411 and a fifth through hole 412, and the fourth through hole 411 corresponds to the position of the exhaust tongue 32 one-to-one, so as to be able to The number of the fifth through holes 412 and the exhaust holes 12 of the valve plate 1 are the same in number and communicate with each other in a one-to-one correspondence. The exhaust buffer sheet body 41 is also provided with a fourth installation hole 413, the fourth installation hole and the first installation hole 13 have the same number and one-to-one correspondence, and are used for the valve plate 1, the suction The valve plate 2 and the exhaust valve plate 3 are connected.

Optionally, the suction valve sheet, the valve plate, the exhaust valve sheet and the exhaust buffer sheet are sequentially provided with a first ventilation hole 14, a second ventilation hole 214, a third ventilation hole 314, and a fourth ventilation hole 414, And the first ventilation holes 14 , the second ventilation holes 214 , the third ventilation holes 314 , and the fourth ventilation holes 414 are connected in one-to-one correspondence. The vent hole is used to discharge the gas discharged from the cylinder hole into the exhaust passage, and the number can be one or more. It needs to be set in the area between the circular section boundary of the cylinder hole and the outer boundary of the valve group.

Since the valve plate of the double-reed suction and exhaust valve assembly is provided with two suction holes and two exhaust holes, and the valve plate is provided with two suction tongues and two exhaust tongues. In the same valve plate space, the design of two suction reeds adjacent to each other with opposite opening directions makes the suction reeds closely arranged, which saves the valve plate space to the greatest extent, and also ensures a longer lever arm and Small opening resistance. In the case of limited valve plate area, such an arrangement can maximize the area of the suction and exhaust holes, improve the suction and exhaust efficiency, and thus improve the overall efficiency of the compressor.

The present invention further provides a compressor, which includes the double-reed suction valve assembly. The double-reed suction and exhaust valve assembly includes a suction valve plate 2, a valve plate 1, and an exhaust valve plate 3 stacked in sequence from top to bottom. It is characterized in that the valve plate 2 is provided with two suction valve plates. Air hole 11 and two exhaust holes 12; the suction valve piece 2 includes a suction valve piece body 21 and a suction reed 22 arranged on the suction valve piece body, and the suction reed 22 covers In conjunction with the suction holes 11, the number of the suction tongues 22 is equal to the number of the suction holes 11; the exhaust valve plate 3 includes an exhaust valve plate body 31 and a The exhaust tongue 32 of the main body, the exhaust tongue 32 is covered with the exhaust hole 12, and the number of the exhaust tongue 32 is equal to the number of the exhaust hole 12; Waist-shaped structure, the two suction reeds 22 are adjacently arranged on the suction valve plate body 21 and have opposite opening directions.

To sum up, the embodiments of the present invention provide a double-reed suction and exhaust valve assembly and a compressor, and the compressor includes the double-reed suction and exhaust valve assembly. The double-reed suction and exhaust valve assembly includes a suction valve plate 2, a valve plate 1, and an exhaust valve plate 3, and the valve plate is provided with two suction holes 11 and two exhaust holes 12; The suction valve piece 2 is provided with two suction tongues 22, and the exhaust valve piece 3 is provided with two discharge tongues 32; the suction tongue 22 has a waist-shaped structure, and the two suction tongues The springs 22 are adjacently arranged on the suction valve plate body 21 with opposite opening directions. Under the condition that the space of the valve plate 1 is the same, the suction reed 22 and the exhaust reed 31 have a waist-shaped structure. The reeds 22 are closely arranged, which minimizes the area occupied by the suction reeds 22, saves the space of the valve plate, and also ensures a longer lever arm and a lower opening resistance. Such a design can maximize the area of the suction hole 11 and the discharge hole 12 under the condition that the valve plate 1 has a small area and other conditions are the same, so as to improve the suction and discharge efficiency, thereby improving the overall performance of the compressor. machine efficiency.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement" and "installation" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship, or the orientation or positional relationship that is usually placed when the product of the invention is used, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, in order to simplify the description. The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention. Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A double-reed suction and exhaust valve assembly, comprising a suction valve sheet, a valve plate, and an exhaust valve sheet stacked in sequence from top to bottom, wherein the valve plate is provided with two suction valves hole and two vent holes; The suction valve piece includes a suction valve piece body and a suction reed disposed on the suction valve piece body, the suction reed is covered with the suction hole, and the number of the suction reed is equal to the number of the suction holes; The exhaust valve plate includes an exhaust valve plate body and an exhaust reed arranged on the exhaust valve plate body, the exhaust reed is covered with the exhaust hole, and the number of the exhaust reed Equal to the number of vent holes; The suction reed has a waist-shaped structure, and the two suction reeds are adjacently arranged on the suction valve plate body with opposite opening directions. 2 . The double-reed suction and exhaust valve assembly according to claim 1 , wherein the suction valve plate body and the exhaust valve plate body are both provided with through holes, and the suction reed is provided with 2 . In the through hole on the intake valve plate body, the exhaust reed is arranged in the through hole on the exhaust valve plate body. 3 . The double-reed suction and discharge valve assembly according to claim 2 , wherein the suction and discharge reeds both comprise a connecting end and a movable end away from the connecting end, and the movable end is 3 . There is a gap with the hole wall of the through hole, and the connecting end is connected to the hole wall of the through hole and is integrally formed with the valve plate body. 4 . The double-reed suction and exhaust valve assembly according to claim 3 , wherein a part of the suction tongue close to the movable end is covered with the suction hole; the exhaust tongue is close to the A part of the movable end is covered with the exhaust hole. 5 . The double-reed suction and exhaust valve assembly according to claim 4 , further comprising a connecting piece, wherein the valve plate, the suction valve sheet and the exhaust valve sheet are respectively provided with a first mounting hole, a second mounting hole and a second mounting hole. There are two installation holes and a third installation hole, and the connecting piece fixes the suction valve plate and the exhaust valve plate on the valve plate through the first installation hole, the second installation hole and the third installation hole. 6 . The double-reed intake and exhaust valve assembly according to claim 5 , wherein the center line of the exhaust reed coincides with the center of the third installation hole near the connecting end of the exhaust reed. 7 . 7. The double-reed suction-discharge valve assembly according to claim 6, wherein the connecting member is a screw. 8 . The double-reed suction and exhaust valve assembly according to claim 1 , further comprising an exhaust buffer sheet disposed on the side of the exhaust valve sheet away from the valve plate. 9 . 9 . A compressor, characterized in that, the compressor comprises the double-reed suction and discharge valve assembly according to any one of claims 1 to 8 .

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