A three-reed suction valve for refrigerator compressor

Abstract

The invention discloses a three-reed air intake valve plate of a refrigerator compressor, comprising a valve plate, three main reeds are arranged on the valve plate, an arc valve gap is formed between the main reeds and the valve plate, the main reeds comprise a tail end, a cantilever and a head end, the middle main reed is arranged in parallel with the edge of the valve plate, the main reeds on both sides are arranged symmetrically with respect to the axis of the middle main reed, a through hole is arranged between the cantilevers of adjacent main reeds on the valve plate, arc grooves are arranged at the four corners of the valve plate, mounting holes are symmetrically arranged on the outer side of the main reeds on the valve plate, the head ends of the main reeds protrude parallel to the plane of the valve plate and are smoothly connected to the cantilevers and tail ends of the main reeds in sequence; the invention avoids the intersection of the air intake flow and improves the air intake efficiency by staggering the three reeds head to tail, the head end of the main reed protrudes parallel to the valve plate, and the smooth curvature of the cantilever and the tail end is utilized to improve the fatigue resistance of the cantilever, thereby improving the sealing performance and the refrigeration efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of air suction valve plates, and in particular to a three-tongue-reed air suction valve plate of a refrigerator compressor. Background Art

[0002] The suction and exhaust valve plate of refrigerator compressor is one of the most critical parts of refrigerator compressor. Since it has to bear the force of alternating loads thousands or even tens of thousands of times per minute when the refrigerator compressor is running, the tongue spring in the suction valve plate plays a vital role. The tongue spring consists of a tail end, a cantilever and a tongue end. The tongue end is used to seal the suction hole. The cantilever provides elastic variables. When the compressor is in the suction state, the cantilever opens, and the tongue end is separated from the suction hole to inhale. After the suction is completed, under the action of the restoring force of the cantilever, the tongue end is close to the suction hole again, and reciprocates like this. The patent number of our company is CN201711235098. 9 discloses a suction valve plate for a single-cylinder refrigerator compressor with multiple tongue reeds, which adopts three tongue reed bodies that are rotationally symmetrically arranged about the center of the valve plate body. Although this arrangement can improve the sealing performance, reduce the storage flow of refrigerant in the gap, and improve the refrigeration efficiency, in actual work, the three suction holes are arranged in a ring shape, and the three suction holes form three air flows, which will produce a crossing phenomenon during work, causing the formation of a high-pressure area in the crossing area, reducing the gas flow rate, and affecting the suction efficiency. In addition, during the reciprocating motion of the tongue reed body, the fatigue resistance of the cantilever is reduced, which affects the sealing formation of the tongue end and the suction efficiency. Summary of the invention

[0003] The main purpose of the present invention is to provide a three-reed suction valve plate for a refrigerator compressor. By staggering the three reeds head to tail, the intersection of the suction airflow is avoided and the suction efficiency is improved. The through hole is arranged between the cantilevers of the two reeds to reduce the storage flow of the refrigerant in the gap and improve the refrigeration efficiency of the equipment. The head end of the main reed protrudes parallel to the valve plate, and the smooth curvature of the cantilever and the tail end is utilized to improve the fatigue resistance of the cantilever, thereby improving the sealing performance, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a three-reed suction valve plate of a refrigerator compressor, including a valve plate, three main reeds are provided on the valve plate, an arc-shaped valve gap is formed between the main reed and the valve plate, the main reed includes a tail end, a cantilever and a head end, the three main reeds are arranged in an array, the middle main reed is arranged parallel to the edge of the valve plate, the main reeds on both sides are symmetrically arranged about the axis of the middle main reed, the valve plate is provided with a through hole between the cantilevers of adjacent main reeds, there are two through holes, arc grooves are provided at the four corners of the valve plate, the valve plate is symmetrically provided with mounting holes on the outside of the main reeds, the head end of the main reed protrudes parallel to the plane of the valve plate and is smoothly connected to the cantilever and the tail end of the main reed in sequence.

[0005] Preferably, an inner tongue reed is provided on the cantilever of the main tongue reed, the inner tongue reed and the main tongue reed are located on the same axis and are arranged head to tail in opposite directions, and an inner valve gap is formed between the inner tongue reed and the cantilever of the main tongue reed.

[0006] Preferably, the inner tongue reed is arranged in an arc shape and the arc curve is consistent with the cantilever of the main tongue reed.

[0007] Preferably, the length of the inner tongue reed is 2 / 3 of the cantilever length of the main tongue reed.

[0008] Preferably, the width of the inner valve gap is 1 / 2 of the width of the arc-shaped valve gap.

[0009] Preferably, a semicircular groove is provided on a side wall of the valve plate, and a semicircular block corresponding to the semicircular groove is provided on the other side wall of the valve plate.

[0010] Preferably, the through hole is located in the middle of the cantilever adjacent to the main tongue spring and the through hole is connected to the arc-shaped valve gaps on both sides of the through hole.

[0011] Preferably, the main tongue reeds on both sides are arranged to be inclined away from the main tongue reed in the middle.

[0012] Preferably, the axes of the main reeds on both sides are offset by 5-10° with respect to the axis of the main reed in the middle.

[0013] Compared with the traditional technology, the beneficial effects produced by the present invention are as follows: the present invention avoids the crossing of the suction airflow and improves the suction efficiency by staggering the three tongue reeds head to tail, and arranges the through hole between the cantilevers of the two tongue reeds to reduce the storage flow of the refrigerant in the gap and improve the refrigeration efficiency of the equipment, and the head end of the main tongue reed protrudes parallel to the valve plate, and utilizes the smooth curvature of the cantilever and the tail end to improve the fatigue resistance of the cantilever, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0015] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0016] Figure 3 It is a side schematic diagram of the overall structure of the present invention.

[0017] In the figure: 1, valve plate; 2, main tongue spring; 21, tail end; 22, cantilever; 23, head end; 3, arc valve gap; 4, through hole; 5, arc groove; 6, mounting hole; 7, inner tongue spring; 8, inner valve gap; 9, semicircular groove; 10, semicircular block. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] Example 1

[0020] like Figure 1 , 3 As shown, a three-reed suction valve plate of a refrigerator compressor comprises a valve plate 1, three main reeds 2 are provided on the valve plate 1, an arc valve gap 3 is formed between the main reeds 2 and the valve plate 1, the main reed 2 comprises a tail end 21, a cantilever 22 and a head end 23, the axes of the three main reeds 2 are arranged in parallel, the middle main reed 2 is arranged in parallel with the edge of the valve plate 1, the main reeds 2 on both sides are symmetrically arranged with respect to the axis of the middle main reed 2, the valve plate 1 is provided with a through hole 4 between the cantilevers 22 of adjacent main reeds 2, the through holes 4 are two, arc grooves 5 are provided at the four corners of the valve plate 1, the valve plate 1 is symmetrically provided with mounting holes 6 on the outside of the main reeds 2, the head end 23 of the main reed 2 protrudes parallel to the plane of the valve plate 1 and is smoothly connected in sequence The cantilever 22 and the tail end 21 of the main tongue reed 2 are connected, and an inner tongue reed 7 is provided on the cantilever 22 of the main tongue reed 2. The inner tongue reed 7 and the main tongue reed 2 are located on the same axis and are arranged head to tail in opposite directions. The inner tongue reed 7 is arranged in an arc shape and the arc curve is consistent with the cantilever 22 of the main tongue reed 2. An inner valve gap 8 is formed between the inner tongue reed 7 and the cantilever 22 of the main tongue reed 2. The length of the inner tongue reed 7 is 2 / 3 of the length of the cantilever 22 of the main tongue reed 2, and the width of the inner valve gap 8 is 1 / 2 of the width of the arc valve gap 3. A semicircular groove 9 is provided on the side wall of the valve plate 1, and a semicircular block 10 corresponding to the semicircular groove 9 is provided on the other side wall of the valve plate 1. The through hole 4 is located in the middle of the cantilever 22 of the adjacent main tongue reed 2 and the through hole 4 is connected to the arc valve gap 3 on both sides of the through hole 4.

[0021] Example 2

[0022] like Figure 2 , 3As shown, a three-reed suction valve plate of a refrigerator compressor includes a valve plate 1, three main reeds 2 are provided on the valve plate 1, an arc valve gap 3 is formed between the main reeds 2 and the valve plate 1, the main reeds 2 include a tail end 21, a cantilever 22 and a head end 23, the main reeds 2 on both sides are inclined away from the main reed 2 in the middle, and the axes of the main reeds 2 on both sides are offset by 5-10° with the axis of the main reed 2 in the middle as the center, the main reed 2 in the middle is arranged parallel to the edge of the valve plate 1, the main reeds 2 on both sides are symmetrically arranged with respect to the axis of the main reed 2 in the middle, the valve plate 1 is provided with a through hole 4 between the cantilevers 22 of adjacent main reeds 2, the number of through holes 4 is two, arc grooves 5 are provided at the four corners of the valve plate 1, the valve plate 1 is provided with mounting holes 6 symmetrically on the outer sides of the main reeds 2, the main reeds The head end 23 of the spring 2 protrudes parallel to the plane of the valve plate 1 and is smoothly connected to the cantilever 22 and the tail end 21 of the main tongue spring 2 in sequence. An inner tongue spring 7 is provided on the cantilever 22 of the main tongue spring 2. The inner tongue spring 7 and the main tongue spring 2 are located on the same axis and are arranged head to tail in opposite directions. The inner tongue spring 7 is arranged in an arc shape and the arc curve is consistent with the cantilever 22 of the main tongue spring 2. An inner valve gap 8 is formed between the inner tongue spring 7 and the cantilever 22 of the main tongue spring 2. The length of the inner tongue spring 7 is 2 / 3 of the length of the cantilever 22 of the main tongue spring 2, and the width of the inner valve gap 8 is 1 / 2 of the width of the arc valve gap 3. A semicircular groove 9 is provided on the side wall of the valve plate 1, and a semicircular block 10 corresponding to the semicircular groove 9 is provided on the other side wall of the valve plate 1. The through hole 4 is located in the middle of the cantilever 22 of the adjacent main tongue spring 2 and the through hole 4 is connected to the arc valve gap 3 on both sides of the through hole 4.

[0023] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A three-reed suction valve for a refrigerator compressor, comprising a valve plate, characterized in that: Three main tongue springs are provided on the valve plate, and an arc-shaped valve gap is formed between the main tongue spring and the valve plate. The main tongue spring includes a tail end, a cantilever and a head end. The three main tongue springs are arranged in an array and staggered head to tail. The middle main tongue spring is arranged parallel to the edge of the valve plate, and the main tongue springs on both sides are symmetrically arranged about the axis of the middle main tongue spring. A through hole is provided on the valve plate between the cantilevers of adjacent main tongue springs, and there are two through holes. Arc grooves are provided at the four corners of the valve plate, and mounting holes are symmetrically provided on the valve plate on the outside of the main tongue springs. The head end of the main tongue spring protrudes parallel to the plane of the valve plate and is smoothly connected to the cantilever and the tail end of the main tongue spring in sequence.

2. The three-reed suction valve of a refrigerator compressor according to claim 1, characterized in that: An inner tongue reed is arranged on the cantilever of the main tongue reed. The inner tongue reed and the main tongue reed are located on the same axis and are arranged head to tail in opposite directions. An inner valve gap is formed between the inner tongue reed and the cantilever of the main tongue reed.

3. The three-reed suction valve of a refrigerator compressor according to claim 2, characterized in that: The inner tongue spring is arranged in an arc shape and the arc curve is consistent with the cantilever of the main tongue spring.

4. The three-reed suction valve of a refrigerator compressor according to claim 2, characterized in that: The length of the inner tongue reed is 2 / 3 of the cantilever length of the main tongue reed.

5. The three-reed suction valve of a refrigerator compressor according to claim 2, characterized in that: The width of the inner valve gap is 1 / 2 of the width of the arc-shaped valve gap.

6. The three-reed suction valve of a refrigerator compressor according to claim 1, characterized in that: A semicircular groove is provided on the side wall of the valve plate, and a semicircular block corresponding to the semicircular groove is provided on the other side wall of the valve plate.

7. The three-reed suction valve of a refrigerator compressor according to claim 1, characterized in that: The through hole is located in the middle of the cantilever adjacent to the main tongue spring and is connected to the arc-shaped valve gaps on both sides of the through hole.

8. The three-reed suction valve of a refrigerator compressor according to claim 1, characterized in that: The main tongue reeds on both sides are arranged to be inclined in a direction away from the main tongue reed in the middle.

9. The three-reed suction valve of a refrigerator compressor according to claim 8, characterized in that: The axes of the main reeds on both sides are offset by 5-10° with the axis of the main reed in the middle as the center.

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