CN116181654A - Exhaust valve plate, pump body assembly, compressor and air conditioner - Google Patents

Exhaust valve plate, pump body assembly, compressor and air conditioner Download PDF

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Publication number
CN116181654A
CN116181654A CN202310085784.1A CN202310085784A CN116181654A CN 116181654 A CN116181654 A CN 116181654A CN 202310085784 A CN202310085784 A CN 202310085784A CN 116181654 A CN116181654 A CN 116181654A
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China
Prior art keywords
valve plate
compressor
exhaust valve
exhaust
head
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CN202310085784.1A
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Chinese (zh)
Inventor
魏会军
张心爱
胡远培
杨欧翔
杨春霞
姜秋来
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202310085784.1A priority Critical patent/CN116181654A/en
Publication of CN116181654A publication Critical patent/CN116181654A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3566—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along more than line or surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The invention provides an exhaust valve plate, a pump body assembly, a compressor and an air conditioner. The exhaust valve plate comprises a fixing part, a connecting part and a head part, wherein the connecting part is connected with the fixing part and the head part, the head part covers an exhaust port, the connecting part and the head part form a free bending section, and the total length of the free bending section is L 0 The free bending section has a width w, a thickness t, a head circular shape and a diameter d from one end near the fixing part to any position between the center of the head 0 The maximum operating frequency of the compressor is f, the exhaust volume of the compressor communicated with the exhaust port is V, the diameter of the exhaust port is d, and the parameter L 0 、w、t、d 0 F, V, d satisfy:
Figure DDA0004068824900000011
and f is greater than or equal to 120Hz. According to the exhaust valve plate, the high-frequency reliability of the valve plate can be improved, the opening rigidity of the valve plate is reduced, the closing rigidity of the valve plate is increased, the valve plate opening resistance is not excessive, and meanwhile, the exhaust reflux can be reduced by rapidly closing, so that the energy efficiency of a compressor is considered.

Description

Exhaust valve plate, pump body assembly, compressor and air conditioner
Technical Field
The invention relates to the technical field of compressors, in particular to an exhaust valve plate, a pump body assembly, a compressor and an air conditioner.
Background
The rotary compressor pump body component comprises main parts such as a cylinder, a roller, a crankshaft, a sliding vane, an upper flange, a lower flange and the like, wherein the parts are mutually matched to form a closed suction and exhaust cavity, and the volume of the suction and exhaust cavity of the compressor is changed under the rotary driving action of the crankshaft, so that the periodical suction, compression and exhaust processes of the compressor are realized. The valve plate is assembled and covered at the position of the flange exhaust port, is one of core parts of the pump body component of the rotary compressor, and is periodically opened and closed along with the suction and exhaust of the compressor. When the gas pressure in the exhaust cavity reaches a certain critical value, the exhaust valve plate is opened until the pressure in the exhaust cavity is lower than the external pressure of the pump body, and the valve plate is closed, so that one exhaust process of the compressor is completed.
The exhaust valve plate mainly comprises a fixing part, a connecting part and a head part, wherein the fixing part is provided with a mounting hole for assembling and fixing the exhaust valve plate on the flange. The traditional exhaust valve plate is of an equal-thickness structure and is mainly characterized in that: the fixing part adopts parallel section design, and the connecting part is connected with the fixing part and the head part, and is of equal width design with narrower width than the fixing part. The valve block back is equipped with the valve block stopper that has certain crooked lift, and when the valve block was opened, valve block connecting portion and head were progressively wound and are pasted in the crooked curved surface of stopper, and then play certain spacing restraint effect to opening of valve block.
With the development of high-speed miniaturization of compressors, the operating frequency of compressors is gradually increased, and for high-frequency compressors, the risks of fatigue damage and even fracture are greatly increased due to the high-frequency reciprocating opening and closing of the exhaust valve plate, and the reliability of the high-frequency compressor is severely challenged. In the related art, the high-frequency reliability of the valve plate is generally improved by adopting a technical means of thickening the valve plate, but the opening resistance of the valve plate is greatly increased by simply thickening the valve plate, so that the valve plate is not beneficial to high efficiency. How to ensure the high-frequency reliability of the valve plate while considering the energy efficiency is a bottleneck problem to be solved in the design of the high-speed compressor.
Disclosure of Invention
The invention mainly aims to provide an exhaust valve plate, a pump body assembly, a compressor and an air conditioner, which can improve the high-frequency reliability of the valve plate, reduce the opening rigidity of the valve plate and increase the closing rigidity of the valve plate, ensure that the opening resistance of the valve plate can not be excessively large, and simultaneously can be rapidly closed to reduce the exhaust reflux so as to give consideration to the energy efficiency of the compressor.
In order to achieve the above object, according to an aspect of the present invention, there is provided an exhaust valve sheet including a fixing portion provided with a mounting hole, a connecting portion connecting the fixing portion and a head portion configured to cover an exhaust port, the connecting portion and the head portion together forming a free bending section having a total length L 0 The free bending section has a width w, a thickness t, a head circular shape and a diameter d from one end near the fixing part to any position between the center of the head 0 The maximum operating frequency of the compressor is f, the exhaust volume of a single cavity of the compressor communicated with the exhaust port is V, the diameter of the exhaust port is d, and the parameter L 0 、w、t、d 0 F, V, d satisfy:
Figure BDA0004068824880000021
and f is more than or equal to 120Hz.
Further, the method comprises the steps of,
Figure BDA0004068824880000022
/>
further, the distance from any position of the free bending section to the starting end of the free bending section near the fixed part is set as x, and the parameters w, t and x satisfy the following conditions: w is equal to or less than 0.608, t is equal to or less than 16.341, and w is equal to or more than 0/x.
Further, 0.927.ltoreq.w.ltoreq. 8.453,0.ltoreq.w.t/x < 1, and w.t/x is a constant.
Further, w t/x gradually increases as x increases.
Further, the thicknesses of the fixing part, the connecting part and the head part of the exhaust valve plate are consistent; and/or the width of the fixing part and the diameter of the head part are larger than the width of the connecting part.
Further, projection is performed along the central axis direction of the head, on the projection surface, the connecting part and the head are connected through an arc section, one end of the arc section is tangent with the side wall of the connecting part, and the other end of the arc section is tangent with the excircle of the head.
According to another aspect of the present invention, there is provided a pump body assembly including a discharge valve plate, the discharge valve plate being the discharge valve plate described above.
According to another aspect of the present invention, there is provided a compressor comprising the discharge valve plate described above or the pump body assembly described above.
Further, the maximum operating frequency f of the compressor satisfies 120 Hz.ltoreq.f.ltoreq.200 Hz.
Further, 140Hz is less than or equal to f is less than or equal to 180Hz.
According to another aspect of the present invention, there is provided an air conditioner including a compressor, which is the above-mentioned compressor.
By applying the technical scheme of the invention, the exhaust valve plate comprises the fixing part, the connecting part and the head part, the fixing part is provided with the mounting hole, the fixing part is configured to assemble and fix the exhaust valve plate, the connecting part is connected with the fixing part and the head part, the head part is configured to cover the exhaust port, the connecting part and the head part jointly form a free bending section, and the total length of the free bending section is L 0 The free bending section has a width w, a thickness t, a head circular shape and a diameter d from one end near the fixing part to any position between the center of the head 0 The maximum operating frequency of the compressor is f, the exhaust volume of the compressor communicated with the exhaust port is V, the diameter of the exhaust port is d, and the parameter L 0 、w、t、d 0 F, V, d satisfy:
Figure BDA0004068824880000023
and f is more than or equal to 120Hz.When the exhaust valve block runs at high frequency of the compressor, the instantaneous speed of the exhaust valve block slapping the limiter can be reduced, the deformation and the side tilting of the exhaust valve block are reduced, the overlarge local contact stress caused by the local contact of the exhaust valve block with the slapping valve seat or the limiter is avoided, and additional bending moment is generated, so that the high-frequency reliability of the exhaust valve block is improved; when the exhaust valve plate is opened, the side, close to the fixed part, of the exhaust valve plate connecting part is wound and stuck with the limiter, so that the rigidity is low, the opening resistance is low, the exhaust resistance is reduced, the exhaust power consumption is reduced, and the energy efficiency of the compressor is improved; at the end of exhaust, the rigidity of the exhaust valve plate is greatly improved, so that the exhaust valve plate rebounds rapidly, the exhaust reflux is reduced, the refrigerating capacity of the compressor is improved, and the energy efficiency of the compressor is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a schematic structural diagram of an exhaust valve sheet according to an embodiment of the present invention;
FIG. 2 shows a schematic cross-sectional view of A-A of FIG. 1;
fig. 3 is a schematic diagram showing a matching structure of an exhaust valve plate and a limiter according to an embodiment of the present invention;
FIG. 4 shows a schematic structural view of a pump body assembly according to an embodiment of the present invention;
FIG. 5 shows an enlarged schematic view of the structure at k of FIG. 4;
FIG. 6 shows a schematic diagram of the cylinder structure of the pump body assembly according to an embodiment of the present invention;
FIG. 7 is a graph showing the displacement curve of the exhaust valve sheet according to the embodiment of the present invention and the exhaust valve sheet according to the related art during high frequency operation; and
fig. 8 is a graph showing the displacement curve of the exhaust valve sheet according to the embodiment of the present invention and the exhaust valve sheet according to the related art in comparison with the low frequency operation.
Wherein the above figures include the following reference numerals:
1. an upper flange; 11. a flange exhaust port; 2. a cylinder; 21. an air suction cavity; 22. an exhaust chamber; 3. a crankshaft; 4. a roller; 5. a lower flange; 6. a sliding sheet; 7. an exhaust valve plate; 71. a fixing part; 72. a connection part; 73. a head; 74. a mounting hole; 8. a limiter; 81. a straight section; 82. a curved section; 9. and (5) a rivet.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 4 to 6, a pump body assembly of the rotary compressor comprises an upper flange 1, a cylinder 2, a crankshaft 3, a roller 4, a lower flange 5, a sliding sheet 6, an exhaust assembly exhaust valve sheet 7, a limiter 8 and other main parts, wherein the parts are mutually matched to form a closed air suction cavity 21 and an air exhaust cavity 22, and under the rotary driving action of the crankshaft 3, the volumes of the air suction cavity 21 and the air exhaust cavity 22 of the compressor are changed, so that the periodical air suction, compression and exhaust processes of the compressor are realized.
The flange is provided with a flange exhaust port 11, and the exhaust valve plate 7 is assembled and covered on the flange exhaust port 11 and is periodically opened and closed along with the suction and exhaust of the compressor. When the gas pressure in the exhaust cavity reaches a certain critical value, the exhaust valve plate 7 is opened until the pressure in the exhaust cavity 22 is lower than the external pressure of the pump body, and the exhaust valve plate 7 is closed, so that one exhaust process of the compressor is completed.
The exhaust valve plate 7 is composed of three parts of a fixing part 71, a connecting part 72 and a head part 73, wherein the fixing part 71 is provided with a mounting hole 74 for assembling and fixing the exhaust valve plate 7 on the upper flange 1. The exhaust valve plate 7 in the related art has a uniform thickness structure, the fixing portion 71 is designed in parallel segments, and the connecting portion 72 connects the fixing portion 71 and the head 73 and has a uniform width narrower than the fixing portion 71.
The back of the exhaust valve block 7 is provided with a valve block limiter 8 with a certain bending lift, the limiter 8 comprises a straight section 81 and a bending section 82, the straight section 81 is matched and fixed with a fixing part 71 of the exhaust valve block 7, when the exhaust valve block 7 is opened, the valve block connecting part 72 and the head 73 are gradually wound on a bending curved surface of the bending section 82 of the limiter 8, and then a certain limiting and restraining effect is achieved on the opening of the exhaust valve block 7.
For the high-frequency compressor, the exhaust valve plate is opened and closed in a high-frequency reciprocating way, so that the risk of fatigue damage and even fracture is greatly increased, and the reliability of the compressor is severely challenged. In the prior art, the high-frequency reliability of the valve plate is generally improved by adopting a technical means of thickening the valve plate, but the valve plate opening resistance is greatly increased by simply thickening the valve plate, so that the valve plate is not beneficial to high efficiency.
Based on the above analysis, in order to solve the problem occurring when the compressor is operated at a high frequency, as shown in fig. 1 to 6, according to an embodiment of the present invention, the discharge valve plate includes a fixing portion 71, a connecting portion 72 and a head portion 73, the fixing portion 71 is provided with a mounting hole 74, the fixing portion 71 is configured to perform assembly fixing of the discharge valve plate, the connecting portion 72 connects the fixing portion 71 and the head portion 73, the head portion 73 is configured to cover the flange discharge port 11, the connecting portion 72 and the head portion 73 together constitute a free bending section, the total length of the free bending section is L0, the free bending section has a width w, a thickness t, the head portion 73 is circular, a diameter d0, a maximum operating frequency f of the compressor, a discharge volume of a single chamber of the compressor communicating with the flange discharge port 11 is V, a diameter of the flange discharge port 11 is d, and parameters L0, w, t, d0, f, V, d satisfy:
Figure BDA0004068824880000041
and f is more than or equal to 120Hz. Wherein the total length of the free bending section is L 0 Is the middle length of the connecting part 72 and the head part 73 of the exhaust valve plate in a flat state. />
The discharge volume V of the single chamber communicating with the flange exhaust port 11 is the compressor displacement when the compressor is a single cylinder compressor, and is the displacement of a single cylinder communicating with the flange exhaust port 11 when the compressor is a multi-cylinder compressor.
By carrying out parameter limiting on the associated expression, the suitability of the unit flow area exhaust capacity of the single cavity and the valve plate stiffness parameter of the high-frequency compressor in high-frequency operation can be optimally designed.
When the compressor runs at high frequency of more than 120Hz, the instantaneous speed of the exhaust valve plate for slapping the limiter 8 can be reduced, the deformation and the side tilting of the exhaust valve plate are reduced, the excessive local contact stress caused by the local contact of the exhaust valve plate for slapping the valve seat or the limiter 8 is avoided, and additional bending moment is generated, so that the high-frequency reliability of the exhaust valve plate is improved; when the exhaust valve plate is opened, the connecting part 72 of the exhaust valve plate is wound and stuck with the limiter 8 at one side close to the fixed part 71, so that the rigidity is smaller, the opening resistance is smaller, the exhaust resistance is reduced, the exhaust power consumption is reduced, and the compressor energy efficiency is improved; at the end of exhaust, the rigidity of the valve plate is greatly improved, so that the valve plate is quickly rebounded, the exhaust reflux is reduced, the refrigerating capacity of the compressor is improved, and the energy efficiency of the compressor is improved.
In one embodiment of the present invention, in one embodiment,
Figure BDA0004068824880000042
in one embodiment, the distance from any position of the free curved section to the starting end of the free curved section near the fixed portion 71 is set to x, and the parameters w, t, x satisfy: w is equal to or less than 0.608, t is equal to or less than 16.341, and w is equal to or more than 0/x.
By limiting the range of w x t and the range of w x/x, the valve plate variable stiffness structural design can be realized by limiting the parameter of the associated expression, and meanwhile, the valve plate structural parameters are optimized.
In one embodiment, the cross-section of the air release plate in a plane perpendicular to the mounting surface is rectangular, and for a rectangular cross-section, the stiffness ei=e×wt 3 And/12, under the condition of determining the valve plate material (E is constant), the valve plate rigidity is realized by changing the thickness t or the width b, w is t, the valve plate rigidity characteristic can be simply expressed, and w is t/x, and the variable rigidity valve plate structure is represented.
In one embodiment, 0.927+.w+. 8.453,0 +.w/x < 1, where w/x is a constant, the valve sheet w increases gradually from the beginning of the connection to the head and is linear.
Based on the exhaust valve plate with the structural characteristics, the unit flow area exhaust volume and the unit flow area exhaust volume of a single cavity of the high-frequency compressor during high-frequency operation are increasedThe valve plate rigidity parameter suitability realizes the optimal design, and simultaneously, the rigidity of the M sections of the free bending section part of the valve plate gradually increases along the x direction (from the fixed part to the head direction shown in fig. 1), so that the rigidity and bending stress change curve of the valve plate in the opening and winding process of the valve plate are optimized. The technical effects that can reach are: in the initial stage of opening the exhaust valve plate, the free bending section of the exhaust valve plate is only close to the side where the fixing part 71 is located and is wound and stuck with the limiter 8 and has certain lift displacement, and the rigidity of the exhaust valve plate is smaller in the initial winding and stuck state, so that the opening resistance and the opening resistance loss of the exhaust valve plate are reduced, and the power of the compressor is reduced. In the process of opening the exhaust valve plate, the exhaust valve plate L 0 The segment is wound and stuck to the curved surface of the limiter 8 gradually from x direction, and under the high-frequency operation condition, the lift of the exhaust valve plate can reach the limit value of the lift constraint of the limiter 8, and the exhaust valve plate is wound and stuck to L 0 When the head 73 of the section is positioned, the rigidity is greatly increased, so that rebound closure of the exhaust valve plate under high frequency is effectively accelerated, the impact speed of the exhaust valve plate on the limiter 8 is reduced while exhaust reflux is reduced, and the reliability risk of high-frequency fracture of the exhaust valve plate is reduced while the high-frequency refrigerating capacity of the compressor is improved. For the low-frequency operation condition, the lift of the exhaust valve plate is relatively smaller, the winding end position of the exhaust valve plate is far away from the position of the head 73, and the integral rigidity of the exhaust valve plate is not too high in the whole exhaust process, so that the low-frequency exhaust resistance and the exhaust consumption power are reduced, the low-frequency energy efficiency is improved, and the purposes of guaranteeing the high-frequency reliability of the exhaust valve plate and simultaneously considering the energy efficiency of a compressor, particularly the low-frequency energy efficiency, are finally achieved.
In one embodiment, w×t/x increases gradually with increasing x, representing a curvilinear increase in w×t from the beginning of the connection to the head.
Because the main influencing factor of the bending fracture of the exhaust valve plate is that the rigidity of the side, close to the fixed part 71, of the connecting part 72 of the exhaust valve plate is smaller as the influence is larger as x increases, the change rate of the rigidity of the connecting part 72 from the side, where the fixed part 71 is located, to the side, where the head 73 is located, is smaller, and the structure, where the rigidity ratio w t/x is a constant, of the side, where the head 73 is located, is relatively larger, so that the bending fatigue strength of the exhaust valve plate can be better optimized, the low-frequency opening performance of the exhaust valve plate is ensured, and the rebound closure of the exhaust valve plate at high frequency is quicker, thereby improving the high-frequency performance and reliability of the compressor.
In one embodiment, the thicknesses of the fixing portion 71, the connecting portion 72, and the head portion 73 of the discharge valve sheet are uniform.
In one embodiment, the width of the securing portion 71 and the diameter of the head portion 73 are both greater than the width of the connecting portion 72.
In one embodiment, the projection is performed along the central axis direction of the head 73, on which projection surface the connection portion 72 and the head 73 are connected by a circular arc section, one end of which is tangent to the side wall of the connection portion 72, and the other end of which is tangent to the outer circle of the head 73.
According to an embodiment of the present invention, the pump body assembly includes the air discharge valve 7, and the air discharge valve 7 is the air discharge valve described above.
The pump body assembly further comprises an upper flange 1, a cylinder 2, a crankshaft 3, a roller 4, a lower flange 5 and a sliding sheet 6, all parts are mutually matched to form a closed air suction cavity 21 and an air discharge cavity 22, and under the rotary driving action of the crankshaft 3, the volumes of the air suction cavity 21 and the air discharge cavity 22 of the compressor are changed, so that the periodical air suction, compression and air discharge processes of the compressor are realized.
The flange exhaust port 11 is arranged on the upper flange 1, mounting holes are formed in the exhaust valve plate 7 and the limiter 8, rivets 9 are arranged in the mounting holes, and the rivet 9 fixes the exhaust valve plate 7 and the limiter 8 on the upper flange 1 together.
According to an embodiment of the invention, the compressor comprises the above-mentioned discharge valve plate or the above-mentioned pump body assembly.
In one embodiment, the maximum operating frequency f of the compressor meets the condition that f is less than or equal to 120Hz and less than or equal to 200Hz, so that the exhaust valve plate provided by the embodiment of the invention has more obvious energy efficiency and reliability advantages.
In one embodiment, 140 Hz.ltoreq.f.ltoreq.180 Hz.
In one embodiment, taking a specific model to operate under a specific working condition as an example, as shown in fig. 7 and 8, under the operating conditions of high frequency 165Hz and low frequency 25Hz respectively, the displacement of the exhaust valve plate 7 is compared with the theoretical simulation result of the change curve of the pump body rotation angle, and compared with the exhaust valve plate in the related art, the exhaust valve plate 7 in the embodiment of the invention has the following main advantages in terms of the displacement of the exhaust valve plate 7 during the high-low frequency operation:
the high-frequency and low-frequency flutter of the exhaust valve plate 7 is improved, and the displacement fluctuation of the exhaust valve plate 7 is relatively small in the process of opening and exhausting;
the exhaust valve plate 7 is easier to open (the opening resistance is smaller), and the opening angle is smaller than that of the related machine type;
the high-frequency delayed closing phenomenon of the exhaust valve plate 7 is greatly improved, the exhaust valve plate can be more rapidly rebounded and closed, the exhaust reflux is reduced, and the refrigerating capacity is improved; and in the low-frequency operation, the exhaust valve plate 7 can be kept in a high-lift state for a longer time, so that the exhaust resistance is reduced, the exhaust quantity is improved, and the low-frequency energy efficiency is improved.
According to an embodiment of the present invention, an air conditioner includes a compressor, which is the compressor described above.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. The exhaust valve plate is characterized by comprising a fixing part (71), a connecting part (72) and a head part (73), wherein the fixing part (71) is provided with a mounting hole(74) The fixing part (71) is configured to fix the exhaust valve plate, the connecting part (72) connects the fixing part (71) and the head part (73), the head part (73) is configured to cover the flange exhaust port (11), the connecting part (72) and the head part (73) jointly form a free bending section, the total length of the free bending section is L0, the free bending section is formed by a width w and a thickness t which are close to one end of the fixing part (71) to any position between the center of the head part (73), the head part (73) is circular, the diameter d0, the maximum operating frequency of the compressor is f, the exhaust volume of a single cavity communicated with the flange exhaust port (11) of the compressor is V, the diameter of the flange exhaust port (11) is d, and the parameters L0, w, t, d0, f, V and d satisfy the following conditions:
Figure FDA0004068824870000011
and f is more than or equal to 120Hz.
2. The exhaust valve plate according to claim 1, wherein,
Figure FDA0004068824870000012
3. the discharge valve plate according to claim 1, characterized in that the distance of any position of the free curved section from the free curved section near the start end of the fixed part (71) is set to x, the parameters w, t, x satisfying: w is equal to or less than 0.608, t is equal to or less than 16.341, and w is equal to or more than 0/x.
4. The valve sheet of claim 3, wherein 0.927+.w+. 8.453,0 +.w/x < 1 and w/t/x is a constant.
5. A valve sheet according to claim 3, wherein w x t/x increases gradually with increasing x.
6. The exhaust valve plate according to any one of claims 1 to 5, characterized in that the thickness of the fixing portion (71), the connecting portion (72) and the head portion (73) of the exhaust valve plate are uniform; and/or the width of the fixing part (71) and the diameter of the head part (73) are larger than the width of the connecting part (72).
7. The exhaust valve plate according to any one of claims 1 to 5, characterized in that the projection is performed in the direction of the central axis of the head portion (73), on which projection surface the connection portion (72) and the head portion (73) are connected by an arc segment, one end of which is tangential to the side wall of the connection portion (72), and the other end of which is tangential to the outer circle of the head portion (73).
8. Pump body assembly comprising an exhaust valve plate (7), characterized in that the exhaust valve plate (7) is an exhaust valve plate according to any one of claims 1 to 7.
9. A compressor comprising the discharge valve sheet of any one of claims 1 to 7 or the pump body assembly of claim 8.
10. The compressor of claim 9, wherein the maximum operating frequency f of the compressor satisfies 120Hz +.f +.200 Hz.
11. The compressor of claim 10, wherein 140Hz +.f +.180 Hz.
12. An air conditioner comprising a compressor, wherein the compressor is the compressor of any one of claims 9 to 11.
CN202310085784.1A 2023-01-17 2023-01-17 Exhaust valve plate, pump body assembly, compressor and air conditioner Pending CN116181654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310085784.1A CN116181654A (en) 2023-01-17 2023-01-17 Exhaust valve plate, pump body assembly, compressor and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310085784.1A CN116181654A (en) 2023-01-17 2023-01-17 Exhaust valve plate, pump body assembly, compressor and air conditioner

Publications (1)

Publication Number Publication Date
CN116181654A true CN116181654A (en) 2023-05-30

Family

ID=86433957

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310085784.1A Pending CN116181654A (en) 2023-01-17 2023-01-17 Exhaust valve plate, pump body assembly, compressor and air conditioner

Country Status (1)

Country Link
CN (1) CN116181654A (en)

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