Air suction valve plate, compressor and refrigeration equipment

Abstract

The utility model discloses an air suction valve plate, compressor and refrigeration equipment relates to compressor technical field, wherein the air suction valve plate includes valve flap and diversion portion, the valve flap is equipped with the first wall surface of departing from the cylinder cavity of compressor cylinder, the diversion portion is connected to the first wall surface, the diversion portion is configured to protrude out of the first wall surface, and the first wall surface is equipped with the first wall surface. In the direction perpendicular to the air suction valve plate, the outer diameter of the flow guide part is gradually narrowed in the direction away from the cylinder cavity. According to the utility model, the flow guide part is additionally arranged on the valve tongue, and when refrigerant airflow ejects the air suction valve plate, the refrigerant airflow diffuses to the periphery of the flow guide part under the flow guide of the side surface of the flow guide part, so that the flow resistance is reduced, the air suction speed is accelerated, and the refrigerating capacity of the compressor is improved; and the refrigerant airflow diffuses to the periphery under the action of the flow guide part, so that the impact on the air suction valve plate can be reduced, a buffering effect is achieved, the vibration of the air suction valve plate is reduced to a certain extent, pneumatic noise is inhibited, and the service life of the compressor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, especially a kind of suction valve sheet, compressor and refrigeration equipment. BACKGROUND

[0002] Reciprocating compressor is a kind of compressor commonly used in refrigerator.Suction valve sheet is installed between cylinder cover and cylinder a kind of reed, its main function is to control the suction volume of compressor and protect compressor.Suction valve sheet opens when compressor inhales, closes at other time.When compressor inhales, refrigerant gas stream opens suction valve sheet in the direction perpendicular to suction valve sheet, on the one hand, it will cause a large amount of flow resistance, slow suction speed, affect the suction efficiency of compressor, thereby affect the refrigerating capacity of refrigerator;On the other hand, it will cause suction valve sheet to tremble, produce pneumatic noise and cause parts wear, reduce the service life of compressor. SUMMARY

[0003] The utility model at least solves one of the technical problems existing in the prior art.The utility model provides a kind of suction valve sheet, can guide flow to refrigerant gas stream, reduce flow resistance, improve the refrigerating capacity of compressor, and the impact of refrigerant gas stream is reduced, to a certain extent, reduce tremble.

[0004] The utility model further provides a kind of compression assembly, compressor and refrigeration equipment with the above-mentioned suction valve sheet.

[0005] According to the suction valve sheet of the first aspect embodiment of the utility model, it is applied to the compressor with cylinder, comprising: center part, is equipped with through-hole;Limiting portion, it is arranged around the center part, the limiting portion is used for fixing the suction valve sheet;Valve tongue, it is connected to the center part and located in the through-hole, the valve tongue is equipped with the first wall surface of the one end of cylinder cavity away from the cylinder;Flow guide portion, it is connected to the first wall surface, the flow guide portion is configured as protruding from the first wall surface, in the direction perpendicular to the suction valve sheet, the outer diameter of the flow guide portion gradually narrows along the direction away from the cylinder cavity.

[0006] According to the suction valve sheet of the utility model embodiment, at least has following beneficial effects:

[0007] By setting flow guide portion on the first wall surface of the one end of valve tongue away from cylinder cavity, flow guide portion protrudes from the first wall surface and in the direction perpendicular to suction valve sheet, outer diameter gradually narrows along the direction away from the cylinder cavity.When refrigerant gas stream opens suction valve sheet, under the flow guide of the side surface of flow guide portion, refrigerant gas stream diffuses to the periphery of flow guide portion, reduces flow resistance, speeds up suction speed, improves the refrigerating capacity of compressor;And refrigerant gas stream diffuses to the periphery under the action of flow guide portion, can reduce the impact on suction valve sheet, play buffering effect, to a certain extent, reduce the tremble of suction valve sheet, inhibit pneumatic noise, improve the service life of compressor.

[0008] According to some embodiments of the present application, the valve tongue comprises an arm portion and a tongue portion connected together, the arm portion is used for fixing the valve tongue, the tongue portion is a free end, and the flow guide portion is arranged on the tongue portion.

[0009] According to some embodiments of the present application, the flow guide portion is in the shape of a circular truncated cone, a conical truncated cone or an elliptical truncated cone, in the direction perpendicular to the air suction valve plate, one end of the flow guide portion connected to the valve tongue is a first bottom surface, the other end of the flow guide portion away from the valve tongue is a second bottom surface, the maximum diameter of the first bottom surface is D1, the maximum diameter of the second bottom surface is D2, and the maximum outer diameter of the tongue portion is D3, and the following conditions are met: 0.6≤D1 / D3≤0.85 and 0<D2 / D1≤0.6.

[0010] According to some embodiments of the present application, the flow guide portion is in the shape of a circular truncated cone, a conical truncated cone or an elliptical truncated cone.

[0011] According to some embodiments of the present application, in the direction perpendicular to the air suction valve plate, the height of the flow guide portion is T1, and the following condition is met: 0.2mm≤T1≤1mm.

[0012] According to some embodiments of the present application, the material of the flow guide portion is plastic, rubber or metal, and the flow guide portion is fixedly connected to the valve tongue by adhesive; or the flow guide portion and the valve tongue are an integral part.

[0013] According to some embodiments of the present application, the air suction valve plate is an integral part, and one end of the valve tongue is fixedly connected to part of the hole wall of the through hole.

[0014] The compressor according to the second aspect of the present application comprises a shell, a compression assembly installed in the shell, the compression assembly comprising an air suction valve plate, a cylinder and a piston, the cylinder being provided with a cylinder cavity, the air suction valve plate being arranged at one end of the cylinder cavity, the piston being arranged in the cylinder cavity, the piston being capable of moving in a direction away from the air suction valve plate to enable refrigerant to be sucked into the cylinder cavity through the valve tongue, a crankshaft comprising an eccentric portion, the eccentric portion being connected to the piston through a connecting rod, and a motor assembly installed in the shell, the motor assembly being used to drive the crankshaft to rotate.

[0015] The compressor according to the embodiments of the present application has at least the following beneficial effects:

[0016] The air suction valve plate of the first aspect embodiment is provided with a flow guide part on the first wall surface of the valve tongue at the end away from the cylinder cavity of the air suction valve plate, the flow guide part protrudes from the first wall surface and gradually narrows in the outer diameter in the direction away from the cylinder cavity in the direction perpendicular to the air suction valve plate. When the refrigerant gas flow pushes the air suction valve plate, the refrigerant gas flow is guided to the four sides of the flow guide part, the refrigerant gas flow is diffused to the four sides of the flow guide part, the flow resistance is reduced, the air suction speed is accelerated, the refrigeration capacity of the compressor is improved, and the impact on the air suction valve plate is reduced by the diffusion of the refrigerant gas flow to the four sides of the flow guide part, the buffering effect is achieved, the vibration of the air suction valve plate is reduced to a certain extent, the aerodynamic noise is inhibited, and the service life of the compressor is improved.

[0017] According to some embodiments of the present application, the valve tongue is provided with a second wall surface at one end of the cylinder cavity, the flow guide part and the valve tongue are an integral part, the flow guide part forms a concave cavity on the second wall surface, and the piston is provided with a convex part at one end of the air suction valve plate, the convex part is configured to fill the concave cavity when the piston moves to the exhaust limit.

[0018] According to some embodiments of the present application, the compression assembly further comprises a valve plate connected with the air suction valve plate, the valve plate is provided with an air suction hole, and in the projection plane perpendicular to the air suction valve plate, the projection of the flow guide part is located in the projection of the air suction hole.

[0019] According to the third aspect embodiment of the present application, the refrigeration equipment comprises the compressor of the above embodiments.

[0020] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in combination with the drawings and embodiments, wherein:

[0022] Figure 1 It is an explosion schematic view of part of the structure of the compression assembly of the compressor of an embodiment of the present application;

[0023] Figure 2 It is a structure schematic view of the air suction valve plate of an embodiment of the present application;

[0024] Figure 3 It is Figure 2 It is a top view schematic view of the valve tongue;

[0025] Figure 4 It is Figure 2 It is a front view schematic view of the valve tongue;

[0026] Figure 5A schematic view of the valve tongue and the piston in the embodiment shown in FIG. 1 when the piston is in the exhaust limiting position.

[0027] Figure 6 A velocity vector cloud chart of the neck pipe port section of the muffler in the BASE style in the related art and the style of the embodiment of the utility model;

[0028] Figure 7 A comparison chart of the lift of the suction valve plate in the BASE style in the related art and the embodiment of the utility model;

[0029] Figure 8 A structural schematic view of the suction valve plate of another embodiment of the utility model;

[0030] Figure 9 A structural schematic view of the suction valve plate and the piston of another embodiment of the utility model;

[0031] Figure 10 A Figure 9 A cooperation schematic view of the valve tongue and the piston in the embodiment shown in FIG. 1 when the piston is in the exhaust limiting position.

[0032] Reference signs:

[0033] Suction valve plate 100; valve tongue 110; first wall surface 111; arm portion 112; narrowed section 1121; tongue portion 113; second wall surface 114; concave cavity 1141; flow guide portion 120; first bottom surface 121; second bottom surface 122; center portion 130; through hole 131; exhaust hole 132; limiting portion 140; limiting hole 141;

[0034] Cylinder head 200;

[0035] Cylinder head gasket 300;

[0036] Valve plate 400; suction hole 410;

[0037] Valve plate gasket 500;

[0038] Piston 600; convex portion 610. DETAILED DESCRIPTION

[0039] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0040] In the description of the utility model, it is understood that the orientation description, such as the orientation or positional relationship of the indication such as upper and lower, is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0041] In the description of the utility model, more refers to two or more. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0042] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation and connection should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0043] The reciprocating compressor is commonly used in refrigeration equipment such as refrigerator, freezer and the like. The reciprocating compressor generally comprises a shell, a compression assembly, a motor assembly, a crankshaft, a crankcase, a connecting rod and a muffler and the like. The compression assembly comprises a piston, a cylinder mounted on the crankcase, and a cylinder cover and an air inlet valve plate mounted on the end of the cylinder. The muffler is mounted on the cylinder cover to mute the refrigerant entering the cylinder. The motor assembly is used to drive the rotation of the crankshaft, and the eccentric part of the crankshaft and the piston are connected through the connecting rod. The rotation of the crankshaft drives the piston to reciprocate in the cylinder, realizing the suction, compression and exhaust of the compression assembly.

[0044] Among them, the air inlet valve plate in the compression assembly is an important part for controlling the suction amount of the compressor and protecting the compressor. The air inlet valve plate is opened when the compressor sucks air, and is closed at other times, which greatly affects the suction efficiency of the compressor, thereby affecting the refrigerating capacity of the refrigerator. At the same time, the air inlet valve plate can also prevent damage due to backflow of gas after the compressor is turned off. The two end faces of the valve tongue of the traditional air inlet valve plate are both flat, so when the compressor sucks air, the refrigerant pushes open the air inlet valve plate in a direction perpendicular to the air inlet valve plate. On the one hand, it will cause a large amount of flow resistance, resulting in a decrease in suction speed and a decrease in refrigerating capacity of the compressor; on the other hand, it will cause the air inlet valve plate to vibrate, produce pneumatic noise and cause wear of parts, reducing the service life of the compressor.

[0045] In order to solve the above problems, the air inlet valve plate of an embodiment of the utility model can guide the refrigerant flow, reduce the flow resistance, improve the refrigerating capacity of the compressor, and reduce the impact of the refrigerant flow to a certain extent, thereby reducing the vibration. The compressor of the embodiment of the utility model is introduced below with reference to the drawings.

[0046] Referring toFigure 1 and Figure 2 As shown in FIGS. 1 and 2, the cylinder head 200 and the end face of the cylinder are sequentially arranged with the cylinder head gasket 300, the valve plate 400, the suction valve plate 100 and the valve plate gasket 500 in the air intake direction. The cylinder head gasket 300, the valve plate 400, the suction valve plate 100 and the valve plate gasket 500 are also called valve group. The suction valve plate 100 of the embodiment of the utility model is installed between the cylinder head 200 and the cylinder. The suction valve plate 100 comprises a valve tongue 110 and a flow guide part 120. The valve tongue 110 is provided with a first wall surface 111. The first wall surface 111 is located at one end of the cylinder cavity away from the cylinder, that is, at one end facing the valve plate 400. The flow guide part 120 is arranged on the first wall surface 111. The flow guide part 120 protrudes from the first wall surface 111. The flow guide part 120 can be connected to the valve tongue 110 by means of bonding or by means of integral manufacturing with the valve tongue 110.

[0047] Referring to Figure 3 and Figure 4 As shown in FIGS. 1 and 2, in the direction perpendicular to the suction valve plate 100, the outer diameter of the flow guide part 120 gradually narrows in the direction away from the cylinder cavity, that is, the outer diameter of one end of the flow guide part 120 facing the valve plate 400 is smaller than the outer diameter of one end of the flow guide part 120 connected to the valve tongue 110. It should be noted that the outer diameter of the flow guide part 120 should be understood as the maximum outer diameter of the flow guide part 120. For example, when the outer contour line of the cross section of the flow guide part 120 is circular, the outer diameter is the diameter of the circle. When the outer contour line of the cross section of the flow guide part 120 is polygonal, the outer diameter is the diameter of the maximum circumscribed circle of the polygon. When the outer contour line of the cross section of the flow guide part 120 is elliptical, the outer diameter is the size of the major axis of the ellipse.

[0048] When the refrigerant gas flow pushes open the suction valve plate 100, under the flow guide of the side surface of the flow guide part 120, the refrigerant gas flow spreads from the center of the flow guide part 120 to the periphery of the flow guide part 120, reduces the flow resistance, accelerates the air intake speed, improves the air intake efficiency of the compressor, and because more refrigerant flows into the cylinder cavity in the same time, the refrigerant capacity of the compressor is also improved. Moreover, the refrigerant gas flow spreads to the periphery under the action of the flow guide part 120, which can reduce the impact on the suction valve plate 100, play a buffering role, reduce the vibration of the suction valve plate 100 to a certain extent, suppress the aerodynamic noise, and improve the service life of the compressor.

[0049] Referring to Figure 2 and Figure 3As shown, the valve tongue 110 comprises an arm portion 112 and a tongue portion 113, one end of the arm portion 112 is connected to the tongue portion 113, and the other end of the arm portion 112 is connected to the body of the suction valve plate 100. The arm portion 112 is the fixed end of the valve tongue 110, and the tongue portion 113 is the free end. Under the elastic deformation of the arm portion 112, the tongue portion 113 can realize the opening of the suction valve plate 100 or the closing of the suction valve plate 100. The valve plate 400 is provided with a suction hole 410, and the tongue portion 113 is arranged opposite to the suction hole 410. Therefore, the refrigerant gas flow entering from the suction hole 410 mainly acts on the tongue portion 113, and the flow guide portion 120 is arranged on the tongue portion 113. Therefore, the refrigerant gas flow can be more effectively guided, so that the refrigerant gas flow can be smoothly guided to the edge of the tongue portion 113, and then enter the cylinder cavity of the cylinder. The flow guide portion 120 is located at the center position of the tongue portion 113, so that the force of the valve tongue 110 is more uniform, and the impact of the refrigerant gas flow on the suction valve plate 100 is further reduced.

[0050] The arm portion 112 comprises a narrowed section 1121, the width of the narrowed section 1121 is smaller than the maximum width of the tongue portion 113, and is also smaller than the width of the fixed end of the arm portion 112. The provision of the narrowed section 1121 in the embodiment facilitates the elastic deformation of the arm portion 112, so that the resistance of the opening or closing of the suction valve plate 100 is within a suitable range.

[0051] Referring to Figure 2 , Figure 3 and Figure 4 , the flow guide portion 120 of one embodiment of the utility model can be constructed as a circular truncated cone, a conical truncated cone or an elliptical truncated cone. In the direction perpendicular to the suction valve plate 100 (i.e. the direction of the arrow A in the figure), the flow guide portion 120 is arranged to be gradually reduced from the center of the tongue portion 113 to the edge of the tongue portion 113. Figure 4(In the vertical direction), the guide portion 120 includes a first bottom surface 121 and a second bottom surface 122. The end of the guide portion 120 connected to the valve tongue 110 is the first bottom surface 121, and the end of the guide portion 120 away from the valve tongue 110 is the second bottom surface 122. The maximum diameter of the first bottom surface 121 is D1, the maximum diameter of the second bottom surface 122 is D2, and the maximum outer diameter of the tongue 113 is D3, satisfying: 0.6≤D1 / D3≤0.85, 0<D2 / D1≤0.6. The values ​​of the parameters D1 / D3 can be 0.6, 0.65, 0.7, 0.8, 0.85, etc. The values ​​of the parameters D2 / D1 can be 0.1, 0.2, 0.4, 0.5, 0.6, etc. When D1 / D3 is less than 0.6, the guiding area of ​​the guide section 120 is too small, resulting in poor guiding effect. When D1 / D3 is greater than 0.85, the outer diameter of the guide section 120 is too large, which increases the rigidity of the suction valve plate 100, leading to a significant increase in the compressor's input force and potentially worsening the sealing performance of the suction valve plate 100. When D2 / D1 is greater than 0.6, the guiding area of ​​the guide section 120 is too small, resulting in poor guiding effect. It cannot reduce flow resistance, accelerate suction speed, or increase the compressor's cooling capacity. It also cannot reduce the impact on the suction valve plate 100, thus failing to provide a buffering effect and reduce vibration and aerodynamic noise to some extent.

[0052] It should be noted that when the guide portion 120 is frustoconical, the maximum diameter of the first bottom surface 121 and the second bottom surface 122 should be understood as the diameter of the circumcircle of the corresponding bottom surface; when the guide portion 120 is elliptical frustoconical, the maximum diameter of the first bottom surface 121 and the second bottom surface 122 should be understood as the dimension of the major axis of the corresponding bottom surface. The maximum outer diameter of the tongue 113 is the diameter of the partially arc-shaped outer periphery of the tongue 113.

[0053] Reference Figure 1 As shown, the valve plate 400 is provided with an air intake hole 410. On the projection plane projected along a direction perpendicular to the air intake valve plate 100, the projection of the flow guide 120 is located within the projection of the air intake hole 410. It can be understood that the projection of the air intake hole 410 is the outer contour line of the air intake hole 410, and the flow guide 120 being located within the outer contour line can better achieve the function of guiding the intake refrigerant gas.

[0054] Based on simulation calculations, limiting D1 and D2 within this range can achieve better flow guiding effect: 5mm≤D1≤7mm; 2mm≤D2≤4mm. If the values ​​of D1 and D2 are too small, the flow guiding effect will be poor; if the values ​​are too large, they will block the air intake hole 410 of the valve plate 400, causing the opening and closing action of the air intake valve plate 100 to be obstructed.

[0055] Reference Figure 4 As shown, in the direction perpendicular to the intake valve plate 100 (i.e. Figure 4The height of the flow guide part 120 is T1 (in the up-down direction in the drawing), and satisfies: 0.2mm≤T1≤1mm. The value of T1 can be 0.2mm, 0.3mm, 0.5mm, 0.7mm, 1mm, etc. When T1 is less than 0.2mm, the flow guide area of the flow guide part 120 is too small, and the flow guide effect is poor; when T1 is greater than 1mm, the height of the flow guide part 120 is too large, and may interfere with other parts of the valve group, affecting the smoothness of the opening or closing of the suction valve plate 100.

[0056] The height of the flow guide part 120 in the embodiment of the utility model is less than the thickness of the valve plate 400, which on the one hand avoids interference between the flow guide part 120 and the valve plate 400 and the valve plate gasket 500 during the opening and closing of the valve tongue 110, and on the other hand avoids that the flow guide part 120 is too heavy, which leads to a significant increase in compressor input and a decrease in compressor efficiency.

[0057] The performance of the compressor BASE style in the related art and the compressor styles 1 and 2 using the flow guide part 120 of the embodiment of the utility model are compared below with reference to Table 1.

[0058] Table 1: Simulation comparison of BASE style and two styles of the embodiment of the utility model.

[0059]

[0060] It is found from the performance comparison of the styles of the embodiment and the BASE style in Table 1 that the cooling capacity of the styles 1 and 2 of the embodiment is improved compared with the BASE style in the related art, and the compressor efficiency COP of the styles 1 and 2 of the embodiment is equivalent to the compressor efficiency COP of the BASE style in the related art. Among them, the cooling capacity of the style 2 of the embodiment is improved by 2.2W, and the cooling capacity of the style 1 of the embodiment is improved by 1.08W, which indicates that the gentler the slope of the side surface of the guide part is, the stronger the guiding effect is, and the higher the suction efficiency is. In addition, although the input of the styles 1 and 2 of the embodiment is also improved compared with the BASE style, the data in the table is the simulation result of the guide part being made of steel material, and if the guide part is changed to plastic or rubber material, the input can be further reduced and the compressor efficiency COP can be improved.

[0061] Figure 5 Figures (a) and (b) show the schematic diagrams of the refrigerant airflow acting on the valve tongue 110 in the BASE style in the related art and the style of the embodiment of the utility model, wherein (a) is the BASE style in the related art, and (b) is the style of the embodiment of the utility model, which actually reflects the flow direction of the refrigerant airflow after blowing to the suction valve plate 100. Figure 6 Figures (a) and (b) show the velocity vector cloud diagrams of the neck pipe port section of the muffler in the BASE style in the related art and the style of the embodiment of the utility model.

[0062] In combination withFigure 5 And Figure 6 It can be understood that the BASE style has a large amount of high-speed refrigerant gas flow vertically impacting the suction valve plate 100; and in the style of the embodiment of the utility model, the speed vector of the refrigerant gas flow is imparted by the guide portion to move to all directions, which can show that the suction valve plate 100 of the embodiment of the utility model plays a certain flow guiding effect on the refrigerant gas flow.

[0063] Figure 7 A comparison diagram of the lift of the suction valve plate 100 style of an embodiment of the utility model and the BASE style in the related art is shown, which shows the process of three suction of the suction valve plate 100. Referring to Figure 7 It can be seen that the opening amplitude of the suction valve plate 100 style of the embodiment of the utility model at the end of suction is obviously smaller than the BASE style, which shows that the suction valve plate 100 of the embodiment of the utility model can effectively suppress the vibration of the suction valve plate 100, reduce the backflow generated when the compressor sucks, and has the effect of suppressing the aerodynamic noise, improving the mute performance of the compressor.

[0064] The guide portion 120 of another embodiment of the utility model can be constructed as a cone, an elliptical cone or a pyramid. The specific principle can be understood with reference to the previous embodiment, and will not be repeated here.

[0065] Referring to Figure 2 The material of the guide portion 120 can be plastic, rubber and other non-metals, at which time the guide portion 120 is fixed to the valve tongue 110 by adhesive. As an alternative, the material of the guide portion 120 can also be metal, at which time the guide portion 120 can be fixed to the valve tongue 110 by metal adhesive, and the guide portion 120 and the valve tongue 110 can be constructed as an integral molded part by integral casting and the like.

[0066] The guide portion 120 can be a solid structure, which is better to manufacture, but the weight is relatively large. As an alternative, the guide portion 120 can also be a hollow structure, which can reduce the weight of the guide portion 120 and reduce the input.

[0067] Referring to Figure 2As shown in the drawings, the air suction valve piece 100 of the embodiment of the utility model includes a center part 130 and a limiting part 140, the center part 130 is equipped with a through hole 131 matched with the valve tongue 110, the center part 130 is also equipped with an exhaust hole 132, the exhaust hole 132 is communicated with the through hole 131. One end of the valve tongue 110 is fixed to the partial hole wall of the through hole 131; the limiting part 140 is arranged around the center part 130, and the limiting part 140 is used for fixing the air suction valve piece 100. In the embodiment, the limiting part 140 is equipped with a limiting hole 141 matched with a screw, the cylinder cover 200, the cylinder cover gasket 300, the valve plate 400, the air suction valve piece 100 and the valve plate gasket 500 are fixed to the end of the cylinder through the screw.

[0068] Referring to Figure 8 As shown in the drawings, the air suction valve piece 100 of the embodiment of the utility model includes a center part 130 and a limiting part 140, the center part 130 is equipped with a through hole 131 matched with the valve tongue 110, the center part 130 is also equipped with an exhaust hole 132, the exhaust hole 132 is communicated with the through hole 131. One end of the valve tongue 110 is fixed to the partial hole wall of the through hole 131; the limiting part 140 is arranged around the center part 130, and the limiting part 140 is used for fixing the air suction valve piece 100. In the embodiment, the limiting part 140 is equipped with a limiting hole 141 matched with a screw, the cylinder cover 200, the cylinder cover gasket 300, the valve plate 400, the air suction valve piece 100 and the valve plate gasket 500 are fixed to the end of the cylinder through the screw.

[0069] It can be understood that, in the air suction valve piece 100 of the embodiment of the utility model, the valve tongue 110 can be integrally formed with the center part 130 and the limiting part 140, that is, the air suction valve piece 100 is an integrally formed piece. Alternatively, the valve tongue 110 can be fixedly connected to the center part 130 by riveting, welding or the like, which is not limited in detail.

[0070] The compression assembly of the embodiment of the utility model, including cylinder, cylinder cover 200, valve group and piston 600, valve group installs between cylinder and cylinder cover 200, valve group includes the suction valve piece 100 of the above embodiment of the utility model, and the suction valve piece 100 is located at one end of cylinder cavity, and the piston 600 is located in the cylinder cavity, and the piston 600 can move in the direction away from the suction valve piece 100 to make the refrigerant be sucked into the cylinder cavity through the valve tongue 110 of the suction valve piece 100.When the piston 600 moves and drives the refrigerant gas flow to be sucked into the cylinder cavity, the valve tongue 110 of the suction valve piece 100 is pushed open, and under the side flow guiding of the flow guiding portion 120, the refrigerant gas flow diffuses to the four around of the flow guiding portion 120, reduces the flow resistance, speeds up the suction speed, improves the suction efficiency of the compressor and because more refrigerant flows into the cylinder cavity in the same time, therefore also improves the refrigerating capacity of the compressor; and the refrigerant gas flow diffuses to the four around under the action of the flow guiding portion 120 can reduce the impact on the suction valve piece 100, plays the buffering effect, reduces the tremor of the suction valve piece 100 to a certain extent, suppresses the pneumatic noise, improves the service life of the compressor.

[0071] Referring to Figure 9 And Figure 10 As shown in the figure, the suction valve piece 100 of another embodiment of the utility model, the valve tongue 110 is provided with the second wall surface 114 away from the first wall surface 111, and the second wall surface 114 faces one end of the cylinder cavity. The flow guiding portion 120 and the valve tongue 110 are integrally formed, and the flow guiding portion 120 forms a concave cavity 1141 on the second wall surface 114. It can be understood that the flow guiding portion 120 can be formed by stamping the side of the valve tongue 110 towards the valve plate 400.

[0072] The one end of the piston 600 towards the suction valve piece 100 is provided with a convex portion 610, and the convex portion 610 is configured to be able to fill the concave cavity 1141 when the piston 600 moves to the exhaust limit. It should be noted that the position of the exhaust limit is the position of the piston 600 moving to complete the exhaust. The concave cavity 1141 can be filled by the convex portion 610 should be understood that the convex portion 610 and the concave cavity 1141 are matched, and the convex portion 610 is completely filled in the concave cavity 1141, so as to ensure that the piston 600 exhausts completely, and the working efficiency of the compressor is ensured.

[0073] The compressor of the embodiment of the utility model, including shell, and the compression assembly, motor assembly and crankshaft installed in the shell. The crankshaft includes an eccentric portion, and the eccentric portion is connected to the piston 600 through a connecting rod. The motor is used to drive the rotation of the crankshaft, and the rotary motion of the crankshaft is converted into the reciprocating motion of the piston 600 along the axis direction of the cylinder cavity through the connecting rod, and the reciprocating motion of the piston 600 realizes the suction, compression and exhaust of the compressor.

[0074] The compression assembly of this embodiment includes an intake valve plate 100. The intake valve plate 100 has a guide portion 120 provided on a first wall surface 111 at the end of the valve tongue 110 away from the cylinder cavity. The guide portion 120 protrudes from the first wall surface 111 and its outer diameter gradually narrows away from the cylinder cavity in a direction perpendicular to the intake valve plate 100. When the piston 600 moves to drive the refrigerant airflow into the cylinder cavity, the valve tongue 110 of the intake valve plate 100 is pushed open. Under the side guidance of the guide portion 120, the refrigerant airflow diffuses around the guide portion 120, reducing flow resistance, accelerating the intake speed, and improving the intake efficiency of the compressor. Furthermore, since more refrigerant flows into the cylinder cavity in the same amount of time, the cooling capacity of the compressor is also increased. Moreover, the diffusion of the refrigerant airflow around the guide portion 120 reduces the impact on the intake valve plate 100, plays a buffering role, reduces the vibration of the intake valve plate 100 to a certain extent, suppresses aerodynamic noise, and improves the service life of the compressor.

[0075] The compressor of this utility model embodiment adopts all the technical solutions of the suction valve plate 100 of the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0076] The refrigeration equipment of this utility model embodiment includes the compressor of the above embodiments. The refrigeration equipment can be a refrigerator, freezer, or water dispenser, etc., and is not specifically limited here. Taking a refrigerator as an example, the compressor is generally installed in the compressor compartment, and the compressor provides cooling capacity to the freezer compartment, refrigerator compartment, and other compartments of the refrigerator.

[0077] The refrigeration equipment of this utility model uses the compressor of the above embodiment. The compressor includes a compression assembly with a suction valve plate 100. The suction valve plate 100 has a guide portion 120 provided on a first wall surface 111 at the end of the valve tongue 110 away from the cylinder cavity. The guide portion 120 protrudes from the first wall surface 111 and its outer diameter gradually narrows away from the cylinder cavity in the direction perpendicular to the suction valve plate 100. When the piston 600 moves to drive the refrigerant airflow into the cylinder cavity, the valve tongue 110 of the suction valve plate 100 is opened. Under the side guidance of the guide section 120, the refrigerant airflow diffuses around the guide section 120, reducing flow resistance, accelerating the suction speed, and improving the suction efficiency of the compressor. Furthermore, since more refrigerant flows into the cylinder cavity in the same amount of time, the cooling capacity of the compressor is also increased. Moreover, the diffusion of the refrigerant airflow around the guide section 120 reduces the impact on the suction valve plate 100, playing a buffering role. To a certain extent, this reduces the vibration of the suction valve plate 100, suppresses aerodynamic noise, and improves the service life of the compressor, thereby improving the quietness performance of the refrigeration equipment and reducing the failure rate of the refrigeration equipment.

[0078] The refrigeration equipment of the embodiment of the utility model has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments of the compressor, and thus at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0079] The above has made a detailed description of the embodiments of the utility model in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. An air suction valve plate applied to a compressor having a cylinder, characterized by, The application relates to a suction valve plate for a compressor. The suction valve plate comprises a center part provided with a through hole; a limiting part arranged around the center part, the limiting part being used for fixing the suction valve plate; a valve tongue connected to the center part and located in the through hole, the valve tongue being provided with a first wall surface facing away from one end of a cylinder cavity of a cylinder; and a flow guide part connected to the first wall surface, the flow guide part being configured to protrude from the first wall surface, and the outer diameter of the flow guide part gradually narrows in a direction away from the cylinder cavity. The valve tongue comprises an arm part and a tongue part, the arm part being used for fixing the valve tongue, and the tongue part being a free end, and the flow guide part is arranged on the tongue part. The flow guide part is in the shape of a circular truncated cone, a conical truncated cone or an elliptical truncated cone, and in a direction perpendicular to the suction valve plate, one end of the flow guide part connected to the valve tongue is a first bottom surface, the other end of the flow guide part away from the valve tongue is a second bottom surface, the maximum diameter of the first bottom surface is D1, the maximum diameter of the second bottom surface is D2, and the maximum outer diameter of the tongue part is D3, and the following conditions are met: 0.6<=D1 / D3<=0.85 and 0<D2 / D1<=0.

6. The flow guide part is in the shape of a circular cone, an elliptical cone or a pyramid.

2. The air suction valve piece according to claim 1, characterized in that: In a direction perpendicular to the suction valve plate, the height of the flow guide part is T1, and the following condition is met: 0.2mm<=T1<=1mm.

3. The suction valve blade of claim 2, wherein: The material of the flow guide part is plastic, rubber or metal, and the flow guide part is fixed to the valve tongue by glue; or the flow guide part and the valve tongue are an integral part.

4. The suction valve blade of claim 1, wherein: The suction valve plate is an integral part, and one end of the valve tongue is fixedly connected to a part of a hole wall of the through hole.

5. The suction valve plate of any one of claims 1 to 3, wherein: The application relates to a compressor.

6. The suction valve blade according to claim 1 or 2, characterized in that: The compressor comprises a shell, a compression assembly installed in the shell, a crankshaft and a motor assembly installed in the shell.

7. The air suction valve blade according to claim 1, characterized in that: The valve tongue is provided with a second wall surface facing the cylinder cavity, the flow guide part and the valve tongue are an integral part, the flow guide part forms a concave cavity on the second wall surface, one end of the piston facing the suction valve plate is provided with a convex part, and the convex part is configured to fill the concave cavity when the piston moves to an exhaust limiting position.

8. Compressor, characterized in that The compression assembly further comprises a valve plate connected to the suction valve plate, the valve plate is provided with a suction hole, and in a projection plane perpendicular to the suction valve plate, the projection of the flow guide part is located in the projection of the suction hole. The application further relates to a compressor comprising the suction valve plate. ​ ​ 9. The compressor of claim 8, wherein: ​ 10. The compressor of claim 8, wherein: ​ 11. A refrigeration appliance characterised in that, ​

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