Valve plate with injection molding type valve seat

Abstract

The valve plate with the injection molding type valve seat comprises a base body valve plate, an air suction valve port and an exhaust valve port are formed in the base body valve plate, and the air suction valve seat and the exhaust valve seat are injection molding parts and are correspondingly embedded in the air suction valve port and the exhaust valve port respectively. An air suction injection flow inlet and an exhaust injection flow inlet are formed in the two side edges of the base body valve plate respectively, inserting handles are arranged at one ends of the air suction valve seat and the exhaust valve seat, and the ends of the inserting handles are arranged at the air suction injection flow inlet and the exhaust injection flow inlet respectively. According to the other implementation mode, only the air suction valve seat is an injection molding part, the exhaust valve seat is a part of the base body valve plate, and the problem that the valve plate is prone to being broken when the valve plate claps the exhaust hole and the air suction hole is solved. The injection molding process is adopted, the process is simple, materials are saved, cost is reduced, and mass production and use are facilitated.

Description

Technical Field

[0001] This utility model patent relates to the field of compressor technology, and in particular to a valve plate with an injection-molded valve seat. Background Technology

[0002] Currently, most household refrigerator compressor valve plates are made of metal. The valve plate that controls the opening and closing of the valve plate's air holes cycles at a certain frequency under the reciprocating action of the piston. This causes the valve plate to strike the valve plate's valve opening at a certain frequency. Since the compressor continuously draws in and discharges air during operation, the valve plate repeatedly strikes the valve seat on the valve plate. Furthermore, the impact of the valve plate striking the metal valve plate is a rigid collision, which can lead to the valve plate breaking after prolonged compressor operation.

[0003] Chinese Patent Publication No. CN209654194U, published on November 10, 2019, entitled "A Valve Plate for a Refrigeration Compressor," discloses a valve plate for a refrigeration compressor. The valve plate body includes a valve plate body with an intake valve seat and an exhaust valve seat. The intake and exhaust valve seats each have an intake port and an exhaust port, respectively. The surfaces of the intake and exhaust valve seats that contact the intake and exhaust valve plates are coated with an engineering plastic coating. The material of the engineering plastic coating can be polyetheretherketone (PEEK) or a modified version thereof. Although this patent includes an engineering plastic coating, the intake and exhaust valve seats are still not made of metal. When the engineering plastic coating is worn away due to long-term use, the valve plates still do not make rigid metal-to-metal contact when they strike the valve plate, leading to the valve plates breaking. Utility Model Content

[0004] This utility model provides a valve plate with an injection-molded valve seat. By using injection molding to manufacture the exhaust valve seat and the intake valve seat, the valve plate is prevented from breaking, which simplifies the manufacturing process, reduces costs, and decreases noise.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a valve plate with an injection-molded valve seat, comprising a base valve plate, on which an intake valve port and an exhaust valve port are provided, with the intake valve seat and exhaust valve seat respectively embedded in the intake valve port and exhaust valve port; the exhaust valve port is connected to the exhaust injection molding channel on the base valve plate, and the intake valve port is connected to the intake injection molding channel on the base valve plate; the exhaust injection molding channel and the intake injection molding channel extend to the outside of the side of the base valve plate for the flow of injection molding material forming the exhaust valve seat and the intake valve seat. The base valve plate has intake injection molding inlets and exhaust injection molding inlets on both sides, and each end of the intake valve seat and the exhaust valve seat has a handle, the end of which is respectively located at the intake injection molding inlet and the exhaust injection molding inlet. This improves the problem of the valve plate easily breaking when struck against the exhaust and intake ports; the injection molding process is simple, saves materials, reduces costs, and is suitable for mass production and use.

[0006] Preferably, the venting and suction injection channels guide the heated injection material into the venting and suction valve ports, respectively. The injection material is preferably a wear-resistant material, and it can be continuously optimized and updated to improve product reliability. After flowing into the spaces of the venting and suction valve ports within the base metal valve plate, it cools and forms the shapes of the venting and suction valve seats. This design ensures smoother and more uniform flow of the injection material into the venting and suction valve ports, avoiding problems such as porosity or incomplete filling caused by poor material flow, thereby improving the molding quality of the valve seats and further enhancing product reliability and service life. Using wear-resistant materials can significantly extend the service life of the valve seats and reduce wear caused by long-term use. Simultaneously, continuous optimization and updating of the injection material can further improve product performance and reliability based on actual usage needs and environmental conditions.

[0007] Preferably, the exhaust valve seat has an exhaust port, and the suction valve seat has a suction port. The exhaust valve seat is used to cooperate with the exhaust valve plate, and the suction valve seat is used to cooperate with the suction valve plate. This design allows the exhaust valve seat and suction valve seat to perfectly cooperate with their corresponding valve plates, ensuring smoother gas flow within the compressor and improving the compressor's efficiency and performance.

[0008] Preferably, the base valve plate is made of metal, while the exhaust valve seat and intake valve seat are made of plastic. This ensures the strength and deformation resistance of the base valve plate while mitigating the problem of the valve plate easily breaking when it strikes the exhaust and intake valve seats. Compared to metal, plastic can act as a damper, protecting the valve plate during impact. Furthermore, using this valve seat combination type valve plate significantly reduces the use of plastic materials compared to an embedded combination valve plate (plastic is more expensive than metal), thus reducing the production cost of the valve plate.

[0009] Preferably, the end of the venting injection channel is the venting injection inlet, and the end of the suction injection channel is the suction injection inlet. Both the venting and suction injection channels are rectangular and are located on the upper surface of the base valve plate. Positioning the inlets of the injection channels on the side of the base valve plate allows for easier flow of the injection material into the valve port, simplifying the injection molding process and improving production efficiency. The rectangular channel design helps to distribute the injection material more evenly, reducing material resistance within the channel, ensuring the stability and consistency of the injection molding process, and further improving the molding quality of the valve seat.

[0010] Preferably, the venting injection inlet and the suction injection inlet are respectively located on both sides of the base valve plate, with the two sides being opposite sides of the base valve plate. The suction injection channel is perpendicular to the side of the base valve plate, and the venting injection channel is inclined to the side of the base valve plate. This layout allows the injection material to flow into the valve port from both sides simultaneously, further improving the efficiency and uniformity of injection molding and reducing molding defects caused by uneven material flow.

[0011] Preferably, the upper and lower surfaces of the exhaust valve seat and intake valve seat are flush with the upper and lower surfaces of the base valve plate. The injection port of the base metal valve plate is located on the surface that contacts the intake valve plate. The selection of the injection port location is mainly to minimize the adverse effects on the valve assembly's sealing performance caused by possible unevenness of the injection surface. The shape of the upper surface of the intake valve seat must match the shape of the intake valve plate's tongue, and the shape of the lower surface of the intake valve seat must match the shape of the cylinder head. This matching design ensures a tight fit between the intake valve seat, the intake valve plate, and the cylinder head, improving sealing performance, reducing gas leakage, and extending the service life of the valve plate and valve seat. The flush surface design ensures a tight fit between the valve seat and the base valve plate, improving overall structural stability and sealing performance, and reducing the risk of gas leakage. Placing the injection port on the surface that contacts the intake valve plate reduces sealing problems caused by unevenness of the injection surface, improves the sealing performance of the valve assembly, and ensures the high efficiency of the compressor.

[0012] A valve plate with an injection-molded valve seat includes a base valve plate with an intake valve port and an intake valve seat embedded therein. The intake valve port and an intake injection channel on the base valve plate are connected, and an exhaust valve seat is part of the base valve plate. The intake injection channel extends to the side of the base valve plate for the flow of injection molding material forming the intake valve seat. The intake valve seat is an injection-molded part embedded in the intake valve port, and the exhaust valve seat is part of the base valve plate. An intake injection inlet is provided on one side of the base valve plate, and a handle is provided at one end of the intake valve seat, with the end of the handle positioned at the intake injection inlet.

[0013] Preferably, the suction injection channel is used to guide the heated injection material into the suction valve port. This design ensures that the injection material flows accurately into the suction valve port, forming a high-quality suction valve seat and improving the overall performance and reliability of the product.

[0014] Preferably, the base valve plate and exhaust valve seat are made of metal, while the intake valve seat is made of plastic. The metal base valve plate and exhaust valve seat ensure the strength and deformation resistance of the entire valve plate, while the plastic valve seat can effectively reduce the impact force generated when the valve plate strikes, protect the valve plate, reduce noise, and lower production costs.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a valve plate with an injection-molded valve seat. By using injection molding to manufacture the exhaust valve seat and the intake valve seat, the problem of the valve plate easily breaking when it is struck on the exhaust port and the intake port is improved. The injection molding process is simple, saves materials, reduces costs, and is suitable for mass production and use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the base valve plate structure of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the intake valve seat and exhaust valve seat of Embodiment 1 of this utility model.

[0018] Figure 3 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0019] Figure 4 This is a schematic diagram of the base metal valve plate structure in Embodiment 2 of this utility model.

[0020] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0021] Figure reference numerals: 1. Base valve plate, 1.1. Intake valve port, 1.2. Intake injection inlet, 1.3. Exhaust injection inlet, 1.4. Exhaust injection channel, 1.5. Intake injection channel, 1.6. Intake valve seat, 2. Exhaust valve seat. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Most household refrigerator compressors are reciprocating piston compressors. During operation, the compressor draws in gas from the suction pipe, which then enters the muffler. The gas then passes through the valve assembly into the cylinder. The gas in the cylinder is compressed by the reciprocating piston motion and exits through the valve assembly, exiting the cylinder and being discharged through the compressor's exhaust port. In this suction and exhaust process, the valve plate plays a crucial role: it opens the suction port and closes the exhaust port during suction, and opens the exhaust port and closes the suction port during exhaust. Both the suction and exhaust ports are located on the valve seat of the valve assembly, and their opening and closing are controlled by a valve plate mounted on the valve plate. When open, the valve plate rises; when closed, it strikes the valve seat, covering the port. In the design and manufacturing of compressors, the valve plate, as a key component, has a significant impact on the compressor's performance, reliability, and cost. Currently, most household refrigerator compressor valve plates are metal. The valve plate, which controls the opening and closing of the valve plate's ports, cycles open and close at a certain frequency under the action of the reciprocating piston. This causes the valve plate to strike the valve plate's port at a certain frequency. As the compressor continuously draws in and discharges air during operation, the valve plate repeatedly strikes the valve seat on the valve plate. Since the impact of the valve plate striking the metal valve plate is a rigid collision, the valve plate may break after prolonged operation, thus reducing the compressor's lifespan.

[0024] Example 1.

[0025] like Figure 1 and Figure 2 As shown, the valve seat assembly valve plate for compressors of this utility model mainly includes a base valve plate 1, which is the basic supporting part of the entire valve plate structure. On the base valve plate 1, a suction valve port 1.1 and a discharge valve port 1.2 are carefully arranged. These two valve ports respectively perform the important functions of drawing in and discharging gas, and are key channels for gas flow within the compressor. A suction valve seat 2 and a discharge valve seat 3 are respectively embedded in the suction valve port 1.1 and the discharge valve port 1.2, and they cooperate with the corresponding valve plates to precisely control the gas flow. The discharge valve port 1.2 is connected to the discharge injection molding channel 1.5 on the base valve plate 1, and the suction valve port 1.1 is connected to the suction injection molding channel 1.6 on the base valve plate 1. These two injection molding channels extend to the outside of the side of the base valve plate 1, and their main function is to guide the heated injection molding material into the discharge valve port 1.2 and the suction valve port 1.1 respectively. This design allows the injection molding process to proceed smoothly, precisely delivering the injection material to the location where the valve seat needs to be molded through the flow channel.

[0026] like Figure 1 and Figure 3As shown, the venting injection channel 1.5 and the suction injection channel 1.6 are rectangular channels located on the upper surface of the base valve plate 1. Positioning the injection channels on the upper surface of the base valve plate 1 facilitates the flow and handling of the injection material. The rectangular channel design offers several advantages: it helps to distribute the injection material more evenly, reduces material resistance within the channel, and ensures the stability and consistency of the injection molding process. This avoids problems such as porosity or incomplete filling caused by poor material flow, thereby improving the molding quality of the valve seat and further enhancing product reliability and service life.

[0027] like Figure 1 As shown, the venting injection channel 1.5 has a venting injection inlet 1.4 at its end, and the suction injection channel 1.6 has a suction injection inlet 1.3 at its end. The venting injection inlet 1.4 and suction injection inlet 1.3 are respectively located on opposite sides of the base valve plate 1. The suction injection channel 1.6 is perpendicular to the side of the base valve plate 1, while the venting injection channel 1.5 is inclined to the side of the base valve plate 1. This layout allows the injection material to flow into the valve port simultaneously from both sides, further improving injection efficiency and uniformity, and reducing molding defects caused by uneven material flow. In actual injection molding, simultaneous injection from both sides allows the material to fill the valve port space more quickly and more uniformly during filling, thus ensuring the quality of the valve seat.

[0028] like Figure 2 and Figure 3 As shown, the exhaust valve seat 3 has an exhaust port, and the intake valve seat 2 has an intake port. The exhaust valve seat 3 is used to cooperate with the exhaust valve plate, and the intake valve seat 2 is used to cooperate with the intake valve plate. This design allows the exhaust valve seat 3 and the intake valve seat 2 to perfectly cooperate with their corresponding valve plates, ensuring smoother gas flow within the compressor. When the compressor is working, the intake valve plate opens, and gas enters the compressor through the intake port; when the exhaust valve plate opens, gas exits the compressor through the exhaust port. This precise cooperation ensures orderly gas entry and exit, improving the compressor's efficiency and performance.

[0029] The base valve plate 1 is made of metal, while the exhaust valve seat 3 and intake valve seat 2 are made of plastic. The metal base valve plate 1 ensures the strength and deformation resistance of the entire valve plate, enabling it to withstand the pressure and vibration generated during compressor operation. The plastic valve seats offer a unique advantage: compared to metal, plastic acts as a damper. When the valve plates strike the exhaust valve seat 3 and intake valve seat 2, the plastic valve seats absorb some of the impact force, protecting the valve plates and mitigating the problem of them easily breaking during impact. Furthermore, using this combined valve plate design significantly reduces the use of plastic materials compared to embedded combined valve plates (plastic is more expensive than metal), thereby reducing the production cost of the valve plate. This material selection ensures both valve plate performance and effective cost control.

[0030] like Figure 3 As shown, the upper and lower surfaces of the exhaust valve seat 3 and the intake valve seat 2 are flush with the upper and lower surfaces of the base valve plate 1. This flush surface design ensures a tight fit between the valve seat and the base valve plate 1, improving overall structural stability and sealing performance, and reducing the risk of gas leakage. The injection port of the base metal valve plate is located on the surface that contacts the intake valve plate. The selection of the injection port location is mainly to minimize the adverse effects on the valve assembly's sealing performance caused by potential unevenness of the injection surface. If the injection surface is uneven, gaps may appear in the valve assembly during sealing, thus affecting the gas sealing and compressor performance. Placing the injection port on the surface that contacts the intake valve plate allows for better control of the injection surface flatness, improves the valve assembly's sealing performance, and ensures efficient compressor operation.

[0031] like Figure 2 As shown and Figure 3 As shown, the shape of the upper surface of the intake valve seat 2 must match the shape of the intake valve plate's tongue spring, and the shape of the lower surface of the intake valve seat 2 must match the shape of the cylinder head. This matching design ensures a tight fit between the intake valve seat 2, the intake valve plate, and the cylinder head, improving sealing performance and reducing gas leakage. When the intake valve plate is working, the perfect match with the upper surface of the intake valve seat 2 ensures unidirectional gas flow and prevents backflow; the matching between the lower surface of the intake valve seat 2 and the cylinder head ensures the sealing of the entire intake system and improves compressor efficiency. Simultaneously, this matching design also extends the service life of the valve plate and valve seat, reducing damage caused by friction and impact.

[0032] Injection Molding Process: The venting injection channel 1.5 and the suction injection channel 1.6 guide the heated injection material into the venting valve port 1.2 and the suction valve port 1.1, respectively. After flowing into the spaces of the venting valve port 1.2 and the suction valve port 1.1 in the base metal valve plate, the material cools and forms the shapes of the venting valve seat 3 and the suction valve seat 2. During the injection molding process, the injection material is first heated to a suitable temperature to give it good fluidity. Then, the heated material is injected into the venting injection channel 1.5 and the suction injection channel 1.6 through the injection molding equipment. The material flows smoothly along the channels into the venting valve port 1.2 and the suction valve port 1.1. Within the valve space, the material gradually cools and solidifies, ultimately forming the desired shapes of the venting valve seat 3 and the suction valve seat 2. This injection molding process is simple and easy to implement, saves materials, reduces costs, and is suitable for mass production and use.

[0033] The preferred injection molding material is wear-resistant. Using wear-resistant materials can significantly extend the service life of the valve seat and reduce wear problems caused by long-term use. Simultaneously, injection molding materials can be continuously optimized and updated to improve product reliability. With continuous technological advancements and changing practical application requirements, the performance of injection molding materials can be improved and optimized. For example, the strength, toughness, and heat resistance of the material can be improved to meet the operating requirements of the compressor under different conditions. Through continuous optimization of injection molding materials, product performance and reliability can be further improved, meeting the market demand for high-quality compressor valve plates.

[0034] Example 2.

[0035] like Figure 4 and Figure 5 As shown, there is another embodiment of this utility model: a valve plate with an injection-molded valve seat, including a base valve plate 1, on which an air intake port 1.1 is provided, and an air intake valve seat 2 is embedded in the air intake port 1.1; the air intake port 1.1 and the air intake injection channel 1.6 on the base valve plate 1 are connected, and the exhaust valve seat 3 is part of the base valve plate 1; the air intake injection channel 1.6 extends to the outside of the side of the base valve plate 1 for the flow of injection molding material forming the air intake valve seat 2, so that the injection molding material can smoothly reach the air intake port 1.1, thereby laying the foundation for the molding of the air intake valve seat 2.

[0036] like Figure 5 As shown, the suction injection channel 1.6 is used to guide the heated injection material into the suction valve port 1.1, ensuring that the injection material can accurately flow into the suction valve port 1.1. In this "mold" of the suction valve port 1.1, the injection material gradually cools and solidifies to form a high-quality suction valve seat 2, improving the overall performance and reliability of the product.

[0037] In this implementation, the base valve plate 1 and the exhaust valve seat 3 are made of metal, while the intake valve seat 2 is made of plastic. The metal base valve plate 1 and exhaust valve seat 3 ensure the strength and deformation resistance of the entire valve plate, enabling it to withstand various pressures and vibrations generated during compressor operation. The plastic valve seat effectively reduces the impact force generated when the valve plate strikes, protecting the valve plate, reducing noise, and lowering production costs. When the valve plate frequently strikes the intake valve seat 2 during operation, the plastic material acts like a soft sponge, absorbing some of the impact force, effectively protecting the valve plate and reducing the risk of damage due to frequent striking. Simultaneously, this buffering effect also reduces noise generation, making the compressor quieter during operation.

[0038] The valve seat assembly valve plate for compressors provided by this utility model has several beneficial effects. By using injection molding to manufacture the exhaust valve seat 3 and intake valve seat 2, the problem of valve plates easily breaking when impacted with the exhaust and intake ports is effectively improved. The damping effect of the plastic valve seat protects the valve plates, extends their service life, and improves the reliability of the compressor. The injection molding process is simple, saves materials, reduces costs, and is suitable for mass production and use. The rational design of the injection molding flow channel ensures uniform flow of injection material and high-quality molding of the valve seat, improving production efficiency and product quality. The precise fit between the valve seat and valve plate, as well as the flush surface and shape matching design, improves the sealing performance of the valve assembly and the smoothness of gas flow, thereby improving the compressor's working efficiency and performance. At the same time, the rational selection of materials reduces costs and noise while ensuring the strength of the valve plate.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A valve plate with injection molded valve seat, comprising a base valve plate, characterized in that, the base valve plate is provided with an air suction valve port and an exhaust valve port, and the air suction valve seat and the exhaust valve seat are injection molded parts, which are respectively embedded in the air suction valve port and the exhaust valve port; the base valve plate is respectively provided with an air suction injection flow inlet and an exhaust injection flow inlet on the two side edges, and the air suction valve seat and the exhaust valve seat are respectively provided with a handle at one end, and the handle end is respectively arranged at the air suction injection flow inlet and the exhaust injection flow inlet.

2. A valve plate having an injection molded valve seat as defined in claim 1, wherein, The exhaust valve port and the exhaust injection flow channel on the base valve plate are in communication, and the air suction valve port and the air suction injection flow channel on the base valve plate are in communication.

3. A valve plate having an injection molded valve seat as defined in claim 2, wherein, The exhaust injection flow channel and the air suction injection flow channel are used to guide the heated injection material to flow into the exhaust valve port and the air suction valve port respectively.

4. A valve plate having an injection molded valve seat as defined in claim 2, wherein, The base valve plate is made of metal material, and the exhaust valve seat and the air suction valve seat are made of plastic material.

5. A valve plate having an injection molded valve seat as defined in claim 3, wherein, The end of the exhaust injection flow channel is the exhaust injection flow inlet, and the end of the air suction injection flow channel is the air suction injection flow inlet, which is used to flow into the injection material forming the exhaust valve seat and the air suction valve seat.

6. A valve plate having an injection molded valve seat as defined in claim 5, wherein, The exhaust valve seat is provided with an exhaust hole, and the air suction valve seat is provided with an air suction hole, and the two side edges of the base valve plate where the handle end is located are oppositely arranged.

7. A valve plate having an injection molded valve seat according to claim 1 or 4, wherein, The upper and lower surfaces of the exhaust valve seat and the air suction valve seat are flush with the upper and lower surfaces of the base valve plate.

8. A valve plate with injection molded valve seat, comprising a base valve plate, characterized in that, the base valve plate is provided with an air suction valve port and an exhaust valve port, and the air suction valve seat is an injection molded part embedded in the air suction valve port, and the exhaust valve seat is part of the base valve plate; the base valve plate is provided with an air suction injection flow inlet on one side edge, and the air suction valve seat is provided with a handle at one end, and the handle end is arranged at the air suction injection flow inlet.

9. A valve plate having an injection molded valve seat as defined in claim 8, wherein, The air suction valve port and the air suction injection flow channel on the base valve plate are in communication, and the air suction injection flow channel is used to guide the heated injection material to flow into the air suction valve port.

10. A valve plate having an injection molded valve seat as defined in claim 8, wherein, The base valve plate and the exhaust valve seat are made of metal material, and the air suction valve seat is made of plastic material.

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