Ventilation assembly, compressor, and air conditioner having the same

Abstract

The present application provides a vent assembly, a compressor, and an air conditioner incorporating the same. The vent assembly comprises a one-way gas channel including an outlet with a blocking structure disposed thereat. The blocking structure is normally blocked within the outlet to close it. When the pressure of the gas within the gas channel exceeds a preset value, the gas within the gas channel pushes past the blocking structure to open the outlet. The vent assembly of the present application can prevent fatigue fracture of the exhaust valve plate due to continuous deformation.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioners, and in particular relates to a ventilation component, a compressor, and an air conditioner having the same. Background Art

[0002] At present, the ventilation assembly is one of the important components in the refrigeration cycle of the piston compressor. It controls the suction and exhaust of the compressor and affects the compression and expansion process of the refrigerant. For the current mainstream ventilation assembly, the ventilation assembly is mainly composed of valve plates, exhaust valve plates, lift limiters, cylinder head gaskets, cylinder heads and other parts. The coordination between a large number of parts poses great challenges to the realization of sealing effect, process accuracy, and product reliability. A kind of air ventilation assembly for compressors mentioned in the related art adopts a mechanical control method for exhaust. During the operation of the compressor, the exhaust valve plate must be repeatedly deformed and hit the lift limiter and the valve plate to realize the opening and closing of the exhaust port. This type of structure has many parts and has high requirements for the processing accuracy, transportation and storage conditions, and assembly process of the parts, and is costly. The exhaust effect needs to be achieved through continuous deformation of the exhaust valve plate, which is prone to fatigue fracture of the exhaust valve plate and failure of the compressor, leading to product after-sales and complaint issues.

[0003] Therefore, how to provide a ventilation assembly, a compressor and an air conditioner having the same that can prevent the exhaust valve plate from being continuously deformed and resulting in fatigue fracture has become an urgent problem that technicians in this field need to solve. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present application is to provide a ventilation component, a compressor and an air conditioner having the same, which can prevent the exhaust valve plate from being continuously deformed and causing fatigue fracture.

[0005] In order to solve the above problems, the present application provides a ventilation assembly, including a gas channel, the gas channel is a one-way channel, the gas channel includes an outlet, and a blocking structure is provided at the outlet; the blocking structure is often blocked at the outlet.

[0006] When the pressure of the gas in the gas channel is greater than a preset value, the gas in the gas channel can push the blocking structure to open the outlet.

[0007] Further, the gas channel includes a Tesla valve cavity.

[0008] Furthermore, the number of Tesla valve cavities is set to be more than two, and the more than two Tesla valve cavities are connected in series to form a one-way channel.

[0009] Furthermore, the ventilation assembly also includes a cylinder head; the gas channel is arranged on the cylinder head.

[0010] Furthermore, the ventilation assembly also includes a partition assembly; the partition assembly cover is arranged on the cylinder head; a groove is opened on the cylinder head; and a one-way channel is formed between the partition assembly and the groove.

[0011] Furthermore, an intake groove is provided on the cylinder head, and an intake cavity is formed between the partition assembly and the intake groove; an intake port is provided on the partition assembly, and the intake gas can enter the intake cavity through the intake port and then enter the compressor.

[0012] Furthermore, a silencer groove is provided on the cylinder head, and a silencer cavity is formed between the partition assembly and the silencer groove; an exhaust port and an air outlet are also provided on the partition assembly; the exhaust gas can enter the gas channel through the exhaust port, then enter the silencer cavity through the outlet, and be discharged through the air outlet.

[0013] Furthermore, the gas pressure in the gas channel is F1; the gravity of the blocking structure is G, and the gas pressure in the silencer cavity is F2; wherein, when F1>G+F2, the gas in the gas channel can push the blocking structure open to open the outlet.

[0014] Furthermore, the partition assembly includes a partition and a sealing member, wherein the partition is covered on the cylinder head; and the sealing member is sealingly arranged between the partition and the cylinder head.

[0015] According to another aspect of the present application, a compressor is provided, comprising a ventilation assembly, wherein the ventilation assembly is the ventilation assembly described above.

[0016] According to another aspect of the present application, an air conditioner is provided, comprising a compressor, which is the above-mentioned compressor.

[0017] The ventilation assembly, compressor and air conditioner provided in the present application can prevent fatigue fracture caused by continuous deformation of the exhaust valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation structure of the ventilation assembly according to an embodiment of the present application;

[0019] Figure 2 The first surface of the partition of the embodiment of the present application;

[0020] Figure 3 The second surface of the partition of the embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the installation structure of the cylinder structure of an embodiment of the present application;

[0022] Figure 5 This is a partial schematic diagram of the gas channel outlet of an embodiment of the present application;

[0023] Figure 6Schematic structural diagram of the Tesla valve cavity of an embodiment of the present application;

[0024] Figure 7 Schematic diagram of the forward flow of the gas passage of an embodiment of the present application;

[0025] Figure 8 Schematic diagram of the reverse flow of the gas passage of an embodiment of the present application.

[0026] The reference numerals are shown as:

[0027] 1. Cylinder head; 11. Gas passage; 111. Outlet; 112. Tesla valve cavity; 113. Inlet; 12. Plugging structure; 13. Suction groove; 14. Sound-absorbing groove; 2. Partition component; 21. Partition part; 22. Sealing member; 23. Suction port; 24. Exhaust port; 第25页 共105页 25. Outlet port; 26. First sealing area; 27. Second sealing area. Detailed implementation manners

[0028] Referring to Figure 1-8 As shown, a ventilation component includes a gas passage 11. The gas passage 11 is a one-way passage. The gas passage 11 includes an outlet 111, and a plugging structure 12 is provided at the outlet 111. The plugging structure 12 is normally blocked in the outlet 111 to close the outlet 111. When the pressure of the gas in the gas passage 11 is greater than a preset value, the gas in the gas passage 11 can push open the plugging structure 12 to open the outlet 111. In the present application, the outlet 111 is opened by the gas pushing to open the plugging structure 12. The plugging structure 12 replaces the exhaust valve plate, preventing the deformation of the exhaust valve plate and avoiding the opening and closing control of the valve port. Instead of using the traditional mechanical valve plate type for control, it avoids problems such as flutter, slapping noise, and fatigue fracture of the exhaust valve plate caused by mechanical moving structures. It solves the technical problems of the ventilation component requiring many parts and complex processes. It solves the technical problems that the exhaust valve plate generates flutter during the working cycle, increasing the energy loss of the compressor, reducing the refrigeration capacity, and shortening the service life of the valve plate. It solves the technical problem that the exhaust valve is prone to generate slapping noise when opening and closing. The present application adopts a one-way passage, without the energy loss caused by the gas force overcoming the spring force of the exhaust valve plate to open the valve port and the harmful phenomena caused by the premature or delayed closing of the exhaust valve port. The ventilation component of the present application can be used for the ventilation component at the exhaust end, and can also be applied to the gas one-way flow control of the suction valve, exhaust pipe, and suction pipe of a piston compressor. That is, the ventilation component described above is applied to the control of other valve ports of a piston compressor.

[0029] Moreover, when the compressor moves to the top dead center (i.e., the piston moves to the position closest to the valve plate) and completes the exhaust process and enters the suction process, no gas will be discharged from the outlet 111 anymore. At this time, F1≤0, so F1 < G + F2, and thus the plugging structure 12 can return. As Figure 5 The upper and lower end faces of the outlet 111 are arc-shaped, and the center of the circle is on the same axis as the cross-sectional center of the blocking structure 12. During the back-and-forth process, the end face arc of the outlet 111 will guide the moving direction of the blocking structure 12 so that it will not deviate from the outlet.

[0030] The cylinder head assembly in the prior art is one of the important components in the refrigeration cycle of the piston compressor. It controls the suction and exhaust of the compressor, affecting the compression and expansion process of the refrigerant. The exhaust structure of the current mainstream ventilation assembly is mainly composed of parts such as the valve plate, the exhaust valve plate, the lift limiter, the cylinder head 1 gasket, and the cylinder head 1. The coordination between the large number of parts poses a great challenge to the realization of the sealing effect, process accuracy, and product reliability. However, the present application uses gas to push the sealing structure 12 to open the outlet 111. The sealing structure 12 replaces the exhaust valve plate, making the structure simpler and more widely applicable.

[0031] The present application also discloses some embodiments, in which the gas channel 11 includes a Tesla valve cavity 112. The gas channel 11 can be an exhaust component provided at the exhaust port 24 of the compressor. The present application adopts the Tesla valve solution and the blocking structure 12 to jointly control the opening and closing of the exhaust valve, eliminating the lift limiter, exhaust valve plate, exhaust buffer plate and other parts of the traditional mechanical valve structure. The structure has fewer parts, low matching precision and strong reliability. The exhaust valve port directly achieves one-way circulation through the guidance of the airflow, and there is no energy loss caused by the gas force overcoming the spring force of the exhaust valve plate to open the valve port, and no harmful phenomena caused by premature or delayed closing of the exhaust valve port.

[0032] This application also discloses some embodiments in which the number of Tesla valve cavities 112 is set to be more than two, and more than two Tesla valve cavities 112 are connected in series to form a one-way channel. This application integrates the ventilation component into the cylinder head 1. Its structure adopts the Tesla valve solution and can be composed of one or more Tesla valves connected in series. When gas flows in from the positive inlet, the gas does not produce energy loss, allowing the gas in the cylinder hole to smoothly enter the exhaust end. When gas flows in from the reverse inlet, the gas has flow resistance, preventing the gas at the exhaust end from entering the cylinder hole, thereby achieving one-way conduction.

[0033] See attached Figure 8 When gas flows in from the forward inlet, the gas can be discharged directly from the reverse inlet through the first straight channel and the second straight channel, and the Tesla valve does not block the gas; when gas flows in from the reverse inlet, the gas flowing through the second straight channel will be split into two air flows at the intersection, one flows directly to the first straight channel, and the other flows to the curve, thereby changing the flow direction. The gas that changes the flow direction flows out from the curve outlet 111 and intersects with the gas flowing to the first straight channel between the curve inlet and the curve outlet 111, generating vortexes, thereby realizing energy dissipation, and finally only a small amount of gas flows out from the forward inlet.

[0034] See attached Figure 7 The ventilation assembly on the cylinder head 1 is composed of multiple Tesla valves connected in series. The forward inlet and reverse inlet of the Tesla valve are connected to form an inter-valve node. The unconnected forward inlet is the exhaust valve inlet, and the reverse inlet is the exhaust valve outlet 25. When the compressor compresses gas, the compressed high-temperature and high-pressure gas can flow into the ventilation assembly from the exhaust valve inlet and eventually be discharged directly from the exhaust valve outlet 25. When the compressor inhales, external gas enters the cylinder through the valve plate suction hole, causing the gas pressure at the exhaust valve inlet end to drop. Due to the pressure difference, the gas in the ventilation assembly tends to flow toward the exhaust valve inlet. However, due to the unidirectional conduction effect of the ventilation assembly, the gas will generate multiple vortexes inside the ventilation assembly to dissipate energy. Ultimately, only a very small amount of gas flows out of the exhaust valve inlet, achieving gas isolation. Because the breather assembly does not rely on moving parts for valve port control, it avoids problems such as chatter, slapping noise, and fatigue failure of moving parts. Furthermore, the breather assembly is simple, uses fewer parts, has low process costs, is highly reliable, and is economical. The exhaust assembly can form the cylinder head assembly of a piston compressor.

[0035] This application also discloses certain embodiments, wherein the ventilation assembly further includes a cylinder head 1; a gas passage 11 is provided on the cylinder head 1. This constitutes the cylinder head assembly of a piston compressor. The gas passage 11 may be an exhaust structure capable of discharging exhaust gas from the compression chamber. This application utilizes gas to push open a sealing structure 12 to open an outlet 111. The sealing structure 12 replaces the exhaust valve plate, preventing deformation of the exhaust valve plate and eliminating the need for valve opening and closing control.

[0036] This application also discloses some embodiments, in which the ventilation assembly further includes a partition assembly 2; the partition assembly 2 is mounted on the cylinder head 1; a groove is formed on the cylinder head 1; and a one-way channel is formed between the partition assembly 2 and the groove. The entire exhaust structure is integrated into the cylinder head 1, eliminating components such as the lift limiter, exhaust valve plate, and exhaust buffer plate of the traditional mechanical valve structure. The structure has fewer components, lower fitting precision, and higher reliability. The exhaust valve port directly achieves one-way flow through the guidance of the airflow, eliminating the energy loss caused by the gas force overcoming the spring force of the exhaust valve plate to open the valve port, and the harmful phenomena caused by premature or delayed closing of the exhaust valve port.

[0037] The present application also discloses some embodiments, in which an intake groove 13 is provided on the cylinder head 1, and an intake cavity is formed between the partition component 2 and the intake groove 13; an intake port 23 is opened on the partition component 2, and the intake gas can enter the intake cavity through the intake port 23 and then enter the compressor.

[0038] The present application also discloses some embodiments, in which a silencer groove 14 is provided on the cylinder head 1, and a silencer cavity is formed between the partition component 2 and the silencer groove 14; an exhaust port 24 and an air outlet 25 are also provided on the partition component 2; the exhaust gas can enter the gas channel 11 through the exhaust port 24, then enter the silencer cavity through the outlet 111, and be discharged through the air outlet 25.

[0039] The present application also discloses some embodiments, in which the gas pressure in the gas channel 11 is F1; the gravity of the blocking structure 12 is G, and the gas pressure in the silencer chamber is F2; wherein, when F1>G+F2, the gas in the gas channel 11 can push the blocking structure 12 away to open the outlet 111. The blocking structure 12 is a cylinder embedded in the cylinder head 1. When the compressor compresses the gas, the gravity of the blocking structure 12 can be used to control the gas pressure difference before and after the blocking structure 12, thereby achieving control of the exhaust pressure difference and compensating for the problem that the exhaust structure of the Tesla valve solution cannot achieve pressure difference control. How does the blocking structure 12 of the present application establish a pressure difference? The established pressure difference value is F1-F2>G.

[0040] The present application also discloses some embodiments, in which the partition assembly 2 includes a partition 21 and a seal 22. The partition 21 is provided on the cylinder head 1; the seal 22 is sealed between the partition 21 and the cylinder head 1. The partition 21 is a valve plate; the seal 22 is a cylinder head 1 gasket; because there is no need to install an exhaust valve plate on the valve plate, both sides of the valve plate are flat structures, and there is no need to provide a mounting groove for the exhaust structure. The second side of the valve plate cooperates with the cylinder head 1 gasket to ensure the airtightness of the exhaust structure. The surface of the valve plate is provided with an intake hole and an exhaust port 24 as a channel for the flow of gas at the intake and exhaust ends and to block the flow of gas between the intake and exhaust ends. The cylinder head 1 gasket is installed between the valve plate and the cylinder head 1, and mainly plays a sealing role, isolating the exchange between the exhaust silencer cavity and the external gas, sealing the ventilation assembly, and ensuring that the gas flows in one direction in the exhaust valve. See in conjunction with. Figure 2-3As shown, in the present application, both sides of the valve plate are planar structures, one side cooperates with the intake structure parts, and the other side cooperates with the cylinder head 1 gasket to ensure the airtightness of the exhaust structure and to cut off the gas flow between the intake end and the exhaust end. The cylinder head 1 gasket is installed between the valve plate and the cylinder head 1, and mainly plays a sealing role. The sealing structure 12 is mounted on the outlet 111 of the exhaust valve of the cylinder head 1 in an interlocking manner, and is used to form a pressure difference before and after the exhaust valve outlet 111 and to regulate the pressure difference when the compressor compresses the gas. The cylinder head 1 and the ventilation assembly are combined into a whole to realize the one-way conduction of the gas at the exhaust valve port. In addition, the cylinder head 1 is provided with a cylinder head 1 gasket mating surface and a silencer chamber, which play the role of structural sealing and silencing noise reduction. Because the valve plate eliminates the mounting grooves of the current mainstream mechanical exhaust structural parts, both the A and B surfaces are flat structures, and there is no need for multiple processing steps on the valve plate. The fitting surfaces are small and the precision requirements are low. In addition, the elimination of the mounting grooves can minimize the thickness of the valve plate, reduce the use of materials, and have strong reliability and good economic benefits. Figure 3 The filling area is used to illustrate the contact position between the parts in the patent; Figure 2 The plane shown will come into contact with other parts in actual use. This figure is mainly used to illustrate the function of each hole in the valve plate.

[0041] It can reduce the backflow of high-temperature and high-pressure gas from the exhaust side into the cylinder after exhaust, increase the effective volume of the compressor, and improve compressor performance. It solves the technical problem of multiple sealing sections and poor airtightness of the ventilation component.

[0042] The cylinder head gasket 1 is installed between the valve plate and the cylinder head 1. The gasket exhaust hole on the gasket surface is a through hole, which is concentrically matched with the valve plate exhaust hole and the exhaust valve inlet to provide a channel for gas to discharge from the compression chamber. Figure 4 The dot-shaped filling area is the first sealing area 26 of the valve plate. Figure 4 The dotted filling area is the first sealing area 26 of the cylinder head 1 and the first sealing area 26 of the gasket respectively. Figure 3 The first sealing area 26 of the valve plate cooperates with the first sealing area 26 of the cylinder head 1 to perform a sealing function, thereby isolating the exchange between the exhaust chamber of the cylinder head 1 and the external gas. Figure 4 The oblique line filling position in the elliptical area shown in FIG is the second sealing area 27 of the valve plate. Figure 4 The oblique line filled area of the elliptical area shown in the figure is the second sealing area 27 of the cylinder head 1. The gasket also has a second sealing area 27. This section cooperates with the second sealing area 27 of the valve plate and the second sealing area 27 of the cylinder head 1 to seal the gas channel 11 and ensure that the gas flows in one direction in the exhaust valve.

[0043] Figure 4 This is the structural diagram of the cylinder head 1 described in this patent. Figure 5This is an enlarged view of the sealing structure 12 of the present application installed at the outlet 111. Since the exhaust valve structure using the Tesla valve solution only realizes the one-way conduction of gas, it is unable to establish a pressure difference when the compressor compresses the exhaust gas, so that the discharged compressed gas can reach the gas pressure increase value required at the exhaust end. Therefore, it is necessary to design a corresponding structure to establish the exhaust pressure difference, such as Figure 7 The blocking structure 12 is embedded in the exhaust valve outlet 25. When the compressor is in the intake stage or the gas pressure does not reach the design value during exhaust, the blocking structure 12 will fit together with the lower mating surface of the exhaust valve outlet 25 due to the effect of gravity, so that the gas with a small pressure difference cannot flow out of the gas channel 11. When the compressor compresses the gas, the pressure in the gas channel 11 continues to increase until the pressure difference between the gas pressure in the exhaust valve structure and the gas pressure in the exhaust muffler chamber exceeds the gravity of the blocking structure 12. The blocking structure 12 will overcome the gravity and move upward, and the exhaust valve outlet 25 will open, allowing the compressor to start exhausting. That is, when F1>G+F2, the compressed gas can be discharged from the gas channel 11, where F1 is the gas pressure in the gas channel 11 when the compressor compresses the gas, G is the gravity of the blocking structure 12, and F2 is the gas pressure at the exhaust muffler chamber. For the pressure difference between the gas channel 11 and the exhaust muffler chamber when the compressor compresses the gas, the pressure difference can be controlled by changing the weight of the blocking structure 12 by changing the material density and volume. The design of the blocking structure 12 makes up for the problem that the exhaust structure of the Tesla valve solution cannot achieve pressure difference control. Figure 4 The middle elliptical area is the gas channel 11, which forms an integral structure with the cylinder head 1 and can be directly formed by casting. When the compressor is exhausting, the gas in the compression chamber enters the gas channel 11 from the inlet 113 through the valve plate exhaust hole and the gasket exhaust hole, and is unidirectionally guided in the gas channel 11 and flows out from the outlet 111, enters the exhaust muffler chamber for silencing, and finally flows out of the cylinder head assembly through the valve plate outlet 25.

[0044] According to an embodiment of the present application, a compressor is provided, including a ventilation assembly, and the ventilation assembly is the ventilation assembly mentioned above. The compressor is a piston compressor. The present application designs a ventilation assembly for a piston compressor, and the opening and closing control of the valve port is not controlled by a traditional mechanical valve plate, thereby avoiding problems such as vibration, slapping noise, and fatigue fracture of the exhaust valve plate caused by the mechanical movable structure. The exhaust structure involved in the present application innovatively adopts the Tesla valve solution to control the opening and closing of the exhaust valve. The opening and closing control structure of the exhaust valve is integrated into the cylinder head 1, eliminating the lift limiter, exhaust valve plate, exhaust buffer plate and other parts of the traditional mechanical valve plate. There are fewer structural parts, low matching accuracy and strong reliability. The exhaust valve port directly realizes one-way circulation through the guidance of the airflow, and there is no energy loss caused by the gas force overcoming the spring force of the exhaust valve plate to open the valve port, and there is no harmful phenomenon caused by the early or delayed closing of the exhaust valve port.

[0045] According to an embodiment of the present application, an air conditioner is provided, including a compressor, which is the above-mentioned compressor.

[0046] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0047] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A ventilation assembly, characterized in that: The invention comprises a gas channel (11), wherein the gas channel (11) is a one-way channel, the gas channel (11) comprises an outlet (111), and a blocking structure (12) is provided at the outlet (111); the blocking structure (12) is usually blocked in the outlet (111) to close the outlet (111); when the pressure of the gas in the gas channel (11) is greater than a preset value, the gas in the gas channel (11) can push the blocking structure (12) to open the outlet (111); The gas channel (11) includes a Tesla valve cavity (112); The ventilation assembly further comprises a cylinder head (1); the gas channel (11) is provided on the cylinder head (1); The ventilation assembly further comprises a partition assembly (2); the partition assembly (2) is covered on the cylinder head (1); The cylinder head (1) is provided with a silencer groove (14), and a silencer cavity is formed between the partition assembly (2) and the silencer groove (14); The blocking structure (12) is a cylindrical body, embedded in the outlet (111), the upper end of the outlet (111) is connected to the muffler cavity, and the lower end of the outlet (111) is connected to the Tesla valve cavity (112), forming at least a partial structure of the gas channel (11); The gas pressure in the gas channel (11) is F1; the gravity of the blocking structure (12) is G, and the gas pressure in the muffler cavity is F2; wherein, when F1>G+F2, the gas in the gas channel (11) can push the blocking structure (12) to open the outlet (111).

2. The ventilation assembly according to claim 1, characterized in that The number of the Tesla valve chambers (112) is set to be more than two, and the more than two Tesla valve chambers (112) are connected in series to form the one-way channel.

3. The vent assembly according to claim 1, wherein: A groove is provided on the cylinder cover (1); and the one-way channel is formed between the partition assembly (2) and the groove.

4. The ventilation assembly according to claim 3, characterized in that The cylinder head (1) is also provided with an air intake groove (13), and an air intake cavity is formed between the partition assembly (2) and the air intake groove (13); an air intake port (23) is provided on the partition assembly (2), and air intake gas can enter the air intake cavity through the air intake port (23) and then enter the compressor.

5. The vent assembly according to claim 3, wherein: The partition assembly (2) is also provided with an exhaust port (24) and an air outlet (25); the exhaust gas can enter the gas channel (11) through the exhaust port (24), then enter the muffler cavity through the outlet (111), and be discharged through the air outlet (25).

6. The vent assembly according to claim 3, characterized in that The partition assembly (2) comprises a partition (21) and a sealing member (22), wherein the partition (21) is covered on the cylinder head (1); and the sealing member (22) is sealingly arranged between the partition (21) and the cylinder head (1).

7. A compressor comprising a vent assembly, characterized in that: The ventilation assembly is the ventilation assembly according to any one of claims 1 to 6.

8. An air conditioner comprising a compressor, characterized in that: The compressor is the compressor described in claim 7.

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