Valve clack, temperature control valve and air conditioner

Abstract

The utility model provides a valve clack, a temperature control valve and an air conditioner. The valve clack comprises a valve clack body and a sealing structure. The valve clack body is provided with a first end face, and the sealing structure is installed on the first end face. The sealing structure comprises a first sealing piece and a second sealing piece, the first sealing piece and the second sealing piece are sequentially installed on the first end face, the radial outer edge of the first sealing piece and the radial outer edge of the second sealing piece extend towards the radial outer edge of the first end face, the first sealing piece is made of graphite materials, and the second sealing piece is made of aluminum foil materials. According to the double-layer sealing structure, on the premise that the sealing performance is not affected, the sealing piece is not prone to unrecoverable deformation within the service life due to the high abrasion resistance of the graphite material and the ductility of the aluminum foil.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioners, and in particular relates to a valve flap, a temperature control valve and an air conditioner. Background Art

[0002] With the continuous advancement of air conditioning technology, its applications have expanded unprecedentedly, encompassing train, shipboard, and aircraft air conditioning. Unlike conventional air conditioning's "refrigerant + four-way valve" cooling scheme, aircraft air conditioning utilizes an "air cycle unit + temperature control valve" cooling system to achieve air conditioning. Therefore, aircraft air conditioning is also known as an environmental control system. The temperature control valve, the core temperature control component of the environmental control system, uses high-temperature, high-pressure engine bleed air, typically above 250°C. High-precision, high-reliability temperature control valves are essential for the stable operation of the environmental control system. As an airborne component, lightweight design and ease of maintenance are also crucial.

[0003] Existing valve disc sealing systems with similar functions are roughly divided into two types. One type simply utilizes the elastic deformation of a metal spring, which is locked into the valve disc sealing groove and achieves a seal between the valve disc and the valve body through the spring's elasticity. This type of spring is extremely inconvenient to install and remove, and can easily cause irreversible deformation of the spring, affecting the sealing effect. The other type simply utilizes the brittleness and self-lubricating properties of a flexible graphite gasket to achieve a sealing effect. However, this sealing method is affected by wear of the graphite gasket. Utility Model Content

[0004] The utility model provides a valve flap, a temperature control valve and an air conditioner, which can solve the technical problem that the existing valve flap sealing system adopts a single metal material gasket and has a poor sealing effect.

[0005] The utility model provides a valve flap, which includes a valve flap body and a sealing structure;

[0006] The valve disc body has a first end surface, and the sealing structure is mounted on the first end surface;

[0007] The sealing structure includes a first seal and a second seal, which are installed on the first end face in sequence. The radial outer edges of the first seal and the second seal extend toward the radial outer edge of the first end face. The first seal is made of graphite material, and the second seal is made of aluminum foil material.

[0008] In some embodiments, the sealing structure further includes a third sealing member, the first sealing member, the second sealing member, and the third sealing member are sequentially mounted on the first end face, and the third sealing member is made of graphite material.

[0009] In some embodiments, at least two second sealing members are disposed between the first sealing member and the third sealing member.

[0010] In some embodiments, the first seal, the second seal and the third seal are annular, and the valve flap body is provided with a groove along the circumferential outer edge of the first end face, and the first seal, the second seal and the third seal are installed in the groove.

[0011] In some embodiments, the valve flap body includes a first flap body and a second flap body connected to each other, the thickness of the second flap body is less than the thickness of the first flap body, the end face of the first flap body facing away from the second flap body is the first end face, the end face of the second flap body facing away from the first flap body is the second end face, and a reinforcing rib is provided on the second end face.

[0012] In some embodiments, a second valve stem mounting platform is further provided on the second end surface, and at least two of the reinforcing ribs are provided on the second end surface. With the second end surface as the projection surface, the two reinforcing ribs are symmetrically arranged about the radial geometric center line of the second valve stem mounting platform, and there is an angle between the radial geometric center line of the reinforcing rib and the radial geometric center line of the second valve stem mounting platform, and the angle is 100° to 150°.

[0013] In some embodiments, a first end surface of the first petal body is formed with a boss structure by providing a groove, and a weight-reducing groove is provided on the boss structure.

[0014] In some embodiments, a first valve stem mounting platform is provided on the boss structure, and the first valve stem mounting platform and the second valve stem mounting platform are respectively provided with a first mounting hole and a second mounting hole, and the first mounting hole and the second mounting hole open in opposite directions.

[0015] In some embodiments, the sealing structure further includes a fixed baffle, which is arranged on the side of the second seal away from the first seal, and a plurality of connecting holes are distributed circumferentially on the valve flap body, the first seal, the second seal and the fixed baffle, and fasteners are installed in the connecting holes.

[0016] A temperature control valve comprises a valve flap, wherein the valve flap is the valve flap mentioned above.

[0017] An air conditioner comprises a temperature control valve, wherein the temperature control valve is the above-mentioned temperature control valve.

[0018] The utility model provides a valve flap, a temperature control valve and an air conditioner, which have the following beneficial effects:

[0019] The sealing structure of the present invention is arranged on the first end face, which can more directly seal the medium passing through the valve disc, reduce the possibility of leakage, improve the overall sealing performance, simplify the overall structural setting of the valve disc, facilitate manufacturing and assembly, and also facilitate subsequent maintenance and replacement. In addition, the sealing structure is arranged on the end face, which can more evenly distribute the stress on the seal, reduce stress concentration, and avoid premature failure of the seal due to stress concentration. Taking into account the influence of thermal expansion, the sealing structure is arranged on the first end face, so that the sealing structure can adapt to temperature changes, maintain sealing performance, and avoid seal failure due to thermal expansion.

[0020] Secondly, the first and second seals of the present invention are made of different materials. Graphite, due to its high-temperature resistance, corrosion resistance, good self-lubrication, and low friction coefficient, is suitable for use in high-temperature and high-pressure environments. Aluminum foil, on the other hand, offers excellent ductility and ease of forming. This combined sealing system, using a flexible graphite first seal and an aluminum foil second seal, offers a wide temperature resistance range and complementary mechanical properties. This solves the problem of high leakage caused by the low precision of the inner surface of the temperature control valve body, improves control accuracy, and ensures that the valve disc maintains good sealing performance even in high-temperature and high-pressure engine bleed air. Compared to existing sealing methods that rely solely on metal springs or flexible graphite gaskets, the present double-layer sealing structure leverages the high wear resistance of graphite and the ductility of aluminum foil to prevent irreversible deformation over the seal's service life without compromising sealing performance. Furthermore, graphite and aluminum foil are lighter than traditional metal seals, contributing to lightweighting of airborne components, thereby reducing the weight of the entire environmental control system and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0022] Figure 1 This is an exploded view of the valve disc of an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram of a valve flap according to an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a valve flap body according to an embodiment of the present invention;

[0025] Figure 4This is a schematic diagram of the first petal of an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the second petal of an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of a valve stem according to an embodiment of the present invention being installed on a first valve stem mounting platform and a second valve stem mounting platform;

[0028] Figure 7 This is a schematic diagram of the water quality level line of the valve disc body of the embodiment of the present utility model;

[0029] Figure 8 Schematic diagram of the sealing structure of an embodiment of the utility model

[0030] Illustrations: 1-valve disc body; 11-first disc body; 111-boss structure; 112-weight-reducing groove; 113-first valve stem mounting platform; 114-first mounting hole; 12-second disc body; 121-reinforcing rib; 122-second valve stem mounting platform; 123-second mounting hole; 101-first end face; 102-second end face; 103-groove; 2-sealing structure; 21-first sealing member; 22-second sealing member; 23-third sealing member; 3-fixed baffle; 41-connecting hole; 42-fastener. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0035] See also Figures 1 to 3 As shown, according to an embodiment of the present invention, a valve flap is provided, comprising a valve flap body 1 and a sealing structure 2; the valve flap body 1 has a first end face 101, and the sealing structure 2 is installed on the first end face 101; the sealing structure 2 comprises a first seal 21 and a second seal 22, which are sequentially installed on the first end face 101, and the radial outer edges of the first seal 21 and the second seal 22 extend toward the radial outer edges of the first end face 101, the first seal 21 is made of graphite material, and the second seal 22 is made of aluminum foil material.

[0036] Specifically, when installing the sealing structure 2, first install the first sealing member 21 on the first end face 101, and then install the second sealing member 22 on the first sealing member 21. When the valve flap is in the open state, high-temperature and high-pressure fluid will flow through the valve flap body 1. The valve flap regulates the circulating air. The valve flap controls the flow of the medium through the sealing structure 2 on its end face, ensuring that the medium does not leak when adjusting the temperature.

[0037] Specifically, during the process of opening and closing the valve flap, the valve flap will be subjected to pressure from the medium during operation. Especially when the valve flap is closed, it needs to withstand all the pressure from the medium to ensure that the medium does not leak from the outer edge of the valve flap. Secondly, due to the high temperature of the medium, the valve flap and the sealing structure 2 will be affected by thermal stress, which will also cause the material to expand or deform in extreme cases. In addition, the sealing structure 2 will be subjected to extrusion and friction mechanical stress, and the sealing structure 2 will also gradually wear due to the flow and friction of the medium.

[0038] In this embodiment, a general insert-type sealing gasket is a half-sealing ring inserted in an interlaced manner. Due to the limited width of the sealing groove, during actual operation, the sealing ring is damaged due to pressure or scratches by burrs in the groove, affecting the sealing effect. The sealing structure 2 of this embodiment is set on the first end face 101, which can more directly seal the medium passing through the valve disc, reduce the possibility of leakage, improve the overall sealing performance, simplify the overall structural setting of the valve disc, facilitate manufacturing and assembly, and also facilitate subsequent maintenance and replacement. In addition, setting the sealing structure 2 on the end face can more evenly distribute the stress on the seal, reduce stress concentration, and avoid premature failure of the seal due to stress concentration. Taking into account the influence of thermal expansion, the sealing structure 2 is set on the first end face 101 so that the sealing structure 2 can adapt to temperature changes, maintain sealing performance, and avoid sealing failure due to thermal expansion.

[0039] Secondly, the first and second seals 21 and 22 of this embodiment are made of different materials. Graphite, due to its high-temperature resistance, corrosion resistance, good self-lubrication, and low friction coefficient, is suitable for use in high-temperature and high-pressure environments. Aluminum foil, on the other hand, offers excellent ductility and ease of forming. This combined sealing system, using flexible graphite for the first seal 21 and aluminum foil for the second seal 22, offers a wide temperature resistance range and complementary mechanical properties. This solves the problem of high leakage caused by the low precision of the inner surface of the temperature control valve body, improves control accuracy of the temperature control valve, and ensures that the valve disc maintains good sealing performance even in high-temperature and high-pressure engine bleed air. Compared to existing sealing methods that rely solely on metal springs or flexible graphite gaskets, this double-layer sealing structure 2 of this embodiment, while maintaining sealing performance, utilizes the high wear resistance of graphite and the ductility of aluminum foil to prevent irreversible deformation during the seal's service life. Furthermore, compared to traditional metal seals, graphite and aluminum foil are lighter in weight, contributing to lightweighting of airborne components, thereby reducing the weight of the entire environmental control system and improving energy efficiency.

[0040] See also Figures 1 to 3As shown, the sealing structure 2 further includes a third sealing member 23 . The first sealing member 21 , the second sealing member 22 and the third sealing member 23 are sequentially mounted on the first end face 101 . The third sealing member 23 is made of graphite material.

[0041] In this embodiment, the first seal 21 and the third seal 23 are made of graphite. Graphite itself has good self-lubrication properties, which can reduce friction loss and extend the service life of the seal ring. Graphite material has high compression deformation and rebound capabilities, which enable the seal to effectively rebound after being subjected to pressure and maintain the sealing effect. Graphite material has a low thermal expansion coefficient, which helps maintain the stability of the sealing structure 2 under temperature changes. The provision of the third seal 23 can better control deformation caused by thermal expansion or thermal stress and maintain the sealing performance. By providing three seals installed in sequence, a multiple sealing barrier is formed, which can effectively prevent the leakage of high-temperature and high-pressure media. Experiments have shown that the sealing system uses a flexible graphite seal on the outside and a multi-layer aluminum foil seal on the inside, which has a better sealing effect. The three-layer seal setting can maintain a uniform temperature distribution and stress distribution, avoiding sealing failure caused by local overheating or stress concentration. The three-layer seal setting of this embodiment can complement each other, increase the contact area and effect of the sealing surface, and thus enhance the overall sealing performance.

[0042] As a specific implementation, the optimal method of this embodiment is to use graphite for the first seal 21 and the second seal 22, and aluminum foil for the second seal 22. In other embodiments, the installation order and number of seals can be adjusted based on the structural implementation and usage requirements of the valve disc body 1. For example, only the second seal 22 and the third seal 23 can be provided, and the second seal 22 and the third seal 23 can be installed sequentially on the valve disc body 1. The use of seals of different materials in the sealing structure 2 can achieve complementary performance and better withstand radial forces.

[0043] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, at least two second sealing members 22 are provided between the first sealing member 21 and the third sealing member 23 .

[0044] Specifically, the valve flap sealing system uses a multi-layer aluminum foil seal, which has low density, good toughness, easy deformation, and higher plasticity. By increasing the number of second seals 22, an additional sealing layer can be provided, thereby improving the overall sealing performance, reducing or preventing leakage of the medium in high temperature and high pressure environments, and can also serve as a redundant system. Even if one of the seals fails, the other seals can still maintain the sealing effect, improving the reliability of the entire system. In addition, combined with the material properties of aluminum foil, the good toughness of aluminum foil can adapt to different sealing requirements, while also greatly simplifying the sealing requirements. The provision of multiple second seals 22 between the first seal 21 and the third seal 23 can improve sealing performance, enhance reliability, extend service life, improve thermal conductivity and mechanical stability, and provide better corrosion resistance, thereby ensuring that the temperature control valve of the onboard air conditioning and environmental control system can operate stably under various operating conditions.

[0045] As a specific implementation method, this embodiment is provided with three layers of second seals 22, and the outer edges of the first seal 21 to the third seal 23 all extend toward the outer edge of the valve flap body 1. The three layers of second seals 22 are provided, so that the sealing structure 2 of this embodiment can not only meet the needs, but also ensure that the thickness of the seal will not be too large, thereby reducing the overall weight of the valve flap.

[0046] It is worth noting that in this embodiment, the first to third sealing members 21 to 23 can have various structural forms. The sealing members can be sealing rings, sealing gaskets, or, depending on sealing requirements, sealing plates. The radial outer edges of the first to third sealing members 21 to 23 extend toward the radial outer edge of the first end face 101 of the valve disc body 1. The optimal configuration is for the diameters of the first to third sealing members 21 to 23 to be slightly larger than the diameter of the valve disc body 1. This configuration provides a better sealing effect while reducing wear on the seals.

[0047] See also Figures 4 to 6 As shown, the first seal 21, the second seal 22 and the third seal 23 are annular, and a groove 103 is provided on the valve disc body 1 along the circumferential outer edge of the first end face 101. The first seal 21, the second seal 22 and the third seal 23 are installed in the groove 103. The depth of the groove 103 should be greater than the thickness of the first seal 21 to the third seal 23 after stacking.

[0048] In this embodiment, the seal is arranged in an annular shape. The annular seal can be more evenly distributed on the first end face 101 of the valve disc. In this way, when the valve disc is closed, the seal can evenly withstand the pressure from the medium, reducing wear or damage to the seal caused by excessive local pressure. The annular seal can better adapt to thermal expansion caused by temperature changes. The design of the groove 103 allows the seal to have a certain amount of expansion space when heated, avoiding the impact of thermal expansion on the sealing performance. In addition, the annular seal can reduce stress concentration points because the stress can be more evenly distributed over the entire sealing ring, rather than concentrated at a single point. Installing the seal in the groove 103 allows for convenient installation, replacement, and maintenance. The groove 103 provides a location for fixing the seal, ensuring the correct positioning of the seal on the valve disc. The use of the annular seal and the groove 103 improves the structural stability of the entire valve disc, allowing the valve disc to maintain good working condition even in high temperature and high pressure environments.

[0049] See also Figures 1 to 6 As shown, the valve flap body 1 includes a first flap body 11 and a second flap body 12 connected to each other, the thickness of the second flap body 12 is less than the thickness of the first flap body 11, the end face of the first flap body 11 facing away from the second flap body 12 is the first end face 101, and the end face of the second flap body 12 facing away from the first flap body 11 is the second end face 102, and a reinforcing rib 121 is provided on the second end face 102.

[0050] Specifically, the reinforcing ribs 121 can increase the local rigidity of the valve flap body 1, especially when the second flap body 12 is relatively thin. The reinforcing ribs 121 can effectively improve its load-bearing capacity and prevent deformation caused by pressure or temperature changes. Furthermore, as structural elements, the reinforcing ribs 121 can improve the stability of the entire valve flap, especially when operating in high-temperature and high-pressure environments. The reinforcing ribs 121 help maintain the structural integrity of the valve flap and improve the stress distribution of the valve flap body 1. In particular, the reinforcing ribs 121 can reduce stress concentration in the thinner portion of the second flap body 12, preventing material fatigue or fracture caused by excessive local stress.

[0051] In a specific embodiment, the cross-sections of the first and second petals 11, 12 are both circular, and the diameters of the first and second petals 11, 12 are the same. The reinforcing ribs 121 can be integrally formed with the second petal 12, or welded or fixed to the second petal 12 as independent components, facilitating subsequent maintenance and replacement.

[0052] See also Figures 1 to 6As shown, a second valve stem mounting platform 122 is further provided on the second end surface 102, and at least two reinforcing ribs 121 are provided on the second end surface 102. With the second end surface 102 as the projection surface, the two reinforcing ribs 121 are symmetrically arranged about the radial geometric center line of the second valve stem mounting platform 122, and an angle is formed between the radial geometric center line of the reinforcing rib 121 and the radial geometric center line of the second valve stem mounting platform 122, and the angle is 100° to 150°.

[0053] In this embodiment, by arranging the reinforcing ribs 121 at specific angles, the force transmitted through the valve disc can be more rationally distributed, stress concentration can be reduced, and material fatigue or fracture caused by local overload can be avoided. The symmetrical layout and specific angle of the reinforcing ribs 121 facilitate better alignment and positioning of the second valve stem mounting platform 122 during installation and maintenance, simplifying the assembly process. Secondly, while the second valve stem mounting platform 122 can improve structural strength, the reinforcing ribs 121 arranged at specific angles can enhance the valve disc body 1's ability to resist torsional forces, preventing deformation or damage to the valve disc when subjected to rotational forces. The angle and symmetrical layout of the reinforcing ribs 121 facilitate more effective transmission of the force applied by the valve stem, ensuring uniform force distribution and reducing local pressure on the valve disc body 1. Furthermore, the reinforcing ribs 121, as anti-bending components, enhance the performance of the valve disc when subjected to bending moments. In particular, the reinforcing ribs 121 can reduce bending deformation caused by pressure or temperature changes when the valve disc is opened and closed.

[0054] See also Figures 1 to 6 As shown, the first end surface 101 of the first petal body 11 is provided with a boss structure 111 by providing a groove 103 , and a weight-reducing groove 112 is provided on the boss structure 111 .

[0055] In this embodiment, the boss structure 111 can serve as a reinforcement portion to increase the local rigidity of the valve disc body 1. In particular, when subjected to high-temperature and high-pressure medium pressure, the boss can provide additional support and reduce the risk of deformation. By providing a weight-reducing groove 112 on the boss structure 111, the weight of the valve disc can be reduced without affecting the structural strength, and energy efficiency and performance can be improved by reducing weight. Since the first to third seals 21 to 23 are installed in the groove 103, the thickness of the first flap body 11 is greater than the thickness of the second flap body 12. In this way, even if the groove 103 is provided on the first end face 101 of the first flap body 11, the structural rigidity of the first flap body 11 will not be reduced. At the same time, considering that the boss structure 111 has a certain thickness, providing a weight-reducing groove 112 on the boss structure 111 can reduce the weight of the valve disc while ensuring sufficient strength and rigidity, thereby achieving lightweighting.

[0056] See also Figures 1 to 6As shown, a first valve stem mounting platform 113 is provided on the boss structure 111 , and a first mounting hole 114 and a second mounting hole 123 are provided on the first valve stem mounting platform 113 and the second valve stem mounting platform 122 respectively. The first mounting hole 114 and the second mounting hole 123 open in opposite directions.

[0057] In this embodiment, two flap bodies are provided. Compared with the conventional way of connecting the valve stem and the outer edge of the valve flap body 1, the valve stem of this embodiment is respectively connected to the two end faces of the valve flap, which can make the connection between the valve stem and the valve flap more stable and reduce the displacement or loosening of the valve stem caused by external force or vibration. The openings of the mounting holes face opposite directions, so that the valve stem can be installed from two different directions, providing greater flexibility and facilitating installation operations under different space restrictions.

[0058] As a specific implementation method, Figure 6 and Figure 7 As shown, the connection between the first flap body 11 and the second flap body 12 is perpendicular to the horizontal direction. This arrangement is based on the fact that the valve stem installed on the first valve stem mounting platform 113 and the valve stem installed on the second valve stem mounting platform 122 are not located on the same vertical line or parallel to each other, and there is a certain inclination between the two. The valve stem is respectively connected to the two end faces of the valve disc, which can make the connection between the valve stem and the valve disc more stable.

[0059] As a specific embodiment, the first mounting hole 114 and the second mounting hole 123 are oblong, with the longitudinal section of the valve disc as the projection surface. The mounting holes are opened along the radial direction of the valve stem mounting platform. In the direction perpendicular to the mounting holes, the hole wall of the mounting hole is also provided with a hole. This hole is used to install bolts or screws for installing the valve stem in the valve stem mounting platform.

[0060] See also Figures 1 to 3 As shown, the sealing structure 2 also includes a fixed baffle 3, which is arranged on the side of the second sealing member 22 away from the first sealing member 21. A plurality of connecting holes 41 are evenly distributed in the circumference of the valve disc body 1, the first sealing member 21, the second sealing member 22 and the fixed baffle 3, and fasteners 42 are installed in the connecting holes 41.

[0061] Specifically, when the sealing structure 2 includes the third seal 23, the fixed baffle 3 is positioned on the side of the third seal 23 facing away from the second seal 22. The third seal 23 is provided with connection holes 41. These, combined with the multiple connection holes 41 uniformly distributed around the circumference of the valve body 1, the first seal 21, the second seal 22, and the fixed baffle 3, enhance the integrity and stability of the entire valve structure through the installation of fasteners 42. The multiple connection holes 41 allow fasteners 42 to be used in different fastening configurations, which can be adjusted to achieve the optimal fastening effect based on specific application requirements and operating conditions. By tightly connecting the various components using fasteners 42, the reliability and durability of the valve can be improved in harsh environments such as high pressure and high temperature, reducing maintenance costs and potential failure risks.

[0062] As a specific implementation, the fastener 42 can be a screw, a rivet, a pin, a fuse, etc. In the embodiment, rivets are preferably used for fixing, which has good anti-loosening effect, low cost, and high production efficiency.

[0063] A temperature control valve comprises a valve flap, which is the valve flap mentioned above.

[0064] In this embodiment, when the valve flap is applied to a temperature-controlled valve, the first seal 21 and the third seal 23 are made of graphite. Graphite itself has excellent self-lubrication properties, which can reduce friction loss and extend the service life of the seal ring. Graphite also has high compression deformation and resilience, which allows the seal to effectively rebound after being subjected to pressure, maintaining the sealing effect. Graphite has a low coefficient of thermal expansion, which helps maintain the stability of the sealing structure 2 under temperature fluctuations. The third seal 23 can better control deformation caused by thermal expansion or thermal stress, maintaining sealing performance. By providing three seals installed in sequence, a multiple sealing barrier is formed, which can effectively prevent the leakage of high-temperature and high-pressure media. Experiments have shown that the sealing system with a flexible graphite seal on the outside and a multi-layer aluminum foil seal on the inside has better sealing performance. The three-layer seal configuration can maintain a uniform temperature and stress distribution, avoiding seal failure caused by local overheating or stress concentration. The three-layer seal configuration of this embodiment complements each other, increasing the contact area and effectiveness of the sealing surfaces, thereby enhancing the overall sealing performance.

[0065] An air conditioner comprises a temperature control valve, which is the above-mentioned temperature control valve.

[0066] 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.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above are only preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and variations can be made without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A valve flap, characterized in that: include: A valve disc body (1) and a sealing structure (2); The valve flap body (1) has a first end surface (101), and the sealing structure (2) is mounted on the first end surface (101); The sealing structure (2) comprises a first sealing member (21) and a second sealing member (22), wherein the first sealing member (21) and the second sealing member (22) are sequentially mounted on the first end face (101), and radial outer edges of the first sealing member (21) and the second sealing member (22) extend toward the radial outer edges of the first end face (101), the first sealing member (21) is made of graphite material, and the second sealing member (22) is made of aluminum foil material.

2. The valve flap according to claim 1, characterized in that The sealing structure (2) further comprises a third sealing member (23); the first sealing member (21), the second sealing member (22) and the third sealing member (23) are sequentially mounted on the first end face (101); and the third sealing member (23) is made of graphite material.

3. The valve flap according to claim 2, characterized in that At least two second sealing members (22) are provided between the first sealing member (21) and the third sealing member (23).

4. The valve flap according to claim 3, characterized in that The first seal (21), the second seal (22) and the third seal (23) are annular, and a groove (103) is provided on the valve disc body (1) along the circumferential outer edge of the first end surface (101), and the first seal (21), the second seal (22) and the third seal (23) are installed in the groove (103).

5. The valve flap according to claim 1, characterized in that The valve flap body (1) comprises a first flap body (11) and a second flap body (12) connected to each other, the thickness of the second flap body (12) is less than the thickness of the first flap body (11), the end face of the first flap body (11) facing away from the second flap body (12) is the first end face (101), the end face of the second flap body (12) facing away from the first flap body (11) is the second end face (102), and a reinforcing rib (121) is provided on the second end face (102).

6. The valve flap according to claim 5, characterized in that A second valve stem mounting platform (122) is also provided on the second end surface (102), and at least two reinforcing ribs (121) are provided on the second end surface (102). With the second end surface (102) as the projection surface, the two reinforcing ribs (121) are symmetrically arranged about the radial geometric center line of the second valve stem mounting platform (122), and an angle is formed between the radial geometric center line of the reinforcing rib (121) and the radial geometric center line of the second valve stem mounting platform (122), and the angle is 100° to 150°.

7. The valve flap according to claim 6, characterized in that The first end surface (101) of the first petal (11) is provided with a boss structure (111) by providing a groove (103), and a weight-reducing groove (112) is provided on the boss structure (111).

8. The valve flap according to claim 7, characterized in that A first valve stem mounting platform (113) is provided on the boss structure (111), and the first valve stem mounting platform (113) and the second valve stem mounting platform (122) are respectively provided with a first mounting hole (114) and a second mounting hole (123), and the first mounting hole (114) and the second mounting hole (123) open in opposite directions.

9. The valve flap according to any one of claims 1 to 8, characterized in that: The sealing structure (2) further comprises a fixed baffle (3), wherein the fixed baffle (3) is arranged on a side of the second sealing member (22) facing away from the first sealing member (21), and a plurality of connecting holes (41) are uniformly distributed in a circumferential direction of the valve flap body (1), the first sealing member (21), the second sealing member (22) and the fixed baffle (3), and fasteners (42) are installed in the connecting holes (41).

10. A temperature control valve, comprising a valve disc, characterized in that: The valve flap is the valve flap according to any one of claims 1 to 9.

11. An air conditioner comprising a temperature control valve, characterized in that: The temperature control valve is the temperature control valve according to claim 10.

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