Valve clack, temperature control valve and air conditioner

Abstract

The invention 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 invention 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 development of air-conditioning technology, the application occasions of air-conditioning have been unprecedentedly expanded, such as train air-conditioning, shipboard air-conditioning and air-borne air-conditioning. Different from the "refrigerant + four-way valve" refrigeration scheme of conventional air-conditioning, air-borne air-conditioning adopts the "air cycle machine + temperature control valve" refrigeration scheme to achieve air conditioning. Therefore, air-borne air-conditioning is also called environmental control system. The temperature control valve is the core component of the temperature control of the environmental control system. The medium used is high-temperature and high-pressure engine bleed air, usually with a temperature above 250°C. High-precision and high-reliability temperature control valves are the basis for the stable operation of the environmental control system. As airborne parts, lightweight structure and convenient maintenance are also crucial.

[0003] There are two types of existing valve flap sealing systems with similar functions. One type simply utilizes the elastic deformation of metal springs to clamp the metal springs into the valve flap sealing groove and achieve the sealing between the valve flap and the valve body through the elasticity of the metal springs. This type of spring is extremely inconvenient to install and remove, and it is easy to cause irreversible deformation of the spring, affecting the sealing effect. The other type is to simply use the brittleness and self-lubricating properties of flexible graphite sealing gaskets to achieve the sealing effect. This sealing method affects the sealing effect due to the wear of the graphite sealing gasket. Summary of the invention

[0004] The invention 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 present invention provides a valve flap, which includes a valve flap body and a sealing structure;

[0006] The valve flap 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, and the radial outer edges of the first seal and the second seal extend toward the radial outer edges 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 seal, the first seal, the second seal and the third seal are sequentially mounted on the first end face, and the third seal is made of graphite material.

[0009] In some embodiments, at least two second seals are disposed between the first seal and the third seal.

[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 surface, 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 reinforcing ribs are arranged 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 a projection surface, the two reinforcing ribs are symmetrically arranged about the radial geometric center line of the second valve stem mounting platform, and an angle is formed 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, the first end surface of the first petal body is provided with a boss structure by providing a groove, and the boss structure is provided with a weight-reducing groove.

[0014] In some embodiments, a first valve stem mounting platform is disposed 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 also 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 evenly distributed in the circumference of 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 valve flap, temperature control valve and air conditioner provided by the present invention 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 later 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. Considering 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 sealing failure due to thermal expansion.

[0020] Secondly, the first seal and the second seal of the present invention are made of different materials. The graphite material is suitable for use in high temperature and high pressure environments due to its high temperature resistance, corrosion resistance, good self-lubrication and low friction coefficient. The aluminum foil material has good ductility and easy molding characteristics. By using the first seal of flexible graphite material and the second seal of aluminum foil material to combine the sealing system, the material has a wide temperature resistance range and complementary mechanical properties, which can solve the problem of large leakage caused by low precision of the inner surface of the temperature control valve body, provide the temperature control valve control accuracy, and enable the valve disc to maintain good sealing performance in the high temperature and high pressure engine bleed medium. Compared with the sealing method of simply using metal springs or flexible graphite sealing gaskets in the prior art, the double-layer sealing structure of the present invention can, without affecting the sealing performance, make the seal not prone to irreversible deformation during its service life due to the high wear resistance of graphite material and the ductility of aluminum foil. Moreover, compared with traditional metal seals, graphite materials and aluminum foil materials can provide lighter weight, which helps to achieve lightweight structure of airborne parts, 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 implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 An exploded view of a valve flap according to an embodiment of the present invention;

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

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

[0025] Figure 4is a schematic diagram of a first petal according to an embodiment of the present invention;

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

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

[0028] Figure 7 It is a schematic diagram of the water quality level line of the valve flap body of an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of a sealing structure according to an embodiment of the present invention

[0030] Figures: 1-valve flap body; 11-first flap body; 111-boss structure; 112-weight reduction groove; 113-first valve stem mounting platform; 114-first mounting hole; 12-second flap 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means 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 creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, 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 devices or elements 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 contours 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 here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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 terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0035] See also Figures 1 to 3 As shown, according to an embodiment of the present invention, a valve flap is provided, including 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 includes a first seal 21 and a second seal 22, and the first seal 21 and the second seal 22 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, the first sealing member 21 is first installed on the first end face 101, and then the second sealing member 22 is installed on the first sealing member 21. When the valve flap is in an open state, high temperature and high pressure air will flow through the valve flap body 1, and the valve flap adjusts the circulating air. The valve flap controls the flow of the medium through the sealing structure 2 on its end face to ensure that the medium will 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, the general insert-type sealing gasket is to insert half of the sealing ring alternately. Due to the limited width of the sealing groove, during the actual operation, the sealing ring is damaged due to pressure or scratches by burrs in the slot, affecting the sealing effect. The sealing structure 2 of this embodiment is arranged 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 later maintenance and replacement. In addition, the sealing structure 2 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. Considering the influence of thermal expansion, the sealing structure 2 is arranged 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 seal 21 and the second seal 22 of this embodiment are made of different materials. The graphite material is suitable for use in high temperature and high pressure environments due to its high temperature resistance, corrosion resistance, good self-lubrication and low friction coefficient. The aluminum foil material has good ductility and easy molding characteristics. By using the first seal 21 of flexible graphite material and the second seal 22 of aluminum foil material to combine the sealing system, the material has a wide temperature resistance range and complementary mechanical properties, which can solve the problem of large leakage caused by low precision of the inner surface of the temperature control valve body, provide temperature control valve control accuracy, and enable the valve disc to maintain good sealing performance in the high temperature and high pressure engine bleed medium. Compared with the sealing method of simply using metal springs or flexible graphite sealing gaskets in the prior art, the double-layer sealing structure 2 of this embodiment can, without affecting the sealing performance, make the seal less prone to irreversible deformation during its service life due to the high wear resistance of graphite material and the ductility of aluminum foil. Moreover, compared with traditional metal seals, graphite materials and aluminum foil materials can provide lighter weight, which helps to achieve lightweight structure of airborne parts, 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 surface 101 . The third sealing member 23 is made of graphite material.

[0041] In this embodiment, the material of the first seal 21 and the third seal 23 is graphite. Graphite itself has good self-lubricity, can reduce friction loss, and extend the service life of the sealing ring. The graphite material has high compression deformation and rebound ability. This property enables the seal to rebound effectively after being subjected to pressure and maintain the sealing effect. The graphite material has a low thermal expansion coefficient, which helps to maintain the stability of the sealing structure 2 under temperature changes. The third seal 23 can better control the deformation caused by thermal expansion or thermal stress and maintain the sealing performance. By setting 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, and the sealing effect is better. The setting of the three-layer seal can maintain a uniform temperature distribution and stress distribution, avoiding sealing failure caused by local overheating or stress concentration. The setting of the three-layer seal in 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 best way of this embodiment is that the first seal 21 and the second seal 22 are made of graphite material, and the second seal 22 is made of aluminum foil. In other embodiments, according to the structural implementation and use requirements of the valve flap body 1, the installation order and quantity of the seals can be adjusted. For example, only the second seal 22 and the third seal 23 are provided, and the second seal 22 and the third seal 23 are sequentially installed on the valve flap body 1. The seals of different materials used in the sealing structure 2 can complement each other in 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 arranged between the first sealing member 21 and the third sealing member 23 .

[0044] Specifically, the valve flap sealing combination 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 the leakage of the medium in a high temperature and high pressure environment, and can also serve as a redundant system. Even if one of the seals fails, the other seals can still maintain the sealing effect, thereby 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 simplifying the sealing requirements to the greatest extent. A plurality of second seals 22 are arranged between the first seal 21 and the third seal 23, which can improve the 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 environmental control system can work stably under various working 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 is not too large, thereby reducing the overall weight of the valve flap.

[0046] It is worth noting that, in this embodiment, the first to third seals 21 to 23 have various structural forms, and the seals can be sealing rings, sealing gaskets, and sealing plates under certain sealing requirements. The radial outer edges of the first to third seals 21 to 23 extend toward the radial outer edge of the first end surface 101 of the valve flap body 1. The best way is that the diameter of the first to third seals 21 to 23 is slightly larger than the diameter of the valve flap body 1. This arrangement can provide a better sealing effect and reduce the wear of 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 opened 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, and 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 set in an annular shape, and the annular seal can be more evenly distributed on the first end face 101 of the valve disc, so that when the valve disc is closed, the seal can evenly bear the pressure from the medium, reducing the wear or damage of the seal caused by excessive local pressure. The annular seal can better adapt to the thermal expansion caused by temperature changes. The design of the groove 103 allows the seal to have a certain expansion space when heated, avoiding the sealing performance being affected by thermal expansion. In addition, the annular seal can reduce stress concentration points because the stress can be more evenly distributed on the entire sealing ring instead of concentrating on a certain point. The seal is installed in the groove 103, which can be easily installed, replaced and maintained. The groove 103 provides a position for fixing the seal to ensure 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, so that the valve disc can maintain a good working condition even in a high temperature and high pressure environment.

[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 away from the second flap body 12 is the first end face 101, the end face of the second flap body 12 away from the first flap body 11 is the second end face 102, and a reinforcing rib 121 is arranged 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 thin, the reinforcing ribs 121 can effectively improve its bearing capacity and prevent deformation caused by pressure or temperature changes. Moreover, as a structural element, the reinforcing ribs 121 can improve the stability of the entire valve flap, especially when working in a high temperature and high pressure environment, the reinforcing ribs 121 help maintain the structural integrity of the valve flap, and can also improve the stress distribution of the valve flap body 1, especially in the thinner part of the second flap body 12, the reinforcing ribs 121 can reduce stress concentration and avoid material fatigue or fracture caused by excessive local stress.

[0051] As a specific implementation, the cross-sections of the first petal body 11 and the second petal body 12 are both circular, and the diameters of the first petal body 11 and the second petal body 12 are the same. The reinforcing rib 121 can be integrally formed with the second petal body 12, or can be welded or fixed to the second petal body 12 as an independent component, which is convenient for subsequent maintenance and replacement.

[0052] See also Figures 1 to 6As shown, 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. Taking the second end surface 102 as a 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 there is an angle 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 setting the reinforcing ribs 121 at a specific angle, the force transmitted through the valve disc can be more reasonably distributed, stress concentration can be reduced, and material fatigue or fracture caused by local overload can be avoided. The symmetrical layout and specific angle setting of the reinforcing ribs 121 help to better align and position the second valve stem mounting platform 122 during installation and maintenance, simplifying the assembly process. Secondly, under the premise that the second valve stem mounting platform 122 can improve the structural strength, the reinforcing ribs 121 set at a specific angle can improve the ability of the valve disc body 1 to resist torsional force and prevent the valve disc from being deformed or damaged when subjected to rotational force. The angle and symmetrical layout of the reinforcing ribs 121 help to more effectively transmit the force applied by the valve stem, ensure uniform distribution of force, and reduce local pressure on the valve disc body 1. Moreover, the reinforcing ribs 121, as a bending-resistant component, improve the performance of the valve disc when subjected to bending moment. In particular, when the valve disc is opened and closed, the reinforcing ribs 121 can reduce bending deformation caused by pressure or temperature changes.

[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 be used as a reinforcement part to increase the local rigidity of the valve disc body 1, especially when subjected to high temperature and high pressure medium pressure, the boss can provide additional support and reduce the risk of deformation. By opening a weight reduction groove 112 on the boss structure 111, the weight of the valve disc can be reduced without affecting the structural strength, and the energy efficiency and performance can be improved by reducing the weight. Since the first seal 21 to the third seal 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 opened 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, the weight reduction groove 112 is opened on the boss structure 111, which can reduce the weight of the valve disc while ensuring sufficient strength and rigidity, thereby achieving lightweight.

[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, and 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 method of connecting the valve stem to 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 are in 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 implementation, the first mounting hole 114 and the second mounting hole 123 are in an oblong shape, 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 walls of the mounting holes are also provided with holes, which are 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, and a plurality of connecting holes 41 are evenly distributed in the circumference 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.

[0061] Specifically, when the sealing structure 2 includes the third seal 23, the fixed baffle 3 is arranged on the side of the third seal 23 away from the second seal 22, and the third seal 23 is provided with a connection hole 41, which is combined with the multiple connection holes 41 uniformly distributed in the circumferential direction of the valve flap body 1, the first seal 21, the second seal 22 and the fixed baffle 3. Through the installation of the fastener 42, the integrity and stability of the entire valve structure are enhanced. The multiple connection holes 41 allow the fastener 42 to be used for fastening in different configurations, which can be adjusted according to specific application requirements and operating conditions to achieve the best fastening effect. By using the fastener 42 to tightly connect the various components, the reliability and durability of the valve in harsh environments such as high pressure and high temperature can be improved, and the maintenance cost and potential failure risk can be reduced.

[0062] As a specific implementation, the fastener 42 may 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, after the valve flap is applied to the temperature control valve, the materials of the first seal 21 and the third seal 23 are graphite. Graphite itself has good self-lubrication, can reduce friction loss, and extend the service life of the sealing ring. The graphite material has high compression deformation and rebound ability. This property enables the seal to rebound effectively after being subjected to pressure and maintain the sealing effect. The graphite material has a low thermal expansion coefficient, which helps to maintain the stability of the sealing structure 2 under temperature changes. The third seal 23 can better control the deformation caused by thermal expansion or thermal stress and maintain the sealing performance. By setting 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, and the sealing effect is better. The setting of the three-layer seal can maintain a uniform temperature distribution and stress distribution, avoiding sealing failure caused by local overheating or stress concentration. The setting of the three-layer seal in this embodiment can complement each other, increase the contact area and effect of the sealing surface, and thus enhance the overall sealing performance.

[0065] An air conditioner comprises a temperature control valve, wherein the temperature control valve 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 substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope 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 surface (101), and radial outer edges of the first sealing member (21) and the second sealing member (22) extend toward radial outer edges of the first end surface (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 surface (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 arranged 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 in shape, and a groove (103) is provided in the valve flap 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) which are connected to each other, the thickness of the second flap body (12) is smaller 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), and the two reinforcing ribs (121) are symmetrically arranged about the radial geometric center line of the second valve stem mounting platform (122) with the second end surface (102) as a projection surface, 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 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).

8. The valve flap according to claim 7, characterized in that: The boss structure (111) is provided with a first valve stem mounting platform (113), 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) have openings facing 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 evenly 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 flap, 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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