Safety valve and electric water heater
By using a plastic valve body in the water heater safety valve and optimizing the step surface design of the pipe section, the high cost problem of metal safety valves is solved, achieving the effect of reducing costs and improving corrosion resistance and structural strength.
Patent Information
- Application Number
- CN202422893819.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing water heater safety valves are usually made of metal, which results in high production costs and insufficient corrosion resistance.
The plastic valve body design is adopted. By setting the difference in the step surface distance between the first pipe section and the second pipe section, the pipe wall thickness at the connection is increased, the structural strength and corrosion resistance are improved, and the production cost is reduced.
It effectively reduces the production cost of the safety valve, improves the structural strength and corrosion resistance of the plastic valve body, extends the service life, and ensures the stability and safety of the safety valve under high-pressure environment.
Smart Images
Figure CN223434808U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hot water supply equipment technical field especially relates to a safety valve and electric water heater. BACKGROUND
[0002] As a common part of the water storage type electric water heater, the safety valve plays a vital role. In the cold water inlet stage of the water heater, the safety valve can ensure the one-way flow of cold water and effectively avoid the occurrence of hot water backflow. When the water heater is in the heating state, the safety valve can timely release the pressure of the inner container to prevent the inner container from being damaged due to excessive pressure.
[0003] However, the safety valve of the water heater on the market is usually made of metal, resulting in high production cost of the safety valve. INVENTION CONTENTS
[0004] The first technical problem solved by the utility model is to provide a safety valve which effectively solves the problem of high cost of the existing safety valve. By setting the distance from the first step surface to the water outlet end greater than the distance from the second step surface to the water outlet end, the thickness of the pipe wall at the connection between the first pipe segment and the second pipe segment is increased, which can effectively improve the deformation resistance of the connection, effectively prevent local deformation or rupture, thereby improving the overall structural strength of the plastic valve body, and fully exerting the cost and corrosion resistance advantages of the plastic valve body while meeting the safety performance requirements.
[0005] The second technical problem solved by the utility model is to provide an electric water heater which effectively solves the problem of high cost of the existing safety valve. By setting the distance from the first step surface to the water outlet end greater than the distance from the second step surface to the water outlet end, the thickness of the pipe wall at the connection between the first pipe segment and the second pipe segment is increased, which can effectively improve the deformation resistance of the connection, effectively prevent local deformation or rupture, thereby improving the overall structural strength of the plastic valve body, and fully exerting the cost and corrosion resistance advantages of the plastic valve body while meeting the safety performance requirements.
[0006] The first technical problem is solved by the following technical scheme:
[0007] A safety valve, comprising:
[0008] A plastic valve body comprising a water inlet pipe and a pressure relief pipe connected in communication, the water inlet pipe comprising a first pipe segment and a second pipe segment connected in series, the outer diameter of the first pipe segment being greater than the outer diameter of the second pipe segment, the outer wall connection between the first pipe segment and the second pipe segment forming a first step surface, the end of the first pipe segment forming a water outlet end, the end of the second pipe segment forming a water inlet end, the first pipe segment being provided with a second step surface for mounting a water inlet valve assembly, the distance from the first step surface to the water outlet end being greater than the distance from the second step surface to the water outlet end.
[0009] The safety valve has the beneficial effects that, compared with the background art:
[0010] Since the safety valve adopts a plastic valve body, the cost of the plastic material is relatively low, and the forming process of the plastic is relatively simple and efficient compared with the metal processing process, thereby reducing the production cost.
[0011] In addition, the first pipe section is used to be connected with the water inlet pipeline of the electric water heater, and since the outer diameter of the first pipe section is large, when the first pipe section bears external pressure such as pressure transmitted from the inner liner of the electric water heater and water flow impact pressure, it can provide stronger resistance to bending deformation and improve the stability of the connection.
[0012] In one of the embodiments, the distance from the first step surface to the water outlet end is H1, and the distance from the second step surface to the water outlet end is H2, and H1-H2>3mm is satisfied.
[0013] In one of the embodiments, the thickness of the pipe wall of the water inlet pipe is t, and 2.5mm≤t≤3.5mm is satisfied.
[0014] In one of the embodiments, the distance H1 from the first step surface to the water outlet end satisfies 17mm≤H1≤21mm.
[0015] In one of the embodiments, an internal thread extending to the water outlet end is arranged in the first pipe section, and along the axial direction of the water inlet pipe, the height of the internal thread is h, and 13mm≤h≤17mm is satisfied.
[0016] In one of the embodiments, a reinforcing rib is further arranged, the water inlet pipe and the pressure relief pipe are arranged at an angle, and the reinforcing rib is arranged at the connection between the water inlet pipe and the pressure relief pipe and connected with the outer walls of the first pipe section and the pressure relief pipe respectively.
[0017] In one of the embodiments, the reinforcing rib is in a sheet structure, and the thickness of the reinforcing rib is a, and 2.0mm≤a≤3.5mm is satisfied.
[0018] In one of the embodiments, the distance from the top end of the connection between the reinforcing rib and the first pipe section to the water outlet end is b, satisfying b≤5mm.
[0019] In one of the embodiments, the first pipe section, the second pipe section and the pressure relief pipe are integrally injection molded.
[0020] The second technical problem is solved by the following technical solution:
[0021] An electric water heater comprises:
[0022] A water heater body is provided with a water inlet pipe;
[0023] A safety valve, the water outlet end of the first pipe section is communicated with the water inlet pipe.
[0024] Compared with the background art, the electric water heater has the beneficial effects that when the pressure in the inner container of the electric water heater is too large, the safety valve can timely release the pressure in the inner container of the electric water heater, effectively preventing the inner container from being damaged due to excessively high pressure. At the same time, since the safety valve adopts a plastic valve body, the cost of the plastic material is relatively low, and the forming process of the plastic is relatively simple and efficient compared with the metal processing process, which can reduce the production cost, and through reasonable structural design, the structural strength of the plastic valve body meets the use requirements. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0026] Figure 1 It is a front view of a safety valve of the embodiment of the present application.
[0027] Figure 2 It is a sectional view of the safety valve shown in the figure. Figure 1
[0028] Figure 3 It is a structural schematic view of another safety valve of the embodiment of the present application.
[0029] Figure 4 It is a front view of the safety valve shown in the figure. Figure 1
[0030] Explanation of reference signs:
[0031] 1. Plastic valve body; 101. Water inlet pipe; 1011. First pipe section; 10111. Water outlet; 10112. Second step surface; 10113. Internal thread; 1012. Second pipe section; 10121. Water inlet; 102. Pressure relief pipe; 1013. First step surface; 2. Water inlet valve assembly; 3. Reinforcement ribs. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0033] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.
[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0036] In the related art, the safety valves of water heaters currently on the market are usually made of metal materials, resulting in high production costs of the safety valves.
[0037] In order to solve the above technical problems, the following Figures 1 to 4 , describing the embodiments of the present utility model.
[0038] According to an embodiment of the present invention, on the one hand, Figures 1 to 4 As shown, a safety valve is provided, comprising a plastic valve body 1.
[0039] Specifically, if Figures 1 to 3 As shown, the plastic valve body 1 includes a water inlet pipe 101 and a pressure relief pipe 102, wherein the water inlet pipe 101 and the pressure relief pipe 102 are connected. The water inlet pipe 101 includes a first pipe section 1011 and a second pipe section 1012. The outer diameter of the first pipe section 1011 is larger than the outer diameter of the second pipe section 1012. The outer wall connection between the first pipe section 1011 and the second pipe section 1012 forms a first step surface 1013.
[0040] Specifically, if Figures 1 to 3 As shown, the end of the first pipe section 1011 forms a water outlet 10111, and the end of the second pipe forms a water inlet 10121. A second step surface 10112 is provided on the inner wall of the first pipe section 1011, and the second step surface 10112 is used to install the water inlet valve assembly 2.
[0041] Specifically, if Figure 2 As shown, the distance from the first step surface 1013 to the water outlet end 10111 is greater than the distance from the second step surface 10112 to the water outlet end 10111.
[0042] This safety valve utilizes a plastic valve body 1, which is relatively inexpensive. Furthermore, the plastic molding process is simpler and more efficient than metal processing, reducing production costs. The plastic valve body 1 also exhibits superior corrosion resistance compared to metal valve bodies, making it less susceptible to rust and corrosion in environments exposed to water for extended periods, thereby extending the life of the safety valve.
[0043] In addition, the first pipe section 1011 is used to connect to the water inlet pipe of the electric water heater. Since the outer diameter of the first pipe section 1011 is large, when the first pipe section 1011 is subjected to external pressure, such as the pressure transmitted from the inner tank of the electric water heater and the impact pressure of the water flow, it can provide a stronger ability to resist bending deformation and improve the stability of the connection. Secondly, when the safety valve is installed on the water inlet pipe of the electric water heater, there is an extrusion pressure on the second step surface 10112, and there are higher requirements for the pipe wall strength near the second step surface 10112. The first step surface 1013 is formed at the connection between the outer walls of the first pipe section 1011 and the second pipe section 1012, and the distance from the first step surface 1013 to the water outlet end 10111 is greater than the distance from the second step surface 10112 to the water outlet end 10111, which increases the pipe wall thickness at the connection between the first pipe section 1011 and the second pipe section 1012, can effectively improve the ability of the connection to resist deformation, effectively prevent local excessive deformation or rupture, thereby improving the overall structural strength of the plastic valve body 1, so that the plastic valve body 1 can fully give play to its cost and corrosion resistance advantages while meeting the safety performance requirements.
[0044] Specifically, the first pipe segment 1011 and the second pipe segment 1012 can be coaxially arranged or connected at an angle. In the embodiment of the present application, there is no specific limitation on the arrangement of the first pipe segment 1011 and the second pipe segment 1012.
[0045] Specifically, the outer wall of the first pipe section 1011 can be configured to be in the shape of a hexagonal nut to facilitate connection of the first pipe section 1011 to the water inlet pipe.
[0046] Specifically, the water inlet valve assembly 2 can be an existing water inlet valve structure such as a valve stem, a one-way valve spring, etc. In the embodiment of the present application, the water inlet valve assembly 2 is not specifically limited.
[0047] In one embodiment, Figure 2 As shown, the distance from the first step surface 1013 to the water outlet end 10111 is H1, and the distance from the second step surface 10112 to the water outlet end 10111 is H2, satisfying H1-H2>3mm.
[0048] When H1-H2>3mm, a thicker tube wall with sufficient height is formed at the connection between the first tube segment 1011 and the second tube segment 1012, so that the connection between the first tube segment 1011 and the second tube segment 1012 is strong enough, ensuring that the plastic valve body 1 has sufficient strength.
[0049] When subjected to external pressure such as the water inlet valve assembly 2, the thicker pipe wall can provide a larger bearing area, so that the stress can be more widely distributed on the plastic valve body 1, rather than concentrated in a local area, thereby improving the bearing capacity of the first pipe section 1011 and the second pipe section 1012 at the connection point, effectively preventing rupture or deformation caused by excessive local stress, thereby ensuring that the overall structural strength of the plastic valve body 1 meets the use requirements of the safety valve under various working conditions.
[0050] If H1-H2 is less than 3 mm, the height of the thick tube wall at the connection between the first tube segment 1011 and the second tube segment 1012 is relatively small, which may easily cause deformation or rupture of the connection between the first tube segment 1011 and the second tube segment 1012.
[0051] In order to see the difference between H1 and H2 more clearly, Figure 2 As shown, L in the figure is the distance after subtracting the two.
[0052] In one embodiment, Figure 2 As shown, the wall thickness of the water inlet pipe 101 is t, which satisfies 2.5 mm ≤ t ≤ 3.5 mm.
[0053] When the wall thickness t of the water inlet pipe 101 satisfies the condition of 2.5mm≤t≤3.5mm, it provides the water inlet pipe 101 with suitable strength to withstand various pressures, ensuring structural stability within the common water pressure range and guaranteeing the normal operation of the safety valve under pressure. Furthermore, the wall thickness of the appropriate thickness can better absorb and disperse external impact forces, improving the impact resistance of the safety valve's overall structure.
[0054] If the wall thickness is too thick, unnecessary material costs will be increased, while if the wall thickness is too thin, higher quality or specially formulated plastic materials may be required to compensate for the lack of strength, which will also increase costs.
[0055] It should be noted that the wall thickness t of the water inlet pipe 101 refers to the wall thickness of the first pipe section 1011 , the wall thickness of the second pipe section 1012 , and the wall thickness at the connection between the first pipe section 1011 and the second pipe section 1012 .
[0056] In one embodiment, Figure 2 As shown, the distance H1 from the first step surface 1013 to the water outlet end 10111 satisfies 17 mm ≤ H1 ≤ 21 mm.
[0057] The distance H1 from the first step surface 1013 to the water outlet end 10111 can be understood as the height of the first pipe section 1011 being H1. Since the outer diameter of the first pipe section 1011 is relatively large and the height of the first pipe section 1011 is limited to an appropriate range, the ability of the first pipe section 1011 to resist deformation such as bending, stretching and compression can be effectively improved, and rupture or failure caused by excessive local stress can be effectively prevented, thereby enhancing the structural strength and stability of the entire plastic valve body 1.
[0058] If the H1 value is too small, it may be necessary to increase the material's strength grade or wall thickness to meet the strength requirements, which will increase the material cost; if the H1 value is too large, it will not only waste materials, but may also cause stress concentration and other problems due to unreasonable structural dimensions, reducing the actual utilization efficiency of the material.
[0059] In one embodiment, Figure 2 As shown, the first pipe section 1011 is provided with an internal thread 10113 extending to the water outlet end 10111 . Along the axial direction of the water inlet pipe 101 , the height of the internal thread 10113 is h, which satisfies 13 mm ≤ h ≤ 17 mm.
[0060] When the height h of the internal thread 10113 satisfies 13mm ≤ h ≤ 17mm, sufficient thread engagement is provided for connection to the water inlet pipe of the electric water heater. During installation and use of the electric water heater, the safety valve must be tightly connected to the water inlet pipe to ensure smooth water flow and no leaks. A longer engagement length of the internal thread 10113 provides greater contact area and friction, ensuring a reliable and stable connection, reducing the risk of leakage due to loose connections, and improving the safety of the entire electric water heater system.
[0061] At the same time, the appropriate internal thread 10113 height helps evenly distribute stress generated during connection. When tightening the safety valve, the internal thread 10113 is subjected to torque and axial forces. A height of 13mm to 17mm distributes stress over a longer thread segment, avoiding stress concentration on a few threads. This effectively prevents damage to the threads due to excessive force, extending the service life of the internal thread 10113 and ensuring a reliable connection over extended use.
[0062] If the height h of the internal thread 10113 is less than 13 mm, the thread engagement length when connected to the water inlet pipe is insufficient, which can easily lead to an unstable connection between the safety valve and the water inlet pipe. If the height h of the internal thread 10113 exceeds 17 mm, it will cause material waste.
[0063] In one embodiment, Figure 3 and Figure 4 As shown, it also includes a reinforcing rib 3. The water inlet pipe 101 and the pressure relief pipe 102 are set at an angle. The reinforcing rib 3 is set at the connection between the water inlet pipe 101 and the pressure relief pipe 102, and the reinforcing rib 3 is respectively connected to the first pipe section 1011 and the outer wall of the pressure relief pipe 102.
[0064] Because the water inlet pipe 101 and the pressure relief pipe 102 are arranged at an angle, the reinforcement rib 3 is positioned at the connection between the water inlet pipe 101 and the pressure relief pipe 102. This effectively disperses stress and prevents excessive stress concentration near the connection point, which can cause localized deformation or rupture. Furthermore, because the reinforcement rib 3 is connected to the outer wall of the first pipe section 1011 and the pressure relief pipe 102, respectively, a stable triangular structure is formed. When the plastic valve body 1 is subjected to external pressure, the relative displacement and deformation of the water inlet pipe 101 and the pressure relief pipe 102 are effectively limited, thereby enhancing the deformation resistance of the water inlet pipe 101 and the pressure relief pipe 102.
[0065] The provision of the reinforcing rib 3 improves the stability of the connection structure between the water inlet pipe 101 and the pressure relief pipe 102, so that the safety valve can work more stably when facing various complex working conditions.
[0066] Specifically, the water inlet pipe 101 and the pressure relief pipe 102 can be set vertically, or can be set at other angles according to needs. In the embodiment of the present application, there is no specific restriction on the angle between the water inlet pipe 101 and the pressure relief pipe 102.
[0067] Specifically, the reinforcing rib 3 may be a sheet-like structure or a strip-like structure, etc. In the embodiment of the present application, there is no specific limitation on the shape of the reinforcing rib 3 .
[0068] In one embodiment, Figure 3 and Figure 4 The reinforcing rib 3 is a sheet-like structure, and the thickness of the reinforcing rib 3 is a (not shown in the figure), which satisfies 2.0mm≤a≤3.5mm.
[0069] When the thickness a of the reinforcing rib 3 satisfies 2.0 mm ≤ a ≤ 3.5 mm, stress can be effectively dispersed at the connection between the water inlet pipe 101 and the pressure relief pipe 102. Within this thickness range, the sheet-like reinforcing rib 3 has sufficient strength to withstand and transmit stress, thereby enhancing the structural strength of the plastic valve body 1.
[0070] If the thickness of the reinforcing rib 3 is too thin, the strength of the material may not be fully exerted and the reinforcing effect may not be effectively played; and if the thickness of the reinforcing rib 3 is too thick, it may cause uneven stress distribution inside the material and increase material cost.
[0071] In one embodiment, Figure 4 As shown, the distance from the top of the connection between the reinforcing rib 3 and the first pipe section 1011 to the water outlet 10111 is b, and b≤5mm.
[0072] When b≤5mm, during the mold molding process, the flow and filling of the plastic melt in the mold cavity can be made more uniform, ensuring that the wall thickness of the plastic valve body 1 changes more evenly, reducing internal shrinkage, and reducing internal injection defects at the position of the internal thread 10113, thereby increasing the strength of the internal thread 10113.
[0073] In one embodiment, Figures 1 to 4 As shown, the first pipe section 1011 , the second pipe section 1012 and the pressure relief pipe 102 are integrally injection molded.
[0074] The one-piece injection molding ensures that there is no connection gap between the first pipe section 1011 , the second pipe section 1012 and the pressure relief pipe 102 , thereby improving the overall strength and sealing performance of the plastic valve body 1 .
[0075] During the injection molding process, the first pipe section 1011, the second pipe section 1012 and the pressure relief pipe 102 are molded as a whole, and the plastic valve body 1 can be manufactured in one mold, thereby improving production efficiency and reducing production costs.
[0076] According to an embodiment of the present invention, on the other hand, Figures 1 to 4 As shown, an electric water heater is also provided, comprising a water heater body and a safety valve.
[0077] Specifically, the water heater body is provided with a water inlet pipe (not shown in the figure).
[0078] Specifically, the water outlet end 10111 of the first pipe section 1011 is connected to the water inlet pipe.
[0079] When the pressure inside the electric water heater tank is too high, the safety valve can promptly release the pressure inside the electric water heater tank, effectively preventing damage to the tank caused by excessive pressure. At the same time, because the safety valve uses a plastic valve body 1, the plastic material cost is relatively low, and the plastic molding process is simpler and more efficient than the metal processing process, which can reduce production costs. Through reasonable structural design, the structural strength of the plastic valve body is ensured to meet the use requirements.
[0080] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0081] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.
Claims
1. A safety valve, characterized in that: include: A plastic valve body (1) comprises a water inlet pipe (101) and a pressure relief pipe (102) which are arranged in communication with each other. The water inlet pipe (101) comprises a first pipe section (1011) and a second pipe section (1012) which are connected to each other. The outer diameter of the first pipe section (1011) is greater than the outer diameter of the second pipe section (1012). A first step surface (1013) is formed at the connection between the outer walls of the first pipe section (1011) and the second pipe section (1012). The end of the first pipe section (1011) forms a water outlet end (10111), and the end of the second pipe section (1012) forms a water inlet end (10121). A second step surface (10112) for mounting a water inlet valve assembly (2) is provided in the first pipe section (1011). The distance from the first step surface (1013) to the water outlet end (10111) is greater than the distance from the second step surface (10112) to the water outlet end (10111).
2. The safety valve according to claim 1, characterized in that: The distance from the first step surface (1013) to the water outlet end (10111) is H1, and the distance from the second step surface (10112) to the water outlet end (10111) is H2, satisfying H1-H2>3mm.
3. The safety valve according to claim 1, characterized in that: The wall thickness of the water inlet pipe (101) is t, which satisfies 2.5 mm ≤ t ≤ 3.5 mm.
4. The safety valve according to claim 1, characterized in that: The distance H1 from the first step surface (1013) to the water outlet end (10111) satisfies 17 mm ≤ H1 ≤ 21 mm.
5. The safety valve according to claim 4, characterized in that: The first pipe section (1011) is provided with an internal thread (10113) extending to the water outlet end (10111), and along the axial direction of the water inlet pipe (101), the height of the internal thread (10113) is h, which satisfies 13mm≤h≤17mm.
6. The safety valve according to any one of claims 1 to 5, characterized in that: It also includes a reinforcing rib (3), the water inlet pipe (101) and the pressure relief pipe (102) are arranged at an angle, and the reinforcing rib (3) is arranged at the connection between the water inlet pipe (101) and the pressure relief pipe (102) and is respectively connected to the first pipe section (1011) and the outer wall of the pressure relief pipe (102).
7. The safety valve according to claim 6, characterized in that: The reinforcing rib (3) is a sheet-like structure, and the thickness of the reinforcing rib (3) is a, satisfying 2.0 mm ≤ a ≤ 3.5 mm.
8. The safety valve according to claim 6, characterized in that: The distance from the top of the connection between the reinforcing rib (3) and the first pipe section (1011) to the water outlet (10111) is b, and b≤5mm.
9. The safety valve according to any one of claims 1 to 5, characterized in that: The first pipe section (1011), the second pipe section (1012) and the pressure relief pipe (102) are integrally injection-molded.
10. An electric water heater, characterized in that: include: The water heater body is provided with a water inlet pipe; The safety valve according to any one of claims 1 to 9, wherein the water outlet end (10111) of the first pipe section (1011) is connected to the water inlet pipe.