Safety valve and water heater

Abstract

The utility model relates to a safety valve and a water heater, the safety valve comprises a valve body, a valve core assembly and a water outlet pressure regulating seat, the valve body is provided with a water supply channel, and a water outlet and a water supply port which are communicated with the water supply channel; the valve element assembly is arranged in the water supply channel and can move along the axis of the water supply channel so that the water supply opening can communicate with the water supply channel. The water outlet pressure regulating seat is arranged at the end, close to the water outlet, in the water supply channel and comprises a pressure regulating seat body and a buffering structure, a water outlet hole penetrating through the pressure regulating seat body in the axial direction of the pressure regulating seat body is formed in the pressure regulating seat body, and the buffering structure is arranged on the side, facing the valve element assembly, of the pressure regulating seat body and right faces the water outlet hole. And a water outlet channel communicated with the water outlet hole is arranged between the buffer structure and the pressure regulating seat body. The valve element assembly can be prevented from being directly impacted by water flow, and then the reliability of the safety valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a safety valve and a water heater. Background Art

[0002] The water heater safety valve is a safety protection device for the water heater. Its main working principle is to open the valve through pressure control to release the internal pressure of the water heater. At present, the safety valve uses springs and other mechanical components as the control mechanism. The middle position of the water outlet pressure regulating seat structure is hollow, in order to center it with the internal leakage pull rod valve core. When the pressure in the water heater tank is too high, it will flow directly into the inner cavity from the hollow core of the water outlet pressure regulating seat, directly affecting the internal leakage pull rod. When the pressure is too high, there is a probability that the spring will be unevenly stressed. Once there is a problem with the spring in the inner valve cavity, it will cause the sealing ring at the water supply to fail, and then cause the entire structure to fail. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a safety valve which can initially reduce the pressure of water flowing out of the inner tank of a water heater, thereby reducing the pressure on the valve core component, thereby improving the reliability and stability of the safety valve.

[0004] A safety valve, comprising:

[0005] A valve body, configured with a water supply channel, and a water outlet and a water supply port communicated with the water supply channel;

[0006] a valve core assembly disposed in the water supply channel, the valve core assembly being movable along the axis of the water supply channel so that the water supply port is connected to the water supply channel, the valve core assembly being configured with a first pressure relief port, the first pressure relief port being able to be opened to be connected to the water supply port;

[0007] A water outlet pressure regulating seat is arranged at one end of the water supply channel close to the water outlet, and the water outlet pressure regulating seat includes a pressure regulating seat body and a buffer structure. The pressure regulating seat body is provided with a water outlet hole extending through the pressure regulating seat body along its axial direction. The buffer structure is arranged on a side of the pressure regulating seat body facing the valve core assembly and facing the water outlet hole. A water outlet channel connected to the water outlet hole is arranged between the buffer structure and the pressure regulating seat body.

[0008] The safety valve provided by the utility model has the following beneficial effects compared with the background technology:

[0009] The above-mentioned safety valve is provided with a buffer structure on one side of the pressure regulating seat body of the water outlet pressure regulating seat, and the buffer structure is provided opposite to the water outlet hole on the pressure regulating seat body, so that the water flowing back from the inner cavity of the water heater and out of the water outlet hole is initially depressurized by the buffer structure, and a water outlet channel connected to the water outlet hole is provided between the buffer structure and the pressure regulating seat body, so that after the water out of the water outlet hole is initially depressurized by the buffer structure, the water flow will diffuse or enter from all sides, and then flow out from the water outlet channel and flow to the first pressure relief port or the second pressure relief port, playing a certain role in pressure regulation protection, thereby protecting the inner cavity structure. Through the above structural form, the water flow flowing to the first pressure relief port or the second pressure relief port is initially depressurized by the buffer structure, so as to avoid the valve core assembly being directly subjected to the impact force of the water flow, thereby realizing the protection of the valve core assembly, thereby improving the practical reliability of the safety valve.

[0010] In one embodiment, the buffer structure comprises:

[0011] A plurality of connecting rods, the plurality of connecting rods are arranged at intervals along the circumference of the pressure regulating seat body, and one end of each of the connecting rods is connected to the pressure regulating seat body;

[0012] A baffle plate is arranged opposite to the water outlet, and a peripheral side of the baffle plate is connected to the other end of the connecting rod;

[0013] Wherein, the water outlet channel is defined between adjacent connecting rods.

[0014] In the present technical solution, the baffle and the pressure regulating seat body are spaced apart by connecting rods, and the water flow out of the water outlet is buffered by the baffle, thereby preliminarily reducing the impact force of the water flow. By arranging the connecting rods at intervals, water outlet channels are formed between the connecting rods to provide a circulation channel for the pressure relief of the water flow.

[0015] In one of the embodiments, a receiving groove is formed on a side of the pressure regulating seat body facing the baffle, and the connecting rod is connected to the bottom of the receiving groove.

[0016] By setting a receiving groove on the pressure regulating seat body and connecting one end of the connecting rod to the bottom of the receiving groove, space is provided for the formation of the baffle, the connecting rod and the water outlet channel, so that the structure of the entire water outlet pressure regulating seat is more compact, thereby reducing the space occupied by the water outlet pressure regulating seat.

[0017] In one embodiment, the safety valve further comprises:

[0018] a first elastic member, one end of which is sleeved on the buffer structure, and an end of which is against the bottom of the accommodating groove;

[0019] The other end of the first elastic member is sleeved outside the valve core assembly and abuts against the end surface of the valve core assembly;

[0020] Wherein, the first elastic member provides elastic force for the valve core assembly to move toward the water supply port.

[0021] By arranging one end of the first elastic member in the receiving groove, the first elastic member is limited by the groove wall of the receiving groove, thereby improving the stability of the first elastic member. The first elastic member provides elastic force for the valve core assembly to move toward the water supply port, so that when water is not supplied to the water heater, the valve core assembly can seal the water supply port under the elastic force of the first elastic member, thereby preventing water leakage at the water supply port.

[0022] In one embodiment, the pressure regulating seat body is interference fit with the valve body, an annular groove is provided on the outer peripheral surface of the pressure regulating seat body, and the safety valve includes a first sealing component, which is provided in the annular groove.

[0023] The pressure regulating seat body and the valve body are interference fit to achieve connection between the pressure regulating seat body and the valve body, and also to achieve sealing between the pressure regulating seat body and the valve body. The sealing performance between the outer peripheral surface of the pressure regulating seat body and the valve body is further improved by providing an annular groove on the outer peripheral surface of the pressure regulating seat body and providing a first sealing member in the annular groove.

[0024] In one embodiment, the valve core assembly includes:

[0025] A valve seat, provided with the first pressure relief port extending along the axis of the valve seat;

[0026] A valve core, comprising a connecting portion and a sealing portion connected to each other, wherein one end of the connecting portion is inserted into the first pressure relief port, the sealing portion is arranged outside the first pressure relief port, and the sealing portion can be fitted with an end surface of the valve seat to seal the first pressure relief port;

[0027] A second elastic member is sleeved on the connecting portion, and two ends of the second elastic member are respectively against one end of the valve core away from the sealing portion and a side surface of the valve seat away from the sealing portion;

[0028] Wherein, the second elastic member provides elastic force for the sealing portion of the valve core to move toward the valve seat.

[0029] By setting a first pressure relief port on the valve seat, inserting the connecting part into the first pressure relief port, and setting a second elastic member on the connecting part, the second elastic member provides elastic force for the sealing part to move toward the valve seat, so that the sealing part fits with the side of the valve seat to achieve sealing of the first pressure relief port. When there is a certain pressure in the water heater, the water in the water heater flows to the valve core assembly through the water outlet pressure regulating seat. The valve core is subjected to water pressure and overcomes the elastic force on the second elastic member, and moves toward the water supply port, so that there is a gap between the sealing part and the side of the valve seat. At this time, the second pressure relief port is connected with the water supply port to achieve pressure relief of the water heater.

[0030] In one embodiment, the valve core assembly further includes:

[0031] A stopper, sleeved on the connecting portion, wherein an end of the second elastic member facing away from the valve seat abuts against the stopper;

[0032] Wherein, a mounting groove is provided on the connecting portion, and the retaining member is installed in the mounting groove.

[0033] By providing a mounting groove on the connecting part and installing the stopper in the mounting groove, the reliability of the installation of the stopper and the valve core can be improved. By abutting the second elastic member against the stopper, the structure of the valve core can be simplified, and a side surface can be provided for the second elastic member to abut.

[0034] In one embodiment, a mounting step is provided at one end of the valve seat facing the water supply port, and the valve core assembly further comprises:

[0035] The second sealing member is sleeved on the outer peripheral surface of the installation step, one side of the second sealing member abuts against the end surface of the installation step, and the sealing portion can be sealed against the other side of the second sealing member.

[0036] The second sealing member is arranged at one end of the valve seat facing the water supply port, so as to achieve reliability of sealing of the water supply port by the valve core assembly.

[0037] In one embodiment, the valve body is further configured with a pressure relief channel and a second pressure relief port connected to the pressure relief channel, and the pressure relief channel is connected to the water supply channel; the safety valve further comprises:

[0038] The pressure relief assembly is arranged in the pressure relief channel, and the pressure relief assembly includes a pressure relief rod, and the pressure relief rod can move along the axial direction of the pressure relief channel to connect the pressure relief channel with the second pressure relief port.

[0039] By constructing a pressure relief channel and a second pressure relief port connected to the pressure relief channel on the valve body, and arranging a pressure relief component in the pressure relief channel, when the water pressure in the water heater exceeds a certain range, the pressure relief channel is connected to the second pressure relief port by moving the pressure relief component along the axial direction of the pressure relief channel, thereby achieving pressure relief on the water heater.

[0040] The utility model also provides a water heater, which can solve at least one of the above technical problems.

[0041] A water heater comprises the safety valve as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic diagram of the external outline of a safety valve provided by an embodiment of the utility model;

[0043] FIG2 is an explosion diagram of a safety valve provided by an embodiment of the utility model;

[0044] FIG3 is a cross-sectional schematic diagram of a safety valve provided by an embodiment of the utility model;

[0045] FIG4 is a cross-sectional schematic diagram of a valve body in a safety valve provided by an embodiment of the utility model;

[0046] FIG5 is a schematic structural diagram of a water outlet pressure regulating seat in a safety valve provided in an embodiment of the utility model.

[0047] Reference numerals:

[0048] Safety valve 100; valve body 110; water supply channel 111; water outlet 1111; water supply port 1112; pressure relief channel 112; second pressure relief port 113; valve core assembly 120; valve seat 121; first pressure relief port 1211; valve core 122; connecting portion 1221; sealing portion 1222; second elastic member 123; blocking member 124; second sealing member 125; water outlet pressure regulating seat 130; pressure regulating seat body 131; water outlet hole 1311; accommodating groove 1312; annular groove 1313; buffer structure 132; connecting rod 1321; baffle 1322; water outlet channel 1323; first elastic member 140; first sealing member 150; pressure relief assembly 160; rubber seat 161; pressure relief rod 162; stainless steel sheet 163; silicone gasket 164; third elastic member 165; clamping cap 166; oil pipe cap 167; handle 168; sealing gasket 170. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0055] An embodiment of the present invention provides a water heater, which includes a safety valve 100. The water heater provided by the present invention can be a gas water heater, an electric water heater, etc. In the present invention, a gas water heater is used as an example for description, wherein the structure of the safety valve 100 provided by the present invention is as follows.

[0056] Referring to Figures 1 to 5, Figure 1 shows a schematic diagram of the external contour of a safety valve in an embodiment of the present utility model; Figure 2 shows a schematic diagram of an explosion of a safety valve in an embodiment of the present utility model; Figure 3 shows a schematic diagram of a cross-section of a safety valve in an embodiment of the present utility model; Figure 4 shows a schematic diagram of a cross-section of a valve body in a safety valve in an embodiment of the present utility model; Figure 5 shows a schematic diagram of the structure of a water outlet pressure regulating seat of a safety valve in an embodiment of the present utility model. The utility model provides a safety valve 100 in one embodiment. The safety valve 100 includes a valve body 110, a valve core assembly 120 and a water outlet pressure regulating seat 130. The valve body 110 is configured with a water supply channel 111, and a water outlet 1111 and a water supply port 1112 connected to the water supply channel 111. The water outlet 1111 is used to connect to the inner tank of the water heater, and the water supply port 1112 is used to connect to a water source. The valve core assembly 120 is arranged in the water supply channel 111. The valve core assembly 120 can move along the axis of the water supply channel 111 so that the water supply port 1112 is connected to the water supply channel 111. The valve core assembly 120 A first pressure relief port 1211 is constructed, and the first pressure relief port 1211 can be opened to be connected with the water supply port 1112; the water outlet pressure regulating seat 130 is arranged at one end of the water supply channel 111 close to the water outlet 1111, and the water outlet pressure regulating seat 130 includes a pressure regulating seat body 131 and a buffer structure 132, and the pressure regulating seat body 131 is constructed with a water outlet hole 1311 passing through it along its axial direction, and the buffer structure 132 is arranged on the side of the pressure regulating seat body 131 facing the valve core assembly 120, and is opposite to the water outlet hole 1311, and a water outlet channel 1323 connected with the water outlet hole 1311 is arranged between the buffer structure 132 and the pressure regulating seat body 131.

[0057] The above-mentioned safety valve 100 is provided with a buffer structure 132 on one side of the pressure regulating seat body 131 of the water outlet pressure regulating seat 130, and the buffer structure 132 is provided opposite to the water outlet hole 1311 on the pressure regulating seat body 131, so that the water that flows back from the inner cavity of the water heater and flows out from the water outlet hole 1311 is initially depressurized by the buffer structure 132, and a water outlet channel 1323 connected with the water outlet hole 1311 is provided between the buffer structure 132 and the pressure regulating seat body 131, so that after the water flowing out of the water outlet hole 1311 is initially depressurized by the buffer structure 132, the water flow will diffuse or enter from all sides, and then flow out from the water outlet channel, flow out from the water outlet channel 1323, and flow to the first pressure relief port 1211 or the second pressure relief port 113, so as to play a certain pressure regulating protection role, thereby protecting the inner cavity structure. Through the above structure, the water flow flowing to the first pressure relief port 1211 or the second pressure relief port 113 is initially depressurized through the buffer structure 132, thereby reducing the impact force of the water flow on the spring, thereby protecting the spring, thereby increasing the life of the spring and the practical reliability of the safety valve 100.

[0058] It is understandable that the water supply port 1112 on the valve body 110 is connected to the tap of the tap water, and the water outlet 1111 on the valve body 110 is connected to the water heater tank. When the water heater is used, the water at the natural water tap flows into the water supply port 1112, and the valve core assembly 120 moves along the axis of the water supply channel 111 toward the water outlet 1111 under the action of the water pressure in the tap, so that the water supply port 1112 is opened. At this time, the water supply port 1112 is connected to the water supply channel 111, and the tap water can enter the water heater tank and be heated. In the process of the water heater heating the water, the water pressure gradually increases. As the water pressure in the water heater increases, the water pressure in the water heater tank will be passed from the water outlet 1111 into the water outlet pressure regulating seat 130. After the reflux water is initially reduced in pressure by the buffer structure 132, it continues to flow in the direction of the water supply port 1112. When water flows toward the water supply port 1112, the water will exert pressure on the valve core 122 described below, so that the valve core 122 moves away from the water outlet 1111 to open the first pressure relief port 1211, thereby allowing excess hot water or steam to flow back to the water supply port 1112 to relieve the pressure on the water heater.

[0059] In one embodiment, the buffer structure 132 includes a plurality of connecting rods 1321 and a baffle 1322. The plurality of connecting rods 1321 are arranged at intervals along the circumference of the pressure regulating seat body 131, and one end of each connecting rod 1321 is connected to the pressure regulating seat body 131; the baffle 1322 is arranged opposite to the water outlet hole 1311, and the circumferential side of the baffle 1322 is connected to the other end of the connecting rod 1321; wherein a water outlet channel 1323 is defined between adjacent connecting rods 1321.

[0060] There is no limitation on the material of the water outlet pressure regulating seat 130, which can be a metal product or a plastic product. Preferably, the water outlet pressure regulating seat 130 is made of plastic material, which can be nearly formed by injection molding, thereby reducing processing steps and reducing production costs.

[0061] In the present technical solution, the baffle 1322 and the pressure regulating seat body 131 are spaced apart by the connecting rod 1321, and the water flow out of the water outlet 1311 is buffered by the baffle 1322, thereby preliminarily reducing the impact force of the water flow. By arranging the connecting rods 1321 at intervals, a water outlet channel 1323 is formed between the connecting rods 1321 to provide a circulation channel for the pressure relief of the water flow.

[0062] With reference to Fig. 3 and Fig. 5, it can be understood that in one embodiment, a receiving groove 1312 is configured on one side of the pressure regulating seat body 131 facing the baffle 1322, and a connecting rod 1321 is connected to the groove bottom of the receiving groove 1312. Specifically, in this embodiment, the number of connecting rods 1321 is four, and the baffle 1322 is configured as a circular plate. The four connecting rods 1321 are evenly distributed on the peripheral side surface of the baffle 1322 and are fixedly connected to the side surface of the shaft. One end of the connecting rod 1321 facing away from the baffle 1322 is fixedly connected to the bottom of the Rong'an groove and is arranged around the water outlet 1311.

[0063] By setting a receiving groove 1312 on the pressure regulating seat body 131 and connecting one end of the connecting rod 1321 to the bottom of the receiving groove 1312, space is provided for the formation of the baffle 1322, the connecting rod 1321 and the water outlet channel 1323, thereby making the structure of the entire water outlet pressure regulating seat 130 more compact, thereby reducing the space occupied by the water outlet pressure regulating seat 130.

[0064] With reference to Figures 3 and 5, it can be understood that in one embodiment, the safety valve 100 also includes a first elastic member 140, one end of which is sleeved on the buffer structure 132, and the end of the first elastic member 140 is against the bottom of the accommodating groove 1312; the other end of the first elastic member 140 is sleeved outside the valve core assembly 120 and is against the end face of the valve core assembly 120; wherein the first elastic member 140 provides elastic force for the valve core assembly 120 to move toward the water supply port 1112.

[0065] By setting one end of the first elastic member 140 in the receiving groove 1312, the first elastic member 140 is limited by the groove wall of the receiving groove 1312, thereby improving the stability of the first elastic member 140. The first elastic member 140 provides elastic force for the valve core assembly 120 to move toward the water supply port 1112, so that when water is not supplied to the water heater, the valve core assembly 120 can seal the water supply port 1112 under the elastic force of the first elastic member 140, thereby preventing water leakage at the water supply port 1112. Specifically, the first elastic member 140 is a spring, and the inner ring of the first elastic member 140 is clamped on the circumferential surface surrounded by multiple connecting rods 1321.

[0066] With reference to FIG. 3 and FIG. 5 , it can be understood that in one embodiment, the pressure regulating seat body 131 and the valve body 110 are interference fit, and an annular groove 1313 is provided on the outer peripheral surface of the pressure regulating seat body 131. The safety valve 100 includes a first sealing member 150, and the first sealing member 150 is provided in the annular groove 1313. Specifically, the first sealing member 150 is a sealing ring, and the sealing ring is accommodated in the annular groove 1313 on the outer peripheral surface of the pressure regulating seat body 131. By interference fit between the pressure regulating seat body 131 and the valve body 110, the connection between the pressure regulating seat body 131 and the valve body 110 is achieved, and the sealing between the pressure regulating seat body 131 and the valve body 110 can also be achieved. By providing the annular groove 1313 on the outer peripheral surface of the pressure regulating seat body 131, and providing the first sealing member 150 in the annular groove 1313, the sealing performance between the outer peripheral surface of the pressure regulating seat body 131 and the valve body 110 can be further improved.

[0067] 2 and 3, in one embodiment, the valve core assembly 120 includes a valve seat 121, a valve core 122 and a second elastic member 123, the valve seat 121 is provided with a first pressure relief port 1211 extending along the axis of the valve seat 121; the valve core 122 includes a connecting portion 1221 and a sealing portion 1222 connected to each other, one end of the connecting portion 1221 is inserted into the first pressure relief port 1211, and the sealing portion 1222 is provided at the first pressure relief port 121. 1, the sealing portion 1222 can fit with the end surface of the valve seat 121 to seal the first pressure relief port 1211; the second elastic member 123 is sleeved on the connecting portion 1221, and the two ends of the second elastic member 123 respectively abut against one end of the valve core 122 away from the sealing portion 1222 and the side surface of the valve seat 121 away from the sealing portion 1222; wherein the second elastic member 123 provides elastic force for the sealing portion 1222 of the valve core 122 to move in the direction close to the valve seat 121.

[0068] By providing the first pressure relief port 1211 on the valve seat 121, inserting the connecting portion 1221 into the first pressure relief port 1211, and providing the second elastic member 123 on the connecting portion 1221, the second elastic member 123 provides elastic force for the sealing portion 1222 to move toward the valve seat 121, so that the sealing portion 1222 fits the side of the valve seat 121 to achieve sealing of the first pressure relief port 1211. When there is a certain pressure in the water heater, the water in the water heater flows to the valve core assembly 120 through the water outlet pressure regulating seat 130. The valve core 122 is subjected to water pressure and overcomes the elastic force on the second elastic member 123, and moves toward the water supply port 1112, so that there is a gap between the sealing portion 1222 and the side of the valve seat 121, and at this time, the second pressure relief port 113 is connected with the water supply port 1112 to achieve pressure relief of the water heater.

[0069] It can be understood that the connecting portion 1221 is a rod-shaped structure, and the sealing portion 1222 is a round block-shaped structure. The second elastic member 123 is a spring, and the second elastic member 123 is sleeved on the connecting portion 1221 of the rod-shaped structure. The outer diameter of the connecting portion 1221 is smaller than the inner diameter of the first pressure relief port 1211, so that when the connecting portion 1221 is inserted into the first pressure relief port 1211, it can move relative to the valve seat 121, and the other end of the connecting portion 1221 extends out of the first pressure relief port 1211, and one end of the second elastic member 123 abuts on the valve seat 121, and the other end abuts on the end of the connecting portion 1221. And the second elastic member 123 is in a micro-pressure state in the absence of water pressure, so that the valve core 122 has a tendency to move toward the water outlet pressure regulating seat 130 under the elastic force of the second elastic member 123, so that the sealing portion 1222 fits the side of the valve seat 121.

[0070] With reference to Fig. 2 and Fig. 3, in one embodiment, the valve core assembly 120 further includes a stopper 124, which is sleeved on the connecting portion 1221, and one end of the second elastic member 123 that is away from the valve seat 121 abuts against the stopper 124; wherein a mounting groove is provided on the connecting portion 1221, and the stopper 124 is installed in the mounting groove. Specifically, the mounting groove is an annular groove provided on the outer peripheral surface of the connecting portion 1221, and the stopper 124 is an open retaining ring, and the connection between the open retaining ring and the valve core 122 is achieved by clamping the open retaining ring in the annular groove. One end of the second elastic member 123 that is away from the valve seat 121 abuts against the side of the open retaining ring.

[0071] By providing a mounting groove on the connecting portion 1221 and installing the stopper 124 in the mounting groove, the reliability of the installation of the stopper 124 and the valve core 122 is improved. By abutting the second elastic member 123 against the stopper 124, the structure of the valve core 122 can be simplified, and a side surface can be provided for the second elastic member 123 to abut.

[0072] With reference to FIG. 2 and FIG. 3 , it can be understood that in one embodiment, a mounting step is provided at one end of the valve seat 121 facing the water supply port 1112, and the valve core assembly 120 further includes a second sealing member 125, which is sleeved on the outer peripheral surface of the mounting step, one side of the second sealing member 125 abuts against the end surface of the mounting step, and the sealing portion 1222 can be sealed against the other side of the second sealing member 125. By providing the second sealing member 125 at one end of the valve seat 121 facing the water supply port 1112, the reliability of the valve core assembly 120 sealing the water supply port 1112 can be achieved.

[0073] It can be understood that the second sealing member 125 is a sealing gasket, the inner hole of the sealing gasket is sleeved on the outer peripheral surface of the installation step, and the sealing gasket is tightly matched with the installation step. The end of the first elastic member 140 away from the water outlet pressure regulating seat 130 abuts against the sealing gasket, so that the whole formed by the valve seat 121 and the sealing gasket moves toward the direction of the water supply port 1112 under the elastic force of the first elastic member 140, so as to close the water supply port 1112 through the sealing gasket 170.

[0074] Referring to FIGS. 2 to 4 , it can be understood that in one embodiment, the valve body 110 is further configured with a pressure relief channel 112 and a second pressure relief port 113 connected to the pressure relief channel 112, and the pressure relief channel 112 is connected to the water supply channel 111; the safety valve 100 further includes a pressure relief assembly 160, which is arranged in the pressure relief channel 112, and the pressure relief assembly 160 includes a pressure relief rod 162, and the pressure relief rod 162 can move along the axial direction of the pressure relief channel 112 to connect the pressure relief channel 112 with the second pressure relief port 113. By configuring the pressure relief channel 112 and the second pressure relief port 113 connected to the pressure relief channel 112 on the valve body 110, and arranging the pressure relief assembly 160 in the pressure relief channel 112, when the water pressure in the water heater exceeds a certain range, the pressure relief channel 112 is connected to the second pressure relief port 113 by the pressure relief assembly 160 moving along the axial direction of the pressure relief channel 112, thereby realizing the pressure relief of the water heater.

[0075] With reference to FIGS. 2 to 4 , specifically, the pressure relief assembly 160 includes a rubber seat 161, a pressure relief rod 162, a stainless steel sheet 163, a silicone gasket 164, a third elastic member 165, a clamping cap 166, an oil pipe cap 167 and a handle 168. The rubber seat 161 is sleeved on one end of the pressure relief rod 162 facing the water supply channel 111, and the rubber sleeve can move relative to the pressure relief rod 162 along the axial direction of the pressure relief rod 162. The stainless steel sheet 163 and the silicone gasket 164 are fixed in a groove at one end of the rubber seat 161 away from the pressure relief rod 162. The rubber seat 161, the stainless steel sheet 163 and the silicone gasket 164 can seal the mouth where the pressure relief channel 112 and the water supply channel 111 meet. The clamping cap 166 is fixedly connected to the pressure relief rod 162, and the third elastic member 165 is sleeved on the pressure relief rod 162, with both ends respectively resting on the rubber seat 161 and the clamping cap 166. The third elastic member 165 is in a slightly pressured state, and the rubber seat 161 has a tendency to move away from the clamping cap 166 under the elastic force of the third elastic member 165, so that the rubber seat 161 rests on the end wall of the pressure relief channel 112. When the pressure or temperature in the water heater exceeds the set value, the water in the water heater tank will flow back toward the water outlet pressure regulating seat 130, and the refluxed water will first be initially depressurized by the baffle 1322 on the water outlet pressure regulating seat 130. Since the water pressure in the return water is relatively high at this time, the water pressure acts on the rubber seat 161 and overcomes the elastic force of the third spring, pushing the rubber seat 161 toward the clamping cap 166. When the rubber seat 161 moves to be separated from the end wall of the pressure relief channel 112, the water supply channel 111 is connected to the pressure relief channel 112 and to the second pressure relief port 113. At this time, excess hot water or steam flows out from the second pressure relief port 113.

[0076] With reference to FIG. 2 and FIG. 3 , it can be understood that the installation principle of the safety valve 100 provided by the utility model is as follows:

[0077] First, pre-install the valve core assembly 120, first put the second sealing member 125 on the installation step of the valve seat 121, insert the end of the valve core 122 away from the sealing portion 1222 into the first pressure relief port 1211 of the valve seat 121, put the second elastic member 123 on the connecting portion 1221 of the valve core 122, and then install the open retaining ring in the installation groove. In this way, the valve core assembly 120 is installed.

[0078] Install the pre-assembled valve core assembly 120 from the water outlet 1111 into the water supply channel 111. Sleeve the first elastic member 140 on the water outlet pressure regulating seat 130, install the first sealing member 150 into the annular groove 1313 on the pressure regulating seat body 131, and install the water outlet pressure regulating seat 130 from the water outlet 1111 into the water supply channel 111.

[0079] Pass one end of the pressure relief rod 162 through the rubber seat 161, and install the stainless steel sheet 163 and the silicone gasket 164 into the groove of the rubber seat 161. Sleeve the third spring on the pressure relief rod 162, connect the pressure relief rod 162 with the clamping cap 166, and then connect the pressure relief rod 162 with the handle 168 through the oil outlet pipe, and finally connect the clamping cap 166 with the valve body 110 through threads. In this way, the safety valve 100 is assembled.

[0080] It should be noted that a sealing gasket 170 is also provided at one end of the water outlet pressure regulating seat 130 away from the valve core assembly 120 to achieve sealing between the water heater and the water outlet 1111 .

[0081] An embodiment of the present invention further provides a water heater, which includes the safety valve 100 as described above.

[0082] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments 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.

[0083] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A safety valve, characterized in that: The safety valve comprises: A valve body (110) is constructed with a water supply channel (111), and a water outlet (1111) and a water supply port (1112) that are in communication with the water supply channel (111); A valve core assembly (120) is disposed in the water supply channel (111); the valve core assembly (120) is movable along the axis of the water supply channel (111) so that the water supply port (1112) is connected to the water supply channel (111); the valve core assembly (120) is provided with a first pressure relief port (1211); the first pressure relief port (1211) can be opened to be connected to the water supply port (1112); A water outlet pressure regulating seat (130) is arranged at one end of the water supply channel (111) close to the water outlet (1111), the water outlet pressure regulating seat (130) comprising a pressure regulating seat body (131) and a buffer structure (132), the pressure regulating seat body (131) being provided with a water outlet hole (1311) extending through the pressure regulating seat body along its axial direction, the buffer structure (132) being arranged on a side of the pressure regulating seat body (131) facing the valve core assembly (120) and facing the water outlet hole (1311), and a water outlet channel (1323) connected to the water outlet hole (1311) being arranged between the buffer structure (132) and the pressure regulating seat body (131).

2. The safety valve according to claim 1, characterized in that: The buffer structure (132) comprises: A plurality of connecting rods (1321), wherein the plurality of connecting rods (1321) are arranged at intervals along the circumference of the pressure regulating seat body (131), and one end of each connecting rod (1321) is connected to the pressure regulating seat body (131); A baffle (1322) is arranged opposite to the water outlet hole (1311), and a peripheral side of the baffle (1322) is connected to the other end of the connecting rod (1321); Wherein, the water outlet channel (1323) is defined between adjacent connecting rods (1321).

3. The safety valve according to claim 2, characterized in that: A receiving groove (1312) is formed on the side of the pressure regulating seat body (131) facing the baffle (1322), and the connecting rod (1321) is connected to the groove bottom of the receiving groove (1312).

4. The safety valve according to claim 3, characterized in that: The safety valve further comprises: a first elastic member (140), one end of the first elastic member (140) being sleeved on the buffer structure (132), and an end of the first elastic member (140) being against a groove bottom of the accommodating groove (1312); The other end of the first elastic member (140) is sleeved outside the valve core assembly (120) and abuts against an end surface of the valve core assembly (120); Wherein, the first elastic member (140) provides elastic force for the valve core assembly (120) to move in a direction close to the water supply port (1112).

5. The safety valve according to claim 1, characterized in that: The pressure regulating seat body (131) and the valve body (110) are interference fit, an annular groove (1313) is provided on the outer peripheral surface of the pressure regulating seat body (131), and the safety valve comprises a first sealing component (150), and the first sealing component (150) is arranged in the annular groove (1313).

6. The safety valve according to any one of claims 1 to 5, characterized in that: The valve core assembly (120) comprises: The valve seat (121) is provided with the first pressure relief port (1211) extending along the axis of the valve seat (121); The valve core (122) comprises a connecting portion (1221) and a sealing portion (1222) which are connected to each other, wherein one end of the connecting portion (1221) is inserted into the first pressure relief port (1211), and the sealing portion (1222) is arranged outside the first pressure relief port (1211), and the sealing portion (1222) can fit with an end surface of the valve seat (121) to seal the first pressure relief port (1211); a second elastic member (123) sleeved on the connecting portion (1221), with two ends of the second elastic member (123) respectively abutting against an end of the valve core (122) away from the sealing portion (1222) and a side surface of the valve seat (121) away from the sealing portion (1222); The second elastic member (123) provides elastic force for the sealing portion (1222) of the valve core (122) to move in a direction close to the valve seat (121).

7. The safety valve according to claim 6, characterized in that: The valve core assembly (120) further includes: A stopper (124) is sleeved on the connecting portion (1221), and an end of the second elastic member (123) facing away from the valve seat (121) abuts against the stopper (124); Wherein, a mounting groove is provided on the connecting portion (1221), and the retaining member (124) is mounted in the mounting groove.

8. The safety valve according to claim 6, characterized in that: An installation step is provided at one end of the valve seat (121) facing the water supply port (1112), and the valve core assembly (120) further comprises: The second sealing member (125) is sleeved on the outer peripheral surface of the installation step, one side of the second sealing member (125) abuts against the end surface of the installation step, and the sealing portion (1222) can be sealed against the other side of the second sealing member (125).

9. The safety valve according to any one of claims 1 to 5, characterized in that: The valve body (110) is further configured with a pressure relief channel (112) and a second pressure relief port (113) connected to the pressure relief channel (112); the pressure relief channel (112) is connected to the water supply channel (111); the safety valve further comprises: A pressure relief assembly (160) is disposed in the pressure relief channel (112), and the pressure relief assembly (160) comprises a pressure relief pull rod, and the pressure relief pull rod is movable along the axial direction of the pressure relief channel (112) so that the pressure relief channel (112) is connected to the second pressure relief port (113).

10. A water heater, characterized in that: The water heater comprises a safety valve as claimed in any one of claims 1 to 9.

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