CN217763898U - Gas water heater - Google Patents

Abstract

The utility model discloses a gas water heater relates to domestic appliance technical field, for solving gas water heater water reuse after cutting off water, the water in the heat exchanger is heated the temperature by the waste heat and rises. The gas water heater includes a heat exchanger and a damping device. The heat exchanger comprises a water inlet pipe, a water outlet pipe and a bypass pipe, wherein the water inlet pipe and the water outlet pipe are communicated with a heat exchange area of the heat exchanger. The bypass pipe comprises a water inlet section and a water outlet section, the water inlet section is communicated with the water inlet pipe, the water outlet section is communicated with the water outlet pipe, one end of the water outlet section, which is close to the water inlet section, is provided with a first water inlet, and the radial size of the first water inlet is gradually reduced from one end close to the water inlet section to one end far away from the water inlet section. The damping device comprises a shell, an elastic part and a valve cover, one end of the shell is communicated with the water inlet section, the other end of the shell is communicated with the water outlet section, the elastic part and the valve cover are located in the shell, one end of the elastic part is connected with one of the water inlet section, the water outlet section and the shell, the other end of the elastic part is connected with the valve cover, and the valve cover is arranged close to the first water inlet and can be matched with the first water inlet.

Description

Gas water heater

Technical Field

The utility model relates to a water heater technical field especially relates to a gas heater.

Background

Gas water heaters generally produce hot water by transferring heat released from the combustion of a gas to cold water flowing through a heat exchange area of a heat exchanger. After the user stops using the water, the water staying in the heat exchange area of the heat exchanger is continuously heated under the influence of the residual heat in the heat exchanger, so that the water temperature of the water in the heat exchange area of the heat exchanger is increased. When the user uses water again, the water staying in the heat exchanger flows through the user area, and the user feels the water temperature is increased.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a gas heater for solve the user and stop the problem that the temperature of the water that stops in heat exchanger's heat transfer district risees with the reuse water behind the water.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

the utility model provides a gas water heater, the utility model provides a gas water heater can include heat exchanger and damping device, this heat exchanger can include the heat transfer district, the inlet tube, outlet pipe and bypass pipe, wherein, inlet tube and heat exchanger's heat transfer district intercommunication, the outlet pipe communicates with heat exchanger's heat transfer district, based on this, above-mentioned bypass pipe includes the section of intaking and goes out the water section, the section of intaking and inlet tube intercommunication, go out water section and outlet pipe intercommunication, and it has first water inlet to go out the one end that the water section is close to the section of intaking, the diameter of first water inlet is reduced to the one end of keeping away from the section of intaking gradually by the one end that is close to the section of intaking. On this basis, above-mentioned gas heater can also include damping device, and this damping device includes casing, elastic component, valve gap, wherein, the one end and the section intercommunication of intaking of casing, the other end and play water section intercommunication, elastic component and valve gap all are located the casing, and wherein elastic component one end is connected with one in the section of intaking, play water section and the casing, and the other end is as the free end, and the valve gap is connected with the free end of elastic component, and this valve gap is located the casing and is close to first water inlet setting, and can cooperate in first water inlet.

Therefore, when the gas water heater is used, the water inlet pipe and the water outlet pipe are respectively communicated with the heat exchange area of the heat exchanger, when a user uses the gas water heater, cold water can flow along the water inlet pipe and flow into the heat exchange area of the heat exchanger, and the cold water is heated in the heat exchange area to achieve the purpose of preparing hot water. The hot water can flow out along the water outlet pipe for users to use. When cold water enters the heat exchange area of the heat exchanger along the water inlet pipe, a part of cold water can also flow into the bypass pipe, and in the process that the cold water flows into the bypass pipe from the water inlet pipe, water flow sequentially flows through the water inlet section, the shell and the water outlet section of the bypass pipe under the action of pressure, and finally the cold water enters the water outlet pipe and water which is continuously heated by waste heat in the heat exchange area. In the process, when a user does not use water, the water in the shell of the damping device is in a static state, the valve cover and the elastic part which are positioned in the shell are not subjected to pressure, the water flow channel between the valve cover and the first water inlet is the largest, the water flow which flows into the water outlet pipe from the bypass pipe is the largest, when the user starts to use water, the water in the shell of the damping device starts to flow, the water flow pressure in the shell acts on the valve cover, the elastic part connected with the valve cover is elastically deformed, the water flow channel between the valve cover and the first water inlet is gradually reduced and finally tends to be stable, the water flow channel is not changed, the water flow which flows into the water outlet pipe from the bypass pipe is gradually reduced and finally stabilized and does not change, and in the process that the water flow in the bypass pipe is from the largest to stable, the water with the temperature which is continuously heated by waste heat in the heat exchange area can be neutralized to the largest extent, so that the problem that the water temperature is increased when the water is used again after the water is stopped is solved.

In some embodiments of the present application, the valve cover is located between the water inlet section and the water outlet section, and the valve cover is spaced from the water inlet section.

In some embodiments of the present application, the bypass pipe has a diameter that is less than the diameter of the inlet pipe, and the bypass pipe also has a diameter that is less than the diameter of the outlet pipe.

In some embodiments of the present application, the heat exchanger has a second water inlet and a water outlet, wherein the second water inlet is disposed in the heat exchange region and is communicated with the water inlet pipe to communicate the water inlet pipe with the heat exchange region, and the water outlet is disposed in the heat exchange region and is communicated with the water outlet pipe to communicate the water outlet pipe with the heat exchange region.

In some embodiments of the application, the gas water heater further comprises a heat exchange pipe, the heat exchange pipe is located in the heat exchange area, the second water inlet is formed in one end of the heat exchange pipe, and the water outlet is formed in the other end of the heat exchange pipe.

In some embodiments of the present application, the first water inlet is flared.

In some embodiments of the present application, the valve cover is a circular truncated cone matched with the bell mouth, the maximum radial dimension of the valve cover is greater than the minimum radial dimension of the bell mouth and less than the circular truncated cone matched with the first water inlet, the maximum radial dimension of the valve cover is greater than the minimum radial dimension of the first water inlet and less than the maximum radial dimension of the first water inlet, the minimum radial dimension of the valve cover is less than the minimum radial dimension of the first water inlet, or the valve cover is a cylinder matched with the first water inlet, and the radial dimension of the valve cover is greater than the minimum radial dimension of the first water inlet and less than the maximum radial dimension of the first water inlet.

In some embodiments of the present application, the gas water heater may further include a valve seat disposed at an end of the water outlet section near the water inlet section, the bell mouth is disposed in the valve seat, and the bell mouth faces the water inlet section.

In some embodiments of the present application, the elastic member may be a plurality of rubber rods, the plurality of rubber rods are located in the casing, and the plurality of rubber rods are arranged at intervals along a circumferential direction of the casing, one end of each rubber rod is connected to the casing, and the other end of each rubber rod is used as a free end and is connected to the valve cover.

In some embodiments of the present application, the elastic member may also be a spring, the spring is located in the housing, and one end of the spring is connected to one of the water inlet section and the water outlet section, and the other end serves as a free end and is connected to the valve cover.

Drawings

FIG. 1 is a schematic structural diagram of a gas water heater provided in an embodiment of the present application;

FIG. 2 is a schematic view of the heat exchange area in FIG. 1 with a second water inlet and a second water outlet;

FIG. 3 is a schematic view of the heat exchange section of FIG. 2 with heat exchange tubes disposed therein;

FIG. 4 is a schematic view of the heat exchanger of the gas water heater of FIG. 1 including a bypass line;

FIG. 5 is a schematic view of a damping device according to an embodiment of the present disclosure;

FIG. 6 is another schematic view of the damping device of FIG. 5;

FIG. 7 is an enlarged view taken at a point a in FIG. 6;

FIG. 8 is another schematic view of the damping device of FIG. 7;

FIG. 9 is a schematic view of the damping device of FIG. 8 showing the elastic member being elastically deformed;

FIG. 10 is another schematic illustration of the valve cover of FIG. 9;

FIG. 11 is a schematic view of a valve seat of the damping device of FIG. 5;

FIG. 12a is a schematic view of the elastic member of FIG. 8 being a rubber rod;

FIG. 12b is another schematic view of the elastic member of FIG. 8 being a rubber rod;

FIG. 12c is a schematic view of the rubber rod of FIG. 12b being elastically deformed;

FIG. 13 is a schematic view of a spring disposed in the water intake section;

fig. 14 is a schematic view of the guide post and the connecting member disposed at the water outlet section.

Reference numerals: 100-a gas water heater; 2-a burner; 3-a heat exchanger; 30-heat exchange zone; 31-a water inlet pipe; 32-water outlet pipe; 310-a second water inlet; 320-water outlet; 9-heat exchange tube; 91-heat exchange tube straight tube; 92-heat exchange tube elbow; 33-a bypass pipe; 34-a damping device; 341-a housing; 331-water inlet section; 332-water outlet section; 3320-first water inlet; 342-an elastic member; 343-valve cover; 5-valve seat; 3421-rubber rod; 3422-a spring; 345-guide posts; 346-connecting piece.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a gas water heater, as shown in figure 1, this gas water heater 100 can include casing 1, combustor 2, heat exchanger 3. The casing 1 has a containing cavity, the burner 2 and the heat exchanger 3 are located in the containing cavity, the burner 2 is arranged below the heat exchanger 3 and connected with the heat exchanger 3, the burner 2 generates a large amount of heat by burning gas, and the part of heat generated by burning gas is transferred to cold water to be heated through the heat exchanger 3, so as to achieve the purpose that the gas water heater 100 prepares hot water.

Based on this, with continued reference to fig. 1, the heat exchanger 3 may include a heat exchange zone 30, an inlet pipe 31 and an outlet pipe 32, wherein the inlet pipe 31 is in communication with the heat exchange zone 30 of the heat exchanger 3 and the outlet pipe 32 is also in communication with the heat exchange zone 30 of the heat exchanger 3. Thus, cold water to be heated can enter the heat exchange area 30 of the heat exchanger 3 through the water inlet pipe 31 and be heated by heat generated by the combustion gas of the burner 2, so as to achieve the purpose of preparing hot water, and then the hot water flows from the heat exchanger 3 to the water outlet pipe 32 and flows out through the water outlet pipe 32 to be directly used by a user or provide hot water for a water using terminal.

In addition, as shown in fig. 2, the heat exchanger 3 may further include a second water inlet 310 and a second water outlet 320, wherein the second water inlet 310 and the second water outlet 320 are both disposed in the heat exchange area, and based on this, the second water inlet 310 is communicated with the water inlet pipe 31 so that the water inlet pipe can be communicated with the heat exchange area, and similarly, the water outlet 320 is communicated with the water outlet pipe 32 so that the water outlet pipe 32 can be communicated with the heat exchange area.

Therefore, the water inlet pipe 31 can be communicated with the heat exchange area 30 through the second water inlet 310 of the heat exchanger 3, and the water outlet pipe 32 can be communicated with the heat exchange area 30 through the water outlet 320 of the heat exchanger 3, in this case, cold water to be heated can flow through the second water inlet 310 through the water inlet pipe 31 and then enter the heat exchange area 30 of the heat exchanger 3, and is heated by heat generated by combustion gas of the burner 2, so as to achieve the purpose of preparing hot water, and the hot water flows through the water outlet 320 and flows to the water outlet pipe 32, flows out through the water outlet pipe 32 to be directly used by a user, or provides hot water for a water terminal.

Based on the above, cold water can enter the heat exchange area 30 of the heat exchanger 3 through the water inlet pipe 31, and after being heated, the cold water flows out through the water outlet pipe 32 for use by a user, and based on this, as shown in fig. 3, the gas water heater 100 includes a heat exchange pipe 9, and the heat exchange pipe 9 may include a plurality of heat exchange pipe straight pipes 91 and a plurality of heat exchange pipe bent pipes 92. Wherein, a part of the heat exchange tube straight tube 91 is positioned in the heat exchange zone 30, and the heat exchange tube bent tube 92 is positioned outside the heat exchange zone 30 and is used for communicating the part of the heat exchange tube straight tube positioned outside the heat exchange zone 30. The part of the heat exchange tube 9 in the heat exchange area 30 is a straight tube, so that the water path circulation is convenient. Based on this, the second water inlet 310 is disposed at one end of the heat exchange pipe 9, and the water outlet 320 is disposed at the other end of the heat exchange pipe 9. Cold water enters the heat exchange tube 9 through the second water inlet 310 along the water inlet tube 31, is heated by heat generated by combustion of gas in the heat exchange tube 9, and then flows to a user water area along the water outlet tube 32 through the water outlet 320, or provides hot water for a water terminal. In some embodiments of the present application, the cross-sectional profile of the heat exchange tube straight tube 91 may be an ellipse, so that the heat exchange area of the cooling water in the heat exchange tube 9 may be increased, and the heat exchange efficiency may be improved.

Generally, during the process of using the gas water heater 100 by a user, the user switches the operating state of the gas water heater 100, i.e., the user water state, the gas water heater 100 is operated to prepare hot water and deliver the hot water to the user water area along a pipeline or deliver the hot water to a water end for the user, and the other operating state, i.e., the user water cut-off state, the gas water heater 100 stops operating, no cold water is heated, and water supply is stopped. In the process that the user switches the gas water heater 100 from the water using state to the water stopping state, the water is affected by the waste heat inside the heat exchanger 3, the water that is still left in the heat exchanging area 30 of the heat exchanger 3 after the user stops using the water is continuously heated by the waste heat, so that the water temperature of the water is increased, in this case, when the user starts using the water again, the water temperature that is still in the heat exchanging area 30 and continuously heated by the waste heat is increased, the water with the increased water temperature flows through the water outlet 320 and flows through the user area along the water outlet pipe 32, and the user feels that the water temperature is higher than the preset water temperature, which affects the user experience.

To solve this problem, as shown in fig. 4, the heat exchanger 3 may further include a bypass pipe 33, one end of the bypass pipe 33 being communicated with the inlet pipe 31 and the other end being communicated with the outlet pipe 32, in which case, when the user uses water again from the water cut-off state, since the pressure in the inlet pipe 31 is greater than the pressure in the outlet pipe 32, a portion of the cold water flows into the bypass pipe 33 from the inlet pipe 31, and the portion of the cold water flowing into the bypass pipe 33 from the inlet pipe 31 flows into the outlet pipe 32 along the bypass pipe 33. Thus, when the water that is still in the heat exchanger 3 after the water supply is stopped and continuously heated by the residual heat flows into the water outlet pipe 32, the water is neutralized by the cold water in the bypass pipe 33, so that the temperature of the water is reduced after the water continuously heated by the residual heat is neutralized by the cold water in the bypass pipe 33, and the problem of the increase of the water temperature is solved. However, since the pipe diameter of the bypass pipe 33 is generally constant, the flow rate of cold water flowing along the bypass pipe 33 into the outlet pipe 32 is constant per unit time, and thus the capacity of the cold water in the bypass pipe 33 to neutralize hot water is limited.

As described above, the problem that the water temperature rises because the water still in the heat exchanger 3 is continuously heated by the residual heat after the water supply is stopped is solved. A bypass pipe 33 may be disposed between the water inlet pipe 31 and the water outlet pipe 32, and two ends of the bypass pipe 33 are respectively communicated with the water inlet pipe 31 and the water outlet pipe 32, so that a part of cold water can flow into the water outlet pipe 32 along the bypass pipe 33 to neutralize the part of water with high temperature which is continuously heated by the residual heat. However, the ability of the cold water in the bypass pipe 33 to neutralize the hot water is limited.

On the basis, as shown in fig. 5, the heat exchanger 3 may further include a damping device 34, and referring to fig. 6, the damping device 34 includes a housing 341 communicating with the bypass pipe 33, in which case, the bypass pipe 33 may include a water inlet section 331 and a water outlet section 332, one end of the housing 341 communicating with the water inlet section 331, a portion of the water inlet section 331 extending into the housing 341, the other end of the housing 341 communicating with the water outlet section 332, and a portion of the water outlet section 332 extending into the housing 341.

Based on this, the end of the water inlet section 331 away from the housing 341 is connected to the water inlet pipe 31, and the end of the water outlet section 332 away from the housing 341 is connected to the water outlet pipe 32, so that a part of the cold water in the water inlet pipe 31 can flow into the housing 341 of the damping device 34 from the water inlet section 331 of the bypass pipe 33, and the part of the cold water flows out of the housing 341 and flows into the water outlet pipe 32 through the water outlet section 332 of the bypass pipe 33.

In addition, as shown in fig. 7 (enlarged view at a in fig. 6), one end of the water outlet section 332 close to the water inlet section 331 is provided with a first water inlet 3320, and the radial dimension of the first water inlet 3320 is gradually reduced from one end close to the water inlet section 331 to one end far from the water inlet section 331, in this case, the first water inlet is a bell mouth, so that the water flowing into the housing 341 can flow towards the water outlet pipe 32 through the first water inlet 3320, as shown in fig. 8, the damping device 34 can further comprise an elastic member 342 and a valve cover 343, the elastic member 342 and the valve cover 343 are both located in the housing 341, wherein one end of the elastic member 342 is connected with one of the water inlet section 331, the water outlet section 332 and the housing 341, and the other end thereof is a free end which is connected with the valve cover 343 and is located close to the first water inlet 3320 and can be matched in the first water inlet 3320.

On the basis, when the user stops using water, the pressure of the water inlet pipe 31 is equal to that of the water outlet pipe 32, the water flow in the housing 341 is still, the valve cover 343 and the elastic element 342 are not stressed, the elastic element 342 is not elastically deformed, the water flow passage between the valve cover 343 and the first water inlet 3320 is in the maximum state (see fig. 8), when the user uses water again, the pressure of the water inlet pipe 31 is greater than that of the water outlet pipe 32, a part of cold water in the water inlet pipe 31 enters the housing 341 of the damping device 34 through the water inlet section 331 of the bypass pipe 33, and the part of water flows through the water flow passage between the valve cover 343 and the first water inlet 3320 under the pressure, flows into the water outlet section 332 of the bypass pipe 33, further flows into the water outlet pipe 32 and is further heated by the residual heat, during the cold water flows through the water inlet section 331, the housing 341 and the water outlet section 332 from the water inlet pipe 31, the pressure in the housing 341 acts on the valve cover 343, so that the elastic element 342 connected with the valve cover 343 is elastically deformed, as shown in fig. 9, the valve cover 343 moves in the direction X in the drawing, so that the water flow passage between the valve cover 343 and the first water inlet 343 is not gradually reduced, and finally tends to stabilize the water flow passage 3220.

In summary, in the process of using water again after the user stops using water, the water flow in the bypass pipe 33 starts to flow, at an initial stage, the water flow passage between the valve cover 343 and the first water inlet 3220 is the largest, the water flow flowing into the water outlet pipe 32 from the bypass pipe 33 is the largest, the water flow gradually increases as time goes on, when the water flow starts to apply pressure to the valve cover 343, the valve cover 343 moves toward the X direction (see fig. 9) along with the elastic member 342 being elastically deformed, the water flow passage between the valve cover 343 and the first water inlet 3220 gradually decreases, and finally, an equilibrium state is reached, and the water flow in the bypass pipe 33 is maintained stable. In the process that the water flow in the bypass pipe 33 is stabilized from the maximum, the water which is heated continuously by the waste heat in the heat exchanger 3 and has the temperature increased can be neutralized to the maximum when the water flow is maximized, so that the problem that the water temperature of the reuse water is increased after the water is cut off is solved, and the water temperature can be kept unchanged in the subsequent use after the water flow is stabilized.

As mentioned above, the valve cover 343 cooperates with the first water inlet 3220 to adjust the size of the water flow passage in the bypass pipe 33, and the valve cover 343 will be further described with reference to the following embodiments.

In some embodiments of the present application, as shown in fig. 8, the valve cover 343 may be a circular table matched with the first water inlet 3220, a maximum radial dimension of the valve cover 343 is greater than a minimum radial dimension of the first water inlet 3220 and less than a maximum radial dimension of the first water inlet 3220, and a minimum radial dimension of the valve cover 343 is less than a minimum radial dimension of the first water inlet 3220. In this way, when the valve cover 343 moves along with the elastic member 342 in the X direction (see fig. 9), the minimum radial diameter of the valve cover 343 is smaller than the maximum radial diameter of the first water inlet 3220 and larger than the minimum radial dimension of the first water inlet 3220, so that the valve cover 343 can be partially located in the opening of the first water inlet 3220 during the movement in the X direction close to the water outlet section 332, and the above change process is realized, and the water flow passage between the valve cover 343 and the first water inlet 3220 is maximally and gradually reduced, and is stabilized.

In other embodiments of the present application, as shown in fig. 10, the valve cover 343 may also be a cylinder matched with the first water inlet 3220, and the radial dimension of the valve cover 343 is greater than the minimum radial dimension of the first water inlet 3220 and less than the maximum radial dimension of the first water inlet 3220. In this way, when the valve cover 343 moves along with the elastic member 342 in the X direction (see fig. 9), the radial diameter of the valve cover 343 is smaller than the maximum radial diameter of the first water inlet 3220 and larger than the minimum radial dimension of the first water inlet 3220, so that the valve cover 343 can be partially located in the opening of the first water inlet 3220 during the movement towards the water outlet section 332, and this change is achieved by the maximum gradual reduction and stabilization of the water flow passage between the valve cover 343 and the first water inlet 3220.

As can be seen from the above, the valve cover needs to cooperate with the first water inlet 3220 to achieve the purpose of adjusting the water flow rate in the bypass pipe, and the first water inlet 3220 will be described below.

As shown in fig. 11, the gas water heater may further include a valve seat 5, the valve seat 5 is disposed at an end of the water outlet section 332 close to the water inlet section 331, and the first water inlet 3220 is disposed in the valve seat 5 and faces the water inlet section 331, so that the first water inlet 3220 is connected to the water outlet section 332 through the valve seat 5, and the first water inlet 3220 can cooperate with the valve cover 343 to achieve the purpose of adjusting the water flow in the bypass pipe 33, and further achieve the purpose of neutralizing the temperature of the hot water in the water outlet pipe 32.

As can be seen from the above description, in order to match the valve cover 343 with the first water inlet 3220, the water flow channel in the bypass pipe 33 can be adjusted, the valve cover 343 needs to be connected with the elastic member 342, when the valve cover 343 is under pressure, the elastic member 342 connected with the valve cover 343 is elastically deformed, and then the valve cover 343 moves towards the first water inlet 3220 and a part of the valve cover 343 is located in the first water inlet 3220, so that the water flow channel between the valve cover 343 and the first water inlet 3220 is gradually reduced from the maximum flow channel when water begins to be used, and is finally stabilized. The elastic member 342 will be described below with reference to the following embodiments.

In some embodiments of the present application, as shown in fig. 12a, the elastic member 342 may be a rubber rod 3421, a plurality of rubber rods 3421 are located in the housing 341 of the damping device 34, and the plurality of rubber rods 3421 are spaced along the circumference of the housing 341, one end of the rubber rod 3421 is connected to the housing 341, and the other end is connected to the valve cap 343, so that when the user stops using water, the water flow in the housing 341 is still, the valve cap 343 and the rubber rod 3421 are not stressed, the rubber rod 3421 is not elastically deformed, and the water flow passage between the valve cap 343 and the first water inlet 3320 is at the maximum state (see fig. 12 b), when the user uses water again, the water flow in the housing 341 starts flowing, passes through the water flow passage between the valve cap 343 and the first water inlet 3320, enters the water outlet pipe 32 to be heated by the residual heat, and the water temperature of the heated water is increased, in the process, the pressure in the housing 341 acts on the valve cap 343, so that the rubber rod 3421 connected to the valve cap 343 is elastically deformed, the valve cap 343 moves in the X direction, so that the water flow passage 343 and the water temperature of the water outlet pipe 3220 is gradually increased, and the water flow does not gradually decreases, and the water flow does not change in the process of the water flow passage of the water flow stop, and the water flow of the water flow passage is not gradually.

In other embodiments of the present application, as shown in fig. 8, the elastic member 342 may also be a spring, which is located in the housing 341, and one end of the spring is connected to one of the water inlet section 331 and the water outlet section 332, and the other end of the spring is connected to the valve cover 343 as a free end, so that when the user stops using water, the spring and the valve cover 343 are not stressed, and the water flow path between the valve cover 343 and the first water inlet 3220 is the largest, and when the user uses water, the pressure in the housing 341 acts on the valve cover 343, the spring connected to the valve cover 343 is compressed or stretched, specifically, as shown in fig. 9, when the spring is connected to the water outlet section 332, the spring is compressed when the user uses water again, and the valve cover connected to the spring moves toward the direction close to the first water inlet 3220, and a part of the spring can be located in the opening of the first water inlet 3220, and the water flow path between the valve cover 343 and the first water inlet 3220 is reduced, thereby achieving the purpose of neutralizing warm water in the water outlet pipe 32, which is not repeated here.

As shown in fig. 13, when the spring 3422 is connected to the water inlet section 331, when the user uses water again, the spring 3422 is stretched, the valve cover 342 connected to the spring 3422 moves toward the direction close to the first water inlet 3220, and a part of the spring can be located in the opening of the first water inlet 3220, at this time, the water flow channel between the valve cover 343 and the first water inlet 3220 is reduced, so as to achieve the purpose of neutralizing the temperature of hot water in the water outlet pipe 32, which is not described herein again.

In addition, in the case that the elastic member 342 is located on the spring 3422, it can be understood that due to the characteristics of the spring 3422, when the valve cover 343 is connected to the spring 3422 and located in the housing 341 of the damping device 34, it may move towards the direction deviating from the radial direction of the water outlet section 332, in order to make the valve cover 343 smoothly fit with the first water inlet 3220, as shown in fig. 14, the damping device 34 may further include a guiding column 345 and a connecting member 346, one end of the connecting member 346 is connected to the valve seat 5, and the other end is connected to the guiding column 345, so that the guiding column 345 may be inserted into the hollowed-out portion of the spring 3422, and play a guiding role to ensure that the valve cover 343 connected to the spring 3422 can move along the radial direction of the water outlet section 332.

It should be noted that, for example, the spring 3422 is disposed on the water outlet section 332, when the spring 3422 is disposed on the water inlet section 331 (see fig. 13), the corresponding guide posts 345 and the connecting member 346 can be disposed on the water inlet section 331.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A gas water heater, comprising:

a heat exchanger, the heat exchanger comprising:

a heat exchange zone;

a water inlet pipe in communication with the heat exchange zone of the heat exchanger;

the water outlet pipe is communicated with the heat exchange area of the heat exchanger;

the bypass pipe comprises a water inlet section and a water outlet section, the water inlet section is communicated with the water inlet pipe, and the water outlet section is communicated with the water outlet pipe; the water outlet section is provided with a first water inlet at one end close to the water inlet section, and the radial size of the first water inlet is gradually reduced from one end close to the water inlet section to one end far away from the water inlet section; and (c) a second step of,

a damping device, the damping device comprising:

one end of the shell is communicated with the water inlet section, and the other end of the shell is communicated with the water outlet section;

the elastic piece is positioned in the shell, one end of the elastic piece is connected with one of the water inlet section, the water outlet section and the shell, and the other end of the elastic piece is used as a free end;

the valve cover is positioned in the shell and close to the first water inlet, and the valve cover is connected with the free end of the elastic piece and can be matched with the first water inlet.

2. A gas water heater according to claim 1,

the valve cover is located between the water inlet section and the water outlet section, and a certain distance is reserved between the valve cover and the water inlet section.

3. A gas water heater according to claim 2,

the diameter of the bypass pipe is smaller than that of the water inlet pipe;

the diameter of the bypass pipe is smaller than that of the water outlet pipe.

4. A gas water heater according to claim 3,

the heat exchanger has:

the second water inlet is arranged in the heat exchange area and is communicated with the water inlet pipe so as to communicate the water inlet pipe with the heat exchange area; and the number of the first and second groups,

and the water outlet is arranged in the heat exchange area and is communicated with the water outlet pipe so as to communicate the water outlet pipe with the heat exchange area.

5. The gas water heater of claim 4, further comprising:

the heat exchange pipe is located in the heat exchange area, the second water inlet is formed in one end of the heat exchange pipe, and the water outlet is formed in the other end of the heat exchange pipe.

6. A gas water heater according to claim 1,

the first water inlet is a horn mouth.

7. A gas water heater according to claim 6,

the valve cover is a circular truncated cone matched with the first water inlet, the maximum radial dimension of the valve cover is larger than the minimum radial dimension of the first water inlet and smaller than the maximum radial dimension of the first water inlet, and the minimum radial dimension of the valve cover is smaller than the minimum radial dimension of the first water inlet;

or the valve cover is a cylinder matched with the first water inlet, and the radial size of the valve cover is larger than the minimum radial size of the first water inlet and smaller than the maximum radial size of the first water inlet.

8. The gas water heater of claim 7, further comprising:

the disk seat is established it is close to go out the water section the one end of water section, the horn mouth is established in the disk seat, and the orientation the section of intaking.

9. A gas water heater according to claim 8,

the elastic piece is a plurality of rubber rods, the plurality of rubber rods are located in the shell and are arranged at intervals along the circumferential direction of the shell, one end of each rubber rod is connected with the shell, and the other end of each rubber rod is used as the free end and is connected with the valve cover.

10. A gas water heater according to claim 9,

the elastic piece is a spring, the spring is located in the shell, one end of the spring is connected with one of the water inlet section and the water outlet section, and the other end of the spring is used as the free end and is connected with the valve cover.

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