Gas water heater

Abstract

The utility model discloses a gas water heater which comprises a water heater body which comprises a shell assembly and a heat exchange assembly, and the heat exchange assembly is arranged in the shell assembly. The pipeline assembly comprises a cold water pipe, a hot water pipe and a bypass water pipe, the water outlet end of the cold water pipe communicates with the water inlet end of the hot water pipe through the heat exchange assembly, and the bypass water pipe and the hot water pipe are arranged in parallel; the water storage device is arranged on the bypass water pipe and used for storing part of stored water in the pipeline assembly into the water storage device when a user closes water; the control valve is arranged on the bypass water pipe, located in the water inlet direction of the water storage device and used for controlling the on-off state of the bypass water pipe. According to the gas water heater, the problem that water stored in the heat exchange assembly of the water heater in a standing mode is continuously heated is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field especially relates to a gas water heater. BACKGROUND

[0002] In the process that the user uses the water heater, after closing the water, the residual heat in the water heater still continues to heat the stored water in the heat exchanger pipe, which causes the temperature of the stored water in the heat exchange pipe to be still very high, and the high-temperature stored water is easy to form scale on the inner wall of the heat exchange pipe. The heat cannot be timely transferred to the water at the scale deposition site, which affects the heat exchange effect of the heat exchanger, and even may cause the heat exchange pipe to deform, burn through, leak, and other quality problems. In addition, when the user uses water twice in a short time, the high-temperature stored water also causes the water temperature at the water outlet to change seriously, which affects the use experience. SUMMARY

[0003] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related, for this, the utility model provides a gas water heater, effectively solves the problem that the stored water in the heat exchange assembly of the water heater is continuously heated.

[0004] According to the above-mentioned gas water heater, the following technical scheme is adopted:

[0005] In some embodiments, a gas water heater comprises: a water heater body comprising a shell assembly and a heat exchange assembly, the heat exchange assembly being arranged in the shell assembly; a pipeline assembly comprising a cold water pipe, a hot water pipe, and a bypass water pipe, the water outlet end of the cold water pipe being connected in communication with the water inlet end of the hot water pipe through the heat exchange assembly, and the bypass water pipe being arranged in parallel with the hot water pipe; a water storage device arranged on the bypass water pipe and used for storing part of the stored water in the pipeline assembly in the water storage device when the user closes the water; and a control valve arranged on the bypass water pipe and located in the water inlet direction of the water storage device, and used for controlling the on-off state of the bypass water pipe.

[0006] In other embodiments, a gas water heater comprises: a water heater body comprising a shell assembly and a heat exchange assembly, the heat exchange assembly being arranged in the shell assembly; a pipeline assembly comprising a cold water pipe and a hot water pipe, the water outlet end of the cold water pipe being connected in communication with the water inlet end of the hot water pipe through the heat exchange assembly; a water storage device arranged on the hot water pipe and used for storing part of the stored water in the pipeline assembly in the water storage device when the user closes the water; and a control valve arranged on the hot water pipe and located in the water inlet direction of the water storage device, and used for controlling the on-off state of the hot water pipe.

[0007] In some embodiments, the water storage device comprises a water storage tank, an air bag and an air pump, the water storage tank is provided with a water storage cavity, a water inlet, a water outlet and a vent, the water storage cavity is in communication with the water inlet and the water outlet respectively, the air bag is arranged in the water storage cavity in a deformable manner, and the air pump is arranged outside the water storage tank and in communication with the inside of the air bag through the vent for inflating or deflating the air bag.

[0008] In some embodiments, the water storage device further comprises a pressure detection assembly arranged on the vent or the air bag for detecting the real-time air pressure in the air bag.

[0009] In some embodiments, the water storage device further comprises a stop valve arranged on the vent for controlling the on-off state of the vent.

[0010] In some other embodiments, the water storage device comprises a water storage tank, an air bag, an inflation assembly and a deflation assembly, the water storage tank is provided with a water storage cavity, a water inlet, a water outlet and a vent, the water storage cavity is in communication with the water inlet and the water outlet respectively, the air bag is arranged in the water storage cavity in a deformable manner, the inflation assembly is arranged outside the water storage tank and in communication with the inside of the air bag through the vent for inflating the air bag, and the deflation assembly is arranged on the air bag for deflating the air bag.

[0011] In some embodiments, the deflation assembly is arranged in the water storage tank, and the air bag is in communication with the water storage cavity through the deflation assembly; or the deflation assembly is arranged outside the water storage tank, and the water storage tank is further provided with an exhaust port, and the air bag is in communication with the deflation assembly through the exhaust port.

[0012] In some embodiments, the water storage device further comprises a pressure detection assembly arranged on the vent or the air bag for detecting the real-time air pressure in the air bag.

[0013] In some embodiments, a water flow detection assembly is arranged on the cold water pipe.

[0014] Compared with the prior art, the hot gas water heater has at least the following beneficial effects:

[0015] The hot gas water heater has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1is a structure schematic view of the gas water heater in the embodiment 1 of the utility model;

[0017] Figure 2 is a structure schematic view of the water storage device in the embodiment 1 of the utility model;

[0018] Figure 3 is a structure schematic view of the gas water heater in the embodiment 2 of the utility model.

[0019] In the drawing: 11 - shell assembly, 12 - heat exchange assembly, 13 - combustor assembly;21 - cold water pipe, 22 - hot water pipe, 23 - bypass water pipe;3 - water storage device, 31 - water storage tank, 311 - water storage cavity, 312 - water inlet, 313 - water outlet, 314 - air vent, 32 - air bag, 33 - air pump, 34 - pressure detection assembly, 35 - stop valve;4 - control valve;5 - controller;6 - water flow detection assembly. DETAILED DESCRIPTION

[0020] The following embodiments are used to illustrate the utility model, but the utility model is not limited by these embodiments. The specific embodiment of the utility model is modified or equivalent replacement is made to part technical features without departing from the spirit of the utility model scheme, and it should be covered in the technical scheme range of the utility model claimed.

[0021] Embodiment 1

[0022] Reference Figures 1-2 , the embodiment provides a kind of gas water heater, including water heater body, pipeline assembly, controller 5 and water flow detection assembly 6, water heater body includes shell assembly 11, heat exchange assembly 12 and combustor assembly 14, heat exchange assembly 12 is set in shell assembly 11 and it has heat exchange pipe (not shown in the drawing), combustor assembly 13 is set in shell assembly 11 and is located at the bottom of heat exchange assembly 12.Pipeline assembly includes cold water pipe 21, hot water pipe 22 and bypass water pipe 23, the water outlet end of cold water pipe 21 is connected with the water inlet end of hot water pipe 22 through the heat exchange pipe in heat exchange assembly 12, bypass water pipe 23 and hot water pipe 22 are connected in parallel, and water flow detection assembly 6 is provided on cold water pipe 21.

[0023] Further, the gas water heater further includes water storage device 3 and control valve 4, water storage device 3 is set on bypass water pipe 23, water storage device 3 is used to store part of water in pipeline assembly in water storage device 3 when user closes water, water storage device 3 is also used to discharge the storage water in water storage device 3 when user opens water.Control valve 4 is set on bypass water pipe 23 and is located in the water inlet direction of water storage device 3, for controlling the on-off state of hot water pipe 22.Controller 5 is electrically connected with water flow detection assembly 6, control valve 4, water storage device 3 and combustor assembly 14 respectively.

[0024] When the user turns off the water at the water outlet end, the water storage device 3 can store part of the water in the pipeline assembly in the water storage device 3, so that the residual heat in the water heater heats the cold water newly entering the heat exchange assembly, effectively solving the problem that the stored water in the heat exchange assembly is continuously heated, preventing scale from forming in the heat exchange assembly of the gas water heater, and improving the use reliability of the water heater. When the user turns on the water again, the water storage device 3 can discharge the stored water in the water storage device 3, so that the stored water is mixed with the newly heated water, buffers the water temperature, prevents the water temperature from suddenly changing, effectively solves the problem of sudden change of water temperature when the user uses water for a short time, and improves the user experience.

[0025] Reference Figures 1-2 In this embodiment, the water storage device 3 includes a water storage tank 31, an air bag 32, and an air pump 33 electrically connected with the controller 5. The water storage tank 31 is provided with a water storage cavity 311, a water inlet 312, a water outlet 313, and a vent 314. The water storage cavity 311 is in communication with the water inlet 312 and the water outlet 313, respectively. The air bag 32 is deformedly arranged in the water storage cavity 311. The air pump 33 is arranged outside the water storage tank 31 and is in communication with the inside of the air bag 32 through the vent 314. The air pump 33 is used to inflate or deflate the air bag 32, so that the same air pump 33 is used to inflate or deflate the air bag 32, the structure is simpler, and the cost is lower. The bypass water pipe 23 includes a water inlet section and a water outlet section. The opposite ends of the water inlet section are in communication with the hot water pipe 22 and the water inlet 312 of the water storage tank 31, respectively. The water outlet section is in communication with the hot water pipe 22 and the water outlet 313 of the water storage tank 31, respectively. The control valve 4 is a switch valve or a solenoid valve, which is installed on the water inlet section of the bypass water pipe 23 and is used to control the water flow on-off state of the bypass water pipe 23, so as to control the water storage of the water storage tank 31. It can be seen that by arranging the water storage device 3 on the bypass water pipe 23, the water can be naturally discharged, the requirements of the air pump 33 are different, and the water temperature at the water outlet end is more conducive to mixing, thereby enhancing the constant temperature effect.

[0026] The water storage device 3 further includes a pressure detection assembly 34 electrically connected with the controller 5. The pressure detection assembly 34 is arranged on the vent 314 or the air bag 32 and is used to detect the real-time air pressure in the air bag 32. Since the detection object of the pressure detection assembly 34 is air pressure, compared with the detection object of water pressure, the pressure detection assembly 34 is less affected by water pressure fluctuation, the detection result is more stable and reliable, and misidentification abnormality is less likely to occur. In addition, the water storage device 3 further includes a shut-off valve 35 electrically connected with the controller 5. The shut-off valve 35 is arranged on the vent 314 and is used to control the on-off state of the vent 314.

[0027] In this embodiment, the controller 5 controls the operation of the control valve 4 and the air pump 33. Before leaving the factory, the air pressure of the air bag 32 is set, and the compressed volume of the air bag 32 corresponds to the water storage volume V in the heat exchange pipe of the heat exchange assembly 12. The following will be described in combination with Figures 1-2To illustrate the working principle of the gas water heater:

[0028] ①Machine running state, the control valve 4 default closed valve, bypass water pipe 23 not water;

[0029] ②When the user in the water end off, the machine is identified to be off, the controller 5 controls the control valve 4 to open the valve, and controls the air pump 33 of the water storage device 3 to exhaust air, negative pressure makes the stored water in the heat exchange assembly 12 flow into the water storage cavity 311 of the water storage tank 31, at this time the remaining heat in the water heater heats the cold water entering the heat exchange assembly 12, which can effectively solve the problem of continuous heating of the stored water in the heat exchange assembly and prevent the heat exchange assembly from being scaled;

[0030] ③Judge whether the user is continuously using water, if the water is turned on again within 60s, the control valve 4 is closed, the air pump is pumped to the set pressure P, the stored water in the water storage tank 31 flows out, mixes with the hot water pipe 22 through the bypass water pipe 23, and then flows out from the water outlet, which realizes the buffering of the water temperature and prevents the water temperature from changing suddenly, thereby solving the problem of water temperature change when the user uses water again in a short time;

[0031] ④If the water is not turned on again within 60s, it is determined that the water use is completed, the control valve 4 is not closed, and the air pump 33 is pumped to the set pressure P, and then the control valve 4 is closed.

[0032] Example 2

[0033] Reference Figure 3 The difference between this embodiment and example 1 is that the specific structure of the pipeline assembly and the installation position of the water storage device 3 are different. In this embodiment, the water heater body includes a shell assembly 11 and a heat exchange assembly 12, and the heat exchange assembly 12 is arranged in the shell assembly 11. The pipeline assembly includes a cold water pipe 21 and a hot water pipe 22, and the water outlet end of the cold water pipe 21 is connected with the water inlet end of the hot water pipe 22 through the heat exchange pipe in the heat exchange assembly 12. The water storage device 3 is arranged on the hot water pipe 22 and is used to store part of the stored water in the pipeline assembly in the water storage device 3 when the user turns off the water, and is also used to discharge the stored water in the water storage device 3 when the user turns on the water. The control valve 4 is arranged on the hot water pipe 22 and located in the water inlet direction of the water storage device 3, and is used to control the on-off state of the hot water pipe 22.

[0034] It can be seen that compared with example 1, the gas water heater of this embodiment omits the bypass water pipe 23, and the overall water circuit is simpler.

[0035] Example 3

[0036] The difference between the embodiment and the embodiment 1 or 2 is that the specific structure of the water storage device 3 is different. In the embodiment, the water storage device 3 comprises a water storage tank 31, an air bag 32, an air charging assembly electrically connected with the controller 5 and an air discharging assembly electrically connected with the controller 5, the water storage tank 31 is provided with a water storage cavity 311, a water inlet 312, a water outlet 313 and a vent 314, and the water storage cavity 311 is communicated with the water inlet 312 and the water outlet 313 respectively. The air bag 32 is deformedly arranged in the water storage cavity 311. The air charging assembly is arranged outside the water storage tank 31 and is communicated with the inside of the air bag 32 through the vent 314, and is used for charging the air bag 32. The air discharging assembly is arranged on the air bag 32 and is used for discharging the air bag 32, so that the air charging and discharging structures are independent of each other.

[0037] Specifically, the air charging assembly comprises an air charging valve and an air charging component. The air discharging assembly comprises an air discharging valve, and of course the air discharging assembly can also comprise an air discharging component. The air discharging assembly can be arranged in the water storage tank 31, and the air bag 32 is communicated with the water storage cavity 311 through the air discharging assembly, so as to discharge the gas in the air bag into the water storage cavity 311. Of course, the air discharging assembly can also be arranged outside the water storage tank 31, and the water storage tank 31 is also provided with an air outlet, and the air bag 32 is communicated with the air discharging assembly through the air outlet, so as to discharge the gas in the air bag to the outside of the water storage tank.

[0038] The water storage device 3 further comprises a pressure detection assembly 34 electrically connected with the controller 5, and the pressure detection assembly 34 is arranged on the vent 314 or the air bag 32 and is used for detecting the real-time air pressure in the air bag 32. Since the detection object of the pressure detection assembly 34 is air pressure, compared with the detection object of water pressure, it is less affected by water pressure fluctuation, the detection result is more stable and reliable, and misrecognition abnormality is not easy to occur.

[0039] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A gas water heater, characterised in that, The application relates to a water heater, which comprises a water heater body, a pipeline assembly, a water storage device and a control valve. The water heater body comprises a shell assembly (11) and a heat exchange assembly (12), wherein the heat exchange assembly (12) is arranged in the shell assembly (11). The pipeline assembly comprises a cold water pipe (21), a hot water pipe (22) and a bypass water pipe (23), wherein the water outlet end of the cold water pipe (21) is connected with the water inlet end of the hot water pipe (22) through the heat exchange assembly (12), and the bypass water pipe (23) is arranged in parallel with the hot water pipe (22). The water storage device (3) is arranged on the bypass water pipe (23) and is used for storing part of stored water in the pipeline assembly in the water storage device (3) when a user stops water. The control valve (4) is arranged on the bypass water pipe (23) and is located in the water inlet direction of the water storage device (3), and is used for controlling the on-off state of the bypass water pipe (23).

2. A gas water heater, characterised in that, The water heater body comprises a shell assembly (11) and a heat exchange assembly (12), wherein the heat exchange assembly (12) is arranged in the shell assembly (11). The pipeline assembly comprises a cold water pipe (21) and a hot water pipe (22), wherein the water outlet end of the cold water pipe (21) is connected with the water inlet end of the hot water pipe (22) through the heat exchange assembly (12). The water storage device (3) is arranged on the hot water pipe (22) and is used for storing part of stored water in the pipeline assembly in the water storage device (3) when a user stops water. The control valve (4) is arranged on the hot water pipe (22) and is located in the water inlet direction of the water storage device (3), and is used for controlling the on-off state of the hot water pipe (22). The water storage device (3) comprises a water storage tank (31), an air bag (32) and an air pump (33), the water storage tank (31) is provided with a water storage cavity (311), a water inlet (312), a water outlet (313) and a vent (314), the water storage cavity (311) is connected with the water inlet (312) and the water outlet (313) respectively, The air bag (32) is arranged in the water storage cavity (311) in a deformable mode, the air pump (33) is arranged outside the water storage tank (31) and is connected with the inside of the air bag (32) through the vent (314), and is used for inflating or deflating the air bag (32).

3. A gas water heater as claimed in claim 1 or 2 wherein, The water storage device (3) further comprises a pressure detection assembly (34), which is arranged on the vent (314) or the air bag (32) and is used for detecting the real-time air pressure in the air bag (32). The water storage device (3) further comprises a stop valve (35), which is arranged on the vent (314) and is used for controlling the on-off state of the vent (314).

4. A gas water heater as claimed in claim 3 wherein, The water storage device (3) comprises a water storage tank (31), an air bag (32), an inflation assembly and a deflation assembly, the water storage tank (31) is provided with a water storage cavity (311), a water inlet (312), a water outlet (313) and a vent (314), the water storage cavity (311) is connected with the water inlet (312) and the water outlet (313) respectively, 5. A gas water heater as claimed in claim 3 wherein, ​ 6. A gas water heater as claimed in claim 1 or 2 wherein, ​ The air bag (32) is deformedly arranged in the water storage cavity (311), the inflating assembly is arranged outside the water storage tank (31) and is communicated with the inside of the air bag (32) through the air vent (314), and is used for inflating the air bag (32); the deflating assembly is arranged on the air bag (32) and is used for deflating the air bag (32).

7. A gas water heater as claimed in claim 6 wherein, The deflating assembly is arranged in the water storage tank (31), and the air bag (32) is communicated with the water storage cavity (311) through the deflating assembly; or The deflating assembly is arranged outside the water storage tank (31), the water storage tank (31) is further provided with an exhaust port, and the air bag (32) is communicated with the deflating assembly through the exhaust port.

8. A gas water heater as claimed in claim 6 wherein, The water storage device (3) further comprises a pressure detection assembly (34), which is arranged on the air vent (314) or the air bag (32) and is used for detecting the real-time air pressure in the air bag (32).

9. A gas water heater as claimed in claim 1 or 2 wherein, A water flow detection assembly (6) is arranged on the cold water pipe (21).

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