CN220169696U - Water tank and solar water heater - Google Patents

Abstract

The utility model belongs to the technical field of water heaters, and particularly relates to a water tank and a solar water heater. The utility model aims to solve the problems of complex operation and low efficiency of the existing solar water heater that the water tank needs to be detached for replacement when the heat exchange medium is in the water tank. The water tank comprises the inner container, the heat exchanger and the electronic thermostatic valve, wherein the heat exchanger is coated on the outer side of the inner container, the bottom end of the heat exchanger is provided with the medium discharge port, the medium discharge port is connected with the medium discharge pipe, the medium discharge pipe is internally provided with the plug, the plug is detachably arranged on the medium discharge pipe so as to discharge heat exchange medium in the heat exchanger from the medium discharge pipe, and the whole water tank is not required to be detached for replacement, so that the replacement of the heat exchange medium is simple and convenient, and the efficiency is high. The electronic thermostatic valve is configured to adjust the opening degrees of the first inlet and the second inlet according to the water temperature of the first inlet so that the water temperature of the water outlet is within a set temperature range, and the stability of the water outlet temperature of the solar water heater is ensured.

Description

Water tank and solar water heater

Technical Field

The utility model belongs to the technical field of water heaters, and particularly relates to a water tank and a solar water heater.

Background

The water heater is a device which can raise the temperature of cold water to become hot water in a certain time by various physical principles and is widely applied to life. According to different heating modes, the water heater is generally divided into an electric water heater, a gas water heater, a solar water heater and the like. The solar water heater has the advantages of energy conservation, environmental protection, no noise and the like, and is widely applied.

In the related art, a solar water heater includes a water tank and a heat collector. In general, the heat collector is placed outdoors where sunlight is more irradiated, and the water tank is connected to the heat collector. The heat collector can absorb solar energy and convert light energy into heat energy, so that a heat exchange medium in the heat collector is heated. The heated heat exchange medium may be circulated in the heat collector and the water tank to heat the water in the water tank.

However, when the heat exchange medium in the water tank is needed to be disassembled, the water tank is replaced, the operation is complex, and the efficiency is low.

Disclosure of Invention

In order to solve the problems in the prior art, namely, the technical problems of complex operation and low efficiency of the existing solar water heater that the water tank needs to be detached for replacement when the heat exchange medium in the water tank is solved.

The utility model provides a water tank, comprising:

the inner container is provided with a water storage cavity; the inner container is connected with a water inlet pipe and a water outlet pipe which are communicated with the water storage cavity;

the heat exchanger is coated on the outer side of the inner container, a medium discharge port is arranged at the bottom end of the heat exchanger, the medium discharge port is connected with a medium discharge pipe, and a plug is arranged in the medium discharge pipe; the heat exchanger is also provided with a medium inlet and a medium outlet, the medium inlet and the medium outlet are both positioned above the medium discharge port, and the medium inlet and the medium outlet are used for being connected with the heat collector;

the electronic thermostatic valve is provided with a first inlet, a second inlet and a water outlet, the first inlet is communicated with the water outlet pipe, the second inlet is communicated with the cold water pipe, and the water outlet is used for being connected with water equipment; the electronic thermostat valve is configured to adjust the opening degrees of the first inlet and the second inlet according to the water temperature of the first inlet so that the water temperature of the water outlet is within a set temperature range.

In the optional technical scheme of the water tank, a sealing ring is arranged between the plug and the medium discharge pipe, and the plug is in threaded connection with the medium discharge pipe.

In an alternative aspect of the above water tank, a switching valve is installed on the medium discharge pipe, and the switching valve is configured to open or close the medium discharge pipe; the on-off valve is configured to open when the plug is disengaged from the media drain.

In the above water tank, the heat exchanger is a heat exchange tube wound on the outer side of the liner, and the medium discharge port is disposed at the bottom end of the heat exchange tube.

In the above water tank, the heat exchanger is a medium container wrapped on the outer side of the inner container, a containing cavity for containing heat exchange medium is formed between the medium container and the inner container, and the medium discharge port is arranged at the bottom end of the medium container.

In an optional technical scheme of the water tank, the water tank further comprises a connecting pipe and a three-way joint, the water inlet pipe comprises a first pipe section and a second pipe section, and the first pipe section is connected with the inner container; the three-way joint is respectively connected with the first pipe section, the second pipe section and the first end of the connecting pipe, the other end of the connecting pipe is connected with the second inlet, a first one-way valve is arranged on the connecting pipe and is configured to enable water flow to flow from the water inlet pipe to the second inlet in a one-way mode.

In an alternative aspect of the above water tank, a second one-way valve is provided on the first pipe section, and the second one-way valve is configured to enable one-way flow of water from the first pipe section into the liner.

In an alternative solution of the above water tank, a filter is mounted on the second pipe section.

In the optional technical scheme of the water tank, the water tank further comprises an outer shell, and the inner container, the heat exchanger and the electronic thermostatic valve are all arranged in the outer shell; the shell is provided with a through hole, so that the water inlet pipe, the water outlet pipe and the medium discharge pipe extend to the outer side of the shell, and the plug is positioned at the outer side of the shell.

In the optional technical scheme of the water tank, an insulation layer is arranged between the outer shell and the heat exchanger.

The solar water heater includes: the heat collector and the water tank are characterized in that a medium inlet and a medium outlet of a heat exchanger of the water tank are respectively connected with the heat collector.

It can be understood by those skilled in the art that the solar water heater comprises the water tank and the heat collector, the water tank comprises the inner container, the heat exchanger and the electronic thermostatic valve, the inner container is provided with the water storage cavity, the inner container is connected with the water inlet pipe and the water outlet pipe which are communicated with the water storage cavity, the heat exchanger is coated on the outer side of the inner container, the bottom end of the heat exchanger is provided with the medium discharge port, the medium discharge port is connected with the medium discharge pipe, the plug is arranged in the medium discharge pipe and is detachably arranged on the medium discharge pipe to plug or open the medium discharge pipe, so that the heat exchange medium in the heat exchanger is conveniently discharged from the medium discharge pipe, and the whole water tank is not required to be detached for replacement, so that the replacement of the heat exchange medium is simple and convenient, and the efficiency is high. The heat exchanger is also provided with a medium inlet and a medium outlet, both the medium inlet and the medium outlet are positioned above the medium discharge port, and the medium inlet and the medium outlet are respectively connected with the heat collector, so that the recycling of heat exchange medium is realized. The electronic thermostatic valve is provided with a first inlet, a second inlet and a water outlet, and the first inlet is communicated with the water outlet pipe so as to provide hot water for the electronic thermostatic valve to adjust the water temperature; the second inlet is used for communicating with a cold water pipe to provide cold water for adjusting the water temperature of the electronic thermostatic valve; the water outlet is used for connecting water using equipment so as to discharge water with the water temperature regulated to the water using equipment; the electronic thermostatic valve is configured to adjust the opening degrees of the first inlet and the second inlet according to the water temperature of the first inlet, so that the proportion of hot water of the first inlet and cold water of the second inlet is adjusted, the water temperature of the water outlet is in a set temperature range, the stability of the water outlet temperature of the solar water heater is ensured, the scalding problem caused by using solar hot water is avoided, the user is not required to adjust repeatedly, and the electronic thermostatic valve is convenient and practical.

Drawings

Alternative implementations of the water tank and the solar water heater according to embodiments of the present utility model are described below with reference to the accompanying drawings. The attached drawings are as follows:

fig. 1 is a schematic structural view of a water tank according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a water tank according to a second embodiment of the present utility model;

fig. 3 is a schematic structural view of a water tank according to a third embodiment of the present utility model.

In the accompanying drawings: 100: an inner container; 101: a water storage chamber; 110: a water inlet pipe; 111: a first pipe section; 112: a second pipe section; 120: a water outlet pipe; 130: a second one-way valve; 140: a filter; 200: a heat exchanger; 201: a medium discharge port; 210: a medium discharge pipe; 211: a plug; 212: a switch valve; 220: a media inlet; 230: a medium outlet; 300: an electronic thermostatic valve; 301: a first inlet; 302: a second inlet; 303: a water outlet; 400: a connecting pipe; 410: a first one-way valve; 500: an outer shell.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the embodiments of the present utility model, and are not intended to limit the protection scope of the embodiments of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application.

Further, it should be noted that, in the description of the embodiments of the present utility model, terms such as directions or positional relationships indicated by the terms "inner", "outer", and the like are based on directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or the member must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, it should be noted that, in the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two components. The specific meaning of the above terms in the embodiments of the present utility model can be understood by those skilled in the art according to the specific circumstances.

The water heater is a device which can raise the temperature of cold water to become hot water in a certain time by various physical principles and is widely applied to life. According to different heating modes, the water heater is generally divided into an electric water heater, a gas water heater, a solar water heater and the like. The solar water heater has the advantages of energy conservation, environmental protection, no noise and the like, and is widely applied.

In the related art, a solar water heater includes a water tank and a heat collector. In general, the heat collector is placed outdoors where sunlight is more irradiated, and the water tank is connected to the heat collector. The heat collector can absorb solar energy and convert light energy into heat energy, so that a heat exchange medium in the heat collector is heated. The heated heat exchange medium may be circulated in the heat collector and the water tank to heat the water in the water tank. However, when the heat exchange medium in the water tank is needed to be disassembled, the water tank is replaced, the operation is complex, and the efficiency is low.

When the solar illumination is sufficient, the water temperature of the water outlet of the solar water heater reaches 90 ℃, and in the related technology, the water mixing valve is arranged at the water using end of the solar water heater so as to adjust the water outlet temperature of water using equipment such as a faucet, a shower nozzle and the like to a proper temperature. With the continuous use of the solar water heater, the water outlet temperature is reduced, the user needs to adjust repeatedly, the scald problem is easily caused by improper operation, and the safety is poor

In view of the above, the embodiment of the utility model is provided with the electronic thermostatic valve in the solar water tank, so that the outlet water temperature is regulated, the stability of the outlet water temperature is ensured, the problem of scalding of high-temperature water is avoided, and the safety of the solar water heater is improved; a medium discharge port is formed in the bottom end of the medium liner of the water tank and is used for replacing a heat exchange medium, so that the operation is simple and convenient, and the discharge is clean; and after the medium is discharged, plugging by using a plug.

The following describes alternative technical schemes of the water tank and the solar water heater according to the embodiment of the utility model with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a water tank according to an embodiment of the present utility model.

Referring to fig. 1, an embodiment of the present utility model provides a water tank including: bladder 100, heat exchanger 200, and electronic thermostat valve 300.

The liner 100 has a water storage chamber 101 for storing water. As shown in fig. 1, the liner 100 may be disposed vertically, but this is not limitative, and the liner 100 may be disposed laterally. The liner 100 may include a middle barrel and a sealing head disposed at two sections of the middle barrel, the sealing head is welded with the middle barrel, and the middle barrel is cylindrical. Of course, this is not a limitation on the shape of the liner 100, and the liner 100 may be rectangular parallelepiped.

The liner 100 is connected with a water inlet pipe 110 and a water outlet pipe 120 which are communicated with the water storage cavity 101, the water inlet pipe 110 is used for inputting cold water into the water storage cavity 101, and the water outlet pipe 120 is used for discharging hot water in the water storage cavity 101. The water inlet pipe 110 and the water outlet pipe 120 extend into the water storage cavity 101, and the end part of the water inlet pipe 110 in the water storage cavity 101 is lower than the end part of the water outlet pipe 120 in the water storage cavity 101, so that hot water is conveniently accumulated in the water storage cavity 101, and the water outlet pipe 120 is conveniently used for discharging the hot water.

Optionally, the water inlet pipe 110 and the water outlet pipe 120 are disposed on the same side of the liner 100, so that the water inlet pipe 110 and the water outlet pipe 120 are convenient to install and connect through pipelines.

The heat exchanger 200 is wrapped on the outer side of the liner 100 and is used for exchanging heat with water in the liner 100. The bottom end of the heat exchanger 200 is provided with a medium discharge port 201, and the medium discharge port 201 is used for discharging a medium. Optionally, the medium discharge port 201 is disposed at the lowest position at the bottom end of the heat exchanger 200, so as to facilitate evacuation of the heat exchange medium. The medium discharge port 201 is connected to a medium discharge pipe 210, and a plug 211 is installed in the medium discharge pipe 210. The plug 211 is detachably mounted on the medium discharge pipe 210, and the plug 211 is mounted on the medium discharge pipe 210 to plug the medium discharge pipe 210, so that the heat exchange medium is stored in the heat exchanger 200; the plug 211 is detached from the medium discharge pipe 210, the medium discharge pipe 210 is opened, and the heat exchange medium in the heat exchanger 200 flows out of the medium discharge pipe 210.

In the drawings, the medium discharge pipe 210 is a straight pipe extending vertically to facilitate the discharge of the heat exchange medium. Of course, this is not limitative, and the medium discharge pipe 210 may be, for example, a bent pipe, for example, the medium discharge pipe 210 may be an L-shaped bent pipe with a downward opening, etc., so long as the entire discharge of the heat exchange medium can be achieved, and accumulation of the heat exchange medium in the medium discharge pipe 210 is avoided.

According to the embodiment of the utility model, the medium discharge pipe 210 is arranged at the medium discharge port 201, so that the arrangement position of the plug 211 is flexible, and the disassembly and the installation are convenient.

There are various connection modes of the plug 211 and the medium discharge pipe 210, for example, the plug 211 is in threaded connection with the medium discharge pipe 210, for example, the plug 211 is in flange connection with the medium discharge pipe 210, for example, the plug 211 is clamped with the medium discharge pipe 210; of course, the plug 211 and the medium drain pipe 210 are connected by various connection modes at the same time, for example, the plug 211 is clamped with the medium drain pipe 210, and the plug 211 and the medium drain pipe 210 are fixedly connected by screws.

In some possible implementations, a sealing ring is disposed between the plug 211 and the medium drain 210, so as to improve the tightness between the plug 211 and the medium drain 210, and prevent the medium drain 210 from leaking heat exchange medium. And, the plug 211 is in threaded connection with the medium discharge pipe 210, and the connection mode is simple and reliable. For example, the plug 211 is provided with external threads, and the medium discharge pipe 210 is provided with internal threads; for another example, the plug 211 is provided with an internal thread, and the medium discharge pipe 210 is provided with an external thread, so that the threaded connection of the plug 211 and the medium discharge pipe 210 is realized.

Fig. 2 is a schematic structural diagram of a water tank according to a second embodiment of the present utility model.

Referring to fig. 2, in some embodiments, a switching valve 212 is installed on the medium discharge pipe 210, and the switching valve 212 is configured to open or close the medium discharge pipe 210; when the switching valve 212 is opened, the medium discharge pipe 210 is turned on; when the on-off valve 212 is closed, the medium discharge pipe 210 is blocked. The on-off valve 212 is configured to be opened when the blocking head 211 is separated from the medium discharge pipe 210, so that when the heat exchange medium in the heat exchanger 200 needs to be discharged, the blocking head 211 is detached from the medium discharge pipe 210, and then the on-off valve 212 is opened, thereby allowing the heat exchange medium to be discharged from the medium discharge pipe 210. By the arrangement, the heat exchange medium is conveniently discharged and is prevented from being discharged and dispersed in the process of disassembling the plug 211.

Optionally, the switch valve 212 is a mechanical switch valve, and the user only needs to open the switch valve 212 after detaching the plug 211, so that the operation is simple. When the water tank is provided with the outer shell, the switch valve 212 can be arranged on the outer side of the outer shell, so that the operation is convenient; alternatively, the on-off valve 212 is disposed inside the outer case, and an operation opening is provided on the outer case, thereby facilitating the opening and closing of the on-off valve 212.

Alternatively, the switch valve 212 may be an electronic valve, and the controller of the solar water heater is used to control the switch of the electronic valve, so as to conduct and block the medium discharge pipe 210.

The heat exchanger 200 is further provided with a medium inlet 220 and a medium outlet 230, the medium inlet 220 and the medium outlet 230 are both positioned above the medium discharge port 201, the medium inlet 220 and the medium outlet 230 are used for being connected with a heat collector, a heat exchange medium is heated by solar energy in the heat collector, the heated heat exchange medium enters the heat exchanger 200 through the medium inlet 220 to exchange heat with water in the liner 100, and then the heat exchange medium reenters the heat collector through the medium outlet 230 to be heated, and the circulation is performed so as to heat the water in the liner 100.

When the heat exchange medium is discharged from the medium discharge pipe 210, the medium inlet 220 is opened, so that the heat exchange medium can be discharged from the medium discharge pipe 210.

When the heat exchange medium needs to be refilled, the plug 211 is connected with the medium discharge pipe 210 to plug the medium discharge pipe 210, and the switching valve 212 is closed; the medium inlet 20 is opened to inject new heat exchange medium.

In some embodiments, referring to fig. 1 and 2, the heat exchanger 200 is a medium container wrapped on the outer side of the inner container 100, the medium container is in a shell shape, a containing cavity for containing a heat exchange medium is formed between the medium container and the inner container 100, and a medium discharge port 201 is arranged at the bottom end of the medium container, so that the heat exchange medium in the heat exchanger 200 can be discharged. Optionally, at least part of the bottom wall of the medium container is an inclined bottom wall, and the medium discharge port 201 is disposed at the bottom end of the inclined bottom wall, so as to facilitate the removal of the heat exchange medium in the heat exchanger 200.

In other embodiments, fig. 3 is combined, where fig. 3 is a schematic structural diagram of a water tank according to a third embodiment of the present utility model. The heat exchanger 200 is a heat exchange tube wound on the outer side of the liner 100, two ends of the heat exchange tube are respectively provided with a medium inlet 220 and a medium outlet 230, a medium discharge port is arranged at the bottom end of the heat exchange tube, and specifically, the medium discharge port is arranged on the heat exchange tube at the lowest end.

The electronic thermostatic valve 300 of the embodiment of the utility model is provided with a first inlet 301, a second inlet 302 and a water outlet 303, wherein the first inlet 301 is communicated with the water outlet pipe 120, so that hot water is provided for adjusting the water temperature of the electronic thermostatic valve 300; the second inlet 302 is used for communicating with a cold water pipe, and in the embodiment of the utility model, the second inlet 302 is used for communicating with a tap water pipe to provide cold water for adjusting the water temperature of the electronic thermostatic valve 300; the water outlet 303 is used for connecting water using equipment so as to discharge water with the water temperature adjusted to the water using equipment; the electronic thermostat valve 300 is configured to adjust the opening degrees of the first inlet 301 and the second inlet 302 according to the water temperature of the first inlet 301, thereby adjusting the ratio of the hot water of the first inlet 301 and the cold water of the second inlet 302 so that the water temperature of the water outlet 303 is within a set temperature range.

According to the embodiment of the utility model, the temperature sensor is arranged at the first inlet 301 to detect the water temperature of the first inlet 301; alternatively, a temperature sensor is provided on the outlet pipe 120 to detect the outlet water temperature of the outlet pipe 120, thereby determining the water temperature of the first inlet 301.

There are various ways in which the electronic thermostat 300 adjusts the opening degrees of the first inlet 301 and the second inlet 302, for example, the electronic thermostat 300 adopts an electrode to drive a valve core to move, so as to adjust the opening degrees of the first inlet 301 and the second inlet 302; for another example, the electronic thermostatic valve 300 adopts electromagnetic driving valve core to move, so that the opening degree of the first interface 301 and the opening degree of the second inlet 302 are adjusted. The embodiment of the present utility model does not limit the specific structure of the electronic thermostat valve 300.

The second inlet 302 of the electronic thermostat valve 300 may be connected to the tap water pipe solely by a pipe, or the second inlet 302 of the electronic thermostat valve 300 may be connected to the water inlet pipe 110.

With continued reference to fig. 1 to 3, the water tank according to the embodiment of the present utility model further includes a connection pipe 400 and a three-way joint, and the water inlet pipe 110 includes a first pipe section 111 and a second pipe section 112, the first pipe section 111 is connected to the liner 100, and at least a portion of the first pipe section 111 extends into the liner 100.

The three-way joint has three ports connected to the first pipe section 111, the second pipe section 112 and the first end of the connection pipe 400, respectively, and the other end of the connection pipe 400 is connected to the second inlet 302, so that the second inlet 302 of the electronic thermostatic valve 300 is connected to the water inlet pipe 110 through the connection pipe 400, thereby providing cold water for adjusting the water temperature of the electronic thermostatic valve 300.

In the embodiment of the present utility model, the first check valve 410 is provided on the connection pipe 400, and the first check valve 410 is configured to enable the water flow to flow from the water inlet pipe 110 to the second inlet 302 in a unidirectional manner, so that the water in the second inlet 302 can be prevented from flowing to the water inlet pipe 110 in a reverse direction, and the stability of the water flow direction is ensured. The first check valve 410 may be a mechanical valve, and the first check valve 410 may also be an electronic check valve, which is opened and closed under the control of the control device.

The first pipe section 111 of the embodiment of the present utility model is provided with a second one-way valve 130, and the second one-way valve 130 is configured to enable water flow to flow from the first pipe section 111 to the liner 100 in a one-way manner, so as to avoid reverse flow of the water flow. The second check valve 130 may be a mechanical valve, and the second check valve 130 may also be an electronic check valve, which is opened and closed under the control of the control device.

By arranging the first check valve 410 and the second check valve 130, the embodiment of the utility model ensures that the water in the second pipe section 112 flows unidirectionally from the first pipe section 111 to the liner 100, or the water in the second pipe section 112 flows unidirectionally from the connecting pipe 400 to the electronic thermostatic valve 300, so that the reverse flow of the water flow is avoided, and the directionality of the water flow is ensured.

The second pipe section 112 of the embodiment of the present utility model is used for connecting with a tap water pipe to provide cold water for adjusting the water temperature of the liner 100 and the electronic thermostat 300. The second pipe section 112 is provided with a filter 140 so as to filter and purify tap water and play a role in purifying water.

Alternatively, the filter 140 may include a housing having an installation space, a filter screen, and a filter cartridge, both of which are installed in the housing, and the housing is installed on the second pipe segment 112. Wherein, the filter screen plays the effect of filtering impurity, in order to improve the filter effect, the filter screen can set up the multilayer, for example one-level filter screen, second grade filter screen, tertiary filter screen etc. the filtration precision of filter screen improves in proper order. Wherein, the filter element can be filled with activated carbon materials for removing impurities such as fine particles, bacteria, heavy metals and the like contained in water and absorbing chlorine, and the filter element can be filled with substances such as calcium bisulfide and the like so as to remove residual chlorine in water. Of course, the residual chlorine in the water may be ion-exchanged by using a film of a yin-yang resin or may be removed by a neutralization reaction of vitamin C and chlorine gas. The embodiment of the utility model does not limit the specific chlorine removal, filtration mode and the like of the filter element.

Optionally, a water softening module may be further disposed on the second pipe section 112, to play a role in softening water. The water softening module can adopt the existing structure, for example, the inside of the water softening module is filled with the renewable ion exchange resin, so as to play a role in softening water.

Optionally, be provided with the buffer tank on the outlet pipe 120, the buffer tank is located the one side that electronic thermostatic valve 300 deviates from inner bag 100, plays the hot water of temporary storage effect to improve the stability of water equipment water outlet temperature, avoid appearing suddenly and suddenly hot's problem, do benefit to the improvement user experience degree.

With continued reference to fig. 1 to 3, the water tank according to the embodiment of the present utility model further includes an outer case 500, and the inner container 100, the heat exchanger 200, and the electronic thermostat 300 are all installed in the outer case 500, and the outer case 500 not only can play a role in protection, but also can make the water tank form a whole, thereby facilitating installation.

The outer case 500 is provided with a through hole so that the water inlet pipe 110, the water outlet pipe 120 and the medium discharge pipe 210 extend to the outside of the outer case 500, facilitating the connection of pipes; the plug 211 is positioned at the outer side of the outer shell 500, so that the plug 211 can be conveniently disassembled and assembled to replace the heat exchange medium. The filter 140 and the connection pipe 400 are installed in the outer case 500.

Optionally, an insulation layer is disposed between the outer shell 500 and the heat exchanger 200, which may be a foaming layer or the like, to perform an insulation function.

The embodiment of the utility model also provides a solar water heater, which comprises: the medium inlet and the medium outlet of the heat exchanger of the water tank are respectively connected with the heat collector, so that the circulation of heat exchange medium is realized.

The structure, function and effect of the water tank provided in this embodiment are the same as those of the foregoing embodiments, and specific reference may be made to the foregoing embodiments, so that details are not repeated here.

In summary, the solar water heater according to the embodiment of the utility model includes the water tank and the heat collector, the water tank includes the inner container 100, the heat exchanger 200 and the electronic thermostatic valve 300, the inner container 100 has the water storage cavity 101, the inner container 100 is connected with the water inlet pipe 110 and the water outlet pipe 120 which are communicated with the water storage cavity 101, the heat exchanger 200 is covered on the outer side of the inner container 100, the bottom end of the heat exchanger 200 is provided with the medium discharge port, the medium discharge port is connected with the medium discharge pipe 210, the plug 211 is installed in the medium discharge pipe 210, the plug 211 is detachably installed on the medium discharge pipe 210 to plug or open the medium discharge pipe 210, thereby facilitating the discharge of the heat exchange medium in the heat exchanger 200 from the medium discharge pipe 210 without disassembling the whole water tank for replacement, and the replacement of the heat exchange medium is simple and convenient, and the efficiency is high. The heat exchanger 200 is further provided with a medium inlet 220 and a medium outlet 230, the medium inlet 220 and the medium outlet 230 are positioned above the medium discharge port, and the medium inlet 220 and the medium outlet 230 are respectively connected with the heat collector, so that the recycling of heat exchange medium is realized.

The electronic thermostat valve 300 has a first inlet 301, a second inlet 302 and a water outlet 303, the first inlet 301 being in communication with the water outlet pipe 120 to provide hot water for the electronic thermostat valve 300 to regulate the water temperature; the second inlet 302 is used for communicating with a cold water pipe to provide cold water for the electronic thermostat valve 300 to regulate the water temperature; the water outlet 303 is used for connecting water using equipment so as to discharge water with the water temperature adjusted to the water using equipment; the electronic thermostatic valve 300 is configured to adjust the opening degrees of the first inlet 301 and the second inlet 302 according to the water temperature of the first inlet 301, so as to adjust the proportion of hot water of the first inlet 301 and cold water of the second inlet 302, ensure the stability of the water outlet temperature of the solar water heater within a set temperature range, avoid the scalding problem caused by using solar hot water, and avoid repeated adjustment of users, thereby being convenient and practical.

Thus far, the technical solution of the present utility model has been described in connection with the alternative embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (10)

1. A water tank, comprising:

the inner container is provided with a water storage cavity; the inner container is connected with a water inlet pipe and a water outlet pipe which are communicated with the water storage cavity;

the heat exchanger is coated on the outer side of the inner container, a medium discharge port is arranged at the bottom end of the heat exchanger, the medium discharge port is connected with a medium discharge pipe, and a plug is arranged in the medium discharge pipe; the heat exchanger is also provided with a medium inlet and a medium outlet, the medium inlet and the medium outlet are both positioned above the medium discharge port, and the medium inlet and the medium outlet are used for being connected with the heat collector;

the electronic thermostatic valve is provided with a first inlet, a second inlet and a water outlet, the first inlet is communicated with the water outlet pipe, the second inlet is communicated with the cold water pipe, and the water outlet is used for being connected with water equipment; the electronic thermostat valve is configured to adjust the opening degrees of the first inlet and the second inlet according to the water temperature of the first inlet so that the water temperature of the water outlet is within a set temperature range.

2. The water tank of claim 1, wherein a sealing ring is disposed between the plug and the medium discharge pipe, and the plug is screw-coupled with the medium discharge pipe.

3. The water tank of claim 1, wherein the medium discharge pipe is mounted with a switching valve configured to open or close the medium discharge pipe;

the on-off valve is configured to open when the plug is disengaged from the media drain.

4. The water tank of claim 1, wherein the heat exchanger is a heat exchange tube wound on the outer side of the liner, and the medium discharge port is arranged at the bottom end of the heat exchange tube;

or, the heat exchanger is a medium container coated on the outer side of the inner container, a containing cavity for containing heat exchange medium is formed between the medium container and the inner container, and the medium discharge port is arranged at the bottom end of the medium container.

5. The water tank of claim 1, further comprising a connecting tube and a three-way joint, the water inlet tube comprising a first tube section and a second tube section, the first tube section being connected to the liner;

the three-way joint is respectively connected with the first pipe section, the second pipe section and the first end of the connecting pipe, the other end of the connecting pipe is connected with the second inlet, a first one-way valve is arranged on the connecting pipe and is configured to enable water flow to flow from the water inlet pipe to the second inlet in a one-way mode.

6. The water tank of claim 5, wherein a second one-way valve is provided on the first tube segment, the second one-way valve being configured to allow one-way flow of water from the first tube segment into the liner.

7. The water tank of claim 5 wherein the second tube section has a filter mounted thereon.

8. The water tank of any one of claims 1-7, further comprising an outer housing, wherein the liner, the heat exchanger, and the electronic thermostat valve are all mounted within the outer housing;

the shell is provided with a through hole, so that the water inlet pipe, the water outlet pipe and the medium discharge pipe extend to the outer side of the shell, and the plug is positioned at the outer side of the shell.

9. The water tank of claim 8, wherein a heat insulating layer is disposed between the outer housing and the heat exchanger.

10. A solar water heater, comprising: a heat collector and a water tank according to any one of claims 1-9, a medium inlet and a medium outlet of a heat exchanger of the water tank being connected to the heat collector, respectively.