CN211316542U - Phase-change water heater - Google Patents

Abstract

The utility model discloses a phase transition water heater, phase transition water heater includes: a housing defining a chamber; the inner container is arranged in the cavity and filled with a phase-change material; the heat exchanger is buried in the phase change material; and the waterway control system is respectively connected with the water inlet and the water outlet of the heat exchanger, and the circulating heating mode and the water discharging mode are switched by the waterway control system. According to the utility model discloses phase change water heater utilizes phase change material heat storage capacity, need not to heat repeatedly, just can realize going out hot water fast, has saved the energy consumption, has avoided inner bag dirt and the pollution problem brought by long-term heating again.

Description

Phase-change water heater

Technical Field

The utility model relates to a water heater field, more specifically relates to a phase change water heater.

Background

The water heater among the correlation technique, the inner bag volume is big, and the water storage is big, can satisfy many people demand for water simultaneously, but because the inner bag water storage is big, it is also longer to heat cold water to predetermined temperature time, can't satisfy the demand of rapid water use, if need the inner bag temperature keep relatively stable, need heat the water of inner bag repeatedly again, and the energy consumption is high, wastes the electricity, and the long-term water to the inner bag heats repeatedly moreover, forms the incrustation scale easily.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem to a certain extent at least.

Therefore, an object of the present invention is to provide a phase change water heater, which has low energy consumption and can provide healthy water for users.

According to the utility model discloses phase transition water heater includes drainage mode and circulation heating mode at least, phase transition water heater includes: the front surface of the shell is covered with a panel component, and the panel component is locked on the shell; the inner container is arranged in the cavity and filled with a phase-change material; the heat exchanger is buried in the phase change material; and the waterway control system is respectively connected with the water inlet and the water outlet of the heat exchanger, and the circulating heating mode and the water discharging mode are switched by the waterway control system.

According to the utility model discloses phase change water heater utilizes phase change material heat storage capacity, need not to heat repeatedly, just can realize going out hot water fast, has saved the energy consumption, has avoided inner bag dirt and the pollution problem brought by long-term heating again.

In addition, according to the utility model discloses phase change water heater can also have following additional technical characterstic:

according to some embodiments of the invention, the panel assembly comprises: the glass plate is glued on the connecting plate.

According to some embodiments of the utility model, the casing includes interconnect's preceding shell and backshell and passes through preceding shell with the backshell constructs out the cavity, the preceding glass board and the connecting plate that are equipped with of preceding shell, the glass board set up in on the connecting plate, the connecting plate with set up clearance structure between the preceding shell.

In an alternative embodiment, the gap formation comprises one or more rearwardly projecting convex hulls formed on the web.

According to some embodiments of the utility model, the front surface of casing is equipped with the glass board, the casing or be equipped with on the inner bag and be used for resisting the phase change material orientation the expanded reinforced structure of glass board direction.

In an alternative embodiment, the reinforcing structure is arranged on the outer wall of the inner container, and at least one part of the reinforcing structure is arranged on the same side as the glass plate.

According to some embodiments of the utility model, at least one lateral wall of casing is equipped with the port, the phase change water heater still includes the end plate, end plate detachably locates be used for sealing on the lateral wall the port.

In an alternative embodiment, the end plate is connected with the side wall of the shell in a plugging manner.

According to some embodiments of the present invention, the waterway control system comprises: the outlet of the water inlet pipe is respectively connected with the water inlet and the water outlet of the heat exchanger, a one-way valve and a thermostatic valve are arranged between the water inlet pipe and the water outlet of the heat exchanger in parallel, and a heater is arranged between the water inlet pipe and the water inlet of the heat exchanger; the water outlet pipe is connected with the thermostatic valve; and the water pump is arranged between the water inlet of the heat exchanger and the water outlet of the heat exchanger, and under the condition of a circulating heating mode, the water inlet and the water outlet of the heat exchanger are communicated through a pipeline where the one-way valve is located.

In an optional embodiment, the casing further comprises a partition board, the partition board divides the chamber into a first installation cavity and a second installation cavity which are mutually independent and mutually closed, one of the waterway control system and the liner is arranged in the first installation cavity, and the other one of the waterway control system and the liner is arranged in the second installation cavity.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an angled perspective view of a phase change water heater according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a perspective view of another angle of a phase change water heater according to some embodiments of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an exploded view of a phase change water heater;

fig. 6 is a perspective view of another angle of a phase change water heater according to some embodiments of the present invention;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;

fig. 8 is a schematic diagram of a connection of a waterway control system according to some embodiments of the present invention, wherein arrows indicate water flow direction in a water discharge mode;

fig. 9 is a schematic diagram of the connections of a waterway control system according to some embodiments of the present invention, wherein the arrows represent the direction of water flow in a circulation heating mode;

fig. 10 is a schematic diagram of a partial configuration of a waterway control system according to some embodiments of the present invention.

Reference numerals:

a phase change water heater 100;

a housing 10; a chamber 11; a panel assembly 12; a glass plate 121; a connecting plate 122; a front case 13; a port 131; a first connecting member 132; a front main board 133; a front side plate 134; a rear case 14; a second connector 141; a rear main board 142; a rear side plate 143; a gap structure 15; a reinforcing structure 16; an end plate 17; a partition 18;

an inner container 20;

a waterway control system 40; a water inlet pipe 41; a water outlet pipe 42; a check valve 43; a thermostatic valve 44; a heater 45; a water pump 46; a heat exchanger 47; a water inlet 471; a water outlet 472.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The inventor goes through intensive research and diligent attempts to break through the disadvantages of large volume and single appearance of the existing electric water heater. After years of arduous efforts, a brand-new phase-change water heater 100 is designed, and the phase-change water heater 100 fully utilizes the properties of phase-change materials in high-temperature heat storage and energy storage and low-temperature heat release, so that the requirement that a user wants to use water quickly is met.

Referring now to fig. 1-10, a phase change water heater 100 according to an embodiment of the present invention is described, the phase change water heater 100 including: the water path control system comprises a shell 10, an inner container 20, a heat exchanger 47 and a water path control system 40. The phase-change water heater 100 at least comprises a water discharging mode and a circulation heating mode

Specifically, as shown in fig. 1-2, the housing 10 defines a chamber 11, and the inner bladder 20 is disposed within the chamber 11. That is, the housing 10 provides an installation space, and the inner container 20 is installed in the chamber 11.

The inner container 20 is filled with a phase change material. The phase change material has heat absorption and heat release functions. The heat exchanger 47 is embedded in the phase change material. When there is a temperature difference between the phase change material and the water of the heat exchanger 47, the phase change material exchanges heat with the heat exchanger 47. That is, when the temperature of the water in the heat exchanger 47 is lower than that of the phase change material, the heat of the phase change material is released to the water in the heat exchanger 47, and the temperature of the water in the heat exchanger 47 rises rapidly; in case the temperature of the water in the heat exchanger 47 is higher than the phase change material, the phase change material will absorb the heat of the water in the heat exchanger 47, so that the temperature of the phase change material will rise continuously.

The front surface of the housing 10 is covered with a panel assembly 12, and the panel assembly 12 is locked to the housing 10. Namely, the front surface of the housing 10 is modified by the panel assembly, wherein the panel assembly 12 has the same area as the front surface of the housing 10, so that the housing 10 can be shielded by the panel assembly 12, thereby preventing the housing 10 from being contaminated and facilitating cleaning.

The waterway control system 40 is respectively connected with the water inlet 471 and the water outlet 472 of the heat exchanger 47. And the circulation heating mode and the water discharging mode are switched by the waterway control system 40. In the case of the water discharging mode, the heat exchanger 47 supplies hot water to the outside, the water path control system 40 supplements water to the water inlet 471 of the heat exchanger 47, and in the process, the heat of the phase change material is continuously transferred to the water in the heat exchanger 47, so that the continuous external delivery of hot water is realized; in the case of the circulation heating mode, the heat exchanger 47 does not deliver hot water to the outside, and the water flows circularly between the waterway control system 40 and the heat exchanger 47 after being heated by the waterway control system 40, and in the process, the phase-change material continuously absorbs the heat of the water in the heat exchanger 47 until the temperature of the phase-change material reaches the preset temperature.

That is, the water discharge capacity (i.e., the maximum water discharge amount) of the phase-change water heater 100 is positively correlated with the heat storage capacity of the phase-change material. The phase-change water heater 100 pre-stores heat in the phase-change material, and the phase-change material can rapidly release the heat to water in the heat exchanger 47 under the condition that hot water needs to be used, so that the purpose of rapidly discharging the hot water is achieved.

In addition, because the water in the heat exchanger 47 is continuously updated and replaced in the water discharging process of the phase change water heater 100, compared with the traditional water heater, the problem of using residual water does not exist, the problem of generating bacteria in the heat exchanger 47 is avoided, and healthy water can be provided for users.

Compare in traditional water heater, according to the utility model discloses phase change water heater 100 utilizes phase change material heat storage capacity, need not to heat repeatedly, just can realize going out hot water fast, has saved the energy consumption, has avoided inner bag 20 again by dirt and the pollution problem that long-term heating brought.

In some embodiments of the present invention, referring to fig. 3-5, the front surface of the casing 10 is provided with the panel assembly 12, that is, the panel assembly 12 is disposed in front of the casing 10 for covering the configuration of the surface of the casing 10, that is, the internal structure of the phase-change water heater 100 cannot be seen through the decoration of the panel assembly 12, so that the whole body is simple and elegant.

Wherein, panel assembly 12 sets up in the preceding of casing 10, and panel assembly 12 includes: a connecting plate 122 and a glass plate 121, the glass plate 121 being glued to the connecting plate 122. By providing a panel assembly 12 at the front of the housing 10, the panel assembly 12 may, on the one hand, reinforce the structural strength of the housing assembly and, on the other hand, may also mask the configuration of the surface of the housing 10. According to the utility model discloses phase change water heater 100 through set up a panel assembly 12 in the front of casing 10, and it is complicated to have solved phase change water heater 100's shell subassembly structure, the loaded down with trivial details problem of assembly process.

Furthermore, the volume of the phase change material expands with the increase of the temperature, and the volume of the inner container 20 changes with the decrease of the temperature, particularly, in the case that the glass plate 121 is provided on the housing 10, the glass plate 121 is easily broken by the pressing.

The inventor has noted the above problems in the design process, and has made an innovative improvement to the structure of the shell 10 of the phase-change water heater 100 in order to avoid the deformation of the inner container 20 pressing against the glass plate 121.

Specifically, as shown in fig. 6 and 7, the housing 10 includes a front case 13 and a rear case 14 connected to each other, a glass plate 121 and a connecting plate 122 are disposed at the front of the front case 13, the glass plate 121 is disposed on the connecting plate 122, the connecting plate 122 is connected to the front case 13, and a gap structure 15 is disposed between the rear surface of the connecting plate 122 and the front surface of the front case 13. The gap structure 15 may allow a partial gap, i.e., at least a portion of the gap may be separated, between the front housing 13 and the connecting plate 122.

In other words, the rear surface of the connecting plate 122 is not in contact with at least a portion of the front surface of the front housing 13, so that the force of the expansion of the inner container 20 acting on the front housing 13 is not completely transmitted to the connecting plate 122, thereby reducing the influence of the expansion of the inner container 20 on the glass plate 121 to a certain extent and preventing the glass plate 121 from being deformed by the expansion force.

Here, the forming position of the gap structure 15 is not particularly limited, and the gap structure 15 may be formed on the connecting plate 122, or the gap structure 15 may be formed on the front case 13, or the gap structure 15 may be formed on both the connecting plate 122 and the front case 13. Therefore, according to the utility model discloses casing 10 subassembly is through clearance structure 15 between the rear surface with connecting plate 122 and the front surface of preceding shell 13 to reduce the influence of inner bag 20 bulging force to glass board 121, guaranteed glass board 121's planarization, prevent its deformation.

That is, the rear surface of the connection plate 122 is separated from the front surface of the front case 13 by a convex hull, wherein the larger the protruding height of the convex hull with respect to the rear surface of the connection plate 122, the larger the gap between the connection plate 122 and the front case 13.

Further alternatively, the convex hull is concavely formed from the front side to the rear side of the connecting plate 122. I.e., the convex hull is stretched from front to back and the front surface of web 122 forms a dimple relative to the location of the convex hull. Wherein, a screw hole can be formed on the convex hull, and under the condition that the front shell 13 and the connecting plate 122 are locked by a screw, the screw can be hidden in the concave pit, thereby avoiding the extrusion of the glass plate 121 caused by the screw.

In other embodiments of the present invention, as shown in fig. 1 with fig. 2 and fig. 5, the glass plate 121 is disposed on the front surface of the casing 10, the inner container 20 is disposed in the casing 10, the phase-change material is filled in the inner container 20, the heat exchanger 47 is buried in the phase-change material, and the casing 10 or the inner container 20 is provided with the reinforcing structure 16 for resisting the phase-change material to move toward the glass plate 121.

Where reinforcing structure 16 is disposed on shell 10 and/or bladder 20, for example, reinforcing structure 16 may be attached to shell 10, reinforcing structure 16 may be attached to bladder 20, and reinforcing structure 16 may be attached to shell 10 and bladder 20, respectively.

It can be understood that, because the glass plate 121 is disposed on the front surface of the housing 10 of the present application, the glass plate 121 is brittle and is easily damaged, that is, the deformation of the phase change material of the glass plate 121 is greatly influenced.

In order to reduce the influence of the phase change material on the glass plate 121, the reinforcing structure 16 is provided for resisting the force of the phase change material towards the glass plate 121, so that the pressure applied to the glass plate 121 is reduced, the influence of the phase change material on the glass plate 121 can be reduced, and the glass plate 121 is prevented from deforming.

The reinforcing structure 16 is provided on the outer wall of the inner container 20 and at least a portion of the reinforcing structure 16 is on the same side as the glass panel 121. At least a portion of the reinforcing structure 16 is located on the same side as the glass plate 121, in other words, at least a portion of the reinforcing structure 16 is located on a side wall of the inner container 20 close to the glass plate 121, and a portion of the reinforcing structure 16 may be located on the same side as the glass plate 121, or the entire reinforcing structure 16 may be located on the same side as the glass plate 121. The reinforcing structure 16 is disposed on the outer wall of the inner container 20, and plays a role of fastening the inner container 20, resisting the expansion force of the phase change material toward the glass plate 121, and protecting the glass plate 121.

Of course, the above embodiments are merely illustrative and should not be construed as limiting the scope of the present invention, for example, the reinforcing structure 16 may be disposed on the inner wall of the liner 20 and the reinforcing structure 16 may be disposed on the housing 10. In other words, the location of the reinforcing structure 16 in the present application is not exclusive, as long as the reinforcing structure 16 is capable of acting against the expansion force of the phase change material toward the glass sheet 121.

In other embodiments of the present invention, specifically, as shown in fig. 1-3 and 5, the housing 10 defines a chamber 11, at least one side wall of the housing 10 being provided with a port. The port is communicated with the cavity 11, the instant heating assembly, the energy storage box, the electric control board, the water pump 46 and other devices are arranged in the cavity 11, and maintenance personnel can overhaul the devices through the port. Among them, the end plate 17 may be formed at one side wall (left side wall or right side wall) of the case 10, or the end plate 17 may be formed at both side walls (left side wall and right side wall) of the case 10.

An end plate 17 is removably provided on the side wall for closing the port. That is, the end plate 17 is detachably engaged with the housing 10, so that the end plate 17 can be detached from the housing 10 in case of maintenance; under normal use conditions, the end plate 17 can be mounted on the housing 10 to close the chamber 11, and the tightness of the chamber 11 can be ensured.

Therefore, according to the utility model discloses phase transition water heater 100, through set up the port and seal the port through end plate 17 detachably at least one lateral wall at casing 10 to conveniently overhaul the device in the cavity 11, can guarantee the leakproofness in the casing 10 again.

In an alternative embodiment, the end plate 17 is connected to the side wall of the housing 10 by means of a plug connection. That is, one of the end plate 17 and the housing 10 is provided with a buckle, and the other is provided with a slot, so that the end plate 17 and the housing 10 are connected by the cooperation of the buckle and the slot. The end plate 17 is matched with the shell 10 in an inserting mode, so that the assembly and disassembly are convenient, the processing technology is simple, and the realization is easy.

Because the end plate 17 is small and light relative to the housing 10, the end plate 17 can be easily inserted into the housing 10 by providing a snap on the end plate 17.

In other embodiments of the present invention, the housing 10 includes: a panel assembly 12, a front case 13, and a rear case 14 opened forward.

As shown in fig. 2 and 6, the panel assembly 12, the front shell 13 and the rear shell 14 are sequentially connected, the front shell 13 is successively opened, the rear shell 14 is opened forward, the front shell 13 and the rear shell 14 form a cavity 11, a first connecting piece 132 is arranged in the front shell 13, a second connecting piece 141 matched with the first connecting piece 132 is arranged in the rear shell 14, and the panel assembly 12 is arranged on the front surface of the front shell 13.

In other words, the first connector 132 is provided in the cavity formed by the front case 13, the second connector 141 is provided in the cavity formed by the rear case 14, and the front case 13 and the rear case 14 are connected by the first connector 132 and the second connector 141. That is, the first connecting element 132 and the second connecting element 141 are both disposed in the cavity 11 and are not exposed outside the casing 10, so as to improve the overall simplicity of the appearance of the casing 10.

In some embodiments, as shown in fig. 5, the front shell 13 includes: the front main plate 133 and the front side plate 134 formed at the periphery of the front main plate 133 and extending backward, the first connecting member 132 is a tube column, and the first connecting member 132 is formed on the front side plate 134 and extends in the front-back direction. As shown in fig. 6, the rear case 14 includes: the rear main plate 142 and a rear side plate 143 formed at a periphery of the rear main plate 142 and extending forward, the second connecting member 141 is a pipe column, and the second connecting member 141 is formed on the rear side plate 143 and extends in the front-rear direction.

The front plate 134 and the rear plate 143 may be connected in a butt joint manner, at least a part of the front plate 134 may be covered on the outer peripheral surface of the rear plate 143, or at least a part of the rear plate 143 may be covered on the outer peripheral surface of the front plate 134. The first connecting member 132 is connected to the front main plate 133 and extends in the front-rear direction, the second connecting member 141 is connected to the rear case 14 and extends in the front-rear direction, the first connecting member 132 is adapted to be coupled to the second connecting member 141, in other words, the front main plate 133 and the rear case 14 are connected by the first connecting member 132 and the second connecting member 141, and both the first connecting member 132 and the second connecting member 141 are configured as a pipe column, whereby the structural strength of the first connecting member 132 and the second connecting member 141, that is, the connection strength between the front main plate 133 and the rear case 14, can be improved.

In some alternative embodiments, as shown in fig. 5, a first screw hole is provided on the first connecting element 132, a second screw hole is provided on the second connecting element 141, and the first connecting element 132 and the second connecting element 141 are locked by screws. Specifically, a first screw hole extends in the axial direction of the first connector 132 and penetrates the first connector 132 and the front main plate 133, and a second screw hole extends in the axial direction of the second connector 141, whereby a screw passes through the front main plate 133, the first connector 132, and the second connector 141 in order to connect the first connector 132 and the second connector 141. And because panel component 12 locates the front surface of preceding shell 13, can effectively avoid the screw to be because of exposing in the air and being corroded the condition emergence of inefficacy, thereby improved the life of screw and guaranteed the connection stability of shell subassembly, also can conveniently maintain.

In other embodiments of the present invention, the phase change water heater 100 at least comprises a water discharging mode and a circulation heating mode, in the case of the water discharging mode, the cold water in the water inlet pipe 41 and the hot water flowing out from the heat exchanger 47 flow into the thermostatic valve 44 together to be mixed, and the cold water in the water inlet pipe 41 is also synchronously conveyed into the heat exchanger 47 to supplement the water amount, wherein the heater 45 may or may not preheat the cold water before the cold water enters the heat exchanger 47; in the case of the circulation heating mode, the water inlet pipe 41 and the water outlet pipe 42 are both closed, and water flows circularly between the heat exchanger 47 and the heater 45 under the pumping pressure of the water pump 46, cold water enters the heat exchanger 47, and the heater 45 must preheat the cold water to ensure that the phase change material can store heat sufficiently. The heating pipe can be a heat pipe, and the power of the heat pipe can be set to be adjustable, so that the heat pipe can be heated by adopting different heating powers in different working modes.

However under the limited prerequisite of phase transition water heater 100 spatial structure, for make waterway control system 40's pipeline and structure easy to assemble simultaneously, can guarantee superior performance again, be not the easy affairs condition of piece in the product development process, the utility model discloses the waterway control system 40 pipeline of solution phase transition water heater 100 is complicated, assembly operation difficulty, the problem of stable performance.

Referring now to fig. 7-9, a waterway control system 40 of a phase change water heater 100 according to an embodiment of the present invention is described, including: heat exchanger 47, inlet pipe 41 and outlet pipe 42.

Specifically, the heat exchanger 47 includes a water inlet 471 and a water outlet 472. The heat exchanger 47 is embedded in the phase change material of the phase change water heater 100, and when there is a temperature difference between the phase change material and the water of the heat exchanger 47, the phase change material exchanges heat with the heat exchanger 47. That is, in the case that the temperature of the water in the heat exchanger 47 is lower than that of the phase change material, the heat of the phase change material is released to the water in the heat exchanger 47; in the case where the temperature of the water in the heat exchanger 47 is higher than the phase change material, the phase change material will absorb heat from the water in the heat exchanger 47.

As shown in fig. 7 and fig. 8, the outlet of the water inlet pipe 41 is connected to the water inlet 471 and the water outlet 472 of the heat exchanger 47, respectively. It should be noted that, in the present application, "connected" should be understood in a broad sense, and may represent a direct connection or an indirect connection, where, due to the one-way valve 43 and the thermostatic valve 44 being arranged in parallel between the water inlet pipe 41 and the water outlet 472 of the heat exchanger 47, the water inlet pipe 41 and the water outlet 472 of the heat exchanger 47 are indirectly connected. Since the heater 45 is disposed between the water inlet 471 of the water inlet pipe 41 and the heat exchanger 47, the water inlet 471 of the water inlet pipe 41 and the heat exchanger 47 are also indirectly connected.

In the waterway control system 40, when the phase-change water heater 100 is in the water discharge mode, the water in the water inlet pipe 41 can be simultaneously led to the thermostatic valve 44 and the heat exchanger 47, so that the water is discharged from the water outlet pipe 42, the water is introduced into the water inlet pipe 41, and the phase-change water heater 100 can continuously discharge the water.

The water pump 46 is disposed between the water inlet 471 of the heat exchanger 47 and the water outlet 472 of the heat exchanger 47. In the case of the circulation heating mode, the water pump 46 drives the water flow between the inside and outside of the heat exchanger 47. It will be appreciated that in the case of the discharge mode, the water pump 46 may not be activated, and that the water pump 46 may only act as a water flow channel. Thus, the energy consumption of the phase-change water heater 100 may be reduced and the service life of the water pump 46 may be extended.

As shown in fig. 9, in the case of the circulation heating mode, the water inlet 471 and the water outlet 472 of the heat exchanger 47 are communicated through the pipeline in which the check valve 43 is located. In other words, in the heat release mode, the check valve 43 is hydraulically opened from the water inlet 471 and the water outlet 472 of the heat exchanger 47, so that cold water is prevented from reversely entering the heat exchanger 47 from the path of the check valve 43, and the normal flow of the waterway control system 40 is ensured.

In short, according to the embodiment of the present invention, in the water path control system 40 of the phase change water heater 100, the outlet of the water inlet pipe 41 is connected to the water inlet 471 and the water outlet 472 of the heat exchanger 47, and the check valve 43 and the thermostatic valve 44 are arranged between the water inlet pipe 41 and the water outlet 472 of the heat exchanger 47 in parallel, so that the pipeline layout of the water path control system 40 is simplified, and the circulation heating mode and the water discharging mode of the water path control system 40 are switched conveniently.

In an alternative embodiment, the water pump 46 is disposed between the water inlet 471 of the heat exchanger 47 and the outlet of the water inlet pipe 41. That is, the water pump 46 is disposed near the water inlet pipe 41, so that the water pump 46 can be filled with cold water in an inactive state (neither the circulation heating mode nor the water discharging mode) of the phase-change water heater 100, and thus, the water pump 46 can be prevented from being soaked with hot water for a long time, and the service life of the water pump 46 can be prolonged.

In other embodiments of the present invention, a heat insulating layer is disposed between the outer wall of the inner container 20 and the inner wall of the casing 10. The insulating layer can prevent heat of the inner container 20 from radiating to the outside, improve the heat insulating property of the phase-change water heater 100, and reduce energy consumption. Wherein, the heat-insulating layer can be made of foam material.

In an optional embodiment, the phase change water heater further includes a partition plate 18, the partition plate 18 divides the chamber 11 into a first installation cavity and a second installation cavity which are independent from each other and are closed to each other, one of the waterway control system 40 and the liner 20 is disposed in the first installation cavity, and the other is disposed in the second installation cavity. Therefore, the heat insulation material can be prevented from entering the waterway system 40, and the circuit safety is ensured.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. A phase change water heater including at least a water discharge mode and a cyclic heating mode, comprising:

the front surface of the shell is covered with a panel component, and the panel component is locked on the shell;

the inner container is arranged in the cavity and filled with a phase-change material;

the heat exchanger is buried in the phase change material;

and the waterway control system is respectively connected with the water inlet and the water outlet of the heat exchanger, and the circulating heating mode and the water discharging mode are switched by the waterway control system.

2. A phase change water heater as claimed in claim 1 wherein the panel assembly comprises: the glass plate is glued on the connecting plate.

3. A phase change water heater according to claim 1 wherein the shell comprises a front shell and a rear shell connected to each other and defining a chamber through the front shell and the rear shell, a glass plate and a connecting plate are provided in front of the front shell, the glass plate is provided on the connecting plate, and a gap structure is provided between the connecting plate and the front shell.

4. The phase change water heater according to claim 3, wherein the gap structure includes one or more rearwardly projecting convex hulls formed on the connecting plate.

5. A phase change water heater according to claim 1, wherein a glass plate is provided on a front surface of the case, and a reinforcing structure for resisting expansion of the phase change material toward the glass plate is provided on the case or the inner tank.

6. The phase change water heater according to claim 5, wherein the reinforcing structure is provided on the outer wall of the inner container and at least a portion of the reinforcing structure is on the same side as the glass plate.

7. A phase change water heater according to claim 1 wherein at least one side wall of the housing is provided with a port, the phase change water heater further comprising an end plate removably provided on the side wall for closing the port.

8. The phase change water heater according to claim 7, wherein the end plate is connected to the side wall of the housing by a plug-in connection.

9. A phase change water heater as claimed in claim 1, wherein the waterway control system comprises:

the outlet of the water inlet pipe is respectively connected with the water inlet and the water outlet of the heat exchanger, a one-way valve and a thermostatic valve are arranged between the water inlet pipe and the water outlet of the heat exchanger in parallel, and a heater is arranged between the water inlet pipe and the water inlet of the heat exchanger;

the water outlet pipe is connected with the thermostatic valve;

and the water pump is arranged between the water inlet of the heat exchanger and the water outlet of the heat exchanger, and under the condition of a circulating heating mode, the water inlet and the water outlet of the heat exchanger are communicated through a pipeline where the one-way valve is located.

10. The phase change water heater according to claim 1, wherein the housing further includes a partition dividing the chamber into a first installation cavity and a second installation cavity that are independent of each other and are closed to each other, one of the waterway control system and the liner being disposed in the first installation cavity and the other being disposed in the second installation cavity.

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