CN216049352U - Phase change energy storage device and water heating equipment - Google Patents

Abstract

The utility model relates to a phase change energy storage device and hot water equipment, the phase change energy storage device comprises: inner shell, shell body, insulation material, heat exchange assembly and phase change material. The inner shell is sleeved inside the outer shell, and the heat-insulating material is filled in the area between the inner shell and the outer shell. Two ends of the heat exchange tube are respectively connected with the water inlet connecting tube and the water outlet connecting tube, and the heat exchange tube is arranged inside the inner shell. The water inlet connecting pipe and the water outlet connecting pipe sequentially penetrate through the inner shell and the outer shell and extend out of the outer shell. The phase change material is filled in the inner shell and positioned outside the heat exchange tube. Because the outside of interior casing is provided with the shell body to and be located regional insulation material between interior casing and the shell body, insulation material wraps up in the outside of interior casing, plays better heat preservation effect, thereby can the significantly reduced heat of interior casing to loss of transmission in the environment, can improve phase change energy memory's heat accumulation ability effectively, and then can prolong when keeping warm.

Description

Phase change energy storage device and water heating equipment

Technical Field

The utility model relates to the technical field of water heaters, in particular to a phase change energy storage device and hot water equipment.

Background

Conventionally, the hot water apparatus includes a gas water heater, an electric water heater, or a solar water heater, etc. The gas water heater has many user groups due to the characteristics of instant heating, high thermal efficiency, fast heating speed and the like, and the following description takes a water heating device as a gas water heater as an example. Generally, the gas water heater is installed in a balcony or a kitchen, and after the gas water heater is turned off and then turned on, bath water is suddenly cooled and suddenly heated due to the processes of cleaning a fan of the gas water heater and reigniting a burner, so that the water temperature fluctuation is large, and uncomfortable bath experience is brought to a user. Some hot water equipment is provided with the heat accumulation structure on its outlet pipeline and overcomes the shower water and suddenly cool suddenly hot and the big defect of temperature fluctuation, and traditional heat accumulation structure's heat accumulation ability is relatively poor, can't guarantee the hot water constant temperature effect of longer time.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a phase change energy storage device, which can effectively improve the heat storage capacity and reduce the water temperature fluctuation.

A second technical problem to be solved by the present invention is to provide a water heating apparatus, which can effectively improve the heat storage capacity and reduce the fluctuation of the water temperature.

The first technical problem is solved by the following technical scheme:

a phase change energy storage device, said phase change energy storage device comprising: the heat insulation structure comprises an inner shell, an outer shell and a heat insulation material, wherein the inner shell is sleeved inside the outer shell, and the heat insulation material is filled in an area between the inner shell and the outer shell; the heat exchange assembly comprises a heat exchange tube, a water inlet connecting tube and a water outlet connecting tube, two ends of the heat exchange tube are respectively connected with the water inlet connecting tube and the water outlet connecting tube, the heat exchange tube is arranged inside the inner shell, and the water inlet connecting tube and the water outlet connecting tube sequentially penetrate through the inner shell and the outer shell and extend out of the outer shell; and the phase change material is filled in the inner shell and positioned outside the heat exchange tube.

Compared with the background technology, the phase change energy storage device has the following beneficial effects: during specific work, for example, the heat exchange tube is connected to a hot water outlet pipe of hot water equipment in series, hot water of the hot water outlet pipe enters the heat exchange tube through the water inlet connecting pipe and is discharged outwards through the water outlet connecting pipe, and the heat exchange tube exchanges heat with the phase-change material to store heat in the phase-change material. In the starting process of the hot water equipment, cold water of the hot water outlet pipe enters the heat exchange pipe through the water inlet connecting pipe, heat of the phase change material is released outwards and transmitted to the heat exchange pipe, and the heat exchange pipe heats and raises the temperature of the cold water to a preset temperature, so that water temperature fluctuation can be reduced. In addition, because the outside of interior casing is provided with the shell body to and be located regional insulation material between interior casing and the shell body, insulation material wraps up in the outside of interior casing, plays better heat preservation effect, thereby can the significantly reduced heat of interior casing to loss of transmission in the environment, can improve phase change energy memory's heat accumulation ability effectively, and then can prolong when keeping warm.

In one embodiment, the inner housing is provided with a first injection port, and a first blocking piece detachably arranged at the first injection port. So, when opening first shutoff piece, alright in order to pour into the phase change material of liquid state into in the interior casing according to the demand.

In one embodiment, the inner shell is provided with a connecting pipe, the opening wall of the first injection port is connected with one end of the connecting pipe, the outer shell is provided with a first avoidance hole corresponding to the position of the connecting pipe, the connecting pipe is arranged in the first avoidance hole, the first blocking piece is detachably arranged at the other end of the connecting pipe, and the first blocking piece is positioned outside the outer shell. Therefore, in the assembly production stage of the phase change energy storage device, the phase change material can be injected into the inner shell through the first injection port, and then the first injection port is blocked by the first blocking piece to avoid leakage; in addition, when the phase change energy storage device is in a use stage, if phase change material needs to be added into the inner shell, the phase change material can also be injected into the inner shell through the first injection port after the first blocking piece is removed.

In one embodiment, the first blocking piece is a first bolt, and the inner wall of the other end of the connecting pipe is provided with threads corresponding to the first bolt; the first bolt overcoat is equipped with first sealed pad, first sealed pad contradict in the head of first bolt with between the connecting pipe other end terminal surface. So, when rotating first bolt, just can the first shutoff piece of dismouting, it is comparatively convenient to operate. In addition, the first sealing gasket can ensure the sealing performance between the first bolt and the connecting pipe, and the phase-change material is prevented from leaking outwards through the connecting pipe.

In one embodiment, the thermal insulation material is a foam material; the heat insulation material is filled in the area between the inner shell and the outer shell; the heat insulation material is wrapped outside the inner shell. Therefore, in the production and manufacturing process, after the inner shell is arranged in the outer shell, the foaming agent is filled in the area between the inner shell and the outer shell, the foaming agent is cyclopentane, polyurethane and the like, the foaming agent is solidified to form a foaming material after being injected for a period of time, and the foaming material plays a role in heat preservation and can also enhance the combination stability between the inner shell and the outer shell. In addition, when the heat preservation material wraps the outer part of the inner shell, the heat preservation effect on the inner shell is better.

In one embodiment, the outer housing is provided with a second injection port, and a second blocking piece detachably arranged at the second injection port. Therefore, in the assembling and production process of the phase change energy storage device, the second plugging piece is opened, the foaming agent is injected into the area between the inner shell and the outer shell, and then the second injection port is plugged by the second plugging piece.

In one embodiment, the inner shell comprises a first cylinder and a first cover, one end of the first cylinder is provided with a first opening, the other end of the first cylinder is a closed end, and the first cover is detachably arranged at one end of the first cylinder, which is provided with the first opening; the shell body comprises a second cylinder body and a second cover body, a second opening is formed in one end of the second cylinder body, the other end of the second cylinder body is a closed end, and the second cover body is detachably arranged at one end, provided with the second opening, of the second cylinder body.

In one embodiment, a first guide pipe and a second guide pipe are arranged on the plate surface of the first cover body, and a second avoidance hole corresponding to the first guide pipe and a third avoidance hole corresponding to the second guide pipe are arranged on the second cover body; the first guide pipe is arranged in the second avoidance hole, and the second guide pipe is arranged in the third avoidance hole; the water inlet connecting pipe is sleeved in the first guide pipe, and the water outlet connecting pipe is sleeved in the second guide pipe. Therefore, on one hand, the water inlet connecting pipe and the water outlet connecting pipe respectively penetrate out of the outer shell through the first guide pipe and the second guide pipe; on the other hand, the water inlet connecting pipe and the water outlet connecting pipe are both led out outwards through the end face where the second cover body is located, so that the water inlet connecting pipe and the water outlet connecting pipe are conveniently connected with a pipeline of hot water equipment.

In one embodiment, the heat exchange tube is an S-shaped tube, and heat exchange fins are arranged on the outer wall of the heat exchange tube. So, the S-shaped pipe can make full use of the space of the inner shell, and the heat exchange path is prolonged as far as possible, so that the heating time of cold water in the heat exchange pipe process is prolonged, and the heat exchange effect can be ensured. In addition, the heat exchange fin can improve the heat exchange effect between the heat exchange tube and the phase change material.

The second technical problem is solved by the following technical solutions:

the water heating equipment comprises the phase change energy storage device, and the water inlet connecting pipe and the water outlet connecting pipe are arranged on a hot water outlet pipe of the water heating equipment in series.

Compared with the background technology, the water heating equipment of the utility model has the following beneficial effects: during specific work, for example, the heat exchange tube is connected to a hot water outlet pipe of hot water equipment in series, hot water of the hot water outlet pipe enters the heat exchange tube through the water inlet connecting pipe and is discharged outwards through the water outlet connecting pipe, and the heat exchange tube exchanges heat with the phase-change material to store heat in the phase-change material. In the starting process of the hot water equipment, cold water of the hot water outlet pipe enters the heat exchange pipe through the water inlet connecting pipe, heat of the phase change material is released outwards and transmitted to the heat exchange pipe, and the heat exchange pipe heats and raises the temperature of the cold water to a preset temperature, so that water temperature fluctuation can be reduced. In addition, because the outside of interior casing is provided with the shell body to and be located regional insulation material between interior casing and the shell body, insulation material wraps up in the outside of interior casing, plays better heat preservation effect, thereby can the significantly reduced heat of interior casing to loss of transmission in the environment, can improve phase change energy memory's heat accumulation ability effectively, and then can prolong when keeping warm.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a phase change energy storage device according to an embodiment of the utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic axial cross-sectional view of the structure of FIG. 1;

fig. 4 is a schematic structural view of the first cover body, the second cover body, the water inlet connection pipe and the water outlet connection pipe in fig. 2;

FIG. 5 is a schematic structural view of one of the straight tube sections of FIG. 2 with heat exchange fins disposed thereon;

fig. 6 is a schematic structural diagram of a water heating apparatus according to an embodiment of the present invention.

Reference numerals:

10. a phase change energy storage device; 11. an inner housing; 111. a first injection port; 112. a first blocking member; 113. a connecting pipe; 114. a first gasket; 115. a first cylinder; 1151. a first opening; 116. a first cover body; 1161. a first guide tube; 1162. a second guide tube; 12. an outer housing; 121. a first avoidance hole; 122. a second injection port; 123. a second blocking member; 124. a second cylinder; 1241. a second opening; 125. a second cover body; 1251. a second avoidance hole; 1252. a third avoidance hole; 126. a second gasket; 13. a thermal insulation material; 14. a heat exchange assembly; 141. a heat exchange pipe; 1411. a straight pipe section; 1412. an elbow pipe; 1413. heat exchange fins; 142. a water inlet connecting pipe; 143. a water outlet connecting pipe; 144. connecting a joint; 15. a phase change material; 20. a hot water outlet pipe; 30. a host; 40. a cold water inlet pipe; 50. a water pump; 60. a first communication pipe; 70. a one-way valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a phase change energy storage device 10 according to an embodiment of the utility model, fig. 2 is an exploded structural diagram of fig. 1, and fig. 3 is an axial sectional structural diagram of fig. 1. In an embodiment of the present invention, a phase change energy storage device 10 includes: inner shell 11, outer shell 12, insulation material 13 (the position indicated by 13 in fig. 3 is insulation material 13, the solid structure is not shown in the figure), heat exchange assembly 14 and phase change material 15 (the position indicated by 15 in fig. 3 is phase change material 15, the solid structure is not shown in the figure). The inner shell 11 is sleeved inside the outer shell 12, and the heat insulating material 13 is filled in the area between the inner shell 11 and the outer shell 12. The heat exchange assembly 14 includes a heat exchange pipe 141, a water inlet connection pipe 142 and a water outlet connection pipe 143. The heat exchange tube 141 has two ends connected to the inlet connection tube 142 and the outlet connection tube 143, respectively, and the heat exchange tube 141 is disposed inside the inner housing 11. The water inlet connecting pipe 142 and the water outlet connecting pipe 143 both penetrate through the inner shell 11 and the outer shell 12 in sequence and extend out of the outer shell 12. The phase change material 15 is filled in the inside of the inner case 11 and outside the heat exchange pipe 141.

Referring to fig. 1, 3 and 6, fig. 6 is a schematic structural diagram of a hot water apparatus according to an embodiment of the present invention. When the phase change energy storage device 10 is in specific operation, for example, the phase change energy storage device is connected to a hot water outlet pipe 20 of a hot water device in series, hot water in the hot water outlet pipe 20 enters the heat exchange pipe 141 through the water inlet connecting pipe 142 and is discharged outwards through the water outlet connecting pipe 143, and the heat exchange pipe 141 exchanges heat with the phase change material 15 to store heat in the phase change material 15. For example, during the starting process of the hot water equipment, the cold water in the hot water outlet pipe 20 enters the heat exchange pipe 141 through the water inlet connecting pipe 142, the heat of the phase change material 15 is released outwards and transferred to the heat exchange pipe 141, and the heat exchange pipe 141 heats the cold water to a preset temperature, so that the fluctuation of the water temperature can be reduced. In addition, because the outside of interior casing 11 is provided with shell body 12 to and be located regional insulation material 13 between interior casing 11 and the shell body 12, insulation material 13 wraps up in the outside of interior casing 11, plays better heat preservation effect, thereby can significantly reduce the heat of interior casing 11 and to loss of transfer in the environment, can improve phase change energy memory 10's heat accumulation ability effectively, and then can prolong when keeping warm.

It should be noted that the "water inlet connection pipe 142 and the water outlet connection pipe 143" may be a part of the heat exchange pipe 141, that is, the "water inlet connection pipe 142 and the water outlet connection pipe 143" and the other parts of the heat exchange pipe 141 "are integrally formed; or an independent component which can be separated from the other part of the heat exchange tube 141, that is, the water inlet connecting tube 142 and the water outlet connecting tube 143 can be manufactured independently and then combined with the other part of the heat exchange tube 141 into a whole.

Referring to fig. 1, fig. 2 and fig. 4, fig. 4 is a schematic structural diagram illustrating the first cover 116, the second cover 125, the water inlet connecting pipe 142 and the water outlet connecting pipe 143 in fig. 2. Further, the inner housing 11 is provided with a first injection port 111, and a first blocking member 112 detachably provided to the first injection port 111. Thus, when the first blocking member 112 is opened, the phase change material 15 in a liquid state can be injected into the inner housing 11 as required.

Referring to fig. 1, 2 and 4, further, a connecting pipe 113 is disposed on the inner housing 11, and the opening wall of the first injection port 111 is connected to one end of the connecting pipe 113. The outer housing 12 is provided with a first avoiding hole 121 corresponding to the connecting pipe 113, and the connecting pipe 113 is disposed in the first avoiding hole 121. The first closing member 112 is detachably provided at the other end of the connection pipe 113, and the first closing member 112 is located outside the outer case 12. In this way, in the assembly production stage of the phase change energy storage device 10, the phase change material 15 may be injected into the inner housing 11 through the first injection port 111, and then the first injection port 111 is blocked by the first blocking piece 112 to avoid leakage; furthermore, if it is necessary to add the phase change material 15 into the inner housing 11 during the phase change energy storage device 10 is in use, the phase change material 15 may be injected into the inner housing 11 through the first injection port 111 after the first blocking member 112 is removed.

Referring to fig. 1, 2 and 4, further, the first plugging member 112 is a first bolt, and the inner wall of the other end of the connecting pipe 113 is provided with a thread corresponding to the first bolt. The first bolt is sleeved with a first sealing gasket 114, and the first sealing gasket 114 is abutted between the head of the first bolt and the end face of the other end of the connecting pipe 113. Thus, when the first bolt is rotated, the first plugging member 112 can be disassembled and assembled, and the operation is convenient. In addition, the first sealing gasket 114 can ensure the sealing performance between the first bolt and the connecting pipe 113, and prevent the phase change material 15 from leaking outwards through the connecting pipe 113.

It should be noted that, in order to ensure the sealing property between the other end of the connecting pipe 113 and the hole wall of the first avoiding hole 121, the other end of the connecting pipe 113 is connected to the hole wall of the first avoiding hole 121 by welding.

It should be noted that the first blocking piece 112 is not limited to be the first bolt, but may also be, for example, a clamping piece, an elastic plug, and the like, and is not limited herein.

Referring to fig. 1 to 4, further, the thermal insulation material 13 is a foam material. The insulation 13 fills the area between the inner shell 11 and the outer shell 12. The thermal insulation material 13 is wrapped outside the inner shell 11. In this way, in the manufacturing process, after the inner shell 11 is disposed in the outer shell 12, a foaming agent, such as cyclopentane, polyurethane, or the like, is filled into the area between the inner shell 11 and the outer shell 12, and the foaming agent is cured to form a foaming material after being injected for a period of time, so that the foaming material plays a role in heat preservation and can also enhance the bonding stability between the inner shell 11 and the outer shell 12. In addition, when the thermal insulation material 13 is wrapped outside the inner shell 11, the thermal insulation effect on the inner shell 11 is better.

Referring to fig. 1 to 4, in one embodiment, the outer housing 12 is provided with a second injection port 122, and a second blocking member 123 detachably disposed at the second injection port 122. In this way, during the assembly production process of the phase change energy storage device 10, the second blocking member 123 is opened, the foaming agent is injected into the region between the inner housing 11 and the outer housing 12, and then the second injection port 122 is blocked by the second blocking member 123.

Similarly, the second blocking member 123 is, for example, a second bolt, and the wall of the second injection port 122 is provided with a thread adapted to the second bolt, so that the disassembling and assembling operation can be facilitated. Of course, the second blocking member 123 may also be, for example, a clamping member or an elastic plug disposed at the second injection port 122, and is not limited herein and is disposed according to actual requirements. In addition, a second gasket 126 is sleeved outside the second bolt, and the second gasket 126 is abutted between the head of the second bolt and the plate surface of the outer shell 12. The second sealing gasket 126 can ensure the sealing performance and prevent the heat insulating material 13 from leaking outwards through the second injection port 122.

Referring to fig. 1 to 4, in one embodiment, the inner housing 11 includes a first cylinder 115 and a first cover 116. One end of the first cylinder 115 is provided with a first opening 1151, the other end of the first cylinder 115 is a closed end, and the first cover 116 is detachably disposed at the end of the first cylinder 115 provided with the first opening 1151. Similarly, the outer casing 12 includes a second cylinder 124 and a second cover 125, wherein one end of the second cylinder 124 is provided with a second opening 1241, the other end of the second cylinder 124 is a closed end, and the second cover 125 is detachably disposed at the end of the second cylinder 124 provided with the second opening 1241.

Specifically, the first barrel 115 and the first cover 116 are detachably connected by, for example, a screw-fit connection, a snap-fit connection, an adhesive connection, or the like, which is not limited herein and is designed according to actual requirements. In addition, the first cylinder 115 and the second cylinder 124 are, for example, cylindrical, cubic, etc., and are not limited herein.

Referring to fig. 1 to 4, a first guide pipe 1161 and a second guide pipe 1162 are disposed on the plate surface of the first cover 116, and a second avoiding hole 1251 corresponding to the first guide pipe 1161 and a third avoiding hole 1252 corresponding to the second guide pipe 1162 are disposed on the second cover 125. The first guide pipe 1161 is disposed in the second escape hole 1251, and the second guide pipe 1162 is disposed in the third escape hole 1252. The inlet connection pipe 142 is sleeved in the first guide pipe 1161, and the outlet connection pipe 143 is sleeved in the second guide pipe 1162. Thus, on one hand, the water inlet connecting pipe 142 and the water outlet connecting pipe 143 respectively pass through the first guide pipe 1161 and the second guide pipe 1162 and penetrate out of the outer shell 12; on the other hand, the inlet connection pipe 142 and the outlet connection pipe 143 are both led out through the end surface of the second cover 125, so as to be connected to the pipeline of the hot water apparatus.

Specifically, in order to ensure the sealing property of the inner housing 11, the outer wall of the first guide pipe 1161 is welded to the hole wall of the second escape hole 1251, and the outer wall of the second guide pipe 1162 is welded to the hole wall of the third escape hole 1252. In addition, a sealing ring is arranged between the outer wall of the water inlet connecting pipe 142 and the inner wall of the first guide pipe 1161, and a sealing ring is arranged between the outer wall of the water outlet connecting pipe 143 and the inner wall of the second guide pipe 1162.

Of course, as an alternative, the inlet connection pipe 142 and the outlet connection pipe 143 may be disposed on different end surfaces of the outer shell 12, and are not limited herein.

Further, in order to facilitate the water inlet connection pipe 142 and the water outlet connection pipe 143 to be arranged on the hot water outlet pipe 20 of the hot water device in series, the water inlet connection pipe 142 and the water outlet connection pipe 143 are both provided with a connection joint 144.

Referring to fig. 1 to 4, in one embodiment, the heat exchanging pipe 141 is an S-shaped pipe, and a heat exchanging fin 1413 is disposed on an outer wall of the heat exchanging pipe 141. So, the S-shaped pipe can make full use of the space of the inner shell 11, and the heat exchange path is prolonged as far as possible, so that the heating time of cold water passing through the heat exchange pipe 141 is prolonged, and the heat exchange effect can be ensured. In addition, the heat exchange fin 1413 can improve the heat exchange effect between the heat exchange tube 141 and the phase change material 15.

Referring to FIGS. 2 to 5, FIG. 5 is a schematic view showing a heat exchange fin 1413 arranged outside one of the straight tube sections 1411 in FIG. 2. Specifically, the heat exchange tube 141 includes a plurality of straight tube sections 1411, and an elbow tube 1412 connecting the plurality of straight tube sections 1411 in series. The outer wall of the straight tube section 1411 is provided with heat exchange fins 1413.

Referring to fig. 1 and fig. 6, in an embodiment of a hot water apparatus, the hot water apparatus includes the phase change energy storage device 10 according to any of the embodiments, and the water inlet connection pipe 142 and the water outlet connection pipe 143 are disposed in series on the hot water outlet pipe 20 of the hot water apparatus.

When the water heating device is operated, for example, the water heating device is connected to the water heating outlet pipe 20 of the water heating device in series, the hot water in the water heating outlet pipe 20 enters the heat exchanging pipe 141 through the water inlet connecting pipe 142 and is discharged outwards through the water outlet connecting pipe 143, and the heat exchanging pipe 141 exchanges heat with the phase change material 15 to store the heat in the phase change material 15. In the process of starting up the hot water device, the cold water in the hot water outlet pipe 20 enters the heat exchange pipe 141 through the water inlet connecting pipe 142, the heat of the phase change material 15 is released outwards and transferred to the heat exchange pipe 141, and the heat exchange pipe 141 heats the cold water to a preset temperature, so that the fluctuation of the water temperature can be reduced. In addition, because the outside of interior casing 11 is provided with shell body 12 to and be located regional insulation material 13 between interior casing 11 and the shell body 12, insulation material 13 wraps up in the outside of interior casing 11, plays better heat preservation effect, thereby can significantly reduce the heat of interior casing 11 and to loss of transfer in the environment, can improve phase change energy memory 10's heat accumulation ability effectively, and then can prolong when keeping warm.

Further, the hot water apparatus further includes a main unit 30, a cold water inlet pipe 40, and a water pump 50. The host 30 is connected with the cold water inlet pipe 40 and the hot water outlet pipe 20 respectively, and the water pump 50 is arranged on the cold water inlet pipe 40. When the water pump 50 is started, a water source can enter the host 30 through the cold water inlet pipe 40, the host 30 heats cold water entering the host 30, the heated and heated water is discharged outwards through the hot water outlet pipe 20, the water in the hot water outlet pipe 20 flows through the phase change energy storage device 10 during the water discharge process, the temperature of hot water discharged to a water outlet point by the hot water outlet pipe 20 can be within a preset range through the phase change energy storage device 10, and the water temperature fluctuation is small.

Further, the water heating apparatus further includes a first communication pipe 60 and a check valve 70 provided on the first communication pipe 60. The water outlet connection pipe 143 is connected to a three-way pipe (not shown), one outlet of the three-way pipe is connected to the hot water outlet pipe 20, the other outlet of the three-way pipe is communicated with the first end of the first communication pipe 60, the second end of the first communication pipe 60 is communicated with the cold water inlet pipe 40, and the second end of the first communication pipe 60 is located on the water inlet side of the water pump 50. The water pump 50 works, and under the action of the check valve 70, the water flow direction of the first communication pipe 60 is from the first end to the second end, and enters the cold water inlet pipe 40 to be mixed with cold water and then enters the main unit 30.

When the water heater is used specifically, after the water heater finishes the first start-up heating, the phase change energy storage device 10 finishes the heat energy storage, and under the condition of a slightly long shutdown time, the water heater is started again, the heat energy stored in the phase change energy storage device 10 heats cold water discharged outwards from the hot water outlet pipe 20, and the outlet water temperature of the hot water outlet pipe 20 at the startup time is ensured. One path of hot water in the water outlet connection pipe 143 of the phase change energy storage device 10 can be provided to the cold water inlet pipe 40, namely, under the power action of the water pump 50, the hot water enters the cold water inlet pipe 40 through the first communication pipe 60, and enters the host 30 after being mixed with the cold water, so that the water inlet temperature of the cold water inlet pipe 40 can be increased; the other path of hot water of the phase change energy storage device 10 can be directly provided for a water consumption point, so that the waiting time is reduced.

During specific use, for example, in northern weather where the temperature is low in winter and freezing is easy, when the sensor detects that the temperature in the pipeline of the hot water equipment is too low, the water pump 50 is started, hot water with certain heat is extracted from the phase change energy storage device 10 through the first communication pipe 60 and circulates in the pipeline, and the pipeline is prevented from freezing. In addition, compared with the traditional method of preventing freezing by adopting an electric heating rod, the method is more energy-saving. In addition, the condensate water generated on the pipe wall can be reduced, and the problem of corrosion and perforation of the pipeline condensate water is further improved.

It should be noted that while one of the elements is described as being connected to another element and one of the elements is described as being attached to another element, it should be understood that the two elements may be connected by, for example, bolts, screws, pins, rivets, or other mounting means, or may be fixedly connected by snapping, welding, or integral molding. Wherein, the integrated molding mode can adopt the processes of extrusion, casting, press fitting, injection molding and the like.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A phase change energy storage device, characterized in that said phase change energy storage device (10) comprises:

the heat insulation structure comprises an inner shell (11), an outer shell (12) and a heat insulation material (13), wherein the inner shell (11) is sleeved inside the outer shell (12), and the heat insulation material (13) is filled in an area between the inner shell (11) and the outer shell (12);

the heat exchange component (14) comprises a heat exchange tube (141), a water inlet connecting tube (142) and a water outlet connecting tube (143), two ends of the heat exchange tube (141) are respectively connected with the water inlet connecting tube (142) and the water outlet connecting tube (143), the heat exchange tube (141) is arranged inside the inner shell (11), and the water inlet connecting tube (142) and the water outlet connecting tube (143) sequentially penetrate through the inner shell (11) and the outer shell (12) and extend out of the outer shell (12);

the phase change material (15) is filled in the inner shell (11) and positioned outside the heat exchange pipe (141).

2. The phase change energy storage device according to claim 1, wherein the inner housing (11) is provided with a first injection port (111), and a first blocking member (112) detachably provided to the first injection port (111).

3. The phase change energy storage device according to claim 2, wherein a connecting pipe (113) is disposed on the inner casing (11), an opening wall of the first injection opening (111) is connected to one end of the connecting pipe (113), a first avoidance hole (121) corresponding to the position of the connecting pipe (113) is disposed on the outer casing (12), the connecting pipe (113) is disposed in the first avoidance hole (121), the first blocking piece (112) is detachably disposed at the other end of the connecting pipe (113), and the first blocking piece (112) is disposed outside the outer casing (12).

4. The phase-change energy storage device as claimed in claim 3, wherein the first blocking piece (112) is a first bolt, and the inner wall of the other end of the connecting pipe (113) is provided with a thread corresponding to the first bolt; first bolt overcoat is equipped with first sealed pad (114), first sealed pad (114) contradict in the head of first bolt with between connecting pipe (113) other end terminal surface.

5. The phase change energy storage device according to claim 1, wherein the thermal insulation material (13) is a foamed material; the heat insulation material (13) is filled in the area between the inner shell (11) and the outer shell (12); the heat insulation material (13) is wrapped outside the inner shell (11).

6. The phase change energy storage device according to claim 5, wherein the outer housing (12) is provided with a second injection port (122), and a second blocking piece (123) detachably provided to the second injection port (122).

7. The phase change energy storage device according to claim 1, wherein the inner housing (11) comprises a first cylinder (115) and a first cover (116), one end of the first cylinder (115) is provided with a first opening (1151), the other end of the first cylinder (115) is a closed end, and the first cover (116) is detachably disposed at one end of the first cylinder (115) provided with the first opening (1151); the outer shell (12) comprises a second cylinder (124) and a second cover body (125), a second opening (1241) is formed in one end of the second cylinder (124), the other end of the second cylinder (124) is a closed end, and the second cover body (125) is detachably arranged at one end, provided with the second opening (1241), of the second cylinder (124).

8. The phase change energy storage device according to claim 7, wherein a first guide pipe (1161) and a second guide pipe (1162) are arranged on the plate surface of the first cover body (116), and a second avoidance hole (1251) corresponding to the first guide pipe (1161) and a third avoidance hole (1252) corresponding to the second guide pipe (1162) are arranged on the second cover body (125); the first guide pipe (1161) is disposed in the second avoidance hole (1251), and the second guide pipe (1162) is disposed in the third avoidance hole (1252); the water inlet connecting pipe (142) is sleeved in the first guide pipe (1161), and the water outlet connecting pipe (143) is sleeved in the second guide pipe (1162).

9. The phase change energy storage device as claimed in any one of claims 1 to 8, wherein the heat exchange tube (141) is an S-shaped tube, and a heat exchange fin (1413) is arranged on the outer wall of the heat exchange tube (141).

10. A hot water apparatus, characterized in that the hot water apparatus comprises the phase change energy storage device (10) according to any one of claims 1 to 9, and the water inlet connector (142) and the water outlet connector (143) are arranged on a hot water outlet pipe (20) of the hot water apparatus in series.

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