CN211601118U - Phase change energy storage heating assembly and instant electric water heater - Google Patents
Phase change energy storage heating assembly and instant electric water heater Download PDFInfo
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- CN211601118U CN211601118U CN201921204539.3U CN201921204539U CN211601118U CN 211601118 U CN211601118 U CN 211601118U CN 201921204539 U CN201921204539 U CN 201921204539U CN 211601118 U CN211601118 U CN 211601118U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The utility model discloses a phase change energy storage heating element and instant heating type electric water heater, phase change energy storage heating element, including heating container, electric heating component and phase change energy storage component set up on heating container, heating container has delivery port and water inlet, and heating container is provided with cavity and second cavity, is provided with phase change energy storage component and heat exchange pipe in the first cavity, and delivery port and water inlet communicate with first cavity respectively; an electric heating part is arranged in the second cavity, and the heat exchange pipe is communicated with the second cavity. Through forming two cavitys in heating container, separate electric heating part and phase transition energy storage part, install respectively in the cavity of difference, like this, the in-process that phase transition energy storage part takes place the phase transition because of temperature variation can not lead to the fact the influence to electric heating part to reduce the possibility that electric heating part appears damaging, improved the use reliability.
Description
Technical Field
The utility model belongs to the technical field of domestic appliance, especially, relate to a phase change energy storage heating element and instant heating type electric water heater.
Background
At present, water heaters are household appliances commonly used in daily life, wherein electric water heaters are widely used due to small volume, and instant water heaters with instant heating function are used by more users due to convenient use. In order to increase the hot water output of the instant water heater, chinese patent No. 201520398538.2 discloses an instant phase change energy storage water heater which adopts a phase change energy storage unit to store energy and further realize the function of preheating water. However, since the electric heating mechanism is directly disposed on the phase change material, the phase change material may corrode and cause adverse effects such as stress variation on the electric heating mechanism during the phase change process, thereby causing damage to the electric heating mechanism. The invention aims to solve the technical problem of how to design a phase change energy storage heating technology with high use reliability.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned technical problem who exists among the prior art, provide a phase transition energy storage heating element and instant heating type electric water heater, through arranging heater block and phase transition energy storage part in different cavitys, avoid phase transition energy storage part to cause the damage to electric heater block to improve the use reliability.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides a phase change energy storage heating assembly, including heating container, electric heating component and phase change energy storage component, electric heating component with phase change energy storage component sets up on the heating container, the heating container has delivery port and water inlet, the heating container is provided with first cavity and second cavity, be provided with in the first cavity phase change energy storage component and hot exchange pipe, delivery port and water inlet communicate with the first cavity respectively; the electric heating part is arranged in the second cavity, and the heat exchange tube is communicated with the second cavity.
Furthermore, the heat exchange pipe is also provided with a circulating water pump.
Furthermore, part of the heat exchange tubes are positioned outside the heating container, and the heat exchange tubes positioned outside the heating container are provided with the circulating water pump.
Furthermore, a heat-insulating sleeve is arranged outside the heat exchange pipe positioned outside the heating container.
Further, the water heater also comprises a drain valve, wherein the drain valve is arranged in the heating container and is used for draining the water stored in the heating container.
Furthermore, the heating container is provided with a water outlet and a water inlet, the height of the water outlet is lower than that of the water inlet, and the water outlet is also connected with the drain valve.
Furthermore, a vent valve is connected to the water inlet.
Further, still include water tank and water pump, the export of drain valve passes through the water pump with the access connection of water tank.
Further, the heating container comprises an outer shell and an inner shell, the inner shell is located in the outer shell, and a heat insulation layer is arranged between the outer shell and the inner shell.
The utility model also provides an instant heating type water heater, including instant heating element, still include above-mentioned phase change energy storage heating element, phase change energy storage heating element's delivery port with instant heating element's water inlet is connected.
Compared with the prior art, the utility model discloses an advantage is with positive effect: through forming two cavitys in heating container, separate electric heating part and phase transition energy storage part, install respectively in the cavity of difference, like this, the in-process that phase transition energy storage part takes place the phase transition because of temperature variation can not lead to the fact the influence to electric heating part to reduce the possibility that electric heating part appears damaging, improved the use reliability.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is one of the schematic diagrams of the instant electric water heater of the present invention;
fig. 2 is a second schematic diagram of the instant electric water heater according to the embodiment of the present invention;
fig. 3 is one of the schematic structural diagrams of the phase change energy storage heating assembly of the present invention;
fig. 4 is a second schematic structural view of the phase change energy storage heating assembly of the present invention;
fig. 5 is a third schematic structural view of the phase change energy storage heating assembly of the present invention;
fig. 6 is a flow chart of a control method of the instant electric water heater of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-6, the instant electric water heater of the present embodiment includes: a phase change energy storage heating assembly 1 and an instant heating assembly 2. Wherein, phase change energy storage heating element 1 can utilize the effect of phase change energy storage to store energy in advance and preheat water to improve the temperature of the water that enters into in the instant heating element 2, thereby under the condition that satisfies domestic electric wire to the restriction of electric current, improve hot water output volume on the whole.
The phase change energy storage heating assembly 1 comprises a first heating container 11, a first electric heating part 12 and a phase change energy storage part 13, wherein the first electric heating part 12 and the phase change energy storage part 13 are arranged on the first heating container 11, and the first heating container 11 is provided with a first water outlet 101 and a first water inlet 102;
the instant heating assembly 2 comprises a second heating container 21 and a second electric heating part 22, the second electric heating part 22 is arranged on the second heating container 21, and the second heating container 21 is provided with a second water outlet 201 and a second water inlet 202; the first water outlet 101 communicates with the second water inlet 202.
Specifically, in the actual use process, external water (for example, domestic tap water) is delivered into the first heating container 11 through a pipeline, the water is preheated and heated after exchanging heat with the phase change energy storage part 13 in the first heating container 11, and then the water output from the first heating container 11 enters the second heating container 21. Since the water entering the second heating container 21 is preheated in advance, the water can be heated to the set outlet water temperature more rapidly by the second electric heating part 22 and then output. Meanwhile, since the water in the second heating container 21 is preheated in advance, the function required for heating by the second electric heating part 22 is correspondingly reduced, so that the hot water output can be effectively increased under the condition of satisfying the current to the household electric wire. The expression entity of the phase change energy storage component 13 may be a phase change material added in the first heating container 11, and the present invention does not limit the expression entity of the phase change energy storage component 13.
Further, in order to increase the output of hot water to the maximum extent and effectively prolong the service time of the phase change energy storage component 13 in the first heating container 11, the instant electric water heater further includes: the main water inlet joint 3 and a bypass pipe 4, wherein a second control valve 41 is connected in series on the bypass pipe 4; a first control valve 14 is arranged on the first water inlet 101 of the first heating container 11; the inlet of the by-pass pipe 4 and the first control valve 14 are respectively connected with the main water inlet joint 3, and the outlet of the by-pass pipe 4 is also connected with the second water inlet of the second heating container 21. Specifically, the user may control the flow path of the external water source according to the heating amount requirement of the water during the actual use of the hot water. When the heating amount of the water is small and the heating requirement can be met only by the second electric heating part 22, the external water source directly enters the second heating container 21 through the bypass pipe 4 for heating treatment; at this time, the first control valve 14 is closed and the second control valve 41 is opened. When the heating amount of the water is large and the heating requirement cannot be met even under the condition that the second electric heating part 22 is at the maximum heating power, an external water source firstly enters the first heating container 11 to exchange heat with the phase change energy storage part 13, and then the preheated water enters the second heating container 21; at this time, the first control valve 14 is opened and the second control valve 41 is closed.
The specific control method comprises the following steps: in the process of heating water by the instant heating component 2, if the instant heating component 2 is at the maximum heating power and the outlet water temperature of the instant heating component 2 is lower than the set outlet water temperature, the water to be heated firstly enters the phase change energy storage heating component 1 to exchange heat with the phase change energy storage part 13 and then flows into the instant heating component 2 to be heated. Specifically, the second water outlet 201 is provided with a water outlet temperature sensor (not shown), and when the water outlet temperature of the second water outlet 201 detected by the water outlet temperature sensor is lower than the set water outlet temperature, the first control valve 14 is controlled to open and close the second control valve 41. The heat stored by the phase-change energy storage component 13 is used for preheating an external water source, so that the requirement of instant hot water output is met.
And under the condition that a user does not have a hot water demand, the phase change energy storage component 13 is heated and stored energy through the first electric heating component 12 according to the requirement. The control method further comprises the following steps: in the case where the second electric heating part 22 is in the power-off state, if the temperature of the phase change energy storage part 13 is lower than the first heating temperature, the phase change energy storage part 13 is heated by the first electric heating part 12 until the temperature of the phase change energy storage part 13 is higher than the second heating temperature; wherein the temperature value of the first heating temperature is less than the temperature value of the second heating temperature. Specifically, when the user does not use hot water, the second electric heating part 22 is in a power-off state at this time. Whether to start the first electric heating part 12 for heating is judged by checking the temperature of the phase change energy storage part 13 in the first heating container 11. That is, when the temperature of the phase change energy storage component 13 is lower than the first heating temperature, the first electric heating component 12 is powered on to heat the phase change energy storage component 13 until the temperature of the phase change energy storage component 13 rises to the second heating temperature. The specific temperature values of the first heating temperature and the second heating temperature may be set according to the specific phase change material used, and are not limited herein.
The instant heating assembly 2 may be embodied in various entities, such as: the second heating container 21 is a water tank, and the second electric heating part 22 is a heating coil arranged inside the water tank; alternatively, the second heating container 21 is a heat conduction water pipe, and the second electric heating member 22 is an electric heating film disposed outside the heat conduction water pipe. The concrete entity of the instant heating assembly 2 of the present invention can adopt the instant water heater structure in the conventional technology, and is not limited herein.
Based on the above technical solution, there are optionally a plurality of structural forms for the expression entity of the phase change energy storage heating assembly 1, which will be described below with reference to the accompanying drawings.
As shown in fig. 3, the first heating container 11 forms a single cavity inside, and the first electric heating part 12 and the phase change energy storage part 13 are both disposed in the cavity formed by the first heating container 11. Wherein, first heating container 11 includes shell body 112 and interior casing 111, and interior casing 111 is located shell body 112, is provided with heat preservation 113 between shell body 112 and the interior casing 111, and is concrete, adopts first heating container 11 that has the heat preservation function, can reduce the heat loss of phase transition energy storage component 13. In addition, a heat exchange water pipe 15 is further disposed in the first heating container 11, one pipe orifice of the heat exchange water pipe 15 is a first water outlet 101, and the other pipe orifice of the heat exchange water pipe 15 is a first water inlet 102. Specifically, an external water source flows in the first heating container 11 through the heat exchange water pipe 15, and in the flowing process, water in the heat exchange water pipe 15 can exchange heat with the external phase change energy storage component 13, so that the water flowing through the heat exchange water pipe 15 is preheated. And, as for the first electric heating part 12, the first electric heating part 12 is an electric heating pipe or an electric heating plate provided inside the first heating container 11.
Taking the first electric heating part 12 as an example of an electric heating tube, in order to increase the heat dissipation area, heat exchange fins 121 are disposed outside the electric heating tube, and the heat exchange fins 121 can rapidly transfer heat of the electric heating tube to heat the phase change energy storage part 13. In order to facilitate the fixed installation of the heat exchange water pipes 15, mounting holes (not labeled) may be provided on the heat exchange fins, and the heat exchange water pipes 15 are inserted into the mounting holes.
As shown in fig. 4, in order to effectively prolong the preheating service life of the phase change energy storage part 13, in the actual service process, in the case that the phase change energy storage part 13 is not needed to preheat water, the water in the first heating container 11 needs to be discharged. Specifically, the first heating container 11 is further provided with a drain valve 103, and in actual use, when the user does not use hot water, the water stored in the first heating container 11 is drained through the drain valve 103. Therefore, the first heating container 11 does not store water, so that the water can be prevented from continuously exchanging heat with the phase change energy storage part 13, and the heat energy stored in the phase change energy storage part 13 can be saved to the maximum extent. Preferably, a water pump 104 and a water tank 105 are further connected to the drain valve 103, and when it is necessary to drain the water stored in the first heating container 11, the drain valve 103 is opened and the water pump 104 is started, and the water stored is rapidly pumped out by the water pump 104 and conveyed to the water tank 105 for storage. The water stored in the water tank 105 can be output through a water pipe according to needs, for example, the water stored in the water tank 105 can be connected with a cold water faucet or a toilet through a water pipe for use by a user, so that waste of water resources is avoided.
In addition, in order to facilitate rapid discharge of the water stored in the first heating container 11, a vent valve 106 is further disposed on the first heating container, and specifically, in the water discharging process, when the water is not completely discharged due to negative pressure generated in the first heating container 11, the pressure in the first heating container 11 is adjusted by increasing the vent valve 106. During the water discharge, the water discharge valve 103 and the vent valve 106 are both opened, so that it can be ensured that the first heating container 11 is vented to the outside through the vent valve 106 during the water discharge to ensure that the internal pressure does not generate a negative pressure. Wherein, the height of first delivery port 101 is less than the height of first water inlet 102, and first delivery port 101 still is connected with drain valve 103, still is connected with breather valve 106 on the first water inlet 102, utilizes the difference in height to make the drainage more smooth and easy to cooperate water pump 104 alright realize high efficiency's drainage to reduce the heat of phase change energy storage part 13 and scatter and disappear.
As shown in fig. 5, two cavities, namely a first cavity and a second cavity, are formed inside the first heating container 11, wherein a phase change energy storage component 13, a heat exchange water pipe 15 and a heat exchange pipe 16 are arranged in the first cavity, and the first water outlet 101 and the first water inlet 102 are respectively communicated with the first cavity; the second cavity is provided with a first electric heating part 12, and the heat exchange pipe is communicated with the second cavity. Specifically, the phase change energy storage component 13 and the first electric heating component 12 are separately disposed in different cavities, so as to avoid the influence of damage, corrosion and the like on the first electric heating component 12 in the phase change process of the phase change energy storage component 13. In order to heat the phase change energy storage component 13 by the first electric heating component 12, the first electric heating component 12 heats a heat exchange medium (for example, water) added in the second cavity, and the heat exchange medium flows through the heat exchange tube 16 to dissipate heat so as to heat the phase change energy storage component 13 in the first cavity.
Wherein, in order to increase the flowing speed of the heat exchange medium in the heat exchange tube 16, the heat exchange efficiency is improved. The heat exchange pipe is further provided with a circulating water pump 161, and the circulating water pump 161 can drive the heat exchange medium to flow rapidly so as to accelerate the heating of the phase change energy storage component 13. In order to facilitate installation of the circulating water pump 161, a part of the heat exchange tubes 16 is located outside the first heating container 11, the circulating water pump 161 is disposed on the heat exchange tubes located outside the first heating container 11, and in order to avoid excessive heat dissipation from the heat exchange tubes located outside the first heating container 11, heat-insulating sleeves (not shown) are disposed outside the heat exchange tubes located outside the first heating container 11.
In addition, in the actual control process of the instant electric water heater, the method further comprises the following detailed control method:
in the actual control process, after the water outlet temperature of the water heater is set by a user, a water faucet is opened to output hot water outwards. The water heater executes the step S1, that is, the water flow is detected by the flow sensor, the specific installation and arrangement mode of the flow sensor in the water heater is not limited, and the water heater can trigger the instant heating assembly to be electrified and heated only on the premise of detecting the water flow. After detecting the water flow, step S2 is executed, i.e. heating is performed by the instant heating module 2 channel. In the process of heating water by the second electric heating part 22, if the water flowing through the second heating container 21 cannot be heated to the set outlet water temperature by the heat generated by the second electric heating part 22, step S3 is performed. Step S3, the water to be heated is controlled to enter the first heating container 11 to exchange heat with the phase change energy storage component 13 and then to flow into the second heating container 21 to be heated by the second electric heating component 22.
Further, in the actual use process, when the user does not use hot water, the phase change energy storage component 13 needs to be heated according to the requirement. The control method further comprises the following steps: in the case where the second electric heating part 22 is in the power-off state, if the temperature of the phase change energy storage part 13 is lower than the first heating temperature, the phase change energy storage part 13 is heated by the first electric heating part 12 until the temperature of the phase change energy storage part 13 is higher than the second heating temperature; wherein the temperature value of the first heating temperature is less than the temperature value of the second heating temperature. Specifically, when the user does not use hot water, at this time, the second electric heating part 22 is in a power-off state. Whether the first electric heating part 12 needs to be started for heating is judged according to the temperature of the phase change energy storage part 13.
Further, the control method further includes: in the case where the second electric heating part 22 is in the power-off state, the water stored in the first heating container 11 is drained. Specifically, when the user does not use hot water, in order to avoid the water in the first heating container 11 continuously exchanging heat with the phase change energy storage component 13, the water stored in the first heating container 11 is drained in time, the service time of the phase change energy storage component 13 can be prolonged more effectively, the duration of the power-on heating of the first electric heating component 12 is reduced, and therefore the energy consumption is effectively reduced. In the specific water discharge process, the water discharge valve through which the water in the first heating container 11 is discharged and the air vent valve are opened. Meanwhile, the water pump pumps out the water in the first heating container 11 through the drain valve and delivers the water to the water tank for storage.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (10)
1. A phase-change energy-storage heating assembly comprises a heating container, an electric heating part and a phase-change energy-storage part, wherein the electric heating part and the phase-change energy-storage part are arranged on the heating container; the electric heating part is arranged in the second cavity, and the heat exchange tube is communicated with the second cavity.
2. A phase change energy storage heating assembly according to claim 1, wherein the heat exchange tube is further provided with a circulating water pump.
3. A phase change energy storage heating assembly according to claim 2, wherein part of the heat exchange tubes are located outside the heating vessel, and the circulating water pump is provided on the heat exchange tubes located outside the heating vessel.
4. A phase change energy storage heating assembly according to claim 3 wherein a thermal jacket is provided outside the heat exchange tube outside the heating vessel.
5. The phase change energy storage heating assembly of claim 1, further comprising a drain valve disposed in the heating reservoir for draining water stored in the heating reservoir.
6. The phase change energy storage heating assembly of claim 5, wherein the water outlet is lower in height than the water inlet, and the water outlet is further connected with the drain valve.
7. The phase change energy storage heating assembly of claim 6, wherein a vent valve is further connected to the water inlet.
8. The phase change energy storage heating assembly of claim 5, further comprising a water tank and a water pump, wherein the outlet of the drain valve is connected to the inlet of the water tank through the water pump.
9. A phase change energy storage heating assembly according to claim 1, wherein the heating vessel comprises an outer shell and an inner shell, the inner shell being located within the outer shell, an insulating layer being provided between the outer shell and the inner shell.
10. An instant electric water heater, comprising an instant heating component, characterized in that it further comprises a phase change energy storage heating component as claimed in any one of claims 1-9, the water outlet of the phase change energy storage heating component is connected with the water inlet of the instant heating component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921204539.3U CN211601118U (en) | 2019-07-29 | 2019-07-29 | Phase change energy storage heating assembly and instant electric water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921204539.3U CN211601118U (en) | 2019-07-29 | 2019-07-29 | Phase change energy storage heating assembly and instant electric water heater |
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| CN211601118U true CN211601118U (en) | 2020-09-29 |
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| CN201921204539.3U Active CN211601118U (en) | 2019-07-29 | 2019-07-29 | Phase change energy storage heating assembly and instant electric water heater |
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