CN111442540A - Temperature adjusting mechanism, gas water heater, control method of gas water heater and readable storage medium - Google Patents
Temperature adjusting mechanism, gas water heater, control method of gas water heater and readable storage medium Download PDFInfo
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- CN111442540A CN111442540A CN202010405944.2A CN202010405944A CN111442540A CN 111442540 A CN111442540 A CN 111442540A CN 202010405944 A CN202010405944 A CN 202010405944A CN 111442540 A CN111442540 A CN 111442540A
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- heat exchange
- exchange unit
- water
- temperature
- water heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/028—Control arrangements therefor
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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 invention relates to a temperature adjusting mechanism, a gas water heater, a control method of the gas water heater and a readable storage medium. The temperature adjustment mechanism comprises: the heat exchange device comprises a driving module and a heat exchange module; the heat exchange module comprises: the heat exchange unit comprises a plurality of heat exchange units which can be opened and closed and can also store energy in a phase-change manner, and a pipeline clamping cavity for heat exchange is formed in each heat exchange unit when the heat exchange unit is in a closed state; the driving module is used for receiving the opening and closing instruction and controlling the opening and closing of each heat exchange module based on the opening and closing instruction. The temperature adjusting mechanism can be applied to a gas water heater, so that when the flow of cold water of the gas water heater fluctuates, the driving module receives the opening and closing instruction and closes the heat exchange unit of the heat exchange module based on the opening and closing instruction, so that the heat exchange unit can exchange heat with hot water in the water outlet pipe by utilizing the characteristic of phase-change energy storage of the heat exchange unit, the temperature of the hot water in the water outlet pipe is increased or reduced, the temperature of the outlet water is maintained at the preset outlet water temperature, and the user experience can be further improved.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a temperature adjusting mechanism, a gas water heater, a control method of the gas water heater and a readable storage medium.
Background
The gas water heater is also called as a gas water heater, and the gas water heater takes gas as fuel and transfers heat into cold water in a combustion heating mode so as to achieve the purpose of preparing hot water. Wherein, the gas heater is generally connected with a plurality of water consumption points to satisfy user's different water demand.
However, in the conventional gas water heater, the flow rate of cold water flowing into the gas water heater is reduced or increased due to the increase or decrease of the number of water consumption points during the use process, which causes the outlet water temperature of the gas water heater to be higher or lower, resulting in poor user experience.
Disclosure of Invention
Based on this, it is necessary to provide a temperature adjustment mechanism, a gas water heater, a control method thereof, and a readable storage medium, for solving the problem that the hot water temperature is unstable due to the fluctuation of the flow rate of cold water.
A temperature adjustment mechanism, comprising: the heat exchange device comprises a driving module and a heat exchange module;
the heat exchange module comprises: the heat exchange unit comprises a plurality of heat exchange units which can be opened and closed and can also store energy in a phase-change manner, wherein a pipeline clamping cavity for heat exchange is formed in each heat exchange unit when the heat exchange unit is in a closed state;
the driving module is used for receiving a switching instruction and controlling the on and off of each heat exchange unit based on the switching instruction.
In one embodiment, each of the heat exchange units comprises: the phase change energy storage device comprises a plurality of phase change energy storage elements, wherein each phase change energy storage element is provided with an accommodating groove;
when the heat exchange unit is in a closed state, the accommodating grooves in the phase change energy storage elements can be enclosed into the pipeline clamping cavity.
In one embodiment, the receiving groove is an arc-shaped groove.
In one embodiment, the number of the phase change energy storage elements is set to be 2.
In one embodiment, each of the phase change energy storage elements includes: the phase change energy storage device comprises a phase change energy storage medium layer and a protective layer coated on the outer part of the phase change energy storage medium layer;
the phase change energy storage medium layer is made of a solid-liquid phase change material or a solid-solid phase change material.
In one embodiment, the driving module includes: the heat exchange unit comprises a plurality of heat exchange units, a plurality of driving units and a plurality of heat exchange units, wherein each driving unit corresponds to each heat exchange unit one to one;
each of the driving units includes: and each driving piece is used for receiving the opening and closing instruction and corresponds to each phase change energy storage piece one to one.
In one embodiment, each of the driving members includes: the elastic piece and the electric pushing piece are used for receiving the opening and closing command;
when the opening and closing instruction is used for indicating to close the corresponding heat exchange unit, the electric pushing piece is also used for pushing the corresponding phase change energy storage piece until the corresponding heat exchange unit is closed;
the elastic pieces are connected with the corresponding phase change energy storage pieces and are in a stretching state when the corresponding heat exchange units are closed.
A gas water heater, comprising: the temperature control device comprises a water heater main body, a controller and any one of the temperature control mechanisms, wherein the controller is positioned in the water heater main body;
the water heater main body is provided with a flow sensor and a temperature sensor which are electrically connected with the controller, the flow sensor is used for acquiring and sending the flow of cold water in a water inlet pipe of the water heater main body, and the temperature sensor is used for acquiring and sending the temperature of hot water in a water outlet pipe of the water heater main body;
the heat exchange module of the temperature adjusting mechanism is positioned at the upstream of the temperature sensor, and when the heat exchange unit of the heat exchange module is in a closed state, the heat exchange unit clamps the water outlet pipe through a pipeline clamping cavity of the heat exchange module so as to exchange heat with hot water in the water outlet pipe;
the controller is used for driving a driving module of the temperature adjusting mechanism to close the heat exchange units when the cold water flow fluctuates, and adjusting the closing number of the heat exchange units and the combustion power of the water heater main body based on the hot water temperature in the heat exchange process.
In one embodiment, the controller is configured to close the heat exchange units one by one through the driving module based on the outlet water temperature.
In one embodiment, each heat exchange unit is provided with a self-checking unit electrically connected with the controller, and the self-checking unit is used for detecting whether the heat exchange unit in a closed state completes heat storage or not and sending a detection result and position information of the heat exchange unit to the controller;
the controller is used for determining the position information of each heat exchange unit for finishing heat storage based on the detection result and the corresponding position information of the heat exchange unit, and controlling the opening and closing of each heat exchange unit based on the position information when the cold water flow fluctuates next time.
In one embodiment, the controller is used for turning on the heat exchange units completing heat storage one by one through the driving module of the temperature regulating mechanism and gradually reducing the combustion power of the water heater main body simultaneously during the process that the heat exchange module stores heat.
In one embodiment, the controller is used for turning on the heat exchange units one by one through the driving module and gradually increasing the combustion power of the water heater main body simultaneously during the heat release process of the heat exchange module.
A control method of a gas water heater of any one of the above, the control method comprising:
acquiring cold water flow in a water inlet pipe and hot water temperature in a water outlet pipe of a water heater main body;
when the cold water flow fluctuates, the heat exchange unit is closed to enable the heat exchange unit to exchange heat with hot water in the water outlet pipe, and the closed number of the heat exchange unit and the combustion power of the water heater main body are adjusted based on the hot water temperature in the heat exchange process.
In one embodiment, the closing heat exchange unit when the cold water flow fluctuates comprises: and closing the heat exchange units one by one based on the temperature information when the flow of the cold water fluctuates.
In one embodiment, the control method further includes:
detecting whether the heat exchange unit in a closed state completes heat storage or not and acquiring position information of the heat exchange unit;
and determining the position information of each heat exchange unit for finishing heat storage based on the detection result and the position information of the heat exchange units, and controlling the opening and closing of each heat exchange unit based on the position information when the cold water flow fluctuates next time.
In one embodiment, after the detecting whether the heat exchange unit in the closed state completes heat storage, the control method further includes:
and opening the heat exchange units which finish heat storage one by one based on the outlet water temperature and gradually reducing the combustion power of the water heater main body.
In one embodiment, the adjusting the number of the heat exchange units and the combustion power of the water heater body based on the hot water temperature during the heat exchange process includes:
and in the process of releasing heat by the heat exchange module, the heat exchange units are opened one by one based on the outlet water temperature, and the combustion power of the water heater main body is gradually increased at the same time.
A readable storage medium, having stored thereon a computer program which, when executed by a processor, carries out the steps of the control method of any of the above.
According to the temperature adjusting mechanism, the gas water heater and the control method thereof and the readable storage medium, when the flow of cold water fluctuates, the controller drives the driving module to close the heat exchange unit of the heat exchange module so as to exchange heat with hot water in the water outlet pipe by utilizing the characteristic that the heat exchange unit can store energy in a phase-change manner, so as to increase or reduce the temperature of the hot water in the water outlet pipe, and the controller adjusts the closing number of the heat exchange unit and the combustion power of the water heater main body based on the temperature of the hot water in the heat exchange process, so that the temperature of the outlet water can. It can be seen that the cooperation of controller and drive module makes heat exchange unit automatically exchange heat with the hot water in the outlet pipe under the condition that cold water flow fluctuates and combustion power has not been adjusted correspondingly as above-mentioned gas heater to increase or reduce the hot water temperature in the outlet pipe, make the outlet water temperature invariable, this not only can improve user experience, but also can cyclic utilization outlet pipe hot water's heat maintain the outlet water temperature invariable, have energy-conserving effect.
Drawings
FIG. 1 is a schematic structural diagram of a gas water heater according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1 at A;
fig. 3 is a schematic structural diagram of a driving module of a heat exchange unit in an open state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a driving module of a heat exchange unit in a closed state according to an embodiment of the present invention;
fig. 5 is a logic block diagram of a control method of a gas water heater according to an embodiment of the present invention.
Wherein:
110-a flow sensor;
120-a temperature sensor;
130-a water inlet pipe;
140-a water outlet pipe;
150-a housing;
160-a fan;
170-heat exchanger;
180-fire grate;
181-an ignition needle;
182-fire detection needle;
190-an air inlet pipe;
191-a segment valve;
192-a gas distribution valve;
210-a drive unit;
211-a drive member;
2111-electric pusher;
2112-an elastic member;
2113-head plate;
2114-stent;
300-a heat exchange module;
310-a heat exchange unit;
311-a phase change energy storage element;
311 a-accommodating groove.
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.
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 invention 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 invention.
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.
As shown in fig. 2 and 3, an embodiment of the present invention provides a temperature adjustment mechanism, including: a driving module and a heat exchange module 300; the heat exchange module 300 includes: the heat exchange units 310 can be opened and closed and can also store energy in a phase-change manner, and each heat exchange unit 310 is provided with a pipeline clamping cavity for heat exchange when in a closed state; the driving module is used for receiving the opening and closing instruction and controlling the opening and closing of each heat exchange unit 310 based on the opening and closing instruction.
It should be noted that, the heat exchanging unit 310 uses its own Phase Change Material (PCM) to store (i.e. absorb heat) and release (i.e. release heat) when a Phase Change occurs, specifically, when the Phase Change Material is converted from a solid state to a liquid state or from a liquid state to a gas state or from a solid state to a gas state (sublimation), latent heat of Phase Change is absorbed, and when a reverse process is performed, Phase Change heat is released.
As an example, the temperature adjustment mechanism can be applied to a gas water heater to solve the problem of unstable hot water temperature of the gas water heater due to fluctuation of cold water flow by using the principle of phase change energy storage of the heat exchange unit 310. It will be appreciated that the type of phase change material determines the temperature after heat storage itself is complete and that the phase change material may be selected for use in accordance with the usual temperature of the water usage point, for example, water usage points for showers are typically around 42 c and phase change materials may be selected that may have a temperature up to around 50 c after heat storage is complete. The gas water heater is provided with a fire grate 180 for heating, and the water inlet pipe 130 and the water outlet pipe 140 are respectively provided with a flow sensor 110 and a temperature sensor 120.
Optionally, the driving module may be electrically connected with a controller of the gas water heater to receive the opening and closing instruction sent by the controller. The following describes how the temperature adjustment mechanism achieves adjustment of the hot water temperature of the gas water heater:
during the use of the gas water heater, the flow sensor 110 can be used to obtain and send the cold water flow in the inlet pipe 130 of the water heater body in real time, and the temperature sensor 120 can be used to obtain and send the hot water temperature in the outlet pipe 140 of the water heater body in real time. When the flow rate of the cold water flowing into the water inlet pipe 130 is decreased due to the increase of the number of water consumption points, the combustion power output by the fire grate 180 is not adjusted, so that the temperature of the hot water acquired by the temperature sensor 120 tends to increase, and the controller drives the driving module to close the heat exchange unit 310 to absorb the heat of the hot water in the water outlet pipe 140, thereby achieving the purpose of reducing the temperature of the hot water flowing out of the water outlet pipe 140. In the process of heat absorption of the heat exchange unit 310, the controller adjusts the number of the heat exchange unit 310 to maintain the outlet water temperature constant based on the hot water temperature transmitted by the temperature sensor 120 in real time, and also adjusts the combustion power of the fire grate 180 in the heat exchange process, so that after the heat absorption of the heat exchange module 300 is completed, the outlet water temperature can be kept constant on the premise that the flow of the subsequent cold water is not fluctuated any more by setting the combustion power of the fire grate 180 to a power value matched with the flow.
Similarly, when the amount of water used at the water consumption point is decreased to increase the flow rate of cold water flowing into the water inlet pipe 130, the combustion power output by the fire grate 180 is not adjusted, so that the temperature of hot water obtained by the temperature sensor 120 tends to decrease, and the controller drives the driving module to close the heat exchanging unit 310, so as to release heat to the hot water in the water outlet pipe 140, thereby increasing the temperature of the hot water flowing out of the water outlet pipe 140. In the process of heat release of the heat exchange unit 310, the controller can adjust the closing number of the heat exchange unit 310 based on the hot water temperature transmitted by the temperature sensor 120 in real time to maintain the outlet water temperature constant, and also adjust the combustion power of the fire grate 180 in the process of heat exchange, so that after the heat release of the heat exchange module 300 is completed, the outlet water temperature can be made constant on the premise that the subsequent cold water flow does not fluctuate any more by setting the combustion power of the fire grate 180 to a power value matched with the flow.
Therefore, the temperature adjustment mechanism can be applied to a gas water heater, and when the flow of cold water of the gas water heater fluctuates, the driving module receives the switching instruction and closes the heat exchange unit 310 of the heat exchange module 300 based on the switching instruction, so that the heat exchange unit 310 can perform heat exchange with hot water in the water outlet pipe 140 by using the characteristic of phase change energy storage of the heat exchange unit 310, the temperature of the hot water in the water outlet pipe 140 is increased or reduced, and the temperature of the outlet water is maintained at the preset outlet water temperature, which not only can improve user experience, but also can circularly utilize the heat of the hot water in the water outlet pipe 140 to maintain the outlet water temperature constant, and has the effect of energy saving.
Regarding the structure of the heat exchange unit 310, the present invention gives two examples:
type (1), in some embodiments of the present invention, each heat exchange unit 310 comprises: a phase change energy storage element 311 and a cover plate; the phase change energy storage element 311 is provided with an accommodating groove 311 a; the cover plate is covered on the phase change energy storage element 311 to form a pipeline clamping cavity in cooperation with the accommodating groove 311 a. The heat exchange unit 310 is simple in structure and convenient to process.
In item (2), as shown in fig. 3 and 4, in some embodiments of the present invention, each heat exchange unit 310 comprises: a plurality of phase change energy storage elements 311, each phase change energy storage element 311 being provided with an accommodation groove 311 a; when the heat exchange unit 310 is in a closed state, the accommodating grooves 311a of the plurality of phase change energy storage elements 311 may be enclosed to form a pipeline clamping cavity. Thus, the contact area between the heat exchange unit 310 and the water outlet pipe 140 can be increased, so that the heat exchange area between the heat exchange unit 310 and the water outlet pipe is increased, and the heat exchange efficiency is improved. It will be appreciated that the line clamping cavity is shaped to match the profile of outlet pipe 140, for example if outlet pipe 140 is a round tube, the line clamping cavity is configured as a round cavity having the same diameter as the outer diameter of outlet pipe 140.
Further, in some embodiments of the present invention, the receiving groove 311a is an arc-shaped groove. Wherein the arc-shaped slot is adapted to the profile of the outlet pipe 140. Therefore, the whole side wall of the accommodating groove 311a of each heat exchange unit 310 can be ensured to be in contact with the outer wall of the water outlet pipe 140, and the heat exchange area is increased.
In some embodiments of the present invention, as shown in fig. 3 and 4, the number of the phase-change energy storage elements 311 is set to 2. Therefore, the heat exchange efficiency of the heat exchange units 310 and the water outlet pipe 140 can be ensured, the number of the phase change energy storage elements 311 arranged on each heat exchange unit 310 can be reduced, and the processing of the heat exchange units 310 is facilitated.
It can be understood that, when the water outlet pipe 140 is a circular pipe, the accommodating groove 311a formed in each phase change energy storage element 311 is a semicircular groove (see fig. 3 and 4).
In particular to some embodiments of the present invention, each phase change energy storage element 311 includes: the phase change energy storage medium layer and the protective layer are coated on the outer part of the phase change energy storage medium layer; the phase change energy storage medium layer is made of a solid-liquid phase change material or a solid-solid phase change material. The phase change energy storage element 311 has the advantages of high energy storage density, simple structure, small volume, flexible design and convenient use.
Optionally, the material of the protective layer is a material that is easy to transfer heat, such as aluminum.
Optionally, the phase-change energy storage medium layer is made of a solid-liquid phase-change material such as paraffin or a solid-solid phase-change material such as an alloy (e.g., scandium, antimony, tellurium).
In some embodiments of the present invention, as shown in fig. 3 and 4, the driving module includes: a plurality of driving units 210, each driving unit 210 corresponding to each heat exchange unit 310 one by one; each of the driving units 210 includes: and a plurality of driving members 211, wherein each driving member 211 is electrically connected with the controller and corresponds to each phase change energy storage member 311 one by one. It can be understood that the number of the driving units 210 is the same as that of the heat exchange units 310, and the number of the driving members 211 of each driving unit 210 is the same as that of the phase change energy storage members 311 of each heat exchange unit 310. So, drive module can drive phase change energy storage part 311 closure and the opening that corresponds accurately, does benefit to the accurate control of water heater leaving water temperature.
In some embodiments of the present invention, as shown in fig. 3 and 4, each driving member 211 includes: an elastic member 2112 and an electric pushing member 2111 for receiving an opening and closing command; when the opening and closing instruction is used to instruct to close the corresponding heat exchange unit 310, the electrical pushing component 2111 is further used to push the corresponding phase change energy storage component 311 until the corresponding heat exchange unit 310 is closed; the elastic member 2112 is connected to the corresponding phase change energy storage member 311, and is in a stretched state when the corresponding heat exchange unit 310 is closed. When the cold water flow fluctuates, the controller drives the electric pushing element 2111 to push the corresponding phase change energy storage element 311 towards the direction of the water outlet pipe 140 until the corresponding heat exchange unit 310 is closed, and simultaneously stretches the elastic element 2112; after the corresponding phase change energy storage element 311 finishes storing heat or releasing heat, the controller drives the electric push element 2111 to retract, and at this time, the elastic element 2112 resets, so as to drive the corresponding phase change energy storage element 311 to slide towards the direction far away from the water outlet pipe 140, thereby opening the heat exchange unit 310.
As an example, the electric push 2111 is electrically connected to a controller of a gas water heater.
Alternatively, the electric pusher 2111 may be a hydraulic cylinder or an electric push rod or a crank link rotated by a motor. For the electric push rod 2111 of the crank connecting rod structure, the controller can drive the motor to rotate forward to drive the crank connecting rod to jack up the corresponding phase change energy storage element 311 to move towards the direction of the water outlet pipe 140 until the heat exchange unit 310 is closed; of course, the controller can also drive the motor to rotate reversely so as to drive the crank connecting rod to reset.
Optionally, for the electric pusher 2111 of the hydraulic cylinder or electric push rod structure, the electric pusher 2111 includes: the pushing pipe bodies are nested from outside to inside in sequence, and a top plate 2113 (see fig. 3 and 4) is arranged at the top of the pushing pipe body at the innermost layer. In this way, the top plate 2113 can effectively push the phase change energy storage element 311 to move. It will be appreciated that when the electrical pusher 2111 is in the retracted state, the top of the innermost pusher tube projects to the outside.
Alternatively, the elastic member 2112 may be a spring. Both the elastic member 2112 and the electric pushing member 2111 can be fixed in the housing 150 of the water heater main body through the same bracket 2114 (see fig. 3 and 4). In addition, the bracket 2114 and the phase change energy storage element 311 are both provided with a limiting column, and both ends of the elastic element 2112 are sleeved on the corresponding limiting columns.
As shown in fig. 1, another embodiment of the present invention provides a gas water heater, including: the water heater comprises a water heater main body, a controller and the temperature adjusting mechanism (see figure 2) which are positioned in the water heater main body; the water heater main body is provided with a flow sensor 110 and a temperature sensor 120 which are electrically connected with the controller, the flow sensor 110 is used for acquiring and sending cold water flow in a water inlet pipe 130 of the water heater main body, and the temperature sensor 120 is used for acquiring and sending hot water temperature in a water outlet pipe 140 of the water heater main body; the heat exchange module 300 is located upstream of the temperature sensor 120, and when the heat exchange unit 310 of the heat exchange module is in a closed state, the heat exchange unit clamps the water outlet pipe 140 through its own pipe clamping cavity, so as to exchange heat with the hot water in the water outlet pipe 140; the controller is used for driving the driving module of the temperature regulating mechanism to close the heat exchange unit 310 when the cold water flow fluctuates, and adjusting the closing number of the heat exchange unit 310 and the combustion power of the water heater main body based on the hot water temperature in the heat exchange process.
Wherein, as shown in fig. 1, the gas water heater main body includes: the shell 150, the blower 160, the heating component, the water inlet pipe 130, the water outlet pipe 140 and the air inlet pipe 190 which are all arranged in the shell 150; the heating assembly includes: the device comprises a heat exchanger 170 and a fire bar 180 for heating the shell pass of the heat exchanger, wherein an ignition needle 181 and a fire detection needle 182 are arranged on the fire bar 180; the water inlet pipe 130 and the water outlet pipe 140 are respectively communicated with a pipe pass inlet and a pipe pass outlet of the heat exchanger 170; the air inlet pipe 190 is communicated with the fire grate 180 through a sectional valve 191, and the air inlet pipe 190 is further provided with a fuel gas proportional valve 192 electrically connected with the controller so as to adjust the flow proportion of fuel gas and air and further adjust the combustion power. Note that the black arrows shown in fig. 1 represent the direction of gas flow. Alternatively, the number of the ignition needles 181 may be set to 2; in addition, the temperature sensor 120 is disposed near the water outlet of the water heater main body.
As an example, the controller may be P L C (Programmable logic controller, Programmable L g cController).
As described above, when the flow of cold water fluctuates, the controller drives the driving module to close the heat exchange unit 310 of the heat exchange module 300, so as to exchange heat with hot water in the water outlet pipe 140 by using the characteristic of phase-change energy storage of the heat exchange unit 310, so as to increase or decrease the temperature of hot water in the water outlet pipe 140, and the controller adjusts the closing number of the heat exchange unit 310 and the combustion power of the water heater main body based on the temperature of hot water in the heat exchange process, so as to keep the temperature of outlet water constant. Therefore, the gas water heater described above enables the heat exchange unit 310 to automatically exchange heat with the hot water in the water outlet pipe 140 under the condition that the flow of the cold water fluctuates and the combustion power is not correspondingly adjusted through the cooperation of the controller and the driving module, so as to increase or decrease the temperature of the hot water in the water outlet pipe 140 and make the temperature of the outlet water constant, which not only can improve the user experience, but also can maintain the temperature of the outlet water constant by recycling the heat of the hot water in the water outlet pipe 140, thereby having the effect of energy saving.
In some embodiments of the present invention, the controller is configured to close heat exchange units 310 one by the drive module based on the temperature information. When the flow sensor 110 detects that the flow of the cold water fluctuates, the cold water at the upstream of the flow sensor 110 is normally heated by the heating assembly, and the flow of the cold water at the part does not change, so that the temperature of the part after being heated by the flow of the cold water also does not fluctuate. When cold water with fluctuating flow passes through the heat exchange module 300 after being heated by the heating assembly, the closing number of the heat exchange module 300 is gradually increased, and the heat exchange time of the water outlet pipe 140 is gradually increased, so that the temperature of hot water flowing through can be effectively adjusted, and the temperature of the hot water outlet of the part is ensured to be constant.
Optionally, the controller is configured to transmit a closing instruction to the driving module every preset time interval based on the outlet water temperature, where the closing instruction is used to instruct the driving module to close the corresponding heat exchange unit 310. Optionally, the preset time period may be 0.5S to 1S.
Alternatively, the flow sensor 110 may be provided at the water inlet of the water heater body.
In some embodiments of the present invention, each of the heat exchange units 310 is provided with a self-checking unit electrically connected to the controller, and the self-checking unit is configured to detect whether the heat exchange unit 310 in a closed state completes heat storage, and send a detection result and position information of the heat exchange unit 310 to the controller; the controller is configured to determine position information of each heat exchange unit 310 that completes heat storage based on the detection result and the corresponding position information of the heat exchange unit 310, and control opening and closing of each heat exchange unit 310 based on the position information when the flow rate of the cold water fluctuates next time. When the flow rate of the cold water becomes small, the heat exchange unit 310 is closed to exchange heat with the hot water in the water outlet pipe 140 to achieve heat storage. In this process, the self-test unit on the heat exchange unit 310 detects whether the heat exchange unit 310 in the closed state completes heat storage in real time and sends the detection result and the corresponding position information of the heat exchange unit 310 to the controller, and then the controller can determine the position information of each heat exchange unit 310 that completes heat storage. When the cold water flow rate is increased next time, the heat exchange unit 310 which completes heat storage can be closed, so that hot water in the water outlet pipe 140 can be effectively heated, and heat can be effectively recycled; similarly, when the flow of cold water becomes smaller next time, the heat exchange unit 310 without heat storage can be closed, so as to effectively refrigerate hot water in the water outlet pipe 140, and also effectively recycle heat.
It should be noted that each phase change energy storage element 311 on each heat exchange unit 310 is provided with a self-checking unit.
Alternatively, the self-test unit may be a temperature sensor electrically connected to the controller, and may be disposed on the protection layer on the corresponding phase change energy storage element 311. In addition, the temperature sensor also has an identification thereon, and the identification is used for indicating the position information of the heat exchange unit 310 corresponding to the identification.
Further, in some embodiments of the present invention, the controller is configured to turn on the heat exchange units 310 completing heat storage one by the driving module and gradually reduce the combustion power of the water heater body at the same time during the heat storage of the heat exchange module 300, so as to make the outlet water temperature constant. Therefore, when the flow of cold water becomes large next time, the temperature of the outlet water can be adjusted by closing the heat exchange unit 310 which finishes heat storage, the number of the heat exchange unit 310 which is closed can be reduced, and the controller can drive the driving module conveniently.
Further, in some embodiments of the present invention, the controller is configured to turn on the heat exchange units 310 one by the driving module and gradually increase the combustion power of the water heater body at the same time during the heat release of the heat exchange module 300, so as to make the outlet water temperature constant. It will be appreciated that when the heat exchange unit 310 in the closed state is fully open, the combustion power of the water heater body is also adjusted.
Another embodiment of the present invention provides a control method of a gas water heater as described above, whose logic block diagram is shown in fig. 5, the control method including:
acquiring the cold water flow in a water inlet pipe 130 and the hot water temperature in a water outlet pipe 140 of the water heater main body;
when the cold water flow fluctuates, the heat exchange unit 310 is closed to make the heat exchange unit 310 perform heat exchange with the hot water in the water outlet pipe 140, and the number of closed heat exchange units 310 and the combustion power of the water heater main body are adjusted based on the hot water temperature during the heat exchange process.
According to the control method, when the flow of the cold water fluctuates, the heat exchange unit 310 of the heat exchange module 300 is closed to exchange heat with the hot water in the water outlet pipe 140 by using the characteristic that the heat exchange unit 310 can store energy through phase change, so as to increase or decrease the temperature of the hot water in the water outlet pipe 140, and the closing number of the heat exchange unit 310 and the combustion power of the water heater main body are adjusted based on the temperature of the hot water in the heat exchange process, so that the temperature of the outlet water can be kept constant. Therefore, the control method can enable the heat exchange unit 310 to automatically exchange heat with the hot water in the water outlet pipe 140 under the condition that the flow of the cold water fluctuates and the combustion power is not correspondingly adjusted, so as to increase or decrease the temperature of the hot water in the water outlet pipe 140 and enable the temperature of the outlet water to be constant, which not only can improve the user experience, but also can maintain the temperature of the outlet water to be constant by circularly utilizing the heat of the hot water in the water outlet pipe 140, and has the effect of energy conservation.
As shown in fig. 5, in some embodiments of the present invention, before obtaining the cold water flow rate in the inlet pipe 130 and the hot water temperature in the outlet pipe 140 of the water heater main body, the control method further comprises: and judging whether water is used or not based on the flow of the cold water, and if the water is used, opening a fire grate of the water heater main body for heating. Note that, at this time, the heat exchange unit 310 is in an open state.
As shown in fig. 5, in some embodiments of the invention, heat exchange unit 310 may be closed by: heat exchange units 310 are closed one by one based on temperature information as the flow of cold water fluctuates. When the flow sensor 110 detects that the cold water flow fluctuates, the cold water at the upstream of the flow sensor 110 is heated by the heating assembly, and the temperature of the heated cold water flow does not fluctuate because the cold water flow of the part does not change, and at this time, the heat exchange units 310 are closed one by one to ensure that the closed number is not large and the heat exchange time is not long, so that the temperature of the heated cold water of the part is not greatly influenced and can be ignored. When cold water with fluctuating flow passes through the heat exchange unit 310 after being heated by the heating assembly, the closing number of the heat exchange unit 310 is gradually increased, and the heat exchange time of the water outlet pipe 140 is gradually increased, so that the temperature of hot water flowing through can be effectively adjusted, and the temperature of the hot water outlet of the part is ensured to be constant.
In some implementations of the invention, as shown in fig. 5, the control method further includes:
detecting whether the heat exchange unit 310 in the closed state completes heat storage and acquiring position information of the heat exchange unit 310; the position information of each heat exchange unit 310 that completes heat storage is determined based on the detection result and the position information of the heat exchange unit, and when the flow rate of the cold water fluctuates next time, the opening and closing of each heat exchange unit 310 is controlled based on the position information. When the flow rate of the cold water becomes small, the heat exchange unit 310 is closed to exchange heat with the hot water in the water outlet pipe 140 to achieve heat storage. In this process, whether the heat exchange unit 310 in the closed state completes heat storage is detected in real time, and the detection result and the corresponding position information of the heat exchange unit 310 are sent to the controller, so that the controller can determine the position information of each heat exchange unit 310 completing heat storage. When the cold water flow increases next time, the heat exchange unit 310 which completes heat storage can be closed, so that hot water in the water outlet pipe 140 can be effectively heated, and heat can be effectively recycled; similarly, when the flow of cold water becomes smaller next time, the heat exchange unit 310 without heat storage can be closed to effectively refrigerate the hot water in the water outlet pipe 140, and the heat can also be effectively recycled.
Further, as shown in fig. 5, in some embodiments of the present invention, after detecting whether the heat exchange unit 310 in the closed state completes heat storage, the control method further includes the following steps:
the heat exchange units 310 that finish heat storage are opened one by one based on the outlet water temperature and the combustion power of the water heater body is gradually reduced at the same time, so that the outlet water temperature is constant. Therefore, when the flow of cold water becomes large next time, the temperature of the outlet water can be adjusted by closing the heat exchange unit 310 which finishes heat storage, the number of the heat exchange unit 310 which is closed can be reduced, and the controller can drive the driving module conveniently.
In some embodiments of the present invention, as shown in fig. 5, adjusting the number of the heat exchange unit 310 closed and the combustion power of the water heater body based on the hot water temperature during the heat exchange process includes:
in the process of releasing heat by the heat exchange module 300, the heat exchange units 310 are turned on one by one based on the outlet water temperature and the combustion power of the water heater main body is gradually increased at the same time to maintain the hot water temperature constant. It will be appreciated that when the heat exchange unit 310 in the closed state is fully open, the combustion power of the water heater body is also adjusted.
Another embodiment of the present invention also provides a readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of the control method according to any one of the above.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 invention. 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.
Claims (18)
1. A temperature conditioning mechanism, characterized in that the temperature conditioning mechanism comprises: the heat exchange device comprises a driving module and a heat exchange module;
the heat exchange module comprises: the heat exchange unit comprises a plurality of heat exchange units which can be opened and closed and can also store energy in a phase-change manner, wherein a pipeline clamping cavity for heat exchange is formed in each heat exchange unit when the heat exchange unit is in a closed state;
the driving module is used for receiving a switching instruction and controlling the on and off of each heat exchange unit based on the switching instruction.
2. The temperature conditioning mechanism of claim 1, wherein each of the heat exchange units comprises: the phase change energy storage device comprises a plurality of phase change energy storage elements, wherein each phase change energy storage element is provided with an accommodating groove;
when the heat exchange unit is in a closed state, the accommodating grooves in the phase change energy storage elements can be enclosed into the pipeline clamping cavity.
3. The temperature adjustment mechanism of claim 2, wherein the receiving slot is an arcuate slot.
4. The temperature conditioning mechanism of claim 2, wherein the number of phase change energy storage members is set to 2.
5. The temperature conditioning mechanism of any of claims 2 to 4, wherein each of the phase change energy storage members comprises: the phase change energy storage device comprises a phase change energy storage medium layer and a protective layer coated on the outer part of the phase change energy storage medium layer;
the phase change energy storage medium layer is made of a solid-liquid phase change material or a solid-solid phase change material.
6. The temperature conditioning mechanism of any of claims 2-4, wherein the drive module comprises: the heat exchange unit comprises a plurality of heat exchange units, a plurality of driving units and a plurality of heat exchange units, wherein each driving unit corresponds to each heat exchange unit one to one;
each of the driving units includes: and each driving piece is used for receiving the opening and closing instruction and corresponds to each phase change energy storage piece one to one.
7. The temperature adjustment mechanism of claim 6, wherein each of the drive members comprises: the elastic piece and the electric pushing piece are used for receiving the opening and closing command;
when the opening and closing instruction is used for indicating to close the corresponding heat exchange unit, the electric pushing piece is also used for pushing the corresponding phase change energy storage piece until the corresponding heat exchange unit is closed;
the elastic pieces are connected with the corresponding phase change energy storage pieces and are in a stretching state when the corresponding heat exchange units are closed.
8. A gas water heater, comprising: a water heater body, a controller located in the water heater body and the temperature adjustment mechanism of any one of claims 1-7;
the water heater main body is provided with a flow sensor and a temperature sensor which are electrically connected with the controller, the flow sensor is used for acquiring and sending the flow of cold water in a water inlet pipe of the water heater main body, and the temperature sensor is used for acquiring and sending the temperature of hot water in a water outlet pipe of the water heater main body;
the heat exchange module of the temperature adjusting mechanism is positioned at the upstream of the temperature sensor, and when the heat exchange unit of the heat exchange module is in a closed state, the heat exchange unit clamps the water outlet pipe through a pipeline clamping cavity of the heat exchange module so as to exchange heat with hot water in the water outlet pipe;
the controller is used for driving a driving module of the temperature adjusting mechanism to close the heat exchange units when the cold water flow fluctuates, and adjusting the closing number of the heat exchange units and the combustion power of the water heater main body based on the hot water temperature in the heat exchange process.
9. The gas water heater of claim 8, wherein the controller is configured to close the heat exchange units one by the drive module based on the leaving water temperature.
10. The gas water heater according to claim 8, wherein each heat exchange unit is provided with a self-checking unit electrically connected with the controller, and the self-checking unit is configured to detect whether the heat exchange unit in a closed state completes heat storage and send a detection result and position information of the heat exchange unit to the controller;
the controller is used for determining the position information of each heat exchange unit for finishing heat storage based on the detection result and the corresponding position information of the heat exchange unit, and controlling the opening and closing of each heat exchange unit based on the position information when the cold water flow fluctuates next time.
11. The gas water heater of claim 10, wherein the controller is configured to turn on the heat exchange units completing heat storage one by the driving module while gradually reducing the combustion power of the water heater body during the heat storage of the heat exchange module.
12. The gas water heater of claim 8, wherein the controller is configured to turn on the heat exchange units one by the driving module while gradually increasing the combustion power of the water heater body during the heat release of the heat exchange module.
13. A control method for a gas water heater according to any one of claims 8 to 12, wherein the control method comprises:
acquiring cold water flow in a water inlet pipe and hot water temperature in a water outlet pipe of a water heater main body;
when the cold water flow fluctuates, the heat exchange unit is closed to enable the heat exchange unit to exchange heat with hot water in the water outlet pipe, and the closed number of the heat exchange unit and the combustion power of the water heater main body are adjusted based on the hot water temperature in the heat exchange process.
14. The control method of claim 13, wherein closing the heat exchange unit when the cold water flow fluctuates comprises: and closing the heat exchange units one by one based on the temperature information when the flow of the cold water fluctuates.
15. The control method according to claim 13, characterized by further comprising:
detecting whether the heat exchange unit in a closed state completes heat storage or not and acquiring position information of the heat exchange unit;
and determining the position information of each heat exchange unit for finishing heat storage based on the detection result and the position information of the heat exchange units, and controlling the opening and closing of each heat exchange unit based on the position information when the cold water flow fluctuates next time.
16. The control method according to claim 15, wherein after the detecting whether the heat exchange unit in the closed state completes heat storage, the control method further comprises:
and opening the heat exchange units which finish heat storage one by one based on the outlet water temperature and gradually reducing the combustion power of the water heater main body.
17. The control method according to claim 13, wherein the adjusting of the number of the heat exchange units closed and the combustion power of the water heater body based on the hot water temperature during the heat exchange process comprises:
and in the process of releasing heat by the heat exchange module, the heat exchange units are opened one by one based on the outlet water temperature, and the combustion power of the water heater main body is gradually increased at the same time.
18. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the control method according to any one of claims 13 to 17.
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