CN111197863A - High-temperature heat accumulating type water heater and heat accumulation control method and water using control method thereof - Google Patents
High-temperature heat accumulating type water heater and heat accumulation control method and water using control method thereof Download PDFInfo
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- CN111197863A CN111197863A CN201811376233.6A CN201811376233A CN111197863A CN 111197863 A CN111197863 A CN 111197863A CN 201811376233 A CN201811376233 A CN 201811376233A CN 111197863 A CN111197863 A CN 111197863A
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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
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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
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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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
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to the field of water heaters, in particular to a high-temperature heat accumulating type water heater and a heat accumulating control method and a water using control method thereof. The water heater comprises a heat pump unit and a water tank; the compressor, the evaporator and the condensing heat exchanger of the heat pump unit are connected in series to form a refrigerant flowing loop; the water tank is filled with phase-change materials, a water supply pipeline penetrates through the water tank and the condensation heat exchanger, the condensation heat exchanger is located in the water tank, and an electric heater is arranged on the water supply pipeline outside the water tank. The phase-change material can heat water in real time, the volume of the water heater is reduced, and the phase-change material stores heat, so that the purpose of energy conservation is achieved. The water supply pipeline passes through the condensation heat exchanger, and sets up electric heater, and electric heater can be phase change heat supply alone, and electric heater can also be phase change heat supply jointly with heat pump set's condensation scavenge air pipeline.
Description
Technical Field
The invention relates to the field of water heaters, in particular to a high-temperature heat accumulating type water heater and a heat accumulating control method and a water using control method thereof.
Background
At present domestic hanging air can water heater, generally be according to the characteristic of the specific heat capacity heat-retaining of water, heat pump system heats the water in the water tank, and the temperature is from low heating to user's settlement temperature, and the temperature of going out water receives heat pump system condensation temperature's restriction, because under higher condensation temperature, heat pump operating efficiency is than lower. And when the water quantity is more, the volume of the water tank is larger, and the weight is heavier. For a wall-mounted heat pump water heater: the large volume will occupy a lot of bathroom space, and the heavy weight of the unit will cause certain potential safety hazard for hanging on the bathroom wall. Therefore, it is very important to solve the volume and weight problems of the wall-mounted heat pump water heater.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a high-temperature heat accumulating type water heater, a heat accumulation control method and a water use control method thereof, and at least one problem is solved.
(II) technical scheme
In order to solve the technical problem, the invention provides a high-temperature heat accumulating type water heater, which comprises a heat pump unit and a water tank, wherein the heat pump unit and the water tank are arranged in a shell; the compressor, the evaporator and the condensing heat exchanger of the heat pump unit are connected in series to form a refrigerant flowing loop; the heat pump unit is positioned outside the water tank; the water tank is filled with phase-change materials, a water supply pipeline sequentially penetrates through the condensation heat exchanger and the water tank, the condensation heat exchanger is positioned outside the water tank, and an electric heater is arranged on the water supply pipeline outside the water tank.
In some embodiments, preferably, the water outlet end of the water supply pipeline is connected with the water inlet end of the water supply pipeline through a water mixing pipe, and the water mixing pipe is arranged outside the water tank.
In some embodiments, preferably, a warm water valve is arranged on the water mixing pipe.
In some embodiments, preferably, a water replenishing switch is arranged at the water inlet end of the water supply pipeline.
In some embodiments, it is preferable that a water flow signal detection switch is provided on the water supply line.
In some embodiments, preferably, more than one first thermometer is arranged in the water tank to detect the temperature of the phase change material; and a second thermometer is arranged at the water outlet end of the water supply pipeline.
In some embodiments, preferably, the water supply line is in contact with the phase change material.
The invention also provides a heat storage control method of the high-temperature heat storage type water heater, which comprises the following steps:
determining a heat storage mode, the heat storage mode including: an electric heating heat storage mode and a combined heat storage mode; the electric heater and the condensing heat exchanger simultaneously provide heat exchange energy in the combined heat storage mode;
after the heat storage mode is determined, acquiring a temperature value of the phase-change material, starting the determined heat storage mode when the temperature of the phase-change material is less than a first preset value, and stopping the determined heat storage mode when the phase-change material is completely changed from a solid state to a liquid state;
after the heat storage mode is started, whether a water flow signal exists in the water supply pipeline is detected, and if the water flow signal exists, the electric heater is started.
In some embodiments, preferably, the manner of determining the heat storage mode includes an automatic manner and a manual manner, wherein the automatic manner includes:
determining a heat storage mode according to the environment temperature of the water heater, and adopting the heat storage mode of the electric heater when the environment temperature is less than or equal to a preset value; and when the ambient temperature is greater than the preset value, adopting a combined heat storage mode.
The invention also provides a water use control method of the high-temperature heat accumulating type water heater, which comprises the following steps: when water flow is detected in the water supply line, the compressor of the heat pump assembly is stopped.
(III) advantageous effects
According to the technical scheme provided by the invention, the phase-change material is filled in the water tank, the phase-change material is heated and then is changed into a liquid state, so that heat storage is achieved, when water needs to be heated, the phase-change material releases heat and exchanges heat with a water supply pipeline, and the phase-change material is changed into a solid state from the liquid state. The phase-change material can heat water in real time, the volume of the water heater is reduced, and the phase-change material stores heat, so that the purpose of energy conservation is achieved. The water supply pipeline passes through the condensation heat exchanger, and outside the condensation heat exchanger was in the water tank, and set up electric heater on the water supply pipeline, electric heater can be phase change material heat supply alone, and electric heater can also be phase change material heat supply jointly with heat pump set's condensation scavenge air pipeline. In order to meet the application requirement of high-temperature water, the heat exchanger adopts electric heating, and different water requirements of users can be met by reasonably designing a heat pump system and an auxiliary electric heating structure and controlling. The electric heater is used for auxiliary heating, and the energy-saving effect of the heat pump water heater is exerted to the maximum extent while water consumption of a user is met through reasonable control in the water heater.
Drawings
FIG. 1 is a schematic structural view of a water heater according to an embodiment of the present invention;
fig. 2 is a flow chart of a heat storage control method of a water heater according to an embodiment of the invention.
1. A first thermometer; 2. a phase change material; 3. a condensing heat exchange pipeline; 4. a water supply line; 5. an electric heater; 6. a water replenishing switch; 7. a second thermometer; 8, a warm water valve; 9. a water flow signal detection switch; 10. a compressor; 11. an evaporator; 12. a fan; 13 an electronic expansion valve; 14 water pump.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "first", "second", "third" and "fourth" do not denote any sequence relationship, but are merely used for convenience of description. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. "Current" is the time at which an action is performed, multiple occurrences of which are recorded in real time over time.
Due to various problems in the application of the existing water heater, the invention provides a high-temperature heat accumulating type water heater and a heat accumulating control method and a water using control method thereof.
Products, methods, and the like will be described in detail below with reference to basic designs, extended designs, and alternative designs.
A high-temperature heat accumulating type water heater comprises a heat pump unit and a water tank which are arranged in a shell; a compressor 10, an evaporator 11 and a condensing heat exchanger of the heat pump unit are connected in series to form a refrigerant flowing loop; the heat pump set is outside the water tank, and the water tank intussuseption phase change material 2, supply channel 4 pass condensation heat exchanger and water tank in proper order, and outside the condensation heat exchanger is in the water tank, set up electric heater 5 on the supply channel 4 outside the water tank.
The refrigerant in the heat pump unit flows, and the refrigerant releases heat and condenses in the condensing heat exchanger under the action of the compressor 10. The heat pump unit is provided with a fan 12 at the position of an evaporator 11, so that the air flow at the position of the evaporator 11 is increased, and the flowing air exchanges heat with a refrigerant in the evaporator 11.
In which water tank no longer is loaded with a large amount of water, but the water tank is filled with a phase change material 2. The phase-change material 2 adopted in the water tank can adopt a solid-liquid conversion material, and the heat exchange between the phase-change material and the water supply pipeline 4 is met when the water heater uses water. Because water supply pipe 4 passes the water tank, water supply pipe 4 still passes the outer condensation heat exchanger of water tank, and water supply pipe 4 still sets up electric heater 5 outside the water tank, and phase change material 2 wraps up around water supply pipe 4, and phase change material 2 takes place the phase transition by the heat supply of electric heater 5, or electric heater 5 and the common heat supply of heat pump set take place the phase transition, with the heat transfer lowering temperature of water supply pipe 4. The water supply pipeline 4 is in contact with the phase change material 2 to improve the effectiveness of heat exchange and reduce energy loss.
The electric heater 5 is used as an auxiliary heating device and can be placed in one chamber of the water heater together with the heat pump unit.
More than one first thermometer 1, preferably a plurality of them in some embodiments, 3 as shown in fig. 1, are provided in the water tank to detect the temperature of the phase change material 2; the water outlet end of the water supply pipeline 4 is provided with a second thermometer 7. The temperature of the phase change material 2 is detected in real time to master the temperature value and the state of the phase change material 2 in the water tank, so that the working states of the heat pump and the electric heater 5 are effectively adjusted. Specific description will be given in the heat storage control method and the water use control method below.
Water to be heated is sent into the water tank from the water supply pipeline 4, and the water supply pipeline 4 penetrates through the water tank; in order to increase the heat exchange effect of water in the water supply pipeline 4, the water supply pipeline 4 can be increased in length in the water tank in a snake-shaped or zigzag-shaped arrangement mode and other various modes so as to improve the heat exchange water quantity and the heat exchange energy.
Meanwhile, in order to increase the heat exchange between the condensing heat exchanger and the phase change material 2, the length of the condensing heat exchanger in the water tank can be increased in various arrangement modes such as a snake shape or a zigzag shape.
In some embodiments, the water outlet end of the water supply line 4 is connected to the water inlet end of the water supply line 4 through a water mixing pipe, and the water mixing pipe is disposed outside the water tank. When the temperature of the water used by the user is lower than the temperature of the water in the water supply pipeline 4 in the water tank, the water with low temperature can be introduced through the water mixing pipe and mixed to the required temperature. Therefore, in order to freely inform the water mixing pipe, the warm water valve 8 is arranged on the water mixing pipe, and the size and the water flow of the water flow are effectively controlled. The valve body structure of the warm water valve 8 can be reasonably selected according to the size and the flow rate of the regulated water flow.
When the user uses water, the water that flows appears in the water supply pipeline 4, at this moment, need open the moisturizing switch 6 of the end of intaking of water supply pipeline 4 and carry out timely moisturizing. The water replenishment switch 6 may be activated manually or automatically, and in order to improve the safety of the operation, it is preferable to automatically activate the water replenishment. Furthermore, in some embodiments, the water replenishing switch 6 is connected to the water flow signal detection switch 9, and the water replenishing switch 6 is directly turned on according to the detection signal when the water flow is detected. In some embodiments, a water flow signal detection switch 9 may be provided on the water supply line 4.
The invention also provides a heat storage control method of the high-temperature heat storage type water heater, which comprises the following steps:
step 110, determining a heat storage mode, wherein the heat storage mode comprises: an electric heating heat storage mode and a combined heat storage mode; the combined heat storage mode of the electric heating heat storage mode and the heat pump heat storage mode can provide a rapid heat storage effect. The electric heater and the condensing heat exchanger simultaneously provide heat exchange energy in the combined heat storage mode;
in some embodiments, the mode of determining the heat storage mode may be directly selected by a user from the outside of the water heater, such as a combined heat storage mode (also referred to as a rapid heat storage mode), or may be automatically determined by the water heater through data collection. When the temperature is automatically determined, in some embodiments, the ambient temperature of the water heater is obtained firstly, the heat storage mode is determined according to the ambient temperature, and when the ambient temperature is less than or equal to a preset value, the electric heating heat storage mode is adopted; and when the ambient temperature is greater than the preset value, adopting a combined heat storage mode.
Step 120, after the heat storage mode is determined, obtaining a temperature value of the phase change material, starting the determined heat storage mode when the temperature of the phase change material is less than a first preset value, and stopping the determined heat storage mode when the phase change material is completely changed from a solid state to a liquid state; after the heat storage mode is started, whether a water flow signal exists in the water supply pipeline is detected, and if the water flow signal exists, the electric heater is started.
After the heat storage mode is determined, the heat storage mode is not started, and the heat storage mode needs to be determined according to the temperature value of the phase change material. The heat pump unit supplies heat only in the non-water phase.
The invention also provides a water use control method of the high-temperature heat accumulating type water heater, which comprises the following steps: when using water, there is rivers in the supply channel, and rivers signal detection switch transmits the controller after detecting this rivers, and the compressor is closed to the controller to when avoiding the user to use hot water, the heat pump blows off cold wind.
Next, a specific high-temperature phase change regenerative water heater is given:
as shown in fig. 1, the high-temperature phase-change heat storage type water heater includes a unit chamber (right side of the figure) and a water tank (left side of the figure) which are isolated from each other, a heat pump system including a compressor, an evaporator, a fan, a water pump 14, an electronic expansion valve 13 (throttle unit) and a condensing heat exchanger is disposed in the unit chamber, the compressor, the condensing heat exchanger and the evaporator are connected in series to form a loop, and a refrigerant flows in the loop. A fan for promoting air flow is arranged beside the evaporator. The electronic expansion valve 13 is arranged in the loop of the condensing heat exchanger and the evaporator bracket. The compressor runs, and the refrigerant flows, and the refrigerant in the condensation heat exchanger can generate heat exchange with water in the water supply pipeline, so that the water in the water supply pipeline and the phase-change material generate heat exchange.
The water supply pipeline introduces the heater from the outside of the heater and passes through the water tank, the phase-change material is arranged in the water tank, and the water in the water supply pipeline and the phase-change material are subjected to heat exchange. A plurality of temperature sensors are arranged in the water tank to detect the temperature of the phase change materials at all positions.
And a water flow signal detection switch is arranged at the water inlet of the water supply pipeline and is used for detecting whether water flow exists or not. A water mixing pipe is also arranged between the water outlet end and the water inlet end of the water supply pipeline, and a water mixing valve is arranged on the water mixing pipe. When the water mixing valve is opened, external water supply can flow to the water mixing pipe and the water supply pipeline, and the external water supply can be controlled through the water supplementing switch.
Next, a heat storage control method of the water heater is given, as shown in fig. 2:
acquiring a starting signal, starting, comparing the ambient temperature of the water heater, entering a combined heat storage mode when the ambient temperature is greater than a preset value Th, extracting temperature values T1, T2 and T3 of phase change materials at each position in the water tank, starting a fan and a compressor when Max (T1, T2 and T3) is lower than a first preset value Tsta ℃, starting a water pump 14, and simultaneously detecting a water flow signal by a water flow signal detection switch Kx 1; and when the Kx detects a water flow signal, the electric heater is started to store heat by the phase-change material. The first temperature sensor obtains temperature values T1, T2 and T3 of the phase-change materials at each position in the water tank in real time, and the phase-change state of the phase-change materials is judged through the detected temperature. When Min (T1, T2 and T3) > is higher than a second preset value Ttop ℃, the phase-change material is completely changed from a solid state to a liquid state, the unit is stopped, and the electric heater is stopped.
When the environmental temperature is lower than a preset value Th, entering an electric heater heat storage mode, extracting temperature values T1, T2 and T3 of phase change materials at each position in the water tank, and when Max (T1, T2 and T3) is lower than a first preset value Tsta ℃, starting the water pump 14 and simultaneously detecting a water flow signal by a water flow signal detection switch Kx 1; and when the Kx detects a water flow signal, the electric heater is started to store heat by the phase-change material. The first temperature sensor (such as a temperature sensing bulb) obtains temperature values T1, T2 and T3 of the phase change material at each position in the water tank in real time, and the phase change state of the phase change material is judged according to the detected temperature. When Min (T1, T2 and T3) > is higher than the second preset value Ttop ℃, the phase-change material is completely changed from a solid state to a liquid state, and the electric heater is stopped.
Tsta is the heat pump startup temperature and Tstop is the heat pump shutdown temperature.
The water consumption control method of the water heater is given as follows:
the water flow signal detection switch Kx detects water flow at any time, i.e., when the user uses water. Even if the unit detects a starting signal and meets the starting condition, the compressor stops. And cold air blown out by the heat pump is avoided when the user uses hot water.
At the moment, the opening degree of the warm water valve K1 is adjusted, and meanwhile, the temperature sensing bulb T4 detects the temperature of the water using opening of the user, so that the temperature of the water outlet is maintained at the outlet water temperature set by the user.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A high-temperature heat accumulating type water heater is characterized by comprising a heat pump unit and a water tank which are arranged in a shell; the compressor, the evaporator and the condensing heat exchanger of the heat pump unit are connected in series to form a refrigerant flowing loop; the heat pump unit is positioned outside the water tank; the water tank is filled with phase-change materials, a water supply pipeline sequentially penetrates through the condensation heat exchanger and the water tank, the condensation heat exchanger is positioned outside the water tank, and an electric heater is arranged on the water supply pipeline outside the water tank.
2. A high temperature type heat accumulating water heater as claimed in claim 1, wherein the water outlet end of the water supply pipeline is connected with the water inlet end of the water supply pipeline through a water mixing pipe, and the water mixing pipe is arranged outside the water tank.
3. A high temperature type heat accumulating water heater as claimed in claim 2, wherein a warm water valve is provided on the water mixing pipe.
4. A high temperature type regenerative water heater as claimed in claim 1, wherein a water replenishing switch is provided at the water inlet end of said water supply line.
5. A high temperature type regenerative water heater as set forth in claim 1, wherein a water flow signal detecting switch is provided on said water supply line.
6. A high temperature type regenerative water heater according to any of claims 1 to 5, wherein more than one first thermometer is provided in the water tank to detect the temperature of the phase change material; and a second thermometer is arranged at the water outlet end of the water supply pipeline.
7. A high temperature type regenerative water heater according to any of claims 1 to 5, wherein the water supply line is in contact with the phase change material.
8. A heat storage control method for a high temperature heat storage type water heater as claimed in any one of claims 1 to 7, comprising:
determining a heat storage mode, the heat storage mode including: an electric heating heat storage mode and a combined heat storage mode; the electric heater and the condensing heat exchanger simultaneously provide heat exchange energy in the combined heat storage mode;
after the heat storage mode is determined, acquiring a temperature value of the phase-change material, starting the determined heat storage mode when the temperature of the phase-change material is less than a first preset value, and stopping the determined heat storage mode when the phase-change material is completely changed from a solid state to a liquid state;
after the heat storage mode is started, whether a water flow signal exists in the water supply pipeline is detected, and if the water flow signal exists, the electric heater is started.
9. A heat storage control method for a high temperature, regenerative water heater as set forth in claim 8 wherein said means for determining the heat storage mode includes an automatic means and a manual means, wherein said automatic means includes:
determining a heat storage mode according to the environment temperature of the water heater, and adopting the heat storage mode of the electric heater when the environment temperature is less than or equal to a preset value; and when the ambient temperature is greater than the preset value, adopting a combined heat storage mode.
10. A water use control method for a high temperature heat storage type water heater as claimed in any one of claims 1 to 7, comprising:
when water flow is detected in the water supply line, the compressor of the heat pump assembly is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376233.6A CN111197863A (en) | 2018-11-19 | 2018-11-19 | High-temperature heat accumulating type water heater and heat accumulation control method and water using control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811376233.6A CN111197863A (en) | 2018-11-19 | 2018-11-19 | High-temperature heat accumulating type water heater and heat accumulation control method and water using control method thereof |
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| CN111197863A true CN111197863A (en) | 2020-05-26 |
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| CN201811376233.6A Pending CN111197863A (en) | 2018-11-19 | 2018-11-19 | High-temperature heat accumulating type water heater and heat accumulation control method and water using control method thereof |
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| CN105980778A (en) * | 2014-03-18 | 2016-09-28 | 松下知识产权经营株式会社 | Heat storage device and hot water generation device provided with same |
| EP2934272B1 (en) * | 2012-12-20 | 2017-02-22 | Electrolux Home Products Corporation N.V. | Household appliance and method of operating a household appliance |
| CN107355841A (en) * | 2017-06-13 | 2017-11-17 | 上海交通大学 | A kind of electrically driven (operated) air source heat pump multi-mode heating system of low ebb |
| CN107741070A (en) * | 2017-10-18 | 2018-02-27 | 上海交通大学 | A kind of air source hot pump water heater high density heat accumulation all-in-one |
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- 2018-11-19 CN CN201811376233.6A patent/CN111197863A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563812A (en) * | 2004-03-12 | 2005-01-12 | 华南理工大学 | Critical heat accumulating heat pump water heater |
| CN201181093Y (en) * | 2008-03-07 | 2009-01-14 | 南京师范大学 | Heat collection/energy accumulation/evaporation integrated heat pump water heater |
| CN201265954Y (en) * | 2008-08-08 | 2009-07-01 | 肖成钢 | Phase-change heat accumulation instant heating type hot-water pumping apparatus |
| EP2934272B1 (en) * | 2012-12-20 | 2017-02-22 | Electrolux Home Products Corporation N.V. | Household appliance and method of operating a household appliance |
| CN105980778A (en) * | 2014-03-18 | 2016-09-28 | 松下知识产权经营株式会社 | Heat storage device and hot water generation device provided with same |
| CN107355841A (en) * | 2017-06-13 | 2017-11-17 | 上海交通大学 | A kind of electrically driven (operated) air source heat pump multi-mode heating system of low ebb |
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