CN109381143B - Heat pump type dishwasher and control method - Google Patents
Heat pump type dishwasher and control method Download PDFInfo
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- CN109381143B CN109381143B CN201710684753.2A CN201710684753A CN109381143B CN 109381143 B CN109381143 B CN 109381143B CN 201710684753 A CN201710684753 A CN 201710684753A CN 109381143 B CN109381143 B CN 109381143B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/16—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with rigidly-mounted spraying devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4229—Water softening arrangements
- A47L15/4231—Constructional details of the salt container or the ion exchanger
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4285—Water-heater arrangements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/06—Water heaters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/18—Water softening devices
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
本发明公开了一种热泵式洗碗机及控制方法，洗碗机包括处理室和用于加热洗涤水的热泵系统，所述洗碗机还包括用于对洗涤水进行软化处理的软化装置；所述热泵系统包括蒸发器，所述储能装置内盛有储能介质，所述蒸发器与储能介质接触吸收所述储能介质的热量；所述软化装置与储能装置连接，所述储能介质包含有可置换软化装置内离子的置换离子，储能介质能够进入软化装置对软化装置进行净化。发明采用吸收储能装置中的热量的热泵加热系统，取消了风机，噪音更低；利用软化装置对洗涤水进行软化，提高了洗碗机的洗涤效果，同时利用储能介质对软化装置进行清洗，使软化装置能够持续保持高效的软化性能。
The invention discloses a heat pump type dishwasher and a control method. The dishwasher includes a treatment chamber and a heat pump system for heating washing water, and the dishwasher further includes a softening device for softening the washing water; The heat pump system includes an evaporator, the energy storage device contains an energy storage medium, the evaporator contacts the energy storage medium to absorb the heat of the energy storage medium; the softening device is connected to the energy storage device, and the The energy storage medium contains replacement ions that can replace the ions in the softening device, and the energy storage medium can enter the softening device to purify the softening device. The invention adopts the heat pump heating system that absorbs the heat in the energy storage device, cancels the fan, and has lower noise; the softening device is used to soften the washing water, which improves the washing effect of the dishwasher, and the energy storage medium is used to clean the softening device. , so that the softening device can continue to maintain efficient softening performance.
Description
Technical Field
The invention belongs to the field of kitchen equipment, and particularly relates to a heat pump type dish washing machine and a control method.
Background
The dish washer is used for automatically cleaning tableware such as dish, chopsticks, dish, knife and fork, and can be divided into two types of box type and conveying type according to the structure. It reduces the labor intensity for the cooking personnel in dining room, hotel and dining room of office, improves the working efficiency and promotes the cleanness and sanitation. At present, various small dishwashers are on the market, and are gradually entering ordinary households.
The existing dish washer uses a heating pipe to supply water to the dish washer, the heating pipe is arranged in a water tank at the bottom of an inner container, and when in washing, the heating pipe is used for heating, and circulating water of a circulating pump is used for washing dishes. However, this method consumes much power and does not dry thoroughly.
In order to solve the problems, some dish washing machines adopting other heating modes exist at present, for example, the Chinese utility model patent with the application number of 201420465616.1 and the name of heat pump type dish washing machine provides a heat pump type dish washing machine, which comprises an inner container, a compressor, a condenser, a throttling device and an evaporator, wherein the condenser is arranged close to the outer wall of the inner container; the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the evaporator through the throttling device, and the outlet of the evaporator is connected with the inlet of the compressor. The utility model discloses an energy resource consumption when saving the washing, the heat pump system that mainly comprises compressor, condenser, throttling arrangement and evaporimeter imbeds in the dish washer adopts copper pipe or aluminum pipe as heat pump system's condenser, closely pastes or twines the setting at the inner bag outer wall. The utility model discloses a having changed the mode that current dish washer adopted the heating pipe heating, having used heat pump system to the dish washer field, opened a brand-new heating and drying mode, very big reduction the consumption of the energy, and have better user experience.
However, the above patents have the following disadvantages: although the problem that heating pipes are large in heating power consumption is solved to a certain extent in the dish-washing machine disclosed by the patent, the heat pump system can affect the temperature of the surrounding environment during working, particularly, the heat pump system is often provided with a fan for better absorbing heat of an evaporator, and therefore the noise is extremely high in the heat pump operation. And when the external environment temperature is too low, the working efficiency of the heat pump is greatly reduced, so that the heating speed is influenced. In addition, the washing water of the dishwasher generally contains a large amount of calcium and magnesium ions, which not only affects the washing effect of the dishwasher, but also can generate scale on a heating device after long-term use, which affects the heating efficiency.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a heat pump type dish washing machine and a control method, wherein a fan is omitted by utilizing a heat pump heating system for absorbing heat in an energy storage device, and the noise is lower; utilize softening installation to soften the washing water, improved dish washer's washing effect, utilize the energy storage medium to wash softening installation simultaneously, make softening installation can continuously keep efficient softening performance.
In order to realize the purpose, the invention adopts the following technical scheme:
a heat pump type dish washing machine comprises a treatment chamber and a heat pump system for heating washing water, wherein a spraying opening is formed in the treatment chamber, and the spraying opening sprays the washing water provided by a washing water waterway to clean tableware in the treatment chamber; characterized in that the dishwasher further comprises a softening device for softening the washing water; the heat pump system comprises an evaporator, an energy storage medium is contained in an energy storage device, and the evaporator is in contact with the energy storage medium to absorb heat of the energy storage medium; the softening device is connected with the energy storage device, the energy storage medium contains replaceable ions capable of replacing ions in the softening device, and the energy storage medium can enter the softening device to purify the softening device.
Furthermore, the softening device is provided with a water inlet, the energy storage device is provided with a liquid outlet, the liquid outlet of the energy storage device is communicated with the water inlet through a first pipeline, the energy storage medium enters the softening device through the first pipeline, and the first pipeline is provided with a first control valve for controlling the on-off of the pipeline.
Furthermore, energy memory still includes the inlet, the inlet passes through second pipeline and washing water route intercommunication, and washing water passes through in the second pipeline enters into energy memory, be provided with the second control valve who is used for controlling this pipeline break-make on the second pipeline.
Furthermore, the softening device is also provided with a water outlet, the water inlet of the softening device is also communicated with a washing water path through a third pipeline, and washing water enters the softening device through the third pipeline and is discharged through the water outlet; and a third control valve for controlling the on-off of the pipeline is arranged on the third pipeline.
Further, the third control valve and the first control valve are located at positions in parallel on the wash water circuit, or the third control valve is located at a position upstream of the first control valve on the wash water circuit.
Further, the energy storage medium is a liquid.
Further, the liquid inlet in the energy storage device is positioned at the upper part of the liquid outlet;
the energy storage device is also provided with an adding port, and the adding port is used for adding an energy storage medium.
A method of controlling a heat pump dishwasher, the method comprising controlling the introduction of the energy storage medium into a softening unit by controlling the connection of the energy storage unit and the softening unit.
Further, the energy storage medium is a liquid; introducing the washing water into the energy storage device by controlling the connection relationship between the washing water waterway and the energy storage device; and meanwhile, by controlling the connection relationship between the energy storage device and the softening device, the energy storage medium extruded from the energy storage device flows into the softening device from the energy storage device, so that the softening device is purified.
Further, the control method further comprises an energy storage medium adding step, wherein in the energy storage medium adding step, after the energy storage medium flows into the softening device from the energy storage device, the energy storage medium is added to the energy storage device so as to meet the normal working requirement of the heat pump.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
According to the heat pump type dish washing machine and the control method, the heat pump heating system is adopted, and the energy consumption for heating washing water is reduced because the energy efficiency ratio of the heat pump system is high; and the heat pump is adopted to absorb heat in the energy storage device, compared with the common heat pump which absorbs heat in the air, the use of a fan is cancelled, and the noise is lower when the heat pump operates. Meanwhile, aiming at the condition that the heating efficiency of the heat pump is reduced when the external environment temperature is too low, the invention also realizes rapid heating in a direct electric heating mode, so that the dish-washing machine can efficiently heat washing water under different environment conditions.
In the invention, the evaporator is fully contacted with the energy storage medium in the energy storage device to realize the heat absorption of the evaporator. Because the energy storage medium of liquid that adopts among the energy memory, consequently can carry out more even heat transfer with the evaporimeter, further, in the technical scheme who adopts salt solution as energy storage medium, because salt solution and the heat conduction speed of evaporimeter are higher than the heat conduction speed of air and evaporimeter far away, consequently can promote heat pump heating device to the rate of heating of washing water by a wide margin, satisfy the technical requirement of user's rapid heating.
According to the invention, the functional ions in the softening device are exchanged with calcium and magnesium ions in water, so that redundant calcium and magnesium ions in water are adsorbed, the aim of removing calcium carbonate or magnesium carbonate is achieved, and the washing effect is enhanced. Meanwhile, the characteristic that the energy storage medium is saline water is skillfully utilized, the characteristic that calcium and magnesium ions can be replaced by the saline water is utilized, and the communication between the softening device and the energy storage medium is realized by utilizing a control valve and a pipeline. After the energy storage medium, namely the brine is introduced into the softening device, the brine displaces calcium and magnesium ions adsorbed in the softening device and flows out of the softening device along with the brine, so that the aim of washing the softening device is fulfilled, and the softening device recovers the adsorption capacity of the calcium and magnesium ions.
Meanwhile, the invention realizes the heating of the washing water of the dish washer by combining a direct electric heating mode and a heat pump heating mode. The heating efficiency is greatly influenced by the external environment when the heat pump heating system is used for heating washing, and meanwhile, a richer heating control means is provided for users. The system selects different heating modes according to different external environmental conditions, realizes the high speed and high efficiency of heating the washing water of the dish-washing machine, reduces the waiting time for a user to use hot water, has good energy-saving effect and improves the user experience.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a water circuit and structure of a heat pump dishwasher according to the present invention;
FIG. 2 is a schematic diagram of a water circuit and a structure of a heat pump dishwasher according to the present invention during normal washing.
In the figure: 1. a water inlet valve; 2. a respirator; 3. draining pump; 4. a circulation pump; 5. a throttling element; 6. an evaporator; 7. an energy storage device; 8. a compressor; 9. a condenser; 10. an electric heater; 11. a spray port; 12. a washing water path; 13. an energy storage medium; 14. a softening device; 15. a water inlet; 16. a water outlet; 17. a liquid inlet; 18. a second pipeline; 19. a liquid outlet; 20. a first pipeline; 21. a second control valve; 22. a first control valve; 23. a third pipeline; 24. a third control valve.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present 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; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 2, the present invention discloses a heat pump type dishwasher and a control method thereof, the dishwasher including a treatment chamber and a heat pump system for heating washing water, the dishwasher further including a softening device 14 for softening the washing water; the heat pump system comprises an evaporator 6, an energy storage medium 13 is contained in the energy storage device 7, and the evaporator 6 is in contact with the energy storage medium 13 to absorb heat of the energy storage medium 13; the softening device 14 is connected with the energy storage device 7, the energy storage medium 13 contains replacement ions capable of replacing the ions in the softening device 14, and the energy storage medium 13 can enter the softening device 14 to purify the softening device 14. The invention adopts the heat pump heating system for absorbing the heat in the energy storage device, a fan is omitted, and the noise is lower; utilize softening installation to soften the washing water, improved dish washer's washing effect, utilize the energy storage medium to purify softening installation simultaneously, make softening installation can continuously keep efficient softening performance.
Example 1
As shown in fig. 1 and 2, the present embodiment discloses a heat pump dishwasher including a process chamber; the treatment chamber is internally provided with a spray opening 11, and the spray opening 11 sprays and cleans the tableware in the treatment chamber through the washing water provided by a washing water waterway 12. The washing water waterway 12 is connected with a water inlet valve 1, a respirator 2, a drainage pump 3, a circulating pump 4 and a spraying port 11. The washing water enters the washing water waterway 12 through the water inlet valve 1, flows into the treatment chamber with the tableware, circularly flows in the washing water waterway 12 through the circulating pump 4, is sprayed on the tableware through the spraying port 11 to clean the tableware, discharges dirty water through the drainage pump 3 after the cleaning is finished, and the respirator 2 is used for preventing siphoning of the washing water waterway 12.
The invention heats the washing water through the heating system in order to improve the cleaning effect of the dish-washing machine. The heating system comprises a heat pump system. As shown in fig. 1 and 2, the heat pump system comprises a heat pump working medium circuit connected with each other: throttling element 5, evaporator 6, compressor 8, condenser 9. The working principle of the heat pump system is that energy transfer is realized through conversion of a gas-liquid state of a working medium of the heat pump, specifically, high-pressure refrigerant steam discharged by a compressor 8 flows into a condenser 9, the refrigerant steam is condensed to release latent heat, the condensed liquid refrigerant flows through a throttling element 5 to enter an evaporator 6, the evaporator 6 absorbs external heat to evaporate, and the evaporated steam is sucked by the compressor to complete a heating cycle.
The present invention heats the washing water by using the latent heat released from the condenser 9. The condenser 9 of the present invention is a double pipe heat exchanger including an inner pipe and an outer pipe, the inner pipe is communicated with a washing water path 12, and the outer pipe is communicated with a heat pump working medium. When the washing water flows through the inner tube of the double pipe heat exchanger, the heat pump working medium in the pipe of the condenser 9 releases latent heat, heating the washing water in the inner tube. The circulating pump 4 on the washing water waterway 12 drives the washing water to flow in the washing water waterway 12, thereby realizing the heating of the washing water in the dishwasher.
In order to reduce noise generated during operation of the heat pump and improve the heat exchange speed of the heat pump, the heat pump system further comprises an energy storage device 7, an energy storage medium 13 is contained in the energy storage device 7, and the evaporator 6 is in contact with the energy storage medium 13 to absorb heat of the energy storage medium 13. In the invention, the evaporator 6 directly absorbs the heat of the energy storage medium 13, and the energy storage medium 13 exchanges heat with the external environment to absorb the heat of the external environment.
As shown in the figure, the energy storage device 7 of the present invention has a chamber therein, the energy storage medium 13 is disposed in the chamber, and the evaporator 6 is disposed in the chamber and is in contact with the energy storage medium 13 to realize heat exchange. In order to improve the heat exchange efficiency of the evaporator 6, the energy storage medium 13 is liquid, and the freezing point of the energy storage medium is lower than that of the washing water, so that the evaporator can still absorb heat from the liquid energy storage medium 13 under the condition of low temperature, and the heat pump can normally operate. It is further preferable that the energy storage medium 13 in this embodiment is brine, because the freezing point of brine is much lower than that of water, and the materials are easily available, which does not cause environmental pollution.
The heat pump system of the present invention further includes a heating device, which is located on the washing water waterway 12, and assists or is independent of the heat pump system to heat the washing water.
In this embodiment, the heating device is an electric heater 10 composed of an electric heating tube. The electric heater 10 is positioned on the washing water circuit between the water outlet of the circulating pump 4 and the spraying port 11. The electric heater 10 may cooperate with a heat pump system to heat the washing water in the washing water circuit 12.
The electric heater 10 can also be used for heating the washing water independently, and particularly when the external environment temperature is lower than the freezing point of the energy storage medium 13 and the energy storage medium 13 is frozen to cause the heat pump system to be incapable of working normally, the electric heater 10 is started to heat the washing water in the washing water waterway 12, so that the purpose of heating the washing water is achieved.
The electric heater 10 in this embodiment may be located outside the washing water path, and may heat the washing water indirectly by heating the washing water path, or may heat the washing water by directly heating the washing water.
In other embodiments, the electric heater 10 may also be a heating device using other means, such as gas heating, and the disposition and control method thereof are the same as those of the present embodiment, and will not be described herein again.
As shown in fig. 1 and 2, the heat pump dishwasher of the present invention is further provided with a softening device 14 for softening the washing water. The softening device 14 is connected with the energy storage device 7, the energy storage medium 13 contains replacement ions capable of replacing ions in the softening device, and the energy storage medium 13 can enter the softening device 14 to purify the softening device 14.
As shown, the softening device 14 is provided with a water inlet 15 and a water outlet 16. The softening device 14 is provided with a softening core made of resin having functional ions capable of exchanging calcium and magnesium ions. When running water enters the dish washing machine, the running water flows into the softening device 14 through the water inlet 15, functional ions on resin in the softening device 14 exchange with calcium ions and magnesium ions in water, so that redundant calcium ions and magnesium ions in the water are adsorbed, the aim of removing calcium carbonate or magnesium carbonate is fulfilled, softened washing water flows out through the water outlet 16 and is used for washing tableware, and the washing effect is enhanced.
In order to achieve the above-mentioned object of cleaning the softening device 14 by means of the energy storage medium 13, the invention envisages a special line for this cleaning function. The energy storage device 7 is provided with a liquid outlet 19, the liquid outlet 19 of the energy storage device 7 is communicated with the water inlet 15 of the softening device 14 through a first pipeline 20, the energy storage medium 13 enters the softening device 14 through the first pipeline 20, and the first pipeline 20 is provided with a first control valve 22 for controlling the on-off of the pipeline.
Meanwhile, the energy storage device 7 is further provided with a liquid inlet 17, the liquid inlet 17 is communicated with a washing water waterway 12 through a second pipeline 18, the washing water enters the energy storage device 7 through the second pipeline 18, and a second control valve 21 for controlling the on-off of the second pipeline 18 is arranged on the second pipeline 18.
As shown, the water inlet 15 of the softening device 14 is also communicated with the washing water waterway 12 through a third pipeline 23, and the washing water enters the softening device 14 through the third pipeline 23 and is discharged through the water outlet 16; the third pipeline 23 is provided with a third control valve 24 for controlling the on-off of the pipeline.
As shown in fig. 2, when the third control valve 24 is opened and the first control valve 22 and the second control valve 21 are closed. At this time, the third line 23 is open, and the first line 20 and the second line 18 are closed. At this time, as shown in fig. 2, the washing water flows in from the feed valve 1, passes through the third control valve 24, and enters the third pipe 23. The washing water enters the softening device 14 through the water inlet 15 of the softening device 14, and after the softening action with the softening core in the softening device 14 is completed, the softened washing water is discharged from the water outlet 16 for washing the dishes in the dishwasher.
Correspondingly, when the third control valve 24 is closed and the first control valve 22 and the second control valve 21 are opened, the third pipeline 23 is closed and the first pipeline 20 and the second pipeline 18 are communicated. At this time, the washing water flows in the direction shown in fig. 1, and the washing water flowing in from the feed valve 1 passes through the second control valve 21 and enters the second pipe 18. The washing water enters the energy storage device 7 through the second pipeline 18 through the liquid inlet 17.
Since the volume of the energy storage device 7 is constant, and as shown in the figure, the liquid inlet 17 is located at the upper part of the liquid outlet 19 in the energy storage device 7. Therefore, when the washing water enters the energy storage device 7 from the upper liquid inlet 17, the original energy storage medium 13 in the energy storage device 7 is extruded from the lower liquid outlet 19 of the energy storage device 7 and enters the first pipeline 20. The liquid mixed with the energy storage medium 13 enters the softening device 14 through the water inlet 15 of the softening device 14 through the first control valve 22, and is discharged through the water outlet 16 after completing the replacement function for the softening core in the softening device 14, thereby completing the purification of the softening device 14. The advantage of the embodiment of the energy storage device 7 in which the inlet 17 is located above the outlet 19 is that it facilitates the complete discharge of the energy storage medium.
In order to accomplish the above-mentioned waterway control process, as shown in fig. 1 and 2, the third control valve 24 is located in parallel with the first control valve 22 on the washing water waterway 12, or the third control valve 24 is located at an upstream position of the first control valve 22 on the washing water waterway 12.
In this embodiment, the energy storage medium not only has a necessary energy storage function, but also has a function of cleaning the softening device, and therefore, in this embodiment, brine is used as the energy storage medium. The brine has the advantages that the freezing point of the brine is lower than that of the washing water, the evaporator can still absorb heat from the liquid energy storage medium 13 under the condition of lower temperature, the heat pump can normally operate, the materials are easy to obtain, no environmental pollution is caused, and the like, and the brine can well play a role in purifying the softening device.
As described above, the softening core in the softening device of the present invention is made of resin capable of exchanging calcium and magnesium ions, and the principle thereof is to convert the soluble calcium and magnesium ions in water into insoluble substances and adsorb the insoluble substances on the softening core, thereby reducing the content of calcium and magnesium ions in water and achieving the purpose of softening water. However, when the softening device is used for a long time, the softening water function of the softening device is reduced or lost because the surface of the softening core is covered by insoluble calcium and magnesium compounds.
And the sodium ions in the energy storage medium, namely the brine can quickly replace calcium and magnesium ions, the calcium and magnesium ions are replaced from the softening core of the softening device 14 to form soluble solution, and the solution is washed out of the softening device through running water, so that the softening device can recover the softening function. Thus, the present invention utilizes the characteristics of brine and the characteristics of existing energy storage devices and energy storage media to perform the cleaning of the softener using an energy storage medium made of brine. Not only simple structure, the control process is easily operated, but also does not need to additionally purchase cleaning liquid and dismantle the softening device, and conveniently and effectively solves the purification problem of the softening device.
Of course, it can be seen from the present embodiment that after the dishwasher performs the washing of the softening device, the concentration of the energy storage medium is reduced, which affects the operation efficiency of the heat pump. Therefore, in order to ensure that the energy storage device has effective energy storage capacity, the energy storage device is further provided with an adding port, and the adding port is used for adding an energy storage medium, so that the energy storage medium is ensured to meet the requirement of normal work of the heat pump.
Example 2
This embodiment is a further explanation of the control method for controlling the dishwasher in embodiment 1. The control method of the embodiment controls the energy storage medium 13 to enter the softening device by controlling the connection relationship between the energy storage device 7 and the softening device 14.
Specifically, in the present embodiment, the washing water is introduced into the energy storage device 7 by controlling the connection relationship between the washing water path 12 and the energy storage device 7; meanwhile, by controlling the connection relationship between the energy storage device 7 and the softening device 14, the extruded energy storage medium 13 flows into the softening device 14 from the energy storage device 7, and the softening device 14 is purified.
As shown in fig. 2, the method opens the third control valve 24, closes the first control valve 22 and the second control valve 21, and opens the third pipeline 23, and closes the first pipeline 20 and the second pipeline 18. At this time, as shown in fig. 2, the washing water flows in from the feed valve 1, passes through the third control valve 24, and enters the third pipe 23. The washing water enters the softening device 14 through the water inlet 15 of the softening device 14, and after the softening action with the softening core in the softening device 14 is completed, the softened washing water is discharged from the water outlet 16 for washing the dishes in the dishwasher.
Correspondingly, the third control valve 24 is controlled to be closed, and the first control valve 22 and the second control valve 21 are controlled to be opened, so that the third pipeline 23 is closed, and the first pipeline 20 and the second pipeline 18 are conducted. At this time, the washing water flows in the direction shown in fig. 1, and the washing water flowing in from the feed valve 1 passes through the second control valve 21 and enters the second pipe 18. The washing water enters the energy storage device 7 through the second pipeline 18 through the liquid inlet 17.
When the washing water enters the energy storage device 7 from the upper liquid inlet 17, the original energy storage medium in the washing water is extruded from the lower liquid outlet 19 of the energy storage device 7 and enters the first pipeline 20. The liquid mixed with the energy storage medium 13 enters the softening device 14 through the water inlet 15 of the softening device 14 through the first control valve 22, and is discharged through the water outlet 16 after completing the displacement action with the softening core in the softening device 14, thereby completing the purification of the softening device 14.
The control method further comprises an energy storage medium adding step, wherein the energy storage medium adding step is to add the energy storage medium to the energy storage device after the energy storage medium flows into the softening device from the energy storage device so as to meet the normal working requirement of the heat pump.
Example 3
The present embodiment is a supplement to the control method of the above embodiment, and in the present embodiment, the heat pump type dishwasher starts heating washing, and automatically selects to use the heat pump system and/or the electric heater to heat the washing water path.
In order to realize the technical scheme of the automatic selection heating system of the heat pump type dishwasher with automatic control, the heat pump type dishwasher comprises a temperature detection device for detecting the ambient temperature. And the heat pump type dish washing machine automatically selects and uses the heat pump system and/or the electric heater to heat the washing water channel according to the comparison result of the ambient temperature detected by the temperature detection device and the temperature of the energy storage medium in the energy storage device.
Specifically, it can be seen from the above examples that the freezing point temperature of the energy storage medium in the present invention is lower than the freezing point temperature of the washing water. When the ambient temperature is higher than the freezing point temperature of the washing water, the energy storage medium and the washing water are both in liquid state, the heat pump can work normally, the evaporator absorbs heat from the energy storage medium in the energy storage device, and the condenser heats the washing water. The heat pump heating mode has high heat exchange efficiency and is a heating scheme which is preferentially used, so that the control device of the dishwasher automatically adopts the heat pump system to heat the washing water at the moment.
Of course, in order to accelerate the temperature rise of the washing water, the electric heater can be simultaneously turned on at the same time, so that the heat pump system and the electric heater simultaneously heat the washing water channel, and the temperature of the washing water is rapidly raised.
In this embodiment, when the ambient temperature is higher than the freezing point temperature of the energy storage medium and lower than the freezing point temperature of the washing water, the ambient temperature is already low, and the heat pump can work at this time, but the work efficiency is significantly reduced, and the washing water is likely to be solidified at any time, so the washing water is scrambled by controlling the method of heating the washing water waterway by using the heat pump system and the electric heater at the same time, or the washing water waterway is heated by simply using the electric heater.
Further, when the ambient temperature further drops and is lower than the freezing point temperature of the energy storage medium, the heat pump system cannot normally work due to the fact that the energy storage medium and the washing water are solidified, and the dishwasher adopts a method for controlling the washing water waterway to be heated by only using the electric heater to meet the requirement of heating the washing water of the dishwasher.
The dishwasher in the embodiment automatically selects different washing water heating modes according to the change of the ambient temperature, so as to improve the heating efficiency of the dishwasher.
Example 4
The present embodiment is different from embodiment 3 in that the different heating modes in the present embodiment are realized according to control instructions. In this embodiment, the heating control program for the dishwasher has three different heating modes, which are: heat pump heating mode, electric heating mode, instant heating mode.
The heat pump heating mode is that the heat pump heating system is used for heating the washing water; the electric heating mode is that the washing water is heated by only using an electric heater; the quick heating mode is to heat the washing water by simultaneously starting the heat pump heating system and the electric heater. The user selects the three different heating modes to heat the washing water in the dishwasher through own selection.
Of course, an alarm device is further provided to ensure the system security in this embodiment. When the external environment does not meet the starting requirement of the heat pump, the warning device reminds the user of the current environment state, so that the user can conveniently select a specific heating mode.
Example 5
This embodiment is complementary to the electric heater of the above-described embodiment.
The electric heater in this embodiment does not simply heat the washing water, but heats the energy storage medium while heating the washing water, so as to raise the temperature of the energy storage medium.
In the embodiment, the temperature difference between the evaporator and the energy storage medium in the heat pump system is improved by fully utilizing the redundant heat of the electric heater and utilizing the method of heating the energy storage medium by the electric heater, so that the working efficiency of heat absorption of the evaporator is improved, and the heating of the washing water reaches the optimal balance in the adjustment of electric heating and heat pump system heating.
Example 6
This example is complementary to example 5.
In this embodiment, the dishwasher is provided with a controller inside, and temperature detection devices are respectively placed in the energy storage medium, the washing water and the external environment, and are electrically connected with the controller, and the controller receives the temperature information detected by the temperature detection devices.
The electric heating device comprises a first electric heating device which is arranged on the energy storage device and used for heating the energy storage medium; and a second electric heating device arranged on the washing water circuit and used for heating the washing water. The first and second electric heating means may be adjustable by the controller.
The controller controls and adjusts the power of the first electric heating device and the power of the second electric heating device according to the mutual relation of the electric quantity consumed by the first electric heating device, the electric quantity consumed by the operation of the heat pump system and the electric quantity consumed by the second electric heating device and the temperature information detected by the temperature detection device. Therefore, the mutual relation between the heat pump heating system and the electric heater is comprehensively coordinated, the washing water can be rapidly heated, the reasonable distribution of the electric quantity under different external environment temperature conditions can be met, and the purposes of high efficiency and energy conservation are achieved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A heat pump type dish washing machine comprises a treatment chamber and a heat pump system for heating washing water, wherein a spraying opening is formed in the treatment chamber, and the spraying opening sprays the washing water provided by a washing water waterway to clean tableware in the treatment chamber; characterized in that the dishwasher further comprises a softening device for softening the washing water; the heat pump system comprises an evaporator, an energy storage medium is contained in an energy storage device, and the evaporator is in contact with the energy storage medium to absorb heat of the energy storage medium; the softening device is connected with the energy storage device, the energy storage medium contains replaceable ions capable of replacing ions in the softening device, and the energy storage medium can enter the softening device to purify the softening device.
2. A heat pump dishwasher according to claim 1, wherein the softening device is provided with a water inlet, the energy storage device is provided with a liquid outlet, the energy storage device liquid outlet is connected to the water inlet via a first pipeline, the energy storage medium enters the softening device via the first pipeline, and the first pipeline is provided with a first control valve for controlling the on/off of the pipeline.
3. A heat pump dishwasher according to claim 2, wherein the energy storage device further comprises a liquid inlet, the liquid inlet is communicated with the washing water path via a second pipeline, the washing water enters the energy storage device via the second pipeline, and a second control valve is disposed on the second pipeline for controlling on/off of the second pipeline.
4. A heat pump dishwasher according to claim 3, wherein the softening device is further provided with a water outlet, the water inlet of the softening device being further in communication with the washing water circuit via a third line, the washing water entering the softening device via the third line and being discharged via the water outlet; and a third control valve for controlling the on-off of the pipeline is arranged on the third pipeline.
5. A heat pump dishwasher according to claim 4, wherein the third control valve is located at a position in parallel to the first control valve on the wash water circuit or at a position upstream of the first control valve on the wash water circuit.
6. A heat pump dishwasher according to claim 1, wherein the energy storage medium is a liquid.
7. A heat pump dishwasher according to claim 3, wherein the inlet port is located at an upper portion of the outlet port in the energy storage device;
the energy storage device is also provided with an adding port, and the adding port is used for adding an energy storage medium.
8. A method of controlling a heat pump dishwasher according to any one of claims 1 to 7, comprising controlling the inlet of the energy storage medium into the softening unit by controlling the connection of the energy storage unit to the softening unit.
9. The control method according to claim 8, characterized in that the energy storage medium is a liquid; introducing the washing water into the energy storage device by controlling the connection relationship between the washing water waterway and the energy storage device; and meanwhile, by controlling the connection relationship between the energy storage device and the softening device, the energy storage medium extruded from the energy storage device flows into the softening device from the energy storage device, so that the softening device is purified.
10. The control method according to claim 9, characterized by further comprising an energy storage medium adding step, wherein after the energy storage medium flows into the softening device from the energy storage device, the energy storage medium is added to the energy storage device so as to meet the normal operation requirement of the heat pump.
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| CN111436878B (en) * | 2020-03-31 | 2023-07-25 | 宁波方太厨具有限公司 | Cleaning machine and cleaning method |
| WO2024041072A1 (en) * | 2022-08-23 | 2024-02-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Heat pump dishwasher |
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| CN102066267A (en) * | 2008-08-07 | 2011-05-18 | 松下电器产业株式会社 | Demineralizer and hot water supply apparatus provided with the same |
| CN102123952A (en) * | 2009-02-09 | 2011-07-13 | 松下电器产业株式会社 | Hot-water supply device |
| CN204752276U (en) * | 2015-06-04 | 2015-11-11 | 合肥美的暖通设备有限公司 | Quality of water softening installation , air can heat pump water heater |
| WO2016177718A1 (en) * | 2015-05-06 | 2016-11-10 | Arcelik Anonim Sirketi | A dishwasher comprising a heat pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102150442B1 (en) * | 2013-11-11 | 2020-09-01 | 엘지전자 주식회사 | Laundry Machine |
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| CN102066267A (en) * | 2008-08-07 | 2011-05-18 | 松下电器产业株式会社 | Demineralizer and hot water supply apparatus provided with the same |
| CN102123952A (en) * | 2009-02-09 | 2011-07-13 | 松下电器产业株式会社 | Hot-water supply device |
| WO2016177718A1 (en) * | 2015-05-06 | 2016-11-10 | Arcelik Anonim Sirketi | A dishwasher comprising a heat pump |
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