CN217338487U - Heat pump type dish washing machine - Google Patents

Abstract

The utility model relates to a technical field of dish washer, more specifically relates to a heat pump type dish washer of stoving function is related to. The utility model comprises a dish washer main body and a heat pump system, wherein the dish washer main body is connected with a water inlet pipeline and a water outlet pipeline, and the water inlet pipeline is provided with a first compression pump; the heat pump system comprises a first evaporator, a first stop valve, a compressor, a first condenser and a throttling device which are connected in sequence, wherein the first condenser and a water inlet pipeline are internally provided with washing water for heat exchange, the drying system comprises a fan and an air supply pipeline communicated with a dishwasher main body, the fan, the first evaporator and the first condenser are arranged in the air supply pipeline in sequence, air outlet in the dishwasher main body flows through the first evaporator and the first condenser in sequence under the action of the fan and then returns to the dishwasher main body, and the heat pump dishwasher has the function of drying washed tableware.

Description

Heat pump type dish washing machine

Technical Field

The utility model relates to a heat pump dish washer's technical field, more specifically relates to a heat pump dish washer of stoving function is related to.

Background

The dish washer is honored as a second great invention of freeing both hands of people after the washing machine, and the washing of the tableware mainly comprises the processes of decontamination, cleaning, disinfection, drying and the like. The dishwasher needs to use warm water at 50-60 ℃ in the cleaning and rinsing stage and hot water at 80-90 ℃ in the disinfection stage, however, in the prior art, the washing water is heated mainly in an electric heating mode, a large amount of high-grade electric energy needs to be consumed, and waste water with residual heat does not take measures of waste heat recovery and utilization, which is contrary to the concept of energy conservation and emission reduction.

The existing dish washer provides heat source for the dish washer by using a heating pipe which is arranged in a water tank at the bottom of an inner container, and when in washing, the heating pipe is used for heating while 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 above problems, there are some dishwashers using other heating methods, and the prior art discloses a heat pump dishwasher and a control method including: the washing water heating system comprises an evaporator, a compressor, a condenser, a throttling device, an energy storage device and a heating device, wherein an energy storage medium is contained in the energy storage device, the evaporator is in contact with the energy storage medium to absorb heat of the energy storage medium, and the heating device is positioned on a washing water circuit and assists or is independent of a heat pump system to heat the washing water. The invention realizes the heating of the washing water of the dish-washing machine by combining a direct electric heating mode and a heat pump heating mode, not only makes up the defect that the heating efficiency is greatly influenced by the external environment when a heat pump heating system is used for heating washing, but also provides richer heating control means 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.

However, the above patents have the following disadvantages: although the dishwasher of the above patent solves the problem of large heating power consumption of the heating pipe to a certain extent, the dishwasher described in the above patent lacks a drying function and cannot dry washed dishes.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of dish washer among the prior art lack the stoving function, provide a heat pump dish washer, heat pump dish washer has the stoving mode, can dry to the tableware after the washing in the dish washer.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a heat pump type dish washing machine comprises a dish washing machine main body and a heat pump system, wherein the dish washing machine main body is connected with a water inlet pipeline and a water outlet pipeline, and the water inlet pipeline is provided with a first compression pump; the heat pump system comprises a first evaporator, a first stop valve, a compressor, a first condenser and a throttling device which are sequentially connected, wherein the first condenser and washing water in a water inlet pipeline exchange heat; the heat pump type dishwasher further comprises a drying system, wherein the drying system comprises a fan and an air supply pipeline communicated with the dishwasher main body, the fan, a first evaporator and a first condenser are arranged in the air supply pipeline in sequence, and air outlet in the dishwasher main body flows through the first evaporator and the first condenser in sequence under the action of the fan and then returns to the dishwasher main body.

The utility model discloses a heat pump type dish washer, heat pump system during operation, at first the first evaporimeter absorbs the heat from the air earlier, working medium forms high temperature low pressure gas in the first evaporimeter, high temperature low pressure gas gets into the compressor and compresses and has formed high temperature high pressure gas, high temperature high pressure gas flows to first condenser, releases heat in first condenser and gives the washing water and form low temperature high pressure liquid, gets back to first evaporimeter after the pressure reduction of throttling arrangement at last to this forms a circulation system; when the drying system works, high-temperature wet air in the dish washing machine main body is sucked into the air supply pipeline through the action of the fan, the high-temperature wet air is firstly mixed and condensed with external sucked fresh air, the air temperature after the high-temperature wet air and the fresh air are mixed is kept through adjusting the flow of the fresh air, then the high-temperature wet air is condensed through the first evaporator again, the low-temperature dry air is changed into low-temperature dry air, the low-temperature dry air is heated through the surface of the first condenser and then returns to the inside of the dish washing machine main body again to absorb moisture, a drying cycle is formed, and the heat pump system continuously operates in a drying stage. The utility model discloses a heat pump type dish washer utilizes heat pump system's first evaporimeter and first condenser successively to carry out the condensation drying and intensification to the high temperature and high humidity air in the dish washer, can realize the stoving of tableware, and can practice thrift the energy consumption.

Furthermore, the air supply pipeline comprises a first baffle, a second baffle, an air inlet and an air outlet, the air inlet is arranged in front of the fan, the air outlet is arranged behind the first condenser, the first baffle is rotatably arranged at the air inlet, and the second baffle is rotatably arranged at the air outlet. First baffle and second baffle in the supply-air duct rotate respectively and install in air intake and air outlet, and first baffle and second baffle all have two rotational position: a first gear and a second gear; when the first baffle and the second baffle rotate to the first gear, the main body part of the dish washing machine is communicated with an air supply pipeline where the first evaporator and the first condenser are located under the action of a fan to realize air circulation; when the first baffle and the second baffle rotate to the second gear, the air supply pipeline is divided into two parts, one part of pipeline is communicated with the dishwasher main body, and the other part of pipeline comprises a fan, a first evaporator, a second evaporator and a first condenser which are sequentially arranged.

Furthermore, a first temperature sensor is arranged in the air supply pipeline and is arranged between the first evaporator and the fan. The first sensor maintains the air temperature within the duct within a range.

Further, the dishwasher main body includes a spray device; the spraying device is connected with a water collecting device, and a second compression pump is arranged between the spraying device and the water collecting device. The water collecting device provides washing water for the spraying device through the second compression pump, and the spraying device sprays hot water to clean tableware.

Furthermore, the water collecting device comprises a first water collecting tank for storing washing water and a second water collecting tank for storing waste water, one end of the first water collecting tank is connected to the second compression pump, the other end of the first water collecting tank is connected to the water inlet pipeline, a second temperature sensor is arranged in the first water collecting tank, and the second water collecting tank is connected to the water outlet pipeline. The water collection device comprises two parts separated by a baffle: the second temperature sensor in the first water collecting tank accelerates the flow rate in the pipeline to control the temperature of the washing water entering the water collecting device to be about 50 ℃ when the temperature of the washing water entering the water collecting device is higher than 50 ℃, and slows down the flow rate in the pipeline or makes the temperature of the washing water entering the water collecting device be 50 ℃ through an auxiliary electric heater when the temperature of the washing water entering the water collecting device is lower than 50 ℃.

The hot water washing system comprises an auxiliary electric heater, a heat exchanger, a third stop valve and a fourth stop valve, wherein the auxiliary electric heater and the third stop valve are arranged on a water inlet pipeline, water flows under the action of a first compression pump sequentially flow through the first condenser, the third stop valve and the auxiliary electric heater and then flow into the water collecting device, the heat exchanger and the fourth stop valve are connected, and the heat exchanger and the fourth stop valve are connected with the third stop valve in parallel. After the washing water in the water inlet pipeline exchanges heat with the first condenser, hot water is provided for the water collecting device through the third stop valve; the heat exchanger is used for enhancing heat exchange and adopts a countercurrent arrangement; the auxiliary electric heater may heat the washing water to warm water of 50 deg.c.

Furthermore, the heat exchanger is connected with an energy storage hot tank, a fifth stop valve and a third compression pump are connected between the heat exchanger and the energy storage hot tank, and the heat exchanger, the fifth stop valve, the energy storage hot tank, the third compression pump and the heat exchanger are connected in sequence to form a circulation loop. And hot water in the energy storage hot tank is pumped into the heat exchanger through the third compression pump, and washing water in the heat exchanger flows into the energy storage hot tank through the fifth compression pump. And after the washing water in the water inlet pipeline exchanges heat with the hot water in the energy storage hot tank in the heat exchanger, the hot water is provided for the water collecting device through the fourth stop valve. The heat which is not completely utilized in the drying mode is radiated through the first condenser and stored in the energy storage hot tank.

The high-temperature disinfection system comprises a second evaporator and a second stop valve which are connected, the second evaporator and the second stop valve are connected with the first evaporator and the first stop valve in parallel, and the second evaporator and the wastewater of the water outlet pipeline exchange heat. The second evaporator absorbs the heat of the wastewater in the water outlet pipeline, the temperature of the working medium in the heat pump system rises, and then the working medium enters the compressor to be boosted; because the temperature of the waste water is about 45-50 ℃, the evaporation temperature is higher, the heat pump system can generate high-temperature hot water at 80-90 ℃, the high-temperature hot water is pumped into the water collecting device, and then the high-temperature hot water is sprayed to tableware through the spraying device for high-temperature disinfection.

Further, still include carnot battery circulation system, carnot battery circulation system includes steam power generation system and steam recovery system, steam power generation system includes the sixth stop valve, the hot jar of energy storage, third evaporimeter, the steam turbine of connecting in proper order, the sixth stop valve sets up between the hot jar of energy storage and first condenser, the steam turbine is connected with the compressor electricity, steam recovery system connects between steam turbine and first condenser. The Carnot battery circulating system consists of a steam power generation system and a steam recovery system, in the steam power generation system, hot water in an energy storage hot tank flows to a third evaporator, the temperature of working medium in the third evaporator is raised, then the working medium enters a steam turbine for power generation, and electricity generated by the steam turbine is used by a compressor; the steam power generation system has the function of converting the stored heat into electric energy through a steam turbine, so that the energy can be recycled, and the stored heat can be converted into high-level energy through low-level energy.

Furthermore, the steam recovery system comprises a second condenser, a fourth compression pump, a preheater and a cold tank which are connected in sequence, the second condenser is connected to the steam turbine, cold water in the cold tank exchanges heat with the first condenser and flows to a sixth stop valve, a third evaporator is connected with the preheater, the third evaporator and the preheater are connected in parallel to form a fifth compression pump, and the third evaporator, the fifth compression pump, the preheater and the third evaporator are connected in sequence to form a circulation loop. And after the steam flowing out of the steam turbine flows into the second condenser for heat exchange to form a liquid state, the liquid state is pumped to the preheater by the fourth compression pump and flows into the cold tank, and the water in the cold tank and the first condenser perform heat exchange to form hot water which flows through the sixth stop valve and enters the energy storage hot tank.

Compared with the prior art, the beneficial effects of the utility model are that:

the heat pump type dish washing machine of the utility model has the drying function, and can remove the water on the tableware after washing;

the utility model discloses an air supply duct of heat pump type dish washer communicates dish washer main part and heat pump system, through adjusting the baffle position, can change dish washer and enter different mode of operation, realizes the multi-functional switching operation of dish washer;

the temperature sensor in the air supply pipeline of the heat pump type dish washing machine can keep the air temperature in the dish washing machine in a stable range, and the tableware is dried with highest efficiency;

the water collecting device of the heat pump type dish washing machine comprises a first water collecting tank for storing washing water and a second water collecting tank for storing waste water, so that the waste heat of the waste water can be conveniently recovered;

the heat pump type dish washing machine has the function of hot water washing, realizes the high-temperature washing of tableware, and effectively removes oil stains on the surface of the tableware;

the utility model discloses a heat pump type dish washer has the hot jar of energy storage, can store the heat in the hot water washing stage waste water waste heat that gets up and the drying stage air of retrieving in the hot jar of energy storage, has energy saving and emission reduction, improves energy utilization and rate and practice thrift cost's advantage, has good development prospect.

The heat pump type dish washer of the utility model has the high temperature disinfection function and can disinfect the tableware;

the utility model discloses a heat pump type dish washer has carnot battery circulation function, not only can be with the heat conversion who stores up for the electric energy to provide dish washer and use, can also utilize the energy storage heat pot of carnot battery circulation system to heat for the washing water at the beginning, save the heat pump system when beginning the washing and open the time that the operation still can not heat the washing water.

Drawings

FIG. 1 is a schematic diagram of a heat pump dishwasher drying system according to an embodiment;

FIG. 2 is a schematic view of a hot water washing system of a heat pump type dishwasher according to a second embodiment;

FIG. 3 is a schematic view of a high-temperature sterilization system of a heat pump type dishwasher according to a third embodiment;

FIG. 4 is a schematic diagram of a Carnot battery circulation system of a four-heat-pump dishwasher according to an embodiment;

FIG. 5 is a system diagram of a four-heat-pump dishwasher according to an embodiment;

in the drawings: 1. a dishwasher main body; 2. a first compression pump; 3. a first evaporator; 4. a first shut-off valve;

5. a compressor; 6. a first condenser; 7. a throttling device; 8. a fan; 9. a first baffle plate; 10. a second baffle; 11. an air inlet; 12. an air outlet; 13. a spraying device; 14. a water collection device; 15. a second compression pump; 16. a second evaporator; 17. a second stop valve; 18. an auxiliary electric heater; 19. a heat exchanger; 20. a third stop valve; 21. a fourth stop valve; 22. an energy storage hot tank; 23. a fifth stop valve;

24. a third compression pump; 25. a sixth stop valve; 26. a third evaporator; 27. a steam turbine; 28. a second condenser; 29. a fourth compression pump; 30. a preheater; 31. cooling the tank; 32. and a fifth compression pump.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example one

Fig. 1 shows a first embodiment of a heat pump dishwasher according to the present invention. A heat pump type dish washing machine comprises a dish washing machine main body 1 and a heat pump system, wherein the dish washing machine main body 1 is connected with a water inlet pipeline and a water outlet pipeline, and the water inlet pipeline is provided with a first compression pump 2; the heat pump system comprises a first evaporator 3, a first stop valve 4, a compressor 5, a first condenser 6 and a throttling device 7 which are connected in sequence, wherein the first condenser 6 exchanges heat with washing water in a water inlet pipeline; the heat pump type dish washing machine further comprises a drying system, wherein the drying system comprises a fan 8 and an air supply pipeline communicated with the dish washing machine main body 1, the fan 8, the first evaporator 3 and the first condenser 6 are sequentially arranged in the air supply pipeline, and air outlet in the dish washing machine main body 1 flows through the first evaporator 3 and the first condenser 6 in sequence under the action of the fan 8 and then returns to the dish washing machine main body 1.

The air supply pipeline comprises a first baffle plate 9, a second baffle plate 10, an air inlet 11 and an air outlet 12, the air inlet 11 is arranged in front of the fan 8, the air outlet 12 is arranged behind the first condenser 6, the first baffle plate 9 is rotatably arranged at the air inlet 11, and the second baffle plate 10 is rotatably arranged at the air outlet 12. Wherein, be equipped with first temperature sensor in the supply air duct, first temperature sensor arranges in between first evaporimeter 3 and fan 8. The first shutter 9 and the second shutter 10 both have two rotational positions: a first gear and a second gear; when the first baffle 9 and the second baffle 10 rotate to the first gear, the dishwasher main body 1 is partially communicated with the air supply pipelines where the first evaporator 3 and the first condenser 6 are positioned under the action of the fan 8 to realize air circulation; when the first baffle 9 and the second baffle 10 are both rotated to the second position, the air supply duct is divided into two parts, one part is communicated with the dishwasher body 1, and the other part comprises the fan 8, the first evaporator 3 and the first condenser 6 which are arranged in sequence.

Wherein, the first baffle 9 and the second baffle 10 are always in the second gear state, when the dishwasher enters the drying mode, the first baffle 9 and the second baffle 10 rotate to the first gear, and when the drying mode is finished, the first baffle 9 and the second baffle 10 rotate to the second gear.

The first baffle 9 and the second baffle 10 each use one of them as a rotation axis to rotate the rotation axis to connect the air inlet 11 and the air outlet 12, the air inlet 11 and the air outlet 12 are provided with a corresponding connection axis, so that the rotation axes of the first baffle and the second baffle can rotate around the connection axis. The size of first baffle 9 and second baffle 10, the shape is unanimous with air intake 11 and air outlet 12 and with the supply-air duct cross section of dishwasher main part 1 intercommunication respectively, guarantee first baffle 9 and second baffle 10 when first gear, air outlet 12 can be stopped up to second baffle 10, guarantee first baffle 9 and second baffle 10 when the second gear, the supply-air duct with dishwasher main part 1 intercommunication can be stopped up to first baffle 9 and second baffle 10, make the supply-air duct separated into two parts.

The connection modes of the first baffle 9 and the second baffle 10 with the air inlet 11 and the air outlet 12 may be hinged connection or other rotation connection modes, and the driving mechanisms of the first baffle 9 and the second baffle 10 may be hydraulic driving, pneumatic driving, electric driving, mechanical driving or other driving mechanisms.

The dishwasher main body 1 comprises a spraying device 13, the spraying device 13 is connected with a water collecting device 14, and a second compression pump 15 is arranged between the spraying device 13 and the water collecting device 14. The water collecting device 14 comprises a first water collecting tank for storing washing water and a second water collecting tank for storing waste water, one end of the first water collecting tank is connected to the second compression pump 15, the other end of the first water collecting tank is connected to the water inlet pipeline, a second temperature sensor is arranged in the first water collecting tank, and the second water collecting tank is connected to the water outlet pipeline.

The specific working principle of this embodiment is as follows:

when the drying mode is started, the positions of the first baffle 9 and the second baffle 10 are both rotated to the first gear, the air inlet 11 and the first stop valve 4 are opened, and the air outlet 12 is closed. Under the effect of fan 8, the high temperature vapor in the dish washer main part 1 is siphoned out, mix earlier with air new trend and carry out first step condensation dehumidification, the humid air temperature range of drawing out from the dish washer main part 1 this moment is bigger, the temperature of the humid air after controlling the mixture through the flow of adjusting the new trend, and measure through the first temperature sensor of placing between first evaporimeter 3 and fan 8, make the mist temperature through first evaporimeter 3 keep in a stable within range, the mist carries out condensation dehumidification through first evaporimeter 3 afterwards, become low temperature dry air, the dry air of low temperature gets into inside the dish washer after becoming high temperature dry air after the first condenser 6 absorbs heat afterwards, form a gas flow circulation. Wherein the dishwasher rotates both the first barrier 9 and the second barrier 10 to the first gear only in the drying mode, and the dishwasher is in the second gear in the other modes, both the first barrier 9 and the second barrier 10.

Example two

This embodiment is similar to the embodiment except that it further includes a hot water washing system. As shown in fig. 2, the hot water washing system includes an auxiliary electric heater 18, a heat exchanger 19, a third stop valve 20, and a fourth stop valve 21, the auxiliary electric heater 18 and the third stop valve 20 are disposed on the water inlet pipeline, the water flow under the action of the first compression pump 2 flows through the first condenser 6, the third stop valve 20, and the auxiliary electric heater 18 in sequence and then flows into the water collection device 14, the heat exchanger 19 and the fourth stop valve 21 are connected, and the heat exchanger 19 and the fourth stop valve 21 are connected in parallel with the third stop valve 20.

The heat exchanger 19 is connected with an energy storage hot tank 22, and a fifth stop valve 23 and a third compression pump 24 are connected between the heat exchanger 19 and the energy storage hot tank 22; wherein, the heat exchanger 19, the fifth stop valve 23, the energy storage hot tank 22, the third compression pump 24 and the heat exchanger 19 are connected in sequence to form a circulation loop.

The specific working principle of this embodiment is as follows:

when the dishwasher enters a hot water washing mode, the first stop valve 4, the air inlet 11 and the air outlet 12 are opened, the first baffle 9 and the second baffle 10 rotate to the second gear, the fan 8 is opened, and at the moment, the heat pump system only absorbs the heat of the air through the first evaporator 3. When the heat released by the first condenser 6 in the heat pump system is enough to heat the washing water, the fourth stop valve 21 and the fifth stop valve 23 are closed, and the third stop valve 20 is opened, the heat of the washing water is fully provided by the heat pump system. The washing water is pumped into the first water collecting tank through the third stop valve 20, and is pumped into the spraying device 13 through the second compression pump 15 to wash the tableware in the dishwasher. A second temperature sensor is arranged in the first water collecting tank, when the temperature of the washing water entering the first water collecting tank is higher than 50 ℃, the flow speed in the pipeline is accelerated, the temperature of the washing water entering the first water collecting tank is controlled to be about 50 ℃, and when the temperature of the washing water entering the first water collecting tank is lower than 50 ℃, the flow speed in the pipeline is reduced or the temperature of the washing water entering the first water collecting tank is controlled to be 50 ℃ through the auxiliary electric heater 18.

EXAMPLE III

This embodiment is similar to the first or second embodiment, except that it further comprises a high temperature sterilization system. As shown in FIG. 3, the high-temperature disinfection system comprises a second evaporator 16 and a second stop valve 17 which are connected, the second evaporator 16 and the second stop valve 17 are connected with the first evaporator 3 and the first stop valve 4 in parallel, and the second evaporator 16 exchanges heat with the wastewater in the water outlet pipeline.

The specific working principle of this embodiment is as follows:

when the dishwasher enters a high-temperature sterilization mode, the first stop valve 4, the second stop valve 17, the third stop valve 20 are opened, and the fourth stop valve 21 is closed. The first evaporator 3 of the working medium in the heat pump system absorbs the heat of air, the second evaporator 16 absorbs the waste heat of waste water, the temperature of the waste water is about 45 ℃, the waste water is used as the evaporation temperature of the second evaporator 16, the working medium absorbs the heat, then the working medium sequentially passes through the compressor 5 and the first condenser 6, and then returns to the first evaporator 3 and the second evaporator 16 after being depressurized by the throttling device 7, so that a cycle is formed. At the moment, the heat absorbed by the washing water exchanging heat with the working medium in the first condenser 6 can reach 80-90 ℃. The high temperature washing water enters the first water collecting tank through the third stop valve 20, and is pumped into the spraying device 13 by the second compression pump 15 to disinfect the tableware at high temperature.

Example four

This embodiment is similar to any one of the first to third embodiments, except that a carnot cell circulation system is further included. As shown in fig. 4 and 5, the carnot cell cycle system includes a steam power generation system and a steam recovery system, the steam power generation system includes a sixth stop valve 25, an energy storage hot tank 22, a third evaporator 26 and a steam turbine 27 which are connected in sequence, the sixth stop valve 25 is arranged between the energy storage hot tank 22 and the first condenser 6, the steam turbine 27 is electrically connected with the compressor 5, and the steam recovery system is connected between the steam turbine 27 and the first condenser 6. Specifically, the steam recovery system comprises a second condenser 28, a fourth compression pump 21, a preheater 30 and a cooling tank 31 which are sequentially connected, wherein the second condenser 28 is connected to a steam turbine 27, cold water in the cooling tank 31 exchanges heat with the first condenser 6 and flows to a sixth stop valve 25, a third evaporator 26 is connected with the preheater 30, and the third evaporator 26 is connected with the preheater 30 in parallel and is connected with a fifth compression pump 32; wherein, the third evaporator 26, the fifth compression pump 32, the preheater 30 and the third evaporator 26 are connected in sequence to form a circulation loop, so as to improve the heat exchange efficiency of the heat exchanger 19.

The specific working principle of this embodiment is as follows:

and in the running processes of hot water washing, high-temperature disinfection and drying modes, the steam power generation system is continuously started. At the beginning of the hot water washing mode, the steam power generation system now powers the compressor 5 within the heat pump system. The heat pump system needs time to start, and the washing water exchanges heat with the energy storage hot tank 22 of the steam power generation system. At this time, the fourth, fifth, and sixth stop valves 21, 23, and 25 are opened, and the third stop valve 20 is closed. The hot water in the energy storage hot tank 22 is pumped into the heat exchanger 19 through the third compression pump 24 to exchange heat with the washing water. The washing water is pumped into the heat exchanger 19 by the first compression pump 2 to exchange heat with the hot water in the energy storage hot tank 22, and then enters the first water collecting tank of the water collecting device 14 through the fourth stop valve 21. The hot water in the energy storage hot tank 22 of the steam power generation system exchanges heat with the washing water in the heat exchanger 19, and flows into the third evaporator 26 to be evaporated into steam, the steam then flows into the steam turbine 27 to provide heat for the steam turbine 27, the steam turbine 27 generates electric power under the action of the steam, and the generated electric power is used by the compressor 5. During the operation of the high-temperature sterilization mode, the hot water in the energy storage hot tank 22 continuously flows to the third evaporator 26 to be evaporated, and then the steam turbine 27 generates electricity, and the generated electricity is used by the compressor 5. In the drying mode operation process, the heat pump system heats the air by the heat generated by the first condenser 6, and for the heat which is not fully utilized, the working medium in the first condenser 6 exchanges heat with the cold water in the cold tank 31, and the heat is stored in the energy storage hot tank 22. The steam recovery system recovers the steam passing through the steam turbine 27, the steam flows into the second condenser 28 from the steam turbine 27 and is condensed into liquid water, the liquid water is pumped into the preheater 30 by the fourth compression pump 29 and then flows into the cold tank 31, and the cold water in the cold tank 31 exchanges heat with the first condenser 6 and then flows into the energy storage hot tank 23 to form a cycle.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features 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.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a heat pump type dish washer, includes dish washer main part (1) and heat pump system, dish washer main part (1) is connected with water intake pipe and outlet pipe way, the water intake pipe is equipped with first compression pump (2), heat pump system includes first evaporimeter (3), first stop valve (4), compressor (5), first condenser (6), throttling arrangement (7) that the order is connected, first condenser (6) and inlet pipe in the washing water carry out the heat exchange, its characterized in that: still include drying system, drying system includes fan (8) and the supply-air duct who communicates with dishwasher main part (1), fan (8), first evaporimeter (3) and first condenser (6) are arranged in supply-air duct in proper order, and the dish washer main part (1) interior air-out is got back to in dishwasher main part (1) after first evaporimeter (3) and first condenser (6) flow through in order under the effect of fan (8).

2. A heat pump dishwasher according to claim 1, characterized in that: the air supply pipeline comprises a first baffle (9), a second baffle (10), an air inlet (11) and an air outlet (12), wherein the air inlet (11) is arranged in front of the fan (8), the air outlet (12) is arranged behind the first condenser (6), the first baffle (9) is rotatably arranged at the air inlet (11), and the second baffle (10) is rotatably arranged at the air outlet (12).

3. A heat pump dishwasher according to claim 2, characterized in that: a first temperature sensor is arranged in the air supply pipeline and is arranged between the first evaporator (3) and the fan (8).

4. A heat pump dishwasher according to claim 1, characterized in that: the dishwasher main body (1) comprises a spraying device (13), the spraying device (13) is connected with a water collecting device (14), and a second compression pump (15) is arranged between the spraying device (13) and the water collecting device (14).

5. A heat pump dishwasher according to claim 4, characterized in that: the water collecting device (14) comprises a first water collecting tank and a second water collecting tank, wherein the first water collecting tank is used for storing washing water, the second water collecting tank is used for storing waste water, one end of the first water collecting tank is connected to the second compression pump (15), the other end of the first water collecting tank is connected to the water inlet pipeline, a second temperature sensor is arranged in the first water collecting tank, and the second water collecting tank is connected to the water outlet pipeline.

6. A heat pump dishwasher according to claim 1, characterized in that: the hot water washing system comprises an auxiliary electric heater (18), a heat exchanger (19), a third stop valve (20) and a fourth stop valve (21), wherein the auxiliary electric heater (18) and the third stop valve (20) are arranged on a water inlet pipeline, water flows sequentially under the action of a first compression pump (2) flow through the first condenser (6), the third stop valve (20) and the auxiliary electric heater (18), the heat exchanger (19) and the fourth stop valve (21) are connected, and the heat exchanger (19) and the fourth stop valve (21) are connected with the third stop valve (20) in parallel.

7. The heat pump dishwasher of claim 6, wherein: the heat exchanger (19) is connected with an energy storage hot tank (22), a fifth stop valve (23) and a third compression pump (24) are connected between the heat exchanger (19) and the energy storage hot tank (22), and the heat exchanger (19), the fifth stop valve (23), the energy storage hot tank (22), the third compression pump (24) and the heat exchanger (19) are sequentially connected to form a circulation loop.

8. A heat pump dishwasher according to claim 1, characterized in that: the high-temperature disinfection system comprises a second evaporator (16) and a second stop valve (17) which are connected, the second evaporator (16) and the second stop valve (17) are connected with the first evaporator (3) and the first stop valve (4) in parallel, and the second evaporator (16) and the wastewater of the water outlet pipeline exchange heat.

9. A heat pump dishwasher according to claim 1, characterized in that: still include carnot battery circulation system, carnot battery circulation system includes steam power generation system and steam recovery system, steam power generation system is including sixth stop valve (25), energy storage hot pot (22), third evaporimeter (26), steam turbine (27) that the order is connected, sixth stop valve (25) set up between energy storage hot pot (22) and first condenser (6), steam turbine (27) are connected with compressor (5) electricity, steam recovery system connects between steam turbine (27) and first condenser (6).

10. A heat pump dishwasher according to claim 9, characterized in that: the steam recovery system comprises a second condenser (28), a fourth compression pump (29), a preheater (30) and a cold tank (31) which are connected in sequence, wherein the second condenser (28) is connected to the steam turbine (27), cold water in the cold tank (31) exchanges heat with the first condenser (6) and flows to a sixth stop valve (25), the third evaporator (26) is connected with the preheater (30) in parallel, and the fifth compression pump (32), the preheater (30) and the third evaporator (26) are connected in sequence to form a circulation loop.

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