CN212939622U

CN212939622U - Dish washing machine

Info

Publication number: CN212939622U
Application number: CN202020579916.8U
Authority: CN
Inventors: 赵祥; 杨林; 李宁
Original assignee: Qingdao Haier Dishwasher Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Dishwasher Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-04-13
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a dish-washing machine, include: a washing chamber; the preheating water tank can preheat water contained in the preheating water tank; the waste water heat energy recovery tank is used for containing waste water for recovering heat; the heat pump system is provided with a condenser positioned in the preheating water tank, a first evaporator positioned in the wastewater heat energy recovery tank and used for absorbing heat in wastewater, a second evaporator used for absorbing heat in gas, and a control valve used for controlling the communication between the first evaporator and the condenser or the communication between the second evaporator and the condenser. Through setting up heat pump system for the water in the heating preheating water tank, through setting up the thermal second evaporimeter in being arranged in absorbing the thermal first evaporimeter in the waste water and being arranged in absorbing gas, after absorbing the heat in the waste water, the control valve with the second evaporimeter with the condenser intercommunication for absorb the heat of dish washer exhaust steam, continue to the water heating in the preheating water tank, be favorable to guaranteeing that the water in the preheating water tank reaches the temperature of settlement.

Description

Dish washing machine

Technical Field

The utility model belongs to the technical field of dish washer, concretely relates to dish washer with energy recuperation function.

Background

The dish washer is a household kitchen appliance which replaces manpower to clean tableware or cooking utensils such as dishes, plates, dishes, cups, spoons, chopsticks, knife forks, pans, shovels and the like, reduces labor intensity, improves working efficiency and improves cleanness and sanitation.

The dish washer generally sets up a plurality of processes such as washing, rinsing, stoving, wherein, washs and the rinsing water has certain requirement to the temperature of water, and among the prior art, generally the mode of selecting electric heating heats the washing water, and the electric heating mode power consumption is big, very not environmental protection.

The existing dish washer with the heat energy recovery function is mainly used for heat energy recovery, namely, the hot water drained is kept in one water tank, the other water tank is the incoming tap water, heat is transferred through a partition plate, and after the heat transfer is balanced, the temperature of the normal-temperature tap water is increased, so that the heat recovery efficiency is realized. The existing heat energy recovery has the following defects: the heat recovery's inefficiency, the dissipation of energy is extravagant many, and there is the waste of hot steam energy in the dish washer in-service use, because hot steam exists in the courage in addition, also leads to the tableware effectively to obtain the drying jointly, and vapor condensation can lead to the tableware humidity, breeds the bacterium easily.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to foretell problem among the prior art, provide a dish washer.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a dishwasher, comprising:

a washing chamber;

the preheating water tank can preheat water contained in the preheating water tank;

the waste water heat energy recovery tank is used for containing waste water for recovering heat;

the heat pump system is provided with a condenser positioned in the preheating water tank, a first evaporator positioned in the wastewater heat energy recovery tank and used for absorbing heat in wastewater, a second evaporator used for absorbing heat in gas, and a control valve used for controlling the communication between the first evaporator and the condenser or the communication between the second evaporator and the condenser.

Furthermore, the second evaporator is arranged on the inner side wall of the cylindrical frame, and a fan used for driving air to flow is arranged in a space surrounded by the cylindrical frame.

Further, still include the blast pipe with washing chamber intercommunication, the gas outlet of blast pipe is located fan department.

Further, still include the main casing that is located the washing chamber outside, establish evaporation shell on the main casing, first evaporimeter and second evaporimeter are established in the evaporation shell.

Furthermore, the evaporation shell is provided with a mounting plate close to the main shell, an opening matched with the cylindrical frame is formed in the mounting plate, and the cylindrical frame is fixedly connected to the opening.

Furthermore, a fan extending into the opening is fixed on one side of the shell close to the evaporation shell.

Furthermore, be equipped with in the evaporation shell waste water heat recovery case and be used for the heat transfer wind channel of second evaporimeter heat transfer, be equipped with the baffle between waste water heat recovery case and the heat transfer wind channel.

Furthermore, a waste water heat energy recovery box is arranged below the partition plate, and a water leakage hole is formed in the partition plate.

Furthermore, the evaporation shell is provided with a rear back plate far away from the main shell, and a ventilation grid communicated with the heat exchange air duct is arranged on the rear back plate.

Further, the preheating water tank is provided with an insulating layer.

Furthermore, the washing machine also comprises a water supply pipeline for supplying water to the washing cavity and the preheating water tank.

Furthermore, the washing machine also comprises a connecting pipeline for connecting the preheating water tank and the washing cavity.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the heat pump system is arranged and used for heating water in the preheating water tank, the first evaporator used for absorbing heat in waste water and the second evaporator used for absorbing heat in gas are arranged, after the heat in the waste water is absorbed, the second evaporator is communicated with the condenser through the control valve and used for absorbing heat of steam discharged by the dish-washing machine, the water in the preheating water tank is continuously heated, and the water in the preheating water tank is favorably ensured to reach the set temperature; and first evaporimeter is located waste water heat recovery incasement for first evaporimeter and waste water direct contact are favorable to absorbing heat in the waste water, improve heat recovery and utilization ratio in the waste water.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a dishwasher in accordance with the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

fig. 3 is a schematic diagram of a part of the structure in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up" and "down" are based on the positional relationship shown in the drawings, and the direction close to the user in the normal use state of the dishwasher is "front", otherwise "rear". The terminology is for the purpose of describing the invention only and is not intended to be limiting of the invention since it is not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, there is an embodiment of a dishwasher according to the present invention, which includes: the washing machine comprises a washing cavity 10, a preheating water tank 20, a waste water heat energy recovery tank 31 and a heat pump system, wherein the washing cavity 10 is used for placing tableware, the preheating water tank 20 can preheat water contained in the washing cavity, and the waste water heat energy recovery tank 31 is used for containing waste water for recovering heat; the heat pump system is provided with a condenser 41 positioned in the preheating water tank 20, a first evaporator 42 positioned in the waste water heat energy recovery tank 31, a second evaporator 43 used for absorbing heat in gas, and a control valve 44, wherein the first evaporator 42 is used for absorbing heat in waste water in the waste water heat energy recovery tank 31, and the control valve 44 is used for controlling the first evaporator 42 to be communicated with the condenser 41 or the second evaporator 43 to be communicated with the condenser 41; that is, the heat pump system has the optional first evaporator 42 and the second evaporator 43, the first evaporator 42 can be connected to the heat pump system, the heat pump system works, the first evaporator 42 absorbs the heat in the waste water, so that the condenser 41 releases the heat, and heats the water in the preheating water tank 20; after the heat absorption of the wastewater in the wastewater heat energy recovery tank 31 is completed, the second evaporator 43 is switched to be communicated with the condenser 41 through the control valve 44, the heat pump system works, the second evaporator 43 absorbs the heat energy in the steam discharged by the dishwasher, so that the condenser 41 releases heat, and the water in the preheating water tank 20 is heated; after the heat absorption of the wastewater in the wastewater heat energy recovery tank 31 is completed, the water in the preheating water tank 20 is continuously heated, which is beneficial to ensuring that the water in the preheating water tank 20 reaches the set temperature; the first evaporator 42 is positioned in the wastewater heat energy recovery tank 31, so that the first evaporator 42 is in direct contact with the wastewater, the absorption of heat in the wastewater is facilitated, and the heat recovery utilization rate in the wastewater is improved; the second evaporator 43 is provided to facilitate the absorption of heat of the steam discharged from the dishwasher and heat of the air, facilitating the recycling of energy.

In this embodiment, the dishwasher further includes a main housing 50 located outside the washing chamber 10, an evaporation housing 30 provided on the main housing 50, and the first and

second evaporators

42 and 43 are provided in the evaporation housing 30. Specifically, a waste water heat energy recovery tank 31 and a heat exchange air duct 32 for heat exchange of the second evaporator 43 are arranged in the evaporation shell 30, a partition plate 33 is arranged between the waste water heat energy recovery tank 31 and the heat exchange air duct 32, and the waste water heat energy recovery tank 31 is located below the partition plate 33.

The evaporation housing 30 has a mounting plate 34 close to the main housing 50, an opening 341 is opened on the mounting plate 34, a cylindrical frame 35 extending in a direction away from the main housing 50 is provided at the opening 341, the second evaporator 43 is provided on an inner side wall of the cylindrical frame 35, and a fan 44 for driving air to flow is provided in a space surrounded by the cylindrical frame 35. Establish at the inside wall of cylindric frame 35 through setting up second evaporimeter 43, be favorable to second evaporimeter 43 to occupy less space to be favorable to the setting of fan 44, be favorable to blowing the exhaust whole of dish washer to second evaporimeter 43 on, be favorable to improving the heat exchange efficiency of second evaporimeter 43. The fan 44 is fixed to the main housing 50 and extends into the opening 341. The dishwasher further comprises an exhaust pipe communicated with the washing chamber 10, wherein an air outlet of the exhaust pipe is located at the fan 44, and the damp and hot air in the washing chamber 10 is exhausted through the exhaust pipe and blown onto the second evaporator 43 through the fan 44, which is beneficial to promoting the heat absorption of the second evaporator 43.

When the second evaporator 43 is communicated with the condenser 41 and works, condensed water can be condensed on the inner wall of the heat exchange air duct 32, water leakage holes are formed in the partition plate 33, and the condensed water flows into the wastewater heat energy recovery tank 31, so that the water blowing condition is avoided, the heat exchange efficiency is favorably ensured, and the phenomenon that the condensed water is stored for a long time to cause bacterial breeding, corrosion to the inner wall of the heat exchange air duct 32 and the like is avoided; it is preferable that the partition 33 is inclined slightly and a water leakage hole is formed at the lower end of the partition 33 to facilitate the drainage of the condensed water.

The evaporation shell 30 has a back plate 36 far away from the main shell, and the back plate 36 is provided with a ventilation grille 361 communicated with the heat exchange air duct 32, so as to realize the communication between the heat exchange air duct 32 and the outside, which is beneficial to the heat exchange of the second evaporator 43.

In this embodiment, the preheating water tank 20 is provided with an insulating layer, which is beneficial to the heat preservation of the preheating water tank 20 and prevents the heat of the water in the preheating water tank 20 from being dissipated outwards. The dishwasher is also provided with a water supply pipeline for supplying water to the washing cavity 10 and the preheating water tank 20, and a connecting pipeline for connecting the preheating water tank 20 and the washing cavity 10; water is injected into the preheating water tank 20 through a water supply pipe, and the water in the preheating water tank 20 is transferred into the washing chamber 10 through a connection pipe.

The operation of the dishwasher is explained below:

s10 first program run of dishwasher starts:

s1, a dish-washing machine feeds water into a washing cavity and a preheating water tank 20 through a water supply pipeline;

s2, executing a pre-washing program, and draining water after the pre-washing program is finished;

s3, main washing water inlet;

s4, executing a main washing program and synchronously heating washing water;

s5, finishing the main washing program, and draining water into a waste water heat energy recovery tank 31;

s6, the heat pump system works, the first evaporator 42 is communicated with the condenser 41, and the first evaporator 42 absorbs heat in the wastewater, so that the condenser 41 releases heat to heat water in the preheating water tank 20;

s7, after the heat pump system works for a set time, the control valve 44 switches the second evaporator 43 to be communicated with the condenser 41, and the second evaporator 43 absorbs heat energy in the air, so that the condenser 41 releases heat to heat water in the preheating water tank 20;

and S8, stopping the heat pump system after the water temperature in the preheating water tank 20 reaches a set temperature.

For the operation of the heat pump system, heat release and heat absorption are realized through the change between the liquid state and the gas state of the refrigerant, specifically, when the first evaporator 42 is communicated with the condenser 41, the refrigerant is subjected to waste water thermal evaporation in the first evaporator 42, the refrigerant enters the compressor along the pipeline, the vapor refrigerant completes condensation heat release on the condenser 41, the heat energy heats the water in the preheating water tank 20, and the energy-lost liquid refrigerant subsequently reenters the first evaporator 42 along the pipeline through the expansion valve to obtain energy to complete one heat cycle. When the second evaporator 43 is communicated with the condenser 41, the refrigerant is subjected to steam heat or air energy evaporation in the second evaporator 43, the refrigerant enters the compressor along the pipeline, the steam-state refrigerant completes heat release in the condensation process on the condenser 41, the heat energy heats water in the preheating water tank 20, and the energy-lost liquid-state refrigerant subsequently enters the second evaporator 43 again along the pipeline through the expansion valve to obtain energy to complete one heat cycle. The hot steam in the inner container is communicated with the outside through a heat exhaust steam pipe, and the negative pressure generated by the working of the fan can pump the steam out and is used as a part of high-temperature heat source of the air source heat pump.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. A dishwasher, comprising:

a washing chamber;

2. The dishwasher of claim 1, wherein the second evaporator is provided on an inner sidewall of the tub, and a fan for driving a flow of air is provided in a space surrounded by the tub.

3. The dishwasher of claim 2, further comprising an exhaust duct in communication with the washing chamber, an air outlet of the exhaust duct being located at the fan.

4. The dishwasher of claim 2, further comprising a main housing located outside the washing chamber, an evaporation housing provided on the main housing, the first and second evaporators being provided within the evaporation housing.

5. The dishwasher of claim 4, wherein the evaporation housing has a mounting plate adjacent to the main housing, the mounting plate having an opening therein that is mated with the rack, the rack being attached to the opening.

6. A dishwasher according to claim 5, wherein a fan is secured to the housing adjacent the evaporation housing and projects into the opening.

7. The dishwasher of claim 4, wherein the evaporation shell is internally provided with the waste water heat energy recovery tank and a heat exchange air duct for heat exchange of the second evaporator, and a partition plate is arranged between the waste water heat energy recovery tank and the heat exchange air duct.

8. The dishwasher of claim 7, wherein a waste water heat energy recovery tank is provided below the partition plate, and a water leakage hole is provided on the partition plate.

9. The dishwasher of claim 7, wherein the evaporation housing has a back plate remote from the main housing, and a ventilation grille is provided on the back plate in communication with the heat exchange air duct.

10. The dishwasher of any one of claims 1 to 9, further comprising a water supply line for supplying water to the washing chamber and the preheating water tank, and a connection line connecting the preheating water tank and the washing chamber.