CN216308263U

CN216308263U - Heat pump type clothes dryer double-circulation refrigerating system

Info

Publication number: CN216308263U
Application number: CN202122816156.5U
Authority: CN
Inventors: 尚殿波
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-15
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a heat pump type clothes dryer double-circulation refrigerating system, and relates to the technical field of clothes dryers. The utility model comprises a drying chamber, a circulating fan, an air duct and a refrigerant circulating system; the refrigerant circulating system comprises a compressor, a condenser, an electromagnetic valve, a first capillary tube, a second capillary tube, a first evaporator and a second evaporator; the compressor, the condenser, the electromagnetic valve, the first capillary tube and the first evaporator are sequentially communicated in series through a refrigeration pipeline to form a closed loop; the second capillary tube is connected with the second evaporator in series through a refrigeration pipeline and then connected with the first capillary tube in parallel. According to the utility model, the second capillary tube and the second evaporator are arranged, the second capillary tube and the second evaporator are connected in series through the refrigeration pipeline and then connected in parallel with the first capillary tube, and the single evaporator or the double evaporators are used for heat exchange in a conversion manner at different stages of a clothes drying process, so that the matching of heat exchange capacity and load is realized, the refrigeration efficiency is improved, and the power consumption of the compressor is reduced.

Description

Heat pump type clothes dryer double-circulation refrigerating system

Technical Field

The utility model belongs to the technical field of clothes dryers, and particularly relates to a dual-cycle refrigeration system of a heat pump type clothes dryer.

Background

With the continuous improvement of living standard of people, the clothes dryer gradually enters into every family, and the wet clothes after being washed are quickly dried by using the clothes dryer, so that the clothes dryer gradually becomes the living habit of consumers. The high-end clothes dryers in the market at present mostly use a heat pump type refrigerating system, and the heat pump type clothes dryers become the most favored types with the advantages of small damage to clothes, stable performance, good drying effect and the like, and have grown into the high-end models in the market.

The working system of the conventional heat pump type clothes dryer is shown in fig. 1 and comprises a drying chamber 1, a circulating fan 2, an air duct 3 and a refrigerant circulating system, wherein the drying chamber 1, the circulating fan 2 and the refrigerant circulating system are communicated through the air duct 3, the refrigerant circulating system comprises a compressor 4, a condenser 5, a first capillary tube 7 and a first evaporator 8, and the compressor 4, the condenser 5, the first capillary tube 7 and the first evaporator 8 are sequentially connected in series to form a closed loop. The working principle is as follows: wet clothes are put into the drying chamber 1, the circulating fan 2 is started to form circulating air in the air duct 3, the circulating air takes away moisture from the clothes to form humid air, the humid air flows into the first evaporator 8 to be condensed and dehumidified, the dehumidified air flows into the drying chamber 1 after being heated by the condenser 5 again, the moisture is taken away from the clothes to form humid air again, the humid air flows into the first evaporator 8 again to be condensed and dehumidified, and the circulation is carried out until the clothes are dried and stopped. However, the drying system has the following problems: the heat pump type clothes dryer refrigerating system is in a single-system circulating refrigerating mode, namely, an evaporator and a condenser are connected in series to work, and the refrigerating working condition of the system cannot be adjusted according to the change of clothes drying load. At the later stage of drying, the reduction of accompanying person's clothing water content, humid air still has steam less, and humid air descends with the heat load of evaporimeter heat exchange, therefore the temperature of evaporimeter also can reduce gradually in step, and evaporimeter heat transfer ability and system load mismatch lead to refrigeration cycle efficiency to descend. Therefore, power consumption is increased at the later stage of drying, and dehumidification efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-circulation refrigerating system of a heat pump type clothes dryer, which is characterized in that a second capillary tube and a second evaporator are arranged, the second capillary tube and the second evaporator are connected in series through a refrigerating pipeline and then connected in parallel with a first capillary tube, and a single evaporator or a double evaporator is used for heat exchange in a changing way at different stages of a clothes drying process, so that the matching of heat exchange capacity and load is realized, and the problems that the conventional heat pump type clothes dryer works through the series connection of an evaporator and a condenser, the refrigerating working condition of the system cannot be adjusted according to the change of clothes drying load, the power consumption is increased at the later drying stage, and the dehumidification efficiency is reduced are solved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a double-circulation refrigerating system of a heat pump type clothes dryer, which comprises a drying chamber, a circulating fan, an air duct and a refrigerant circulating system, wherein the drying chamber, the circulating fan and the refrigerant circulating system are communicated through the air duct. The refrigerant circulating system comprises a compressor, a condenser, an electromagnetic valve, a first capillary tube, a second capillary tube, a first evaporator and a second evaporator. The compressor, the condenser, the electromagnetic valve, the first capillary tube and the first evaporator are sequentially communicated in series through a refrigeration pipeline to form a closed loop; and the second capillary tube is connected with the second evaporator in series through a refrigeration pipeline and then connected with the first capillary tube in parallel through the refrigeration pipeline to be connected into the refrigerant circulating system.

As a preferred solution of the present invention, the solenoid valve is provided with a first outlet and a second outlet which can be controlled respectively.

As a preferred embodiment of the present invention, the inlet of the first capillary communicates with the first outlet, the outlet of the first capillary communicates with the inlet of the first evaporator, and the second outlet communicates with the inlet of the second capillary.

As a preferred embodiment of the present invention, the outlet of the second evaporator communicates with the inlet of the first evaporator.

As a preferred technical solution of the present invention, the electromagnetic valve is electrically connected to a controller, and the controller is electrically connected to a temperature sensor.

The utility model has the following beneficial effects:

1. according to the utility model, the electromagnetic valve, the second capillary tube and the second evaporator are arranged, the electromagnetic valve is provided with the first outlet and the second outlet which can respectively control the switch, the second capillary tube and the second evaporator are connected in series through the refrigeration pipeline and then connected in parallel with the first capillary tube, the electromagnetic valve controls the refrigerant to flow through the first evaporator and the second evaporator at the initial stage of the clothes drying process, and the electromagnetic valve controls the refrigerant to only flow through the first evaporator at the later stage of the clothes drying process, so that the matching of the heat exchange capacity and the load is realized, the refrigeration efficiency is improved, the power consumption of the compressor is reduced, and the energy consumption at the later stage of the drying is further reduced.

2. The temperature control device is electrically connected with a controller through the electromagnetic valve, and the controller is electrically connected with a temperature sensor. In the clothes drying process, when the heating capacity of the condenser is more than the heat absorbed by the evaporator, the temperature sensor monitors that the temperature of the system rises to a certain threshold value, and the electromagnetic valve controls the first evaporator and the second evaporator to simultaneously start working, so that the compressor is prevented from being shut down due to overhigh exhaust temperature, and the working efficiency of the clothes dryer is improved.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 1 is a system diagram of the background art of the present invention;

FIG. 2 is a system diagram according to a first embodiment of the present invention;

FIG. 3 is a system diagram of a second embodiment of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-drying chamber, 2-circulating fan, 3-air channel, 4-compressor, 5-condenser, 6-electromagnetic valve, 601-first outlet, 602-second outlet, 7-first capillary tube, 8-first evaporator, 9-second capillary tube, 10-second evaporator, 11-controller, 12-temperature sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Example one

Referring to fig. 2, the present invention is a dual-circulation cooling system for a heat pump type clothes dryer, including a drying chamber 1, a circulation fan 2, an air duct 3 and a refrigerant circulation system, wherein the drying chamber 1, the circulation fan 2 and the refrigerant circulation system are communicated through the air duct 3. The refrigerant circulating system comprises a compressor 4, a condenser 5, an electromagnetic valve 6, a first capillary tube 7, a second capillary tube 9, a first evaporator 8 and a second evaporator 10; the compressor 4, the condenser 5, the electromagnetic valve 6, the first capillary tube 7 and the first evaporator 8 are sequentially communicated in series through a refrigeration pipeline to form a closed loop; the second capillary 9 and the second evaporator 10 are connected in series through a refrigeration pipeline, and then are connected in parallel with the first capillary 7 through the refrigeration pipeline to be connected into a refrigerant circulating system.

The electromagnetic valve 6 is provided with a first outlet 601 and a second outlet 602 which can be controlled respectively, the inlet of the first capillary 7 is communicated with the first outlet 601, the outlet of the first capillary 7 is communicated with the inlet of the first evaporator 8, the second outlet 602 is communicated with the inlet of the second capillary 9, and the outlet of the second evaporator 10 is communicated with the inlet of the first evaporator 9.

One specific application of this embodiment is: at the initial stage of the clothes drying process, the compressor 4 in the refrigerant circulating system is started, and the refrigerant is radiated by the condenser 6 and enters the electromagnetic valve 6. The second outlet 602 of the solenoid valve 6 is opened and the first outlet 601 is closed, and the refrigerant returns to the compressor 4 after passing through the second evaporator 10 and the first evaporator 8 in sequence through the second capillary tube 9. In the air duct 3, the circulating fan 2 is started to form circulating air in the air duct 3, the circulating air takes moisture from clothes in the drying chamber 1 to become humid air, the humid air flows into the first evaporator 8 and the second evaporator 10, and the first evaporator 8 and the second evaporator 10 cool and condense the moisture in the humid air into water drops to be discharged. The dehumidified air is heated again by the condenser 5, flows into the drying chamber 1, takes moisture from the laundry again to form humid air, and flows into the first evaporator 8 and the second evaporator 10 again to be condensed and dehumidified. At the initial stage of drying clothes, the load of the system is large, the first evaporator 8 and the second evaporator 10 work together, and the refrigerating capacity of the compressor 4 is fully exerted to dehumidify and condense water.

After the clothes are dried for a period of time, the moisture content of the clothes in the drying chamber 1 is reduced, at the moment, the load of the wet air flowing through the evaporator is reduced, at the stage, the compressor 4 continues to operate, the refrigerant is radiated by the condenser 5 and enters the electromagnetic valve 6, the second outlet 602 of the electromagnetic valve 6 is closed, the first outlet 601 is opened, and the refrigerant enters the first evaporator 8 through the first capillary tube 7, evaporates and absorbs heat and then returns to the compressor 4. In the air duct 3, moisture in the humid air is cooled and condensed into water by the evaporator after the humid air exchanges heat with the first evaporator 8. The dehumidified air is heated again by the condenser 5 and sent into the drying chamber 1 of the dryer, and the humid air, which again absorbs moisture from the laundry, is sent back to the first evaporator 8. During the second half of drying, only first evaporimeter 8 carries out evaporation refrigeration, and the heat transfer capacity and the load phase-match of evaporimeter have improved refrigeration efficiency, reduce 4 consumptions of compressor, and then reduce the energy consumption in the later stage of drying.

Example two

Referring to fig. 3, the solenoid valve 6 is electrically connected to a controller 11, and the controller is electrically connected to a temperature sensor 12. In the clothes drying process, the heating capacity of the condenser 5 is more than the heat absorbed by the evaporator, at the moment, when the temperature sensor 12 monitors that the temperature of the system rises to a certain threshold value, the electromagnetic valve 6 controls the first evaporator 8 and the second evaporator 10 to work simultaneously, the compressor 4 is prevented from being shut down due to overhigh exhaust temperature, and the work efficiency of the clothes dryer is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A heat pump dryer dual cycle refrigeration system, comprising: the drying chamber (1), the circulating fan (2), the air duct (3) and the refrigerant circulating system are communicated through the air duct (3);

the refrigerant circulating system comprises a compressor (4), a condenser (5), an electromagnetic valve (6), a first capillary tube (7), a second capillary tube (9), a first evaporator (8) and a second evaporator (10); the compressor (4), the condenser (5), the electromagnetic valve (6), the first capillary tube (7) and the first evaporator (8) are sequentially communicated in series through a refrigeration pipeline to form a closed loop; and the second capillary tube (9) and the second evaporator (10) are connected in series through a refrigeration pipeline and then connected in parallel with the first capillary tube (7) through the refrigeration pipeline to be connected into a refrigerant circulating system.

2. A heat pump dryer dual cycle refrigeration system according to claim 1, wherein said solenoid valve (6) is provided with a first outlet (601) and a second outlet (602) that are separately controllable.

3. A heat pump dryer dual cycle refrigeration system according to claim 2, wherein the inlet of the first capillary (7) communicates with a first outlet (601), the outlet of the first capillary (7) communicates with the inlet of the first evaporator (8), and the second outlet (602) communicates with the inlet of the second capillary (9).

4. A heat pump dryer dual cycle refrigeration system according to claim 3, wherein an outlet of said second evaporator (10) communicates with an inlet of said first evaporator (8).

5. A heat pump dryer dual cycle refrigeration system according to claim 1, wherein said solenoid valve (6) is electrically connected to a controller (11), said controller being electrically connected to a temperature sensor (12).