WO2019141056A1 - 一种热泵干衣机及控制方法 - Google Patents

一种热泵干衣机及控制方法 Download PDF

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Publication number
WO2019141056A1
WO2019141056A1 PCT/CN2018/124200 CN2018124200W WO2019141056A1 WO 2019141056 A1 WO2019141056 A1 WO 2019141056A1 CN 2018124200 W CN2018124200 W CN 2018124200W WO 2019141056 A1 WO2019141056 A1 WO 2019141056A1
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WIPO (PCT)
Prior art keywords
heat pump
humidity
temperature
evaporator
condenser
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PCT/CN2018/124200
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English (en)
French (fr)
Inventor
李文伟
邢本驸
衣少磊
张新华
潘继辉
艾磊磊
Original Assignee
青岛海尔滚筒洗衣机有限公司
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Publication of WO2019141056A1 publication Critical patent/WO2019141056A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/48—Control of the energy consumption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/26—Heat pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention belongs to the field of clothes dryers, and in particular to a heat pump dryer and a control method thereof.
  • the existing heat pump dryer works on the principle that the evaporator end of the heat pump system absorbs the surrounding heat and dissipates heat at the condenser end.
  • the fan drives the air circulation through the evaporator, the condenser and the drying cylinder.
  • the air is cooled at the evaporator end to precipitate moisture and become dry and cold air.
  • the dry and cold air is heated through the condenser end to become dry hot air.
  • the dry hot air enters the drying cylinder, and the moisture that takes away the clothes becomes hot and humid air.
  • the hot and humid air flows through the evaporator, and is cooled to form a circulating air path, and the heat is reused.
  • the heat pump dryer has a great improvement in energy consumption compared to the conventional electric dryer, the heat pump dryer operates more power-saving, and the low-temperature drying also has less damage to the clothes.
  • the amount of displacement of the compressor itself due to the amount of displacement of the compressor itself, it affects the working efficiency of the dryer system and the condenser of the drying system.
  • the evaporator can not completely condense the moisture in the hot and humid air, on the one hand, it affects the heat supplied to the condenser, on the other hand, the air passing through the condenser is not dry enough, and the heat is required to be heated, and the temperature of the circulating wind rises slowly.
  • the water in the clothes cannot be quickly converted into water vapor, and the time for drying the clothes is increased, which cannot meet the requirements for the user to quickly dry. If the degree of drying of the air passing through the condenser can be increased, the heating rate can be increased to a certain extent, and the drying efficiency can be improved.
  • the present invention has been made in view of the above.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a heat pump dryer and a control method thereof.
  • the heat pump dryer of the invention has an auxiliary cooling device, can accelerate the moisture in the condensing circulation wind, and is beneficial to accelerate the heating rate; further, it has an auxiliary heating device, which can further improve the drying efficiency at a lower energy consumption. .
  • a first object of the present invention is to provide a heat pump dryer comprising a circulation air duct and a heat pump system, the heat pump system including a compressor, a condenser, a throttle device, and an evaporator in sequence, at least the evaporator and the condenser are located in the circulation In the air duct, an auxiliary cooling device is further disposed in the circulating air passage, and the auxiliary cooling device is located at least on one side of the evaporator to assist in condensing the circulating gas.
  • the auxiliary cooling device includes a first passage through which the condensing medium passes and a second passage through which the circulating gas passes in the circulating air passage, and the circulating gas passes through the second passage to exchange heat with the condensing medium in the first passage, and the circulating gas The water in it is condensed;
  • the first passage is disposed perpendicular to a central axis of the circulation duct, and the second passage is disposed in parallel with a central axis of the circulation duct.
  • a condensing medium inlet and a condensing medium outlet are disposed on the first passage through which the condensing medium passes, and the condensing medium inlet communicates with the condensing medium into the pipeline, and the condensing medium outlet communicates with the condensing medium discharge conduit.
  • the circulating air duct is further provided with a first humidity detecting device and/or a first temperature detecting device, and the first humidity detecting device and/or the first temperature detecting device are disposed in the evaporator and the condenser. Between the detection of the humidity and / or temperature on the back side of the evaporator; or on both sides of the evaporator, the humidity and / or temperature of the front and rear sides of the evaporator are detected.
  • the circulating air passage is further provided with an auxiliary heating device, and the auxiliary heating device is located at a front side and/or a rear side of the condenser to assist in heating the circulating gas in the circulation air passage;
  • the auxiliary heating device comprises a gas heating device, and/or an electric heating device.
  • the circulating air duct is further provided with a second temperature detecting device and/or a second humidity detecting device, the second temperature detecting device and/or the second humidity detecting along the flow direction of the circulating wind.
  • the apparatus is disposed downstream of the condenser to detect temperature and/or humidity on the rear side of the condenser; or on both sides of the condenser to detect temperature and/or humidity on the front and rear sides of the condenser.
  • a further solution further comprising a control device, wherein the auxiliary cooling device and the auxiliary heating device are respectively connected to the control device, the first temperature detecting device and/or the first humidity detecting device, the second temperature detecting device and/or The second humidity detecting devices are respectively connected to the control device.
  • a second object of the present invention is to provide a control method of a heat pump dryer according to the above aspect, wherein when the heat pump dryer performs a drying process, the heat pump system operates, and the evaporator condenses the circulating gas in the circulation duct; During the time period, when the humidity and/or temperature of the circulating gas after the condensation of the evaporator is higher than a preset value, the auxiliary cooling device starts to work to assist the condensation circulating gas;
  • the heat pump dryer performs a rapid drying procedure that includes: the heat pump system, the auxiliary cooling device, and/or the auxiliary heating device simultaneously start working.
  • control device controls the auxiliary cooling device to start working according to the value of the humidity and/or temperature detected by the first humidity detecting device and/or the first temperature detecting device or the difference in the difference;
  • the control device determines that the value of the humidity detected by the first humidity detecting device is greater than a preset value or the difference in the humidity changes is less than a preset value within a certain period of time, the auxiliary cooling device is controlled to start working.
  • control device controls the auxiliary heating device to start working according to the value or difference value of the temperature and/or humidity detected by the second temperature detecting device and/or the second humidity detecting device;
  • the control device determines that the temperature detected by the second temperature detecting device is less than a preset value or the difference in temperature is less than a preset value within a certain time, the auxiliary heating device is controlled to start working.
  • the present invention has the following beneficial effects compared with the prior art:
  • the heat pump dryer of the present invention is provided with an auxiliary cooling device, which works when the evaporator is insufficiently condensed, can accelerate the moisture in the condensing circulation wind, is beneficial to speed up the cooling rate, and is also beneficial for accelerating the heating rate of the downstream condenser;
  • the heat pump dryer of the present invention further has an auxiliary heating device that operates when the condenser is insufficiently heated, and can further improve the drying efficiency at a lower energy consumption.
  • the auxiliary cooling device and the auxiliary heating device of the invention can be independently controlled, can work at the same time, jointly improve the drying efficiency of the dryer, form a rapid drying mode, or can work separately, respectively, together with the heat pump system, can reduce Energy consumption, at the same time, can improve drying efficiency and meet user needs, especially for heat pump dryers in low temperature environments.
  • Figure 1 is a schematic view showing the structure of a heat pump dryer of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the embodiment provides a heat pump dryer including a circulation duct 2 and a heat pump system.
  • the heat pump system includes a compressor 3, a condenser 4, a throttle device 5, and an evaporator 6 that are sequentially connected, at least The evaporator 6 and the condenser 4 are located in the circulation duct 2, and the circulation duct 2 is further provided with an auxiliary cooling device 7, which is located at least on one side of the evaporator 6, and assists in condensing the circulating gas. .
  • the heat pump dryer includes a housing and a drum 1, which is a space for accommodating the processed laundry, located inside the housing.
  • the drum 1 is in communication with the circulation duct 2, and the circulating gas in the circulation duct 2 enters the drum 1 to exchange heat with the laundry to achieve the purpose of drying the laundry.
  • the compressor 3, the condenser 4, the throttling device 5, and the evaporator 6 of the heat pump system are sequentially connected by a copper pipe for the medium therein to flow.
  • the components of the heat pump system may all be located in the circulation duct 2 or partially located in the circulation duct 2, at least the condenser 4 and the evaporator 6 being located in the circulation duct 2.
  • the condenser 4 is a heating member in the dryer circulation duct 2 to supply heat to the circulating air; the evaporator 6: a refrigerating member in the dryer circulation air passage, condenses the water vapor in the circulating air into water.
  • the compressor 3 is for compressing a refrigerant and is a power supply unit for circulating a refrigerant.
  • the circulation duct 2 includes a rear duct 22 that communicates with the air inlet of the drum 1, and a front duct 21 that communicates with the exhaust port of the drum 1.
  • the condenser 4 is adjacent to the side of the rear air duct 22, and the evaporator 6 is adjacent to the side of the front air duct 21.
  • a fan 9 is further provided in the circulation duct 2 to power the wind of the circulation duct 2, and is disposed downstream of the condenser 4, and discharges the dry heat control after the condenser 4 is heated into the drum 1.
  • a belt 10 is disposed outside the drum 1, and the motor 11 drives the drum 1 to rotate by the belt 10, and the laundry in the drum 1 is tumbling; at the same time, the fan 9 discharges the dry hot air to the drum 1 to dry the laundry.
  • an auxiliary cooling device 7 is also provided in the circulation duct 2.
  • the auxiliary cooling device 7 is used to start the operation when the condensation capacity of the evaporator 6 is insufficient to accelerate the moisture in the condensing circulation wind, thereby improving the cooling efficiency, and also to accelerate the temperature increase rate of the downstream evaporator 6.
  • Auxiliary cooling means 7 may be arranged upstream of evaporator 6 in the direction of circulation of the circulating gas, or downstream of it, or both upstream and downstream to achieve a better condensation effect.
  • the auxiliary cooling device 7 can be any element capable of functioning as a water vapor in the condensing circulating air, and can be, for example, various heat exchangers or a common condensing member.
  • the specific structure and installation manner of the auxiliary cooling device 7 can be specifically set according to the type of the dryer and the specifications of the circulation duct 2, as long as it can function to assist the water vapor in the condensing circulation wind.
  • the auxiliary cooling device 7 includes a first passage through which the condensing medium passes and a second passage through which the circulating gas in the circulation duct 2 passes, and the circulating gas passes through the second passage and the first passage The condensing medium in the heat exchange is performed, and the moisture in the circulating gas is condensed.
  • the condensing medium described in the present scheme is a medium capable of generating heat exchange and having a temperature lower than that of moist hot air; for example, it may be tap water, which may be low temperature water or air.
  • the first channel and the second channel may be provided in plurality, and the two are spaced apart to increase the heat exchange area of the circulating gas and improve the condensation efficiency.
  • the auxiliary cooling device 7 may be a surface cooler, and a second passage is formed between the first passages through which the condensing medium passes, that is, the circulating gas passes through the outer surface of the first passage for heat exchange. In this way, a good condensation effect can be achieved while reducing the space occupying the circulation duct 2 .
  • the first passage is disposed perpendicular to a central axis of the circulation duct 2, and the second passage is disposed in parallel with a central axis of the circulation duct 2.
  • the first passage through which the condensing medium passes is disposed perpendicular to the central axis of the circulation duct 2 in which it is located, which can increase the heat exchange area; the second passage is arranged in parallel with the central axis of the circulation duct 2, and the ends are continuous, so that the circulation The wind can enter the second passage of the auxiliary cooling device 7 without any hindrance to condense again, without affecting the flow direction of the circulating wind, and does not generate corners and dead angles, thereby ensuring safety and achieving heat exchange condensation with maximum efficiency.
  • a condensing medium inlet and a condensing medium outlet are provided on the first passage through which the condensing medium passes, and the condensing medium inlet communicates with the condensing medium inlet conduit 12, and the condensing medium outlet communicates with the condensing medium discharge conduit 13.
  • the condensing medium entering the pipe 12 may be an inlet pipe connected to the faucet 14, and the condensing medium discharge pipe 13 may be a drain pipe.
  • the water enters the first passage from the inlet pipe, exchanges heat with the circulating gas in the second passage, and is discharged from the drain pipe to form a conduit for the condensing medium to complete the condensation process.
  • the condensing medium inlet pipe 12 and the condensing medium discharge pipe 13 may be respectively connected to the cooling device to form a condensing medium circulation line.
  • the condensing medium is cooled, and then enters the first passage of the auxiliary cooling device 7 through the condensing medium into the pipe 12 for heat exchange and temperature rise, and then returns to the cooling device, so that it can be recycled to save the condensing medium.
  • the auxiliary cooling device 7 is disposed at the front or the rear of the evaporator 6 for assisting in condensing the water vapor in the circulating air when the condenser 6 has insufficient condensation capacity.
  • the circulating air channel 2 is further provided with a first humidity detecting device 15 and/or a first temperature detecting device, the first humidity detecting device 15 and / or the first temperature detecting means is disposed between the evaporator 6 and the condenser 4 to detect the humidity and / or temperature on the rear side of the evaporator 6; or on both sides of the evaporator 6, detecting the front side and the rear of the evaporator 6 Side humidity and / or temperature.
  • a control device is also included, and the auxiliary cooling device 7, the first temperature detecting device and/or the first humidity detecting device 15 are respectively connected to the control device.
  • the moist heat circulating gas discharged from the drum 1 passes through the evaporator 6 and is condensed, the humidity is lowered, and the corresponding temperature is also lowered.
  • the humidity detecting means can be used to detect the humidity of the cooled gas, the temperature of the cooled gas can be detected, or the humidity detecting means and the temperature detecting means can be simultaneously used to achieve a more accurate judgment.
  • the humidity detecting device may be a humidity sensor
  • the temperature detecting device may be a temperature sensor
  • the embodiment further provides a control method of the heat pump dryer.
  • the heat pump dryer performs the drying process, the heat pump system operates, and the evaporator 6 condenses the circulating gas in the circulation duct 2;
  • the auxiliary cooling device 7 starts to operate to assist in condensing the circulating gas.
  • control device determines whether to control the auxiliary cooling device 7 to start working according to the value of the humidity and/or temperature detected by the first humidity detecting device 15 and/or the first temperature detecting device or the difference in the difference.
  • step S2 includes but is not limited to the following:
  • a first humidity detecting device 15 is disposed in the circulation duct 2, and the first humidity detecting device 15 is disposed between the evaporator 6 and the condenser 4 to detect the humidity on the rear side of the evaporator 6.
  • the control device determines that the cooling capacity of the evaporator 6 is insufficient, and then controls the auxiliary cooling device 7 to start working.
  • This program is simple to set up and easy to implement.
  • a first humidity detecting device 15 is provided upstream and downstream of the evaporator 6, and the humidity of the front side and the rear side of the evaporator 6 is detected. If the control device determines that the difference in the detected humidity of the upstream humidity detecting device and the downstream humidity detecting device is lower than a preset value within a certain period of time, the control device determines that the cooling capacity of the evaporator 6 is insufficient, and then controls the auxiliary cooling device 7 to start operating. The accuracy of the detection of this scheme is higher.
  • a first temperature detecting device is disposed in the circulation duct 2, and the first temperature detecting device is disposed between the evaporator 6 and the condenser 4 to detect the temperature of the rear side of the evaporator 6. For a certain period of time, if the value of the detected temperature is higher than the preset value, the control device determines that the cooling capacity of the evaporator 6 is insufficient, and then controls the auxiliary cooling device 7 to start operating.
  • a first temperature detecting means is provided upstream and downstream of the evaporator 6, and the temperatures of the front side and the rear side of the evaporator 6 are detected. If the control device determines that the difference in temperature detected by the upstream temperature detecting device and the downstream temperature detecting device is lower than a preset value within a certain period of time, the control device determines that the cooling capacity of the evaporator 6 is insufficient, and then controls the auxiliary cooling device 7 to start operating.
  • the first humidity detecting device 15 and the first temperature detecting device are disposed downstream of the evaporator 6, and the temperature and humidity downstream thereof are simultaneously detected. During a certain period of time, if the detected humidity value is higher than the preset value or the temperature value is higher than the preset value, the control device determines that the cooling capacity of the evaporator 6 is insufficient, and then controls the auxiliary cooling device 7 to start working.
  • the control device determines that the value of the humidity detected by the first humidity detecting device 15 is greater than a preset value or the difference in humidity changes is less than a preset value within a certain period of time, the auxiliary cooling device 7 is controlled to start operating.
  • the auxiliary cooling device 7 is disposed downstream of the evaporator 6, and the first humidity detecting device 15 and/or the first temperature detecting device are disposed in the evaporator 6 and the auxiliary cooling device 7 between.
  • the control method of the heat pump dryer of the scheme comprises the following steps:
  • step S2 when the working device reaches a certain time, if the control device determines that the value of the humidity downstream of the evaporator 6 is greater than a preset value, or the difference between the humidity changes of the upstream and downstream of the evaporator 6 is less than a preset value, then proceeds to step S3; Step S5;
  • the auxiliary cooling device 7 is activated to perform auxiliary condensation
  • this embodiment is further defined in the first embodiment.
  • the circulating air duct 2 of the present embodiment is further provided with an auxiliary heating device 8 , and the auxiliary heating device 8 is located in the condenser 4 .
  • the front side and/or the rear side assists in heating the circulating gas in the circulation duct 2.
  • the auxiliary heating device 8 of the present embodiment may be disposed upstream of the condenser 4, or disposed downstream of the condenser 4, or may be disposed upstream and downstream, which can accelerate the heating speed of the circulating air and enhance the entry into the drum 1. Circulating wind temperature, improving drying efficiency, saving time and improving user experience.
  • the auxiliary heating device 8 of the present solution may include a gas heating device, and/or an electric heating device, or other device capable of generating heat to heat the circulating gas.
  • the auxiliary heating device 8 can operate when the heating capacity of the condenser 4 is insufficient, accelerates the heating speed, and has the effect of quickly drying the laundry.
  • the circulation air duct 2 is further provided with a second temperature detecting device 16 and/or a second humidity detecting device, along the flow direction of the circulating wind, the second temperature detecting device 16 and/or a second humidity detecting device is disposed downstream of the condenser 4 to detect temperature and/or humidity on the rear side of the condenser 4;
  • the condenser 4 is disposed on both sides of the condenser 4 to detect the temperature and/or humidity of the front side and the rear side of the condenser 4.
  • auxiliary heating device 8 the second temperature detecting device 16, and/or the second humidity detecting device are respectively connected to the control device.
  • the circulating gas condensed by the evaporator 6 and the auxiliary cooling device 7 becomes dry and cold air, and the temperature is low. After being heated by the condenser 4, it becomes dry hot air, and then sent back to the drum 1 of the dryer, and baked. Dry clothes.
  • a temperature detecting device it is preferable to use to detect the temperature of the gas heated by the condenser 4, or to detect the humidity of the heated gas, or to simultaneously use the humidity detecting device and the temperature detecting device to achieve a more accurate judgment.
  • the temperature detecting device may be a temperature sensor
  • the humidity detecting device may be a humidity sensor
  • the embodiment further includes a control method of the heat pump dryer, including: the control device controls the auxiliary according to the value or difference value of the temperature and/or humidity detected by the second temperature detecting device 16 and/or the second humidity detecting device.
  • the heating device 8 starts to work;
  • the control device determines that the temperature detected by the second temperature detecting device 16 is less than a preset value or the difference in temperature is less than a preset value within a certain period of time, the auxiliary heating device 8 is controlled to start operating.
  • control method specifically includes:
  • control device determines whether to control the auxiliary heating device 8 to start working according to the value of the temperature and/or humidity detected by the second temperature detecting device 16 and/or the second humidity detecting device or the difference in the difference.
  • step S2 includes but is not limited to the following:
  • Solution 1 A second temperature detecting device 16 is disposed in the circulation duct 2 and installed downstream of the condenser 4. After the heat pump dryer operates for a certain period of time, if the value of the detected temperature is lower than the preset value, the control device determines that the heating capacity of the condenser 4 is insufficient, and then controls the auxiliary heating device 8 to start working. This program is simple to set up and easy to implement.
  • Solution 2 A second temperature detecting device 16 is provided upstream and downstream of the evaporator 6, and the temperatures of the front side and the rear side of the condenser 4 are detected. If the control device determines that the difference in temperature detected by the upstream temperature detecting device and the downstream temperature detecting device is lower than a preset value within a certain period of time, the control device determines that the heating capacity of the condenser 4 is insufficient, and then controls the auxiliary heating device 8 to start operating. The accuracy of the detection of this scheme is higher.
  • the second temperature detecting device 16 and the second humidity detecting device are disposed downstream of the evaporator 6, while detecting the temperature and humidity downstream thereof. During a certain period of time, if the detected humidity value is higher than the preset value or the temperature value is lower than the preset value, the control device determines that the heating capacity of the condenser 4 is insufficient, and then controls the auxiliary heating device 8 to start working.
  • the auxiliary cooling device 7 and the auxiliary heating device 8 can be used as a supplement to the heat pump system, and when the function of the evaporator 6 or the condenser 4 is insufficient, the operation is started; the work can be started simultaneously with the heat pump system, and the assistance can be greatly accelerated from the beginning. Drying efficiency can be used as a method of rapid drying.
  • a rapid drying procedure can be set up on the heat pump dryer. Under this procedure, the auxiliary heating device 8 and the heat pump system work simultaneously.
  • the control methods include:
  • control device controls the heat pump system and the auxiliary heating device 8 to start working at the same time, and after a certain time, the rapid drying process is completed.
  • auxiliary heating device 8, the auxiliary cooling device 7, and the heat pump system work simultaneously, and the control method includes:
  • control device controls the heat pump system, the auxiliary heating device 8, and the auxiliary cooling device 7 to start working at the same time, and after a certain time, the rapid drying process is completed.

Abstract

本发明公开了一种热泵干衣机，包括循环风道和热泵系统，热泵系统包括依次连通的压缩机、冷凝器、节流装置以及蒸发器，至少蒸发器和冷凝器位于循环风道内，所述的循环风道中还设有辅助冷却装置，所述的辅助冷却装置至少位于蒸发器的一侧，辅助冷凝循环气体。本发明的热泵干衣机带有辅助冷却装置，能够加快冷凝循环风中的水分，有利于加快升温速率；进一步的，还具有辅助加热装置，能够在较低的能源消耗下进一步提高烘干效率。

Description

一种热泵干衣机及控制方法 技术领域
本发明属于干衣机领域，具体地说，涉及一种热泵干衣机及控制方法。
背景技术
现有的热泵干衣机的工作原理为：热泵系统的蒸发器端吸收周围的热量，在冷凝器端散发热量。风扇驱动空气循环流经蒸发器、冷凝器和烘干筒，空气在蒸发器端被冷却，析出水分，变为干冷的空气，干冷的空气流经冷凝器端被加热，变为干热的空气，干热的空气进入干衣筒内，带走衣物的湿气变为湿热的空气，湿热的空气又流经蒸发器，被冷却析出水分形成循环风路，热量重复利用。
当前，因为热泵干衣机相比传统电加热式干衣机在能耗上有很大的改进，热泵干衣机工作时更省电，低温烘干对衣物损伤也更小。但是由于受制于压缩机本身排气量的多少，影响干衣系统蒸发器和冷凝器的工作效率。蒸发器不能完全冷凝湿热空气中的水分，一方面影响其对冷凝器供给的热量，另一方面也使经过冷凝器的空气不够干燥，需要更好的热量进行加热，循环风的温度上升较慢，衣物中的水不能快速的转化为水蒸气，同时增加了烘干衣物的时间，不能满足用户需要快速烘干的要求。倘若能够提高经过冷凝器的空气的干燥程度，在一定程度上也能够加快加热速率，提高烘干效率。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种热泵干衣机及控制方法。本发明的热泵干衣机带有辅助冷却装置，能够加快冷凝循环风中的水分，有利于加快升温速率；进一步的，还具有辅助加热装置，能够在较低的能源消耗下进一步提高烘干效率。
为解决上述技术问题，本发明采用技术方案的基本构思是：
本发明的第一目的是提供一种热泵干衣机，包括循环风道和热泵系统，热泵系统包括依次连通的压缩机、冷凝器、节流装置以及蒸发器，至少蒸发器和冷凝器位于循环风道内，所述的循环风道中还设有辅助冷却装置，所述的辅助冷却装置至少位于蒸发器的一侧，辅助冷凝循环气体。
所述的辅助冷却装置包括供冷凝介质通过的第一通道和供循环风道中循环气体经过的第 二通道，循环气体经过第二通道时，与第一通道中的冷凝介质进行热交换，循环气体中的水分被冷凝；
优选的，所述的第一通道与循环风道的中心轴线垂直设置，所述的第二通道与循环风道的中心轴线平行设置。
进一步的方案，供冷凝介质通过的第一通道上设有冷凝介质进口和冷凝介质出口，冷凝介质进口与冷凝介质进入管道连通，冷凝介质出口与冷凝介质排出管道连通。
进一步的方案，所述的循环风道中还设置有第一湿度检测装置和/或第一温度检测装置，所述的第一湿度检测装置和/或第一温度检测装置设置在蒸发器与冷凝器之间，检测蒸发器后侧的湿度和/或温度；或者设置在蒸发器的两侧，检测蒸发器前侧和后侧的湿度和/或温度。
进一步的方案，所述的循环风道中还设有辅助加热装置，所述的辅助加热装置位于冷凝器的前侧和/或后侧，辅助加热循环风道中的循环气体；
优选的，所述的辅助加热装置包括燃气加热装置，和/或电加热装置。
进一步的方案，所述的循环风道中还设置有第二温度检测装置和/或第二湿度检测装置，沿着循环风的流动方向，所述的第二温度检测装置和/或第二湿度检测装置设置在冷凝器的下游，检测冷凝器后侧的温度和/或湿度；或者设置在冷凝器的两侧，检测冷凝器前侧和后侧的温度和/或湿度。
进一步的方案，还包括控制装置，所述的辅助冷却装置、辅助加热装置分别与控制装置连接，所述的第一温度检测装置和/或第一湿度检测装置、第二温度检测装置和/或第二湿度检测装置分别与控制装置连接。
本发明的第二目的是提供一种根据上述方案所述的热泵干衣机的控制方法，热泵干衣机执行烘干程序时，热泵系统工作，蒸发器冷凝循环风道中的循环气体；在一定时间内，经蒸发器的冷凝作用后的循环气体的湿度和/或温度高于预设值时，辅助冷却装置开始工作，辅助冷凝循环气体；
或者，热泵干衣机执行快速烘干程序，所述的快速烘干程序包括：热泵系统、辅助冷却装置和/或辅助加热装置同时开始工作。
进一步的方案，控制装置根据第一湿度检测装置和/或第一温度检测装置检测到的湿度和/或温度的值或者变化差值，控制辅助冷却装置开始工作；
优选的，当一定时间内，控制装置判断第一湿度检测装置检测到的湿度的值大于预设值， 或者湿度的变化差值小于预设值时，控制辅助冷却装置开始工作。
进一步的方案，控制装置根据第二温度检测装置和/或第二湿度检测装置检测到的温度和/或湿度的值或者差值，控制辅助加热装置开始工作；
优选的，当一定时间内，控制装置判断第二温度检测装置检测到的温度小于预设值，或者温度的差值小于预设值时，控制辅助加热装置开始工作。
采用上述技术方案后，本发明与现有技术相比具有以下有益效果：
1、本发明的热泵干衣机带有辅助冷却装置，在蒸发器冷凝不足时工作，能够加快冷凝循环风中的水分，有利于加快冷却速率，也有利于加快下游冷凝器的加热速率；
2、本发明的热泵干衣机进一步的还具有辅助加热装置，在冷凝器加热不足时工作，能够在较低的能源消耗下进一步提高烘干效率。
3、本发明的辅助冷却装置和辅助加热装置均能够独立控制，可以同时工作，共同提高干衣机的烘干效率，形成快速烘干模式；也可以单独工作，分别配合热泵系统，既能够降低能源消耗，又同时能够提高烘干效率，满足用户需求，尤其适合低温环境下的热泵干衣机。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
附图作为本发明的一部分，用来提供对本发明的进一步的理解，本发明的示意性实施例及其说明用于解释本发明，但不构成对本发明的不当限定。显然，下面描述中的附图仅仅是一些实施例，对于本领域普通技术人员来说，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。在附图中：
图1是本发明的热泵干衣机的结构示意图。
图中：1滚筒，2循环风道，21前风道，22后风道，3压缩机，4冷凝器，5节流装置，6蒸发器，7辅助冷却装置，8辅助加热装置，9风扇，10皮带，11电机，12冷凝介质进入管道，13冷凝介质排出管道，14水龙头，15第一湿度检测装置，16第二温度检测装置。
需要说明的是，这些附图和文字描述并不旨在以任何方式限制本发明的构思范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附 图，对实施例中的技术方案进行清楚、完整地描述，以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要说明的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一
如图1所示，本实施例提供一种热泵干衣机，包括循环风道2和热泵系统，热泵系统包括依次连通的压缩机3、冷凝器4、节流装置5以及蒸发器6，至少蒸发器6和冷凝器4位于循环风道2内，所述的循环风道2中还设有辅助冷却装置7，所述的辅助冷却装置7至少位于蒸发器6的一侧，辅助冷凝循环气体。
热泵干衣机包括壳体和滚筒1，滚筒1是容纳被处理的衣物的空间，位于壳体内。滚筒1与循环风道2连通，循环风道2中的循环气体进入滚筒1内与衣物进行热交换以达到烘干衣物的目的。热泵系统的压缩机3、冷凝器4、节流装置5以及蒸发器6依次通过铜管连通，供其内的介质流动。
热泵系统的部件可以都位于循环风道2中，也可以部分位于循环风道2中，至少冷凝器4和蒸发器6位于循环风道2中。冷凝器4是干衣机循环风道2中的加热部件，为循环风提供热量；蒸发器6：干衣机循环风路中的制冷部件，将循环风中的水蒸气冷凝成水。压缩机3用于压缩冷媒，是冷媒循环工作的动力供给单元。
循环风道2包括与滚筒1的进风口连通的后风道22、与滚筒1的排风口连通的前风道21。冷凝器4靠近后风道22一侧，蒸发器6靠近前风道21一侧。循环风道2中还设有风扇9，为循环风道2的风提供动力，设置在冷凝器4的下游，将冷凝器4加热后的干热控制排到滚筒1内。滚筒1外部设置有皮带10，电机11通过皮带10带动滚筒1转动，滚筒1内的衣物翻滚；同时风扇9将干热风排到滚筒1中烘干衣物。
本方案中，在循环风道2中还设置了辅助冷却装置7。该辅助冷却装置7用于在蒸发器6冷凝能力不足时，启动工作以便于加快冷凝循环风中的水分，提高冷却效率；同时也有利于加快下游的蒸发器6的升温速率。
沿着循环气体流动的方向，辅助冷却装置7可以设置在蒸发器6的上游，也可以设置在其下游，也可以在上下游都设置，以达到更好的冷凝的效果。
辅助冷却装置7可以为任何能够起到冷凝循环风中的水蒸汽作用的元件，例如可以为各种换热器，也可以为普通的冷凝部件。辅助冷却装置7的具体结构和安装方式可以根据干衣机的类型、循环风道2的规格具体设置，只要能够起到辅助冷凝循环风中水蒸汽的作用即可。
作为一种具体的方案，所述的辅助冷却装置7包括供冷凝介质通过的第一通道和供循环风道2中循环气体经过的第二通道，循环气体经过第二通道时，与第一通道中的冷凝介质进行热交换，循环气体中的水分被冷凝。
本方案中所述的冷凝介质是能够产生热交换的、温度低于湿热空气的介质；例如可以是自来水，可以是低温水，也可以是空气。第一通道和第二通道可以设有多个，两者间隔设置，增加循环气体的热交换面积，提高冷凝效率。
更具体的方案，辅助冷却装置7可以为表面式冷却器，供冷凝介质通过的第一通道之间形成第二通道，也就是循环气体经过第一通道的外表面进行热交换。如此，能够在减小占用循环风道2的空间的前提下达到良好的冷凝效果。
优选的方案，所述的第一通道与循环风道2的中心轴线垂直设置，所述的第二通道与循环风道2的中心轴线平行设置。
供冷凝介质通过的第一通道与其所位于的循环风道2的中心轴线垂直设置，可以增大换热面积；第二通道与循环风道2的中心轴线平行设置，且两端贯通，如此循环风可以毫无阻碍的进入辅助冷却装置7的第二通道进行再次冷凝，不会影响循环风的流向，不会产生拐角、死角，既保证安全性，又能最大效率的实现换热冷凝。
进一步的方案，供冷凝介质通过的第一通道上设有冷凝介质进口和冷凝介质出口，冷凝介质进口与冷凝介质进入管道12连通，冷凝介质出口与冷凝介质排出管道13连通。
例如，当冷凝介质为水，冷凝介质进入管道12则可以为与水龙头14连接的进水管，冷凝介质排出管道13则可以为排水管。水从进水管进入第一通道，与第二通道中的循环气体进行热交换后从排水管排出，形成冷凝介质的管路，完成冷凝过程。
或者，冷凝介质进入管道12、冷凝介质排出管道13可以分别与降温装置连接，形成冷凝介质循环管路。在降温装置中，冷凝介质降温，然后通过冷凝介质进入管道12进入辅助冷却装置7的第一通道进行热交换升温，然后再回到降温装置，如此，可以循环利用，节约冷凝介质。
所述辅助冷却装置7设置在蒸发器6的前部或者后部，用于将蒸发器6冷凝能力不足时辅助冷凝循环风中的水蒸气。
进一步的方案，为了实现辅助冷却装置7的自动控制，所述的循环风道2中还设置有第一湿度检测装置15和/或第一温度检测装置，所述的第一湿度检测装置15和/或第一温度检测装置设置在蒸发器6与冷凝器4之间，检测蒸发器6后侧的湿度和/或温度；或者设置在蒸发器6的两侧，检测蒸发器6前侧和后侧的湿度和/或温度。
另外，还包括控制装置，所述的辅助冷却装置7、第一温度检测装置和/或第一湿度检测装置15分别与控制装置连接。
从滚筒1中排出的湿热的循环气体经过蒸发器6后进行冷凝，湿度会降低，相应的温度也会降低。为了判断蒸发器6是否能够充分冷却循环气体，可以采用湿度检测装置检测冷却后的气体湿度，也可以检测冷却后的气体温度，或者同时采用湿度检测装置和温度检测装置以便达到更精确的判断。除了检测冷却后的气体的湿度和/或温度的值作为判断标准，还可以通过计算冷却前和冷却后的湿度和/或温度的差值进行判断，增加判断的准确性。
本方案中，湿度检测装置可以为湿度传感器，温度检测装置可以为温度传感器。
另外，本实施例还提供一种热泵干衣机的控制方法，热泵干衣机执行烘干程序时，热泵系统工作，蒸发器6冷凝循环风道2中的循环气体；在一定时间内，经蒸发器6的冷凝作用后的循环气体的湿度和/或温度高于预设值时，辅助冷却装置7开始工作，辅助冷凝循环气体。
进一步的方案，具体为：
S1，热泵干衣机执行干衣程序，热泵系统工作，蒸发器6冷却循环气体；
S2，工作到一定时间时，控制装置根据第一湿度检测装置15和/或第一温度检测装置检测到的湿度和/或温度的值或者变化差值，判断是否控制辅助冷却装置7开始工作。
具体的，步骤S2的具体方案包括但不限于以下几种：
方案1-1：循环风道2中设置有第一湿度检测装置15，所述的第一湿度检测装置15设置在蒸发器6与冷凝器4之间，检测蒸发器6后侧的湿度。工作一定时间内，若检测的湿度的 值高于预设值，控制装置判断蒸发器6冷却能力不足，则控制辅助冷却装置7开始工作。本方案设置简单，容易实行。
方案1-2：蒸发器6的上游和下游各设有一个第一湿度检测装置15，检测蒸发器6前侧和后侧的湿度。一定时间内，控制装置判断上游湿度检测装置和下游湿度检测装置的检测的湿度的变化差值若低于预设值，控制装置判断蒸发器6冷却能力不足，则控制辅助冷却装置7开始工作。本方案检测的准确率更高。
方案2-1：循环风道2中设置有第一温度检测装置，所述的第一温度检测装置设置在蒸发器6与冷凝器4之间，检测蒸发器6后侧的温度。一定时间内，若检测的温度的值高于预设值，控制装置判断蒸发器6冷却能力不足，则控制辅助冷却装置7开始工作。
方案2-2：蒸发器6的上游和下游各设有一个第一温度检测装置，检测蒸发器6前侧和后侧的温度。一定时间内，控制装置判断上游温度检测装置和下游温度检测装置的检测的温度的变化差值若低于预设值，控制装置判断蒸发器6冷却能力不足，则控制辅助冷却装置7开始工作。
方案3，蒸发器6的下游设有第一湿度检测装置15和第一温度检测装置，同时检测其下游的温度和湿度。工作一定时间内，若检测的湿度的值高于预设值或者温度值高于预设值，控制装置判断蒸发器6冷却能力不足，则控制辅助冷却装置7开始工作。
优选的方案，当一定时间内，控制装置判断第一湿度检测装置15检测到的湿度的值大于预设值，或者湿度的变化差值小于预设值时，控制辅助冷却装置7开始工作。
更进一步的方案，沿着循环风的流动方向，辅助冷却装置7设置在蒸发器6的下游，第一湿度检测装置15和/或第一温度检测装置设置在蒸发器6和辅助冷却装置7之间。
该方案的热泵干衣机的控制方法包括以下步骤：
S1，热泵干衣机执行干衣程序，热泵系统工作，蒸发器6冷却循环气体；
S2，工作到一定时间时，若控制装置判断蒸发器6下游的湿度的值大于预设值，或者蒸发器6上游和下游的湿度的变化差值小于预设值，则进入步骤S3；否则进入步骤S5；
S3，辅助冷却装置7启动，进行辅助冷凝作用；
S4，当控制装置湿度的值小于等于预设值或者变化差值大于等于预设值时，停止辅助冷却装置7；
S5，热泵系统的蒸发器6继续冷却循环气体，并重复步骤S2-S4，直到干衣过程结束。
实施例二
如图1所示，本实施例为实施例一的进一步的限定，为了提高加热速率，本实施的循环风道2中还设有辅助加热装置8，所述的辅助加热装置8位于冷凝器4的前侧和/或后侧，辅助加热循环风道2中的循环气体。
本实施例的辅助加热装置8可以设置在冷凝器4的上游，或者设置在冷凝器4的下游，也可以在上游和下游都设置，能够加快循环风的加热速度，提升进入到滚筒1内的循环风的温度，提高烘干效率，节约时间，提升用户体验。
本方案的辅助加热装置8可以包括燃气加热装置，和/或电加热装置，或者其它能够产生热量加热循环气体的装置。辅助加热装置8可以在冷凝器4的加热能力不足时工作，加快加热速度，起到快速烘干衣物的效果。
进一步的方案，所述的循环风道2中还设置有第二温度检测装置16和/或第二湿度检测装置，沿着循环风的流动方向，所述的第二温度检测装置16和/或第二湿度检测装置设置在冷凝器4的下游，检测冷凝器4后侧的温度和/或湿度；
或者设置在冷凝器4的两侧，检测冷凝器4前侧和后侧的温度和/或湿度。
另外，所述的辅助加热装置8、第二温度检测装置16和/或第二湿度检测装置分别与控制装置连接。
循环风道2中，经过蒸发器6、辅助冷却装置7冷凝后的循环气体变为干冷的空气，温度低，经过冷凝器4加热变为干热风后再送回干衣机的滚筒1内，烘干衣物。本方案中，优选采用温度检测装置检测冷凝器4加热后的气体温度，也可以检测加热后的气体湿度，或者同时采用湿度检测装置和温度检测装置以便达到更精确的判断。
本方案中，温度检测装置可以为温度传感器，湿度检测装置可以为湿度传感器。
另外，本实施例还包括热泵烘干机的控制方法，包括：控制装置根据第二温度检测装置16和/或第二湿度检测装置检测到的温度和/或湿度的值或者差值，控制辅助加热装置8开始工作；
优选的，当一定时间内，控制装置判断第二温度检测装置16检测到的温度小于预设值，或者温度的差值小于预设值时，控制辅助加热装置8开始工作。
进一步的，控制方法具体包括：
S1，热泵干衣机执行干衣程序，热泵系统工作；
S2，工作到一定时间时，控制装置根据第二温度检测装置16和/或第二湿度检测装置检测到的温度和/或湿度的值或者变化差值，判断是否控制辅助加热装置8开始工作。
具体的，步骤S2的优选方案包括但不限于以下几种：
方案1：循环风道2中设置有第二温度检测装置16，安装在位于冷凝器4的下游。热泵干衣机工作一定时间后，若检测的温度的值低于预设值，控制装置判断冷凝器4加热能力不足，则控制辅助加热装置8开始工作。本方案设置简单，容易实行。
方案2：蒸发器6的上游和下游各设有一个第二温度检测装置16，检测冷凝器4前侧和后侧的温度。一定时间内，控制装置判断上游温度检测装置和下游温度检测装置的检测的温度的变化差值若低于预设值，控制装置判断冷凝器4加热能力不足，则控制辅助加热装置8开始工作。本方案检测的准确率更高。
方案3，蒸发器6的下游设有第二温度检测装置16和第二湿度检测装置，同时检测其下游的温度和湿度。工作一定时间内，若检测的湿度的值高于预设值或者温度值低于预设值，控制装置判断冷凝器4加热能力不足，则控制辅助加热装置8开始工作。
辅助冷却装置7和辅助加热装置8可以作为热泵系统的补充，待蒸发器6或冷凝器4的功能不足时启动，进行工作；也可以与热泵系统同时开始工作，由开始便辅助，能够大大加快烘干效率，可以作为快速烘干的方法。
另一种方案，热泵干衣机上可以设置快速烘干程序，在该程序下，辅助加热装置8和热泵系统同时工作，控制方法包括：
S1，热泵干衣机开始工作，用户选择快速烘干模式；
S2，控制装置控制热泵系统、辅助加热装置8同时开始工作，进行一定时间后，完成快速烘干程序。
进一步的方案，辅助加热装置8、辅助冷却装置7和热泵系统同时工作，控制方法包括：
S1，热泵干衣机开始工作，用户选择快速烘干模式；
S2，控制装置控制热泵系统、辅助加热装置8、辅助冷却装置7同时开始工作，进行一定时间后，完成快速烘干程序。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专利的技术人员在不脱 离本发明技术方案范围内，当可利用上述提示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明方案的范围内。

Claims (10)

  1. 一种热泵干衣机，包括循环风道和热泵系统，热泵系统包括依次连通的压缩机、冷凝器、节流装置以及蒸发器，至少蒸发器和冷凝器位于循环风道内，其特征在于，所述的循环风道中还设有辅助冷却装置，所述的辅助冷却装置至少位于蒸发器的一侧，辅助冷凝循环气体。
  2. 根据权利要求1所述的一种热泵干衣机，其特征在于，所述的辅助冷却装置包括供冷凝介质通过的第一通道和供循环风道中循环气体经过的第二通道，循环气体经过第二通道时，与第一通道中的冷凝介质进行热交换，循环气体中的水分被冷凝；
    优选的，所述的第一通道与循环风道的中心轴线垂直设置，所述的第二通道与循环风道的中心轴线平行设置。
  3. 根据权利要求2所述的一种热泵干衣机，其特征在于，供冷凝介质通过的第一通道上设有冷凝介质进口和冷凝介质出口，冷凝介质进口与冷凝介质进入管道连通，冷凝介质出口与冷凝介质排出管道连通。
  4. 根据权利要求1-3任一所述的一种热泵干衣机，其特征在于，所述的循环风道中还设置有第一湿度检测装置和/或第一温度检测装置，所述的第一湿度检测装置和/或第一温度检测装置设置在蒸发器与冷凝器之间，检测蒸发器后侧的湿度和/或温度；或者设置在蒸发器的两侧，检测蒸发器前侧和后侧的湿度和/或温度。
  5. 根据权利要求1-4任一所述的一种热泵干衣机，其特征在于，所述的循环风道中还设有辅助加热装置，所述的辅助加热装置位于冷凝器的前侧和/或后侧，辅助加热循环风道中的循环气体；
    优选的，所述的辅助加热装置包括燃气加热装置，和/或电加热装置。
  6. 根据权利要求5所述的一种热泵干衣机，其特征在于，所述的循环风道中还设置有第二温度检测装置和/或第二湿度检测装置，沿着循环风的流动方向，所述的第二温度检测装置和/或第二湿度检测装置设置在冷凝器的下游，检测冷凝器后侧的温度和/或湿度；或者设置在冷凝器的两侧，检测冷凝器前侧和后侧的温度和/或湿度。
  7. 根据权利要求6所述的一种热泵干衣机，其特征在于，还包括控制装置，所述的辅助冷却装置、辅助加热装置分别与控制装置连接，所述的第一温度检测装置和/或第一湿度检测装置、第二温度检测装置和/或第二湿度检测装置分别与控制装置连接。
  8. 一种根据权利要求1-7任一所述的热泵干衣机的控制方法，其特征在于，热泵干衣机 执行烘干程序时，热泵系统工作，蒸发器冷凝循环风道中的循环气体；在一定时间内，经蒸发器的冷凝作用后的循环气体的湿度和/或温度高于预设值时，辅助冷却装置开始工作，辅助冷凝循环气体；
    或者，热泵干衣机执行快速烘干程序，所述的快速烘干程序包括：热泵系统、辅助冷却装置和/或辅助加热装置同时开始工作。
  9. 根据权利要求8所述的热泵干衣机的控制方法，其特征在于，控制装置根据第一湿度检测装置和/或第一温度检测装置检测到的湿度和/或温度的值或者变化差值，控制辅助冷却装置开始工作；
    优选的，当一定时间内，控制装置判断第一湿度检测装置检测到的湿度的值大于预设值，或者湿度的变化差值小于预设值时，控制辅助冷却装置开始工作。
  10. 根据权利要求8或9所述的热泵干衣机的控制方法，其特征在于，控制装置根据第二温度检测装置和/或第二湿度检测装置检测到的温度和/或湿度的值或者差值，控制辅助加热装置开始工作；
    优选的，当一定时间内，控制装置判断第二温度检测装置检测到的温度小于预设值，或者温度的差值小于预设值时，控制辅助加热装置开始工作。
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