WO2013067837A1 - 一种干衣冷凝用热交换器及干衣***及其干衣机和干衣方法 - Google Patents

一种干衣冷凝用热交换器及干衣***及其干衣机和干衣方法 Download PDF

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Publication number
WO2013067837A1
WO2013067837A1 PCT/CN2012/080441 CN2012080441W WO2013067837A1 WO 2013067837 A1 WO2013067837 A1 WO 2013067837A1 CN 2012080441 W CN2012080441 W CN 2012080441W WO 2013067837 A1 WO2013067837 A1 WO 2013067837A1
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WIPO (PCT)
Prior art keywords
air
clothes
heat exchanger
drying
hot
Prior art date
Application number
PCT/CN2012/080441
Other languages
English (en)
French (fr)
Inventor
梁海山
吕佩师
许升
宋华诚
徐永洪
宋斌
Original Assignee
海尔集团公司
青岛海尔滚筒洗衣机有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201110350840.7A external-priority patent/CN102505437B/zh
Priority claimed from CN201110349942.7A external-priority patent/CN102517857B/zh
Priority claimed from CN201110427039.8A external-priority patent/CN102517860B/zh
Application filed by 海尔集团公司, 青岛海尔滚筒洗衣机有限公司 filed Critical 海尔集团公司
Priority to EP12847897.1A priority Critical patent/EP2778281B1/en
Priority to JP2014540296A priority patent/JP6069797B2/ja
Priority to US14/355,607 priority patent/US9869052B2/en
Publication of WO2013067837A1 publication Critical patent/WO2013067837A1/zh

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Classifications

    • 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 
    • D06F58/22—Lint collecting 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 
    • D06F58/24—Condensing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
    • 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 
    • D06F58/206—Heat pump arrangements

Definitions

  • the present invention relates to the field of dry clothes, in particular to a dryer and a drying method, in particular to an improved heat exchanger for drying clothes, a clothes drying system having the same, a dryer and a drying method.
  • Background Art In a clothes drying mechanism for a clothes dryer or a washer-dryer, a device for generating heated air is often a heating method in which air is heated by a heater.
  • the existing electric dryers generally use a heating wire or a heating tube as a heat source, and such products have high energy consumption, long drying time and poor safety.
  • a heat pump dryer was developed, and a heat pump system was used to enhance the recycling of heat, improve heat utilization efficiency, and reduce power consumption.
  • the heat pump type clothes drying device is provided with an air circulation passage as follows: The heated air heated by the condenser in the heat pump circulation system is sent into the drying chamber containing the laundry, and the moisture absorption air that has taken moisture from the laundry is sent back. Dehumidification is carried out at the evaporator, and the dehumidified air is again heated by the condenser and sent to the drying chamber.
  • the energy consumption of these heat pump dryers is reduced, the drying speed is not improved, and the drying process takes a long time. Generally, it takes 2-3 hours to dry the 7-8KG clothes. In order to remove the moisture in the clothes in a short time, various ways have been taken to achieve this.
  • the method adopted by the dryer is to raise the temperature, strengthen the surface air circulation, and increase the heat exchange area. Despite these methods, the energy consumption and time of the drying process remain high. And drying the clothes at a high temperature, the fabric itself is damaged, and wrinkles and shrinkage are easily generated.
  • the Chinese Patent Application No. 200610153406. 9 discloses a laundry drying apparatus capable of achieving a stable operation of a heat pump that produces dry clothes air circulating between a drying chamber and a heat pump. Wherein, the air heated by the heater in the heat pump is sent into the water tank as a drying chamber, and the air discharged from the water tank passes through the filter unit, returns to the heat pump, is dehumidified by the heat absorber, and then sent to the heater. Form an air circulation passage.
  • the filter unit is provided with a lint filter, and is provided with a pipe communicating with the air discharge port and the air introduction port.
  • the existing dryer drying cycle system uses cold air as a cooling medium for the condensing heat exchanger to be applied to the dryer or the washing and drying machine.
  • the high-temperature and high-humidity air produced by the clothes is recycled and reused as low-temperature and low-humidity air.
  • the second is to make the dry clothes produce high-temperature and high-humidity and exchange heat with the outside into cold air to become low-temperature and low-humidity air, and will be preheated after exchange.
  • the incoming air is sent to the internal circulation.
  • the disadvantage is that the former needs a large amount of external cooling air, and the heat taken away from the hot and humid air is re-entered into the air of the drying cycle. More energy is needed for heating.
  • the latter drawback is that the drying air is discharged into the outside world. The water vapor in the humid air cannot be completely condensed, and there is still a large amount of water vapor entering the environment to affect the comfort of the environment.
  • Drying machine using cold air as cooling medium or washing and drying machine.
  • the drying fan drives the drying air to flow along the drying route, the heating wire/tube starts to heat work, and the hot air enters the washing/drying clothes.
  • the temperature of the clothes and moisture in the washing/drying cylinder is increased.
  • the water evaporates into water vapor passing through the chip filter and entering the condensing heat exchanger.
  • the condensing fan drives the heat exchange between the outside air and the internal air, and the internal hot and humid air temperature is lowered.
  • the water vapor condenses into liquid water, and the hot and humid air is converted into dry low-temperature air, which is sent to the heating wire/tube heating cycle drying clothes by the drying fan.
  • the condensing heat exchanger adopts a metal foil to form a drying air passage and a staggered condensing air passage through a welding process.
  • the processing technology of the condenser is complicated, and the manufacturing process cannot be arbitrarily performed according to the structure of the washing machine, and the cost is high.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a heat exchanger for drying clothes condensing which is simple in structure and low in cost. Meanwhile, the present invention provides a clothes dryer having the heat exchanger. The present invention provides a clothes drying system having the heat exchanger, which preheats the condensed dry air and reheats it by utilizing the residual heat of the moist hot air after heat exchange with the clothes during the drying process to improve drying efficiency, Save power and time.
  • the present invention also provides a clothes dryer having the drying system.
  • the present invention provides a method of drying a garment having the dryer system dryer.
  • the basic idea of adopting the technical solution of the present invention is: a heat exchanger for drying clothes condensing, wherein the heat exchanger is an external air-cooled heat exchanger, and the interior includes two groups of different directions.
  • the air passages of the two groups are respectively a condensing duct and an outside air duct.
  • Each group of ducts is composed of a plurality of air chambers, and the air chambers of the two groups of ducts are alternately spaced, and each of the same group of ducts is alternately spaced.
  • An air chamber between the adjacent air chambers is another group of air passages.
  • the outside air duct is provided with a condensing fan at one end, and the other end is directly connected to the outside, and one end of the condensing duct is a hot and humid air inlet, and the other end is a condensing air outlet.
  • One end of the heat exchanger condensing duct humid air inlet is provided with a flushing and cleaning chip removing mechanism, and includes a flush valve interface communicating with the outside, a flushing flow passage connected to the flush valve and annularly arranged along the humid hot air inlet, A flushing port is provided along the inner edge of the flushing flow passage to flush the interior of the air chamber of the condensing duct.
  • the flushing ports are of multiple groups, and are arranged on each of the adjacent sides of each air cavity and the flushing flow channel.
  • the flushing port is not limited to both sides of each air chamber, and the number can be reduced, corresponding to each air chamber spacing setting. 5 ⁇
  • the heat exchanger is formed by a plastic film, the two adjacent air chambers are separated by a plastic film, the thickness of the plastic film is between 0. 05 ⁇ 1. 5mm. 5 ⁇ The thickness of the plastic film is between 0. 1 ⁇ 0. 5mm.
  • the projections of the two groups of wind tunnel directions intersect.
  • the outside air duct is in a horizontal direction
  • the condensing duct is in a vertical direction.
  • the flow direction of the moist hot air in the condensing duct is from top to bottom.
  • the air gap of each air cavity of the heat exchanger is 1 ⁇ 20 mm.
  • the air cavity has a ventilation gap of 3 to 12 mm.
  • the clothes dryer having the above-mentioned heat exchanger for drying clothes condensing comprises a clothes bucket, an air outlet, a filter, a drying fan, a heating device and an air inlet, and further comprises a water collecting box, the air outlet and the heat
  • the exchanger is connected, the heat exchanger is connected with the water collecting box, the water collecting box is connected with the air inlet, the filter is arranged between the air outlet and the heat exchanger, and the drying fan and the heating device are sequentially arranged in the water collecting box and the air inlet. between.
  • the water collecting box is connected to the outside through a drain pump, and a water level sensing switch for controlling the opening of the drain pump is arranged in the water collecting box.
  • the filter consists of at least one layer of filter mesh.
  • the drying system of the above-mentioned heat exchanger for drying clothes condensing comprises a water collecting box and a waste heat recovery device, and the residual heat recovery device is provided with two sets of air flow paths, which are a humid hot air path and a waste heat recovery air path, respectively.
  • the group air flow path constitutes a heat exchange structure, and the hot and humid air air path sequentially connects the condensation air passage of the heat exchanger, the water collecting box, and the residual heat recovery air path through the ventilation duct.
  • the water collecting box comprises a water-filled box body and an upper cover, wherein the upper cover is respectively provided with an inlet communicating with the condensation air passage of the heat exchanger and an outlet communicating with the waste heat recovery air passage of the waste heat recovery device, the water collecting box A drain pump is installed, and a water level sensing switch for controlling the opening and closing of the drain pump is provided in the water collecting box.
  • the waste heat recovery device comprises a casing and a heat exchanger disposed in the casing, wherein the hot and humid air air path and the waste heat recovery air path are bidirectionally convectively disposed in the heat exchanger, and the upper part of the two sets of air passages are respectively provided with damp heat Air duct air inlet and The waste heat recovery air passage air outlet and the lower part are respectively provided with a humid hot air air passage air outlet and a waste heat recovery air passage air inlet.
  • the heat exchanger is composed of two sets of heat exchange sheets, each set of heat exchange sheets constitutes a plurality of airflow passages in the same direction, and another set of air flow passages are arranged between two adjacent airflow passages of the same group, two The air flow passages formed by the group of heat exchange sheets are spaced apart from each other to form a two-way cross convection heat exchange structure.
  • the clothes dryer having the above drying system comprises a clothes holding barrel and a heating device, wherein the clothes barrel is provided with an air inlet and an air outlet, and the air outlet is connected with the hot and humid air air path of the waste heat recovery device, and the waste heat recovery device
  • the waste heat recovery air passage is connected to the air inlet
  • the heating device is disposed between the waste heat recovery air passage and the air inlet.
  • a filter is disposed between the air outlet and the hot air air path, and the filter is composed of at least one layer of filter. Preferably, at least one layer of filter screen is detachable.
  • a drying fan is further disposed between the waste heat recovery air passage and the air inlet.
  • the invention has the dry-coating method of the above-mentioned dry-coating system clothes dryer.
  • the hot and humid air after heat exchange between the hot air and the clothes in the clothes-filling bucket passes through the moist hot air wind path and the waste heat recovery air path of the waste heat recovery device.
  • the heat exchange is initially condensed, and then completely condensed by the heat exchanger and the water collecting box to obtain dry air, and then preliminary heat is preheated by heat exchange between the waste heat recovery air path of the waste heat recovery device and the hot and humid air air path, and finally the preliminary preheating drying is performed.
  • the air is heated by a heating device, and the heated dry hot air is introduced into the clothes barrel to exchange heat with the clothes.
  • the thickness of the film is 0. 05 ⁇ 1. 5mm
  • the production cost is low and the heat exchange efficiency is high.
  • the plastic film is used as the heat exchanger material, and the manufacturing process is simpler; and it is easier to use according to the dryer or the washing and drying machine. Different drying powers are combined and manufactured; dryers or washer-dryers using the heat exchanger are lighter in weight and easier to transport, and are less expensive.
  • the clothes drying system and the clothes dryer according to the present invention comprise a waste heat recovery device, a heat exchanger and a water collection box, and the waste heat recovery device comprises two sets of air flow paths, respectively a humid hot air path and a waste heat recovery air path, using waste heat
  • the air that has been condensed by the heat exchanger in the recovery air path pre-cools the hot and humid air in the hot and humid air air path that has just come out of the clothes dryer, and the self-heat absorption temperature rises to preheat, reducing After the heating device of the dryer heats up to the drying temperature, the drying efficiency is improved and the electric energy is saved.
  • the pre-cooling function of the waste heat recovery device can also reduce the flow of the external condensing air and reduce the noise of the condensation fan.
  • FIG. 1 is a schematic structural view of a heat exchanger according to Embodiment 1 of the present invention.
  • Figure 2 is a schematic cross-sectional view of the A-direction of Figure 1;
  • Figure 3 is a schematic view of the flushing mechanism of the flushing machine according to the second embodiment of the present invention;
  • FIG. 4 is a schematic view of a heat exchanger according to Embodiment 2 of the present invention.
  • Figure 5 is a schematic structural view of a dry cleaning integrated machine according to a third embodiment of the present invention.
  • Figure 6 is a schematic view showing the flow path of the heat exchanger according to the third embodiment of the present invention.
  • Figure 7 is a schematic view of a drying and drying system of a clothes dryer according to a third embodiment of the present invention.
  • Figure 8 is a schematic view showing the flow path of the waste heat recovery device and the heat exchanger according to the fourth embodiment of the present invention.
  • FIG. 9 is a schematic structural view of a heat exchanger of a waste heat recovery device according to Embodiment 4 of the present invention.
  • Figure 10 is a schematic view of a drying and drying system of a clothes dryer according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • the heat exchanger for drying clothes according to the present invention is installed in a clothes dryer or a washing machine having a clothes drying function.
  • the heat exchanger 1 is composed of a plastic film and is an external air-cooled heat exchanger.
  • the interior includes two sets of air passages that are different from each other in direction, and are respectively a condensing duct 11 and an outside air duct 12, each group
  • the air duct is composed of a plurality of air chambers, and the air chambers of the two groups of air passages are alternately spaced, and each of the two adjacent air chambers of the same group of air passages is an air chamber of another group of air passages, which are mutually plastic.
  • the film wall spacing is formed.
  • the outside air duct 12 is provided with a condensing fan 15 (see Figs. 5 and 6), and the other end is directly connected to the outside.
  • the condensing duct 11 is provided with hot and humid air at one end and the condensed air and condensed water at the other end.
  • the condensing duct 11 is constituted by an air chamber 13, and the outside air duct 12 is constituted by an air chamber 14, and an air chamber 14 of the outside air duct 12 is disposed between the air chambers 13 adjacent to the two sides of the condensing duct 11.
  • the flow direction of the moist hot air in the condensation air passage 11 flows from top to bottom.
  • the outside air in the outside air duct 12 flows laterally.
  • the thickness of the plastic film is between 0. 05 ⁇ 1. 5mm; preferably, the thickness of the plastic film is between 0. 08 ⁇ 0. 8mm; more preferably, the thickness of the plastic film Between 0. 1 ⁇ 0. 5mm. l ⁇
  • This embodiment uses a 0. lmm plastic film.
  • the cross-sectional shape of the air chamber is not limited to a rectangular shape, a circular shape, or an elliptical shape, and the air chamber wall may be provided with various corrugated shapes that facilitate the falling of the condensed water, or a combination of any of the above shapes.
  • the plastic film of the present invention is a high temperature resistant plastic film, for example, a polyimide film which can be prevented from being deformed at 150 °C.
  • the plastic film described in this embodiment uses a polyethylene film having a heat distortion temperature of 80-10 CTC.
  • Embodiment 2 As shown in FIG. 3 and FIG. 4, the present invention adds a flushing cleaning chip removing mechanism based on the first embodiment, and the flushing cleaning chip removing mechanism is disposed in the heat exchanger 1 to condense the air passage 11 into hot and humid air.
  • One end of the tuyere 16 includes a flush valve interface 82 communicating with the outside, a flushing flow passage 83 communicating with the flush valve and being annularly disposed along the hot humid air inlet of the heat exchanger, and being disposed along the edge of the flushing flow passage to the heat exchanger
  • the flushing port 81 of the internal hot and humid air wind path flushes Embodiment 3
  • the heat exchanger according to the above embodiment of the present invention may be installed in a dry cleaning machine (see FIG. 5) or in a clothes dryer (see FIG. 7).
  • the utility model comprises a clothes barrel 2, an air outlet 21, a filter 3, a heat exchanger 1, a water collecting box 4, a drying fan 5, a heating device 6, and an air inlet 22, wherein the air outlet 21 communicates with the heat exchanger 1,
  • the heat exchanger 1 is in communication with the water collecting box 4, the water collecting box 4 is in communication with the air inlet 22, the filter 3 is disposed between the air outlet 22 and the heat exchanger 1, and the drying fan 5 and the heating device 6 are sequentially arranged in the water collecting unit.
  • the water collecting box 4 communicates with the outside through a drain pump 41, and a water level sensing switch 42 that controls the opening of the drain pump 41 is provided in the water collecting box 4.
  • the water collecting box 4 includes a water-filled box body 43 and an upper cover 44 (see FIGS. 3 and 4), and the upper cover 44 is respectively provided with a condensed air duct humidifying air outlet port with a heat exchanger.
  • the 17-ported inlet 45 and the outlet 46 communicate with the dryer inlet 22 .
  • the clothes barrel 2, the air outlet 21, the filter 3, the drying fan 5, the heating device 6 and the air inlet 22 can all adopt the existing design, and the air outlet and the air inlet refer to the air outlet and the air inlet of the clothes barrel.
  • the heating device 6 is generally a heating tube or a heating wire, and a heating plate can also be used.
  • the filter 3 is composed of at least one layer of filter mesh; at least one layer of filter mesh is detachable.
  • the hot and humid air blown from the air outlet of the hopper 2 enters the condensing duct 11 of the heat exchanger 1 along the pipeline, in the heat exchanger 1, along the heat exchanger 1.
  • the outside air entering the outside air duct 12 exchanges heat with the hot and humid air in the condensing duct 11, the temperature of the hot and humid air in the condensing duct 11 is lowered, the relative humidity is increased, and the local air distributed around the air chamber wall is saturated.
  • the drying system of the present embodiment is composed of the heat exchanger 1 and the waste heat recovery device 7 described in the first embodiment or the second embodiment, and the residual heat recovery device 7 is provided with two sets of airflows.
  • the air path is a humid hot air air path 71 and a waste heat recovery air path 72, and the two sets of air flow paths constitute a heat exchange structure, and the humid hot air path 71 sequentially passes the heat exchanger condensing duct 11 and the water collecting box 4 through the ventilation duct.
  • the waste heat recovery air passage 72 is connected.
  • the waste heat recovery device 7 includes a casing 70 and a heat exchanger 73 disposed in the casing.
  • the humid air air passage 71 and the waste heat recovery air passage 72 are bidirectionally convectively disposed in the heat exchanger 73, corresponding to the two
  • the upper part of the group air passage shell 70 is provided with a humid hot air air passage air inlet 74 and a waste heat recovery air passage air outlet 75, a lower portion is provided with a moist hot air air passage air outlet 76, and a waste heat recovery air passage air inlet port 77, and the hot air air passage air inlet 74 is provided.
  • the air outlet 76 and the waste heat recovery air passage air inlet 77 and the air outlet 75 are diagonally disposed.
  • the humidified hot air duct air outlet 76 of the heat recovery unit 7 communicates with the heat exchanger 1 condensing duct 11 and the hot and humid air inlet port 16, and the residual heat recovery air passage air inlet 77 communicates with the outlet 46 of the water collecting tank 4.
  • the heat exchanger 73 internally comprises two sets of heat exchange sheets respectively forming a moist hot air path and a waste heat recovery air path, and each set of heat exchange sheets constitutes a plurality of airflow channels in the same direction, and between the two adjacent air flow channels of the same group Another set of air flow passages is provided, and the air flow passages formed by the two sets of heat exchange sheets are spaced apart from each other to form a two-way cross convection heat exchange structure.
  • the heat exchanger 73 is internally formed by a plurality of parallel partitions, and air flow passages 78 and 79 are disposed between the two adjacent partitions, and the air inlet passages are sequentially spaced apart to form two air gaps. Cross-isolated wind roads. Alternatively, two sets of two-way cross-directional airflow passages 78, 79 are bored within a unitary structure. Alternatively, the heat exchanger 73 can also employ an existing plate-spaced partition wall heat exchanger.
  • Embodiment 5 As shown in FIG. 10, unlike the clothes dryer or the washing and drying machine of the third embodiment, on the basis of the fourth embodiment, the dryer or the washing and drying machine of the present embodiment adds a waste heat recovery device. structure.
  • the waste heat recovery device 7 is disposed between the filter 3 and the heat exchanger 1, and is also disposed between the water collection box 4 and the drying fan 5, and the hot and humid air air path 71 communicates with the filter 3 and the heat exchanger 1.
  • the waste heat recovery air passage 72 is connected to the water collection box 4 and the drying fan 5, and the hot and humid air passes through the air outlet of the clothes barrel 2, and then passes through the hot and humid air air path 71 of the waste heat recovery device 7, the heat exchanger 1, and the water collection box. 4.
  • the waste heat recovery is completed by the waste heat recovery air passage 72 of the waste heat recovery device 7.
  • the hot and humid air blown from the air outlet of the container 2 enters the hot and humid air path 71 along the humid air path of the waste heat recovery device, and the air outlet 76 from the hot air path.
  • the temperature of the hot and humid air is lowered, the relative humidity is increased, the local air distributed around the air chamber wall is saturated, the water vapor in the air is deposited, and flows into the water collecting box 4 along the air chamber wall; when the water level sensing switch 42 senses the water level reaches the preset
  • the drain pump 41 is opened to discharge the condensed water; the condensed low-heat and low-humidity air passes through the water collecting box 4, returns to the waste heat recovery air
  • the filter 3 is composed of at least two layers of filters, which are closer to the air outlet.
  • a layer of filter is removable for cleaning.
  • the invention is directed to a heat exchanger using a plastic film material for air-cooling outside air, has high heat exchange efficiency, and uses a plastic film as a heat exchanger material, and the manufacturing process is simpler; it is easier to use according to a clothes dryer or a washing and drying machine. Different drying powers, combined manufacturing and installation; dryers or washer-dryers using this heat exchanger are lighter in weight and easier to transport, and at a lower cost.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

一种干衣冷凝用热交换器及干衣***及其干衣机和干衣方法，所述的热交换器（1）为外界空气风冷式热交换器，内部包括两组方向不同互不相通的风道，两组风道分别为冷凝风道（11）和外界空气风道（12），每组风道由多个空气腔构成，两组风道的空气腔依次交替间隔，同一组风道的每两个相邻近的空气腔之间为另一组风道的一空气腔。干衣机包括盛衣桶（2）、出风口（21）、过滤器（3）、烘干风机（5）、加热装置（6）及进风口（22），还包括集水盒（4），所述的出风口（21）与热交换器（1）连通，热交换器（1）与集水盒（4）连通，集水盒（4）与进风口（22）连通，过滤器（3）设于出风口（21）与热交换器（1）之间，烘干风机（5）和加热装置（6）依次设于集水盒（4）与进风口（22）之间。本发明具有结构简单、生产成本低、热交换效率高的特点。

Description

一种干衣冷凝用热交换器及干衣***及其干衣机和干衣方法 技术领域
本发明涉及干衣领域， 具体是干衣机和干衣方法， 尤其是一种改进的干衣冷凝用热交 换器、 具有该热交换器的干衣***及其干衣机和干衣方法。 背景技术 在用于衣物干燥机或者洗衣干衣机的干衣机构中， 生成加热空气的装置大多采用通过 加热器来加热空气的加热方式。 现有电热式干衣机一般采用加热丝或加热管作为热源， 此 类产品能耗高， 烘干时间长且安全性差。 为了降低能耗， 开发出了热泵式干衣机， 使用热 泵***， 加强对热量的循环利用， 提高热量的利用效率， 降低电能的消耗。 热泵式衣物干燥装置中设置有如下的空气循环通道： 由热泵循环***中的冷凝器进行 过加热的加热空气被送入装有衣物的干燥室内， 从衣物中夺取了水分的吸湿空气被送回到 蒸发器处进行除湿， 除湿后的空气再次由冷凝器加热， 并送入干燥室中。 虽然这些热泵干衣机的能耗有所降低， 但是干衣速度方面， 没有提高， 干衣过程所需 时间仍然较长， 一般烘干 7-8KG衣物需要 2-3个小时。 为了短时间内除去衣物中的水分， 人们采取各种方式来实现这一目的， 干衣机所采用的方法是升高温度， 加强表面空气流通， 增大热交换面积。 尽管使用这些方法， 但干衣过程的能耗和时间依然居高不下。 且在高温 下烘干衣物， 对织物本身有破坏， 并容易产生皱褶和縮水。 申请号为 200610153406. 9的中国专利公开了一种能够使产生在干燥室与热泵之间循环 的干衣空气的热泵实现稳定操作的衣物干燥装置。 其中， 由热泵中的加热器进行过加热的 空气送入作为干燥室的盛水桶中， 从盛水桶排出的空气穿过过滤器单元后回到热泵， 由吸 热器除湿之后再送至加热器， 形成空气循环通道。 过滤器单元中设有线屑过滤器， 并且设 有与空气排出口及空气导入口相连通的管道。 现有干衣机干衣循环***利用冷空气作为冷却介质的冷凝型热交换器应用到干衣机中 或洗干一体机中， 主要有两种利用方式， 其一是利用外界冷空气将干衣产生高温高湿空气 经交换成为低温低湿的空气后循环再利用， 其二是将干衣产生高温高湿与外界进入冷空气 热交换变为低温低湿空气排除， 而将交换后有被预热的外来空气送入内部循环。 其弊端是 前者需要的外界冷却空气量大， 从湿热空气中带走的热量多， 重新进入烘干循环的空气再 加热需要的能量多。 后者弊端是烘干空气在排出到外界的过程中， 湿空气中的水汽不能被 彻底冷凝出来， 仍有大量的水汽进入环境影响环境的舒适度。
利用冷空气作为冷却介质的干衣机中或洗干一体机， 烘干过程中， 烘干风机驱动烘干 空气沿烘干路线流动， 加热丝 /管开始加热工作， 热空气进入洗衣 /干衣筒， 洗衣 /干衣筒内 的衣物和水分温度升高， 水分蒸发为水汽经过线屑过滤器后进入冷凝热交换器， 冷凝风机 驱动外部空气与内部空气发生的热交换， 内部湿热空气温度降低， 水汽冷凝成液态水， 湿 热空气转化为干燥的低温空气， 由烘干风机送入加热丝 /管加热循环干衣。 上述冷凝热交换器采用金属薄片经过焊接工艺构成烘干风道和交错的冷凝风道， 这种 冷凝器加工工艺较复杂， 不能随意根据洗衣机结构进行加工制造， 成本较高。
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， 提供一种结构简单、 成本低的干 衣冷凝用热交换器。 同时， 本发明提供一种具有该热交换器的干衣机。 本发明提供一种具有该热交换器的干衣***， 在干衣过程中利用与衣物热交换后的潮 湿热空气的余热初步预热经冷凝后的干燥空气再加热， 以提高干衣效率、 节省电能和时间。
本发明还提供一种具有该干衣***的干衣机。
最后本发明提供一种具有该干衣***干衣机的干衣方法。 为解决上述技术问题， 本发明采用技术方案的基本构思是： 一种干衣冷凝用热交换器， 所述的热交换器为外界空气风冷式热交换器， 内部包括两组方向不同互不相通的风道， 两 组风道分别为冷凝风道和外界空气风道， 每组风道由多个空气腔构成， 两组风道的空气腔 依次交替间隔， 同一组风道的每两个相邻近的空气腔之间为另一组风道的一空气腔。 所述的外界空气风道一端设有冷凝风机， 另一端直通外界， 冷凝风道一端为湿热空气 入口， 另一端为冷凝空气出口。 所述热交换器冷凝风道湿热空气入口的一端设有冲水清理线屑机构， 包括与外部相通 的冲水阀接口、 与冲水阀接口连通且沿湿热空气入口环形设置的冲水流道、 沿冲水流道内 侧边沿设置以向冷凝风道空气腔内部冲水的冲水口。 冲水口为多组， 设于每个空气腔与冲水流道对应相邻的两侧。 冲水口不限于每个空气 腔的两侧， 也可以减少数量， 对应每个空气腔间隔设置。 所述的热交换器由塑料薄膜构成， 两相邻空气腔由塑料薄膜壁间隔， 所述的塑料薄膜 厚度在 0. 05〜1. 5mm之间。 优选的， 所述的塑料薄膜厚度在 0. 08〜0. 8mm之间； 更优选的， 所述的塑料薄膜厚度 在 0. 1〜0. 5mm之间。 两组风道方向的投影相交。 优选的， 所述的外界空气风道为水平方向， 冷凝风道为竖直方向。 优选的， 冷凝风道 内的湿热空气的流动方向为自上而下流动。 所述热交换器每个空气腔的通风间隙为 l〜20mm。 优选的， 所述空气腔的通风间隙为 3〜12mm。 本发明具有上述干衣冷凝用热交换器的干衣机， 包括盛衣桶、 出风口、 过滤器、 烘干 风机、 加热装置及进风口， 还包括集水盒， 所述的出风口与热交换器连通， 热交换器与集 水盒连通， 集水盒与进风口连通， 过滤器设于出风口与热交换器之间， 烘干风机和加热装 置依次设于集水盒与进风口之间。 所述的集水盒通过排水泵与外部连通， 集水盒内设有控制排水泵开启的水位感应开关。 所述的过滤器由至少一层过滤网构成。 进一步的， 至少一层过滤网可拆卸。 本发明具有上述干衣冷凝用热交换器的干衣***， 包括集水盒和余热回收装置， 余热 回收装置内部设有两组气流风路， 分别为湿热空气风路和余热回收风路， 两组气流风路构 成热交换结构， 湿热空气风路通过通风管道依次将热交换器的冷凝风道、 集水盒、 余热回 收风路连通。 所述的集水盒包括盛水的盒体和上盖， 上盖上分别设有与热交换器的冷凝风道相通的 入口和与余热回收装置的余热回收风路相通的出口， 集水盒安装一排水泵， 集水盒内设有 控制排水泵开启关闭的水位感应开关。 所述的余热回收装置包括一外壳和设于外壳内的换热器， 湿热空气风路和余热回收风 路双向交叉对流的设于换热器内， 对应两组风路外壳上部分别设有湿热空气风路进风口和 余热回收风路出风口、 下部分别设有湿热空气风路出风口和余热回收风路进风口。 所述的换热器由两组热交换片分别构成， 每组热交换片构成多个同方向的气流通道， 同一组两相邻的气流通道之间设有另一组的一气流通道， 两组热交换片构成的气流通道彼 此间隔设置， 形成双向交叉对流的热交换结构。 本发明具有上述干衣***的干衣机， 包括盛衣桶和加热装置， 盛衣桶设有进风口和出 风口， 所述的出风口与余热回收装置的湿热空气风路连通， 余热回收装置的余热回收风路 与进风口连通， 加热装置设于余热回收风路与进风口之间。 所述的出风口与湿热空气风路之间设有过滤器， 所述的过滤器由至少一层过滤网构成。 优选的， 至少一层过滤网可拆卸。 所述的余热回收风路与进风口之间还设有一烘干风机。 本发明具有上述干衣***干衣机的干衣方法， 干衣时， 在盛衣桶中热空气与衣物热交 换后的湿热空气， 先经过余热回收装置的湿热空气风路与余热回收风路热交换初步冷凝， 再通过热交换器、 集水盒后完全冷凝得到干燥空气， 然后通过余热回收装置的余热回收风 路与湿热空气风路热交换进行初步预热， 最后将初步预热的干燥空气通过加热装置加热， 加热后的干燥热空气通入盛衣桶与衣物热交换。 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。 本发明所述的热交换器、 干衣***适用于干衣机， 也适用于洗干一体机， 所述的热交 换器由非金属材料塑料薄膜构成， 厚度在 0. 05〜1. 5mm之间， 与金属热交换器比较， 生产 成本低、 热交换效率高； 另外， 以塑料薄膜作为热交换器材料， 制造工艺更为简单； 且更 容易根据干衣机或用于洗干一体机的不同干衣功率， 进行组合制造； 使用该热交换器的干 衣机或洗干一体机重量更轻便于运输， 且成本更低。 本发明所述的干衣***及干衣机， 包括余热回收装置、 热交换器和集水盒， 余热回收 装置包括两组气流风路， 分别为湿热空气风路和余热回收风路， 利用余热回收风路中已经 经过热交换器冷凝后的空气对刚从干衣机盛衣桶中出来的湿热空气风路中的湿热空气进行 预冷， 且自身吸收热量温度升高进行预热， 降低了经过干衣机加热装置再加热到烘干温度 的能量损耗， 提高了干衣效率， 节省了电能； 同时余热回收装置的预冷功能也可以减少外 界冷凝空气的流量， 降低了冷凝风机的噪音。 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
图 1是本发明实施例一所述的热交换器结构示意图；
图 2是图 1的 A向断面示意图； 图 3是本发明实施例二所述的冲水清理线屑机构示意图；
图 4是本发明实施例二所述的热交换器示意图；
图 5是本发明实施例三所述的干洗一体机结构示意图；
图 6是本发明实施例三所述的热交换器风路流通示意图；
图 7是本发明实施例三所述的干衣机循环干衣***示意图；
图 8是本发明实施例四所述的余热回收装置与热交换器风路流通示意图；
图 9是本发明实施例四所述的余热回收装置换热器结构示意图；
图 10是本发明实施例五所述的干衣机循环干衣***示意图。 具体实施方式 实施例一
如图 1和图 2所示， 本发明所述的干衣冷凝用热交换器， 安装于干衣机或者是具有干 衣功能的洗衣机内。 所述的热交换器 1 由塑料薄膜构成， 为外界空气风冷式热交换器， 内 部包括两组方向不同互不相通的风道， 分别为冷凝风道 11和外界空气风道 12， 每组风道由 多个空气腔构成， 两组风道的空气腔依次交错间隔， 同一组风道的每两个相邻近的空气腔 之间为另一组风道的一空气腔， 彼此由塑料薄膜壁间隔构成。 所述的外界空气风道 12—端设有冷凝风机 15 (参阅图 5和图 6 ) ， 另一端直通外界， 冷凝风道 11一端通入湿热空气， 另一端排出冷凝后的空气和冷凝水。 冷凝风道 11 由空气 腔 13构成， 外界空气风道 12由空气腔 14构成， 冷凝风道 11两相邻近的空气腔 13之间为 外界空气风道 12的一空气腔 14。为不使冷凝水附着在空气腔壁上形成热阻，降低冷凝效率， 所述的冷凝风道 11 内的湿热空气的流动方向为自上而下流动。 优选的， 外界空气风道 12 内的外界空气横向流动。 其中， 所述的塑料薄膜厚度 L在 0. 05〜1. 5mm之间； 优选的， 所述的塑料薄膜厚度在 0. 08〜0. 8mm之间；更优选的，所述的塑料薄膜厚度在 0. 1〜0. 5mm之间。本实施例采用 0. lmm 的塑料薄膜。 所述空气腔截面形状不局限于矩形、 圆形、 椭圆型， 还可以空气腔壁设有利 于冷凝水落下的各种波纹形状， 或是上述任意形状的组合。 本发明所述的塑料薄膜为耐高温的塑料薄膜，例如， 可以达到 150°C不变形的聚酰亚胺 薄膜。 本实施例所述的塑料薄膜采用热变形温度为 80-10CTC的聚乙烯薄膜。 实施例二 如图 3和图 4所示， 本发明在实施例一的基础上增加了冲水清理线屑机构， 该冲水清 理线屑机构设于热交换器 1冷凝风道 11湿热空气入风口 16的一端， 包括与外部相通的冲 水阀接口 82、 与冲水阀接口连通且沿热交换器湿热空气入风口环形设置的冲水流道 83、 沿 冲水流道边沿设置以向热交换器内部的湿热空气风路冲水的冲水口 81。 实施例三 如图 5至图 7所示， 本发明上述实施例所述的热交换器可以安装在干洗一体机中 （参 阅图 5 ) ， 也可安装在干衣机中 （参阅图 7 ) ， 包括盛衣桶 2、 出风口 21、 过滤器 3、 热交 换器 1、 集水盒 4、 烘干风机 5、 加热装置 6及进风口 22， 所述的出风口 21与热交换器 1 连通， 热交换器 1与集水盒 4连通， 集水盒 4与进风口 22连通， 过滤器 3设于出风口 22 与热交换器 1之间， 烘干风机 5和加热装置 6依次设于集水盒 4与进风口 22之间。 所述的 集水盒 4通过排水泵 41与外部连通， 集水盒 4内设有控制排水泵 41开启的水位感应开关 42。 具体的为， 所述的集水盒 4包括盛水的盒体 43和上盖 44 (参阅图 3和图 4) ， 上盖 44 上分别设有与热交换器的冷凝风道湿热空气出风口 17相通的入口 45和与干衣机进风口 22 相通的出口 46。 其中盛衣桶 2、 出风口 21、 过滤器 3、 烘干风机 5、 加热装置 6及进风口 22均可以采 用现有设计， 出风口和进风口是指盛衣桶的出风口和进风口， 加热装置 6—般采用加热管 或加热丝， 也能够采用加热盘。 所述的过滤器 3 由至少一层过滤网构成； 至少一层过滤网 可拆卸。 如图 7所示， 烘干进行时， 从盛衣桶 2出风口吹出的湿热空气沿管路进入热交换器 1 的冷凝风道 11内， 在热交换器 1中， 沿热交换器 1的外界空气风道 12进入的外界空气与 冷凝风道 11 内的湿热空气产生热交换， 冷凝风道 11 内的湿热空气温度降低， 相对湿度升 高， 分布在空气腔壁周边的局部空气达到饱和状态， 空气中的水蒸气析出， 沿空气腔壁流 入集水盒 4; 当水位感应开关 42感知水位达到预设定的位置时， 排水泵 41开启， 将冷凝水 排出； 经过冷凝的低热低湿空气经过集水盒 4， 由烘干风机 5送入加热装置 6加热后重新通 过进风口进入盛衣桶 2内。 实施例四 如图 8和图 9所示， 本实施例干衣***由实施例一或实施例二所述的热交换器 1和余 热回收装置 7构成， 余热回收装置 7内部设有两组气流风路， 分别为湿热空气风路 71和余 热回收风路 72， 两组气流风路构成热交换结构，湿热空气风路 71通过通风管道依次将热交 换器的冷凝风道 11、 集水盒 4、 余热回收风路 72连通。 具体的，所述的余热回收装置 7包括一外壳 70和设于外壳内的换热器 73，湿热空气风 路 71和余热回收风路 72双向交叉对流的设于换热器 73内， 对应两组风路外壳 70上部设 有湿热空气风路进风口 74和余热回收风路出风口 75、 下部设有湿热空气风路出风口 76和 余热回收风路进风口 77， 热空气风路进风口 74、 出风口 76和余热回收风路进风口 77、 出 风口 75均对角设置。 余热回收装置 7的湿热空气风路出风口 76与热交换器 1冷凝风道 11 湿热空气入风口 16连通， 余热回收风路进风口 77与集水盒 4的出口 46连通。 所述的换热器 73内部由两组热交换片分别构成湿热空气风路和余热回收风路， 每组热 交换片构成多个同方向的气流通道， 同一组两相邻的气流通道之间设有另一组的一气流通 道， 两组热交换片构成的气流通道彼此间隔设置， 形成双向交叉对流的热交换结构。
或者， 如图 9所示， 换热器 73内部由多个平行的隔板构成， 两相邻隔板之间设有气流 通道 78、 79， 将气流通道两进风口方向依次间隔封堵形成两个交叉隔离的风路。 或者在一 整体结构内部间隔穿凿两组双向交叉方向的气流通道 78、 79。 再或者， 换热器 73也可采用 现有的板面间隔的间壁式换热器。 实施例五 如图 10所示， 与实施例三所述的干衣机或洗干一体机不同， 在实施例四的基础上， 本 实施的干衣机或洗干一体机增加余热回收装置 Ί结构。所述的余热回收装置 7设于过滤器 3 与热交换器 1之间， 同时也设于集水盒 4与烘干风机 5之间， 湿热空气风路 71连通过滤器 3与热交换器 1，余热回收风路 72连通集水盒 4与烘干风机 5，湿热空气由盛衣桶 2的出风 口出来后依次通过余热回收装置 7的湿热空气风路 71、 热交换器 1、集水盒 4， 再通过余热 回收装置 7的余热回收风路 72完成余热回收。 实施例六
如图 10所示， 烘干进行时， 从盛衣桶 2出风口吹出的湿热空气沿由余热回收装置的湿 热空气风路进风口 74进入湿热空气风路 71， 从湿热空气风路出风口 76处排出进入热交换 器 1的冷凝风道 11内， 在热交换器 1中， 沿热交换器 1的外界空气风道 12进入的外界空 气与冷凝风道 11 内的湿热空气产生热交换， 冷凝风道 11 内的湿热空气温度降低， 相对湿 度升高， 分布在空气腔壁周边的局部空气达到饱和状态， 空气中的水蒸气析出， 沿空气腔 壁流入集水盒 4; 当水位感应开关 42感知水位达到预设定的位置时， 排水泵 41开启， 将冷 凝水排出； 经过冷凝的低热低湿空气经过集水盒 4， 回到余热回收装置的余热回收风路进风 口 77， 进入余热回收风路 72; 由于经过冷凝的空气在失去水分的同时， 温度也会降低， 回 到余热回收装置的相对低温空气与湿热空气风路 71的湿热空气又产生了一次冷热交换， 结 果使将要进入热交换器 1的湿热空气温度提前预冷降低， 经过余热回收装置 7的干燥空气 在加热装置 6重新加热前温度升高， 形成预热， 因此， 重新进入烘干循环的空气再加热需 要的能量也减少， 降低了能量消耗和大流量冷凝空气产生的噪音。 在上述实施例的基础上， 为了避免线屑堵塞热交换器 1或余热回收装置 7， 更好的过滤 线屑， 所述的过滤器 3 由至少两层过滤网构成， 距离出风口较近的一层过滤网可拆卸以便 于清洗。 本发明针对外界空气风冷采用塑料薄膜材料的热交换器， 热交换效率高， 以塑料薄膜 作为热交换器材料， 制造工艺更为简单； 更容易根据干衣机或用于洗干一体机的不同干衣 功率， 组合制造安装； 使用该热交换器的干衣机或洗干一体机重量更轻便于运输， 且成本 更低。
上述实施例仅仅是对本发明的优选实施方案进行描述， 并非对本发明的构思和范围进 行限定， 在不脱离本发明设计思想的前提下， 本领域中专业技术人员对本发明的技术方案 作出的各种变化和改进， 均属于本发明的保护范围。

Claims

权 利 要 求 书
1、 一种干衣冷凝用热交换器， 其特征在于： 所述的热交换器为外界空气风冷式热交换 器， 内部包括两组方向不同互不相通的风道， 两组风道分别为冷凝风道和外界空气风道， 每组风道由多个空气腔构成， 两组风道的空气腔依次交替间隔， 同一组风道的每两个相邻 近的空气腔之间为另一组风道的一空气腔。
2、 根据权利要求 1所述的一种干衣冷凝用热交换器， 其特征在于： 所述的外界空气风 道一端设有冷凝风机， 另一端直通外界， 冷凝风道一端为湿热空气入口， 另一端为冷凝空 气出口。
3、 根据权利要求 2所述的一种干衣冷凝用热交换器， 其特征在于： 所述热交换器冷凝 风道湿热空气入口的一端设有冲水清理线屑机构， 包括与外部相通的冲水阀接口、 与冲水 陶接口连通且沿湿热空气入口环形设置的冲水流道、 沿冲水流道内侧边沿设置以向冷凝风 道空气腔内部冲水的冲水口。
4、 根据权利要求 1所述的一种干衣冷凝用热交换器， 其特征在于： 所述的热交换器由 塑料薄膜构成， 两相邻空气腔由塑料薄膜壁间隔， 所述的塑料薄膜厚度在 0. 05〜1. 5ππη之 间。
5、 根据权利要求 4所述的一种干衣冷凝用热交换器， 其特征在于： 所述的塑料薄膜厚 度在 0. 08〜0. 8mm之间。
6、 根据权利要求 1或 2所述的一种干衣冷凝用热交换器， 其特征在于： 两组风道方向 的投影相交。
7、 根据权利要求 6所述的一种干衣冷凝用热交换器， 其特征在于： 所述的外界空气风 道为水平方向， 冷凝风道为竖直方向。
8、 根据权利要求 1所述的一种干衣冷凝用热交换器， 其特征在于： 所述热交换器每个 空气腔的通风间隙为 l〜20mm。
9、 根据权利要求 8所述的一种干衣冷凝用热交换器， 其特征在于： 所述空气腔的通风 间隙为 3〜12mm。
10、 一种具有如权利要求 1-9任一所述热交换器的干衣机， 其特征在于： 干衣机包括 盛衣桶、 出风口、 过滤器、 烘干风机、 加热装置及进风口， 其特征在于： 还包括集水盒， 所述的出风口与热交换器连通， 热交换器与集水盒连通， 集水盒与进风口连通， 过滤器设 于出风口与热交换器之间， 烘干风机和加热装置依次设于集水盒与进风口之间。
11、 根据权利要求 10所述的干衣机， 其特征在于： 所述的集水盒通过排水泵与外部连 通， 集水盒内设有控制排水泵开启的水位感应开关。
12、 根据权利要求 10所述的干衣机， 其特征在于： 所述的过滤器由至少一层过滤网构 成。
13、 根据权利要求 12所述的干衣机， 其特征在于： 至少一层过滤网可拆卸。
14、 一种具有如权利要求 1-7任一所述热交换器的干衣***， 其特征在于： 包括集水 盒和余热回收装置， 余热回收装置内部设有两组气流风路， 分别为湿热空气风路和余热回 收风路， 两组气流风路构成热交换结构， 湿热空气风路通过通风管道依次将热交换器的冷 凝风道、 集水盒、 余热回收风路连通。
15、 根据权利要求 14所述的干衣***， 其特征在于： 所述的集水盒包括盛水的盒体和 上盖， 上盖上分别设有与热交换器的冷凝风道相通的入口和与余热回收装置的余热回收风 路相通的出口， 集水盒安装一排水泵， 集水盒内设有控制排水泵开启关闭的水位感应开关。
16、 根据权利要求 14或 15所述的干衣***， 其特征在于： 所述的余热回收装置包括 一外壳和设于外壳内的换热器， 湿热空气风路和余热回收风路双向交叉对流的设于换热器 内， 对应两组风路外壳上部分别设有湿热空气风路进风口和余热回收风路出风口、 下部分 别设有湿热空气风路出风口和余热回收风路进风口。
17、 根据权利要求 16所述的干衣***， 其特征在于： 所述的换热器由两组热交换片分 别构成， 每组热交换片构成多个同方向的气流通道， 同一组两相邻的气流通道之间设有另 一组的一气流通道， 两组热交换片构成的气流通道彼此间隔设置， 形成双向交叉对流的热 交换结构。
18、 一种具有如权利要求 14-17任一所述干衣***的干衣机， 包括盛衣桶和加热装置， 盛衣桶设有进风口和出风口， 其特征在于： 所述的出风口与余热回收装置的湿热空气风路 连通， 余热回收装置的余热回收风路与进风口连通， 加热装置设于余热回收风路与进风口 之间。
19、 根据权利要求 18所述的干衣机， 其特征在于： 所述的出风口与湿热空气风路之间 设有过滤器， 所述的过滤器由至少一层过滤网构成。
20、 根据权利要求 18所述的干衣机， 其特征在于： 所述的余热回收风路与进风口之间 还设有一烘干风机。
21、 一种如权利要求 18-20任一所述干衣机的干衣方法， 其特征在于： 干衣时， 在盛 衣桶中热空气与衣物热交换后的湿热空气， 先经过余热回收装置的湿热空气风路与余热回 收风路热交换初步冷凝， 再通过热交换器、 集水盒后完全冷凝得到干燥空气， 然后通过余 热回收装置的余热回收风路与湿热空气风路热交换进行初步预热， 最后将初步预热的干燥 空气通过加热装置加热， 加热后的干燥热空气通入盛衣桶与衣物热交换。
PCT/CN2012/080441 2011-11-08 2012-08-22 一种干衣冷凝用热交换器及干衣***及其干衣机和干衣方法 WO2013067837A1 (zh)

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