CN201190239Y - Clothes dryer with functions of waste heat recycling and waste moisture recovery - Google Patents

Abstract

The utility model relates to a clothes dryer, which comprises a base, a shell installed on the base, a centrifugal wind wheel installed on the base and located at the lower part of the shell cavity, and a driving mechanism for driving the drying cylinder and the centrifugal wind wheel to rotate. , the drying cylinder and the electric heating wire installed in the upper part of the housing cavity, wherein the bottom of the housing or the base is provided with an air inlet and an exhaust port, the electric heating wire is installed at the rear of the drying cylinder, and the drying cylinder There is a first exhaust passage at the front of the front part, the first exhaust passage communicates with the air inlet of the centrifugal wind wheel, the air outlet of the centrifugal wind rotor communicates with the hot air duct, the hot air duct communicates with the second exhaust duct, and the second exhaust air The pipe communicates with the exhaust port, and there is a full heat exchange system between the hot air pipe and the second exhaust pipe, which can exchange heat between the hot and humid air discharged from the drying cylinder and the air entering the casing from the air inlet. heat exchanger. The utility model improves the comfort of the indoor environment, greatly shortens the drying time, saves energy, and consumes less power.

Description

Clothes dryer with functions of waste heat recycling and waste moisture recovery

Technical field:

The utility model relates to a clothes dryer, in particular to a clothes dryer with functions of waste heat recycling and waste moisture recovery, which belongs to the improvement technology of clothes dryers.

Background technique:

There are two types of clothes dryers currently on the market: direct exhaust and condensation cycle dryers. The in-line clothes dryer directly discharges the hot and humid air after one-time drying into the room, or punches holes in the wall to discharge the hot and humid air to the outside through the pipe. This type of in-line clothes dryer discharges The hot and humid gas increases the temperature and humidity of the indoor air, which greatly reduces the comfort of the indoor environment. In addition, punching holes in the wall not only requires a large amount of engineering, troublesome construction and installation, but also destroys the interior decoration, which is unsatisfactory for many consumers. At the same time, the inline clothes dryer also has the disadvantages of high power consumption and low drying efficiency.

Although the condensing cycle clothes dryers on the market do not directly discharge the hot and humid gas into the room, because they use the low-temperature reverse condensation of tap water to condense the hot and humid gas discharged from the outlet of the drum, the heat of the high-temperature gas after drying is not recycled. At the same time, the gas used for drying clothes is recycled in the pipeline, which has the problems of small drying air volume and large resistance, which makes the drying time 30 minutes longer than that of ordinary inline clothes dryers. 90 minutes, so this type of clothes dryer has the disadvantages of large water consumption, long drying time, high energy consumption, complicated control, and high cost.

Utility model content:

The object of the present invention is to consider the above problems and provide a clothes dryer that not only improves the comfort of the indoor environment, but also has short drying time, energy saving, and low power consumption, and has the functions of waste heat recycling and waste moisture recovery.

The technical solution of the present invention is: comprising a base, a housing installed on the base, a centrifugal wind wheel installed on the base at the lower part of the housing cavity and a driving mechanism for driving the drying cylinder and the centrifugal wind wheel to rotate, installed on the The drying cylinder and electric heating wire in the upper part of the housing cavity, wherein the bottom of the housing or the base is provided with an air inlet and an exhaust port, the electric heating wire is installed at the rear of the drying cylinder, and the front of the drying cylinder A first exhaust passage is provided, and the first exhaust passage communicates with the air inlet of the centrifugal wind wheel, the air outlet of the centrifugal wind rotor communicates with the hot air duct, the hot air duct communicates with the second exhaust duct, and the second exhaust duct communicates with the exhaust air duct. The air port communicates, and a total heat exchanger is provided between the hot air duct and the second exhaust duct to exchange heat between the hot and humid air discharged from the drying cylinder and the air entering the casing from the air inlet .

The above-mentioned total heat exchanger includes several layers of horizontally placed fins, the fins are corrugated, and the fins of the upper and lower adjacent layers are staggered and stacked at 90°, and the gas flows along the corrugations.

The above-mentioned total heat exchanger is made by punching aluminum foil or copper foil, and the thickness of the aluminum foil or copper foil is 0.005-0.4 mm.

The driving mechanism includes a motor, a pulley and a belt. The pulley is installed on the rotating shaft at one end of the motor. The centrifugal wind wheel is installed on the rotating shaft at the other end of the motor. The belt is respectively set on the outer wall of the drying cylinder and the pulley.

A plurality of air inlets are provided at the rear of the drying cylinder, and air outlets are provided at the front.

A filter for filtering clothes dander and impurities is arranged in the above-mentioned exhaust passage.

A hot air cover is provided on the outside of the above-mentioned electric heating wire. The rear part of the hot air cover is provided with a number of rear air inlet holes, and the front part is provided with a number of forward air holes along the outer side of the drying clothes cylinder.

A temperature control and induction device is installed between the electric heating wire and the air inlet in the above-mentioned hot air cover.

An air intake duct communicating with the air inlet is also installed on the base, and the total heat exchanger is arranged on the position between the hot air duct and the second exhaust duct and the air intake channel.

A filter screen is arranged at the above-mentioned air inlet or in the air inlet pipe.

Because the utility model adopts the structure that a full heat exchanger is arranged between the hot air pipe, the exhaust pipe and the air inlet channel, the hot and humid gas in the drying process passes through the exhaust channel and enters the hot air after the pressure is increased by the centrifugal wind wheel. In the pipe, the hot and humid gas exchanges heat with the air entering from the air inlet in the total heat exchanger. The high-humidity and hot gas releases heat and condenses the water vapor contained in it, which becomes a dry air flow at room temperature and is discharged from the dryer. The condensed water is collected and collected. Exhausted from the channel, the air entering from the air inlet gains heat and becomes a preheated airflow, and then enters the drying drum after being heated by the heating wire. Therefore, it not only prevents the high temperature and humid air from entering the room after drying, but Recycling waste heat and effectively recovering residual humidity effectively improves the comfort of indoor air temperature and humidity, greatly shortens drying time and reduces energy consumption.

Description of drawings:

Fig. 1 is a schematic diagram of the longitudinal section structure of the utility model.

FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1 .

Fig. 3 is a front view of the total heat exchanger of the present invention.

Fig. 4 is a left side view of Fig. 3 .

Detailed ways:

Example:

The structure diagram of the utility model is shown in Figure 1 and 2, including a base 20, a housing 5 installed on the base 20, a centrifugal wind wheel 12 installed on the base and located at the lower part of the housing 5 cavity and driving a dry clothes The driving mechanism for the rotation of the cylinder 7 and the centrifugal wind wheel 12, the drying cylinder 7 and the electric heating wire 2 installed in the upper part of the casing 5 cavity, wherein the bottom of the casing 5 or the base 20 is provided with an air inlet and an exhaust port , the electric heating wire 2 is installed on the rear part of the drying cylinder 7, and the front part of the drying cylinder 7 is provided with a first exhaust passage 9, and the first exhaust passage 9 communicates with the air inlet 23 of the centrifugal wind wheel, and the centrifugal The air outlet of the wind wheel communicates with the hot blast pipeline 13, the hot blast pipeline 13 communicates with the second exhaust pipeline 17, and the second exhaust pipeline 17 communicates with the exhaust port, and the hot blast pipeline 13 and the second exhaust pipeline 17 are arranged between There is a total heat exchanger 16 which can make the hot and humid gas discharged from the drying cylinder 7 exchange heat with the air entering the housing from the air inlet. In the present embodiment, the above-mentioned driving mechanism includes a motor 14, a pulley 22 and a belt 15, the pulley 22 is installed on the rotating shaft at one end of the motor 14, the centrifugal wind wheel 12 is installed on the rotating shaft at the other end of the motor 14, and the belt 15 is respectively set on the drying clothes On the outer wall of cylinder 7 and on pulley 22. The drying cylinder (7) is placed horizontally, with several air inlets (1) at the rear and air outlets 8 at the front.

As shown in Figures 3 and 4, the above-mentioned total heat exchanger 16 includes several layers of horizontally placed fins 161, and the fins 161 are corrugated or triangular or trapezoidal in shape. In this embodiment, the fins 161 are corrugated and adjacent up and down The layers of fins 161 are staggered and stacked at 90°, and the gas flows along the corrugation. The above-mentioned total heat exchanger 16 is made by stamping aluminum foil or copper foil, and the thickness of the aluminum foil or copper foil is 0.005-0.4 mm.

In order to prevent clothes dander and impurities from entering the centrifugal wind wheel, a filter 11 for filtering clothes dander and impurities is provided at the narrow position before the air enters the centrifugal wind wheel in the above-mentioned exhaust passage 9 .

A hot air cover 4 is provided on the outside of the above-mentioned electric heating wire 2 . The rear part of the hot air cover 4 is provided with a plurality of rear air inlet holes 3 , and the front part is provided with a plurality of forward air holes 6 along the outer side of the dry clothes cylinder 7 . In order to control the airflow temperature more accurately, a temperature control and induction device 21 is installed between the electric heating wire 2 and the air inlet 1 in the hot air cover 4 .

In consideration of the external appearance and the internal structure design requirements of the housing 5, an air intake duct 19 communicating with the air inlet is also installed on the above-mentioned base 20, and the total heat exchanger 16 is arranged between the hot air duct 13 and the second exhaust duct 17 and the air intake duct. 19 between positions. In order to prevent impurities in the air from entering the housing, a filter 18 is provided at the air inlet or in the air intake duct 19 .

When the clothes dryer of the utility model is working, the high-temperature and hot and humid gas in the drying process passes through the exhaust channel 9 and enters the hot air pipeline 13 after the pressure is increased by the centrifugal wind wheel 12. The air that enters in staggered directions performs heat exchange. The hot and humid air releases heat and condenses the water vapor contained in it, which becomes a dry air flow at room temperature and is discharged from the dryer. The condensed water is collected and discharged from the channel, while the air entering from the air inlet is The heat obtained becomes the preheated air flow, which enters the inside of the hot air cover 4 through the rear air inlet hole 3 and the forward air hole 6 opened on the hot air cover 4, and then enters the drying drum after being heated by the heating wire 2, and is controlled by the temperature control and induction device. 21 Control the temperature of the airflow, and then the airflow enters the drying cylinder 7 through the air inlet hole 1 at the rear of the drying cylinder 7 to dry the wet clothes. After drying the clothes, the high-temperature hot air containing a large amount of water vapor passes through the drying clothes The air outlet 8 at the front part of the cylindrical body 7 goes out, and so circulates until the clothes are dry.

)。从表中可知，经全热交换器后，进入的空气①的温度显著增高，排出的热空气③内水蒸气热量和热空气热量被充分回收。运行10分钟左右热回收率高达80％以上，运行20分钟后，余热回手率高达99％，采用本实用新型干衣机能显著降低能耗，缩短干衣时间，整体干衣时间缩短1/3-1/2，能耗降低30％-60％。Table 1 shows the results of putting 3 kg of wet clothes into the drying cylinder 7 of the dryer of this embodiment, and the two inlets and two outlets of the total heat exchanger 16 from the start of the dryer to half an hour of operation. The temperature change of the test, that is, in Figure 1, the air ① is at the inlet of the total heat exchanger, the air ② is at the outlet of the total heat exchanger, the exhausted hot air ③ is at the inlet of the total heat exchanger, and the exhausted air ④ is at the total heat exchanger The temperature data tested at four locations including the outlet (unit:

). It can be seen from the table that after passing through the total heat exchanger, the temperature of the incoming air ① increases significantly, and the heat of water vapor and heat of the hot air in the discharged hot air ③ are fully recovered. The heat recovery rate is as high as 80% after running for about 10 minutes, and the waste heat recovery rate is as high as 99% after running for 20 minutes. The utility model can significantly reduce energy consumption, shorten the drying time, and shorten the overall drying time by 1/3 -1/2, energy consumption reduced by 30%-60%.

Attached table 1: The change table of exhaust temperature and intake temperature at different times after the dryer is started

Claims (10)

1, a kind of dryer with recycling residual heat and surplus wet recovery function, comprise base (20), be installed in the housing (5) on the base (20), be installed in the centrifugal wind wheel (12) that is positioned at housing (5) bottom, chamber on the base and drive drying cylindrical shell (7) and the driving mechanism of centrifugal wind wheel (12) rotation, be installed in the drying cylindrical shell (7) and the electrical heating wire (2) of housing (5) chamber internal upper part, its middle shell (5) bottom or base (20) are provided with air inlet and exhaust outlet, electrical heating wire (2) is installed in the rear portion of drying cylindrical shell (7), the front portion of drying cylindrical shell (7) is provided with first exhaust passage (9), first exhaust passage (9) communicates with the air inlet (23) of centrifugal wind wheel, the air outlet of centrifugal wind wheel communicates with hot air duct (13), hot air duct (13) communicates with second exhaust pipe road (17), second exhaust pipe road (17) communicates with exhaust outlet, it is characterized in that being provided with between described hot air duct (13) and second exhaust pipe road (17) can making the hot and humid gas of discharging and enter the total-heat exchanger (16) that the air in the housing carries out heat exchange within it from air inlet from drying cylindrical shell (7).

2, the dryer with recycling residual heat and surplus wet recovery function according to claim 1, it is characterized in that above-mentioned total-heat exchanger (16) comprises the fin (161) of several layers horizontal positioned, fin (161) is corrugated, neighbouring layer fin (161) be 90 ° staggered stacked, gas downsea line flows.

3, the dryer with recycling residual heat and surplus wet recovery function according to claim 2 is characterized in that above-mentioned total-heat exchanger (16) made by aluminium foil or Copper Foil punching press, and the thickness of aluminium foil or Copper Foil is the 0.005-0.4 millimeter.

4, the dryer with recycling residual heat and surplus wet recovery function according to claim 1, it is characterized in that above-mentioned driving mechanism comprises motor (14), belt pulley (22) and belt (15), belt pulley (22) is installed in the end rotating shaft of motor (14), centrifugal wind wheel (12) is installed in the other end rotating shaft of motor (14), and belt (15) is set on the outer wall and belt pulley (22) of drying cylindrical shell (7).

5, the dryer with recycling residual heat and surplus wet recovery function according to claim 1 is characterized in that the rear portion of above-mentioned drying cylindrical shell (7) offers some air inlets (1), and the front portion is provided with air outlet (8).

6, the dryer with recycling residual heat and surplus wet recovery function according to claim 1 is characterized in that being provided with in the above-mentioned exhaust passage (9) filter (11) that filters clothes soft flocks and impurity.

7, the dryer with recycling residual heat and surplus wet recovery function according to claim 1, it is characterized in that above-mentioned electrical heating wire (2) outside is provided with air bells cap (4), the rear portion of air bells cap (4) offers some backs fresh air inlet (3), and the anterior outside along drying cylindrical shell (7) offers some preceding fresh air inlets (6).

8, the dryer with recycling residual heat and surplus wet recovery function according to claim 7 is characterized in that being equiped with between inherent electrical heating wire of above-mentioned air bells cap (4) (2) and the air inlet (1) temperature control and induction installation (21).

9, according to each described dryer of claim 1 to 8 with recycling residual heat and surplus wet recovery function, it is characterized in that also being equipped with on the above-mentioned base (20) admission line (19) that communicates with air inlet, total-heat exchanger (16) is arranged between hot air duct (13) and second exhaust pipe road (17) and the air intake passage (19) on the position.

10, the dryer with recycling residual heat and surplus wet recovery function according to claim 9 is characterized in that being provided with in above-mentioned air inlet place or the admission line (19) screen pack (18).

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