CN106592182B - Drying system and clothes drying device - Google Patents
Drying system and clothes drying device Download PDFInfo
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- CN106592182B CN106592182B CN201510929434.4A CN201510929434A CN106592182B CN 106592182 B CN106592182 B CN 106592182B CN 201510929434 A CN201510929434 A CN 201510929434A CN 106592182 B CN106592182 B CN 106592182B
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- evaporator
- air guide
- air
- shell
- drying system
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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
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
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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
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
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- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention discloses a drying system and a clothes drying device, which comprises a shell, a fan, an evaporator, a condenser, a compressor and a throttling device, wherein the evaporator and the condenser are relatively and fixedly arranged in the shell, an air channel is formed in the shell, the evaporator is positioned between the fan and the condenser along the extension direction of the air channel, the evaporator is obliquely arranged and is provided with a high end and a low end which are relatively arranged, the low end of the evaporator is relatively close to the fan, the high end of the evaporator is relatively close to the condenser, the surfaces of the two sides of the evaporator are respectively a windward surface and a leeward surface, the windward surface faces the fan, the leeward surface faces the condenser, and an air guide mechanism which protrudes towards the inner cavity of the shell is arranged between the fan and the evaporator. The air guide mechanism is arranged between the fan and the evaporator, so that the air channel direction on the surface of the evaporator is changed, the air which is easy to concentrate at the corners of the evaporator and the shell flows to the surface of the evaporator as much as possible, and the uniformity of the air field on the surface of the evaporator is improved.
Description
Technical Field
The invention relates to the field of drying, in particular to a drying system with a heat pump and a clothes drying device.
Background
The heat pump is generally composed of four main parts, namely a compressor, a condenser, an evaporator and a throttling device, and is internally filled with proper circulating working media to serve as an efficient heating device for providing dry hot air for drying equipment. For example, the existing heat pump type washing and drying integrated machine comprises a roller and a shell, wherein a fan, an evaporator and a condenser are arranged in the shell in sequence and are relatively fixed, two ends of the shell are respectively connected with a front opening and a rear opening of the roller, the heat pump system enables dry hot air to enter the roller to take away moisture of a load (clothes to be dried), air is exhausted from the roller, and the air is dehumidified by the evaporator and heated by the condenser after passing through the fan, enters the roller again and enters the next working cycle to dry the clothes in the roller.
According to the working process, in the drying process, hot air passing through the condenser is blown into the roller to take out wet air, and moisture of the wet air is condensed and discharged after passing through the evaporator. However, the wind passing through the surface of the evaporator is easily gathered on the local surface of the evaporator, especially on the corners of the evaporator and the shell, so that the wind field on the surface of the evaporator is uneven, and the heat exchange performance of the evaporator is reduced.
Disclosure of Invention
The invention aims to provide a drying system and a clothes drying device which can improve the distribution uniformity of a wind field on the surface of an evaporator so as to improve the heat exchange performance of the evaporator.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a drying system, includes casing, fan, evaporimeter, condenser, compressor and throttling arrangement, evaporimeter, condenser relatively fixed set up in the casing, the casing is formed with air passage, along air passage's extending direction, the evaporimeter be located the fan with between the condenser, the evaporimeter slope sets up and has the high-end and the low side of relative setting, the low side of evaporimeter is close to relatively the fan, the high-end of evaporimeter is close to relatively the condenser, evaporimeter both sides surface is windward side and leeward side respectively, windward side orientation the fan, leeward side orientation the condenser, the casing is in the fan with be provided with the protruding wind guiding mechanism who stretches towards the casing inner chamber between the evaporimeter.
Further, the air guide mechanism has an air guide surface extending toward the windward side of the evaporator, and the air guide surface is substantially planar or curved;
when the wind guide surface is approximately planar, the plane of the wind guide surface is intersected with the windward surface of the evaporator to form an intersection line, and the distance between the intersection line and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator;
when the air guide surface is approximately curved, a tangent line of a lowest position point of the air guide surface is intersected with a windward surface of the evaporator along the vertical direction, and the distance between the intersection and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator.
Further, the air guide surface is substantially curved, and the air guide mechanism has a curved shape that overhangs and protrudes from the inside of the casing toward the surface of the evaporator, or the air guide mechanism has a curved shape that protrudes from the inside of the casing toward the surface of the evaporator and is connected to both sides in the width direction of the casing.
Furthermore, the air guiding surface is substantially planar, the air guiding mechanism is an air guiding plate, the air guiding plate protrudes from the inner side of the shell towards the surface of the evaporator and is connected with two sides of the shell in the width direction, or the air guiding plate overhangs and protrudes from the inner side of the shell towards the surface of the evaporator;
or the air guide surface is approximately planar, the air guide mechanism is in the form of an air guide grid and is provided with at least one air guide channel, the inlet of the air guide channel faces the fan, the outlet of the air guide channel faces the windward side of the evaporator, and the air guide surface is formed on the side surface of the air guide channel; the air guide grid is provided with an upper end and a lower end which are oppositely arranged, the upper end of the air guide grid is connected with the shell, and an air flow channel is formed between the lower end of the air guide grid and the inner side of the shell, so that the air guide grid is arranged in a suspension manner; or the upper end and the lower end of the air guide grid are fixedly connected with the shell.
Further, the air guide surface is substantially curved, the air guide mechanism is a curved body having a downwind surface connected to the air guide surface, and a constricted air guide passage is formed between the air guide mechanism and the windward surface of the evaporator.
Furthermore, the air guide mechanism is an air guide plate, the air guide plate is provided with a fixing part and an extending part, the fixing part is integrally connected with the upper inner side of the shell, the extending part integrally extends from the fixing part, an air guide channel for air to flow is reserved between the extending part and the lower inner side of the shell, the vertical distance between the extending part of the air guide plate and the windward side of the evaporator is not less than 40mm, and the height of the extending part of the air guide plate is lower than the high end of the evaporator along the vertical direction;
or the air guide mechanism is in the form of an air guide grid, the two or more air guide channels are arranged in parallel, and the range of the included angle omega between the air guide channels and the horizontal direction is 130-170 degrees.
Furthermore, the air guide mechanism is an air guide plate which is obliquely arranged relative to the vertical direction, and the included angle theta between the air guide plate and the vertical direction is 20-50 degrees.
Further, the evaporator is a micro-channel heat exchanger, wherein the evaporator is a multi-layer heat exchanger with more than two layers, the evaporator comprises two collecting pipes and flat pipes with two ends respectively communicated with the collecting pipes, each flat pipe comprises a main body part, fins are arranged between the adjacent main body parts of the evaporator, the collecting pipes of the evaporator are approximately horizontally arranged, the main body parts of the flat pipes of the evaporator are inclined, and the range of an angle α formed by the main body parts and the horizontal direction is equal to or larger than 23 degrees and equal to or less than α degrees and equal to or less than 65 degrees.
Furthermore, the flat tubes of the evaporator are provided with bending reversing parts, the main body parts of the flat tubes are located between the bending reversing parts and the collecting pipes or between the bending reversing parts, the main body parts of the flat tubes of the evaporator are arranged in equal length, or the length of the main body part of one flat tube is greater than that of the main body part of the other flat tube.
In order to achieve the purpose, the invention also adopts the following technical scheme: the utility model provides a clothes drying device, includes cylinder, drying system is as in above-mentioned technical scheme drying system, the cylinder has relative front side and the rear side that sets up, and this cylinder front side forms air intake, rear side and forms the air outlet, drying system's casing is close to cylinder side top, this casing is through setting up induced air portion and connecting the cylinder air outlet, and this casing is through setting up the air-supply portion and connecting the cylinder air intake.
The air guide mechanism is arranged between the fan and the evaporator, so that the air duct direction on the surface of the evaporator can be changed, the air flow is guided to uniformly flow to the surface of the evaporator as much as possible, the uniformity of the wind field distribution on the surface of the evaporator is improved, the air flow is prevented from being gathered at the corners of the evaporator and the shell, the heat exchange performance of the evaporator is reduced, and the heat exchange performance of the evaporator is relatively improved.
Drawings
FIG. 1 is a schematic view showing the internal structure of a clothes drying apparatus of example 1 of the present invention with a part of a cabinet removed;
fig. 2 is a schematic partial cross-sectional view of a drying system in a clothes drying apparatus of embodiment 1, wherein a dotted frame is a drum, and arrows generally indicate a condition that an air flow between the drying system and the drum passes through;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic partial sectional view of a drying system according to embodiment 2 taken along the line B-B in FIG. 2;
FIG. 5 is a schematic partial cross-sectional view of an embodiment of a drying system in example 3 taken along the line B-B in FIG. 2;
FIG. 6 is a schematic partial sectional view of another embodiment of a drying system in accordance with example 3 taken along the line B-B in FIG. 2;
FIG. 7 is a schematic view, partially in section, of the housing of the drying system taken along the line C-C in FIG. 5;
fig. 8 is a schematic partial cross-sectional view of a drying system in a clothes drying apparatus of embodiment 4, wherein a dashed box represents a drum and arrows generally indicate a condition that an air flow between the drying system and the drum passes through;
FIG. 9 is a schematic partial sectional view of a drying system according to embodiment 5 taken along the line D-D in FIG. 8;
FIG. 10 is a schematic view of a partial cross-section of one embodiment of a drying system of example 6 taken along the line D-D in FIG. 8;
fig. 11 is a partial sectional view of another embodiment of the drying system in the embodiment 6 taken along the line D-D in fig. 8.
Detailed Description
Example 1
Referring to fig. 1 and 2, the laundry drying apparatus 100 of the present embodiment includes a cabinet 1, a drying system 2, and a drum 3, the drum 3 being rotatably disposed inside the cabinet 1, the drying system 2 being disposed above the drum 3. Here, the upper includes a right upper side and a side upper side. The cabinet 1 includes a front wall 101 and a rear wall (not shown) disposed opposite to each other, and a side wall 102 connected between the front wall 101 and the rear wall. A door for opening or closing the opening of the front surface of the drum 3 is assembled to the front wall 101 of the cabinet 1. Specifically, the drum 3 includes a front side (not shown) and a rear side 31, wherein the front side of the drum 3 is disposed opposite to the front wall 101 of the cabinet 1, and the rear side 31 of the drum 3 is disposed opposite to the rear wall of the cabinet 1. The drying system 2 includes a substantially horizontally disposed housing 21 and a connecting portion 22 disposed at two ends of the housing 21, the connecting portion 22 includes an air inducing portion 221 and an air supplying portion 222, the air inducing portion 221 connects one end of the housing 21 with the rear side 31 of the drum 3, the air supplying portion 222 connects the other end of the housing 21 with the front side of the drum 3 to form an air passage having an air circulation loop, and the air flows out from an air outlet of the rear side 31 of the drum 3, enters the housing 21, and flows into the drum from an air inlet of the front side of the drum 3. The air guide 221 and the air supply 222 may be provided integrally with the housing 21 or separately. In the present embodiment, the air guide 221 is provided separately from the casing 21, and the air blowing part 222 is provided integrally with the casing 21.
Referring to fig. 2 and 3, the drying system 2 further includes an evaporator 23, a condenser 24, a throttling device (not shown), a fan 25, a compressor 26, a connection line (not shown), and a refrigerant (not shown) filled in the line. The heat pump of the drying system comprises a compressor 26, a condenser 24, an evaporator 23, a throttle (not shown), connecting lines (not shown) and a refrigerant charge in the system. The heat pump is used for absorbing heat in a low-temperature environment and releasing heat to a high-temperature environment by using the compressor.
When the drying system operates, the heat pump operates, the compressor 26 operates, and the low-temperature and low-pressure refrigerant gas is sucked by the compressor 26 and is compressed to become high-temperature and high-pressure refrigerant gas; then enters the condenser 24 to be cooled into a low-temperature high-pressure refrigerant by relatively low-temperature air, and the air is heated and warmed at the same time; then the refrigerant is throttled by the throttling device and changed into low-temperature low-pressure gas-liquid two-phase refrigerant, the low-temperature low-pressure gas-liquid two-phase refrigerant enters the evaporator 23, heat is absorbed in the evaporator 23 and changed into low-temperature low-pressure gas refrigerant, the air flowing through the evaporator is cooled by the refrigerant, water vapor in the air is condensed to form moisture, and the air humidity is reduced; the gaseous refrigerant leaving the evaporator 23 enters the compressor 26 again to be compressed and liquefied, and thus circulates.
The air circulation system includes a housing 21, a fan 25, and the drum 3. The trend of the air duct is as follows: the fan 25 draws air on the rear side of the drum 3 into the air guide 221, enters the casing 21, passes through the evaporator 23 and the condenser 24 provided in the casing 21, and flows back into the drum 3. The working principle is as follows: the air in the casing 21 is heated and heated when passing through the condenser 24 to become high-temperature air 201, and the high-temperature air 201 enters the drum from the front surface of the drum 3, namely a door seal, through the air supply part 222, so that the moisture contained in the clothes is evaporated into water vapor and then becomes high-temperature high-humidity air; the high-temperature and high-humidity air enters the housing 21 from the back of the drum 3 through the air inducing portion 221, and then is cooled while flowing through the evaporator 23, and is reduced to the low-temperature dry air 202, meanwhile, the high-temperature and high-humidity air is condensed on the surface of the evaporator 23 and is condensed into water, the low-temperature dry air 202 is heated and heated by the condenser 24 to become the high-temperature air 201, and the air is circulated to fulfill the drying requirement of the clothes.
With continued reference to fig. 1 and 2, the housing 21 includes a first housing 211 and a second housing 212, and the first housing 211 and the second housing 212 are separated and relatively fixed by an assembling connection, so as to facilitate assembling and arranging of internal components. The evaporator accommodating portion 213, the condenser accommodating portion 214 and the fan accommodating portion 215 are disposed in the inner cavity of the housing 21, the evaporator 23 is relatively fixedly disposed in the evaporator accommodating portion 213, the condenser 24 is relatively fixedly disposed in the condenser accommodating portion 214, the fan 25 is relatively fixedly disposed in the fan accommodating portion 215, and the lower portion of the housing where the fan 25 is disposed is connected to the air inducing portion 221. The housing 21 forms an air channel for flowing air, along the extending direction of the air channel, the evaporator 23 is located between the fan 25 and the condenser 24, the evaporator 23 is obliquely arranged, the evaporator 23 has a high end 233 and a low end 234 which are oppositely arranged, the high end 233 of the evaporator 23 is relatively close to the condenser 24, the low end 234 of the evaporator 23 is relatively close to the fan 25, the two side surfaces of the evaporator 23 are a windward surface 231 and a leeward surface 232 respectively, the windward surface 231 faces the fan 25, the leeward surface 232 faces the condenser 24, and the windward surface 231 and the leeward surface 232 are inclined relative to the vertical direction. The condenser 24 is also tilted, with the condenser 24 having an oppositely disposed high end 241 and a low end 242, the high end 241 of the condenser 24 being relatively close to the evaporator 23 and the low end 242 of the condenser 24 being relatively far from the evaporator 23.
Because the evaporator 23 is arranged in the shell in an inclined manner, the wind sent by the fan 25 directly enters the inclined windward side 231 thereof, so that the wind is easy to gather at the corners of the evaporator and the shell, and the wind field on the surface of the evaporator is relatively uneven; in this embodiment, the drying system 2 is provided with an air guiding mechanism protruding toward the inner cavity of the casing between the fan 25 and the evaporator 23 along the extending direction of the air channel, so that the air flows relatively uniformly through the windward side of the evaporator, the air guiding mechanism has an air guiding surface extending toward the windward side 231 of the evaporator, and the air guiding surface is substantially planar or curved. The air guiding mechanism in front of the windward side 231 of the evaporator can guide the air uniformly to the surface of the evaporator, so as to avoid a large amount of air from accumulating between the high end of the evaporator and the shell. When the wind guide surface is approximately planar, the plane of the wind guide surface is intersected with the windward surface of the evaporator to form an intersection line, and the distance between the intersection line and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator; when the air guide surface is approximately curved, a tangent line of the lowest position point of the air guide surface is intersected with the windward surface of the evaporator along the vertical direction, and the distance between the intersection and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator. Within the above range, the planar or curved wind guide surface can make the wind discharged from the fan blow toward the middle and lower part of the windward side of the evaporator as much as possible along the direction of the wind guide surface, so that the wind on the windward side surface is relatively uniform.
In one embodiment, the air guide surface is substantially curved, and the air guide mechanism has a curved shape that overhangs and protrudes from the inside of the casing toward the surface of the evaporator, or the air guide mechanism has a curved shape that protrudes from the inside of the casing toward the surface of the evaporator and is connected to both sides in the width direction of the casing. Specifically, as shown in fig. 2 and 3, the wind guiding mechanism has a curved body shape protruding from the inside of the housing toward the surface of the evaporator and connected to both sides of the housing in the width direction, the wind guiding mechanism is specifically a curved body 216, the curved body 216 is integrally formed on the housing 21, the curved body 216 has a wind guiding surface 2161 extending toward the windward side 231 of the evaporator, and has a windward side 2162 connected to the wind guiding surface 2161, a necking wind guiding channel 2164 is formed between the wind guiding mechanism and the windward side 231 of the evaporator, and the inner diameter of the wind guiding channel 2164 is not less than 40mm, so as to ensure that the wind is uniformly distributed on the windward side of the evaporator, so as to prevent most of the wind from being blocked at the middle and lower end of the evaporator, and thus ensure that the wind on the windward side of the evaporator is relatively uniform. When wind is sucked through the air passage in front of the evaporator, the wind direction is changed by the blocking of the wind guide surface 2161, and a part of the wind enters the evaporator approximately vertically along the wind guide surface 2161, and another part of the wind moves towards the high end 233 of the evaporator 23 along the downwind surface 2162, so that a large amount of wind is effectively prevented from moving towards the high end 233 of the evaporator 23, which helps to improve the heat exchange performance of the evaporator.
In this embodiment, both the evaporator 23 and the condenser 24 are microchannel heat exchangers, which have relatively small volume and high heat exchange efficiency, and thus can be disposed above or laterally above the drum. The evaporator 23 may be a multilayer heat exchanger, specifically, two or more layers, the evaporator 23 includes two collecting pipes 235, flat pipes whose two ends are respectively communicated with the collecting pipes 235, the flat pipes include a bending reversing part 236 and a main body part 237, the main body part 237 of the flat pipe is located between the bending reversing part 236 and the collecting pipe 235 or the main body part 237 of the flat pipe is located between the bending reversing parts 236, the main body part 237 of the flat pipe of the evaporator 23 is set at equal length, or the length of the main body part of the partial flat pipe is greater than that of the main body part of the other partial flat pipe. The evaporator 23 is provided with fins for heat exchange between the adjacent main body portions 237; in this embodiment, the main body portions 237 of the flat tubes are not equal in length, the length of a part of the main body portions of the flat tubes is greater than that of another part of the main body portions of the flat tubes, and the windward side 231 is located on one side of the main body portion 237 of the evaporator; likewise, the condenser 24 may be a multi-layer heat exchanger, such as a multi-layer condenser having two or more layers; the flat tubes respectively communicated with the collecting pipes comprise main body parts and bent reversing parts, and fins for heat exchange are arranged between the adjacent flat tubes of the main body parts.
In addition, both the condenser 24 and the evaporator 23 are obliquely arranged, at least one collecting pipe 235 of the evaporator 23 is located at a relatively lower position, at least one bending reversing part 236 of one flat pipe is located at a relatively higher position, namely the evaporator 23 is obliquely arranged, the collecting pipe 235 of the evaporator is approximately horizontally arranged, namely the angle formed by the collecting pipe 235 and the horizontal plane is within +/-3 degrees, and a main body part 237 of the flat pipe is obliquely arranged, so that the heat exchange area can be increased and the requirement of the space of the part can be met, similarly, at least one collecting pipe of the condenser 24 is located at a relatively lower position, the bending part of at least one flat pipe is located at a relatively higher position, the collecting pipe of the condenser is approximately horizontally arranged, namely the angle formed by the collecting pipe and the horizontal plane is within +/-3 degrees, the main body part of the flat pipe is obliquely arranged, wherein the range of the main body part of the condenser 24 and the horizontal direction is equal to or more than β and equal to 65 degrees, the range of the inclination angle formed by the main body part of the evaporator 23 and the horizontal direction is equal to or less than or equal to β and equal to or equal to 65 degrees, the range of the inclination angle formed by the main body part of the horizontal direction of the condenser 23 and equal to 3565 degrees, and equal to or less than or equal to 7 degrees, and equal to or equal to 7 degrees, when the inclination angle formed by the heat exchange area of the heat exchanger 3565 degrees, the heat exchange area of the heat exchanger 3530 degrees, the heat exchange area of the heat exchanger 23 and equal to or less than or equal to or less than 30 degrees, the height of the heat exchange area of the heat exchanger 23.
Example 2
Referring to fig. 4, the structure and operation of the clothes drying apparatus of the present embodiment are substantially the same as those of embodiment 1, and the main difference is that along the extending direction of the air channel, the air guiding mechanism between the evaporator 23 and the fan 25 has an air guiding surface extending toward the windward side 231 of the evaporator 23, and the air guiding surface is substantially planar, wherein the air guiding mechanism is an air guiding plate 217, the air guiding plate 217 protrudes from the inner side of the casing toward the surface of the evaporator and is connected with both sides of the casing in the width direction, or the air guiding plate 217 protrudes from the inner side of the casing toward the surface of the evaporator in a hanging manner; the deflector 217 used in this embodiment is different from the curved body 216 used in embodiment 1.
The air deflector 217 of this embodiment is located in the air passage between the evaporator 23 and the fan 25. The air deflector 217 is provided with a fixed part 2171 and an extending part 2172 which are oppositely arranged, the fixed part 2171 of the air deflector 217 is integrally connected with the upper inner side of the shell 21, the extending part 2172 is integrally extended from the fixed part, an air guiding channel 2173 for air flowing is reserved between the extending part 2172 of the air deflector 217 and the lower inner side of the shell 21, the vertical distance between the extending part 2172 of the air deflector and the windward side 231 of the evaporator is not less than 40mm, and the height of the extending part 2172 of the air deflector 217 is lower than the high end of the evaporator along the vertical direction. The air deflector 217 is provided with an air deflecting surface 2174 extending towards the windward side 231 of the evaporator, the plane of the air deflecting surface 2174 intersects with the windward side 231 of the evaporator to form an intersection line, and the distance between the intersection line and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator; within this range, the wind deflector 217 directs the wind as uniformly as possible to the windward side of the evaporator, thereby preventing the wind from intensively flowing to the high end of the evaporator. In this embodiment, the air deflector 217 is integrally disposed with the first housing 211, the fixing portion 2171 of the air deflector 217 is integrally connected with the first housing 211, the protruding portion 2172 of the air deflector is an end portion of the air deflector where the fixing portion 2171 extends toward the inner cavity of the housing, the housing is conveniently processed after the air deflector 217 is integrally disposed, and the air deflector 217 can be attached after the housing is injection molded. In addition, the air deflector 217 is arranged obliquely relative to the vertical direction, the included angle theta between the air deflector 217 and the vertical direction is 20-50 degrees, when the included angle theta is too small or too large, the wind deflector 217 has relatively small blocking effect on wind, and the wind can still move to the high end 233 of the evaporator 23 in a concentrated mode. When wind is drawn through the air passage in front of the evaporator, a portion of the wind enters the evaporator approximately vertically along the wind guide surface 2174 of the wind guide plate 217 by the guiding action of the wind guide plate 217, and then the wind is spread sideways along the surface of the evaporator 23, thereby advantageously preventing wind from collecting at the high end of the evaporator and in the corners of the housing.
Example 3
Referring to fig. 5-7, the structure, operation and operation of the clothes drying device of the present embodiment are substantially the same as those of embodiment 1, and the main difference is that along the extending direction of the air channel, the air guiding mechanism between the evaporator 23 and the fan 25 has an air guiding surface 2181 extending towards the windward side 231 of the evaporator, the air guiding surface 2181 is substantially planar, the plane of the air guiding surface 2181 intersects with the windward side 231 of the evaporator to form an intersection line, and the distance between the intersection line and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator; the air guiding mechanism is in the form of an air guiding grid 218 and is provided with at least one air guiding channel 2180, an inlet of the air guiding channel 2180 faces the fan, an outlet of the air guiding channel 2180 faces the windward side 231 of the evaporator, and an air guiding surface 2181 is formed on the side surface of the air guiding channel 2180; the air guide grille 218 adopted in the present embodiment is different from the curved body 216 adopted in embodiment 1.
Referring to fig. 5, the air guiding mechanism is in the form of an air guiding grid 218 and is provided with at least one air guiding channel 2180, the at least one air guiding channel 2180 is communicated with an air channel between the fan 25 and the evaporator 23, the air guiding channel 2180 may be arranged substantially in parallel, an included angle ω between the air guiding channel 2180 and the horizontal direction is generally 130-. However, if the angle ω between the air guiding passage 2180 and the horizontal direction is too large, the air guiding passage 2180 tends to be parallel to the horizontal direction, so that the air coming out from the air guiding passage still easily flows to the high end of the evaporator, and the air at the high end is easily relatively dense. When the included angle is within the above range, the wind can be intentionally guided to the middle of the surface of the evaporator 23 in the direction of the wind guide passage 2180, and then gradually moves to the two sides, so as to realize the uniformity of the wind field on the surface of the evaporator, thereby improving the heat exchange efficiency of the evaporator. The air guide grid 218 may be suspended or supported, and has an upper end and a lower end opposite to each other, the upper end of the air guide grid is connected to the housing, and an air flow channel is formed between the lower end of the air guide grid and the inner side of the housing, so that the air guide grid is suspended; or the upper end and the lower end of the air guide grid are fixedly connected with the shell. Specifically, as shown in fig. 5, the upper end of the air guiding grille 218 is connected to the first housing 211, the lower end of the air guiding grille 218 is connected to the second housing 212, and a groove is disposed at a position of the second housing 212 adjacent to the lower end of the air guiding grille 218, and the groove is matched with the lower end of the air guiding grille 218 to relatively fix the air guiding grille 218 and the second housing 212. Alternatively, as shown in fig. 6, the air guide grill 218 is suspended, an air flow passage 2183 for air to flow is left between the air guide grill 218 and the housing 21, the upper end of the air guide grill 218 is connected to the first housing, and the air flow passage 2183 is left between the lower end of the air guide grill 218 and the second housing. In this embodiment, the air guiding grille 218 is integrally disposed with the housing 21, and the housing can be formed to have an air guiding grille structure, which facilitates the disposition of the housing structure. In addition, the air guide passage 2180 has an air guide opening 2182, the air guide opening 2182 includes an air inlet and an air outlet, referring to fig. 7a and 7b, the shape of the air guide opening 2182 may be square or circular, but is not limited thereto, and the shape of the air guide opening 2182 may be designed into various shapes as required. As the wind is drawn through the air passageway in front of the evaporator, it passes through the wind-guiding grille 218 and enters the evaporator approximately vertically along the wind-guiding surface and slowly spreads along the windward surface of the evaporator to form a relatively uniform wind field over the surface of the evaporator 23 to avoid wind from collecting at the high end 233 of the evaporator 23 and the corners of the housing.
Example 4
Referring to fig. 8, the structure and operation of the clothes drying apparatus of this embodiment are substantially the same as those of embodiment 1, and the main difference is that the evaporator 23 'in this embodiment includes two collecting pipes 235', flat tubes with two ends respectively communicating with the collecting pipes 235 ', the flat tubes are bent to form a bent reversing part 236' and a main body part 237 ', and fins for heat exchange are disposed between adjacent flat tubes of the main body part 237'; the main body part 237 'of the flat tube is positioned between the bending reversing part 236' of the flat tube and the collecting pipe 235 ', and the main body part 237' is equal in length. For example, when the evaporator is a two-layer heat exchanger, the evaporator 23 ' includes two collecting pipes 235 ' and flat pipes, the flat pipes are bent to form two main body portions 237 ', the main body portions 237 ' are located between the collecting pipes 235 ' and the bent direction-changing portions 236 ', and the two main body portions 237 ' are equal in length. In other words, two headers 235' are arranged side by side. Thus, when wind blows from the surface of the evaporator 23 ', the wind enters the surface of the evaporator perpendicularly and can completely pass through the main body part 237' without being blocked by other parts, thereby ensuring that the wind passing through the fin area is relatively uniform, ensuring that the wind field on the surface of the evaporator is relatively uniform, and effectively improving the heat exchange capacity of the evaporator. In this embodiment, a wind guiding mechanism is disposed between the fan 25 and the evaporator 23' along the extending direction of the air channel, and the wind guiding mechanism is a curved body 216 protruding from the housing 21 toward the surface of the evaporator, and the specific structure and function of the curved body 216 are the same as those shown in embodiment 1, and are not described again here.
Example 5
Referring to fig. 9, the structure and operation of the clothes drying apparatus of this embodiment are substantially the same as those of embodiment 2, and the main difference is that the evaporator 23 'in this embodiment includes at least two collecting pipes 235', flat tubes with two ends respectively communicated with the collecting pipes 235 ', the flat tubes are bent to form a bent reversing part 236' and a main body part 237 ', and fins for heat exchange are disposed between adjacent flat tubes of the main body part 237'; the main body part 237 'of the flat tube is positioned between the bending reversing part 236' of the flat tube and the collecting pipe 235 ', and the main body part 237' is equal in length. In other words, the headers 235' are arranged side by side. Thus, when wind blows from the surface of the evaporator 23 ', the wind enters the surface of the evaporator perpendicularly and can completely pass through the main body part 237' without being blocked by other parts, thereby ensuring that the wind passing through the fin area is relatively uniform, ensuring that the wind field on the surface of the evaporator is relatively uniform, and effectively improving the heat exchange capacity of the evaporator. In this embodiment, an air guiding mechanism is disposed between the fan 25 and the evaporator 23' along the extending direction of the air channel, and the air guiding mechanism is an air guiding plate 217, and the specific structure and function of the air guiding plate 217 are the same as those shown in embodiment 2, and are not described herein again.
Example 6
Referring to fig. 10 to 11, the structure and operation of the clothes drying apparatus of this embodiment are substantially the same as those of embodiment 3, and the main difference is that the evaporator 23 'in this embodiment includes at least two collecting pipes 235', flat pipes whose two ends are respectively communicated with the collecting pipes 235 ', the flat pipes are bent to form a bent reversing part 236' and a main body part 237 ', and fins for heat exchange are disposed between adjacent flat pipes of the main body part 237'; the main body part 237 'of the flat tube is positioned between the bending reversing part 236' of the flat tube and the collecting pipe 235 ', and the main body part 237' is equal in length. In other words, the headers 235' are arranged side by side. Thus, when wind blows from the surface of the evaporator 23 ', the wind enters the surface of the evaporator perpendicularly and can completely pass through the main body part 237' without being blocked by other parts, thereby ensuring that the wind passing through the fin area is relatively uniform, ensuring that the wind field on the surface of the evaporator is relatively uniform, and effectively improving the heat exchange capacity of the evaporator. In this embodiment, an air guiding mechanism is disposed between the fan 25 and the evaporator 23' along the extending direction of the air channel, and the air guiding mechanism is an air guiding grille 218, and the specific structure and function of the air guiding grille 218 are the same as those shown in embodiment 3, and are not described again here.
The uniformity of the wind field at the evaporator surface of comparative examples 1-6 was calculated as follows.
In examples 1 to 6, the inclination angle α formed by the evaporator and the horizontal direction is 30 °, and in examples 3 and 6, the air guide grille 218 is arranged in such a way as to have the air flow passage 2183 with the housing 21, the experimental data of multiple repeated simulation experiments show that the uniformity of the distribution of the wind field on the surface of the evaporator in the above embodiments is improved, and the calculation results of the simulation simulations listed in the following table 1 are specifically referred to.
TABLE 1 comparison table of surface wind field uniformity coefficient of evaporator
| Scheme(s) | |V(mean)-Vi|A | V(mean) | A | Coefficient of uniformity |
| Example 1 | 0.008329647 | 2.4382312 | 0.015118863 | 0.88701974 |
| Example 2 | 0.006660651 | 2.4479303 | 0.015118863 | 0.910015342 |
| Example 3 | 0.006325186 | 2.4459892 | 0.015118863 | 0.914479614 |
| Example 4 | 0.002734936 | 2.420614 | 0.015118863 | 0.962634349 |
| Example 5 | 0.004224157 | 2.4155762 | 0.015118863 | 0.942167738 |
| Example 6 | 0.002998468 | 2.412322 | 0.015118863 | 0.958893074 |
The values of the coefficients listed in the above table are roughly explained below, where the symbol a is the minimum area of the air flow passing through the evaporator, specifically the rectangular area with a length of 135.2mm and a width of 112mm, and the evaporators used in the calculations of examples 1-6 are substantially the same, where the main body portions of the evaporators selected for examples 1-3 are not equal in length, and the main body portions of the evaporators selected for examples 4-6 are equal in length.
The symbol Vi is the velocity of each grid in the case of dividing the evaporator surface into n grids.
The notation V (mean) is the surface average velocity of the evaporator surface.
The consistency coefficient is used for representing the uniformity of the wind field distribution on the surface of the evaporator, the consistency coefficient is a value below 1, the higher the consistency coefficient is, the more uniform the wind field distribution is, and otherwise, the more nonuniform the wind field distribution is. As can be seen from table 1 above, the uniformity coefficient of examples 1 to 6 is close to 1, which indicates that the arrangement of the wind guide mechanism between the fan and the evaporator in examples 1 to 6 has a certain regulating effect on the wind field on the surface of the evaporator, and is helpful to improve the uniformity of the wind field on the surface of the evaporator; further, as can be seen from the comparison of the consistency coefficients of examples 4 to 6 and examples 1 to 3, in examples 4 to 6, when the main body of the evaporator is equal in length, the wind guide mechanism is disposed between the evaporator and the fan, so that the uniformity of the wind field on the surface of the evaporator is significantly improved.
It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.
Claims (9)
1. A drying system comprises a shell, a fan, an evaporator, a condenser, a compressor and a throttling device, wherein the evaporator and the condenser are relatively fixedly arranged in the shell, the shell is provided with an air channel, the evaporator is positioned between the fan and the condenser along the extension direction of the air channel, the evaporator is obliquely arranged and is provided with a high end and a low end which are relatively arranged, the low end of the evaporator is relatively close to the fan, the high end of the evaporator is relatively close to the condenser, the two side surfaces of the evaporator are respectively a windward surface and a leeward surface, the windward surface faces the fan, the leeward surface faces the condenser, and a wind guide mechanism which protrudes towards the inner cavity of the shell is arranged between the fan and the evaporator;
the air guide mechanism is provided with an air guide surface extending towards the windward side of the evaporator, and the air guide surface is approximately planar or curved;
when the wind guide surface is approximately planar, the plane of the wind guide surface is intersected with the windward surface of the evaporator to form an intersection line, and the distance between the intersection line and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator;
when the air guide surface is approximately curved, a tangent line of a lowest position point of the air guide surface is intersected with a windward surface of the evaporator along the vertical direction, and the distance between the intersection and the lower end of the evaporator is one quarter to three quarters of the length of the evaporator.
2. The drying system of claim 1, wherein: the air guide surface is substantially curved, and the air guide mechanism has a curved shape which is protruded from the inner side of the casing toward the surface of the evaporator in a suspended manner, or has a curved shape which is protruded from the inner side of the casing toward the surface of the evaporator and is connected to both sides in the width direction of the casing.
3. The drying system of claim 1, wherein: the air guide surface is approximately planar, the air guide mechanism is an air guide plate, the air guide plate protrudes from the inner side of the shell towards the surface of the evaporator and is connected with two sides of the shell in the width direction, or the air guide plate overhangs and protrudes from the inner side of the shell towards the surface of the evaporator;
or the air guide surface is approximately planar, the air guide mechanism is in the form of an air guide grid and is provided with at least one air guide channel, the inlet of the air guide channel faces the fan, the outlet of the air guide channel faces the windward side of the evaporator, and the air guide surface is formed on the side surface of the air guide channel; the air guide grid is provided with an upper end and a lower end which are oppositely arranged, the upper end of the air guide grid is connected with the shell, and an air flow channel is formed between the lower end of the air guide grid and the inner side of the shell, so that the air guide grid is arranged in a suspension manner; or the upper end and the lower end of the air guide grid are fixedly connected with the shell.
4. The drying system of claim 2, wherein: the air guide surface is approximately curved, the air guide mechanism is a curved body, the curved body is provided with a downwind surface mutually connected with the air guide surface, and a necking-shaped air guide channel is formed between the air guide mechanism and the windward surface of the evaporator.
5. The drying system of claim 3, wherein: the air guide mechanism is an air guide plate, the air guide plate is provided with a fixing part and an extending part, the fixing part is integrally connected with the upper inner side of the shell, the extending part integrally extends from the fixing part, an air guide channel for air to flow is reserved between the extending part and the lower inner side of the shell, the vertical distance between the extending part of the air guide plate and the windward side of the evaporator is not less than 40mm, and the height of the extending part of the air guide plate is lower than the high end of the evaporator along the vertical direction;
or the air guide mechanism is in the form of an air guide grid, the two or more air guide channels are arranged in parallel, and the range of the included angle omega between the air guide channels and the horizontal direction is 130-170 degrees.
6. The drying system of claim 3 or 5, wherein: the air guide mechanism is an air guide plate which is obliquely arranged relative to the vertical direction, and the included angle theta between the air guide plate and the vertical direction is 20-50 degrees.
7. The drying system of any one of claims 1 to 5, wherein the evaporator is a microchannel heat exchanger, wherein the evaporator is a multilayer heat exchanger with more than two layers, the evaporator comprises two collecting pipes and flat pipes with two ends respectively communicated with the collecting pipes, each flat pipe comprises a main body part, fins are arranged between the adjacent main body parts of the evaporator, the collecting pipes of the evaporator are arranged approximately horizontally, the main body parts of the flat pipes of the evaporator are inclined, and the range of an angle α formed by the main body parts and the horizontal direction is more than or equal to 23 degrees and less than or equal to α degrees and less than or equal to 65 degrees.
8. The drying system of claim 7, wherein: the flat tube of the evaporator is provided with a bending reversing part, the main body part of the flat tube is positioned between the bending reversing part and the collecting pipe or between the bending reversing parts, the main body parts of the flat tube of the evaporator are arranged in equal length, or the length of the main body part of one flat tube is greater than that of the main body part of the other flat tube.
9. A clothes drying device comprises a roller and a drying system, and is characterized in that the drying system is the drying system according to any one of claims 1 to 8, the roller is provided with a front side and a rear side which are oppositely arranged, the front side of the roller forms an air inlet, the rear side of the roller forms an air outlet, a shell of the drying system is close to the upper side of the roller, the shell is connected with the air outlet of the roller through an air inducing part, and the shell is connected with the air inlet of the roller through an air supplying part.
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| US20200318280A1 (en) * | 2017-11-28 | 2020-10-08 | Electrolux Laundry Systems Sweden Ab | Tumble dryer with a heat pump system |
| KR20200098115A (en) | 2019-02-12 | 2020-08-20 | 삼성전자주식회사 | Dryer |
| CN111021013B (en) * | 2019-11-27 | 2023-01-31 | 无锡小天鹅电器有限公司 | Base and clothes treatment device |
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|---|---|---|---|---|
| CN2720371Y (en) * | 2004-03-19 | 2005-08-24 | 楼锦培 | Food low-temp. drying device |
| CN104695192A (en) * | 2013-12-06 | 2015-06-10 | 杭州三花研究院有限公司 | Clothes washing and drying machine with heat pump, heat pump, and application of heat pump in clothes washing and drying machine with heat pump |
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| CN201288259Y (en) * | 2008-10-17 | 2009-08-12 | 上海航星机械(集团)有限公司 | Recovery system of dry cleaning machine |
| CN102206916B (en) * | 2011-06-23 | 2016-08-31 | 青岛海尔洗衣机有限公司 | A kind of heat pump drying system for cylinder drying and control method |
| CN102410709B (en) * | 2011-11-30 | 2014-02-12 | 华南理工大学 | Heat pump drying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720371Y (en) * | 2004-03-19 | 2005-08-24 | 楼锦培 | Food low-temp. drying device |
| CN104695192A (en) * | 2013-12-06 | 2015-06-10 | 杭州三花研究院有限公司 | Clothes washing and drying machine with heat pump, heat pump, and application of heat pump in clothes washing and drying machine with heat pump |
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