CN107815812B - High-efficiency condenser and washing machine with same - Google Patents
High-efficiency condenser and washing machine with same Download PDFInfo
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- CN107815812B CN107815812B CN201610822018.9A CN201610822018A CN107815812B CN 107815812 B CN107815812 B CN 107815812B CN 201610822018 A CN201610822018 A CN 201610822018A CN 107815812 B CN107815812 B CN 107815812B
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- condenser
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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
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
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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
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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
- D06F58/24—Condensing arrangements
Abstract
The invention discloses a high-efficiency condenser and a washing machine with the condenser, wherein the condenser is a cavity structure which is wide at the top and narrow at the bottom and is bent at the bottom towards one side, and the condenser comprises: the lower part of the shell is provided with an air inlet connected with the outer barrel of the washing machine, the top of the shell is provided with an air outlet connected with a fan in the drying air duct, the surface of the lower bent part with the smaller curvature radius is the inner side, and the surface of the lower bent part with the larger curvature radius is the outer side; the heat exchange tubes are arranged in the shell and exchange heat with the damp and hot air, and are hollow and wound into a plurality of rows of cylindrical spring-shaped heat exchange tubes which are arranged in a plurality of rows up and down; the spraying box is arranged above the heat exchange tube and used for washing thread scraps on the heat exchange tube; and the condensation water outlet is positioned at the bottom of the condenser and is used for discharging condensed water in the condenser to be connected with a drain pipe of the washing machine. The invention realizes the gas-liquid separation in the condensation process, and the density, the outer diameter and the inner diameter of the heat exchange pipe are changed to ensure that the heat exchange is more sufficient, the condensation efficiency is improved, and the drying efficiency of the washing and drying machine is improved.
Description
Technical Field
The invention belongs to the field of washing and drying machines, and particularly relates to a high-efficiency condenser and a washing machine with the same.
Background
Most of the clothes washing and drying machines on the market are cleaning appliances for automatically drying clothes by utilizing electric heat, and are important household appliances for areas with high air humidity and difficult clothes drying. The washing and drying machine is divided into a drum type and a cabinet type according to the structural form, and the drum type is more. The drum-type clothes dryer generally comprises a box body, a drum system, a hot air system and a transmission and control system; the method is divided into an exhaust type and a dehumidification type according to the moisture discharge mode, wherein the exhaust type directly discharges high-temperature and high-humidity air formed by evaporating moisture in the machine to the outside of the machine, and the dehumidification type directly discharges the high-temperature and high-humidity air to the outside of the machine after the high-temperature and high-humidity air passes through a heat exchanger to generate condensed water.
The condensing drying system of drum washing machine is characterized by that in the circulating air channel a condenser is set, the water content in the wet clothes can be heated by hot drying air and changed into steam, and when the steam is passed through the condenser, the steam can be cooled into steam, and discharged to the exterior of washing machine, and the condensed drying air can be passed through fan and heater to become hot drying air, and can be blown over the clothes again until the water content in the clothes is completely changed into steam, then said steam can be condensed into water, and discharged so as to attain the goal of drying. In this process, the temperature and humidity of the hot air are decisive. The temperature of the hot air depends on the power of the heater, which is determined by the heat resistance of the fibers; the humidity of the hot air is the water vapor content, and the capacity of changing the water vapor into distilled water depends on the condensing capacity of the condenser, so that the drying efficiency is improved by improving the condensing capacity of the condenser. In the prior art, fan cooling or water spray cooling is generally adopted for the shell of the condenser and the outer surface of the hot air pipeline, and water is dispersed for cooling in the condenser or the air duct.
Chinese patent CN200610000722.2 discloses a "condensation structure for use in a drying system of a high-efficiency drying washing machine", which comprises a condensation air duct and a condensed water inlet pipe, wherein at least one condensation device is fixedly arranged in the condensation air duct, and one end of the condensation device is provided with a condensed water spraying device which is connected with the condensed water inlet pipe and cools the condensation device. And a condensate water spraying device which is connected with the condensate water inlet pipe and is convenient for the condensate water to pass through along the condensation plate is arranged above the condensation device.
The invention does not realize the problem of gas-liquid mixing in the condensation process, simultaneously does not fully utilize the space in the condenser, can not control the heat exchange area, is not fully utilized, and simultaneously can bring part of condensate into the air circulation system again to reduce the clothes drying efficiency.
Chinese patent CN 201410488762.0 discloses a "self-cleaning filtering device for clothes dryer" comprising a condenser, a filter screen, an air duct, a water storage box, a water storage tank, a water discharge pump, an upper water discharge pipe arranged between the water storage box and the water discharge pump, a water level sensor arranged in the water storage tank, a sprayer arranged in the air duct and positioned between the filter screen and the condenser, and a T-shaped water discharge pipe for connecting the water storage box and the sprayer; the first sensor is positioned in the air duct and used for sensing the accumulated amount of the thread scraps on the filter screen; and the controller receives signals transmitted by the first sensor and the water level sensor and respectively sends out instructions to control the opening and closing of the drainage pump and the sprayer.
The position of the sprayer is positioned between the filter screen and the condenser, and the sensor is arranged, so that the complexity of the equipment is increased, and when the sensor fails, the spraying mechanism cannot normally operate.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-efficiency condenser and a washing machine with the condenser, which successfully realize gas-liquid separation in the condensation process, fully exchange heat between heat exchange media, improve the condensation efficiency, and simultaneously provide a spraying device for the condenser to flush and accumulate thread scraps so as to shorten the drying time of the washing and drying machine.
In order to realize the purpose, the invention adopts the following technical scheme:
a high-efficiency condenser applied to a washing and drying machine is a cavity structure which is wide at the top and narrow at the bottom and is bent at the lower part to one side, and comprises:
the lower part of the shell is provided with an air inlet connected with the outer barrel of the washing machine, the top of the shell is provided with an air outlet connected with a fan in the drying air duct, the surface of the lower bent part with the smaller curvature radius is the inner side, and the surface of the lower bent part with the larger curvature radius is the outer side;
the heat exchange tubes are arranged in the shell, exchange heat with the damp and hot air, are hollow and are wound into a plurality of rows of cylindrical spring-shaped heat exchange tubes which are arranged in a plurality of rows up and down;
the spraying box is arranged above the heat exchange tube and used for washing thread scraps on the heat exchange tube;
and the condensation water outlet is positioned at the bottom of the condenser and is used for discharging condensed water in the condenser to be connected with a drain pipe of the washing machine.
Furthermore, the outer diameter of the heat exchange tube is unchanged, the thickness of the heat exchange tube is unchanged, and the pitches of the cylindrical spring-shaped heat exchange tubes in the same row are gradually increased from the outer side to the inner side.
Furthermore, the pitch of the cylindrical spring-shaped heat exchange tubes in the same row is unchanged, the thickness of the heat exchange tubes is unchanged, and the outer diameter of each heat exchange tube is gradually reduced from the outer side to the inner side.
Furthermore, the pitch of the cylindrical spring-shaped heat exchange tube is unchanged, the outer diameter of the heat exchange tube is unchanged, and the inner diameter of the heat exchange tube is gradually reduced from bottom to top.
Furthermore, the gap between two adjacent circles of the cylindrical spring-shaped heat exchange tube is fixed, the thickness of the heat exchange tube is unchanged, and the outer diameter of each row of heat exchange tubes is gradually reduced from bottom to top.
Furthermore, the outer diameter of the heat exchange tube is 2-15 mm.
Furthermore, the liquid inlet of the heat exchange tube is positioned at the upper end of the condenser and is connected with the low-temperature liquid pipeline, and the liquid outlet is positioned at the lower end of the condenser and is connected with the high-temperature liquid pipeline.
Furthermore, the upper part of the heat exchange tube is provided with a spraying box which is of a hollow cavity structure, the top of the spraying box is provided with a water inlet, and the bottom of the spraying box is an arc-shaped downwards-convex arc-shaped bottom surface in the length direction of the spraying box.
Further, the water inlet is connected with a water inlet pipeline of the washing machine.
Furthermore, the length of the spraying box is smaller than the length of the top of the shell in the same direction, the spraying box is close to the inner wall of the outer side of the shell, and a plurality of spraying water outlets are formed in the bottom surface of the spraying box.
A washing machine with a condenser has a high efficiency condenser with any of the above features.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The efficient condenser and the washing machine with the condenser successfully realize gas-liquid separation in the condensation process, overcome the defects of the existing condenser which directly condenses by spraying cold water, and ensure that the heat exchange area in the heat exchange process is fixed and controllable. The cylindrical spring-shaped heat exchange tube increases the contact area between the heat exchange device and the hot and humid air; through combining the air flow direction in the inside cavity of condenser, synthesize multiple modes such as adjustment cylindrical spring shape heat exchange tube's density degree and external diameter and internal diameter size, reach abundant rational utilization heat exchanger whole area, increased substantially the heat exchange efficiency between damp and hot air and the heat exchange tube. Meanwhile, the upper part of the heat exchange tube is also provided with the spraying box, and the spraying box washes the thread scraps adhered on the heat exchange tube by using water flow, so that the reduction of heat exchange efficiency and the bacterial growth caused by the accumulation of the thread scraps are avoided, the heat exchange efficiency is improved, the integral drying time of the clothes washing and drying machine is shortened, and the sanitary environment of the clothes washing and drying machine is improved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view, partially in section, of a washer dryer using the present invention;
FIG. 2 is a schematic external view of a washer dryer using the present invention;
FIG. 3 is a schematic cross-sectional view of a condenser assembly of the present invention;
FIG. 4 is a schematic view of a condenser assembly of the present invention;
FIG. 5 is a schematic view of the heat exchange tubes of the condenser of the present invention;
FIG. 6 is a schematic exterior view of a spray box of the condenser of the present invention;
fig. 7 is a cross-sectional schematic view of the spray box of the condenser of the present invention.
In the figure: 1. a condenser; 2. a condensation water outlet; 3. a liquid discharge port; 4. a heat exchange pipe; 5. a housing; 6. a liquid inlet; 7. a spray box; 8. an air inlet; 9. an air outlet; 10. a water inlet of the spray box; 11. a spray water outlet; 12. a door body; 13. an outer cylinder; 14. a motor; 15. a fan; 16. a heater; 17. a drying air duct; 18. the inner side; 19. the outer side.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, the present invention discloses a high efficiency condenser and a washing machine having the same. The condenser 1 is a cavity structure which is wide at the top and narrow at the bottom and the lower part of which is bent to one side, and comprises: the lower part of the shell 5 is provided with an air inlet 8 connected with an outer cylinder 13 of the washing machine, the top part of the shell is provided with an air outlet 9 connected with a fan 15 in a drying air duct 17, the plane of the lower bending part with the small curvature radius is the inner side 18, and the plane of the lower bending part with the large curvature radius is the outer side 19; the heat exchange tubes 4 are arranged in the shell 5, exchange heat with the damp and hot air, are hollow and are wound into a plurality of rows of cylindrical spring-shaped heat exchange tubes which are arranged in a plurality of rows up and down; the spraying box 7 is arranged above the heat exchange tube 4 and used for washing thread scraps on the heat exchange tube 4; and a condensation water outlet 2 which is positioned at the bottom of the condenser 1 and is used for discharging condensed water in the condenser 1 and is connected with a drain pipe of the washing machine. The invention realizes the gas-liquid separation in the condensation process, and the density, the outer diameter and the inner diameter of the heat exchange pipe are changed to ensure that the heat exchange is more sufficient, the condensation efficiency is improved, and the drying efficiency of the washing and drying machine is improved.
Example 1
As shown in fig. 1 to 5, the high efficiency condenser 1 of the present embodiment is applied to a washing and drying machine, and the condenser 1 is a cavity structure which is wide at the top and narrow at the bottom and is bent at the bottom to one side, and includes:
the lower part of the shell 5 is provided with an air inlet 8 connected with an outer cylinder 13 of the washing machine, the top part of the shell is provided with an air outlet 9 connected with a fan 15 in a drying air duct 17, the plane of the lower bending part with the small curvature radius is the inner side 18, and the plane of the lower bending part with the large curvature radius is the outer side 19;
the heat exchange tube 4 is arranged in the shell 5 to exchange heat with damp and hot air, is hollow and is wound into a plurality of rows of cylindrical spring-shaped heat exchange tubes which are arranged in a plurality of rows up and down, a liquid inlet 6 of the heat exchange tube 4 is positioned at the upper end of the condenser 1 and is connected with a low-temperature liquid pipeline, a liquid outlet 3 is positioned at the lower end of the condenser 1 and is connected with a high-temperature liquid pipeline, and the low-temperature pipeline and the high-temperature pipeline are only compared with the liquid temperature before and after heat exchange and do not represent the meaning of absolute temperature;
the spraying box 7 is arranged above the heat exchange tube 4 and used for washing thread scraps on the heat exchange tube 4;
and a condensation water outlet 2 which is positioned at the bottom of the condenser 1 and is used for discharging condensed water in the condenser 1 and is connected with a drain pipe of the washing machine.
As shown in fig. 2, the laundry washing and drying machine using the condenser of the present invention in this embodiment includes an outer tub 13, a motor 14, a drying air duct 17, a blower 15, a condenser 1 assembly, and the like, wherein the blower 15 is disposed at the front end of the drying air duct 17, and the condenser 1 assembly is disposed at the front end of the blower 15. As shown in fig. 1, a heater 16 is provided inside the drying duct 17 of the washing and drying machine. When clothes are dried, firstly, the heater 16 is used for heating air, the hot air is driven by the fan 15 to enter the washing drum and heat moisture remained on the clothes into water vapor, the water vapor enters the condenser 1 under the driving of the fan 15 along with the hot air, the water vapor is condensed into liquid water in the condenser 1 and is discharged through the condensation water outlet 2 at the bottom of the condenser 1, and relatively dry air is heated by the heater 16 again and enters the washing drum to participate in the clothes drying cycle. After a certain time of circulation, the clothes are dried.
The condenser assembly of the present embodiment is shown in fig. 4, and comprises a condenser 1, a heat exchange pipe 4, a shower box 7 and the like. The upper part of the condenser 1 is provided with an air outlet 9, the air outlet 9 is connected with an inlet of a fan 15, the lower part of the condenser 1 is provided with an air inlet 8, and the air inlet 8 is connected with an air outlet of an outer barrel 13. The bottom of the condenser 1 is provided with a condensation water outlet 2 for discharging liquid water formed by the condensation of water vapor. The spraying box 7 is arranged at the upper part of the condenser 1. As shown in fig. 3, the heat exchange tube 4 is in the form of a plurality of cylindrical springs arranged up and down, and is disposed in a cavity inside the condenser 1, cooling water flows into the heat exchange tube 4 through the liquid inlet 6 and flows through the liquid outlet 3 along an internal passage to be discharged, the cooling water fully exchanges heat with the moist air flow flowing in through the air inlet 8 of the condenser 1 when flowing through the heat exchange tube 4, water vapor carried by the moist air flow is condensed into liquid water, and the liquid water flows out of the condenser 1 through the condensation water outlet 2 and then is discharged out of the machine. In the whole condensation heat exchange process, the low-temperature liquid in the heat exchange tubes 4 of the condenser 1 flows downwards from the upper part, and the damp and hot air flows upwards from the lower part, so that the heat exchange efficiency can be improved.
Further, as shown in the schematic diagram of the heat exchange tube shown in fig. 5, the liquid inlet 6 and the liquid outlet 3 are respectively disposed at the upper end and the lower end thereof. The liquid inlet 6 is connected with a water inlet pipe of the washing and drying machine, the liquid outlet 3 is connected with a drain pipe of the washing and drying machine, and in some washing and drying machines with evaporator heat circulation, in order to achieve the condensation effect, the liquid inlet 6 can also be connected with other heat exchange liquid media, so that the purpose of filling flowing low-temperature liquid in the heat exchange pipe 4 is achieved.
The heat exchange tubes 4 are in the form of cylindrical springs arranged in multiple rows, so that the heat exchange tubes have a large surface area, and cooling water flowing through the heat exchange tubes can fully exchange heat with damp and hot airflow, so that the heat exchange tubes have good condensation efficiency. In order to ensure the heat exchange efficiency of the heat exchange tube, the heat exchange tube 4 is made of copper, copper alloy, aluminum alloy or other materials with good heat conductivity. The outer diameter of the heat exchange tube is 2-15mm, and the preferred outer diameter of the heat exchange tube is 4-8 mm.
Meanwhile, the spraying box 7 is arranged at the upper part of the condenser 1 assembly, and the water flow flowing in from the water inlet pipe can be used for washing thread scraps possibly adhered to the heat exchange pipe. The heat exchange tubes 4 are in the form of cylindrical springs arranged in multiple rows and have large surface areas, so that cold water can fully exchange heat with hot and humid air flow when flowing through the heat exchange tubes 4, and the condensation efficiency is high. The clothes washing and drying machine using the condensing method can obviously improve condensing efficiency, greatly shorten clothes drying time and simultaneously has good energy-saving effect.
In the present embodiment, a mode that the outer diameter is unchanged, the thickness of the heat exchange tube 4 is unchanged, and the pitches of the cylindrical spring-shaped heat exchange tubes in the same row are gradually increased from the outer side 19 to the inner side 18 is particularly adopted for the distribution of the heat exchange tubes 4. The distribution of the heat exchange tubes 4 is such that the density of the heat exchange tubes 4 near the outer side 19 is greater than the density of the heat exchange tubes 4 at the inner side 18, and the variation is a smooth transition.
This is adopted to facilitate the uniform flow of the hot and humid air in the condenser 1 more, and to increase the contact time and area of the hot and humid air with the heat exchange tubes 4. The condenser 1 is provided in the present invention as a cavity structure which is wide at the upper side and narrow at the lower side, and the lower part is bent to one side. In such a chamber structure, the flow of the hot and humid air is not uniform, i.e. the flow rate of the hot and humid air is much faster on the outer side 19 than on the inner side 18. This has the result that, on the one hand, the heat exchange tubes 4 on the outer side 19 of the condenser need to exchange more heat under the same conditions, so that the heat exchange efficiency of the heat exchange tubes 4 on the outer side is reduced due to the temperature rise; on the other hand, since the hot and humid air flows mostly from the outer side 19, the heat exchange of the heat exchange tube at the inner side 18 is incomplete, the surface area of the heat exchange tube 4 is not fully utilized, and the condensing capacity of the condenser 1 is not used to the maximum extent.
Therefore, in the embodiment, that is, in the manner that the density of the heat exchange tubes 4 near the outer side 19 of the heat exchange tubes 4 is greater than that of the heat exchange tubes 4 at the inner side 18, on one hand, the number of heat exchange media in a unit area of the heat exchange tubes 4 at the outer side 19 is increased, so that the heat exchange rate is improved, and on the other hand, the pitch of the cylindrical spring-shaped heat exchange tubes at the outer side 19 is reduced, so that the damp and hot air has larger wind resistance when flowing at the outer side 19 side in the condenser 1, the air can uniformly flow in the cavity of the condenser 1 as much as possible, and the purpose of better utilizing the heat exchange media at the inner side 18 is achieved. Finally, the condensing effect of the condenser is improved, and the clothes drying efficiency of the dry washing machine is improved.
Example 2
The present embodiment is different from embodiment 1 in that the pitch of the cylindrical spring-shaped heat exchange tubes 4 in the same row is constant, the thickness of the heat exchange tubes is constant, and the outer diameter of the heat exchange tubes is gradually reduced from the outer side 19 to the inner side 18.
Although the pitch of the cylindrical spring-shaped heat exchange tubes is unchanged by adopting the distribution mode of the heat exchange tubes 4, the outer diameter of the heat exchange tubes 4 is gradually reduced from the outer side 19 to the inner side 18, so that the gap between two adjacent circles of the cylindrical spring-shaped heat exchange tubes 4 near the outer side 19 is smaller than the gap between two adjacent circles of the heat exchange tubes 4 near the inner side 18, the density of the heat exchange tubes 4 near the outer side 19 is larger than that of the heat exchange tubes at the inner side 18, meanwhile, the surface area of the heat exchange tubes 4 at the outer side 19 is also larger than that of the heat exchange tubes 4 at the inner side 18, and the heat exchange area of the part is further increased, and the heat exchange efficiency is improved. Meanwhile, the thickness of the heat exchange tube is kept unchanged, so that the process that the outer diameter of the heat exchange tube is gradually reduced is also the process that the inner diameter of the heat exchange tube is gradually reduced. This allows the heat exchange area between the low-temperature liquid flowing in the heat exchange tube near the outer side 19 and the heat exchange tube to be larger than the heat exchange area between the low-temperature liquid flowing in the heat exchange tube near the inner side 18 and the heat exchange tube. The heat exchange efficiency of the heat exchange tubes 4 at the outer side 19 through which the hot and humid air mainly passes is further improved.
Thus, on the basis of the principle of the embodiment 1, the purposes of further improving the condensation effect of the condenser and improving the clothes drying efficiency of the clothes washing and drying machine are achieved by further increasing the surface area of the heat exchange tube near the outer side 19 and the heat exchange area of the low-temperature liquid and the heat exchange tube inside.
Example 3
The present embodiment is different from the above-described embodiments in that the pitch of the cylindrical spring-shaped heat exchange tube 4 is constant, the outer diameter of the heat exchange tube 4 is constant, and the inner diameter of the heat exchange tube 4 is gradually reduced from the lower side to the upper side.
As shown in fig. 1 to 5, when drying clothes, the heater 16 heats air, the hot air is driven by the fan 15 to enter the washing tub and heats moisture remaining on the clothes into steam, and the steam enters the condenser 1 along with the hot air from the air inlet 8 connected to the air outlet of the outer tub 13 at the lower part of the condenser 1 under the driving of the fan 15. Meanwhile, cooling water flows into the interior of the heat exchange tube 4 through the liquid inlet 6 at the upper part of the condenser 1 and is discharged from the liquid outlet 3 at the lower part of the condenser 1 along the internal path, and the cooling water fully exchanges heat with the damp and hot airflow flowing in through the air inlet 8 of the condenser 1 when flowing through the heat exchange tube 4. In the whole condensation heat exchange process, the low-temperature liquid in the heat exchange tubes 4 of the condenser 1 flows downwards from the upper part, and the damp and hot air flows upwards from the lower part. Such treatment is intended to perform the heat exchange process more efficiently, but at the same time it leaves room for improvement.
During the exchange process, the heat exchange liquid in the heat exchange tube 4 continuously exchanges heat with the damp and hot air in the process of flowing downwards, and a large amount of heat is absorbed; meanwhile, the lower heat exchange tube 4 is closer to the air inlet 8 of the damp and hot air, and both of the two factors cause the condition that the temperature of the heat exchange tube 4 at the lower part of the condenser 1 is higher than that of the heat exchange tube 4 at the upper part. This results in a substantial reduction in the condensing effect at the bottom of the condenser, which in turn reduces the condensing effect of the condenser as a whole. And because the bottom condensation effect is not enough, a part of condensed water condensed from the upper part can not be discharged from the condensation water outlet 2, and the agitated damp and hot air is blown back to the washing machine again, thereby reducing the clothes drying efficiency of the washing and drying machine.
The design of the heat exchange tube of the embodiment is adopted, so that the pitch of the cylindrical spring-shaped heat exchange tube of the heat exchange tube 4 is unchanged, the outer diameter of the heat exchange tube 4 is unchanged, and the inner diameter of the heat exchange tube 4 is gradually reduced from the lower part to the upper part. The problem that the condensing efficiency is low at the bottom of the condenser 1 is solved, and the different distribution of the inner diameter of the heat exchange tube 4 is changed, so that under the same appearance size, the heat exchange area of the heat exchange medium and the heat exchange tube in the heat exchange tube 4 at the bottom of the condenser 1 is larger than that of the heat exchange medium and the heat exchange tube in the heat exchange tube 4 at the upper part, the condensing effect of the condenser of the washing and drying machine is improved, and the clothes drying efficiency of the washing and drying machine is improved.
Example 4
The present embodiment is different from the above embodiments in that the gap between two adjacent circles of the cylindrical spring-shaped heat exchange tube 4 in the present embodiment is fixed, the thickness of the heat exchange tube is not changed, and the outer diameter of each row of heat exchange tubes 4 is gradually reduced from bottom to top.
The design of the heat exchange tubes of the embodiment is equivalent to that the outer diameter and the inner diameter of each row of heat exchange tubes are synchronously and gradually reduced from downward to upward, so that the inner diameter of the bottom heat exchange tube 4 is increased, the heat exchange area between a bottom heat exchange medium and the inner wall of the heat exchange tube is increased, and the heat exchange area of the outer surface of the heat exchange tube of the bottom heat exchange tube 4 is also increased. Thereby achieving the purpose of enhancing the heat exchange efficiency of the bottom heat exchange tube 4 and avoiding the defect of the reduction of the condensation efficiency caused by insufficient heat exchange capacity of the bottom to a greater extent. Finally, the purposes of improving the condensing effect of the condenser of the washing and drying machine and improving the clothes drying efficiency of the washing and drying machine are achieved. In this embodiment and embodiment 3, it is necessary to keep the gap between two adjacent circles of the cylindrical spring-shaped heat exchange tube of the heat exchange tube 4 fixed instead of adopting a mode of constant pitch, mainly to ensure that the damp and hot air blown in from the bottom can smoothly flow in the condenser, and to avoid the problem that the bottom air intake resistance is too large due to the reduction of the gap between the heat exchange tubes 4 in order to pursue the bottom condensation efficiency, and the heat exchange efficiency is adversely affected.
Of course, the method for changing the distribution of the heat exchange area between the condensing medium in the heat exchange tube 4 and the inner wall of the heat exchange tube by changing the inner diameter distribution of the heat exchange tube 4 can also be applied to more application situations at the same time, and is not described herein again.
Example 5
As shown in fig. 3, 4, 6 and 7, in this embodiment, the upper portion of the heat exchange tube 4 has a spray box 7, the spray box 7 has a hollow cavity structure, the top portion has a spray box water inlet 10, the water inlet 10 is connected to a water inlet pipeline of the washing machine, the bottom portion of the spray box 7 is an arc bottom surface protruding downwards and forming an arc shape in the length direction of the spray box, and the bottom surface is provided with a plurality of spray water outlets 11. The length of the shower box 7 is smaller than the length in the same direction at the top of the housing 5 and abuts against the inner wall of the outer side of the housing 5.
The washing and drying machine can drop thread scraps from clothes in the washing and drying processes, the dropped thread scraps can reach a heat exchange pipe in a condenser along with circulating air flow, and part of the thread scraps are adhered to the heat exchange pipe. In order to solve the problem of accumulation of the thread scraps, the spraying box 7 is arranged at the upper part of the heat exchange tube 4 and used for washing the thread scraps adhered on the heat exchange tube 4. The upper end of the spraying box 7 is provided with a spraying box water inlet 10 for connecting a water inlet pipeline, and the lower end is provided with a plurality of spraying water outlets 11 for spraying flushing water flow to the heat exchange tube.
In order to achieve an ideal flushing effect, the bottom of the spraying box 7 is set into a downward convex arc shape which is arc-shaped in the length direction of the spraying box, flushing water flow sprayed out of the spraying water outlet 11 is in a fan shape and sprays on the heat exchange tube 4, and the size of the spraying box can be designed to be smaller by the arrangement mode without affecting the flushing effect. The aperture of the spray water outlet 11 is 1-10mm, preferably 2-5 mm. Of course, the shape of the spray water outlet can be square, rectangular or other shapes.
In the installation position of the spraying box 7, the length of the spraying box 7 is less than the length of the top of the shell 5 in the same direction, namely, the length of the spraying box 7 is slightly less than the width of the shell 5 of the condenser in order to accommodate the lower spraying box 7 and ensure that a gap is arranged on one part of the top of the condenser 1; at the same time, the shower box 7 also abuts against the inner wall of the outer side 19 of the housing 5. The purpose of this is based on the flow distribution of the hot and humid air in the condenser as mentioned in the previous embodiments. Since the moist hot air contacts the heat exchange tubes 4 more on the side of the condenser 1 close to the outer side 19, the amount of thread waste on this side is also significantly greater than on the side close to the inner side 18, and therefore, in the case of a limited installation space, it is preferable to place the installation position of the shower box 7 as close as possible to the inner wall of the outer side 19 to improve the shower effect. Of course, the distribution density of the spray water outlets 11 can be adjusted to achieve a more optimal effect through an actual spraying effect.
This embodiment utilizes rivers to wash the line bits of probably adhesion on the heat exchange tube, has not only avoided piling up the heat exchange efficiency who causes because of the line bits and has descended, has still reduced bacterial growing simultaneously, lets the internal environment of washing and drying the clothing machine healthier.
Example 6
This embodiment discloses a washing machine having the high efficiency condenser described in any one of embodiments 1 to 5 above. The washing machine of this embodiment utilizes high-efficient condenser, has successfully realized the gas-liquid separation of condensation process, has overcome the current drawback of directly carrying out the condenser of condensation with spraying cold water for heat exchange area among the heat exchange process is fixed and controllable. The washing machine of the embodiment uses the cylindrical spring-shaped heat exchange tube to increase the contact area between the heat exchange device and the hot and humid air; through combining the air flow direction in the inside cavity of condenser, synthesize multiple modes such as adjustment cylindrical spring shape heat exchange tube's density degree and external diameter and internal diameter size, reach abundant rational utilization heat exchanger whole area, increased substantially the heat exchange efficiency between damp and hot air and the heat exchange tube. Simultaneously can also be provided with on the upper portion of the washing machine's of this embodiment heat exchange tube and spray the box, spray the box and utilize rivers to wash the line bits of adhesion on the heat exchange tube, avoid piling up the heat exchange efficiency that causes by the line bits and descend and bacterial growing, not only improve heat exchange efficiency, shortened the whole stoving time of washing and drying machine but also made the sanitary environment of washing and drying machine obtain improving.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a high-efficient condenser, is applied to the washing and drying machine which characterized in that: the condenser is a cavity structure which is wide at the top and narrow at the bottom and the lower part of which is bent to one side, and comprises:
the lower part of the shell is provided with an air inlet connected with the outer barrel of the washing machine, the top of the shell is provided with an air outlet connected with a fan in the drying air duct, the surface of the lower bent part with the smaller curvature radius is the inner side, and the surface of the lower bent part with the larger curvature radius is the outer side;
the heat exchange tubes are arranged in the shell, exchange heat with the damp and hot air, are hollow and are wound into a plurality of rows of cylindrical spring-shaped heat exchange tubes which are arranged in a plurality of rows up and down;
the spraying box is arranged above the heat exchange tube and used for washing thread scraps on the heat exchange tube;
the condensation water outlet is positioned at the bottom of the condenser and used for discharging condensed water in the condenser to be connected with a drain pipe of the washing machine;
the outer diameter of the heat exchange tube is unchanged, the thickness of the heat exchange tube is unchanged, and the pitches of the cylindrical spring-shaped heat exchange tubes in the same row are gradually increased from the outer side to the inner side;
or the pitches of the cylindrical spring-shaped heat exchange tubes in the same row are unchanged, the thicknesses of the heat exchange tubes are unchanged, and the outer diameters of the heat exchange tubes are gradually reduced from the outer side to the inner side;
or the pitch of the cylindrical spring-shaped heat exchange tube is unchanged, the outer diameter of the heat exchange tube is unchanged, and the inner diameter of the heat exchange tube is gradually reduced from bottom to top;
or the gap between two adjacent circles of the cylindrical spring-shaped heat exchange tube is fixed, the thickness of the heat exchange tube is unchanged, and the outer diameter of each row of heat exchange tubes is gradually reduced from bottom to top.
2. The condenser of claim 1, wherein: the outer diameter of the heat exchange tube is 2-15 mm.
3. The condenser of claim 1, wherein: the liquid inlet of the heat exchange tube is positioned at the upper end of the condenser and is connected with the low-temperature liquid pipeline, and the liquid outlet is positioned at the lower end of the condenser and is connected with the high-temperature liquid pipeline.
4. The condenser of claim 1, wherein: the upper part of the heat exchange tube is provided with a spraying box which is of a hollow cavity structure, the top of the spraying box is provided with a water inlet, and the bottom of the spraying box is an arc-shaped downwards-convex arc-shaped bottom surface in the length direction of the spraying box.
5. The condenser of claim 4, wherein: the length of the spraying box is smaller than the length of the top of the shell in the same direction, the spraying box is close to the inner wall of the outer side of the shell, and a plurality of spraying water outlets are formed in the bottom surface of the spraying box.
6. A washing machine having a condenser, characterized in that: a high efficiency condenser using the features of any of claims 1 to 5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4074876A1 (en) * | 2021-04-16 | 2022-10-19 | Whirlpool Corporation | Condensing system for combination washer/dryer appliance |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197235B (en) * | 2018-11-16 | 2023-06-30 | 青岛海尔洗衣机有限公司 | Cleaning method of condenser and washing and drying integrated machine |
| AU2021299595A1 (en) * | 2020-07-03 | 2023-02-02 | Lg Electronics Inc. | Laundry treatment machine |
| CN115704173A (en) * | 2021-08-03 | 2023-02-17 | 无锡小天鹅电器有限公司 | Condenser and clothes treatment equipment with same |
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| CN107815812A (en) | 2018-03-20 |
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