CN107815835B - High-efficiency condenser and washing machine with same - Google Patents
High-efficiency condenser and washing machine with same Download PDFInfo
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- CN107815835B CN107815835B CN201610820451.9A CN201610820451A CN107815835B CN 107815835 B CN107815835 B CN 107815835B CN 201610820451 A CN201610820451 A CN 201610820451A CN 107815835 B CN107815835 B CN 107815835B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/45—Cleaning or disinfection of machine parts, e.g. of heat exchangers or filters
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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
- D06F58/22—Lint collecting 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
- D06F58/20—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 cylinder of the washing machine, and the top of the shell is provided with an air outlet connected with a fan in the drying air duct; the heat exchange tubes are arranged in the shell and exchange heat with the damp and hot air, are hollow and are bent into a multi-layer structure, the heat exchange tubes in each layer are bent into snake-shaped spring-shaped heat exchange tubes, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes; 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 and exchange heat with the damp and hot air, are hollow and are bent into a multi-layer structure, the heat exchange tubes in each layer are bent into snake-shaped spring-shaped heat exchange tubes, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes;
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, the interlayer gap is unchanged, and the pitches of the serpentine spring-shaped heat exchange tubes in the same layer are gradually increased from the outer side to the inner side.
Furthermore, the thickness of the heat exchange tube is unchanged, the interlayer spacing of the center line of the heat exchange tube is unchanged, the pitch of the snake-shaped spring-shaped heat exchange tube in the same layer is unchanged, and the outer diameter of the heat exchange tube is gradually reduced from the outer side to the inner side.
Furthermore, the interlayer gap of the heat exchange tubes is fixed, the pitch of the serpentine spring-shaped heat exchange tubes in the same layer is fixed, the outer diameter of the heat exchange tubes is unchanged, and the inner diameter of the heat exchange tubes is gradually reduced from the outer side to the inner side.
Furthermore, the interlayer gap of the heat exchange tubes is fixed, the pitch of the snake-shaped spring-shaped heat exchange tubes in the same layer is fixed, the outer diameter of the heat exchange tubes is unchanged, and the inner diameter of the heat exchange tubes is gradually reduced from the lower layer to the upper layer.
Furthermore, the thickness of the heat exchange tube is unchanged, the interlayer spacing of the central line of the tube is unchanged, the pitch of the snake-shaped spring-shaped heat exchange tube in the same layer is unchanged, and the outer diameter of the heat exchange tube is gradually reduced from the lower layer to the upper layer.
Further, 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 provided with a spraying surface provided with a plurality of spraying water outlets.
Further, the water inlet is connected with a water inlet pipeline of the washing machine.
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 multilayer serpentine spring-shaped heat exchange tubes 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 density degree and external diameter and the internal diameter size of adjustment snakelike spring shape heat exchange tube, 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 to exchange heat with the damp and hot air, are hollow and are bent into a multilayer structure, the heat exchange tubes in each layer are bent into snake-shaped spring-shaped heat exchange tubes 4, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes; 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 tubes 4 are arranged in the shell 5 to exchange heat with damp and hot air, are hollow and are bent into a multilayer structure, the heat exchange tubes in each layer are bent into serpentine spring-shaped heat exchange tubes 4, an interlayer gap is formed between every two adjacent layers of heat exchange tubes, liquid inlets 6 of the heat exchange tubes 4 are positioned at the upper end of the condenser 1 and connected with a low-temperature liquid pipeline, liquid outlets 3 are positioned at the lower end of the condenser 1 and connected with a high-temperature liquid pipeline, and the low-temperature pipeline and the high-temperature pipeline are only in relation to the comparison of liquid temperatures before and after heat exchange and do not represent the significance 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 tubes 4 are bent into a multi-layer structure, the heat exchange tubes in each layer are bent into serpentine spring-shaped heat exchange tubes 4, an interlayer gap is formed between every two adjacent layers of heat exchange tubes, the serpentine spring-shaped heat exchange tubes are arranged in a cavity inside the condenser 1, cooling water flows into the heat exchange tubes 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 humid hot air flowing in through the air inlet 8 of the condenser 1 when flowing through the heat exchange tubes 4, water vapor carried by the humid hot air is condensed into liquid water, and the liquid water flows out of the condenser 1 through the condensation water outlet 2 and. 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 of a multilayer structure, the heat exchange tubes in each layer are bent into the serpentine spring-shaped heat exchange tubes 4, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes, so that the heat exchange tubes have a large surface area, cooling water flowing through the heat exchange tubes can fully exchange heat with damp and hot airflow, and the condensing efficiency is good. 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 of a multilayer structure, the heat exchange tubes in each layer are bent into the serpentine spring-shaped heat exchange tubes 4, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes, so that the heat exchange tubes have a large surface area, cold water can fully exchange heat with damp and hot airflow 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 embodiment, particularly for the distribution of the heat exchange tubes 4, a mode that the outer diameter is unchanged, the thickness of the heat exchange tubes 4 is unchanged, the interlayer gap is unchanged, and the pitches of the serpentine spring-shaped heat exchange tubes 4 in the same layer are gradually increased from the outer side 19 to the inner side 18 is adopted. 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, in the manner that the gaps at the outer side 19 are reduced, the damp and hot air has larger wind resistance when flowing at the outer side 19 side in the condenser 1, so that 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. Finally, the condensing effect of the condenser is improved, and the clothes drying efficiency of the dry washing machine is improved.
Example 2
The difference between the present embodiment and embodiment 1 is that the thickness of the heat exchange tube is unchanged, the interlayer spacing of the center line of the heat exchange tube is unchanged, the pitch of the serpentine spring-shaped heat exchange tube 4 in the same layer is unchanged, and the outer diameter of the heat exchange tube is gradually reduced from the outer side 19 to the inner side 18.
Although the pitch of the serpentine spring-shaped heat exchange tubes in the same layer 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 heat exchange tubes of the serpentine spring-shaped heat exchange tubes 4 near the outer side 19 is smaller than the gap between two adjacent heat exchange tubes of the inner side 18, the density of the heat exchange tubes 4 near the outer side 19 is greater than that of the heat exchange tubes 4 near the inner side 18, and meanwhile, the surface area of the heat exchange tubes 4 near the outer side 19 is greater than that of the heat exchange tubes 4 near the inner side 18 due to the fact that the outer diameter of the heat exchange tubes 4 near the outer side 19 is greater than that of the heat exchange tubes 4 near the inner side 18, so that the heat. 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 through the heat exchange tubes near the outer side 19 and the heat exchange tubes to be simultaneously made larger than the heat exchange area between the low-temperature liquid flowing through the heat exchange tubes near the inner side 18 and the heat exchange tubes. 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 difference between the present embodiment and the above embodiments is that in the present embodiment, the interlayer gap of the heat exchange tube 4 is fixed, the pitch of the serpentine spring-shaped heat exchange tube 4 in the same layer is fixed, the outer diameter of the heat exchange tube is not changed, and the inner diameter of the heat exchange tube is gradually reduced from the outer side 19 to the inner side 18.
Such a design meets the application environment where the size of the condenser shell is required. When the specification of the shell of the condenser is limited to a certain extent, the interlayer clearance of the heat exchange tubes 4 is fixed, the pitches of the serpentine spring-shaped heat exchange tubes 4 in the same layer are fixed, the outer diameters of the heat exchange tubes are not changed, and the inner diameters of the heat exchange tubes are gradually reduced from the outer side 19 to the inner side 18, so that the heat exchange area between the low-temperature liquid flowing in the heat exchange tubes near the outer side 19 and the heat exchange tubes is larger than that between the low-temperature liquid in the heat exchange tubes near the inner side 18 and the heat exchange tubes. Thereby also increasing the condensation efficiency of the outer side 19 of the condenser.
Example 4
The difference between the present embodiment and the above embodiments is that the interlayer gap of the heat exchange tube 4 in the present embodiment is fixed, the pitch of the serpentine spring-shaped heat exchange tube 4 in the same layer is fixed, the outer diameter of the heat exchange tube is not changed, and the inner diameter of the heat exchange tube is gradually reduced from the lower layer to the upper layer.
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.
By adopting the design of the heat exchange tube, the interlayer clearance of the heat exchange tube 4 is fixed, the pitch of the snake-shaped spring-shaped heat exchange tube 4 in the same layer is fixed, the outer diameter of the heat exchange tube is unchanged, and the inner diameter of the heat exchange tube is gradually reduced from the lower layer to the upper layer. 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 5
The present embodiment is different from the above embodiments in that the thickness of the heat exchange tube 4 in the present embodiment is not changed, the interlayer spacing of the tube center line is not changed, the pitch of the serpentine spring-shaped heat exchange tube 4 in the same layer is not changed, and the outer diameter of the heat exchange tube is gradually reduced from the lower layer to the upper layer.
By adopting the design of the heat exchange tube of the embodiment, the inner diameter of the bottom heat exchange tube 4 is increased, so that the heat exchange area of the bottom heat exchange medium and the heat exchange tube is increased, and the heat exchange area 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. The requirement of the present embodiment for a constant spacing between the layers along the tube centerline is mainly for the datum requirements in the fabrication and installation of such heat exchange tubes. Of course, the interlayer spacing of the heat exchange tubes is gradually reduced from top to bottom, but the influence on the smooth flowing of the damp and hot air blown in from the bottom in the condenser is avoided, and the change of the interlayer spacing does not increase the resistance of the air flowing in the vertical direction and does not influence the heat exchange efficiency.
Of course, the method for changing the distribution of the heat exchange area between the heat exchange medium in the heat exchange tube 4 and the heat exchange tube by changing the distribution of the inner diameter 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 6
As shown in fig. 3, 4, 6 and 7, in the embodiment, the spray box 7 is arranged on the upper portion of the heat exchange tube 4, the spray box 7 is a hollow cavity structure, the top portion of the spray box is provided with a spray box water inlet 10, the water inlet 10 is connected with a water inlet pipeline of the washing machine, and the bottom portion of the spray box 7 is a spray surface provided with a plurality of spray water outlets 11. The length of the spray box 7 is the same as the length of the top of the shell 5 in the same direction.
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. The washed lint is discharged from the condensation drain port 2. The heat exchange tube in the heat exchanger has large contact area with air, and has a plurality of circuitous and spiral loops, so that spraying equipment with large flow and large coverage area is needed to achieve ideal spraying effect. In the embodiment, the length of the spraying box is set to be the same as the width of the widest part of the condenser, namely the spraying box is designed to increase the spraying effect, so that the generation of spraying dead corners is avoided to the maximum extent.
The aperture of the spray water outlet 11 is 1-10mm, preferably 2-5 mm. The shape of the spray water outlets can also be set to be square, rectangular or other shapes, and the distribution density of the spray water outlets 11 can also be adjusted to achieve a more optimal effect through an actual spray 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 7
This embodiment discloses a washing machine having the high efficiency condenser described in any one of embodiments 1 to 6 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 in the embodiment uses the multilayer serpentine spring-shaped heat exchange tubes 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 density degree and external diameter and the internal diameter size of adjustment snakelike spring shape heat exchange tube, 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 spraying box is arranged on the upper portion of the heat exchange tube used by the washing machine, the spraying box utilizes water flow to wash thread scraps adhered to the heat exchange tube, heat exchange efficiency reduction and bacterial breeding caused by accumulation of the thread scraps are avoided, heat exchange efficiency is improved, the whole drying time of the washing and drying machine is shortened, and the sanitary environment of the washing and drying machine is improved.
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 (5)
1. The utility model provides a high-efficient condenser, is applied to the washing and drying machine which characterized in that: the condenser is wide at the top and narrow at the bottom, and
cavity structure that lower part is crooked to one side includes:
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, are hollow and are bent into a multi-layer structure, the heat exchange tubes in each layer are bent into snake-shaped spring-shaped heat exchange tubes, and an interlayer gap is formed between every two adjacent layers of heat exchange tubes;
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, the interlayer gap is unchanged, and the pitches of the serpentine spring-shaped heat exchange tubes in the same layer are gradually increased from the outer side to the inner side;
or the thickness of the heat exchange tube is unchanged, the interlayer spacing of the center line of the heat exchange tube is unchanged, the pitch of the snake-shaped spring-shaped heat exchange tube in the same layer is unchanged, and the outer diameter of the heat exchange tube is gradually reduced from the outer side to the inner side;
or the interlayer gap of the heat exchange tubes is fixed, the pitch of the serpentine spring-shaped heat exchange tubes in the same layer is fixed, the outer diameter of the heat exchange tubes is unchanged, and the inner diameter of the heat exchange tubes is gradually reduced from the outer side to the inner side;
or the interlayer gap of the heat exchange tubes is fixed, the pitch of the serpentine spring-shaped heat exchange tubes in the same layer is fixed, the outer diameter of the heat exchange tubes is unchanged, and the inner diameter of the heat exchange tubes is gradually reduced from the lower layer to the upper layer;
or the thickness of the heat exchange tube is unchanged, the interlayer spacing of the central line of the tube is unchanged, the pitch of the snake-shaped spring-shaped heat exchange tube in the same layer is unchanged, and the outer diameter of the heat exchange tube is gradually reduced from the lower layer to the upper layer.
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 provided with a spraying surface provided with a plurality of spraying water outlets.
5. A washing machine having a condenser, characterized in that: a high efficiency condenser using the features of any of claims 1 to 4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820451.9A CN107815835B (en) | 2016-09-13 | 2016-09-13 | High-efficiency condenser and washing machine with same |
| PCT/CN2017/100672 WO2018050011A1 (en) | 2016-09-13 | 2017-09-06 | High-efficiency condenser and washing machine having condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820451.9A CN107815835B (en) | 2016-09-13 | 2016-09-13 | High-efficiency condenser and washing machine with same |
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| Publication Number | Publication Date |
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| CN107815835A CN107815835A (en) | 2018-03-20 |
| CN107815835B true CN107815835B (en) | 2020-04-03 |
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| CN201610820451.9A Active CN107815835B (en) | 2016-09-13 | 2016-09-13 | High-efficiency condenser and washing machine with same |
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| WO (1) | WO2018050011A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108742459A (en) * | 2018-07-09 | 2018-11-06 | 华帝股份有限公司 | Internal cavity of bowl washer drying structure |
| CN110292731B (en) * | 2019-06-28 | 2023-09-15 | 合肥海尔滚筒洗衣机有限公司 | Clothes drying equipment condenser assembly and clothes drying equipment |
| CN113957682B (en) * | 2020-07-21 | 2023-11-28 | 重庆海尔滚筒洗衣机有限公司 | Condensing device and clothes treatment equipment with condensing device |
| 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 |
| CN114775214B (en) * | 2022-04-29 | 2023-08-29 | 珠海格力电器股份有限公司 | Clothes treatment device, washing and drying machine |
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| EP0480062A1 (en) * | 1990-04-26 | 1992-04-15 | Tosei Denki Kabushiki Kaisha | Apparatus for drying clothes and the like and method thereof |
| CN1766210A (en) * | 2004-10-27 | 2006-05-03 | 乐金电子(天津)电器有限公司 | Drying apparatus |
| CN101363187A (en) * | 2007-08-06 | 2009-02-11 | Lg电子株式会社 | Clothes dryer |
| CN102232131A (en) * | 2008-11-20 | 2011-11-02 | Bsh博世和西门子家用电器有限公司 | Condenser dryer having a heat pump, and method for operating the same |
| CN105544166A (en) * | 2016-02-03 | 2016-05-04 | 海信（山东）冰箱有限公司 | Water condensing device and washing and drying all-in-one machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04200590A (en) * | 1990-11-30 | 1992-07-21 | Matsushita Electric Ind Co Ltd | Clothes drier |
| KR20110009931A (en) * | 2009-07-23 | 2011-01-31 | 엘지전자 주식회사 | A laundry treatment machine |
| CN201746712U (en) * | 2010-02-02 | 2011-02-16 | 海尔集团公司 | Drying condenser of washing machine |
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- 2016-09-13 CN CN201610820451.9A patent/CN107815835B/en active Active
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- 2017-09-06 WO PCT/CN2017/100672 patent/WO2018050011A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0480062A1 (en) * | 1990-04-26 | 1992-04-15 | Tosei Denki Kabushiki Kaisha | Apparatus for drying clothes and the like and method thereof |
| CN1766210A (en) * | 2004-10-27 | 2006-05-03 | 乐金电子(天津)电器有限公司 | Drying apparatus |
| CN101363187A (en) * | 2007-08-06 | 2009-02-11 | Lg电子株式会社 | Clothes dryer |
| CN102232131A (en) * | 2008-11-20 | 2011-11-02 | Bsh博世和西门子家用电器有限公司 | Condenser dryer having a heat pump, and method for operating the same |
| CN105544166A (en) * | 2016-02-03 | 2016-05-04 | 海信（山东）冰箱有限公司 | Water condensing device and washing and drying all-in-one machine |
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| WO2018050011A1 (en) | 2018-03-22 |
| CN107815835A (en) | 2018-03-20 |
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