CN102286873A - Air inlet connection pipeline capable of preventing water from flowing backward for washing and drying integrated machine - Google Patents

Abstract

The invention discloses a waterproof backflow air inlet connection pipeline for an integrated washing and drying machine, which is installed at the rear of the outer cylinder of the integrated washing and drying machine, and the rear of the outer cylinder is provided with a drying air inlet, and the air inlet connecting pipeline The air outlet is correspondingly connected to the drying air inlet, and the air inlet connecting pipe is provided with a set of air guiding grooves to change the wind direction and prevent water and/or foam from entering the inside of the air inlet connecting pipe from the air outlet of the air inlet connecting pipe the blocking ribs. The air guide groove includes a first air guide groove protruding from the inside of the air inlet connection pipeline to the direction close to the outer cylinder and a corresponding air outlet of the air inlet connection pipeline protruding toward the opposite direction of the drying air inlet. The second air guide groove is formed, and the air intake direction is first raised and then lowered by the cooperation of the first air guide groove and the second air guide groove, and then guides the air toward the air outlet of the air inlet connecting pipeline. The improvement of the air inlet connection pipeline of the present invention has the characteristics of simple structure and low cost, and relatively prolongs the service life of the clothes drying function of the integrated washing and drying machine.

Description

A waterproof backflow air inlet connecting pipeline for washing and drying all-in-one machine

technical field

The invention relates to a washing and drying machine, in particular to a waterproof backflow air inlet connection pipeline for an integrated washing and drying machine.

Background technique

In the drying mechanism used for clothes washing and drying machines, the device for generating heated air adopts a heating method of heating air through a heater, and generally uses a heating wire or a heating pipe or a heat pump system as a heat source. In the existing heat pump type clothes drying device The air circulation channel is set as follows: the heated air heated by the condenser in the heat pump circulation system is sent into the drying room containing the clothes, and the hygroscopic air that has taken moisture from the clothes is sent back to the evaporator for dehumidification , the dehumidified air is heated again by the condenser and sent into the drying chamber.

The air inlet of the washer-dryer is generally set at the rear of the outer tub. During washing, foam or water can easily enter the air inlet through the rear air inlet, and flow back to the heater or heat pump system, which will affect the life of the drying system and even pose a safety hazard.

For example, the Chinese patent application No. 200820041966.X discloses a washing and drying machine using a heat pump system for drying. A heat pump system composed of evaporators, condensers, compressors, capillary tubes and other components is installed at the bottom of the outer tub. The heat pump system and The outer barrel is connected with the air inlet duct and the air outlet duct, and an air inlet is arranged at the rear and lower part of the outer barrel, and an air outlet is arranged at the front top. The above-mentioned structure uses the air inlet to be arranged at the rear and lower part of the outer barrel, which is more likely to cause foam or water to enter the air inlet.

In order to prevent foam or water from flowing back into the air inlet pipe, the installation of the air inlet pipe has been improved. The shape of the air inlet pipe goes around the top of the outer cylinder along the rear edge of the outer cylinder and then continues down . However, there will be a problem in this way, which will easily cause uneven distribution of hot air blown into the inner cylinder and poor drying effect.

In view of this, the present invention is proposed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an air inlet connection pipeline with a simple structure that uses its own structure to prevent water and/or foam from flowing back into the drying pipeline.

In order to solve the above technical problems, the basic idea of the technical solution adopted by the present invention is: a waterproof backflow air inlet connecting pipeline for the integrated washing and drying machine, which is installed at the rear of the outer cylinder of the integrated washing and drying machine, and the rear of the outer cylinder There is a drying air inlet, and the air outlet of the air inlet connection pipe is connected to the drying air inlet correspondingly. The air inlet connection pipe is provided with a set of air guide grooves to change the wind direction and prevent water and/or foam from entering the air. The air outlet of the connection pipeline enters the blocking rib inside the air inlet connection pipeline.

The air guide groove includes a first air guide groove formed inside the air inlet connecting pipeline protruding toward the direction close to the outer cylinder and a corresponding air inlet connecting pipeline air outlet protruding toward the opposite direction of the drying air inlet The second air guide groove is formed, and the air intake direction is first raised and then lowered by the cooperation of the first air guide groove and the second air guide groove, and then guides the air toward the air outlet of the air inlet connecting pipeline.

The air path leading to the second air guide groove in the air inlet connecting pipeline has a narrowed structure, which reduces the flow area in the unit to increase the air outlet speed.

The air inlet connection pipeline is a pipeline structure that bends upwards along the arc of one side of the rear part of the outer cylinder to the uppermost part. The air inlet is dry, and the barrier ribs are arranged in the air outlet.

The side wall of the second air guide groove corresponding to the direction of the air outlet is a slope, which gradually decreases from the bottom of the second air guide groove toward the direction of the air outlet.

A splitter plate is provided on the slope corresponding to the direction of the air outlet to divide the wind into at least two outlets. The cavity formed by the splitter plate and the inner side wall of the pipeline can make the outlet wind form a vortex to increase the wind speed.

The drying air inlet is arranged inclined from the back to the front, satisfying that the center line of the drying air inlet extends to the inner cylinder opening of the washing and drying machine, passing through the center of the inner cylinder and the lower edge of the front flange of the inner cylinder in turn.

The drying air inlet is arranged above the rear part of the outer cylinder, and the air inlet direction is inclined downward from the rear to the front flange of the inner cylinder.

The slope of the second air guiding groove is correspondingly matched with the inclined structure of the drying air inlet to increase the air inlet speed.

The blocking rib is a horizontal "Bu"-shaped structure, including oblique ribs and horizontal ribs, which are located at the position of the air outlet close to the air outlet direction in the pipeline, and the ends of the horizontal ribs and oblique ribs are fixed on the side walls of the air outlet On the top, the side of the horizontal rib corresponding to the air outlet cooperates with the oblique rib to block water and/or foam, and the opposite side guides the wind.

The air outlet of the air inlet connection pipeline is a frame structure, and reinforcing ribs are arranged in the frame.

The air inlet connection pipeline is a pipeline structure in which the front and rear parts are welded together by a hot plate, or the two parts are fastened together by a sealing structure screw.

Since the air inlet connection pipe needs to be installed at the rear of the outer cylinder, the outline of the air inlet connection pipe matches the circumference of the rear of the outer cylinder. The first air guide groove and the second air guide groove direct the wind direction downward and then change the wind direction to blow into the drying air inlet from the back to the front.

One end of the air inlet connection pipeline of the present invention is connected to the drying air inlet of the outer cylinder, and the other end is connected to the air duct. Inlet duct connection for wire heating. The heat pump system of the present invention has a modular structure, and the drying circulation air path is as follows: driven by the air supply fan, the humid hot gas is discharged upward from the front of the outer cylinder, filtered backward through the double-layer lint filter device, and then Down into the heat pump module at the bottom of the washing machine, the humid air is condensed into water through the evaporator first, and the condensed water flows into the lower water pan, and then is discharged out of the washing machine by the drain pump, after drying, it passes through the condenser, and then passes through the condenser The dissipated heat heats the gas, which is sucked out by the blower fan running at high speed. The heated high-temperature gas goes upwards and rushes into the outer cylinder from the air inlet connection pipe at the rear of the outer cylinder. There is an inner cylinder inside the outer cylinder, and the high-temperature gas enters the inner cylinder through the air hole at the rear of the inner cylinder. The wet clothes are heated and dried. There are many ventilation holes on the cylinder of the inner cylinder. With the high-speed operation of the air supply fan, the moisture in the inner cylinder passes through the holes on the inner cylinder and is sucked out from the front of the outer cylinder. Discharge upwards from the front of the outer cylinder.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

The present invention changes the structure of the air inlet connecting pipeline of the washing and drying machine, so that water and/or foam can be prevented from entering the drying structure during washing, thereby avoiding affecting the drying system; grooves to change the wind direction and increase the wind speed; since the direction of the air inlet is changed downward at the top, it can prevent splashed water and/or foam from flowing into the heating device along the air inlet pipe; further, in the air inlet connecting pipe The air outlet is provided with blocking ribs to block the water and/or foam splashed from the outer cylinder from flowing back into the pipeline, so that it can flow back into the outer cylinder; furthermore, the second air guide groove is provided with a slope corresponding to the air outlet, both It is convenient for the water and/or foam splashed in the outer cylinder to flow back into the cylinder, and it is also convenient for the air outlet direction to cooperate with the air inlet direction of the outer cylinder drying air inlet; in addition, the diverter plate on the slope forms the inner wall of the pipeline. The unique chamber can make the air outlet form a vortex first to increase the air outlet speed; the air path from the pipeline to the second air guide groove has a narrowed structure, which further increases the air outlet speed. The inclined design of the drying air inlet at the rear of the outer cylinder prolongs the route of the hot air in the inner cylinder, relatively increases the area and time of heat exchange between the hot air and the clothes, and improves the drying efficiency. The above-mentioned improved structure of the present invention is simple and low in cost, and relatively prolongs the service life of the clothes drying function of the integrated washing and drying machine.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the drying circulation air path of the air inlet connecting pipeline provided in the washing and drying machine according to the present invention;

Fig. 2 is the air intake schematic diagram of the air inlet connecting pipe of the present invention;

Fig. 3 is a schematic structural view of the air inlet connecting pipe of the present invention;

4 and 5 are schematic views of the section of the air inlet connecting pipe described in FIG. 3 in two directions.

Detailed ways

The waterproof and backflow air inlet connection pipeline for the integrated washing and drying machine of the present invention can be used in the integrated washing and drying machine with heat pump system drying clothes, and can also be used in the integrated washing and drying machine with electric heating wire drying clothes installed in the air duct . Since the electric heating wire installed in the air duct is less safe and easy to damage the clothes, so there are fewer drying methods of this kind at present. The integrated washing and drying machine described in the embodiment of the present invention uses a heat pump system to dry clothes, but does not Affecting the air inlet connecting pipeline described in the present invention is used in an all-in-one washing and drying machine in which electric heating wires are installed in the air duct to dry clothes.

As shown in Figure 1, one end of the air inlet connection pipeline 1 is connected to the drying air inlet 2 of the outer cylinder, and the other end is connected to the air duct 3, and the air duct 3 is connected to the air outlet 4 of the heat pump system. The heat pump system includes a compressor Machine 5, condenser 6, throttling device and evaporator 7, the compressor 5, condenser 6, throttling device, evaporator 7 are connected to compressor 5 in turn by the refrigerant circulation pipeline to form a circulation system, and the heat pump system passes through The upper and lower cover plates are integrated into one module structure, and the air deflector, the evaporator 7, the condenser 6 and the air supply fan are sequentially arranged between the heat pump air inlet 8 and the heat pump air outlet 4 to form a heating air path, and the evaporator The top of the 7 is provided with a water spray box 9 corresponding to the evaporator, and the bottom of the evaporator is provided with a water accumulation tray. There is a water inlet on the top of the water spray box, and there are multiple sprinkler holes on the bottom of the water spray box. The inside of the water spray box corresponding to the water inlet is provided with a water diversion impact slope to increase the uniformity of sprinkling water. The water from the water inlet enters the spray The inside of the water box collides with the water-dividing impact slope, and the water splashes into the surrounding gaps and sprinkles out from the sprinkling holes, with an even effect.

The two ends of the evaporator 7 and the condenser 6 parallel to the fins are respectively equipped with one side plate to fix the evaporator and the condenser as a whole, and the two side plates cooperate with the upper and lower cover plates to form a section of air passage, and the moist air passes through the evaporator The gap between the two fins of the condenser is cooled and dehumidified, and then passed between the two fins of the condenser to be heated into dry hot air. The fin pitch of the evaporator 7 is greater than the fin pitch of the condenser 6 so that when the incoming air passes through the gaps between the fins, turbulent flow is formed, and the difference is 0.1-0.5 mm.

The drying circulation air path is: driven by the air supply fan, the humid hot gas is discharged upward from the front of the outer cylinder 10, filtered backward through the double-layer lint filter device 11, and then enters the heat pump module at the bottom of the washing machine downward. First pass through the evaporator 7 to condense the humid air into water, and the condensed water flows into the lower water pan, and then is discharged out of the washing machine by the drain pump. After drying, it passes through the condenser 6, and the heat released by the condenser 6 turns the air Heated, sucked out by the high-speed operation of the blower fan, the heated high-temperature gas goes upwards, and rushes into the inside of the outer cylinder 10 from the air inlet connection pipeline 1 at the rear of the outer cylinder 10. There is an inner cylinder 12 inside the outer cylinder 10, and the high-temperature gas flows from the inside The air holes at the rear of the cylinder enter the inner cylinder 12 to heat and dry the wet clothes in the inner cylinder 12. There are many air holes on the cylinder body of the inner cylinder. With the high-speed operation of the air blower, the moisture in the inner cylinder from After the hole on the inner cylinder is pierced, it is sucked out from the front of the outer cylinder, and then discharged upwards from the front of the outer cylinder to complete a drying cycle and continue to dry clothes in a cycle.

As shown in Figure 2, the drying air inlet 2 is arranged above the rear part of the outer cylinder 10, and is arranged obliquely from the back to the front (from the outside to the inside), satisfying that the centerline K of the drying air inlet extends to the washing and drying area. The mouth of the inner cylinder 12 of the all-in-one machine passes through the center O of the inner cylinder 12 and the lower edge of the front flange 120 of the inner cylinder in sequence, that is, the air intake direction is inclined downward from the back to the front flange of the inner cylinder.

As shown in Figures 2 to 5, the air inlet connecting pipeline is a pipeline structure in which the front and rear parts are welded together by a hot plate, or the two parts are fastened together by sealing structure screws. The air outlet 13 at one end of the air inlet connection pipeline 1 is connected to the drying air inlet 2 correspondingly, and the other end is connected to the air duct 3, and is installed on the rear of the outer cylinder 10 through screws, including a side 14 adjacent to the rear of the outer cylinder, On the opposite side 15 and both sides 16, 17, the air inlet connection pipeline is a pipeline structure that bends upwards along the arc of one side edge of the rear part of the outer cylinder to the uppermost part, and the air outlet 13 is below the uppermost part, and the direction faces outwards The drying air inlet 2 at the rear of the tube, so the one side 16 of the two sides is an outer profile that matches the circumference of the rear edge of the outer tube, and the other side 17 is an inner profile; the outer profile matches the circumference of the rear of the outer tube , the direction of air intake is from the bottom along the circumference of the outer cylinder and then reaches the top, and then changes the direction to reach the air outlet and then changes the direction of the wind from the rear to the front and enters the outer cylinder 10 through the air outlet 13 and the drying air inlet 2. The air outlet 13 is a frame structure, and reinforcing ribs 18 are provided in the frame. The air inlet connecting pipeline 1 is provided with a set of air guide grooves 19 for changing the wind direction and preventing water and/or foam from entering the inside of the air inlet connecting pipeline from the air outlet of the air inlet connecting pipeline. The blocking ribs 20 It is arranged in the air outlet 13 described above.

The blocking rib 20 is a horizontal "Bu"-shaped structure, including oblique ribs 21 and transverse ribs 22, located at the air outlet 13 close to the air outlet direction in the pipeline, and the ends of the horizontal ribs 22 and oblique ribs 21 are fixed at the air outlet On the side wall, the side of the horizontal rib 22 corresponding to the air outlet cooperates with the oblique rib 21 to block water and/or foam, and the opposite side can play the role of guiding the wind.

The air guide groove 19 includes a first air guide groove 191 protruding from the inside of the air inlet connection pipeline toward the outer cylinder and a corresponding air outlet of the air inlet connection pipeline facing the opposite direction of the drying air inlet. The protruding second air guide groove 192, that is, the first air guide groove 191 is located on the side 14 adjacent to the rear part of the air inlet connection pipeline and the outer cylinder, and the second air guide groove 192 is located on the opposite side 15. Through the cooperation of the first air guiding groove 191 and the second air guiding groove 192, the direction of the air inlet is first raised and then lowered, and then guided toward the air outlet 13 of the air inlet connection pipe. The air path 24 leading to the second air guide groove 192 in the air inlet connection pipeline has a structure with a reduced diameter, and the air outlet speed is increased by reducing the flow area in the unit.

The side wall of the second air guide groove 192 corresponding to the direction of the air outlet 13 of the air inlet connection pipeline is a slope 30, which is gradually lowered from the bottom of the second air guide groove to the direction of the air outlet; The direction of the air outlet is provided with a splitter plate 31 that divides the wind into at least two outlets, and the cavity formed by the splitter plate 31 and the inner side wall of the pipeline can make the outlet wind form a vortex to increase the wind speed; preferably, the The slope 30 of the second air guide groove is correspondingly matched with the inclined structure of the drying air inlet 2 to increase the air intake speed.

The present invention changes the structure of the air inlet connecting pipeline of the washing and drying machine, so that water and/or foam can be prevented from entering the drying structure during washing, thereby avoiding affecting the drying system; grooves to change the wind direction and increase the wind speed; since the direction of the air inlet is changed downward at the top, it can prevent splashed water and/or foam from flowing into the heating device along the air inlet pipe; further, in the air inlet connecting pipe The air outlet is provided with blocking ribs to block the water and/or foam splashed from the outer cylinder from flowing back into the pipeline, so that it can flow back into the outer cylinder; furthermore, the second air guide groove is provided with a slope corresponding to the air outlet, both It is convenient for the water and/or foam splashed in the outer cylinder to flow back into the cylinder, and it is also convenient for the air outlet direction to cooperate with the air inlet direction of the outer cylinder drying air inlet; in addition, the diverter plate on the slope forms the inner wall of the pipeline. The unique chamber can make the air outlet form a vortex first to increase the air outlet speed; the air path in the pipeline is narrowed from the first air guide groove to the second air guide groove, which further increases the air outlet speed. The inclined design of the drying air inlet at the rear of the outer cylinder prolongs the route of the hot air in the inner cylinder, relatively increases the area and time of heat exchange between the hot air and the clothes, and improves the drying efficiency. The above-mentioned improved structure of the present invention is simple and low in cost, and relatively prolongs the service life of the clothes drying function of the integrated washing and drying machine.

Claims (8)

1. air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine, be installed on the rear portion of washing-drying integral machine urceolus, the urceolus rear portion is provided with the oven dry air inlet, air intake connecting line air outlet and oven dry air inlet corresponding connection is characterized in that: described air intake connecting line is provided with the wind-guiding groove of one group of change wind direction and anti-sealing and/or foam are entered air intake connecting line inside by air intake connecting line air outlet the muscle that stops.

2. a kind of air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine according to claim 1, it is characterized in that: described wind-guiding groove comprises that one protrudes the second wind-guiding groove that form to first a wind-guiding groove that protrude to form near the urceolus direction and a corresponding air intake connecting line air outlet to oven dry air inlet opposite direction in air intake connecting line inside, the cooperation of air intake by the first wind-guiding groove and the second wind-guiding groove with the air intake direction raise earlier afterwards fall after again towards air intake connecting line air outlet wind-guiding.

3. a kind of air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine according to claim 1, it is characterized in that: described air intake connecting line be one along the urceolus rear portion one lateral edges radian is bent upwards pipeline structure to topmost, air intake connecting line air outlet is below topmost, direction is towards the oven dry air inlet at urceolus rear portion, and the described muscle that stops is located in the described air outlet.

4. a kind of air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine according to claim 2, it is characterized in that: the limit wall of the corresponding described air outlet direction of the described second wind-guiding groove is a slope, and is gradually low to described air outlet direction by the second wind-guiding bottom portion of groove.

5. a kind of air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine according to claim 4, it is characterized in that: corresponding air outlet direction is provided with the flow distribution plate that wind is divided at least two bursts of air-out on the described slope.

6. according to claim 1 or 4 described a kind of air intake connecting lines that are used for the anti-aqueous reflux of washing-drying integral machine, it is characterized in that: described oven dry air inlet by after the setting that turns forward, satisfy: the center line of oven dry air inlet extends to that nozzle passes through inner core center and inner core forward flange lower limb successively in the washing-drying integral machine.

7. a kind of air intake connecting line that is used for the anti-aqueous reflux of washing-drying integral machine according to claim 6 is characterized in that: described oven dry air inlet is located at urceolus rear portion top, the air intake direction by after slope down to inner core forward flange lower limb forward.

8. according to claim 1 or 3 described a kind of air intake connecting lines that are used for the anti-aqueous reflux of washing-drying integral machine, it is characterized in that: the described muscle that stops is horizontal " fore-telling " font structure, comprise diagonal bar and horizontal bar, be located at described air outlet near position by air-out direction in the pipeline, the end of horizontal bar and diagonal bar is fixed on the air outlet side wall, corresponding air outlet one side of horizontal bar cooperates block water and/or foam, an opposite side wind-guiding with diagonal bar.

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