CN210031236U

CN210031236U - Drying air channel structure and washing machine with same

Info

Publication number: CN210031236U
Application number: CN201920645016.6U
Authority: CN
Inventors: 郭世建; 邹建煌; 刘中杰; 和浩浩; 耿付帅
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-02-07
Anticipated expiration: 2029-05-07

Abstract

The utility model provides a stoving wind channel structure and have its washing machine, stoving wind channel structure includes: the heat exchange assembly comprises a heat exchange flow channel, the heat exchange flow channel is used for heat exchange between gas and cooling liquid, the heat exchange assembly also comprises a cooling liquid tank for feeding the cooling liquid, the cooling liquid tank and the heat exchange flow channel are arranged at intervals, a water outlet hole is formed in the wall of the cooling liquid tank, and the water outlet hole is used for communicating the cooling liquid tank with the heat exchange flow channel; wherein, the cooling cistern encircles the setting of heat transfer runner, and the apopore is a plurality of, and a plurality of apopores set up along the extending direction interval of cooling cistern. The utility model discloses a stoving wind channel structure has solved the less problem of stoving wind channel heat transfer area among the prior art.

Description

Drying air channel structure and washing machine with same

Technical Field

The utility model relates to a washing machine field particularly, relates to a stoving wind channel structure and have its washing machine.

Background

The drying air duct is an important component of the washing and drying machine. Both the electric heating type washing and drying machine and the heat pump type washing and drying machine dry the laundry in the drum by heating air.

In the specific drying process, high-temperature and high-humidity gas generated by drying is circulated back to the drying air duct through the centrifugal fan, and is condensed and separated out after exchanging heat with cold water injected into the drying air duct. But there are several problems in current stoving wind channel:

1. the high-temperature high-humidity gas and the cold water are mixed for heat exchange, so that the heat exchange area is small, and the heat exchange efficiency is low;

2. negative pressure is generated near the centrifugal fan, and a part of condensed water is sucked into the air channel and circularly enters the roller, so that the drying efficiency is influenced;

3. the flock that the clothing produced in the washing can be piled up in the wind channel along with high temperature and high humidity gas entering stoving wind channel, influences heat exchange efficiency, still can cause secondary pollution to the clothing along with air current recirculation gets into the inner tube again.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a stoving wind channel structure and washing machine who has it to solve the less problem of stoving wind channel heat transfer area among the prior art.

In order to achieve the above object, according to the utility model discloses an aspect provides a stoving wind channel structure, include: the heat exchange assembly comprises a heat exchange flow channel, the heat exchange flow channel is used for heat exchange between gas and cooling liquid, the heat exchange assembly also comprises a cooling liquid tank for feeding the cooling liquid, the cooling liquid tank and the heat exchange flow channel are arranged at intervals, a water outlet hole is formed in the wall of the cooling liquid tank, and the water outlet hole is used for communicating the cooling liquid tank with the heat exchange flow channel; wherein, the cooling cistern encircles the setting of heat transfer runner, and the apopore is a plurality of, and a plurality of apopores set up along the extending direction interval of cooling cistern.

Furthermore, the cooling liquid groove is an annular groove which is positioned on the outer side of the heat exchange flow channel.

Further, the heat exchange assembly includes: the heat exchange flow channel is positioned in the cavity of the first cylinder, the cooling liquid tank is arranged on the first cylinder, and the cooling liquid tank is positioned outside the cavity of the first cylinder; wherein, a plurality of apopores set up on first barrel along the circumferential direction interval of first barrel.

Further, the heat transfer runner includes the first runner of circulation gas and the second runner that is used for circulating cooling liquid, and heat exchange assembly still includes: the second cylinder body penetrates through the first cylinder body, the inner cavity of the second cylinder body comprises a first flow channel, and a second flow channel is formed between the outer wall of the second cylinder body and the cavity wall of the first cylinder body; wherein, the cooling liquid groove is communicated with the second flow channel through the water outlet hole.

Further, the first cylinder includes: the first cylinder section and the second cylinder form a second flow passage; the first connecting section is connected with the outer wall of the first cylinder section, and a cooling liquid tank is formed between the first connecting section and the first cylinder section.

Further, the first cylinder section is a circular tube, the cooling liquid groove is an annular groove, and the cross section of the first connecting section in the axial direction of the first cylinder section is L-shaped, so that the cross section of the annular groove in the axial direction of the first cylinder section is U-shaped.

Further, the second cylinder includes: a second cylinder section having a first flow passage, a second flow passage being formed between the first cylinder section and the second cylinder section; and the outer wall of the second cylinder section and the cavity wall of the first cylinder section are arranged at intervals, so that the second flow passage surrounds the first flow passage.

Further, the second cylinder further includes: the second connecting section is connected with the second cylinder section and is provided with an exhaust cavity communicated with the inner cylinder of the washing machine, and the exhaust cavity is communicated with the first flow channel; wherein, the first linkage segment is connected with the second linkage segment near the one end of second barrel section.

Furthermore, a first connecting portion is arranged on the second connecting section, a second connecting portion matched with the first connecting portion is arranged on the first connecting section, and the first connecting portion is connected with the second connecting portion.

Furthermore, the first connecting part is a protrusion, the second connecting part is a groove, and the first connecting part is clamped in the second connecting part; or the first connecting part is a groove, the second connecting part is a bulge, and the second connecting part is clamped in the first connecting part.

Furthermore, one side of the second connecting section, which is close to the first cylinder section, is provided with an avoiding groove, and the groove wall of the avoiding groove is arranged at an interval with the first cylinder section.

Further, stoving wind channel structure still includes: and the baffle plate is arranged in the first flow passage.

Furthermore, the baffle plate is a plurality of, and a plurality of baffle plates set up along the extending direction interval of first runner.

Furthermore, at least part of the water outlet hole is an expansion hole section, and the expansion hole section is gradually expanded in the direction from the heat exchange flow channel to the cooling liquid tank.

According to the utility model discloses an on the other hand provides a washing machine, including the stoving wind channel structure, the stoving wind channel structure is foretell stoving wind channel structure.

Further, the washing machine further includes: the heat exchange flow channel is communicated with the inner barrel; the heating part is used for heating the gas after heat exchange and arranged between the inner barrel and the drying air channel structure so as to send the gas heated by the heating part into the inner barrel.

The utility model discloses a stoving wind channel structure is through being provided with a plurality of apopores between cooling cistern and heat transfer runner to make the cooling liquid who is used for the heat transfer carry out the heat transfer with gas in order to spray formation entering into the heat transfer runner, because the effect that sprays of cooling liquid makes the flow area of cooling liquid increase, cooling liquid also can increase with gaseous heat transfer area, has solved the less problem of stoving wind channel heat transfer area among the prior art.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and 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 and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a drying duct structure according to the present invention;

fig. 2 shows an exploded schematic view of an embodiment of a drying duct structure according to the present invention;

fig. 3 shows a schematic structural view of a viewing angle of the drying duct structure according to the present invention;

fig. 4 shows a schematic cross-sectional structure diagram of a drying duct structure according to the present invention;

fig. 5 is a schematic sectional view of a second cylinder of the drying duct structure according to the present invention;

fig. 6 is a schematic cross-sectional view of a first embodiment of a first cylinder of a drying duct structure according to the present invention;

fig. 7 is a schematic sectional view of a first bent pipe of a drying duct structure according to the present invention;

fig. 8 is a partial structural view illustrating a first drum of the drying duct structure of fig. 6;

fig. 9 is a schematic cross-sectional view of a second embodiment of the first cylinder of the drying duct structure according to the present invention;

fig. 10 is a partial structural view illustrating a first drum of the drying duct structure of fig. 9;

fig. 11 shows a schematic view of the working process of the drying air channel structure according to the present invention.

Wherein the figures include the following reference numerals:

10. a second cylinder; 11. a first flow passage; 12. a first connection portion; 13. a second barrel section; 131. a second straight pipe; 132. a second bend pipe; 14. a second connection section; 141. an exhaust chamber; 142. an avoidance groove; 20. a first cylinder; 21. a second flow passage; 22. a cooling liquid tank; 23. a water outlet hole; 24. a first cylinder section; 241. a first straight pipe; 242. a first bend pipe; 243. a third connecting portion; 244. a fourth connecting portion; 25. a first connection section; 26. a second connecting portion; 30. a water pipe; 40. a baffle plate; 50. and a filtering part.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a stoving wind channel structure please refer to fig. 1 to fig. 10, and stoving wind channel structure includes: the heat exchange component comprises a heat exchange flow channel, the heat exchange flow channel is used for heat exchange between gas and cooling liquid, the heat exchange component also comprises a cooling liquid tank 22 used for sending the cooling liquid, the cooling liquid tank 22 and the heat exchange flow channel are arranged at intervals, a water outlet hole 23 is formed in the wall of the cooling liquid tank 22, and the water outlet hole 23 is used for communicating the cooling liquid tank 22 and the heat exchange flow channel; wherein, cooling liquid tank 22 encircles the setting of heat transfer runner, and apopore 23 is a plurality of, and a plurality of apopores 23 set up along cooling liquid tank 22's extending direction interval.

The utility model discloses a stoving wind channel structure is through being provided with a plurality of apopores 23 between cooling cistern 22 and heat transfer runner to make the cooling liquid who is used for the heat transfer carry out the heat transfer with gas with spraying the formation and entering into the heat transfer runner, because the effect that sprays of cooling liquid makes the flow area of cooling liquid increase, cooling liquid also can increase with gaseous heat transfer area, has solved the less problem of stoving wind channel heat transfer area among the prior art.

According to the specific structure and position of the cooling liquid groove 22, the cooling liquid groove 22 is an annular groove, and the annular groove is located on the outer side of the heat exchange flow channel.

In this embodiment, through setting up cooling fluid groove 22 into the annular groove, and the annular groove is located the outside of heat transfer runner, promptly at specific heat transfer in-process, is located the cooling liquid of annular groove and sprays to the heat transfer runner in through a plurality of apopores 23.

To heat exchange assembly's concrete structure, heat exchange assembly includes: the heat exchange flow channel is positioned inside the cavity of the first cylinder 20, the cooling liquid tank 22 is arranged on the first cylinder 20, and the cooling liquid tank 22 is positioned outside the cavity of the first cylinder 20; wherein, a plurality of outlet holes 23 are provided on the first cylinder 20 at intervals along the circumferential direction of the first cylinder 20.

In this embodiment, the heat exchange flow channel is located inside the cavity of the first cylinder 20, i.e. the heat exchange of the gas and the cooling liquid is completed in the first cylinder 20, and the heat exchange flow channel can be a mixed flow channel formed by the gas and the cooling liquid, and can also be an independent flow channel separated by the gas and the cooling liquid, as long as the heat exchange requirement is ensured.

Preferably, the heat exchange flow channel includes a first flow channel 11 for flowing gas and a second flow channel 21 for flowing cooling liquid, and the heat exchange assembly further includes: the second cylinder 10 is arranged in the first cylinder 20 in a penetrating mode, an inner cavity of the second cylinder 10 comprises a first flow channel 11, and a second flow channel 21 is formed between the outer wall of the second cylinder 10 and the cavity wall of the first cylinder 20; wherein, the cooling liquid tank 22 is communicated with the second flow channel 21 through the water outlet 23.

In the present embodiment, the heat exchange flow channels include a first flow channel 11 for flowing gas and a second flow channel 21 for flowing cooling liquid, i.e. gas and cooling liquid flow in two separate flow channels. The inner cavity of the second cylinder 10 includes a first flow channel 11, and a second flow channel 21 is formed between the outer wall of the second cylinder 10 and the cavity wall of the first cylinder 20.

In this embodiment, the cooling liquid is sprayed into the second flow channel 21, i.e. onto the cylindrical wall of the second cylinder 10, through the water outlet holes 23, and then exchanges heat with the gas in the first flow channel 11.

In this embodiment, the drying air channel structure is arranged by isolating the first flow channel 11 and the second flow channel 21, so that the gas and the cooling liquid to be subjected to heat exchange are isolated, the heat exchange area of the gas and the cooling liquid is increased, and the heat exchange effect of the drying air channel structure can be improved. The second cylinder 10 is arranged in the first cylinder 20 in a penetrating manner, the inner cavity of the second cylinder 10 comprises a first flow channel 11, a second flow channel 21 is formed between the outer wall of the second cylinder 10 and the wall of the first cylinder 20, namely, the second flow channel 21 is positioned outside the first flow channel 11, and when gas and cooling liquid exchange heat, the gas and the cooling liquid do not transfer heat in a mixed manner, so that the heat exchange area of the gas and the cooling liquid can be increased.

In this embodiment, the gas is a high temperature and high humidity gas, and the cooling liquid is condensed water.

The second cylinder 10 and the first cylinder 20 are connected with respect to the relationship between the second cylinder 10 and the first cylinder 20; the outer wall of the second cylinder 10 and the wall of the first cylinder 20 are spaced apart from each other, so that the second flow channel 21 surrounds the first flow channel 11.

In this embodiment, the second cylinder 10 is connected to the first cylinder 20, that is, the drying air duct structure is composed of two cylinders connected to each other, and the overall structure is relatively simple. And equal interval setting between the outer wall of second barrel 10 and the chamber wall of first barrel 20 to can make second runner 21 encircle the setting of first runner 11, the heat transfer area of the two is great, is favorable to improving heat exchange efficiency, thereby can improve the high temperature and high humidity gaseous condensation volume.

Preferably, the first flow channel 11 is used for circulating gas, and the second flow channel 21 is used for circulating cooling liquid; wherein, be provided with the cooling fluid bath 22 that is used for sending into cooling liquid on the first barrel 20, cooling fluid bath 22 and second runner 21 interval set up, are provided with apopore 23 on the cell wall of cooling fluid bath 22, and apopore 23 is used for communicateing cooling fluid bath 22 and second runner 21.

In the present embodiment, the first cylinder 20 is provided with the cooling liquid tank 22, and the wall of the cooling liquid tank 22 is provided with the water outlet 23 for communicating the cooling liquid tank 22 with the second flow channel 21, that is, after the cooling liquid enters the cooling liquid tank 22, the cooling liquid enters the second flow channel 21 through the water outlet 23, so that the cooling liquid and the gas realize heat exchange.

To the concrete structure of cooling fluid bath 22 and apopore 23, cooling fluid bath 22 encircles second runner 21 and sets up, and apopore 23 is a plurality of, and a plurality of apopores 23 set up along cooling fluid bath 22's extending direction interval.

In the present embodiment, the cooling liquid groove 22 is disposed around the second flow passage 21, i.e., the cooling liquid groove 22 is an annular groove disposed around the circumferential direction of the second flow passage 21. And apopore 23 is a plurality of, and a plurality of apopores 23 set up along the extending direction interval of cooling fluid bath 22, and a plurality of apopores 23 set up along the circumferential direction of second runner 21 promptly to can make in cooling liquid discharges the second runner 21 from each direction of cooling fluid bath 22, with this area of contact that has increased cooling liquid and second barrel 10, thereby can improve its heat transfer area with gaseous.

As for a specific structure of the first barrel 20, as shown in fig. 3, the first barrel 20 includes: a first barrel section 24, the second runner 21 being formed between the first barrel section 24 and the second barrel 10; and a first connecting section 25, wherein the first connecting section 25 is connected with the outer wall of the first cylinder section 24, and the cooling liquid groove 22 is formed between the first connecting section 25 and the first cylinder section 24.

In the present embodiment, the first cylinder 20 is composed of a first cylinder section 24 and a first connecting section 25 connected in sequence, wherein the first cylinder section 24 and the second cylinder 10 form a second flow passage 21 therebetween, the first connecting section 25 and the first cylinder section 24 form a cooling liquid tank 22 therebetween, and the first connecting section 25 is used for connecting with the second cylinder 10.

Preferably, the first cylinder section 24 is a circular tube, the cooling fluid bath 22 is an annular groove, and the first connecting section 25 has an L-shaped cross-section in the axial direction of the first cylinder section 24, such that the annular groove has a U-shaped cross-section in the axial direction of the first cylinder section 24.

As for a specific structure of the second cylinder 10, as shown in fig. 5, the second cylinder 10 includes: a second cylinder section 13, the second cylinder section 13 having a first flow passage 11, the first cylinder section 24 and the second cylinder section 13 forming a second flow passage 21 therebetween; wherein the outer wall of the second cylinder section 13 and the wall of the first cylinder section 24 are spaced apart so that the second flow path 21 surrounds the first flow path 11.

Correspondingly, the second cylinder 10 further comprises: a second connection section 14, the second connection section 14 being connected to the second barrel section 13, the second connection section 14 having an exhaust chamber 141 for communicating with an inner barrel of the washing machine, the exhaust chamber 141 communicating with the first flow path 11; wherein the first connecting section 25 is connected to the second connecting section 14 at an end thereof adjacent to the second cylinder section 13.

In this embodiment, the second cylinder 10 is composed of a second cylinder section 13 and a second connecting section 14 connected in series, the second cylinder section 13 has a first flow passage 11, a second flow passage 21 is formed between the first cylinder section 24 and the second cylinder section 13, and a first connecting section 25 is connected to one end of the second connecting section 14 close to the second cylinder section 13.

In the present embodiment, the second connection section 14 is provided with the exhaust cavity 141 for communicating with the inner tub of the washing machine, so that the heat-exchanged gas can enter the inner tub of the washing machine through the exhaust cavity 141 to dry the laundry.

In order to connect the first connection section 25 and the second connection section 14, as shown in fig. 5 and 6, the first connection portion 12 is provided on the second connection section 14, the second connection portion 26 adapted to the first connection portion 12 is provided on the first connection section 25, and the first connection portion 12 is connected to the second connection portion 26.

Aiming at the specific structure of the first connecting part 12 and the second connecting part 26, the first connecting part 12 is a protrusion, the second connecting part 26 is a groove, and the first connecting part 12 is clamped in the second connecting part 26; or, the first connecting portion 12 is a groove, the second connecting portion 26 is a protrusion, and the second connecting portion 26 is clamped in the first connecting portion 12.

In this embodiment, the protrusion is an annular protrusion, and the groove is an annular groove adapted to the annular protrusion. The cross section of the protrusion is a trapezoidal surface, the cross section of the groove is also trapezoidal, and when the mounting tool is specifically mounted, the protrusion is clamped in the groove after passing through the opening of the groove.

In this embodiment, the connection between the first connection portion 12 and the second connection portion 26 is a snap connection, which is easy to assemble and disassemble.

Preferably, the first cylinder section 24 and the second cylinder section 13 are both circular pipes, and the end of the first cylinder section 24 away from the first connecting section 25 is aligned with the end of the second cylinder section 13 away from the second connecting section 14; wherein, the end of the first flow channel 11 far away from the second connecting section 14 is used for feeding gas, and the end of the second flow channel 21 far away from the first connecting section 25 is used for feeding out the cooling liquid after heat exchange.

In this embodiment, the first and second cylinder sections 24 and 13 are both circular tubes, i.e. the first flow channel 11 is circular in cross-section and the second flow channel 21 is circular in cross-section, gas being fed from the bottom end of the first flow channel 11 and cooling liquid being fed from the top end of the second flow channel 21.

With respect to the specific structure of the first cylinder section 24, as shown in fig. 3, the first cylinder section 24 includes a first straight pipe 241 and a first bent pipe 242, the second cylinder section 13 includes a second straight pipe 131 and a second bent pipe 132, the second straight pipe 131 is inserted into the first straight pipe 241, and the second bent pipe 132 is inserted into the first bent pipe 242; wherein, one end of the first bent pipe 242 away from the first straight pipe 241 is aligned with one end of the second bent pipe 132 away from the second straight pipe 131.

In the present embodiment, the first cylinder section 24 is composed of a first straight tube 241 and a first curved tube 242, the second cylinder section 13 is composed of a second straight tube 131 and a second curved tube 132, the first straight tube 241 and the second straight tube 131 are straight tubes, and the first curved tube 242 and the second curved tube 132 are curved tubes.

Preferably, the first straight pipe 241 is connected with the first bent pipe 242, and the second straight pipe 131 is integrally formed with the second bent pipe 132; or, the first straight pipe 241 and the first bent pipe 242 are integrally formed, and the second straight pipe 131 is connected with the second bent pipe 132; alternatively, the first straight pipe 241 is connected to the first bent pipe 242, and the second straight pipe 131 is connected to the second bent pipe 132.

In this embodiment, when the first straight pipe 241 and the first bent pipe 242 are two branched pipes, the first straight pipe 241 is provided with a third connecting portion 243, the first bent pipe 242 is provided with a fourth connecting portion 244, and the third connecting portion 243 and the fourth connecting portion 244 are connected.

Preferably, the inner diameter of the first straight tube 241 is larger than the inner diameter of the first curved tube 242.

In the present embodiment, the inner diameter of the first straight pipe 241 is larger than the inner diameter of the first bent pipe 242, that is, when the outer diameters of the first straight pipe 241 and the first bent pipe 242 are the same, the wall thickness of the first straight pipe 241 is thinner than that of the first bent pipe 242.

In this embodiment, a throttling device is formed at the bottom end of the first cylinder 20 by reducing the sectional area (i.e. the inner diameter of the first straight pipe 241 is larger than the inner diameter of the first bent pipe 242), so that a certain amount of cold water is stored in a certain height at the tail end of the first cylinder 20, the flowing speed of the cold water is reduced, the heat exchange time between the cold water and the high-temperature and high-humidity gas is prolonged, and the effective heat exchange of the high-temperature and high-humidity gas at the bottom end of the second cylinder 10 is ensured.

In this embodiment, the sectional area of the throttling device is reduced, that is, the diameter of the outlet is smaller than the normal size of the outer cylinder, under the action of pressure, water jet with a certain initial speed is generated to flush the clothes flock on the filter screen, and the clothes flock is discharged out of the washing machine through the drain pipe.

In the present embodiment, the third connecting portion 243 is a protrusion, and the fourth connecting portion 244 is a groove; alternatively, the third connecting portion 243 is a groove, and the fourth connecting portion 244 is a protrusion. Wherein, the bulge is an annular bulge, and the groove is an annular groove matched with the annular bulge. The cross section of the protrusion is a trapezoidal surface, the cross section of the groove is also trapezoidal, and when the mounting tool is specifically mounted, the protrusion is clamped in the groove after passing through the opening of the groove.

In this embodiment, the connection between the third connection portion 243 and the fourth connection portion 244 is formed by a snap-fit method, so as to facilitate assembly and disassembly.

For the convenience of installation, as shown in fig. 5, the side of the second connecting segment 14 adjacent to the first cylinder segment 24 is provided with an avoiding groove 142, and the groove wall of the avoiding groove 142 is spaced apart from the first cylinder segment 24.

In the present embodiment, the avoidance groove 142 is provided on the side of the second connecting section 14 close to the first cylinder section 24, and the groove wall of the avoidance groove 142 is spaced apart from the first cylinder section 24, so that the first cylinder section 24 and the second connecting section 14 can be prevented from interfering with each other.

In the present embodiment, the bypass groove 142 is provided opposite to the partial segment of the cooling liquid groove 22.

In order to send the cooling liquid into the cooling liquid tank 22, as shown in fig. 4, the drying air duct structure further includes: and the water pipe 30 is arranged on the first connecting section 25, and the cavity of the water pipe 30 is communicated with the cooling liquid tank 22 so that the cooling liquid is sent into the cooling liquid tank 22 through the water pipe 30.

In this embodiment, the cooling liquid is fed into the cooling liquid tank 22 through a water pipe 30, and the water pipe 30 is a bent pipe.

In order to strengthen the heat exchange effect, the drying air duct structure further comprises: a baffle 40, the baffle 40 being disposed within the first flow passage 11.

In the present embodiment, the baffle plate 40 is disposed in the first flow passage 11, so that the flow distance of the gas can be increased, thereby improving the heat exchange effect with the cooling liquid.

In order to further enhance the heat exchange effect, the number of the baffle plates 40 is plural, and the plural baffle plates 40 are provided at intervals in the extending direction of the first flow channel 11.

In the present embodiment, the plurality of baffles 40 are arranged at intervals along the extending direction of the first flow passage 11, and the plurality of baffles 40 are arranged alternately, that is, if the first flow passage 11 is divided into two parts, two adjacent baffles 40 are respectively connected to the wall body of the second cylinder 10 located at the two parts.

Preferably, the baffle plate 40 includes a fixed end connected with the second cylinder 10 and a free end spaced apart from the second cylinder 10; wherein the free end of each baffle 40 can project onto the baffle 40 adjacent thereto.

In this embodiment, the inner diameter of the second cylinder 10 is provided with a baffle 40, so that the high-temperature and high-humidity gas can flow in a bow shape in the second cylinder 10, thereby enhancing the heat exchange effect. The length of the baffle plate 40 is larger than the radius of the second cylinder 10, about 2/3 of the diameter of the second cylinder 10, and the baffle plates are evenly distributed on two sides of the inner wall of the second cylinder 10 in a staggered way, and the distance between two adjacent baffle plates 40 is larger than the length of the baffle plate 40.

In order to prevent the laundry lint from accumulating in the drying air duct structure, as shown in fig. 2 and 4, the drying air duct structure further includes: the filter part 50 is provided on at least one of the filter part 50, the second cylinder 10 and the first cylinder 20, and the filter part 50 is used for filtering the gas fed in and the cooling liquid and gas after heat exchange.

In this embodiment, when the second cylinder 10 is provided with the filtering portion 50, the filtering portion 50 is located at the outlet of the first flow channel 11, so that the filtering portion 50 can filter the gas entering the inner barrel. When the filter unit 50 is provided in the first cylinder 20, the filter unit 50 is shielded at the inlet of the first flow channel 11 and the outlet of the second flow channel 21, so that the filter unit 50 can filter the fed gas and the heat-exchanged cooling liquid.

In the embodiment, the filter screens (the filter parts 50) are additionally arranged at the upper end and the lower end of the second cylinder 10, so that the clothes flocks are prevented from being accumulated in the first flow passage 11 and the second flow passage 21, and the influence on the heat exchange efficiency and the secondary pollution of the washed clothes are avoided; the condensed water (cooling liquid) flows along the outer side of the filter screen, and can wash away the clothes sundries and the like on the filter screen.

In this embodiment, the end of the first cylinder 20 is connected to the second cylinder 10, and the cavity wall of the first cylinder 20 is spaced apart from the second cylinder 10.

In this embodiment, stoving wind channel main structure comprises two barrels, and overall structure is comparatively simple, and can also guarantee heat exchange efficiency.

In order to improve the water outlet effect of the water outlet hole 23, at least a part of the water outlet hole 23 is an expansion hole section, and the expansion hole section is gradually expanded in the direction that the heat exchange flow channel extends to the cooling liquid tank 22.

In this embodiment, 23 at least part of apopore is the expansion hole section, expands the hole section promptly and gets into apopore 23 by cooling liquid and shrink gradually to the orientation of discharge apopore 23 to can produce certain pressure at cooling liquid spraying in-process, guarantee that cooling liquid can effectually spray in heat transfer passageway, increase heat transfer area, improve heat exchange efficiency.

For the first embodiment of the water outlet 23, as shown in fig. 6 and 8, the water outlet 23 is a circular hole, that is, a cylindrical hole as a whole, and the diameter of the circular water outlet is about 3 mm.

For the second embodiment of the water outlet 23, as shown in fig. 9 and 10, the water outlet 23 is a circular hole, the diameter of the circular water outlet is about 3mm, and a draft angle of about 20 ° is formed from outside to inside to form a "shrinkage cavity", that is, the water outlet can be understood as a tapered hole.

To the utility model discloses a specific embodiment of stoving wind channel structure:

the utility model discloses a stoving wind channel structure mainly comprises the urceolus (first barrel 20) that has annular groove (cooling cistern 22) and play water round hole (apopore 23) that the cooling water flows and the inner tube (second barrel 10) that has baffling board 40 that high temperature and high humidity gas flows. The utility model discloses a stoving wind channel structure has changed the structure in traditional stoving wind channel and has mixed heat transfer's mode, keeps apart cold water and humid tropical gas, has increased heat transfer area, and cold and hot medium flows against the current, carries out thermal convection and heat-conduction heat transfer. In order to ensure the heat exchange effect, the wall thicknesses of the inner cylinder, the outer cylinder and the baffle plate are not too thick, and in order to avoid vibration and be too thin, the wall thicknesses are not too thick and are between 2mm and 3mm in consideration of the product structure.

In the embodiment, the outer cylinder adopts a ring-shaped water spraying structure. An annular groove is designed between the outer side buckle (the second connecting part 26) at the top end of the outer cylinder and the inner side baffle (the first connecting section 25), and meanwhile, if a circular water outlet hole is formed in the baffle, all-dimensional spraying of 360 degrees in the horizontal radial direction can be realized.

In this embodiment, the radial direction of the inner cylinder is provided with the baffle plate 40, so that the high-temperature and high-humidity gas realizes the bow-shaped flow in the inner cylinder, and the heat exchange effect is enhanced. The length of the baffle plate 40 is larger than the radius of the inner cylinder, is about 2/3 of the diameter of the inner cylinder, is uniformly distributed on two sides of the inner wall of the inner cylinder in a staggered way, and the distance is larger than the length of the baffle plate 40.

In this embodiment, the filter screens (filter parts 50) are additionally arranged at the upper end and the lower end of the drying air duct to prevent the clothes flock from accumulating in the drying air duct, so as to avoid the influence on the heat exchange efficiency and the secondary pollution of the washed clothes; the condensed water flows along the outer side of the filter screen, and can wash away the clothes sundries and the like on the filter screen.

In this embodiment, after the heat transfer, most of the high temperature and high humidity gas has been condensed and separated out, and the condensation amount can be further increased in the heat transfer process that flows between the baffle plates 40, thereby effectively improving the problem of partial condensate water backflow air channel caused by the centrifugal fan.

In this embodiment, the high temperature and high humidity gas flows from bottom to top in the inner cylinder, and the cold water flows from top to bottom in the outer cylinder. The high-temperature high-humidity gas inlet of the drying air duct is connected with a drum system of the washing and drying machine, and the outlet of the drying air duct is connected with a centrifugal fan to form a closed circulating air duct. A plurality of baffle plates are arranged in the inner cylinder, so that high-temperature and high-humidity gas forms arch flow in the inner cylinder; meanwhile, an annular groove is designed between the outer side buckle at the top end of the outer cylinder and the inner side baffle, and meanwhile, a plurality of circular water outlet holes are formed in the baffle, so that 360-degree spraying around the horizontal radial direction can be realized. The inner barrel, the outer barrel and the bent pipe are connected through the buckles, and the device is simple and convenient to assemble and disassemble.

To the utility model discloses a realization mode introduction of stoving wind channel structure specifically can refer to fig. 11:

when the washing and drying machine is in a drying working condition, the centrifugal fan operates to exhaust air, high-temperature and high-humidity gas enters the inner barrel from bottom to top at a certain initial speed and flows, and the high-temperature and high-humidity gas flows in the inner barrel in a bow shape due to the baffle plate 40 arranged on the inner wall of the inner barrel, so that the heat exchange area and the temperature difference are increased. Meanwhile, cold water also enters the outer barrel from top to bottom at a certain initial speed, and in order to enable the water outlet circular holes to simultaneously discharge water, the annular groove is formed, condensed water firstly enters the annular groove through the water inlet, flows out through the water outlet circular holes after filling the annular groove, forms a 360-degree spraying effect, and is sprayed on the outer wall surface of the inner barrel in an all-around manner, so that the heat exchange area with high-temperature high-humidity gas can be effectively increased. Therefore, the cold and hot media realize countercurrent flow heat exchange. Meanwhile, in order to avoid the leakage phenomenon, the height of the water outlet circular hole is required to be lower than that of the buckle of the outer barrel, and sealing materials can be added into the buckle to ensure that water flow cannot leak. This stoving wind channel structure adopts the interior outer tube structural design who has baffling board and annular groove and play water round hole, has changed the structure in traditional stoving wind channel and has mixed heat transfer's mode, keeps apart cold water and high temperature and humidity gas, has increased heat transfer area and difference in temperature, and cold and hot medium flows against the current, carries out hot convection and heat-conduction heat transfer, effectively improves heat exchange efficiency.

In this embodiment, high temperature and high humidity gas flows from bottom to top, forms throttling arrangement at the urceolus bottom through reducing the sectional area for certain cold water has been held to certain high memory in the urceolus bottom, reduces the velocity of flow of cold water, improves cold water and high temperature and high humidity gas's heat transfer time, guarantees high temperature and high humidity gas and at the effective heat transfer of urceolus bottom. Therefore, the high-temperature and high-humidity gas is greatly condensed and separated out within a certain distance from the bottom end of the outer cylinder, and flows in a bow shape between the baffle plates to exchange heat with condensed water on the outer wall of the inner cylinder, so that the condensation amount is further increased, and the problem of partial condensed water backflow air channel caused by a centrifugal fan is effectively solved; the condensed hot air enters the fan, then enters the inner barrel and the outer barrel of the washing and drying machine, and takes away water on wet clothes, and the wet air is continuously condensed in the whole closed circulating air duct system, so that the drying effect of the clothes is finally achieved.

In the embodiment, aiming at the problem that the clothes flocks are accumulated in the drying air channel, the filter screens are additionally arranged at the upper end and the lower end of the drying air channel to prevent the clothes flocks from being accumulated in the drying air channel, so that the influence on the heat exchange efficiency and the secondary pollution of the washed clothes are avoided; meanwhile, a throttling device is formed at the bottom end of the outer cylinder by reducing the sectional area, and water jet with certain initial speed can be generated under the action of pressure, so that the function of washing the clothes flock on the filter screen is achieved. The cold water passes through the filter screen and then is discharged out of the washing machine along the air duct together with the flushed flock through the drain pipe.

In this embodiment, the shape, number and placement position of the baffles can be adjusted properly in consideration of the drying air volume. Therefore, the shape of the baffle plate is determined according to the corresponding air quantity and the shape structure of the drying air duct.

In this embodiment, for guaranteeing structural strength, water yield and effectively covering the outer wall surface of the inner cylinder, the depth and radian of the annular groove and the diameter and number of the water outlet circular holes can be correspondingly adjusted according to specific working conditions.

In this embodiment, the upper filter screen can be removed appropriately according to the magnitude of the air volume.

In the embodiment, the drying duct outer cylinder has variable shapes, such as belt bending and the like.

The utility model also provides a washing machine, including the stoving wind channel structure, the stoving wind channel structure is foretell stoving wind channel structure.

Preferably, the washing machine further comprises: the heat exchange flow channel is communicated with the inner barrel; the heating part is used for heating the gas after heat exchange and arranged between the inner barrel and the drying air channel structure so as to send the gas heated by the heating part into the inner barrel.

In this embodiment, after the heat exchange between the high-temperature and high-humidity gas and the cooling liquid is completed, the temperature of the gas is reduced, so that the gas is heated by the heating part before entering the inner tub, thereby ensuring the drying temperature of the gas.

In this embodiment, the heating unit may be an electric heater, a heat pump heating device (system) or other heating devices (systems).

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stoving wind channel structure which characterized in that includes:

the heat exchange assembly comprises a heat exchange flow channel, the heat exchange flow channel is used for heat exchange between gas and cooling liquid, the heat exchange assembly further comprises a cooling liquid tank (22) used for feeding the cooling liquid, the cooling liquid tank (22) and the heat exchange flow channel are arranged at intervals, a water outlet hole (23) is formed in the wall of the cooling liquid tank (22), and the water outlet hole (23) is used for communicating the cooling liquid tank (22) and the heat exchange flow channel;

the cooling liquid tank (22) surrounds the heat exchange flow channel, the water outlet holes (23) are multiple, and the water outlet holes (23) are arranged at intervals along the extending direction of the cooling liquid tank (22).

2. The drying duct structure according to claim 1, wherein the cooling liquid groove (22) is an annular groove located outside the heat exchange flow channel.

3. The drying duct structure according to claim 1, wherein the heat exchange assembly includes:

the heat exchange flow channel is positioned inside a cavity of the first cylinder (20), the cooling liquid tank (22) is arranged on the first cylinder (20), and the cooling liquid tank (22) is positioned outside the cavity of the first cylinder (20);

wherein, a plurality of apopores (23) are arranged on the first cylinder (20) at intervals along the circumferential direction of the first cylinder (20).

4. The drying air duct structure according to claim 3, wherein the heat exchanging flow passage includes a first flow passage (11) for circulating the gas and a second flow passage (21) for circulating the cooling liquid, and the heat exchanging assembly further includes:

the second cylinder (10) penetrates through the first cylinder (20), the inner cavity of the second cylinder (10) comprises the first flow channel (11), and a second flow channel (21) is formed between the outer wall of the second cylinder (10) and the cavity wall of the first cylinder (20);

the cooling liquid groove (22) is communicated with the second flow channel (21) through the water outlet hole (23).

5. Drying duct structure according to claim 4, characterized in that said first cylinder (20) comprises:

a first barrel section (24), the first barrel section (24) and the second barrel (10) forming the second flow passage (21) therebetween;

a first connecting section (25), the first connecting section (25) being connected to an outer wall of the first cylinder section (24), the first connecting section (25) and the first cylinder section (24) forming the cooling bath (22) therebetween.

6. The drying duct structure according to claim 5, characterized in that the first cylinder section (24) is a circular tube, the cooling fluid bath (22) is an annular groove, and the first connecting section (25) has an L-shaped cross-section in the axial direction of the first cylinder section (24) such that the annular groove has a U-shaped cross-section in the axial direction of the first cylinder section (24).

7. Drying duct structure according to claim 5, characterized in that said second cylinder (10) comprises:

a second cylinder section (13), the second cylinder section (13) having the first flow passage (11), the second flow passage (21) being formed between the first cylinder section (24) and the second cylinder section (13);

wherein the outer wall of the second cylinder section (13) and the wall of the first cylinder section (24) are arranged at intervals so that the second flow channel (21) surrounds the first flow channel (11).

8. Drying duct structure according to claim 7, characterized in that the second cylinder (10) further comprises:

a second connection section (14), said second connection section (14) being connected to said second barrel section (13), said second connection section (14) having an exhaust chamber (141) for communicating with an inner barrel of a washing machine, said exhaust chamber (141) communicating with said first flow passage (11);

wherein the first connecting section (25) is connected to the second connecting section (14) at an end thereof adjacent to the second cylinder section (13).

9. The drying air duct structure according to claim 8, characterized in that the second connecting section (14) is provided with a first connecting portion (12), the first connecting section (25) is provided with a second connecting portion (26) adapted to the first connecting portion (12), and the first connecting portion (12) is connected to the second connecting portion (26).

10. The drying air duct structure according to claim 9, wherein the first connecting portion (12) is a protrusion, the second connecting portion (26) is a groove, and the first connecting portion (12) is clamped in the second connecting portion (26); or, the first connecting part (12) is a groove, the second connecting part (26) is a protrusion, and the second connecting part (26) is clamped in the first connecting part (12).

11. The drying duct structure according to claim 8, characterized in that an avoiding groove (142) is provided at a side of the second connecting section (14) close to the first cylinder section (24), and a groove wall of the avoiding groove (142) is spaced apart from the first cylinder section (24).

12. The drying duct structure according to any one of claims 4 to 11, characterized in that the drying duct structure further comprises:

a baffle plate (40), the baffle plate (40) disposed within the first flow channel (11).

13. The drying duct structure according to claim 12, wherein the baffle plate (40) is plural, and the baffle plates (40) are provided at intervals along the extending direction of the first flow path (11).

14. The drying air duct structure according to any one of claims 1 to 11, wherein at least a portion of the water outlet hole (23) is an expanded hole section, and the expanded hole section is gradually expanded in a direction extending from the heat exchange flow channel to the cooling liquid tank (22).

15. A washing machine comprising a drying duct structure, characterized in that the drying duct structure is the drying duct structure of any one of claims 1 to 14.

16. The washing machine as claimed in claim 15, further comprising:

the heat exchange flow channel is communicated with the inner barrel;

the heating part is used for heating the gas after heat exchange, and the heating part is arranged between the inner barrel and the drying air channel structure so as to send the gas heated by the heating part into the inner barrel.