Air exhaust line non-return structure

Abstract

The utility model provides an exhaust line non-return structure, and belongs to the technical field of exhaust line non-return. Comprising a mounting base, a fan and a non-return channel, the fan and the non-return channel are fixed to the two ends of the mounting base, a fastening part is arranged at the bottom end of the non-return channel, a sealing plate is embedded in the non-return channel, and a servo motor used for driving the sealing plate to rotate is fixed to the outer wall of the non-return channel. A positioning part abutting against the top end of the sealing plate is arranged on one side of the inner wall of the fastening part in a protruding mode, a connecting groove is formed in the bottom end of the fastening part, an exhaust channel is fixed to the bottom end of the fastening part in a sealed mode, and sealing pieces are embedded in the two ends of the sealing plate. The rubber plates in the mounting grooves in the two ends of the sealing plate are tightly connected with the inner wall of the sealing part, so that the non-return channel is in a sealed state, and the situation that foam leaks from the exhaust channel to affect normal work of a fan when the washing and drying machine washes clothes is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust line backflow prevention, in particular to an exhaust line backflow prevention structure. Background Art

[0002] The drying methods of the washer-dryer are divided into two types: direct exhaust and condensation. The working principle of the direct exhaust is that after the air is heated by the heater, it heats the clothes, becomes hot and humid air and is discharged to the outside, forming a cycle, continuously discharging the moisture from the clothes to achieve the purpose of drying the clothes; the working principle of the condensation type is that after the air is heated by the heater, it enters the drum to heat the clothes, and the drum becomes hot and humid air, and then passes through the condensation system to condense the moisture into water and collect it in the water storage box, forming a cycle, continuously discharging the moisture from the clothes to achieve the purpose of drying the clothes. An exhaust line for conveying hot air is provided on the washer-dryer.

[0003] The patent with application number 201921299746.1 discloses a duct type drying device, including a shell, an air duct and a fan, characterized in that: the shell includes an upper shell and a lower shell, a cavity for accommodating the air duct is formed between the upper shell and the lower shell, the fan is installed at one end of the shell and connected to the cavity, one side of the air duct is provided with an air duct drive assembly for pushing the air duct to retract or extend out of the shell, the air duct is a hollow structure with one end open and the other end closed, and a single or multiple guide grooves connected to the open end are provided on the upper side of the closed end of the air duct.

[0004] The above technical solution transports hot air through the air duct. When applied to a washer-dryer, since the exhaust line is connected to the inside of the washer-dryer, the foam generated by washing clothes will flow back into the exhaust line, causing the heating parts to short-circuit. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an exhaust circuit anti-return structure to solve the existing problem that, because the exhaust circuit is connected to the inside of the washer-dryer, the foam generated by washing clothes will flow back into the exhaust circuit, thereby causing a short circuit in the heating parts.

[0006] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a non-return structure for an exhaust line, comprising a mounting seat and a fan and a non-return channel fixed at both ends of the mounting seat, a fastening portion is provided at the bottom end of the non-return channel, and a sealing plate is embedded in the non-return channel, wherein a private service motor for driving the sealing plate to rotate is fixed to the outer wall of the non-return channel, a positioning portion abutting against the top of the sealing plate is protruded on one side of the inner wall of the fastening portion, and a connecting groove is provided at the bottom end of the fastening portion, wherein the exhaust channel is sealed and fixed at the bottom end of the fastening portion, and sealing members are embedded at both ends of the sealing plate.

[0007] Optionally, an air outlet is provided at the top of the mounting seat, and a sealing ring is fixedly sleeved on the air outlet.

[0008] Optionally, the fan is fixed at the top of the air outlet, and an air outlet portion is protruding from the side wall of the fan.

[0009] Optionally, fastening seats are installed at both ends of the private service motor, and the two fastening seats are fixedly connected to the side walls of the non-return channel.

[0010] Optionally, the top end surface of the exhaust passage is protruded and fixed with connecting parts twice, and the connecting parts are inserted into the connecting grooves.

[0011] Optionally, a sealing gasket is fixedly connected to the top end of the connecting portion, and the sealing gasket is tightly connected to the inner wall of the connecting groove.

[0012] Optionally, both ends of the sealing plate are provided with mounting grooves, the sealing member is a rubber plate embedded and fixed in the mounting groove, and the two rubber plates are tightly connected to the side walls of the fastening portion.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, a mounting seat and an exhaust channel are respectively fixed at both ends of the non-return channel, a sealing plate is rotatably arranged at the bottom end of the non-return channel, and a private service motor is fixed to the outer wall of the non-return channel, a fastening part is fixed to the bottom end of the non-return channel, and the exhaust channel is installed at the bottom end of the fastening part through the connecting part. The private service motor drives the sealing plate to rotate during rotation, and one end of the sealing plate abuts against the positioning part during rotation, and the rubber plates in the mounting grooves at both ends of the sealing plate are tightly connected with the inner wall of the sealing part, so that the non-return channel is in a sealed state, thereby avoiding the situation where foam leaks from the exhaust channel when the washing machine is washing clothes and affects the normal operation of the fan; at the same time, when extracting steam in the washing machine, the private service motor drives the sealing plate to rotate to a vertical state, so that the fan extracts the steam in the washing machine through the exhaust channel, thereby improving the suction effect of the exhaust line of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0016] Figure 1 It is a three-dimensional structural diagram of the exhaust line anti-return structure;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting base;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the anti-reverse channel;

[0019] Figure 4 for Figure 3 Schematic diagram of the partially enlarged structure.

[0020] [Reference Signs]

[0021] 1. Mounting seat; 2. Fan; 3. Private service motor; 4. Exhaust duct; 5. Sealing ring; 6. Check channel; 7. Fastening seat; 8. Air outlet; 9. Connecting part; 10. Sealing plate; 11. Sealing pad; 12. Mounting groove; 13. Rubber plate; 14. Connecting groove; 15. Fastening part; 16. Positioning part.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0023] The following is a detailed description of an exhaust line anti-return structure provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0025] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0026] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0027] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0028] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an exhaust line anti-return structure, including a mounting base 1 and a fan 2 and an anti-return channel 6 fixed at both ends of the mounting base 1, a fastening portion 15 is provided at the bottom end of the anti-return channel 6, and a sealing plate 10 is embedded in the anti-return channel 6, wherein a private service motor 3 for driving the sealing plate 10 to rotate is fixed to the outer wall of the anti-return channel 6, a positioning portion 16 abutting against the top of the sealing plate 10 is protruded on one side of the inner wall of the fastening portion 15, and a connecting groove 14 is provided at the bottom end of the fastening portion 15, wherein The exhaust passage 4 is sealed and fixed to the bottom end of the fastening portion 15, and seals are embedded at both ends of the sealing plate 10. The bottom end of the non-return channel 6 is fixed with a fastening portion 15, and the exhaust passage 4 is installed at the bottom end of the fastening portion 15 through the connecting portion 9. The private service motor 3 drives the rubber plate 13 to rotate during rotation, and one end of the sealing plate 10 abuts against the positioning portion 16 during rotation, and the rubber plates 13 in the mounting grooves 12 at both ends of the sealing plate 10 are tightly connected to the inner wall of the sealing portion, so that the non-return channel 6 is in a sealed state.

[0029] An air outlet 8 is provided at the top of the mounting seat 1, a sealing ring 5 is fixedly sleeved on the air outlet 8, the fan 2 is fixed at the top of the air outlet 8, and an air outlet portion is protruding from the side wall of the fan 2, fastening seats 7 are installed at both ends of the private service motor 3, and the two fastening seats 7 are fixedly connected to the side walls of the non-return channel 6. When the steam in the washing and drying machine is extracted, the private service motor 3 drives the sealing plate 10 to rotate to a vertical state, so that the fan 2 extracts the steam in the washing and drying machine through the exhaust channel 4, thereby improving the suction effect of the exhaust line of the washing and drying machine.

[0030] like Figure 3 and Figure 4 As shown, the top surface of the exhaust channel 4 is protruded and fixed with connecting parts 9 twice, and the connecting parts 9 are inserted in the connecting groove 14. The top of the connecting part 9 is fixedly connected with a sealing gasket 11, and the sealing gasket 11 is tightly connected to the inner wall of the connecting groove 14. Both ends of the sealing plate 10 are provided with mounting grooves 12. The sealing member is a rubber plate 13 embedded and fixed in the mounting groove 12. The two rubber plates 13 are tightly connected to the side walls of the fastening part 15. The mounting seat 1 and the exhaust channel 4 are respectively fixed at both ends of the non-return channel 6. A sealing plate 10 is rotatably provided at the bottom end of the reverse channel 6, and a private service motor 3 is fixed to the outer wall of the non-return channel 6, and a fastening portion 15 is fixed to the bottom end of the non-return channel 6. The bottom end of the fastening portion 15 is installed with an exhaust channel 4 through a connecting portion 9. The private service motor 3 drives the sealing plate 10 to rotate during rotation, and one end of the sealing plate 10 abuts against the positioning portion 16 during rotation, and the sealing plates 10 in the mounting grooves 12 at both ends of the sealing plate 10 are tightly connected to the inner wall of the sealing portion, so that the non-return channel 6 is in a sealed state.

[0031] The working principle provided by the utility model is that when the washing and drying machine is in use, a sealing plate 10 is rotatably provided at the bottom end of the non-return channel 6, and a private service motor 3 is fixed to the outer wall of the non-return channel 6, and a fastening part 15 is fixed to the bottom end of the non-return channel 6, and an exhaust channel 4 is installed at the bottom end of the fastening part 15 through a connecting part 9, and the private service motor 3 drives the sealing plate 10 to rotate during the rotation process, and one end of the sealing plate 10 abuts against the positioning part 16 during the rotation process, and the rubber plates 13 in the mounting grooves 12 at both ends of the sealing plate 10 are tightly connected with the inner wall of the sealing part, so that the non-return channel 6 is in a sealed state, avoiding the situation that foam leaks from the exhaust channel 4 when the washing and drying machine is washing clothes and affecting the normal operation of the fan 2, and when drying clothes, the private service motor 3 drives the sealing plate 10 to rotate to a vertical state, so that the fan 2 extracts the steam in the washing and drying machine through the exhaust channel 4, thereby improving the suction effect of the exhaust line of the washing and drying machine.

[0032] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A non-return structure for exhaust lines, characterized in that: The invention comprises a mounting seat (1), and a fan (2) and a non-return channel (6) fixed at both ends of the mounting seat (1), wherein a fastening portion (15) is provided at the bottom end of the non-return channel (6), and a sealing plate (10) is embedded in the non-return channel (6), wherein a servo motor (3) for driving the sealing plate (10) to rotate is fixed to the outer wall of the non-return channel (6), a positioning portion (16) for abutting against the top end of the sealing plate (10) is protruding from one side of the inner wall of the fastening portion (15), and a connecting groove (14) is provided at the bottom end of the fastening portion (15), wherein an exhaust channel (4) is sealed and fixed at the bottom end of the fastening portion (15), and sealing members are embedded at both ends of the sealing plate (10).

2. The exhaust line anti-return structure according to claim 1, characterized in that: An air outlet (8) is provided at the top of the mounting seat (1), and a sealing ring (5) is fixedly sleeved on the air outlet (8).

3. The exhaust line anti-return structure according to claim 2, characterized in that: The fan (2) is fixed at the top end of the air outlet (8), and an air outlet portion is protruding from the side wall of the fan (2).

4. The exhaust line anti-return structure according to claim 1, characterized in that: Both ends of the servo motor (3) are provided with fastening seats (7), and both fastening seats (7) are fixedly connected to the side walls of the non-return channel (6).

5. The exhaust line anti-return structure according to claim 1, characterized in that: Connecting portions (9) are protruding and fixed on both sides of the top end surface of the exhaust passage (4), and the connecting portions (9) are inserted into the connecting grooves (14).

6. The exhaust line anti-return structure according to claim 5, characterized in that: A sealing gasket (11) is fixedly connected to the top end of the connecting portion (9), and the sealing gasket (11) is tightly connected to the inner wall of the connecting groove (14).

7. The exhaust line anti-return structure according to claim 1, characterized in that: Both ends of the sealing plate (10) are provided with mounting grooves (12); the sealing member is a rubber plate (13) embedded and fixed in the mounting groove (12); and the two rubber plates (13) are tightly connected to the side walls of the fastening portion (15).

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