Pedestal pan and drying and deodorizing device thereof

Abstract

The invention discloses a pedestal pan and a drying and deodorizing device thereof. The drying and deodorizing device comprises a support, a fixed pipe, a movable pipe, a heating unit, a fan unit, a deodorizing unit, a switching unit, a driving motor and a control panel. The movable pipe is telescopically sleeved in the fixed pipe, and the movable pipe and the fixed pipe are communicated to form an air duct; the heating unit is used for heating the air passing through the fixed pipe; the fan unit comprises a fan, an air inlet, an air outlet and an air inlet / outlet, the air inlet / outlet is communicated with the rear end opening of the fixed pipe, and the air inlet is communicated with outside air; the deodorization unit is communicated with an air outlet of the fan unit; the switching unit is used for controlling the air inlet and outlet to communicate with the air inlet or the air outlet in a switching mode. The driving motor drives the movable pipe to do front-back telescopic motion relative to the fixed pipe; during drying, the moving pipe extends out, the fan rotates forwards, the heating unit starts heating, and the air inlet and outlet communicates with the air inlet; during deodorization, the movable pipe extends out, the fan rotates reversely, and the air inlet and outlet are communicated with the air outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of bathrooms, in particular to a toilet and a drying and deodorizing device thereof. Background Art

[0002] Existing smart toilets generally feature body-cleaning, drying, and deodorizing functions. The drying function typically involves a separate drying duct with a heater installed within it. A drying fan draws in external air, heats it, and then delivers it to the body through the drying duct. Existing deodorizing functions typically involve a separate deodorizing duct with a deodorizing unit installed within it. A deodorizing fan draws odor from the bowl, deodorizes it, and then delivers it to the toilet's exterior through the duct, achieving the deodorizing effect.

[0003] The drying and deodorizing functions of existing smart toilets are independently configured, requiring separate drying and deodorizing channels, drying and deodorizing fans, which occupy a large volume and are more expensive to configure.

[0004] In view of this, how to reduce the volume and cost occupied by the drying device and the deodorizing device is a technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention proposes a drying and deodorizing device for a toilet, which integrates a drying device and a deodorizing device. The two devices share the same channel and the same fan, have a simple and compact structure, lower cost, and good deodorizing effect.

[0006] The technical solution adopted in the present invention is: A drying and deodorizing device for a toilet, comprising: A bracket, used for fixing to the base of the toilet; a fixed tube, fixed on the bracket; A movable tube is telescopically arranged inside the fixed tube, wherein the inner cavity of the movable tube and the inner cavity of the fixed tube form an air duct; a heating unit, disposed in the inner cavity of the fixed tube to heat the air passing through the fixed tube; a fan unit, provided on the bracket, comprising a fan, the fan unit having an air inlet, an air outlet, and an air inlet and outlet, the air inlet and outlet being connected to the rear end opening of the fixed tube, and the air inlet being connected to the outside air; a deodorizing unit, disposed on the bracket and connected to the air outlet of the fan unit; A switching unit, configured to control the air inlet and outlet to switch between being connected to the air inlet or being connected to the air outlet; A drive motor is provided on the bracket and drives the movable tube to move forward and backward relative to the fixed tube; A control panel, used for controlling the heating unit, the fan unit, the switching unit and the drive motor; During drying, the control panel controls the driving motor to extend the movable tube, controls the fan of the fan unit to rotate forward, controls the heating unit to start heating, and controls the switching unit to connect the air inlet and outlet with the air inlet; During deodorization, the control panel controls the driving motor to extend the movable tube, controls the fan of the fan unit to reverse, and controls the switching unit to connect the air inlet and outlet with the air outlet.

[0007] In a preferred or optional embodiment, the switching unit includes a first control valve and a second control valve, the first control valve controls the opening and closing of the air inlet, and the second control valve controls the opening and closing of the air outlet. During the drying process, the first control valve opens the air inlet and the second control valve closes the air outlet; during the deodorization process, the first control valve closes the air inlet and the second control valve opens the air outlet.

[0008] In a preferred or optional embodiment, the first control valve is an electrically controlled valve, and the second control valve is a mechanical normally closed one-way valve. The normally closed one-way valve allows air to flow out of the air outlet from the air inlet and outlet in one direction in the deodorization state. The electrically controlled valve includes an electromagnetic drive component and a mechanical normally open one-way valve. During drying, the mechanical normally open one-way valve remains open. During deodorization, the control panel controls the electromagnetic drive component to close the normally open one-way valve.

[0009] In a preferred or optional embodiment, a deodorizing chamber is provided on the bracket, the deodorizing unit is detachably mounted in the deodorizing chamber, the inlet of the deodorizing chamber is connected to the air outlet, and the outlet of the deodorizing chamber is connected to the outside air.

[0010] In a preferred or optional embodiment, the deodorizing chamber is provided below the fan unit, a driving chamber is provided on the bracket in front of the deodorizing chamber, and the driving motor is provided in the driving chamber.

[0011] In a preferred or optional embodiment, the fan unit also includes a fan housing for accommodating the fan, the air inlet is arranged on the top wall of the fan housing, the air outlet is arranged on the bottom wall of the fan housing, and the air inlet and outlet are arranged on the side walls of the fan housing.

[0012] In a preferred or optional embodiment, it further includes a steel belt and a roller, the steel belt is wound around the roller, the free end of the steel belt is fixedly connected to the movable tube, and the driving motor drives the rolling rotation to drive the steel belt to unfold from the roller or wrap around the roller, thereby driving the movable tube to move forward and backward relative to the fixed tube.

[0013] In a preferred or optional embodiment, a connecting member is further included, which is provided with a accommodating groove, a first elastic clip and a second elastic clip. A clip groove is provided on the outer side wall of the rear end of the fixing tube, the first elastic clip is clipped into the clip groove, and the second elastic clip is clipped into the fan unit to limit the fan unit in the accommodating groove.

[0014] In a preferred or optional embodiment, the deodorizing unit is made of pure diatomaceous earth or activated carbon; or, the deodorizing unit is made of water spray; the deodorizing unit controls the length of the movable tube extended in the drying state to be greater than the length extended in the deodorizing state; the front end of the movable tube is closed and the rear end is open, and a ventilation hole is provided on the top wall of the movable tube near the front end.

[0015] In addition, the present invention also provides a toilet, comprising a toilet seat body with a toilet bowl and a base arranged on the toilet seat body, and also comprising a drying and deodorizing device for the toilet as described in any one of the above items, wherein the bracket and the control panel are respectively mounted on the base.

[0016] From the above description of the present invention, it can be seen that the present invention has the following beneficial effects: The present invention provides a toilet drying and deodorizing device, wherein the fan unit is configured to have an air inlet, an air outlet, and an air inlet and outlet, and the air inlet and outlet are connected to the rear end opening of the fixed pipe, the air inlet is connected to the outside air, and the air outlet is connected to the deodorizing unit. During drying, a control panel controls the drive motor to extend the movable pipe, controls the fan of the fan unit to rotate forward, and controls the heating unit to start heating, thereby drawing in outside air and sequentially passing it through the fixed pipe and the movable pipe to the human body. The air is heated in the fixed pipe, achieving the function of warm air drying the human body. During deodorizing, the control panel controls the drive motor to extend the movable pipe, controls the fan of the fan unit to rotate backward, and controls the switching unit to connect the air inlet and outlet, thereby drawing in odor from the toilet bowl and sequentially passing it through the movable pipe and the fixed pipe to the deodorizing unit. The odor is then deodorized by the deodorizing unit and discharged to the outside air, achieving the deodorizing function. In this way, the drying device and the deodorizing device are integrated, and both share the same channel and the same fan, resulting in a simple, compact structure and lower cost. Moreover, when deodorizing, the movable tube is controlled to extend so that the movable tube can be closer to the middle of the toilet bowl, so that the odor can be sucked more timely and the deodorizing effect is better.

[0017] In addition, the drying and deodorizing device of the toilet of the present invention is further provided with a switching unit, which is used to control the switching of the air inlet and outlet to be connected to the air inlet or to be connected to the air outlet. During drying, the control panel controls the switching unit to connect the air inlet and outlet with the air inlet, and during deodorizing, the control panel controls the switching unit to connect the air inlet and outlet with the air outlet. The benefits of such a setting include two aspects: on the one hand, when the deodorizing unit adopts an adsorption medium to perform adsorption deodorization, in the drying state, the outside air will not enter the fan unit through the deodorizing unit and the air outlet, causing some impurities or moisture in the outside air to adhere to the adsorption medium of the deodorizing unit, affecting the use effect or service life of the adsorption medium of the deodorizing unit; on the other hand, in the deodorizing state, the odor in the toilet bowl enters the fan unit through the air inlet and outlet, and will all flow through the air outlet to the deodorizing unit for deodorization and then be discharged to the outside. The odor will not be directly discharged through the air inlet and cannot be deodorized by the deodorizing unit, and the deodorizing effect is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] in: Figure 1 is an axial view of a drying and deodorizing device for a toilet according to an embodiment of the present invention; Figure 2 This is an exploded view of a toilet drying and deodorizing device according to an embodiment of the present invention; Figure 3 is a cross-sectional view of a toilet drying and deodorizing device in an initial state according to an embodiment of the present invention; Figure 4 is a cross-sectional view of a toilet drying and deodorizing device in a drying state according to an embodiment of the present invention; Figure 5 is a cross-sectional view of a toilet drying and deodorizing device in a deodorizing state according to an embodiment of the present invention; Figure 6 is an axial side view of a fixed tube according to an embodiment of the present invention; Figure 7 FIG1 is one of the axial side views (from a top-down perspective) of a moving tube according to an embodiment of the present invention; Figure 8 This is the second axial side view (from bottom to top) of the moving tube according to one embodiment of the present invention.

[0020] The accompanying drawings in the figure are: 10- bracket; 11- deodorization chamber; 12- driving chamber; 20-fixing tube; 21-slot; 30-moving pipe; 31-vent; 32-drainage outlet; 40-heating unit; 50-fan unit; 51-fan; 52-fan housing; 521-air inlet; 522-air outlet; 523-air inlet and outlet; 60-deodorization unit; 70 - switching unit; 71 - first control valve; 711 - electromagnetic drive element; 712 - normally open one-way valve; 7121 - valve plate; 7122 - compression spring; 72 - second control valve (normally closed one-way valve); 80-drive motor; 91- steel belt; 92- roller; 100 - connecting piece; 101 - receiving groove; 102 - first elastic buckle; 103 - second elastic buckle. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See Figures 1 to 8 A preferred embodiment of the present invention is a toilet drying and deodorizing device, comprising a bracket 10, a fixed pipe 20, a movable pipe 30, a heating unit 40, a fan unit 50, a deodorizing unit 60, a switching unit 70, a drive motor 80, and a control panel. Among them: The bracket 10 is used to be fixed on the base of the toilet (not shown); A fixed tube 20 is fixed on the bracket 10; The movable tube 30 is telescopically mounted inside the fixed tube 20, and the inner cavities of the movable tube 30 and the fixed tube 20 form an air duct; The heating unit 40 is disposed in the inner cavity of the fixed tube 20 to heat the air passing through the fixed tube 20 ; the heating unit 40 may adopt an existing known structure, for example, a mica heating plate or a heating wire as a heating device.

[0023] The fan unit 50 is provided on the bracket 10 and includes a fan 51. The fan unit 50 has an air inlet 521, an air outlet 522, and an air inlet and outlet 523. The air inlet and outlet 523 are connected to the rear end opening of the fixed tube 20, and the air inlet 521 is connected to the outside air. The deodorizing unit 60 is provided on the bracket 10 and is connected to the air outlet 522 of the fan unit 50; A switching unit 70 is used to control the air inlet and outlet 523 to switch between communicating with the air inlet 521 or communicating with the air outlet 522; The drive motor 80 is provided on the bracket 10 and drives the movable tube 30 to move forward and backward relative to the fixed tube 20. The drive motor 80 can be a stepping motor. A control panel (not shown) for controlling the heating unit 40 , the fan unit 50 , the switching unit 70 and the drive motor 80 ; During drying, the control panel controls the drive motor 80 to extend the movable tube 30, controls the fan 51 of the fan unit 50 to rotate forward, controls the heating unit 40 to start heating, and controls the switching unit 70 to connect the air inlet and outlet 523 with the air inlet 521, thereby drawing in outside air and delivering it to the human body through the fixed tube 20 and the movable tube 30 in sequence. The air is heated in the fixed tube 20, achieving the function of drying the human body with warm air. During deodorization, the control panel controls the driving motor 80 to extend the movable tube 30, controls the fan 51 of the fan unit 50 to reverse, and controls the switching unit 70 to connect the air inlet and outlet 523 with the air outlet 522, thereby drawing the odor in the toilet bowl into the movable tube 30 and the fixed tube 20 and transporting it to the deodorization unit 60 in turn, and then deodorizing it through the deodorization unit 60 and then discharging it into the outside air, thereby realizing the deodorization function.

[0024] It should be noted that the forward and reverse directions of the fan 51 of the present invention are opposite, and the forward rotation may be clockwise and the reverse rotation may be counterclockwise, or the forward rotation may be counterclockwise and the reverse rotation may be clockwise.

[0025] This solution integrates the toilet's drying and deodorizing devices, sharing the same channel and fan. This results in a simple, compact structure and lower costs. Furthermore, during deodorization, the movable tube 30 is controlled to extend closer to the center of the toilet bowl, allowing for more timely extraction of odors and achieving improved deodorization effectiveness.

[0026] In this embodiment, the switching unit 70 includes a first control valve 71 and a second control valve 72. The first control valve 71 controls the opening and closing of the air inlet 521, and the second control valve 72 controls the opening and closing of the air outlet 522. During drying, the first control valve 71 opens the air inlet 521 and the second control valve 72 closes the air outlet 522; during deodorization, the first control valve 71 closes the air inlet 521 and the second control valve 72 opens the air outlet 522.

[0027] Specifically, the first control valve 71 is an electrically controlled valve, and the second control valve 72 is a mechanical normally closed one-way valve 72. In the deodorizing state, the normally closed one-way valve 72 allows air to flow out of the air outlet 522 from the air inlet and outlet 523 in one direction. The normally closed one-way valve 72 can adopt an existing known structure, such as a common duckbill valve structure. The electrically controlled valve includes an electromagnetic drive component 711 and a mechanical normally open one-way valve 712. During drying, the mechanical normally open one-way valve 712 remains in an open state. During deodorization, the control panel controls the electromagnetic drive component 711 to close the normally open one-way valve 712. The electromagnetic drive component 711 includes an electromagnetic control part and a retractable drive rod. When the control panel supplies power to the electromagnetic control part, the drive rod extends. When the control panel cuts off power to the electromagnetic control part, the drive rod retracts.

[0028] More specifically, the normally open one-way valve 712 of the first control valve 71 includes a valve plate 7121 and a compression spring 7122. The valve plate 7121 cooperates with the air inlet 521, and the compression spring 7122 presses between the valve plate 7121 and the fan housing 52. The compression spring 7122 provides an elastic force to drive the valve plate 7121 away from the air inlet 521; during deodorization, the electromagnetic drive component 711 drives the valve plate 7121 to overcome the elastic force of the compression spring 7122 to close the air inlet 521.

[0029] In this embodiment, the bracket 10 is provided with a deodorizing chamber 11, and the deodorizing unit 60 is detachably mounted within the deodorizing chamber 11. The inlet of the deodorizing chamber 11 is connected to the air outlet 522, and the outlet of the deodorizing chamber 11 is connected to the outside air. The detachable design of the deodorizing unit 60 allows for replacement of the deodorizing unit 60.

[0030] In this embodiment, the deodorizing chamber 11 is provided below the fan unit 50, and a driving chamber 12 is provided on the bracket 10 in front of the deodorizing chamber 11, and the driving motor 80 is provided in the driving chamber 12. This design makes the layout more reasonable and can make the overall structure more compact. In this embodiment, the fan unit 50 also includes a fan housing 52 for accommodating the fan 51, the air inlet 521 is arranged on the top wall of the fan housing 52, the air outlet 522 is arranged on the bottom wall of the fan housing 52, and the air inlet and outlet 523 are arranged on the side wall of the fan housing 52.

[0031] In this embodiment, a steel belt 91 and a roller 92 are also included. The steel belt 91 is wound around the roller 92. The free end of the steel belt 91 is fixedly connected to the movable tube 30. The drive motor 80 drives the rolling rotation to drive the steel belt 91 to unfold from the roller 92 or wrap around the roller 92, thereby driving the movable tube 30 to move forward and backward relative to the fixed tube 20.

[0032] In this embodiment, a connecting member 100 is also included. The connecting member 100 is provided with a accommodating groove 110, a first elastic clip 102 and a second elastic clip 103. A clip groove 21 is provided on the outer side wall of the rear end of the fixed tube 20. The first elastic clip 102 is clipped into the clip groove 21, and the second elastic clip 103 is clipped into the fan unit 50 to limit the fan unit 50 in the accommodating groove 110.

[0033] The deodorizing unit 60 may adopt an existing known structure, for example, it may be an adsorption deodorizing method or a water spray deodorizing method. This embodiment specifically adopts an adsorption deodorizing method, and the deodorizing medium of the deodorizing unit 60 may be made of diatomaceous earth or activated carbon.

[0034] In this embodiment, see Figure 4 and Figure 5 The deodorizing unit 60 controls the length of the movable tube 30 to be extended in the drying state to be greater than the length extended in the deodorizing state. In the deodorizing state, the length of the movable tube 30 should be controlled so as not to contact the waste discharged by the user.

[0035] In this embodiment, the front end of the mobile tube 30 is closed and the rear end is open. A vent 31 is provided on the top wall of the mobile tube 30 near the front end. A drain 32 is also provided on the bottom wall of the front end of the mobile tube 30. This drain 32 drains accumulated water from the mobile tube 30, preventing warm air from blowing onto the user's buttocks when the drying function is activated, resulting in a poor user experience.

[0036] The specific working process of the drying and deodorizing device of the toilet in this embodiment is briefly described as follows: See also Figure 3 , this is the initial state, the control board does not control to turn on the heating unit 40, the fan unit 50, the electromagnetic drive member 711 and the drive motor 80; See also Figure 4 At this time, the drying state is reached. The control panel controls the drive motor 80 to extend the movable tube 30 relative to the fixed tube 20 to approach the buttocks of the human body, controls the fan 51 of the fan unit 50 to rotate forward, controls the heating unit 40 to start heating, and controls the electromagnetic drive member 711 of the switching unit 70 to remain in the retracted state (i.e., the air inlet 521 remains open), so that the air inlet and outlet 523 are connected to the air inlet 521 (at this time, the second control valve 72 closes the air outlet 522). Under the suction action of the fan 51, the outside air is drawn in only through the air inlet 521, and is sequentially delivered to the buttocks of the human body through the air inlet and outlet 523, the fixed tube 20, and the movable tube 30. The air is heated by the heating unit 40 in the fixed tube 20, thereby achieving the function of drying the buttocks of the human body with warm air. Figure 4 The arrows in the figure indicate the flow path of the air; See also Figure 5At this time, it is in the deodorizing state. During deodorizing, the control panel controls the drive motor 80 to extend the movable tube 30 a short distance, thereby getting closer to the waste in the toilet bowl to a certain extent; controls the fan 51 of the fan unit 50 to reverse; and controls the electromagnetic drive member 711 of the switching unit 70 to extend, thereby driving the valve plate 7121 to overcome the elastic force of the compression spring 7122 and close the air inlet 521, so that the air inlet and outlet 523 are disconnected from the air inlet 521. Under the suction action of the fan 51, the odor in the toilet bowl is sucked into the vent 31 of the movable tube 30, and is sequentially transported through the movable tube 30, the fixed tube 20, the air inlet and outlet 523, and the air outlet 522 to the deodorizing unit 60. After being deodorized by the deodorizing unit 60, it is discharged into the outside air, thus achieving the deodorizing function. Figure 5 The arrows in the figure indicate the flow path of the odor.

[0037] The present invention also provides a toilet comprising a toilet seat (not shown) having a toilet bowl and a base (not shown) mounted on the toilet seat, and further comprising a toilet drying and deodorizing device as described above, wherein a bracket 10 and a control panel are mounted on the base. It is understood that the control panel can be independent of the main control panel of the toilet main unit, or the main control panel of the toilet main unit can be directly used as the control panel, thereby eliminating the need for a separate control panel.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0043] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A drying and deodorizing device for a toilet, characterized in that: include: A bracket, used for fixing to the base of the toilet; a fixed tube, fixed on the bracket; A movable tube is telescopically arranged inside the fixed tube, wherein the inner cavity of the movable tube and the inner cavity of the fixed tube form an air duct; a heating unit, disposed in the inner cavity of the fixed tube to heat the air passing through the fixed tube; a fan unit, provided on the bracket, comprising a fan, the fan unit having an air inlet, an air outlet, and an air inlet and outlet, the air inlet and outlet being connected to the rear end opening of the fixed tube, and the air inlet being connected to the outside air; a deodorizing unit, disposed on the bracket and connected to the air outlet of the fan unit; A switching unit, configured to control the air inlet and outlet to switch between being connected to the air inlet or being connected to the air outlet; A drive motor is provided on the bracket and drives the movable tube to move forward and backward relative to the fixed tube; A control panel, used for controlling the heating unit, the fan unit, the switching unit and the drive motor; During drying, the control panel controls the driving motor to extend the movable tube, controls the fan of the fan unit to rotate forward, controls the heating unit to start heating, and controls the switching unit to connect the air inlet and outlet with the air inlet; During deodorization, the control panel controls the driving motor to extend the movable tube, controls the fan of the fan unit to reverse, and controls the switching unit to connect the air inlet and outlet with the air outlet.

2. The drying and deodorizing device for a toilet according to claim 1, characterized in that: The switching unit includes a first control valve and a second control valve. The first control valve controls the opening and closing of the air inlet, and the second control valve controls the opening and closing of the air outlet. During the drying process, the first control valve opens the air inlet and the second control valve closes the air outlet; during the deodorization process, the first control valve closes the air inlet and the second control valve opens the air outlet.

3. The drying and deodorizing device for a toilet according to claim 2, characterized in that: The first control valve is an electrically controlled valve, and the second control valve is a mechanical normally closed one-way valve. The normally closed one-way valve allows air to flow out of the air outlet from the air inlet and outlet in one direction in the deodorization state. The electrically controlled valve includes an electromagnetic drive component and a mechanical normally open one-way valve. During drying, the mechanical normally open one-way valve remains open. During deodorization, the control panel controls the electromagnetic drive component to close the normally open one-way valve.

4. The drying and deodorizing device for a toilet according to claim 1, characterized in that: The bracket is provided with a deodorizing cavity, the deodorizing unit is detachably mounted in the deodorizing cavity, the inlet of the deodorizing cavity is communicated with the air outlet, and the outlet of the deodorizing cavity is communicated with the outside air.

5. The drying and deodorizing device for a toilet according to claim 4, characterized in that: The deodorizing chamber is arranged below the fan unit, a driving chamber is arranged on the bracket in front of the deodorizing chamber, and the driving motor is arranged in the driving chamber.

6. The drying and deodorizing device for a toilet according to claim 1, characterized in that: The fan unit also includes a fan housing for accommodating the fan, the air inlet is arranged on the top wall of the fan housing, the air outlet is arranged on the bottom wall of the fan housing, and the air inlet and outlet are arranged on the side walls of the fan housing.

7. The drying and deodorizing device for a toilet according to claim 1, characterized in that: It also includes a steel belt and a roller, the steel belt is wound around the roller, the free end of the steel belt is fixedly connected to the movable tube, and the driving motor drives the rolling rotation to drive the steel belt to unfold from the roller or wind around the roller, thereby driving the movable tube to move forward and backward relative to the fixed tube.

8. The drying and deodorizing device for a toilet according to claim 1, characterized in that: It also includes a connecting member, which is provided with a accommodating groove, a first elastic clip and a second elastic clip. A clip groove is provided on the outer side wall of the rear end of the fixing tube. The first elastic clip is clipped into the clip groove, and the second elastic clip is clipped into the fan unit to limit the fan unit in the accommodating groove.

9. The drying and deodorizing device for a toilet according to claim 1, characterized in that: The deodorizing unit is made of pure diatomaceous earth or activated carbon; alternatively, the deodorizing unit is made of water spray; the deodorizing unit controls the length of the movable tube extended in the drying state to be greater than the length extended in the deodorizing state; the front end of the movable tube is closed and the rear end is open, and a ventilation hole is provided on the top wall of the movable tube near the front end.

10. A toilet comprising a toilet seat having a toilet bowl and a base provided on the toilet seat, characterized in that: It also includes the drying and deodorizing device for the toilet according to any one of claims 1 to 9, and the bracket and the control panel are respectively installed on the base.

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