Dish-washing machine air path device and dish-washing machine

Abstract

The utility model discloses a dish-washing machine wind path device which comprises a valve assembly and a condensation air duct, the valve assembly comprises a base and a cover plate, the cover plate and the base are matched to form a valve cavity, the condensation air duct is communicated with the valve cavity, an air outlet is formed in the base, and the valve cavity is communicated with the condensation air duct. A valve air duct from the condensation air duct to the air outlet is arranged in the valve cavity, the valve assembly further comprises a valve plate mechanism and a motor, the valve plate mechanism rotatably closes or opens the valve air duct, the motor provides power for the valve plate mechanism, and an output shaft of the motor is connected with the valve plate mechanism. The valve is simple in structure, and compared with an electromagnetic valve driving valve, the valve is higher in stability and durability.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to an air duct device and a dishwasher for a dishwasher. Background Art

[0002] A dishwasher is a household appliance for automatically cleaning tableware such as bowls, chopsticks, plates, dishes, knives and forks. At present, the main function of dishwashers on the market is the single function of washing tableware. The washed tableware needs to be taken out of the dishwasher in time for storage, which brings inconvenience to consumers. In order to meet the increasing demand of consumers for the quality of life, some newly developed dishwashers on the market not only have the function of washing, but also add the functions of hot air drying and long-term storage. In this way, after the tableware is washed, it can be dried through the hot air system and can be stored in the dishwasher for a long time, and then taken out for use when needed, which brings convenience to consumers.

[0003] For hot air drying and long-term storage here, generally there will be an air duct system. The air duct system includes air inlet and air outlet, and a control valve is also required during the process. Generally, the control valve will be installed at the air outlet position. Because during the washing process, the water in the barrel needs to be heated, in order to avoid heat dissipation, during the washing process, the air outlet needs to be closed by the control valve. After the washing is completed and the drying stage is entered, the air outlet valve needs to be opened to take away the water vapor of the tableware in the barrel through gas circulation to achieve the purpose of drying.

[0004] At present, for dishwashers with a drying function on the market, the driving of the control valve mainly has the following two driving modes:

[0005] One, using a solenoid valve to drive: Refer to the patent document with the publication number CN203029181U and the patent name Dishwasher Drying Device with Valve, which uses a solenoid valve to drive the valve. The solenoid valve has the characteristics of rapid action and fixed stroke. Here, the rapid action will affect the service life of the valve structure. With a fixed stroke, after the structure is slightly deformed, it will cause the defect that the valve cannot be closed tightly, thus affecting the use effect.

[0006] Two, using a wax motor to drive: Refer to the patent document with the publication number CN101185567B and the patent name Driving Device for Dishwasher Air Outlet Mechanism, which uses a wax motor to drive the valve. The wax motor has the characteristics of slow action and fixed stroke. Here, the slow action effectively solves the defect of the rapid action of the above-mentioned solenoid valve. With slow action, the impact force on the structural parts will be reduced to the lowest, solving the above-mentioned problem of affecting the service life. However, its stroke is fixed. Similarly, after long-term use, there will be a defect that the valve cannot be closed tightly, thus affecting the use effect. When the wax motor is in the extended state, it needs to be in the heating state all the time, and the energy consumption is relatively high. Summary of the Utility Model

[0007] The present utility model aims to solve at least one of the technical problems in the related art to a certain extent. For this purpose, an object of the present utility model is to provide a dishwasher air duct device, which has a simple structure and stronger stability and durability compared with the solenoid valve-driven valve.

[0008] In a first aspect, the present utility model provides a dishwasher air duct device, which includes a valve assembly and a condensation air duct. The valve assembly includes a base and a cover plate. The cover plate and the base cooperate to form a valve chamber. The condensation air duct is communicated with the valve chamber. An air outlet is provided on the base. A valve air duct extending from the condensation air duct to the air outlet is provided in the valve chamber. The valve assembly further includes a valve plate mechanism for rotating to close or open the valve air duct and a motor for providing power to the valve plate mechanism. The output shaft of the motor is connected to the valve plate mechanism.

[0009] Preferably, the base includes a support. The air outlet is provided on one side of the support. A duct connection port is provided on the side of the support away from the air outlet. The condensation air duct is connected to the duct connection port.

[0010] Preferably, the base further includes a first partition and a second partition. The first partition and the second partition cooperate with the inner wall of the support to form a motor installation chamber. The motor is installed inside the motor installation chamber. The motor installation chamber is provided on the side close to the duct connection port. The first partition and the inner wall of the support form a wind guide chamber. The valve plate mechanism is installed on the side of the wind guide chamber close to the air outlet. A through hole is provided on the first partition. The valve plate mechanism is connected to the output shaft of the motor through the through hole.

[0011] Preferably, the valve plate mechanism includes a valve plate body, a connecting rod, and a connecting piece. The side of the valve plate body away from the first partition is rotatably connected to the support. The other side of the valve plate body is rotatably connected to one end of the connecting rod. The through hole is provided on the first partition corresponding to the installation position of the connecting rod. The other end of the connecting rod is rotatably connected to one end of the connecting piece. The other end of the connecting piece is connected to the output shaft of the motor.

[0012] Preferably, a limiting block is provided on the side wall of the connecting rod.

[0013] Preferably, a decorative cover is provided at the air outlet. The decorative cover is connected to the air outlet through a connecting piece. A hollow opening is provided on the surface of the decorative cover.

[0014] Preferably, a sealing gasket is provided at the connection between the connecting piece and the air outlet.

[0015] Preferably, the motor is a stepper motor, and the step angle of the stepper motor is 1-10°.

[0016] In a second aspect, the present invention proposes a dishwasher, including any one of the above dishwasher air duct device solutions.

[0017] Preferably, it includes an inner door and an outer door. The dishwasher air duct device is placed between the inner door and the outer door. A communication port is provided on the inner door, and the air outlet of the dishwasher air duct device is correspondingly communicated with the communication port.

[0018] The beneficial effects in the present invention are as follows:

[0019] (1) The structure is simple, and the closing and opening of the valve plate can be achieved through a simple rotating shaft link structure;

[0020] (2) The action speed of the valve plate can be controlled by selecting a suitable stepper motor model, and the action stroke of the valve plate can be adjusted by controlling the number of steps of the stepper motor, so as to ensure the closing and opening positions of the valve;

[0021] (3) Both the action speed of the valve plate and the action stroke of the valve plate can be adjusted according to requirements. Compared with the solenoid valve-driven valve, the stability and durability of this application are stronger;

[0022] (4) Driving the valve through the driving method of this application does not need to be in a heating state all the time compared with the current wax motor driving structure, and can effectively reduce energy consumption. Description of the Drawings

[0023] In the drawings:

[0024] Figure 1 is an exploded view of the valve assembly proposed by the present invention;

[0025] Figure 2 is a schematic structural diagram of the base part proposed by the present invention;

[0026] Figure 3 is a schematic structural diagram of the valve plate mechanism proposed by the present invention;

[0027] Figure 4 is a schematic structural diagram of the valve plate assembly of the dishwasher air duct device in the open state proposed by the present invention;

[0028] Figure 5 is a schematic structural diagram of the valve plate assembly of the dishwasher air duct device in the closed state proposed by the present invention;

[0029] Figure 6 is an exploded view of the dishwasher and the dishwasher air duct device proposed by the present invention.

[0030] In the figure: 1 - valve assembly, 2 - outer door, 3 - condensation air duct, 4 - inner door;

[0031] 11 - connecting piece, 12 - decorative cover, 13 - gasket, 14 - base, 15 - valve plate mechanism, 16 - motor, 17 - cover plate;

[0032] 141 - support, 142 - first partition, 143 - through hole, 144 - air guide cavity, 145 - motor fixing column, 146 - second partition, 147 - air duct connection port, 148 - valve air duct, 149 - air outlet;

[0033] 151 - valve plate body, 152 - connecting rod, 153 - connecting piece, 154 - connecting shaft;

[0034] 41 - communication port. Specific embodiments

[0035] Referring to Figure 1 、 Figure 4 and Figure 5 A dishwasher air duct device includes a valve assembly 1 and a condensation air duct 3. The valve assembly 1 includes a base 14 and a cover plate 17. The cover plate 17 and the base 14 cooperate to form a valve chamber. The condensation air duct 3 communicates with the valve chamber. An air outlet 149 is formed on the base 14. A valve air duct 148 extending from the condensation air duct 3 to the air outlet 149 is provided in the valve chamber. The valve assembly 1 further includes a valve plate mechanism 15 for rotating to close or open the valve air duct and a motor 16 for providing power to the valve plate mechanism 15. The output shaft of the motor 16 is connected to the valve plate mechanism 15.

[0036] Obviously, based on the above, by driving the valve plate mechanism 15 with the motor 16, the closing and opening of the air outlet 149 can be controlled.

[0037] In this embodiment, referring to Figure 2 the base 14 includes a support 141. The air outlet 149 is formed on one side of the support 141. An air duct connection port 147 is provided on the side of the support 141 away from the air outlet 149. The condensation air duct 3 is connected to the air duct connection port 147.

[0038] Obviously, based on the above, in the present application, the air duct connection port 147 and the air outlet 149 are arranged on opposite sides, which facilitates the arrangement of the internal air ducts and related components of the dishwasher air duct device.

[0039] In this embodiment, referring to Figure 2, the base 14 further includes a first partition 142 and a second partition 146. The first partition 142 and the second partition 146 form a motor installation chamber with the inner wall of the support 141. The motor 16 is installed inside the motor installation chamber, and the motor installation chamber is arranged on one side close to the air duct connection port 147. The second partition 146 and the inner wall of the support 141 form a wind guide cavity 144. The valve plate mechanism 15 is installed on one side of the wind guide cavity 144 close to the air outlet 149. A through hole 143 is formed in the first partition 142, and the valve plate mechanism 15 is connected to the output shaft of the motor through the through hole 143.

[0040] Obviously, based on the above, the motor 16 is arranged in a separate chamber, which can prevent the motor 16 from contacting with water vapor and extend the service life of the motor. The valve plate mechanism 15 is installed at the position of the wind guide cavity 144 formed by the first partition 142 and the inner wall of the support 141, that is, at the position where the valve air duct 148 is connected to the wind guide cavity 144. The valve plate mechanism 15 separates the wind guide cavity 144 from the valve air duct 148 to realize the connection and closing of the air path device. Specifically, when the motor controls the valve plate mechanism 15 to rotate in a direction away from the first partition 142, when the valve plate mechanism 15 is opened, the wind guide cavity 144 is connected to the valve air duct 148, so that the outside of the dishwasher is connected to the inside of the dishwasher through the condensation air duct 3, the inlet valve air duct 148 and the wind guide cavity 144; when the motor controls the valve plate mechanism 15 to rotate in a direction close to the first partition 142, the valve plate mechanism 15 is closed, the wind guide cavity 144 is closed from the valve air duct 148, and the inside of the dishwasher is in a sealed state.

[0041] In this embodiment, referring to Figure 2 , motor fixing posts 145 are arranged at positions corresponding to both sides of the motor 16 inside the motor installation chamber, and the motor 16 is fixed by the motor fixing posts 145.

[0042] Obviously, based on the above, the motor 16 is fixed by the motor fixing posts 145, which not only has a firm fixing structure but also facilitates the positioning of the motor 16.

[0043] In this embodiment, referring to Figure 3 , Figure 4 and Figure 5 , the valve plate mechanism 15 includes a valve plate body 151, a connecting rod 152 and a connecting piece 153. One side of the valve plate body 151 away from the first partition 142 is rotatably connected to the support 141, the other side of the valve plate body 151 is rotatably connected to one end of the connecting rod 152, the through hole 143 is formed in the first partition 142 at the installation position corresponding to the connecting rod 152, the other end of the connecting rod 152 is rotatably connected to one end of the connecting piece 153, and the other end of the connecting piece 153 is connected to the output shaft of the motor 16.

[0044] Obviously, based on the above, the rotation of the output shaft of the motor 16 drives the connecting piece 153 to rotate, the rotation of the connecting piece 153 drives the connecting rod 152 to rotate, and the rotation of the connecting rod 152 causes the valve body 151 to move away from or close to the first partition 142, thereby opening or closing the air outlet 149.

[0045] In this embodiment, referring to Figure 3 , Figure 4 and Figure 5 the valve body 151 and the support 141 may be connected by a connecting shaft 154.

[0046] Obviously, based on the above, the valve body 151 can rotate around the connecting shaft 154.

[0047] In this embodiment, referring to Figure 2 , a limiting block for preventing the valve body 151 from opening too large an angle is provided on the side wall of the connecting rod 152.

[0048] Obviously, based on the above, the valve body 151 is limited by the limiting block and the first partition 142 respectively when opening and closing, preventing the valve body 151 from rotating excessively. Specifically, during the opening process of the valve body 151, when the valve body 151 opens to a certain angle, the limiting block abuts against the inner wall of the motor installation chamber with the first partition 142, preventing the valve body 151 from continuing to open; during the closing process of the valve body 151, the end of the valve body 151 connected to the connecting rod 152 rotates until it abuts against the outer wall of the first partition 142, and the closing of the valve body 151 is completed.

[0049] In this embodiment, referring to Figure 4 and Figure 5 , a decorative cover 12 is provided at the air outlet 149. The decorative cover 12 is connected to the air outlet 149 through a connecting piece 11, and a hollow opening is provided on the surface of the decorative cover 12.

[0050] Obviously, based on the above, the installation of the decorative cover 12 not only makes the device more beautiful, but also has the function of preventing foreign objects from entering.

[0051] In this embodiment, referring to Figure 1 , a sealing gasket 13 is provided at the connection between the connecting piece 11 and the air outlet 149. Obviously, based on the above, the sealing effect of the connection is further enhanced through the setting of the sealing gasket 13. In this embodiment, referring to Figure 1 , the motor 16 is a stepper motor, and the step angle of the stepper motor is 1-10°.

[0052] Obviously, based on the above, by selecting a stepper motor, the opening and closing positions of the valve plate mechanism 15 can be controlled by controlling the forward and reverse rotation angles of the stepper motor, so that when the valve body 151 contacts the limiting component, too much force will not be generated.

[0053] In a second aspect, referring to Figure 6 , the present utility model provides a dishwasher, which includes any one of the implementation schemes of the above-mentioned dishwasher air duct device.

[0054] In this embodiment, it includes an inner door 4 and an outer door 2. The dishwasher air duct device is disposed between the inner door 4 and the outer door 2. A communication port 41 is provided on the inner door 4, and the air outlet 149 of the dishwasher air duct device corresponds to and communicates with the communication port 41.

[0055] Obviously, based on the above, through the setting of the present dishwasher air duct device in the dishwasher, the opening and closing of the air outlet 149 are controllable. Therefore, during the operation of the washing program of the dishwasher, the air outlet 149 is closed to prevent heat loss. After the washing program is completed and enters the drying program stage, the air outlet 149 is opened, and the water vapor of the tableware in the barrel is taken away through gas circulation to achieve the purpose of drying.

[0056] To more clearly illustrate the solutions and effects of this embodiment, the following is an example in combination with the accompanying drawings:

[0057] Referring to Figures 1 to 6 , select a motor 16 model adapted to the dishwasher model and requirements. When running the valve opening program of the dishwasher air duct device, the motor 16 is turned on, and the output shaft of the motor 16 rotates at a preset speed and a preset rotation angle, driving the connecting piece 153 to move. The movement of the connecting piece 153 drives the connecting rod 152 to move. When the output shaft of the motor 16 rotates to the preset rotation angle, the motor 16 is turned off, and the valve plate mechanism 15 is opened.

[0058] When running the valve closing program of the dishwasher air duct device, the motor 16 is turned on, and the output shaft of the motor 16 rotates at a preset speed and a preset rotation angle, driving the connecting piece 153 to move. The movement of the connecting piece 153 drives the connecting rod 152 to move. When the output shaft of the motor 16 rotates to the preset rotation angle, the motor 16 is turned off, and the valve plate mechanism 15 is closed.

Claims

1. A dishwasher air duct device, characterized in that: It includes a valve assembly (1) and a condensation air duct (3). The valve assembly (1) includes a base (14) and a cover plate (17). The cover plate (17) cooperates with the base (14) to form a valve chamber. The condensation air duct (3) communicates with the valve chamber. An air outlet (149) is formed on the base (14). A valve air duct (148) extending from the condensation air duct (3) to the air outlet (149) is provided in the valve chamber. The valve assembly (1) further includes a valve plate mechanism (15) for rotating to close or open the valve air duct and a motor (16) for providing power to the valve plate mechanism (15). The output shaft of the motor (16) is connected to the valve plate mechanism (15).

2. The air duct device of a dishwasher according to claim 1, wherein: The base (14) includes a support (141). The air outlet (149) is formed on one side of the support (141). An air duct connection port (147) is provided on the side of the support (141) away from the air outlet (149). The condensation air duct (3) is connected to the air duct connection port (147).

3. The air duct device of a dishwasher according to claim 2, characterized in that: The base (14) further includes a first partition (142) and a second partition (146). The first partition (142) and the second partition (146) and the inner wall of the support (141) form a motor installation chamber. The motor (16) is installed inside the motor installation chamber. The motor installation chamber is arranged on the side close to the air duct connection port (147). The first partition (142) and the inner wall of the support (141) form a wind guiding chamber (144). The valve plate mechanism (15) is installed on the side of the wind guiding chamber (144) close to the air outlet (149). A through hole (143) is formed on the first partition (142). The valve plate mechanism (15) is connected to the output shaft of the motor (16) through the through hole (143).

4. The air duct device of a dishwasher according to claim 3, characterized in that: The valve plate mechanism (15) includes a valve plate body (151), a connecting rod (152) and a connecting piece (153). One side of the valve plate body (151) away from the first partition (142) is rotatably connected to the support (141). The other side of the valve plate body (151) is rotatably connected to one end of the connecting rod (152). The through hole (143) is formed on the first partition (142) corresponding to the installation position of the connecting rod (152). The other end of the connecting rod (152) is rotatably connected to one end of the connecting piece (153). The other end of the connecting piece (153) is connected to the output shaft of the motor (16).

5. The air duct device of a dishwasher according to claim 4, characterized in that: A limiting block is provided on the side wall of the connecting rod (152).

6. The air duct device of a dishwasher according to claim 1, wherein: A decorative cover (12) is provided at the air outlet (149). The decorative cover (12) is connected to the air outlet (149) through a connecting piece (11). Hollow openings are formed on the surface of the decorative cover (12).

7. The air duct device of a dishwasher according to claim 6, characterized in that: A sealing gasket (13) is provided at the connection between the connecting piece (11) and the air outlet (149).

8. A dishwasher air duct device according to claim 1, characterized in that: The motor (16) is a stepping motor, and the step angle of the stepping motor is 1 - 10°.

9. A dishwasher, characterized in that: It includes a dishwasher air duct device as described in any one of claims 1-8.

10. A dishwasher according to claim 9, characterized in that: It includes an inner door (4) and an outer door (2). The dishwasher air duct device is arranged between the inner door (4) and the outer door (2). A communication port (41) is provided on the inner door (4), and the air outlet (149) of the dishwasher air duct device is correspondingly communicated with the communication port (41).

Images