Condensing device with internal and external circulation switching function

Abstract

The utility model discloses an internal and external circulation switching condensing device which comprises an outer shell, an inner shell and a semicircular brake pad, the left end and the right end of a condensing cavity are communicated with fans respectively, a semicircular window is formed in the outer shell, blocking edges protruding backwards are formed on the two radius edges of the brake pad respectively, a baffle is formed in the circle center of the brake pad, and the inner shell and the inner shell are communicated with the fans respectively. The baffle extends in the direction away from the brake pad along the center line of the brake pad, the baffle has a preset width in the front-back direction, a switching motor in transmission connection with the circle center of the brake pad is arranged on the inner shell and used for driving the brake pad to rotate by 180 degrees each time, and when the brake pad covers the semicircular window, the blocking edge is aligned to the bottom of the condensation cavity. When the brake pad is far away from the semicircular window, the baffle coincides with the center line of the semicircular window, the condensation cavity is divided into a left unit cavity and a right unit cavity through the baffle, and the blocking edge is aligned with the bottom of the condensation cavity. The utility model has the characteristics of simple structure, cost saving, easy switching, low noise and the like.

Description

Technical Field

[0001] The utility model relates to an airflow circulation device for a dishwasher, in particular to an internal and external circulation switching condensation device. Background Art

[0002] A large amount of water vapor is generated during the operation of the dishwasher. In order to reduce the internal and external pressures and drive the water vapor to condense, the existing dishwasher is generally provided with an internal and external circulation air flow channel, and is switched to the corresponding circulation mode through a switch control. For the relevant structure, please refer to the Chinese patent publication with publication number CN220385006U and the name "A dishwasher internal and external circulation switching system", which records:

[0003] “A dishwasher internal and external circulation switching system comprises an inner tank, a bottom frame, a water tank and an air inlet mechanism, wherein a water vapor channel is arranged in the water tank, the bottom frame is arranged at the bottom of the inner tank, a condensation cavity is arranged on the bottom frame, the left and right ends of the condensation cavity are respectively connected with an exhaust cavity and an air inlet cavity, an exhaust fan is connected between the exhaust cavity and the outlet end of the water vapor channel, wherein: an exhaust window is arranged on the side of the exhaust cavity, a reversible exhaust window cover is arranged in the exhaust window; an air inlet window is arranged on the side of the air inlet cavity, a reversible air inlet window cover is arranged in the air inlet window; a cover driving mechanism for driving the exhaust window cover and the air inlet window cover to synchronously flip open or synchronously flip close is fixed on the outside of the exhaust cavity and / or the air inlet cavity”;

[0004] This device is provided with windows at the left and right ends of the condensing chamber, and is also equipped with exhaust window cover plates and air inlet window cover plates. The structural design of the windows and cover plates is complex, and a linkage shaft rod running through the left and right ends is required to drive the cover plates on both sides to operate synchronously. Not only is a high requirement on the driving capacity of the drive motor, but it is also difficult to ensure that the cover plates on both sides move accurately and synchronously. In addition, because the cover plates on both sides are adjacent to the fans on the left and right ends of the condensing chamber, when the fans are running, interference occurs between the airflow and the cover plates, causing greater noise, which affects the product quality of the dishwasher. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an internal and external circulation switching condensing device which has a simple structure, saves costs, is easy to switch and has low noise, in view of the deficiencies in the prior art.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0007] A condensing device for switching between internal and external circulation, comprising an outer shell, an inner shell and a semicircular gate, wherein the outer shell and the inner shell are assembled and fixed front and back and a condensing chamber is formed between the two, and the left and right ends of the condensing chamber are respectively connected to fans, a semicircular window is provided on the outer shell, the gate piece is arranged concentrically with the semicircular window, and the center of the gate piece is rotatably matched with the outer shell, two radial sides of the gate piece are respectively formed with retaining edges protruding backwards, a baffle is formed at the center of the gate piece, and the baffle moves away from the gate piece along the center line of the gate piece The baffle plate extends in the direction of the front-rear direction, and has a preset width. The inner shell is provided with a switching motor which is transmission-connected to the center of the gate plate, and the switching motor is used to drive the gate plate to rotate 180° each time, and: when the gate plate covers the semicircular window, the baffle edge is aligned with the bottom of the condensation chamber; when the gate plate is away from the semicircular window, the baffle plate coincides with the center line of the semicircular window, and the condensation chamber is divided into two left and right unit chambers by the baffle plate, and the baffle edge is aligned with the bottom of the condensation chamber.

[0008] Preferably, a plurality of strip grids are evenly distributed in the semicircular window.

[0009] Preferably, a plurality of first condensation columns are formed on the inner wall of the shell, and a plurality of second condensation columns are formed on the inner wall of the gate piece.

[0010] Preferably, a accommodating chamber is formed between the outer shell and the inner shell, the accommodating chamber is located below the condensing chamber, and the gate piece and the baffle can be accommodated in the accommodating chamber.

[0011] Preferably, an inclined plate is formed at the bottom of the condensation chamber, a first end of the inclined plate is integrally formed with the bottom of the condensation chamber, a second end of the inclined plate is inclined toward the accommodating chamber, and a water outlet is formed between the second end of the inclined plate and the bottom of the condensation chamber.

[0012] Preferably, a drain pipe is provided at the bottom of the inner shell, and the drain pipe is communicated with the accommodating chamber.

[0013] Preferably, the thickness of the baffle along the left-right direction gradually decreases from the center of the gate piece toward the outside.

[0014] Preferably, the inner wall of the inner shell is provided with a limiting mechanism for resisting the blocking edge when the gate piece rotates 180°.

[0015] Preferably, the limiting mechanism includes a first stopper and a second stopper, both of which are located in the accommodating chamber, the first stopper and the second stopper are at different distances from the center of the gate piece, one of the two blocking edges is provided with a first avoidance opening and a second avoidance opening, the first avoidance opening can pass through the first stopper, and the second avoidance opening can pass through the second stopper, wherein: when the gate piece rotates in a direction to cover the semicircular window, the second stopper passes through the second avoidance opening, and a blocking edge away from the second avoidance opening abuts against the first stopper; when the gate piece rotates in a direction away from the semicircular window, the second stopper passes through the second avoidance opening in the opposite direction, and a blocking edge away from the second avoidance opening abuts against the second stopper, and at the same time, the first stopper passes through the first avoidance opening.

[0016] Preferably, a humidity sensor is provided on the inner shell, and a sensing end of the humidity sensor is located in the condensation chamber.

[0017] In the internal and external circulation switching condensing device disclosed in the utility model, a condensing chamber is formed between the outer shell and the inner shell, the condensing chamber is directly connected to the left and right ends of the condensing device, and is respectively connected to the fans on the left and right sides. When the dishwasher needs internal circulation, the switching motor is used to drive the gate piece to rotate relative to the center of a circle until the gate piece covers the semicircular window and the blocking edge is aligned with the bottom of the condensing chamber. The condensing chamber is directly connected between the fans on the left and right ends, and the water vapor in the inner tank of the dishwasher is condensed through the condensing chamber and then returned to the inner tank; when the dishwasher needs external circulation, the switching motor is used to drive the gate piece to rotate 180° relative to the center of a circle, the gate piece is away from the semicircular window, and the baffle moves to the center line position of the semicircular window. At this time, the baffle divides the condensing chamber into two left and right unit chambers, and the airflow discharged from the inner tank of the dishwasher is discharged through half of the semicircular window, while the other half of the semicircular window inhales the external airflow and transports it back to the inner tank of the dishwasher. Based on the above principle, the utility model realizes the internal and external circulation switching function. Compared with the prior art, the utility model does not need to set two left and right cover plates and a linkage shaft rod. Not only is the structure simpler, but it is also easier to achieve action switching, and the application cost savings are also significantly reduced. In addition, because there is no need to set a cover plate at the adjacent parts of the fans on both sides, the wind noise is lower when the fans on both sides are running, which helps to improve the quiet effect of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the internal and external circulation switching condensing device of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the utility model after the internal and external circulation switching condensing device is assembled;

[0020] Figure 3 This is the inner structural diagram of the housing and the brake pad;

[0021] Figure 4 This is a structural diagram of the housing and the brake piece when the utility model is switched to the internal circulation state;

[0022] Figure 5 This is a structural diagram of the housing and the brake piece when the utility model is switched to the external circulation state;

[0023] Figure 6 This is the inner structural diagram of the inner shell;

[0024] Figure 7 This is a structural diagram of the internal and external circulation switching condensing device of the utility model when it is applied to a dishwasher. DETAILED DESCRIPTION

[0025] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0026] The utility model discloses an internal and external circulation switching condensing device, combined with Figures 1 to 7 As shown, it includes an outer shell 1, an inner shell 2 and a semicircular gate piece 3, the outer shell 1 and the inner shell 2 are spliced ​​and fixed front and back and a condensation chamber 4 is formed between the two, and the left and right ends of the condensation chamber 4 are respectively connected to the fan, and the outer shell 1 is provided with a semicircular window 10, the gate piece 3 and the semicircular window 10 are arranged concentrically, and the center of the gate piece 3 is rotatably matched with the outer shell 1, and the two radial edges of the gate piece 3 are respectively formed with a rearward protruding blocking edge 30, and a baffle 31 is formed at the center of the gate piece 3, and the baffle 31 extends along the center line of the gate piece 3 in a direction away from the gate piece 3, and the baffle 31 has a preset width along the front and rear direction, and the inner shell 2 is provided with a switching motor 5 connected to the center of the gate piece 3, and the switching motor 5 is used to drive the gate piece 3 to rotate 180° each time, and:

[0027] When the gate piece 3 covers the semicircular window 10, the retaining edge 30 is aligned with the bottom of the condensation chamber 4;

[0028] When the gate piece 3 is away from the semicircular window 10 , the baffle 31 coincides with the center line of the semicircular window 10 , and the condensation chamber 4 is divided into two left and right unit chambers by the baffle 31 , and the baffle edge 30 is aligned with the bottom of the condensation chamber 4 .

[0029] In the above structure, a condensation chamber 4 is formed between the outer shell 1 and the inner shell 2. The condensation chamber 4 is directly connected to the left and right ends of the condensation device and is respectively connected to the fans on the left and right sides. When the dishwasher needs internal circulation, the switching motor 5 is used to drive the gate piece 3 to rotate relative to the center of the circle until the gate piece 3 covers the semicircular window 10 and the retaining edge 30 is aligned with the bottom of the condensation chamber 4. Figure 4 As shown, the condensation chamber 4 is directly connected between the fans at the left and right ends, and the water vapor in the inner tank of the dishwasher is condensed through the condensation chamber 4 and then returned to the inner tank; when the dishwasher needs external circulation, the switching motor 5 is used to drive the gate plate 3 to rotate 180° relative to the center of the circle, the gate plate 3 is away from the semicircular window 10, and the baffle 31 moves to the center line position of the semicircular window 10. At this time, the baffle 31 divides the condensation chamber 4 into two left and right unit chambers, as shown in FIG. Figure 5 As shown, the airflow discharged from the inner tank of the dishwasher is discharged through half of the semicircular window 10, while the other half of the semicircular window 10 sucks in the external airflow and delivers it back to the inner tank of the dishwasher. Based on the above principle, the utility model realizes the internal and external circulation switching function. Compared with the prior art, the utility model does not need to set two left and right cover plates and a linkage shaft rod. Not only is the structure simpler, but it is also easier to achieve action switching, and the application cost is also significantly reduced. In addition, because there is no need to set a cover plate at the adjacent parts of the fans on both sides, the wind noise is lower when the fans on both sides are running, which helps to improve the quiet effect of the dishwasher.

[0030] In practical applications, in order to further reduce wind noise, circular corners may be provided at the left and right ends of the condensation chamber 4 .

[0031] In order to prevent insects and foreign objects from entering, in this embodiment, a plurality of strip grids 11 are evenly distributed in the semicircular window 10 .

[0032] As a preferred implementation of the present invention, the window and the gate piece are preferably arranged in a semicircular shape, and of course they can also be arranged in a fan-shaped structure with the same function. These two methods are interchangeable solutions and therefore both fall within the protection scope of the present invention.

[0033] In order to make the condensation chamber 4 have a better condensation effect, in this embodiment, the inner wall of the shell 1 is formed with a plurality of first condensation columns 12, and the inner wall of the gate plate 3 is formed with a plurality of second condensation columns 32. In practical applications, the inner wall of the shell 1 is not limited to being provided with condensation columns, for example, a condensation strip or other structure may also be provided.

[0034] On this basis, see Figure 3A receiving chamber 6 is formed between the outer shell 1 and the inner shell 2. The receiving chamber 6 is located below the condensation chamber 4. The gate 3 and the baffle 31 can be received in the receiving chamber 6. The receiving chamber 6 is used to provide a receiving space for the gate 3 and the baffle 31 during the switching process. In addition, the receiving chamber 6 also has the function of collecting condensed water, specifically:

[0035] A drain pipe 20 is provided at the bottom of the inner shell 2 , and the drain pipe 20 is communicated with the accommodating chamber 6 .

[0036] In order to better collect the condensed water into the accommodating chamber 6, in this embodiment, an inclined plate 40 is formed at the bottom of the condensing chamber 4, a first end of the inclined plate 40 is integrally formed with the bottom of the condensing chamber 4, a second end of the inclined plate 40 is inclined toward the accommodating chamber 6, and a water guide port 41 is formed between the second end of the inclined plate 40 and the bottom of the condensing chamber 4. The inclined plate 40 and the condensing chamber 4 are integrally injection molded.

[0037] In this embodiment, the thickness of the baffle 31 along the left-right direction gradually decreases from the center of the gate piece 3 to the outside. Figure 1 The thickness of the baffle 31 gradually decreases from the root to the tip, which is beneficial to improving the mechanical strength of the baffle 31.

[0038] As a preferred embodiment, the inner wall of the inner shell 2 is provided with a limiting mechanism for resisting the blocking edge 30 when the gate piece 3 rotates 180°.

[0039] Specifically, see Figure 3 and Figure 6 The limiting mechanism includes a first stopper 21 and a second stopper 22, both of which are located in the accommodating chamber 6, and the first stopper 21 and the second stopper 22 are at different distances from the center of the gate piece 3, and one of the two blocking edges 30 is provided with a first avoidance opening 34 and a second avoidance opening 33, wherein the first avoidance opening 34 allows the first stopper 21 to pass through, and the second avoidance opening 33 allows the second stopper 22 to pass through, wherein:

[0040] When the gate piece 3 rotates in the direction of covering the semicircular window 10, the second stopper 22 passes through the second avoidance opening 33, and a stop edge 30 away from the second avoidance opening 33 abuts against the first stopper 21;

[0041] When the gate piece 3 rotates in a direction away from the semicircular window 10 , the second stopper 22 passes through the second avoidance opening 33 in the opposite direction, and a stop edge 30 away from the second avoidance opening 33 is blocked by the second stopper 22 , while the first stopper 21 passes through the first avoidance opening 34 .

[0042] In the above structure, the first stopper 21 and the second stopper 22 are used to limit the gate piece 3 when the gate piece 3 rotates to different positions, thereby ensuring that the gate piece 3 moves 180° each time, and the second avoidance opening 33 is provided to avoid the second stopper 22. In this embodiment, by providing a limit mechanism, the rotation angle of the gate piece 3 can be automatically limited to 180°, and the motion accuracy of the switching motor 5 is not required to be high, which can save application costs.

[0043] In order to enable the main control system of the dishwasher to detect the humidity condition in the condensation chamber 4 in time, in this embodiment, a humidity sensor 7 is provided on the inner shell 2 , and the sensing end of the humidity sensor 7 is located in the condensation chamber 4 .

[0044] In practical applications, a semicircular rubber strip capable of sealingly cooperating with the gate piece 3 is provided at the edge of the semicircular window 10 , thereby ensuring that the gate piece 3 can reliably close the semicircular window 10 in the internal circulation mode.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An internal and external circulation switching condensing device, characterized in that: The invention comprises an outer shell (1), an inner shell (2) and a semicircular gate piece (3); the outer shell (1) and the inner shell (2) are assembled and fixed front and back to form a condensation chamber (4) between the two; the left and right ends of the condensation chamber (4) are respectively connected to a fan; a semicircular window (10) is provided on the outer shell (1); the gate piece (3) and the semicircular window (10) are arranged cocentrically; the center of the gate piece (3) is rotatably matched with the outer shell (1); two ends of the gate piece (3) are connected to the outer shell (1); The radial edges are respectively formed with rearwardly protruding blocking edges (30); a baffle (31) is formed at the center of the gate piece (3); the baffle (31) extends along the center line of the gate piece (3) in a direction away from the gate piece (3); the baffle (31) has a preset width along the front-rear direction; a switching motor (5) is provided on the inner shell (2) and is transmission-connected to the center of the gate piece (3); the switching motor (5) is used to drive the gate piece (3) to rotate 180° each time, and: When the gate piece (3) covers the semicircular window (10), the retaining edge (30) is aligned with the bottom of the condensation chamber (4); When the gate plate (3) is away from the semicircular window (10), the baffle (31) coincides with the center line of the semicircular window (10), and the condensation chamber (4) is divided into two left and right unit chambers by the baffle (31), and the baffle edge (30) is aligned with the bottom of the condensation chamber (4).

2. The internal and external circulation switching condensing device according to claim 1, characterized in that: A plurality of strip grids (11) are evenly distributed in the semicircular window (10).

3. The internal and external circulation switching condensing device according to claim 1, characterized in that: A plurality of first condensation columns (12) are formed on the inner wall of the housing (1), and a plurality of second condensation columns (32) are formed on the inner wall of the gate piece (3).

4. The internal and external circulation switching condensing device according to claim 1, characterized in that: A accommodating chamber (6) is formed between the outer shell (1) and the inner shell (2); the accommodating chamber (6) is located below the condensing chamber (4); and the gate plate (3) and the baffle (31) can be accommodated in the accommodating chamber (6).

5. The internal and external circulation switching condensing device according to claim 4, characterized in that: An inclined plate (40) is formed at the bottom of the condensation chamber (4); a first end of the inclined plate (40) is integrally formed with the bottom of the condensation chamber (4); a second end of the inclined plate (40) is inclined toward the accommodating chamber (6); and a water guide port (41) is formed between the second end of the inclined plate (40) and the bottom of the condensation chamber (4).

6. The internal and external circulation switching condensing device according to claim 5, characterized in that: A drainage pipe (20) is provided at the bottom of the inner shell (2), and the drainage pipe (20) is connected to the accommodating chamber (6).

7. The internal and external circulation switching condensing device according to claim 1, characterized in that: The thickness of the baffle (31) along the left-right direction gradually decreases from the center of the gate piece (3) toward the outside.

8. The internal and external circulation switching condensing device according to claim 4, characterized in that: The inner wall of the inner shell (2) is provided with a limiting mechanism for resisting the blocking edge (30) when the gate piece (3) rotates 180°.

9. The internal and external circulation switching condensing device according to claim 8, characterized in that: The limiting mechanism comprises a first stopper (21) and a second stopper (22), the first stopper (21) and the second stopper (22) are both located in the accommodating chamber (6), the first stopper (21) and the second stopper (22) are at different distances from the center of the gate plate (3), one of the two stop edges (30) is provided with a first avoidance opening (34) and a second avoidance opening (33), the first avoidance opening (34) allows the first stopper (21) to pass through, and the second avoidance opening (33) allows the second stopper (22) to pass through, wherein: When the gate piece (3) rotates in a direction to cover the semicircular window (10), the second stopper (22) passes through the second avoidance opening (33), and a stopper edge (30) away from the second avoidance opening (33) abuts against the first stopper (21); When the gate piece (3) rotates in a direction away from the semicircular window (10), the second stopper (22) passes through the second avoidance opening (33) in the opposite direction, and a stop edge (30) away from the second avoidance opening (33) abuts against the second stopper (22), while the first stopper (21) passes through the first avoidance opening (34).

10. The internal and external circulation switching condensing device according to claim 1, characterized in that: A humidity sensor (7) is provided on the inner shell (2), and a sensing end of the humidity sensor (7) is located in the condensation chamber (4).

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