Dish washing machine

Abstract

The utility model relates to a dish-washing machine which comprises a box body, a washing cavity is arranged in the box body, and the washing cavity is provided with an overflow port; the base is arranged at the bottom of the box body, a water storage cavity is formed in the base, and the water storage cavity is communicated with the overflow port through an overflow channel; the base is provided with a water outlet which is communicated with the water storage cavity and located on the downstream portion of the water storage cavity, and the water outlet is provided with a sensor used for detecting the water flow in the water outlet. And the detection speed and precision are high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dish washer. BACKGROUND

[0002] The dish washer is a device for washing tableware and kitchenware with clean water or water mixed with detergent, and the washing water is usually contained on the inner tank bottom plate. When the dish washer is working normally, the water inflow is controlled within the range that the inner tank bottom plate can accommodate; when the control device of the dish washer works abnormally, water may overflow the inner tank bottom plate and enter the base at the bottom of the inner tank.

[0003] In order to issue an alarm in time when water overflows, the dish washer usually has an overflow detection device. Specifically, the overflow detection device includes a shell, an overflow float and a micro switch, the shell is connected to the bottom plate at the bottom of the inner tank, and the bottom surface of the overflow float is attached to the inner tank bottom plate. The micro switch and the overflow float are both arranged in the shell, and the micro switch is located above the overflow float. When water overflows, the overflow float floats up with the rising of the water level, and when the overflow float abuts against the micro switch, the micro switch sends a signal to the control device, and the control device issues an overflow alarm. For example, the Chinese utility model patent for "dish washer" with patent application number CN202321603983.9 (publication number CN220089420U) discloses.

[0004] However, the use of the float to detect the overflow has the following problems: first, the overflow protection of the embedded dish washer basically uses water buoyancy to drive the float to float up to trigger the micro switch for alarm, which is slow in response, and the accuracy of the overflow alarm is greatly different due to the difference in the structure of the float and the float;

[0005] Secondly, the water in the base still exists after the alarm, and if the water continues to leak into the base at this time, when the water exceeds a certain amount, the water will flow out of the base to the user's cabinet, especially when the water inlet valve is directly connected to the water, the continuous water inflow will cause the water in the base to continuously flow to the cabinet, causing damage to the cabinet and the user's kitchen. INVENTION CONTENTS

[0006] The technical problem to be solved by the utility model is to provide a dish washer with fast overflow sensing speed and high detection accuracy in view of the current status of the prior art.

[0007] The technical scheme adopted by the utility model to solve the above technical problem is as follows: a dish washer, comprising

[0008] A box body has a washing cavity inside, and the washing cavity has an overflow port;

[0009] A base is arranged at the bottom of the box body, and the base has a water storage cavity therein, and the water storage cavity is connected with the overflow port through a water overflow channel;

[0010] The base is characterized in that a water outlet is arranged on the base and communicates with the water storage cavity and is located downstream of the water storage cavity, and a sensor for detecting the water flow in the water outlet is arranged at the water outlet.

[0011] Preferably, the water outlet is arranged on the side wall of the water storage cavity, and the lower edge of the water outlet is located at the bottom wall of the water storage cavity. In this way, all the overflow water in the water storage cavity can be collected at the water outlet position, and the overflow water amount can be controlled by setting the alarm value of the sensor, which can effectively avoid the false alarm risk caused by a small amount of condensed water. For example, a value within 1 pulse in 1 minute is set as the condensed water, and no alarm will be given, and an alarm will be given if the value exceeds this value. This scheme not only improves the accuracy of the overflow alarm, but also quickly detects and alarms, avoiding excessive water flow into the water storage cavity of the base due to delayed alarm.

[0012] Alternatively, the water outlet is arranged on the side wall of the water storage cavity, and the lower edge of the water outlet has a spacing with the bottom wall of the water storage cavity. The higher the lower edge of the water outlet is from the bottom wall of the water storage cavity, the more condensed water the water storage cavity can store, and the higher the threshold value. For example, if the lower edge of the water outlet is 3 mm higher than the bottom wall of the water storage cavity, the water stored below 3 mm will not be detected and will be considered as condensed water without alarm, and if the water flow reaches the sensor and reads a pulse, an alarm will be given and the water will be drained.

[0013] In order to facilitate the overflow water to enter the water storage cavity, the water storage cavity is conical in shape with a decreasing cross-sectional area from top to bottom.

[0014] Preferably, a drain pipe is arranged on the base and communicates with the water outlet. The water overflowed into the water storage cavity of the base is directly drained from the water outlet and directly drained to the outside of the machine through the drain pipe, solving the problem that the water in the existing base cannot be drained, causing the water in the base to overflow into the user's cabinet and damage the user's cabinet. The water overflowed into the base is drained from the machine in time, avoiding the risk of water soaking and damaging the user's cabinet.

[0015] In order to prevent odors or insects from entering the dishwasher through the drain pipe, a baffle is movably arranged in the drain pipe or the water outlet, and the baffle can communicate or separate the drain pipe and the water outlet. When drainage is needed, the baffle separates the water outlet and the drain pipe, and odors or insects cannot enter the dishwasher. When drainage is needed, the baffle is opened to communicate the water outlet and the drain pipe.

[0016] The drain pipe and the drain outlet can be communicated or blocked by driving the baffle to move by a driving mechanism such as a motor, preferably, the part of the base forming the drain outlet is inserted into the drain pipe, the baffle is installed in the drain pipe and can be deflected to an inclined state to open the drain outlet under the action of water flow in a direction away from the drain outlet, and the baffle can be in a vertical state to block the drain outlet under the action of gravity. Thus, the impact force of water flow and the gravity of the baffle itself are utilized to realize the communication or blocking of the drain pipe and the drain outlet, without the need of additional components for driving the baffle, and the structure is simple.

[0017] Preferably, the wall surface of the baffle facing the drain outlet is at least partially a tapered surface gradually expanding in the direction of water flow. Thus, the force of water flow acting on the baffle is larger, ensuring that the baffle can be pushed to rotate.

[0018] In the above scheme, the top of the front side wall of the base is provided with a water guide plate, the box body comprises an inner container with an open front side and a door body capable of closing or opening the opening of the inner container, a washing cavity is formed between the inner container and the door body in the closed state of the door body, the overflow outlet is located at the connection between the bottom of the inner container and the bottom of the door body, the front edge of the bottom plate of the inner container extends upward to form a folded plate, and the water guide plate is located on the front side of the folded plate and forms an overflow passage therebetween.

[0019] Compared with the prior art, the advantages of the utility model are: the utility model changes the previous scheme of water buoyancy driving the float to float to trigger the microswitch alarm into detecting the water flow by the sensor, the detection speed is fast and the precision is high, not only solves the problem of long detection period caused by slow float floating, but also solves the problem of large precision difference caused by the structural difference and weight difference of the float, and realizes the fast and accurate overflow detection effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Part structure schematic view of the utility model embodiment;

[0021] Figure 2 Structure schematic view of the base of Figure 1 ;

[0022] Figure 3 Sectional view of Figure 2 ;

[0023] Figure 4 Enlarged view of A of Figure 1 ;

[0024] Figure 5 Structure schematic view of the baffle in Figure 3 . DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with the embodiment and drawings.

[0026] As Figures 1 to 5 shown, the dishwasher of the preferred embodiment comprises a cabinet, a base 2, a sensor and a baffle 3.

[0027] The cabinet has a washing cavity inside, the washing cavity has an overflow port, the base 2 is arranged at the bottom of the cabinet, and the base 2 has a water storage cavity 21 therein, the water storage cavity 21 is connected with the overflow port through a water overflow channel 22.

[0028] Specifically, the top of the front side wall of the base 2 is provided with a water guide plate 23, the cabinet comprises an inner container 1 with an open front side and a door body capable of closing or opening the opening of the inner container 1, in the closed state of the door body, the washing cavity is formed between the inner container 1 and the door body, the overflow port is located at the connection between the bottom of the inner container 1 and the bottom of the door body, the front edge of the bottom plate of the inner container 1 extends upward to form a folding plate 11, and the water guide plate 23 is located at the front side of the folding plate 11 and forms the water overflow channel 22 therebetween.

[0029] The above is the prior art, which will not be described here.

[0030] The water storage cavity 21 is tapered from top to bottom, that is, the cross-sectional area decreases, which facilitates the overflow water to enter the water storage cavity 21. The base 2 is provided with a drain port 24 connected with the water storage cavity 21 and located downstream of the water storage cavity 21, and the drain port 24 is provided with a sensor for detecting the water flow at the drain port 24. The sensor can adopt the existing structure, such as a water flow sensor.

[0031] The drain port 24 is arranged on the side wall of the water storage cavity 21, and one of the arrangement positions of the drain port 24 is that the lower edge of the drain port 24 is located at the bottom wall of the water storage cavity 21. In this way, all the water overflowing into the water storage cavity 21 can be collected at the position of the drain port 24, and the alarm value of the sensor is set to control the overflow water volume, which can effectively avoid the false alarm risk caused by a small amount of condensed water, such as setting a value within 1 pulse in 1 minute as condensed water, which will not alarm, and exceeding this value will alarm. This scheme not only improves the accuracy of the overflow alarm, but also quickly detects and alarms, avoiding too much water flow into the water storage cavity 21 of the base 2 due to delayed alarm.

[0032] Another arrangement position of the drain port 24 is that the drain port 24 is arranged on the side wall of the water storage cavity 21, and the lower edge of the drain port 24 has a spacing with the bottom wall of the water storage cavity 21. The higher the lower edge of the drain port 24 from the bottom wall of the water storage cavity 21, the more condensed water the water storage cavity 21 can store, and the higher the threshold value, such as 3mm higher from the bottom wall of the water storage cavity 21, then the water storage below 3mm is not detected, and is regarded as condensed water without alarm, and if it exceeds 3mm, the water flows to the sensor and reads the pulse, which alarms and drains.

[0033] The base 2 is provided with a drain pipe 4 which is communicated with the drain opening 24. The water overflowing in the base 2 is directly drained out of the drain opening 24 and directly drained out of the machine through the drain pipe 4, so that the water in the base 2 cannot be drained out, which causes the water in the base 2 to overflow into the user's cabinet and damage the user's cabinet, and the water overflowing in the base 2 is timely drained out of the machine, so that the user's cabinet is not damaged by water soaking.

[0034] In order to prevent odor or insects from entering the dishwasher along the drain pipe 4, a baffle 3 is movably arranged in the drain pipe 4 or the drain opening 24, and the baffle 3 can communicate or block the drain pipe 4 and the drain opening 24. When the drain is not needed, the baffle 3 blocks the drain opening 24 and the drain pipe 4, so that odor or insects cannot enter the dishwasher, and when the drain is needed, the baffle 3 is opened to communicate the drain opening 24 and the drain pipe 4.

[0035] In the embodiment, the part of the base 2 forming the drain opening 24 is inserted into the drain pipe 4, the baffle 3 is installed in the drain pipe 4, and can be deflected to an inclined state away from the drain opening 24 under the action of water flow to open the drain opening 24, and the baffle 3 can be in a vertical state under the action of gravity to block the drain opening 24. In this way, the impact force of the water flow and the gravity of the baffle 3 are used to realize the communication or blocking of the drain pipe 4 and the drain opening 24, without the need for additional components to drive the baffle 3, and the structure is simple.

[0036] In the embodiment, the wall surface of the baffle 3 facing the drain opening 24 is at least partially a tapered surface gradually expanding in the direction of the water flow. In this way, the force of the water flow acting on the baffle 3 is larger, which ensures that the baffle 3 can be rotated.

[0037] A spring such as a torsion spring can also be provided to act on the baffle 3, so that the baffle 3 maintains a tendency to rotate towards the drain opening 24 to block the drain opening 24.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. Since the embodiments disclosed in the present application can be arranged in different directions, these terms indicating the direction are only as an illustration and should not be regarded as a limitation. For example, "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

Claims

1. A dishwasher comprising a cabinet having a washing cavity inside, the washing cavity having an overflow port; a base (2) provided at the bottom of the cabinet, the base (2) having a water storage cavity (21) therein, the water storage cavity (21) being in communication with the overflow port through a water overflow channel (22); characterized in that a water outlet (24) being provided on the base (2) and being in communication with the water storage cavity (21) and being located downstream of the water storage cavity (21), a sensor for detecting the water flow in the water outlet (24) being provided at the water outlet (24).

2. The dishwasher according to claim 1, characterized in that: The water outlet (24) is provided on the side wall of the water storage cavity (21), and the lower edge of the water outlet (24) is located at the bottom wall of the water storage cavity (21).

3. The warewashing machine of claim 1, wherein: The water outlet (24) is provided on the side wall of the water storage cavity (21), and the lower edge of the water outlet (24) is located at the bottom wall of the water storage cavity (21).

4. The warewash machine of claim 1, further characterized by: The water storage cavity (21) is tapered from top to bottom in cross-sectional area.

5. The dishwasher according to any one of claims 1 to 4, characterized in that: A drain pipe (4) is provided on the base (2) and is in communication with the water outlet (24).

6. The warewash machine of claim 5, further comprising: A shutter (3) is movably provided in the drain pipe (4) or the water outlet (24), and the shutter (3) can connect or separate the drain pipe (4) and the water outlet (24).

7. The warewash machine of claim 6, further comprising: The part of the base (2) forming the water outlet (24) is inserted into the drain pipe (4), and the shutter (3) is installed in the drain pipe (4) and can be deflected to an inclined state away from the water outlet (24) under the action of water flow to open the water outlet (24), and the shutter (3) can be in a vertical state under the action of gravity to block the water outlet (24).

8. The warewash machine of claim 7, further comprising: The wall surface of the shutter (3) facing the water outlet (24) is at least partially tapered in the direction of water flow.

9. The dishwasher according to any one of claims 1 to 4, characterized in that: A water guide plate (23) is provided on the top of the front side wall of the base (2), the cabinet comprises an inner container (1) with an open front side and a door body capable of closing or opening the opening of the inner container (1), in the closed state of the door body, the washing cavity is formed between the inner container (1) and the door body, the water overflow port is located at the connection between the bottom of the inner container (1) and the bottom of the door body, the front edge of the bottom plate of the inner container (1) extends upward to form a folding plate (11), and the water guide plate (23) is located on the front side of the folding plate (11) and forms the water overflow channel (22) therebetween.

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