Roller washing machine

Abstract

The utility model belongs to the technical field of washing machines, and particularly relates to a roller washing machine which mainly structurally comprises a shell, a water containing outer barrel, a control panel, a washing inner barrel, a liquid sensor and a water level sensor, wherein the water containing outer barrel and the control panel are arranged in the shell, the washing inner barrel is arranged inside the water containing outer barrel, and the liquid sensor is arranged outside the water containing outer barrel. Besides the water level sensor of the drum washing machine, the liquid sensor is additionally arranged, the liquid sensor is connected with the control panel of the washing machine and transmits signals, and the liquid sensor is installed on the outer wall of the water containing outer drum and is not communicated with the interior of the water containing outer drum, so that the corrosion influence of washing water is completely eradicated; a sensing area arranged on the liquid sensor can generate a capacitance value to sense whether washing water or washing foam exists on the upper portion of the water containing outer barrel or not, and a sensing result is sent to the control panel so that the control panel can conduct corresponding drainage or defoaming treatment; a mounting groove is formed in the water containing outer cylinder, the periphery of the outer portion of the liquid sensor is sealed, and external water can be prevented from entering the space between a sensing area and the outer wall of the water containing outer cylinder.

Description

Technical Field:

[0001] The utility model belongs to the technical field of washing machines, and particularly relates to a drum washing machine that can sense the washing water or foam in the upper part of the water storage outer cylinder. Background Art:

[0002] Most drum washing machines in the prior art are equipped with water level sensors, especially mini washing machines. For example, a high-precision low-frequency water level sensor disclosed in Chinese Patent No. 202322389142.9 includes an air cap, a rubber shell, a diaphragm connection assembly, a coil bobbin, a circuit board, and an elastic member. The air cap and the rubber shell are connected to form an installation cavity, and the diaphragm connection assembly, the coil bobbin, the circuit board, and the elastic member are all located in the installation cavity. The diaphragm connection assembly is limit-connected to the inner wall of the air cap, the circuit board is limit-connected to the inner wall of the rubber shell, the coil bobbin is connected to the circuit board, and the coil bobbin is located between the diaphragm connection assembly and the circuit board. One end of the elastic member sequentially passes through the circuit board and the coil bobbin and then abuts against the diaphragm connection assembly, and the other end of the elastic member is connected with an adjusting member, and the adjusting member is adjustably arranged on the rubber shell. The circuit board is provided with a frequency division circuit, a power supply filtering circuit, an oscillation circuit, and an amplification circuit. The output ends of the power supply filtering circuit and the oscillation circuit are both connected to the input end of the frequency division circuit, the output end of the frequency division circuit is connected to the input end of the amplification circuit, and the output end of the amplification circuit is connected with an output interface. The oscillation circuit includes a starting capacitor and an inductance coil connected in parallel, and the inductance coil is wound on the coil bobbin. By adding a frequency division circuit, the frequency of the traditional water level sensor can be reduced to below 2 kHz, which is applied to household or commercial washing machines and dishwashers to sense the height of the incoming water level and effectively improve the sensing accuracy of the product. A method for determining the abnormality of the water level sensor of a washing machine disclosed in Chinese Patent No. 202311038417.2, the washing machine includes: an outer tub, an inlet hole is opened on the outer tub, and the inlet hole is used for injecting water into the outer tub; a drum, coaxially installed in the outer tub; a water inlet valve, used to control the flow and stop of the water flow, and the water inlet valve is communicated with the inlet hole; a motor, used to drive the drum to rotate; a water level sensor, the water level sensor is installed at the bottom of the outer tub and is used to sense the water level in the outer tub of the washing machine when water is inlet. The method for determining the abnormality of the water level sensor includes: after starting the motor to make the drum rotate, controlling the water inlet valve to open so that the water flow flows into the outer tub through the inlet hole; continuously obtaining the power fluctuation value of the started motor; when the power fluctuation value of the motor is greater than the normal fluctuation range, determining that the water level of the washing machine reaches the first water level height, closing the water inlet valve and shutting down the motor, the first water level height refers to the water level height when the water in the outer tub contacts the outer wall of the drum, and the first water level height is a known water level height; calculating the water level error according to the first water level height and the water level height sensed by the water level sensor, and if the water level error is outside the preset range, determining that the water level sensor is abnormal.A compact water level sensor disclosed in Chinese Patent No. 202321187387.7 includes a sensor body. An air chamber is formed inside the sensor body. A first baffle and a second baffle are slidably arranged inside the air chamber. An adjusting mechanism is arranged on the upper surface of the first baffle. Fixed blocks are fixedly connected to the lower surface of the first baffle and the upper surface of the second baffle respectively. An iron core is fixedly connected to the upper surface of one of the fixed blocks. A first spring is slidably sleeved on the surfaces of the two fixed blocks. A connection groove is formed at one end of the sensor body. A pin is arranged inside the connection groove. Cavities are formed on both the upper and lower sides of the connection groove. A fixing mechanism is arranged inside each cavity; it can adjust the height of the water level and prevent the sensor from disconnecting from the washing machine due to the shaking generated by the washing machine. A stirring impeller washing machine disclosed in Chinese Patent No. 202310015744.X includes: a washing machine main body, including a box body, a cover plate installed on the box body, and a washing tub arranged inside the box body. A part of the washing tub can rotate driven by a motor; a washing component, installed on the box body or the cover plate, the washing component includes a mode switch and a program controller connected to each other. The program controller has at least two switching positions, and each switching position corresponds to a working mode. Different rotation orientations of the mode switch correspond to different working modes of the stirring impeller washing machine; a water level component, installed on the box body or the cover plate, the water level component includes a water level switch, a water injection controller, an encoder, and a water level sensor. The water level switch and the water injection controller are both connected to the encoder, and the encoder is connected to the water level sensor. The water level sensor faces the inner area of the washing tub. After the encoder detects that the water level in the washing tub reaches the preset water level, it can directly or indirectly control the water injection controller to stop water injection. Among them, the water level switch can adjust the preset water level through different rotation orientations.

[0003] Currently, during the use of a drum washing machine, if the water level sensor fails, it will cause the washing machine to keep filling with water, resulting in water overflowing to the outside of the machine, which will affect the user; if the user puts too much detergent, it will cause a large amount of foam to be generated during washing, and the excessive foam will overflow to the outside of the machine, which will also affect the user. Especially for mini washing machines, the machine is prone to being overturned during transportation, and the residual water inside the machine is likely to enter the water level sensor, causing the water level judgment to fail and the washing water to overflow; in addition, the drum volume of the mini washing machine is smaller, and it is easier for the user to put too much detergent, resulting in foam overflow. In addition, mini washing machines are often placed on a countertop or on top of a large washing machine. After the water level judgment fails or too much detergent is put in, the overflowing water or foam will flow onto the countertop or the large washing machine, resulting in a worse impact. Therefore, a new type of drum washing machine is developed and designed to solve the above technical problems by adding a liquid sensor that does not occupy internal space. Summary of the Invention:

[0004] The purpose of the present utility model is to overcome the drawbacks of the prior art, and to research and develop a drum washing machine. By adding a liquid sensor to sense the washing water or foam in the upper part of the outer water storage cylinder, the control board is notified to drain the water or defoam, thereby enhancing the user experience.

[0005] To achieve the above purpose, the main structure of the drum washing machine related to the present utility model includes a housing, an outer water storage cylinder and a control board arranged therein, a washing inner cylinder arranged inside the outer water storage cylinder, a liquid sensor arranged outside, and a water level sensor arranged inside the washing inner cylinder; wherein, the liquid sensor is electrically connected to the control board.

[0006] Further, the liquid sensor is arranged in the upper part of the outer water storage cylinder, fixed on the outer wall of the outer water storage cylinder, and is not communicated with the inside of the outer water storage cylinder;

[0007] Further, an installation groove is arranged in the upper part of the outer water storage cylinder, the liquid sensor is arranged in the installation groove 7, and the periphery is sealed.

[0008] Further, the sealing method includes setting rubber parts and applying sealant or sealing coating.

[0009] An induction area is arranged on the liquid sensor related to the present utility model. The induction area is a capacitance generation area, and the induction area is completely and tightly attached to the outer wall of the outer water storage cylinder; wherein, the working principle of the induction area is that when the washing water or washing foam in the outer water storage cylinder continuously rises to the upper part of the outer water storage cylinder, the capacitance value of the induction area changes, and this change signal is transmitted to the control board, and the control board performs corresponding processing: draining the washing water or eliminating the washing foam.

[0010] Compared with the prior art, the present utility model adds a liquid sensor in addition to the water level sensor of the drum washing machine. The liquid sensor is connected to the control board of the washing machine and transmits signals; specifically, the liquid sensor is installed on the outer wall of the outer water storage cylinder, completely attached to the outer wall, and not communicated with the inside of the outer water storage cylinder, eliminating the corrosion effect of the washing water; the induction area arranged on the liquid sensor can generate a capacitance value, sense whether there is washing water or washing foam in the upper part of the outer water storage cylinder, and upload the induction result to the control board to enable it to perform corresponding drainage or defoaming treatment; the installation groove arranged on the outer water storage cylinder, and the periphery of the liquid sensor is sealed, which can prevent external water from entering between the induction area and the outer wall of the outer water storage cylinder; its structure is simple, the design is novel, it does not occupy extra space of the washing machine, can sense excessive water or foam in real time and perform subsequent processing, and enhances the user's use experience. Description of the drawings:

[0011] Figure 1 It is a schematic diagram of the main structure principle of the present utility model.

[0012] Figure 2 Schematic diagram of the partial structural principle of Embodiment 1 of the present utility model.

[0013] Figure 3 Schematic diagram of the partial structural principle of Embodiment 2 of the present utility model.

[0014] Figure 4 Schematic diagram of the partial structural principle of Embodiment 3 of the present utility model. Specific implementation manner:

[0015] The present utility model will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0016] Embodiment 1:

[0017] The main structure of a drum washing machine involved in this embodiment includes a housing 1, an outer water storage tub 2, a control board 3, a washing inner tub 4, a liquid sensor 5, and a water level sensor 6; inside the housing 1, there are arranged the outer water storage tub 2 and the control board 3, inside the outer water storage tub 2, there is arranged the washing inner tub 4, outside there is arranged the liquid sensor 5, and inside the washing inner tub 4, there is arranged the water level sensor 6;

[0018] Among them, the liquid sensor 5 is arranged at the upper part of the outer water storage tub 2, fixed on the outer wall of the outer water storage tub 2, not communicating with the inside of the outer water storage tub 2, and electrically connected to the control board 3.

[0019] On the liquid sensor 5 involved in this embodiment, there is arranged an induction area 51, the induction area 51 is a capacitance generation area, and the induction area 51 is completely and tightly attached to the outer wall of the outer water storage tub 2.

[0020] Embodiment 2:

[0021] The main structure of a drum washing machine involved in this embodiment is the same as that of Embodiment 1. The difference lies in that an installation groove 7 is arranged at the upper part of the outer water storage tub 2. The installation groove 7 can allow external water or foam to enter between the induction area 51 of the liquid sensor 5 and the outer wall of the outer water storage tub 2. The liquid sensor 5 is arranged in the installation groove 7, and a rubber seal 8 for sealing is arranged around it; specifically, the rubber seal 8 is located between the liquid sensor 5 and the outer wall of the outer water storage tub 2, and is in interference sealing with both.

[0022] Embodiment 3:

[0023] The main structure of a drum washing machine involved in this embodiment is the same as that of Embodiment 2. The difference lies in that the liquid sensor 5 is arranged in the installation groove 7, and a sealant 9 is arranged around it.

Claims

1. A drum washing machine, the main structure of which comprises a housing, an outer water tub, a washing inner tub, a water level sensor and a control board, characterized in that, A liquid sensor is provided at the upper part of the water-containing outer cylinder, and the liquid sensor is connected to the control board.

2. The drum washing machine according to claim 1, characterized in that, The liquid sensor is fixed on the outer wall of the water-containing outer cylinder and is not communicated with the inside of the water-containing outer cylinder.

3. The drum washing machine according to claim 2, wherein An induction area is provided on the liquid sensor. The induction area is a capacitance generation area, and the induction area is completely attached to the outer wall of the water-containing outer cylinder.

4. The drum washing machine according to any one of claims 1 to 3, characterized in that, An installation groove is provided on the water-containing outer cylinder.

5. The drum washing machine according to any one of claims 1 to 3, characterized in that, A sealing rubber ring is provided around the liquid sensor.

6. The drum washing machine according to claim 4, characterized in that, The liquid sensor is installed in the installation groove and is provided with sealant around it.

Images