A water inlet device for automatically dispensing detergent

Abstract

The present invention proposes a water inlet device for automatically dispensing detergent, wherein a flushing and liquid inlet channel is connected in parallel to the water delivery channel in the inlet direction of the main electromagnetic water inlet valve, the flushing and liquid inlet channel is connected to a flushing electromagnetic water inlet valve, a liquid exchange chamber is connected to the negative pressure port direction of the venturi tube, a liquid outlet channel is connected between the outlet of the liquid exchange chamber and the negative pressure port of the venturi tube, a flow sensor is connected to the liquid outlet channel, one end of the flushing and liquid inlet channel is connected to the main channel in the inlet direction of the main electromagnetic water inlet valve, the other end of the flushing and liquid inlet channel is connected to the liquid outlet channel or the main channel in the outlet direction of the venturi tube, the inlet of the liquid exchange chamber is connected to a valve A and a detergent A box connected to the inlet direction of the valve A, the outlet water of the main channel finally flows into the washing bucket, and the inlet of the liquid exchange chamber is also connected to a drainage channel. The flushing agent can be prevented from flowing through the flow meter during the flushing process, and the service life of the flow meter can be extended.

Description

Technical Field

[0001] The invention relates to the technical field of liquid preparation delivery devices, in particular to a water inlet device for automatically delivering detergent. Background Art

[0002] With the accelerated pace of life and the continuous improvement of consumers' energy-saving awareness, users pay more attention to energy-saving and convenient home appliances when purchasing home appliances. As a household appliance with a high frequency of use, energy saving and convenience have become important factors for customers to purchase washing machines. Washing machines with automatic detergent dispensing functions are therefore becoming more and more popular with users. However, most ordinary washing machines on the market add detergent manually when washing clothes, and the amount of detergent is difficult to control. When the amount of detergent is too small, the washing effect is poor and the cleaning ratio is low; when the amount of detergent is too large, it not only wastes detergent, but also increases the difficulty of rinsing, wastes water, electricity and time, and increases the cost of a single laundry. Based on this, washing machine manufacturers have successively launched washing machines with automatic detergent dispensing.

[0003] At present, the design of automatic detergent dispensing devices for washing machines is mainly based on two ideas: one is to use the layout of the water inlet pipe and the detergent dispensing pipeline. When the water inlet flows, the detergent adding pipeline produces a Venturi effect, and the negative pressure generated is used to suck the detergent into the dispensing pipe for dispensing; the other is to use various liquid pumps as devices for pumping and dispensing detergent. The automatic detergent dispensing device designed according to the above ideas is difficult to accurately measure the detergent. This is because the viscosity of the detergent varies greatly at different temperatures. When the ambient temperature is low, the viscosity of the detergent is high, and the speed of the driving motor of the automatic adding device decreases due to the increase in load, and the amount of addition becomes smaller; when the ambient temperature is high, the viscosity of the detergent is low, and the speed of the driving motor of the automatic adding device increases due to the decrease in load, and the amount of addition becomes larger, resulting in difficulty in accurately measuring the amount of detergent to be dispensed.

[0004] China's CN102605589B document discloses a device for automatically dispensing detergent according to the concentration, including an automatic detergent dispensing device and a detergent storage container, and also including a quantitative dissolution container, the top of the quantitative dissolution container is connected to a water inlet pipe, the other end of the water inlet pipe is equipped with a water inlet valve, and the water inlet valve is connected to the washing machine controller; the detergent storage container is connected to the automatic detergent dispensing device, and the automatic detergent dispensing device is connected to the detergent storage container and the washing machine controller; there is an overflow port above the quantitative dissolution container, a probe is installed on the overflow port, the probe is connected to the washing machine controller, and the overflow port is connected to the washing tub through a conduit; a water outlet valve is installed at the bottom of the quantitative dissolution container, and the water outlet valve is connected to the washing tub and the washing machine controller. This technical solution cannot flexibly control the amount of detergent to be dispensed according to the washing situation, the control accuracy is not accurate enough, and the structure is complex, which needs to be improved.

[0005] In order to solve the above problems, China's CN201620254459 document discloses a water inlet device capable of dispensing detergent, wherein the main channel is connected to a main electromagnetic water inlet valve, and the water delivery channel in the inlet direction of the main electromagnetic water inlet valve is connected in parallel with a flushing and liquid inlet channel, and the flushing and liquid inlet channel is connected to a flushing electromagnetic water inlet valve and a liquid exchange chamber located in the outlet direction of the flushing electromagnetic water inlet valve, and the flushing and liquid inlet channel is connected to a valve A and a detergent A box connected to the inlet direction of the valve A between the flushing electromagnetic water inlet valve and the liquid exchange chamber, and a liquid outlet channel is connected between the outlet of the liquid exchange chamber and the negative pressure port of the venturi tube, and a flow sensor is connected to the liquid outlet channel, and the outlet of the main channel is connected to the washing bucket. This technical solution can solve the problems of complex structure, high cost, inaccurate detergent metering, and cumbersome operation process of the above water inlet device, but during the flushing process, the flushing agent will flow through the flow meter, which will cause damage to the flow meter in the long term, and needs to be improved. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to provide a water inlet device for automatically adding detergent, which can avoid the detergent flowing through the flow meter during the flushing process and can extend the service life of the flow meter.

[0007] To achieve the above-mentioned purpose, the present invention proposes a water inlet device for automatically dispensing detergent, which has a main channel, the main channel is connected to a main electromagnetic water inlet valve and a venturi tube, a flushing and liquid inlet channel is connected in parallel to the water delivery channel in the inlet direction of the main electromagnetic water inlet valve, the flushing and liquid inlet channel is connected to the flushing electromagnetic water inlet valve, a liquid exchange chamber is connected in the negative pressure port direction of the venturi tube, a liquid outlet channel is connected between the outlet of the liquid exchange chamber and the negative pressure port of the venturi tube, a flow sensor is connected to the liquid outlet channel, one end of the flushing and liquid inlet channel is connected to the main electromagnetic water inlet valve inlet direction The other end of the flushing and liquid inlet channel is connected to the flow sensor, the liquid outlet channel between the venturi tube or the liquid exchange chamber, the liquid outlet channel between the flow sensor or the main channel in the outlet direction of the venturi tube. The inlet branch of the liquid exchange chamber is connected with a valve A and a detergent box A connected to the inlet direction of the valve A. The outlet water of the main channel eventually flows into the washing tub. The inlet of the liquid exchange chamber is also connected with a drainage channel. The drainage channel is connected with a one-way valve B. The outlet water of the drainage channel eventually flows into the washing tub. The valve A is a one-way valve or a solenoid valve.

[0008] Preferably, a two-position three-way electromagnetic switching valve is connected between the branch connection between the one-way valve B and the valve A and the liquid exchange chamber, and a detergent B box is connected to the bypass inlet of the three-way electromagnetic switching valve.

[0009] Preferably, the inlet of the liquid exchange chamber is also connected to a solenoid valve and a detergent box B connected to the inlet direction of the solenoid valve.

[0010] Preferably, a water circuit switching device is connected between the outlet direction of the main electromagnetic water inlet valve and the inlet direction of the venturi tube on the main channel, and the driving part of the water circuit switching device is connected in series to the liquid inlet channel in the outlet direction of the flushing electromagnetic water inlet valve, and the water circuit is switched by controlling the driving part.

[0011] Preferably, a water circuit switching device is connected to the liquid inlet channel in the outlet direction of the flushing electromagnetic water inlet valve, and the driving part of the water circuit switching device is connected in series between the outlet direction of the main electromagnetic water inlet valve and the inlet direction of the venturi tube on the main channel, and the water circuit switching device is controlled by the driving part to switch the water circuit.

[0012] Beneficial effects of the present invention: The present invention can avoid flushing agent flowing through the flow meter during the flushing process by connecting the water outlet end of the flushing and liquid inlet channel to the liquid outlet channel or the main channel in the outlet direction of the venturi tube, thereby extending the service life of the flow meter.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural principle diagram of a first embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0015] Figure 2 It is a structural principle diagram of a second embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0016] Figure 3 It is a structural principle diagram of a third embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0017] Figure 4 It is a structural principle diagram of a fourth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0018] Figure 5 It is a structural principle diagram of a fifth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0019] Figure 6 It is a structural principle diagram of a sixth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0020] Figure 7 It is a structural principle diagram of a seventh embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0021] Figure 8 It is a structural principle diagram of an eighth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0022] Fig. 9It is a structural principle diagram of a ninth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0023] Fig.10 It is a structural principle diagram of a tenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0024] Fig.11 It is a structural principle diagram of an eleventh embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0025] Fig.12 It is a structural principle diagram of a twelfth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0026] Fig.13 It is a structural principle diagram of a thirteenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0027] Fig.14 It is a structural principle diagram of a fourteenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0028] Fig.15 It is a structural principle diagram of a fifteenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0029] Fig.16 It is a principle diagram of the liquid extraction process of the fifteenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0030] Fig.17 It is a schematic diagram of the flushing process of the fifteenth embodiment of a water inlet device for automatically dispensing detergent according to the present invention;

[0031] Fig.18 It is a principle diagram of the flushing and water inlet process of the fifteenth embodiment of the water inlet device for automatically dispensing detergent of the present invention. DETAILED DESCRIPTION

[0032] Example 1

[0033] See also Figure 1The present invention comprises a main channel 11, the main channel 11 is connected with a main electromagnetic water inlet valve 1 and a venturi tube 7, a flushing and liquid inlet channel 12 is connected in parallel to the water delivery channel in the inlet direction of the main electromagnetic water inlet valve 1, the flushing and liquid inlet channel 12 is connected with a flushing electromagnetic water inlet valve 2, a liquid exchange chamber 5 is connected in the negative pressure port direction of the venturi tube 7, a liquid outlet channel 14 is connected between the outlet of the liquid exchange chamber 5 and the negative pressure port of the venturi tube 7, a flow sensor 6 is connected to the liquid outlet channel 14, and the water inlet end of the flushing and liquid inlet channel 12 is connected to the main electromagnetic water inlet valve 1 The main channel 11 in the inlet direction is connected, the water outlet end of the flushing and liquid inlet channel 12 is connected to the liquid outlet channel 14 between the flow sensor 6 and the venturi tube 7, the inlet branch of the liquid exchange chamber 5 is connected to a valve A3 and a detergent box A 4 connected to the inlet direction of the valve A, the outlet water of the main channel 11 eventually flows into the washing tub, the inlet of the liquid exchange chamber 5 is also connected to a drainage channel 13, the drainage channel 13 is connected to a one-way valve B8, the outlet water of the drainage channel 13 eventually flows into the washing tub, and the valve A3 is a one-way valve or a solenoid valve.

[0034] Example 2

[0035] See also Figure 2 The difference from Example 1 is that the water inlet end of the flushing and liquid inlet channel 12 is connected to the main channel 11 in the inlet direction of the main electromagnetic water inlet valve 1, and the water outlet end of the flushing and liquid inlet channel 12 is connected to the liquid outlet channel 14 between the liquid exchange chamber 5 and the flow sensor 6.

[0036] Example 3

[0037] See also Figure 3 The difference from Example 1 is that the water inlet end of the flushing and liquid inlet channel 12 is connected to the main channel 11 in the inlet direction of the main electromagnetic water inlet valve 1, and the water outlet end of the flushing and liquid inlet channel 12 is connected to the main channel 11 in the outlet direction of the venturi tube 7.

[0038] Embodiment 4, 5, 6

[0039] See also Figure 4 , 5 , 6, based on embodiments 1, 2, and 3 respectively, a two-position three-way electromagnetic switching valve 9 is added between the branch connection of the one-way valve B8 and the valve A3 and the liquid exchange chamber 5, and a detergent B box 10 is connected to the bypass inlet of the three-way electromagnetic switching valve 9.

[0040] Embodiment 7, 8, 9

[0041] See also Figure 7 , 8, 9, based on embodiments 1, 2, and 3 respectively, a solenoid valve 101 and a detergent B box 10 connected to the inlet direction of the solenoid valve 101 are further connected to the inlet of the liquid exchange chamber 5.

[0042] Embodiment 10, 11, 12

[0043] See also Fig.10 , 11 , 12, are based on embodiments 1, 2, and 3 respectively, and a water circuit switching device 110 is connected between the outlet direction of the main electromagnetic water inlet valve 1 and the inlet direction of the venturi tube 7 on the main channel 11, and a driving part 111 of the water circuit switching device 110 is connected in series to the liquid inlet channel 12 in the outlet direction of the flushing electromagnetic water inlet valve 2, and the water circuit switching device 110 is controlled by the driving part 111 to switch the water circuit.

[0044] Embodiment 13, 14, 15

[0045] See also Fig.13 , 14 , 15, are based on Examples 1, 2, and 3 respectively, and a water circuit switching device 110 is connected to the liquid inlet channel 12 in the outlet direction of the flushing electromagnetic water inlet valve 2, and a driving unit 111 of the water circuit switching device 110 is connected in series between the outlet direction of the main electromagnetic water inlet valve 1 and the inlet direction of the venturi tube 7 on the main channel 11, and the water circuit switching device 110 is controlled by the driving unit 111 to switch the water circuit.

[0046] Working process of the present invention:

[0047] The present invention provides a water inlet device for automatically dispensing detergent. The working principle is described as follows, taking Embodiment 15 as an example:

[0048] Extraction: See Fig.16 , the main electromagnetic water inlet valve 1 is opened and the flushing electromagnetic water inlet valve 2 is closed, and the water inlet of the main channel 11 passes through the main electromagnetic water inlet valve 1 and the D and E ports of the water channel switching device 110 in sequence, and is discharged from the outlet of the main channel 11. When the water flows through 7, negative pressure is generated, and the detergent A in the detergent A box enters the liquid exchange chamber 5 through the transmission of negative pressure. The residual water in the liquid exchange chamber 5 flows through the flow sensor 6 under the pressure of the detergent and enters the liquid outlet channel 14.

[0049] Flushing: See Fig.17 The main electromagnetic water inlet valve 1 is closed and the flushing electromagnetic water inlet valve 2 is opened. The incoming water flows through the flushing electromagnetic water inlet valve 2 and the driving unit 111 in sequence. Part of the incoming water is directly discharged from the outlet 11, and part of the incoming water enters the liquid exchange chamber 5 through the venturi tube 7 and the flow sensor 6, and finally is discharged into the washing barrel from 13, which can flush the residual washing liquid in 5.

[0050] Flushing and water intake: see Fig.18, the main electromagnetic water inlet valve 1 and the flushing electromagnetic water inlet valve 2 are both opened, and the water inlet of the liquid inlet channel 12 flows through the flushing electromagnetic water inlet valve 2 and the driving unit 111 in sequence. A part of the water inlet of the liquid inlet channel 12 is directly discharged into the washing tub from the outlet 11 to achieve water inlet, wherein the water inlet of the driving unit 111 can control the water circuit switching device 110 to switch the water circuit, that is, control the D and F ports to achieve the passage, and the water in the main channel 11 is discharged after passing through the main electromagnetic water inlet valve 1 and the D and F ports of the water circuit switching device 110 to achieve water inlet, and another part of the water in the liquid inlet channel 12 enters the liquid exchange chamber 5 through the venturi tube 7 and the flow sensor 6, and is finally discharged into the washing tub from 13, which can rinse the residual washing liquid in 5.

[0051] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A water inlet device for automatically dispensing detergent, comprising a main channel (11), the main channel (11) being connected to a main electromagnetic water inlet valve (1) and a venturi tube (7), characterized in that: A flushing and liquid inlet channel (12) is connected in parallel to the water delivery channel in the inlet direction of the main electromagnetic water inlet valve (1), the flushing and liquid inlet channel (12) is connected to the flushing electromagnetic water inlet valve (2), a liquid exchange chamber (5) is connected to the negative pressure port of the venturi tube (7), a liquid outlet channel (14) is connected between the outlet of the liquid exchange chamber (5) and the negative pressure port of the venturi tube (7), the liquid outlet channel (14) is connected to a flow sensor (6), one end of the flushing and liquid inlet channel (12) is connected to the main channel (11) in the inlet direction of the main electromagnetic water inlet valve (1), and the other end of the flushing and liquid inlet channel (12) is connected to the flow sensor (6), the liquid outlet channel (14) between the venturi tube (7) or the liquid exchange chamber (5) and the flow sensor (6) or the liquid outlet channel (14) between the venturi tube (7) in the outlet direction of the venturi tube (7). The main channel (11) is connected to the inlet of the liquid exchange chamber (5), the inlet of the liquid exchange chamber (5) is connected to a valve A (3) and a detergent A box (4) connected to the inlet direction of the valve A (3), the outlet water of the main channel (11) eventually flows into the washing tub, the inlet of the liquid exchange chamber (5) is also connected to a drainage channel (13), the drainage channel (13) is connected to a one-way valve B (8), and the outlet water of the drainage channel (13) eventually flows into the washing tub; the liquid inlet channel (12) in the outlet direction of the flushing electromagnetic water inlet valve (2) is connected to a water circuit switching device (110), the driving part (111) of the water circuit switching device (110) is connected in series between the outlet direction of the main electromagnetic water inlet valve (1) and the inlet direction of the venturi tube (7) on the main channel (11), and the water circuit is switched by controlling the water circuit switching device (110) through the driving part (111).

2. The water inlet device for automatically dispensing detergent according to claim 1, characterized in that: A two-position three-way electromagnetic switching valve (9) is connected between the branch connection of the one-way valve B (8) and the valve A (3) and the liquid exchange chamber (5), and a detergent B box (10) is connected to the bypass inlet of the three-way electromagnetic switching valve (9).

3. The water inlet device for automatically dispensing detergent according to claim 1, characterized in that: The inlet of the liquid exchange chamber (5) is also connected to a solenoid valve (101) and a detergent box B (10) connected to the inlet direction of the solenoid valve (101).

4. The water inlet device for automatically dispensing detergent according to claim 1, characterized in that: The valve A (3) is a one-way valve or a solenoid valve.

5. A water inlet device for automatically dispensing detergent according to any one of claims 1 to 4, characterized in that: A water circuit switching device (110) is connected between the outlet direction of the main electromagnetic water inlet valve (1) and the inlet direction of the venturi tube (7) on the main channel (11); a driving unit (111) of the water circuit switching device (110) is connected in series to the liquid inlet channel (12) in the outlet direction of the flushing electromagnetic water inlet valve (2); and the water circuit is switched by controlling the water circuit switching device (110) through the driving unit (111).

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