CN111265174A - A delivery component and its control method - Google Patents

Abstract

The invention provides a throwing assembly and a control method thereof, wherein the throwing assembly is respectively communicated with a water supply device and a washing part, the throwing assembly comprises an electric control component, a main pipeline and at least two throwing pipelines, the inlet of the main pipeline is connected with the water supply device, the outlet of the main pipeline is communicated with the washing part, a main pipeline valve is arranged on the main pipeline, the inlet of the throwing pipeline is connected with a detergent supply device, the outlet of the throwing pipeline is communicated with the outlet of the main pipeline valve, and the throwing pipeline is provided with a throwing valve; and the electric control component is respectively connected with the main path valve and the throwing valve. According to the throwing assembly and the control method thereof, on one hand, accurate control over each valve body is ensured, abnormal opening and closing of the valve body caused by current or electric signal interference is avoided, on the other hand, the reliability and convenience of valve body assembly can be ensured, independent die opening production of an assembly structure of the valve body is not needed, and the reduction of production cost is facilitated.

Description

A delivery component and its control method

technical field

The present invention relates to a delivery component and a control method thereof.

Background technique

With economic development, people's living standards continue to improve, and the demand for washing equipment (such as washing machines, dishwashers) also continues to increase. For the existing washing equipment, an automatic detergent dispensing device is often provided. The user only needs to store the detergent in the automatic dispensing device in advance, and the washing equipment automatically realizes the dispensing of the detergent through the automatic dispensing device.

Various types of automatic detergent dispensing devices are disclosed in the prior art. Taking patent CN103397496B as an example, a detergent dispensing controller is disclosed, which has a main channel. One end of the main channel is the inlet of the input liquid flow. The other end of the channel is the outlet that can be connected with the water inlet of the washing tub, and is provided with valve A, valve B, valve C, valve D, a liquid collecting chamber and a venturi negative pressure generator. The inlet of valve A is adjacent to the main channel. Through connection, the inlet of valve B can communicate with the liquid storage tank of detergent A, the outlet of valve A and valve B can communicate with the inlet of valve C, the inlet of valve D can communicate with the liquid storage tank of detergent B, and the valve C can communicate with the liquid storage tank of detergent B. The outlet of the valve D is communicated with the inlet of the liquid collection chamber, the outlet of the liquid collection chamber is communicated with the negative pressure port of the venturi negative pressure generator through the return channel, and the outlet of the venturi negative pressure generator is connected with the main channel. The inlets are connected, and the inlet of the Venturi negative pressure generator is the inlet connected with the water source. Among them, the patent CN103397496B realizes the delivery of detergent through the negative pressure adsorption principle of the Venturi device, and valve A and valve C are normally open valves, and valve B and valve D are normally closed valves; at the same time, the patent involves two circuits. Circuit control process or control signal, the first circuit control process controls valve A and valve B at the same time, and valve A is linked with valve B, that is, when valve A is closed, valve B is opened, and when valve A is opened, valve B closed; similarly, the second circuit control process controls valve C and valve D at the same time, and valve C is linked with valve D.

In the patent CN103397496B, valve A, valve B, valve C, and valve D are part of the integrated valve; the researchers of this application have further searched the prior art and found that the integrated valve involved in the patent CN103397496B is in the same application. A detailed description is given in another patent CN203477553U applied by the person; specifically, the patent CN203477553U discloses a switching valve, the valve body is provided with a water inlet, a water outlet and an electromagnetic control assembly, and the electromagnetic control assembly has an electromagnetic coil. , Piston 1 and iron core 1, Piston 1 front end is connected with piston cap 1, valve body is provided with liquid inlet 1, valve seat A, valve seat B, inner cavity 1 and channel 1, the inlet side of valve seat A is connected with the liquid inlet One end of the channel is connected to the water inlet, the other end is connected to the inlet side of the valve seat B, the outlet side of the valve seat A and the outlet side of the valve seat B are opened in the inner cavity 1, the valve seat A and the valve seat B Corresponding to the solenoid valve assembly 1, the outlet side of the valve seat A and the outlet side of the valve seat B correspond to the coaxial lines in the inner cavity 1 and have a distance from each other, and the piston cap 1 of the solenoid valve assembly 1 is located on the outlet side of the valve seat A. The piston cap closes the valve seat A and opens the valve seat B within the range of the distance between the valve seat B and the outlet side of the valve seat B; the inner cavity can communicate with the water outlet.

The researchers of this application have analyzed the specific structure of the switching valve in the patent CN203477553U and its use method, and found that the switching valve is consistent with the two-position three-way valve already disclosed in the prior art;

For example, prior art 1 disclosed in 1973 ("Normally Open Elastic Sealed Two-position Three-Way Solenoid Valve", Yang Renkui, Lin Xinmin, Jiang Xuewen, "Foundry Machinery", No. 04, 1973, pp. 60-61), It discloses the structure of a normally open elastically sealed two-position three-way solenoid valve, and at the same time explains its action principle: when the movable electromagnet is energized, it directly pushes the valve stem, and when the power is off, the pressure spring is used to reset, thereby opening and closing or Switch the air path; specifically, when the coil is not energized, the compressed air enters from the intake nozzle, passes through the slit formed by the pressure spring, enters the central cavity of the valve body, and then enters the side of the cylinder through the air supply nozzle, that is, The air intake nozzle is connected with the air supply nozzle, and the exhaust port is disconnected; when the coil is energized, an electromagnetic field is generated to attract the armature, and the valve stem is pushed through the insulating push rod and the extension rod, the exhaust port is opened, and the air intake nozzle is closed. Make the air supply nozzle communicate with the exhaust port.

The prior art 2 disclosed in 2001 ("high-speed and large-flow two-position three-way on-off solenoid valve", Zhang Xiaojun, Zhu Guowei, Cui Kerun, "Valve", 2001-02, pages 6-8), which designed a A new type of two-position three-way poppet valve, and discloses its specific structure and working principle, as shown in Figure 1, the two-position three-way poppet valve can be used as a normally open valve, and can also be used as a normally closed valve. When it is used as a normally open valve, the oil passage I at the left end is the oil inlet, the middle oil passage III is the control port, and the oil passage II at the right end is the oil return port; when the solenoid valve is energized, the electromagnetic force Under the action of the action, the moving iron core 4 and the outer valve 6 move to the left against the resistance of the return spring 3 until the outer valve 6 and the left inner cone spool 1 are pressed tightly and separate from the right inner cone spool 8. At this time, the oil inlet and the The control port is disconnected, and the oil return port is connected to the control port; when the power is off, the movable armature and the outer valve 6 move to the right under the action of the return spring 3 until the outer valve 6 and the right inner cone spool 8 are pressed tightly, and the The left inner cone spool 1 is separated. At this time, the oil inlet is connected to the control port, and the oil return port is disconnected from the control port.

It can be seen from this that the switching valve in the patent CN203477553U is similar in structure to the normally open two-position three-way valve in the prior art, and its working principle or action mode is basically the same; Compared with the through valve, on the basis of the two-way control process in the patent CN103397496B, the switching valve in the patent CN203477553U is not only complicated in structure, but also needs to be opened separately for the corresponding assembly structure when it cooperates with the washing equipment and the automatic feeding device. It is not conducive to improve the reliability and convenience of the assembly, and also increases the production cost.

SUMMARY OF THE INVENTION

In view of this, the present invention aims to propose a throwing component and a control method thereof, in order to solve the switching valve structure in the automatic throwing device in the prior art on the basis of controlling the throwing component with at least two electrical signals in the prior art Complexity, poor assembly reliability, and poor convenience.

In order to achieve the above object, the technical scheme of the present invention is achieved in this way:

A throwing assembly, the throwing assembly is respectively connected with a water supply device and a washing part, the throwing assembly comprises an electric control part, a main pipeline and at least two throwing pipelines, the inlet of the main pipeline is connected with the water supply device, the The outlet of the main pipeline is connected with the washing part, the main pipeline is provided with a main pipeline valve, the inlet of the injection pipeline is connected with the detergent supply device, the outlet of the injection pipeline is connected with the outlet of the main pipeline valve, and the An injection valve is arranged on the injection pipeline; the electronic control components are respectively connected with the main circuit valve and the injection valve.

Further, the electronic control component includes a power supply device and a one-way current limiting device, the power supply device is connected to the injection valve, and the power supply device is connected to the main circuit valve through the one-way current limiting device.

Further, the one-way current limiting device is a diode or a relay.

Further, the one-way current limiting device includes a main body, a moving contact, a first static contact, and a second static contact, and the moving contact is respectively matched with the first static contact and the second static contact, so The movable contact is connected to the main body, the main body is connected to the power supply device, the first static contact is connected to the power supply device, and the first static contact is connected in parallel with the main body, and the second static contact Connect to the main valve.

Further, the main circuit valve is a solenoid valve or an electric valve, and the injection valve is a solenoid valve or an electric valve.

Further, the main circuit valve is a normally open valve, and the injection valve is a normally closed valve.

Further, the injection component includes a first injection pipeline and a second injection pipeline; a first injection valve is set on the first injection pipeline, and a second injection valve is set on the second injection pipeline; the electronic control The components include a first power supply device, a second power supply device, a first one-way current limiting device, and a second one-way current limiting device; the first power supply device is connected to the first injection valve, and the first power supply device passes through the first The one-way current limiting device is connected to the main circuit valve; the second power supply device is connected to the second injection valve, and the second power supply device is connected to the main circuit valve through the second one-way current limiting device.

Further, the first one-way current limiting device is a diode or a relay; the second one-way current limiting device is a diode or a relay; the main circuit valve is a normally open valve, the first injection valve, the second The injection valves are normally closed valves.

A method for controlling delivery components, comprising:

S1. Turn on the water supply device, the main circuit valve is in the open state, and the delivery valve is in the closed state;

S2. Turn on the power supply device, close the main circuit valve, open the injection valve, and start the detergent injection;

S3, judging whether the dosage or the putting time of the detergent reaches the preset value; if not, return to step S2; if so, go to step S4;

S4. Turn off the power supply device, the main circuit valve is restored to the open state, and the delivery valve is restored to the closed state;

S5. Turn off the water supply device.

Compared with the prior art, the delivery component and the control method thereof of the present invention have the following advantages:

In the present invention, an injection assembly and a control method thereof are provided on the basis of at least two electrical signals in the prior art to control the injection assembly, and a solenoid valve that is easily available in the market is provided on the corresponding pipeline. Or electric valve, and a one-way current limiting device is set in the electric control part, on the one hand, it ensures the precise control of each valve body, and avoids the mutual interference of two or multiple electrical signals or the valve body caused by the wrong flow of electrical signals. On the other hand, compared with the switching valve and two-position three-way valve in the prior art, the price of the solenoid valve or the electric valve is relatively low, the structure is simpler, and it can be directly installed on the corresponding valve. On the pipeline, it is beneficial to improve the reliability and convenience of valve body assembly;

At the same time, the present invention does not need to modify the electrical signal control device of the existing washing equipment, and only needs to connect the power supply device and the one-way current limiting device with each valve body after installing each valve body on the corresponding pipeline, Then, each power supply device can be electrically connected to the electrical signal control device in the washing equipment, which not only ensures the convenience of assembling the injection components, but also eliminates the need for separate mold production for the assembly structure of the injection components, which is beneficial to reduce production costs.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of a two-position three-way valve in the prior art;

2 is a schematic structural diagram of a delivery component and a delivery component of a control method thereof according to an embodiment of the present invention;

3 is a schematic diagram of the assembly of a delivery component and a control method thereof according to an embodiment of the present invention;

FIG. 4 is a schematic assembly diagram of the delivery component of a delivery component and a control method thereof according to an embodiment of the present invention;

FIG. 5 is another schematic structural diagram of the delivery component of a delivery component and a control method thereof according to an embodiment of the present invention;

FIG. 6 is another assembly schematic diagram of a delivery component and a delivery component of a control method thereof according to an embodiment of the present invention.

Description of reference numbers:

Left inner cone valve core 1, static iron core 2, return spring 3, moving iron core 4, gland 5, outer valve 6, valve body 7, right inner cone valve core 8, main pipeline 101, delivery pipeline 102, the first A feeding pipeline 102a, a second feeding pipeline 102b, a main circuit valve 11, a feeding valve 12, a first feeding valve 12a, a second feeding valve 12b, a power supply device 13, a first power supply device 13a, a second power supply device 13b, One-way current limiting device 14, main body 140, movable contact 141, first static contact 142, second static contact 143, first one-way current limiting device 14a, second one-way current limiting device 14b, detergent Supply device 15 , water supply device 16 , washing part 17 .

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

The present embodiment is directed to the injection component in the washing equipment, the injection component has an automatic injection function, which is the same as the function of a conventional automatic injection device, and the injection component is used to control the detergent injection channel and the washing water injection channel, In order to realize the automatic delivery of detergents.

In the prior art, the switching valve involved in the automatic injection device is not only complicated in structure, but also needs to be separately opened for the corresponding assembly structure when it cooperates with the automatic injection device, and each group of linkage valve bodies must be individually assembled. It is not conducive to improving the reliability and convenience of its assembly, and also increases the production cost. In order to solve the problems in the prior art that the switching valve has a complex structure, poor assembly reliability and convenience, the present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Example 1

As shown in FIG. 2 and FIG. 3 , the present embodiment provides an injection assembly, which is communicated with the water supply device 16 and the washing part 17 respectively, and the injection assembly includes a main pipeline 101 and at least two injection pipelines 102. The inlet of the main pipeline 101 is connected to the water supply device 16, the outlet of the main pipeline 101 is connected to the washing part 17, the main pipeline 101 is provided with a main pipeline valve 11, and the inlet of the injection pipeline 102 is connected to the washing part 17. The agent supply device 15 is connected, the outlet of the injection pipeline 102 is communicated with the outlet of the main circuit valve 11 , and the injection valve 12 is arranged on the injection pipeline 102 .

Wherein, in order to realize the application of the dispensing assembly on the washing equipment, the detergent supply device 15 is used to supply one or more detergents, such as detergent, bleach, softener, etc.; the water supply device 16 is a supply device for washing water, which can be a conventional water pipe or a water tank; the washing part 17 has a cavity structure for containing and washing the laundry, washing water and detergent, such as washing in a conventional washing machine buckets, washing buckets of dishwashers, etc. Since their related specific structures and usage methods are all in the prior art, they will not be repeated here.

In order to facilitate the control of the injection assembly, the injection assembly further includes an electric control component, which is respectively connected with the main circuit valve 11 and the injection valve 12; at the same time, the main circuit valve 11 is a solenoid valve or an electric valve, Similarly, the injection valve 12 is a solenoid valve or an electric valve; in addition, preferably, the main circuit valve 11 is a normally open valve, and the injection valve 12 is a normally closed valve.

In this embodiment, on the basis that the electronic control component provides at least two circuits of electrical signals to control the injection component in the prior art, the corresponding electrical signals are all corresponding to the main circuit valve 11, and for each injection pipeline 102 As far as the injection valve 12 is concerned, there is an electrical signal corresponding to it, so that the main circuit valve 11 and any injection valve 12 are in a linkage relationship, so that when the electronic control component provides any electrical signal, the corresponding injection valve 12 is opened, At the same time, the main circuit valve 11 is closed for injecting detergent; when the electronic control component stops providing electrical signals, the main circuit valve 11 returns to the open state, and the corresponding injection valve 12 returns to the closed state.

However, since the multi-circuit electrical signals provided by the electronic control components all pass through the main circuit valve 11, it is easy to cause mutual interference between two or multiple circuits of electrical signals or the wrong electrical signal flow direction, so that the injection valve 12 that does not need to be opened is opened, resulting in the valve body. Control error or failure; therefore, in order to avoid abnormal opening and closing of the valve body caused by electrical signal interference or flow direction error, the researchers of the present invention have further improved the delivery component after in-depth analysis and research on the prior art Specifically, on the basis that the electronic control component provides at least two electrical signals to control the injection component, the electronic control component includes a power supply device 13 and a one-way current limiting device 14, and the power supply device 13 is connected with the injection valve 12. , the power supply device 13 is connected to the main circuit valve 11 through the one-way current limiting device 14 , so that the current direction between the power supply device 13 and the injection valve 12 is only the direction from the power supply device 13 to the injection valve 12 .

Wherein, the power supply device 13 is a conventional power supply device in the prior art, which can be a DC power supply or an AC power supply, or the power supply device 13 is connected with a conventional 220V or 380V power supply line, and the power supply device 13 has a transformer or an AC converter. The DC converter can convert the conventional 220V or 380V power into the power suitable for the main circuit valve 11, the injection valve 12 and other components. Since they are all in the prior art, they will not be repeated here;

The one-way current limiting device 14 is used to limit the current in one direction. In this embodiment, the setting of the one-way current limiting device 14 is such that the current can only be delivered from the power supply device 13 to the injection valve 12 , and cannot It is sent from the injection valve 12 to the power supply device 13 . During actual use, the one-way current limiting device 14 may be a diode, a relay, or the like according to the electrical conditions of the main circuit valve 11 , the delivery valve 12 and the electrical specifications of other components.

Considering that when people use washing equipment, they often use different detergents according to their needs, in order to meet people's needs, especially in one washing process, the needs of using a variety of detergents; as shown in Figure 3, attached As shown in FIG. 4, in this embodiment, the injection assembly includes at least two injection pipelines 102;

Taking the injection component including two injection pipelines as an example, the injection component includes a first injection pipeline 102a and a second injection pipeline 102b; the first injection pipeline 102a is provided with a first injection valve 12a, and the first injection pipeline 102a A second injection valve 12b is provided on the second injection pipeline 102b; correspondingly, the electronic control components include a first power supply device 13a, a second power supply device 13b, a first one-way current limiting device 14a, and a second one-way current limiting device 14b; the first power supply device 13a is connected to the first injection valve 12a, the first power supply device 13a is connected to the main circuit valve 11 through the first one-way current limiting device 14a; the second power supply device 13b is connected to the second The injection valve 12b is connected, and the second power supply device 13b is connected to the main circuit valve 11 through the second one-way flow limiting device 14b.

The first one-way current limiting device 14a is one of a diode and a relay; the second one-way current limiting device 14b is one of a diode and a relay; the main circuit valve 11 is a normally open valve , the first injection valve 12a and the second injection valve 12b are both normally closed valves.

Regarding the actual installation of the delivery component in the present invention, the present invention improves the electronic control component on the basis of retaining at least two electrical signals provided by the electronic control component in the prior art to control the delivery component. In the washing equipment of the prior art, it is only necessary to use the electrical signal control device with two or more circuits of electrical signals in the prior art, such as the integrated circuit board or the central controller in the washing equipment, when installing each valve body on the After the corresponding pipeline is connected, the power supply device 13 and the one-way current limiting device 14 are electrically connected to each valve body, and then each power supply device 13 is electrically connected to the integrated circuit board or the central controller in the washing equipment. , without changing the electrical signal control device in the prior art, the electrical signal control device in the prior art can be directly used to control the opening and closing of each power supply device 13, thereby ensuring the universality of the injection components, which is beneficial to Improve the ease of assembly of delivery components.

The specific control method for the delivery component includes the following steps:

S1, open the water supply device 16;

At this time, the main circuit valve 11 is in the open state, the first injection valve 12a and the second injection valve 12b are in the closed state, and the washing water flows out from the water supply device 16, flows through the main circuit 101, and flows into the washing part 17, thereby realizing the washing equipment. water intake process.

S2, turn on the power supply device 13;

Specifically, the power supply device 13 can be regarded as one of the first power supply device 13a or the second power supply device 13b, and the first power supply device 13a or the second power supply device 13b is turned on according to user needs or preset washing modes; If the first power supply device 13a is turned on, the first power supply device 13a supplies power to the main circuit valve 11 and the first injection valve 12a respectively, so that the main circuit valve 11 is closed and the first injection valve 12a is opened. The current limiting function of the device 14b makes the power or electrical signal provided by the first power supply device 13a not transmitted to the second power supply device 13b and the second injection valve 12b, and will not interfere with the second power supply device 13b and the second injection valve. 12b, that is, it can ensure that the second power supply device 13b and the second injection valve 12b are kept closed; at this time, the detergent in the detergent supply device 15 flows from the first injection pipeline 102a into the main pipeline 101, The washing water in the main line 101 is shut off by the closed main line valve 11 .

If the second power supply device 13b needs to be turned on, the second power supply device 13b supplies power to the main circuit valve 11 and the second injection valve 12b respectively, so that the main circuit valve 11 is closed and the second injection valve 12b is opened. The current limiting effect of the current device 14a ensures that the power or electrical signal provided by the second power supply device 13b will not be transmitted to the first power supply device 13a and the first injection valve 12a, and will not interfere with the first power supply device 13a and the first injection valve 12a. The state of the valve 12a can ensure that the first power supply device 13a and the first injection valve 12a are both kept closed; at this time, the detergent in the detergent supply device 15 flows from the second injection pipeline 102b into the main pipeline 101 , the washing water in the main circuit 101 is cut off by the closed main circuit valve 11 .

S3. Turn off the power supply device 13;

Among them, it should be noted that the power supply device 13 turned off in step S3 and the power supply device 13 turned on in step S2 are the same device, that is, if the first power supply device 13a is turned on in step S2, it is also turned off in step S3. The first power supply device 13a; if the second power supply device 13b is turned on in step S2, the second power supply device 13b is also turned off in step S3;

While step S2 is being carried out, the same as the conventional technology, by judging whether the dosage or the putting time of the detergent reaches the preset value, if the preset value is not reached, the power supply device 13 is kept on, and if the preset value is reached value, then go to step S3, turn off the power supply device 13, at this time the main circuit valve 11 is restored to the open state, the injection valve 12 is restored to the closed state, the washing water flows into the main circuit 101 again, and the detergent in the main circuit 101 is driven to flow into the same. In the washing part 17, the dosing of the detergent is realized.

S4, close the water supply device 16;

After the washing agent is put in, it is the same as the conventional washing equipment, by judging whether the dosage or the putting time of the washing water reaches the preset value, if not, keep the water supply device 16 turned on, and continue to feed water; Then, the water supply device 16 is turned off, and the water supply is stopped; after that, the washing equipment can carry out or continue to carry out the washing process.

In the present invention, on the basis of still maintaining at least two circuits of electrical signals in the prior art to control the delivery component, a solenoid valve or an electric valve that is easily available in the market is arranged on the corresponding pipeline, and the electronic control component The one-way current limiting device is installed in the valve, which ensures the precise control of each valve body on the one hand, and avoids the occurrence of abnormal opening and closing of the valve body caused by the mutual interference of two or multiple electrical signals or the wrong flow of electrical signals. Compared with the switching valve and the two-position three-way valve in the prior art, the price of the solenoid valve or the electric valve is relatively low, the structure is simpler, and it can be directly installed on the corresponding pipeline relatively firmly, which is beneficial to improve the assembly of the valve body. reliability and convenience;

At the same time, the present invention does not need to modify the electrical signal control device of the existing washing equipment, and only needs to connect the power supply device and the one-way current limiting device with each valve body after installing each valve body on the corresponding pipeline, Then, each power supply device can be electrically connected to the electrical signal control device in the washing equipment, which not only ensures the convenience of assembling the injection components, but also eliminates the need for separate mold production for the assembly structure of the injection components, which is beneficial to reduce production costs.

Example 2

As shown in FIG. 5 and FIG. 6 , on the basis of Embodiment 1, in this embodiment, the one-way current limiting device 14 selects a relay as an example to further describe the delivery component.

The one-way current limiting device 14 includes a main body 140, a movable contact 141, a first static contact 142, and a second static contact 143; the main body 140 is a conventional relay main body, with an iron core, a coil, an armature, and a spring In view of the fact that the main body of the relay is in the prior art, it will not be repeated here, and the relays can also be purchased in the market; the present invention only further describes the assembly relationship of the one-way current limiting device 14 , the movable contact 141 is respectively matched with the first static contact 142 and the second static contact 143, the movable contact 141 is connected with the main body 140, the main body 140 is connected with the power supply device 13, the first static contact The contact 142 is connected to the power supply device 13, and the first static contact 142 and the main body 140 are in a parallel relationship, and the second static contact 143 is connected to the main circuit valve 11; specifically, for the use of the relay , when the power supply device 13 is not turned on, the movable contact 141, the first static contact 142, and the second static contact 143 are all disconnected; when the power supply device 13 is turned on, the main body 140 is energized, and drives the The movable contact 141 moves, and the movable contact 141 is respectively attached to the first static contact 142 and the second static contact 143, so that a passage is formed between the power supply device 13 and the main circuit valve 11, and the current flows from the power supply device 13 to the main circuit valve 11. After passing through the first static contact 142, the movable contact 141, and the second static contact 143, it is transmitted to the main circuit valve 11, so that the main circuit valve 11 in the normally open state is closed; at the same time, the power supply device 13 also sends The valve 12 supplies current so that the delivery valve 12, which is in the normally closed state, opens.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (9)

1. An injection assembly, which is communicated with a water supply device (16) and a washing part (17) respectively, characterized in that the injection assembly comprises an electric control component, a main pipeline (101) and at least two injection pipes Road (102), the inlet of the main pipeline (101) is connected to the water supply device (16), the outlet of the main pipeline (101) is connected to the washing part (17), and the main pipeline (101) is provided with a main road valve (11), the inlet of the injection pipeline (102) is connected with the detergent supply device (15), the outlet of the injection pipeline (102) is communicated with the outlet of the main circuit valve (11), the injection An injection valve (12) is arranged on the pipeline (102); the electronic control components are respectively connected with the main circuit valve (11) and the injection valve (12). 2. An injection assembly according to claim 1, characterized in that, the electronic control component comprises a power supply device (13), a one-way current limiting device (14), the power supply device (13) and the injection valve (13). 12) Connection, the power supply device (13) is connected to the main circuit valve (11) through a one-way current limiting device (14). 3. A throwing component according to claim 2, characterized in that the one-way current limiting device (14) is a diode or a relay. 4. The delivery assembly according to claim 2, wherein the one-way current limiting device (14) comprises a main body (140), a movable contact (141), a first stationary contact (142), The second stationary contact (143), the movable contact (141) is matched with the first stationary contact (142) and the second stationary contact (143) respectively, and the movable contact (141) is matched with the main body (140) ) connection, the main body (140) is connected to the power supply device (13), the first static contact (142) is connected to the power supply device (13), and the first static contact (142) is connected to the main body (140) ) are connected in parallel, and the second static contact (143) is connected to the main circuit valve (11). 5 . The injection assembly according to claim 1 , wherein the main circuit valve ( 11 ) is a solenoid valve or an electric valve, and the injection valve ( 12 ) is a solenoid valve or an electric valve. 6 . 6 . The injection assembly according to claim 1 , wherein the main circuit valve ( 11 ) is a normally open valve, and the injection valve ( 12 ) is a normally closed valve. 7 . 7. An injection assembly according to claim 1, characterized in that, the injection assembly comprises a first injection pipeline (102a), a second injection pipeline (102b); the first injection pipeline (102a) ) is provided with a first injection valve (12a), the second injection pipeline (102b) is provided with a second injection valve (12b); the electronic control component includes a first power supply device (13a), a second power supply device ( 13b), a first one-way current limiting device (14a), a second one-way current limiting device (14b); the first power supply device (13a) is connected to the first injection valve (12a), the first power supply device (13a) is connected to the main circuit valve (11) through the first one-way current limiting device (14a); the second power supply device (13b) is connected to the second injection valve (12b), and the second power supply device (13b) ) is connected to the main circuit valve (11) through the second one-way flow limiting device (14b). 8 . The delivery assembly according to claim 7 , wherein the first one-way current limiting device (14a) is a diode or a relay; the second one-way current limiting device (14b) is a diode or a relay. 9 . A relay; the main circuit valve (11) is a normally open valve, and the first injection valve (12a) and the second injection valve (12b) are both normally closed valves. 9. A method for controlling a delivery component, wherein the delivery component is the delivery component according to any one of claims 1-8, and the method comprises: S1, open the water supply device (16), the main circuit valve (11) is in an open state, and the injection valve (12) is in a closed state; S2, open the power supply device (13), the main circuit valve (11) is closed, the injection valve (12) is opened, and the detergent is injected; S3, judging whether the dosage or the putting time of the detergent reaches the preset value; if not, return to step S2; if so, go to step S4; S4. Turn off the power supply device (13), the main circuit valve (11) is restored to the open state, and the delivery valve (12) is restored to the closed state; S5. Turn off the water supply device (16).

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