CN116641208A - Device for quantitatively adding solid additives, water inlet system, washing equipment and hot water equipment - Google Patents

Abstract

The invention provides a device for quantitatively putting solid additives, which comprises a container, wherein the container is divided into a first cavity and a second cavity by a partition plate, a siphon structure spans the partition plate, an inlet is inserted into the first cavity to be close to the bottommost part of the first cavity, and an outlet is inserted into the second cavity to be not higher than the inlet; the first cavity is used for containing the solid additives and is provided with a water inlet for water to dissolve the solid additives; the overflow height from the first cavity to the second cavity is h, and the highest point height h1 of the flow channel of the siphon structure is not higher than the height h; also provides a water inlet system, a washing device and a hot water device comprising the device for quantitatively adding the solid additive. The device for quantitatively adding the solid additive can continuously maintain the quantitative concentration of the solid additive when water is fed; when water inflow is stopped, the siphon structure is utilized to drain the water stored in the storage box cavity, so that the problem that the concentration is too high and the material is wasted due to long-term water soaking and dissolution of solid additives is avoided.

Description

Device for quantitatively adding solid additives, water inlet system, washing equipment and hot water equipment

Technical Field

The invention relates to a device for quantitatively adding solid additives, a water inlet system, washing equipment and hot water equipment, wherein IPC is classified into E03D 9/02, E03D 9/03, D06F 39/02 and D06F 23/04.

Background

The existing washing equipment and hot water equipment often need to add solid additives, usually a storage tank filled with the solid additives is directly connected to a water inlet pipeline, and water flows through the storage tank to dissolve the solid additives in the tank, so that liquid containing the solid additives is obtained for use. The solution cannot effectively control the concentration of the fixing additive, particularly the fixing additive is soaked in water for a long time, so that the concentration of the fixing additive in liquid which is used each time by the equipment is high, and adverse effects and material waste can be caused.

Chinese patent CN1318681C discloses a washing machine in which a container for holding solids is provided in a water storage tank for storing water, and a siphon structure for discharging the stored water and an overflow port of a predetermined height for overflow water discharge are provided in the water storage tank. According to the scheme, a certain volume of water is stored and is contacted with the solid additive for dissolution setting time, the water is led into the water storage of the washing barrel for stirring, and finally liquid with stable concentration of the solid additive is obtained.

For other terms and general knowledge, see "mechanical engineering handbook" and "motor engineering handbook" (written group, 1997 edition 2 of mechanical industry Press) and "engineering fluid mechanics" (main edition Xie Zhenhua, metallurgical industry Press, 2013 edition 4).

Disclosure of Invention

In order to solve the problems described in the background art, the invention provides a device for quantitatively adding solid additives, which comprises a container, wherein the container is divided into a first cavity and a second cavity by a partition plate, a siphon structure spans the partition plate, an inlet is inserted into the first cavity to be close to the bottommost part of the first cavity, and an outlet is inserted into the second cavity to be not higher than the inlet; the first cavity is used for containing the solid additives and is provided with a water inlet for water to dissolve the solid additives; the height of overflow from the first cavity to the second cavity is h, the highest point height h1 of the flow channel of the siphon structure is not higher than the height h, and when the water level of water entering the first cavity reaches the overflow height h, water containing the quantitative solid additive concentration continuously flows to the second cavity and is discharged outside the container through a water outlet arranged in the second cavity.

According to the technical scheme, the overflow height from the first cavity to the second cavity is set to be h in the container, and the contact volume of the solid additive in the first cavity and water is controlled. When water is fed, when the water level of the first cavity reaches the overflow height h, the water flowing to the second cavity is discharged to the outside of the container, the water level of the first cavity basically keeps the fixed height h to be in contact with the solid additive, and the solid additive is dissolved, so that the quantitative concentration of the solid additive is kept; when water inflow is stopped, the water stored in the second cavity is emptied and absorbed by the first cavity through the siphon structure, and meanwhile, the water stored in the first cavity is drained, so that the solid additive is prevented from being dissolved by soaking water for a long time, and the concentration is too high and the material is wasted.

Further, the flow rate of the water source entering the first cavity is Q1, the flow rate of the water overflowing from the water source to the second cavity across the height h of the isolation plate is Q2, the flow rate of the water discharged from the second cavity to the outside of the container is Q3, the flow rate of the water overflowing from the flow channel of the siphon structure to the second cavity is Q4, and q1=q2+q4=q3; q1> Q4.

Because the overflow flow of the first cavity to the second cavity and the drainage flow of the second cavity to the outside of the container are equal to the water inflow flow of the water source to the first cavity, the liquid entering the container from the water inlet can be smoothly discharged out of the container from the water outlet arranged in the second cavity without accumulating in the container, the water level of the stored water in the first cavity basically keeps a fixed height h to be in contact with the solid additive and dissolve the solid additive, and the quantitative concentration of the solid additive is kept more accurate; because the flow of overflow water to the second cavity through the flow channel of the siphon structure is smaller than the flow of water source water inlet to the first cavity, the flow channel of the siphon structure can be kept full, and the siphon effect is ensured.

Further, a storage box is arranged in the first cavity, a structure which is communicated with the first cavity and can be used for discharging water is arranged in the front wall area and the rear wall area which are not higher than the overflow height h along the water flow advancing direction, and two sides of the storage box are attached to the inner wall of the first cavity. The structure forces water flow to flow through the solid additives in the storage box, which is more beneficial to quantitatively controlling the concentration of the solid additives.

Further, the isolation plate is provided with a notch, the siphon structure is a siphon tube which is fixed on the notch in a watertight manner and spans the isolation plate, and the inner cavity of the siphon tube forms a first siphon runner.

Further, the second cavity is provided with a tubular column with a central through hole and a tubular cap sleeved on the top opening of the tubular column, and a gap between the tubular cap and the tubular column is communicated with the central through hole to form a second siphon runner. The second chamber may be used with a pre-stored liquid detergent mixed with water containing a concentration of solid additives introduced from the first chamber.

Further, the highest point height h2 of the second siphon flow passage is smaller than the highest point height h1 of the first siphon flow passage.

The invention also provides a water inlet system which comprises a water inlet electromagnetic valve communicated with the water inlet and the device for quantitatively adding the solid additive.

Further, the water draining device further comprises a connected water draining assembly, and an electromagnetic valve is further arranged between the second cavity and the water draining assembly. The solenoid valve may switch the flow of water from the second chamber to any flow passage of the drain assembly for draining.

Furthermore, a pressure reducing valve connected to a water source is arranged at the upstream of the water inlet electromagnetic valve. The pressure reducing valve is combined with the water inlet electromagnetic valve, so that the water inlet quantity of the container can be stabilized, and the concentration of the solid additive can be controlled stably.

In addition, the invention also provides washing equipment, which comprises any one of the water inlet systems and a washing cylinder for receiving the water with a certain solid additive concentration.

In addition, the invention also provides water heating equipment, which comprises any water inlet system and an electric heater for heating the water with certain solid additive concentration.

Drawings

FIG. 1 is a transverse cross-sectional view of example 1 of the device for dosing solid additives of the present invention.

Fig. 2 is a cross-sectional view A-A of fig. 1.

Fig. 3 is a B-B cross-sectional view of fig. 1.

FIG. 4 is a transverse cross-sectional view of example 2 of the device for dosing solid additives of the present invention.

Fig. 5 is a C-C cross-sectional view of fig. 4.

Fig. 6 is a D-D cross-sectional view of fig. 4.

Fig. 7 is a sectional view of E-E of fig. 4.

FIG. 8 is a longitudinal cross-sectional view of example 3 of the device for dosing solid additives of the present invention.

Fig. 9 is a longitudinal sectional view of embodiment 1 of the water intake system of the present invention.

Fig. 10 is a longitudinal sectional view of embodiment 2 of the water intake system of the present invention.

Fig. 11 is a longitudinal sectional view of an embodiment of the washing apparatus of the present invention.

Fig. 12 is a schematic view showing a change in water level and a change in hypochlorous acid concentration of the first chamber when water is supplied to the washing apparatus.

FIG. 13 is a longitudinal cross-sectional view of an embodiment of the water heating apparatus of the present invention.

Fig. 14 is a schematic view showing the change of the concentration of silicon phosphorus crystals when water is supplied from the hot water apparatus.

Reference numerals:

the device 10 for quantitatively adding solid additives comprises a container 101, a first cavity 1011, a second cavity 1012, a water inlet 1013, a water outlet 1014, a partition plate 102, a first through hole 1021, a notch 1022, a storage box 103, a chassis 103', a through hole 1031', a siphon 105, a thin wall 105', a pipe column 106, a cylindrical cap 107, a first siphon runner 108, a second siphon runner 109, an electromagnetic water inlet valve 1, a water draining component 2, an electromagnetic valve 3, a pressure reducing valve 4, a washing cylinder 5 and an electric heater 6.

Detailed Description

As shown in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. In describing the structure of the apparatus, system and device of the present invention, the liquid is taken as the front or front side, the flow-out side is taken as the rear or rear side, the liquid level rising side is taken as the upper side or upper side, and the liquid level falling side is taken as the lower side or lower side. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 to 3, the device 10 for dosing solid additives in embodiment 1 includes a container 101 having a bottom and a substantially rectangular shape, a first cavity 1011 and a second cavity 1012 are formed by dividing the interior of the container 101 into a smaller space by a partition plate 102, the partition plate 102 may be formed by ribs protruding upward from the bottom of the container, or may be formed by water-tight connection and fixation of separate parts to the bottom of the container and the side wall, a plurality of first through holes 1021 are formed in the partition plate 102 having a height h from the bottom of the container, the water level of the first cavity 1011 is higher than h, and water overflows from the first cavity 1011 to the second cavity 1012 through the through holes 1021, so the height h is generally designed to be more than half of the height of the inner cavity of the container 101. The first cavity 1011 is provided with solid additives, the lower part of the peripheral wall of the first cavity 1011 is provided with a water inlet 1013 for guiding water into the first cavity 1011, and the solid additives placed in the first cavity 1011 are gradually contacted and dissolved with the inlet water. The partition board 102 of this embodiment is further provided with a through hole in a region lower than the first through hole 1021, and the siphon structure is formed by a circular siphon tube 105 installed in the through hole and crossing the partition board, the siphon tube 105 is fixedly connected with the periphery of the through hole in a watertight manner, and the inlet of the siphon tube 105 is inserted into the first cavity 1011 to be close to the bottommost part thereof, specifically, not touching the bottom of the cavity 1011. The outlet of siphon tube 105 is inserted into second cavity 1012 at a height not higher than the height of the inlet, in particular equal to the height of the inlet, or lower than the height of the inlet, and does not touch the bottom of cavity 1012. The lower the inlet and outlet of siphon tube 105, the more advantageous the siphon is to drain the accumulated water when stopping the water feed, but too low a blockage should be avoided. The siphon tube 105 has an inner cavity forming a first siphon flow channel 108 having a highest height h1. To ensure that the first siphon flow passage 108 is filled with water, the flow rate through the first siphon flow passage 108 is designed to be smaller than the flow rate into the water inlet 1013, and the height h1 is not higher than the height h of the overflow water. To avoid the solid additive from blocking the inlet of the siphon tube 105, a chassis 103' may be disposed at the bottom of the first cavity 1011 to support the solid additive away from the bottom of the first cavity 1011 by a certain gap, as shown in fig. 3, which is not smaller than the gap between the inlet of the siphon tube 105 and the bottom of the first cavity 1011, and the chassis 103' is provided with a plurality of through holes 1031' for providing water leakage, through which the solution of the dissolved solid additive can be introduced into the first siphon runner 108.

A lid capable of opening and closing at least the first cavity 1011 is provided in the upper opening of the container 101, and is fixed to the upper part of the container 101 by a detachable connection means such as screwing, fastening, or hinge rotation, and the lid of the container 101 are combined to ensure non-airtight closure capable of siphoning, and it is preferable to provide an air vent hole in the lid as shown in fig. 2.

Assuming that the flow rate of the water inlet 1013 is Q1, the total flow rate of the overflow through the plurality of first through holes 1021 is Q2, the flow rate of the water outlet 1014 is Q3, the overflow flow rate through the first siphon flow passage 108 is Q4, and since the downstream flow rate is not greater than the upstream flow rate, in order to ensure that the liquid entering the first cavity 1011 from the water inlet 1013 reaches the overflow height h, the liquid can be smoothly discharged to the second cavity 1012 and discharged out of the container 101 through the water outlet 1014 without accumulating in the container 101, so that the water storage height of the first cavity 1011 exceeds the height h, and the siphon effect can be generated by filling the first siphon flow passage 108, the following needs to be satisfied:

Q1＝Q2+Q4＝Q3

Q1>Q4

for this purpose, each flow channel can be designed according to engineering fluid mechanics, and the specific design is shown in fig. 2 and 3, if the aperture of the water inlet 1013 is d1 and the aperture length is l1; the number of the first through holes 1021 is 6, the aperture is d2, the aperture of the drain port 1014 is d3, the aperture length is l3, the pipe diameter of the first siphon flow passage 108 is d4, the pipe length is about 2×h1, and according to the calculation formula of engineering fluid mechanics for flow, the flow is:

Q1＝μA(2gH)^(1/2)

calculating the above Q1 according to the small orifice outflow flow, taking mu=0.61, and the water inlet sectional area A=3.14 (d 1≡2)/4; the H is the water head difference at the two ends of the water inlet, namely the water inlet pressure, and can be calculated according to 0.7Mpa and 70 meters of water head;

Q2＝6*μA(2gH)^(1/2)

calculating the above Q2 according to the outlet flow of the large orifice, taking mu=0.8, and because the overflow height H needs to be controlled, the H is the design difference value higher than the overflow height H, and calculating the cross-sectional area A=3.14 (d2≡2)/4 of the first through hole 1021 according to the maximum value d 2;

Q3＝＝μA(2gH)^(1/2)

calculating the Q3 according to the nozzle outflow flow, wherein mu=0.82 and the water outlet cross section area A=3.14 (d 3≡2)/4; h is the water head difference at two ends of the water outlet, and is calculated according to the diameter d3 of the water outlet under the condition that no water exists;

Q4＝(3.14*(d4^2)/4)*(2gH)^(1/2)

the calculation of the flow rate Q4 of the upper siphon 105 assumes an ideal case, irrespective of the loss of hydraulic power along the way and locally, H being the difference between the water levels of the first and second cavities, approximately corresponding to (H-d 3);

by the above calculation formula, the size constraint relation of the first through hole 1021, the siphon tube 105 and the water outlet 1014 can be obtained assuming that the size of the water inlet 1013 is known.

In a specific implementation, because the flow channel has an edge and a local hydraulic loss, the flow channel can be designed in a mode of combining test verification, so that the liquid entering the first cavity 1011 from the water inlet 1013 can be more accurately ensured to be smoothly discharged to the second cavity 1012 and discharged out of the container 101 through the water outlet 1014 after reaching the overflow height h, and can not be accumulated in the container 101, and the water storage height of the first cavity 1011 exceeds the height h.

The main difference between the device 10 for dosing solid additives of example 2 shown in fig. 4 to 7 and the above-mentioned example 1 is that: the height of the partition 102 is designed to be h, which is generally designed to be more than half the height of the cavity of the container 101. When the water level of the first chamber 1011 is higher than h, water overflows from the first chamber 1011 to the second chamber 1012, and thus, the height h is also the overflow height of the partition plate 102. The storage box 103 with the upper end open and capable of adding solid additives is placed in the first cavity 1011, a structure which is communicated with the first cavity 1011 and capable of outputting water is arranged in the lower section area of the storage box 103 and lower than the height h, and the structure which can outputting water can be formed by injection molding a plurality of through holes on the peripheral wall of the storage box as shown in fig. 5, or can be formed by integrally injection molding a filter screen and the storage box. Preferably, through holes communicated with the first cavity 1011 are formed in the front wall area and the rear wall area with the height h of the storage box 103 along the water flow advancing direction, and two sides of the storage box 103 are in fit contact with the inner wall of the first cavity 1011, wherein the fit contact comprises watertight connection processes such as tight fit without gaps or small gaps adopting sealing glue and the like. Thus, the water entering the water inlet 1013 needs to enter the storage box 103 through the front through hole of the storage box 103, and then enter the other side of the first cavity 1011 through the rear through hole of the storage box 103. The storage box 103 accommodates therein solid additives which come into contact with water to perform a sterilizing, scale inhibiting or cleaning function, and the solid additives at the lower part of the storage box 103 are gradually dissolved in contact with the inflow water. The upper opening or upper part of the storage box 103 is provided with a closable structure but with a proper number of air release holes; as shown in fig. 7, the isolation plate 102 of the present embodiment is provided with a notch 1022, the siphon structure is formed by installing a square siphon tube 105 crossing the notch 1022, the siphon tube 105 is connected and fixed with the periphery of the notch 1022 in a watertight manner, in order to avoid water overflowing from the notch at the top end of the siphon tube 105, the top end of the siphon tube 105 can be designed to be not lower than the top end of the notch as shown in fig. 7, and other sealing plates can be added for sealing. The inlet of siphon tube 105 is inserted into first cavity 1011 near its bottommost part, the outlet of siphon tube 105 is inserted into second cavity 1012 at a height not higher than the inlet, the inner cavity of siphon tube 105 forms first siphon runner 108, the highest height of runner is h1, and height h1 is not higher than overflow height h. Also, to ensure that the first siphon flow passage 108 is filled quickly with water, the flow rate through the first siphon flow passage 108 is designed to be smaller than the flow rate into the water inlet 1013.

Since the upper portion of the partition plate 102 is completely opened, the design flow rate overflowing across the partition plate 102 can be much larger than the inflow rate entering from the water inlet 1013, so the present embodiment does not need to consider the flow rate Q2 overflowing from the first chamber 101 to the second chamber 1012, and thus only the following condition needs to be satisfied:

Q1＝Q3

Q1>Q4

the liquid entering the first cavity 1011 from the water inlet 1013 can be smoothly discharged to the second cavity 1012 after the water level reaches the overflow height h, and smoothly discharged out of the container 101 from the water outlet 1014 provided at the bottom of the second cavity 1012, so that the water level stored in the first cavity 1011 is not higher than the overflow height h due to accumulation in the container 101. In practice, further design verification using experimentation is also required.

Fig. 8 shows an example 3 of a device 10 for dosing solid additives, which differs from the above-described example 2 mainly in the design: the siphon structure 104 is composed of a thin wall 105' which is formed by enclosing one section of the isolation plate 102 and watertight, a gap for entering water is arranged between the thin wall 105' and the bottom of the container 101, a first siphon flow passage is formed by the gap between the thin wall 105' and the isolation plate 102, and the height of the highest point of the flow passage is h1. In addition, a pipe column 106 with a central through hole is formed by protruding the bottom wall of the second cavity 1012, the central through hole is also a water outlet 1014 of the second cavity 1012, a cylindrical cap 107 is fixedly sleeved on the pipe column 106, gaps are formed between the cylindrical cap 107 and the bottom wall of the second cavity 1012 as well as between the cylindrical cap 107 and the pipe column 106, the gaps are communicated with the central through hole to form a second siphon flow passage 109, and the highest point height h2 of the second siphon flow passage 109 is smaller than the highest point height h1 of the first siphon flow passage 108. In this way, a predetermined amount of liquid additive, such as disinfectant, may be stored in the second chamber 1012, mixed with the water having a predetermined concentration of solid additive from the first chamber 101, and then discharged from the container 101 through the central through hole. Further, independent covers may be provided on the upper ends of the first cavity 1011 and the second cavity 1012, respectively, and the two cavities may be opened independently to add solid additives or liquid additives.

As shown in fig. 8, in this embodiment, the aperture of the water inlet 1013 is d1, the aperture length is l1, the aperture of the central through hole of the pipe column 106 is d3, the aperture length is l3, the outer diameter of the pipe column 106 is d5, the aperture of the inner cavity of the tubular cap 107 is d6, and the calculation formula of the water flow Q3 discharged from the container 101 by the second cavity 1012 is as follows:

Q3＝＝μA(2gH)^(1/2)

calculating the Q3 according to the nozzle outflow flow, wherein mu=0.82 and the water outlet cross section area A=3.14 (d 3≡2)/4; the H is the water head difference at two ends of the water outlet, namely the center through hole length l3 of the tubular column 106;

a tubular column; in addition, the cross-sectional area of the flow passage formed by the gap between the cylindrical cap 107 and the pipe column 106 is designed to be greater than or equal to the cross-sectional area of the central through hole, as follows:

(3.14*d6^2/4-3.14*d5^2/4)≧(3.14*d3^2/4)

from the above calculation formulas and the calculation formula of Q1, q1=q3 equation, the dimensional constraint relation between the column 106 and the tubular cap 107 can be obtained. By adopting the experimental verification design, the liquid entering the first cavity 1011 from the water inlet 1013 can be ensured to be smoothly discharged to the second cavity 1012 after the water level reaches the overflow height h, and the liquid can be smoothly discharged out of the container 101 from the central through hole of the pipe column 106, so that the water storage level of the first cavity 1011 is not higher than the overflow height h due to accumulation in the container 101.

As shown in fig. 9, a water inlet system includes an electromagnetic inlet valve 1 connected to a water inlet 1013 of a container 101, and the other end of the electromagnetic inlet valve 1 is connected to a water source. When the electromagnetic water inlet valve 1 is opened in operation, water enters one end of the first cavity 1011 from the water inlet 1013, enters the storage box 103 through the structure of water inlet and outlet at the front side of the storage box 103, contacts with solid additives in the storage box 103, and enters the other side of the first cavity 1011 far away from the water inlet 1013 from the structure of water inlet and outlet at the rear side of the storage box 103. After the water level gradually rises for a certain time, the water level reaches the overflow height h of the isolation plate, and water flows from the first cavity 1011 to the second cavity 1012 and is discharged out of the container through the water outlet 1014 of the second cavity 1012. Meanwhile, since the sectional area of the inner cavity of the siphon tube 105 is designed to be much smaller than the sectional area of the inner hole of the water inlet 1013, the inflow of water from the water inlet 1013 is larger than the overflow flow through the siphon tube 105, and the water flow rapidly fills the siphon flow passage and flows out to the second cavity 1012 through the overflow structure of the partition plate. Since the height of the flowing water of the first chamber 1011 is continuously maintained at the height h while being in contact with the solid additive inside the storage box 103, the water flow contains a set concentration of the solid additive and is continuously maintained. The electromagnetic water inlet valve 1 is closed, and the stored water of the first cavity 1011 and the storage box 103 is totally sucked into the second cavity 1012 and discharged out of the container through the water outlet 1014 due to the siphon effect of the siphon structure 104, so that the phenomenon that the concentration of solid additives is too high at the initial stage of opening the electromagnetic water inlet valve and adverse effects and waste are caused because solid additives are soaked and dissolved for a long time is avoided. In order to better control the flow rate of the water flow entering the first cavity 1011 and avoid the phenomena of unstable water inflow, a pressure reducing valve 4 is preferably arranged between the electromagnetic water inlet valve 1 and the water source, the pressure reducing valve 4 and the electromagnetic water inlet valve 1 can be designed into a whole, and the pressure reducing valve 4 and the electromagnetic water inlet valve 1 are combined to stabilize the flow rate of the water flow entering the first cavity 1011, so that the contact time of the water flow and the solid additive can be better controlled, and the concentration of the solid additive can be better quantified.

Another water inlet system embodiment shown in fig. 10 further comprises a water discharge assembly 2 connected with the water outlet 1014 through a pipeline, wherein the water discharge assembly 2 is provided with a nozzle, and a solenoid valve 3 is arranged between the water outlet 1014 and the water discharge assembly 2. The electromagnetic valve 3 can open and close the water flow of the second cavity to the nozzle of the drainage assembly for drainage.

The water inlet system is designed and calculated by adding local flow resistance of a valve, a nozzle and the like and straight pipe section flow resistance of a hose at the water inlet end and the water outlet end and further combining pipeline on-way resistance and local resistance, so that the liquid entering the first cavity 1011 from the water inlet 1013 can be ensured to overflow to the second cavity 1012 after the water level height exceeds the height h of the isolation plate 102, and then smoothly discharged out of the container 101 from the water outlet 1014 arranged at the bottom of the second cavity 1012 without accumulating in the container 101.

Fig. 11 shows a washing apparatus, such as a washing machine, comprising the water inlet system of the above embodiment and a wash bowl 5 receiving the water discharged from the second chamber 1012, the solid additive stored in the cartridge 103 being constituted by halogenated hydantoin compounds which emit hypohalous acid by contact with water. After the washing machine is electrified, the electromagnetic water inlet valve 1 is used for water inlet, the set siphon structure outflow height h is used for controlling the contact volume of halogenated hydantoin compounds and water in the storage box 103, and then the hypohalous acid concentration of liquid flowing out of the second cavity 1012 is controlled.

Specifically, according to the laundry amount and/or cloth quality and/or turbidity and/or water inlet temperature and/or water quality in the washing drum, and a selected washing program, the washing machine automatically calculates the required water inlet time, the electromagnetic water inlet valve is controlled to be full within 3-5min under the condition that the flow rate of the electromagnetic water inlet valve is controlled to be 8L/min, the washing water is generally changed between 20L and 40L, the water inlet is stored in the first cavity 1011 to the set same water level to soak the halogenated hydantoin compound of the storage box 3, specifically, the bottom, the left side and the right side of the storage box 103 are watertight sealed with the first cavity 1011, the front side and the rear side of the storage box 103 are provided with hole structures capable of allowing water to pass through only from the front side and the rear side of the storage box 103, the halogenated hydantoin compound with a certain set height (h) forms a submerged state, and the flowing water continuously flows to be contacted. Therefore, as disclosed, the solid additive composed of halogenated hydantoin chemical is decomposed by contact with water, and hypochlorous acid (hypohalous acid) having a bactericidal function is gradually dissolved and precipitated. Thus, the sterilizing water having the above-mentioned hypochlorous acid concentration is introduced into the second chamber 1012 through the siphon structure 104, and is discharged to the washing tub 5 for washing.

The results of measuring the change in the water level of the first chamber 1011 and the change in the hypochlorous acid concentration during water supply are shown in fig. 12 (a) and (b). The hypochlorous acid concentration shown in fig. 12 (b) is not the concentration in the first chamber 1011 but the concentration at the time of finally discharging from the second chamber 1012 and flowing into the washing tub 5. With respect to fig. 12 (a), point a in the drawing shows the bottom position of the first chamber 1011 ("0" level), and when water continues to be supplied to the first chamber 1011 to a level exceeding the overflow height h of the siphon structure 104, water starts to drain from the siphon flow path and rapidly fills the siphon flow path, and at this time, the water level rises to the height position B shown in fig. 12 (a) and remains constant until water supply is stopped, i.e., point C shown in fig. 12 (a) rapidly drops to the bottom position ("0" level). On the other hand, the hypochlorous acid concentration is at point B, which is stored at the level of the first chamber 1011 up to the height h, and some hypochlorous acid released from the solid halogenated hydantoin compound continues to diffuse into the stored water to reach about 1 (ppm) peak, and starts to be introduced into the second chamber 1012 through the siphon structure 104 and discharged. Then, since the subsequent influent water directly passes through the fixed volume of solid halogenated hydantoin compound, the contact time is constant but slightly short, the concentration is rapidly reduced and stabilized at about 0.6 (ppm) until the point C where the electromagnetic water inlet valve stops the influent water, at this time, the water stored in the first cavity 1011 is completely emptied by the siphon effect of the siphon structure 104, and the water containing halogenated hydantoin compound concentration is not discharged. Therefore, the water inlet system can generate the sterilizing water with the required concentration, and avoid the problem that the concentration is too high, or the bad effect of damaging clothes or waste is caused due to long-term soaking of the solid halogenated hydantoin compound.

On the other hand, a transparent observation window may be disposed on the peripheral wall of the first cavity 1011 to observe the consumption of the solid halogenated hydantoin compound in the storage box 103, and when the solid halogenated hydantoin compound in the lower portion of the storage box 103 is hydrolyzed and ablated, the storage height of the solid in the storage box 103 gradually decreases to a minimum overflow height h possibly lower than the siphon flow channel. At this time, in order to ensure a stable hypochlorous acid-containing liquid concentration, the solid halogenated hydantoin compound may be timely replenished.

Fig. 13 shows a water heating apparatus, such as an intelligent toilet, comprising the water inlet system of the second embodiment and the electric heater 6 located between the electromagnetic valve 3 and the second cavity 1012, where the solid additive stored in the storage box 103 is a scale inhibitor such as silicon-phosphorus crystal. The electromagnetic water inlet valve 1 is electrified, the water pressure is controlled by a pressure reducing valve 4 arranged at the upstream of the electromagnetic water inlet valve 1, the water inlet flow of the electromagnetic water inlet valve 1 is stabilized, the contact volume of silicon-phosphorus crystals and water in the storage box 103 is controlled by the set overflow height h, and the concentration of the liquid silicon-phosphorus crystals flowing out of the second cavity 1012 can be controlled.

Similarly, as shown in fig. 14, when the water level of the first chamber 1011 is stored to reach the minimum overflow height h of the siphon flow path, i.e., point B, the concentration of the silicon-phosphorus crystals in the liquid reaches about 10 (ppm) peak value, and the silicon-phosphorus crystals are introduced into the second chamber 1012 through the siphon structure 104 and discharged. Then the concentration drops and stabilizes around 3 (ppm) with continuous water flow discharge until the electromagnetic water inlet valve stops the water inlet C point, at which time the water stored in the first cavity 1011 can be completely emptied by the siphon effect of the siphon structure 104. Thus, the water inlet system generates the scale inhibition water with the required concentration, the scale inhibition water flows into the electric heater 6 to heat, the accumulation of scale can be avoided, the efficiency of the electric heater is influenced, a pipeline is blocked, the water stored in the first cavity 1011 is completely emptied by the siphon effect, and the long-term soaking of the solid scale inhibitor, the over-high concentration, the bad use influence or the material waste caused by the over-high concentration can be avoided.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (11)

1. A device (10) for dosing solid additives, comprising a container (101), said container (101) being divided by a partition (102) into a first cavity (1011) and a second cavity (1012), across which a siphon structure (105, 105') spans, an inlet being inserted in the first cavity (1011) near its bottommost part and an outlet being inserted in the second cavity (1012) at a height not higher than the inlet; a first cavity (1011) containing the solid additive and provided with a water inlet (1013) for dissolving the solid additive from a water source; the isolation plate (102) has a height h from the first cavity (1011) to the second cavity (1012) for overflowing, and the highest point height h1 of the runner of the siphon structure (104) is not higher than the height h of overflowing, so that when the water level of the first cavity (1011) reaches the height h of overflowing, water containing a fixed amount of solid additive concentration continuously flows to the second cavity (1012) and is discharged outside the container (101) through a water outlet (1014) arranged in the second cavity (1012).

2. A device for dosing solid additives according to claim 1, characterized in that: the flow rate of the water source entering the first cavity (1011) is Q1, the flow rate of the water overflowing from the height h of the isolation plate (102) to the second cavity (1012) is Q2, the flow rate of the water discharged from the second cavity (1012) to the outside of the container (101) is Q3, the flow rate of the water conveyed to the second cavity (1012) through the flow channel of the siphon structure is Q4, and Q1=Q2+Q4=Q3; q1> Q4.

3. A device for dosing solid additives according to claim 1, characterized in that: the storage box (103) is accommodated in the first cavity (1011), the front wall area and the rear wall area which are not higher than the overflow height h along the water flow advancing direction of the storage box (103) are provided with structures which are communicated with the first cavity (1011) and can be used for discharging water, and two sides of the storage box (103) are connected with the inner wall of the first cavity (1011) in a fitting mode.

4. A device for dosing solid additives according to claim 1, characterized in that: the isolation plate (102) is provided with a gap (1022), the siphon structure is a siphon (105) which is watertight fixed on the gap (1022) and spans the isolation plate (102), and a first siphon runner (108) is formed in the inner cavity of the siphon (105).

5. A device for dosing solid additives according to claim 1, characterized in that: the second cavity (1012) is provided with a tubular column (106) with a central through hole and a tubular cap (107) sleeved on the top of the tubular column, and a gap between the inner wall of the tubular cap (107) and the outer wall of the tubular column (106) is communicated with the central through hole to form a second siphon runner (109).

6. The apparatus for dosing solid additives of claim 5, wherein: the highest point height h2 of the second siphon flow passage (109) is smaller than the highest point height h1 of the first siphon flow passage (108).

7. A water inlet system comprising a water inlet solenoid valve (1) upstream of a water inlet (1013) and a device for dosing solid additives according to any of claims 1-5.

8. The water intake system of claim 7, wherein: the water draining device further comprises a water draining assembly (2) connected to the second cavity (1012), and an electromagnetic valve (3) is further arranged between the second cavity (1012) and the water draining assembly (2).

9. A water inlet system according to claim 7 or 8, characterized in that: the upstream of the water inlet electromagnetic valve (1) is connected with a water source through a pressure reducing valve (4).

10. A washing apparatus comprising a water inlet system according to any one of claims 7-9, further provided with a washing cartridge (5) for receiving water discharged from a water outlet (1014) of the second chamber (1012) to the outside of said container (101).

11. A water heating apparatus comprising a water inlet system according to any one of claims 7-9, further provided with an electric heater (6) for heating water discharged from a water outlet (1014) of the second chamber (1012) to the outside of the container (101).