JP7197970B2 - Water supply device - Google Patents

Description

Embodiments of the present invention relate to water supply systems.

Conventionally, by locally reducing the cross-sectional area of a flow channel through which a liquid such as water flows, the pressure of the liquid passing through the flow channel is rapidly decompressed. Bubble generators are known. Such a microbubble generator can be incorporated into a water supply device such as a washing machine, for example, so that water containing microbubbles can be supplied to the washing machine or the like.

However, since the fine bubble generator is configured to reduce the diameter of the channel, that is, to narrow the channel, the flow rate of the liquid passing through the channel is greatly reduced. As a result, there has been a situation in which water supply time is extended in the case where the micro-bubble generator is incorporated as compared to the case where the micro-bubble generator is not incorporated.

JP 2012-40448 A

Therefore, a water supply device capable of suppressing a decrease in the amount of water supplied while generating fine air bubbles is provided.

The water supply device of the embodiment includes a water supply valve connected to an external water supply source, at least two flow paths downstream of the water supply valve and provided in parallel, and at least one flow path among the flow paths. a microbubble generator that is provided in a channel and locally reduces the cross-sectional area of the channel to generate microbubbles in water passing through the channel , wherein at least one of the plurality of channels One channel is a bypass channel in which the microbubble generator is not provided.
In addition, the water supply device of the embodiment includes a water supply valve connected to an external water supply source, a water supply valve connected to the external water supply source, and at least two water supply valves downstream of the water supply valve and provided in parallel. and a microbubble generator that generates microbubbles in water passing through the flow path by locally reducing the cross-sectional area of the flow path, wherein the microbubble generator is continuous and a protruding portion protruding from the inner peripheral surface of the front flow channel inside the main body toward the center of the cross section of the flow channel, and , in each of the at least two channels.

Sectional drawing which shows schematically the water supply apparatus by 1st Embodiment FIG. 2 is a cross-sectional view showing an enlarged periphery of a micro-bubble generator in the water supply device according to the first embodiment. FIG. 2 is an enlarged cross-sectional view of the water supply device according to the first embodiment taken along the line X3-X3 of FIG. 2; Sectional drawing which shows schematically the water supply apparatus by 2nd Embodiment Sectional drawing which shows schematically the water supply apparatus by 3rd Embodiment Sectional drawing which shows schematically the water supply apparatus by 4th Embodiment Sectional view schematically showing an example in which the water supply device according to the fifth embodiment is applied to a water injection device for a washing machine Sectional drawing which shows schematically the water supply apparatus by 6th Embodiment A diagram showing an enlarged cross section along line X9-X9 in FIG. 8 for the water supply device according to the sixth embodiment. Sectional drawing which shows schematically the water supply apparatus by 7th Embodiment A diagram showing an enlarged cross section along line X11-X11 in FIG. 10 for the water supply device according to the seventh embodiment.

A plurality of embodiments will be described below with reference to the drawings. In addition, the same code|symbol is attached|subjected to the substantially same element in each embodiment, and description is abbreviate|omitted.

(First embodiment)
First, a first embodiment will be described with reference to FIGS. 1 to 3. FIG.
A water supply device 1 (hereinafter referred to as a first water supply device 1) in the first embodiment is for supplying water to a device to which water is to be supplied. The first water supply device 1 is used by being connected to a device to be supplied with water or incorporated in a device to be supplied with water. Devices to which water is to be supplied include, but are not limited to, washing machines, dishwashers, warm water toilet seats, water servers, water heaters, electrolyzed water generators, and the like.

The 1st water supply apparatus 1 is provided with the water supply valve 11, the inlet side flow path 12, several outlet side flow paths 21 and 31, and the micro-bubble generator 40, as shown in FIG. In the case of this embodiment, the 1st water supply apparatus 1 is provided with the two outlet side flow paths 21 and 31. As shown in FIG. The water supply valve 11 is provided between the inlet-side channel 12 and the two outlet-side channels 21 and 31, and opens and closes between the inlet-side channel 12 and the outlet-side channels 21 and 31. do. The water supply valve 11 may be composed of an electromagnetic valve that can be controlled to open and close by an electric signal, or may be composed of a manual valve that is opened and closed by manual operation. The inlet-side channel 12 is connected to an external water supply source, such as a water faucet, through a hose (not shown). That is, the water supply valve 11 is connected to an external water supply source via the inlet-side channel 12 and a hose (not shown).

The outlet-side channels 21 and 31 are provided on the outlet side, that is, downstream side of the water supply valve 11 and are arranged in parallel. At least one of the two outlet-side channels 21 and 31 is provided with a microbubble generator 40 . In the case of this embodiment, the fine bubble generator 40 is provided in one of the outlet-side channels 21 and 31 in the outlet-side channel 21 . In other words, the micro-bubble generator 40 is not provided in the other outlet-side channel 31 .

In the present embodiment, the one of the outlet-side channels 21 and 31 provided with the microbubble generator 40 is referred to as the microbubble water supply channel 21 . In addition, one of the outlet-side channels 21 and 31 in which the fine bubble generator 40 is not provided is referred to as a bypass channel 31 . In this case, the bypass channel 31 is branched from the microbubble water supply channel 21 on the downstream side of the water supply valve 11 . The inner diameter of the bypass channel 31 is smaller than the inner diameter of the fine bubble water supply channel 21 . That is, the area through which water can pass in the bypass channel 31 is smaller than the area through which water can pass in the microbubble water supply channel 21 .

The micro-bubble generator 40 is for causing micro-bubbles to be included in liquid such as tap water passing through the inside. The microbubble generator 40 is made of synthetic resin, for example, and formed in a cylindrical shape as a whole. The micro-bubble generator 40 has a body portion 41 and a projecting portion 42, as shown in FIG. The body portion 41 has a constricted portion 411 and a straight portion 412 inside.

The constricted portion 411 and the straight portion 412 form one continuous flow path. The narrowed portion 411 is provided on the upstream side of the straight portion 412, that is, on the inlet side. The straight portion 412 is on the downstream side with respect to the narrowed portion 411 .

The narrowed portion 411 has a shape in which the inner diameter decreases from the input side of the fine bubble generator 40 toward the output side, that is, a so-called conical tapered tubular shape in which the cross-sectional area of the flow path, that is, the inner diameter, gradually decreases continuously. formed. The straight portion 412 is formed in a cylindrical, so-called straight tubular shape in which the cross-sectional area of the flow path, that is, the inner diameter does not change.

The projecting portion 42 is located inside the main body portion 41 and is provided in the middle of the straight portion 412 in the longitudinal direction. The protruding portion 42 locally reduces the cross-sectional area through which the liquid can pass in the straight portion 412 to generate microbubbles in the liquid passing through the straight portion 412 . In the case of this embodiment, the straight portion 412 is provided with a plurality of, in this case four, projecting portions 42 as shown in FIG. It is

Each protruding portion 42 is formed of a rod-shaped member with a pointed end, and protrudes from the inner peripheral surface of the straight portion 412 toward the center of the cross section of the straight portion 412 . The protruding portions 42 are arranged in a state of being spaced apart from each other at equal intervals of 90° in the circumferential direction of the cross section of the straight portion 412 . In the case of this embodiment, each protruding portion 42 is formed integrally with the body portion 41 that constitutes the narrowed portion 411 and the straight portion 412 . It should be noted that the projecting portion 42 does not necessarily have to be formed integrally with the body portion 41 and may be formed separately from the body portion 41 .

As shown in FIG. 3, the area S in which water can pass in the fine bubble generator 40, that is, the area S in which water can pass, is the area formed between the protrusions 42, that is, the dotted area in FIG. The water-passable area of the bypass 31 , that is, the cross-sectional area of the bypass 31 is smaller than the water-passable area S of the fine bubble generator 40 .

The microbubble generator 40 can be configured, for example, as follows. That is, in the case of the present embodiment, the microbubble generator 40 is provided at the outlet side of the microbubble water supply path 21, that is, at the downstream end, as shown in FIG. In the case of this embodiment, the body portion 41 is formed in a two-stage cylindrical shape having a so-called flange. The narrowed portion 411 side of the body portion 41 in the longitudinal direction is inserted from the downstream end portion of the fine bubble water supply path 21 . In this case, a male threaded portion 413 is formed on the outer peripheral surface of the body portion 41 . A female threaded portion 211 that can be fitted to the male threaded portion 413 is formed on the inner peripheral surface of the fine bubble water supply path 21 . By meshing the male screw portion 413 and the female screw portion 211, the micro-bubble generator 40 is detachably and firmly attached to the micro-bubble water supply path 21. As shown in FIG.

In addition, the mounting structure of the micro-bubble generator 40 to the micro-bubble water supply path 21 is not limited to the one described above. Further, the microbubble generator 40 does not necessarily have to be provided at the downstream end of the microbubble water supply path 21 , and may be provided in the middle of the microbubble water supply path 21 .

In this configuration, when water flows into the micro-bubble generator 40 from the narrowed portion 411 side, the cross-sectional area of the flow path is narrowed from the narrowed portion 411 to the straight portion 412, so that the flow velocity increases due to the so-called venturi effect of fluid dynamics. be done. Then, the high-speed flow collides with the projecting portion 42, resulting in a sudden drop in pressure. As a result, a large amount of air dissolved in water can be precipitated as fine bubbles.

Here, microbubbles are generally classified as follows according to the diameter of the bubble. For example, fine bubbles with a diameter of about 1 μm to 100 μm are called microbubbles. Fine bubbles with a diameter of about 50 nm to 1000 nm are called nanobubbles or ultrafine bubbles. These microbubbles and nanobubbles are collectively called fine bubbles. When the bubble diameter reaches several tens of nanometers, it becomes smaller than the wavelength of light and cannot be visually recognized, and the liquid becomes transparent. These microbubbles are known to have excellent ability to clean objects in liquid due to their properties such as large total interfacial area, slow floating speed, and high internal pressure.

For example, a bubble with a diameter of 100 μm or more rises rapidly in the liquid due to its buoyancy, bursts on the surface of the liquid and disappears, so the residence time in the liquid is relatively short. On the other hand, microbubbles with a diameter of less than 1 μm have a low buoyancy and therefore stay in the liquid for a long time. Also, for example, microbubbles shrink and finally collapse in a liquid to become even smaller nanobubbles. When the microbubbles are crushed, high-temperature heat and high pressure are generated locally, which destroys foreign substances such as organic substances floating in the liquid or adhering to objects. In this way, a high cleaning capacity is exhibited.

In addition, since the microbubbles are negatively charged, they tend to adsorb positively charged foreign matter floating in the liquid. Therefore, the foreign matter destroyed by the crushing of the microbubbles is adsorbed by the microbubbles and slowly rises to the surface of the liquid. Then, the liquid is purified by removing the foreign matters that have gathered on the surface of the liquid. Thereby, high purifying ability is exhibited. Nanobubbles, which have a smaller outer shape than microbubbles, exhibit higher cleaning performance.

The microbubble generator 40 of the present embodiment allows a liquid such as water to pass through the inside, so that the liquid contains microbubbles or fine bubbles with a diameter of several μm to 50 μm, nanobubbles with a diameter of several tens of nm or less, or A large amount of fine bubbles containing ultra-fine bubbles can be generated. In the following description, the water containing microbubbles that has passed through the microbubble generator 40 is referred to as microbubble water. Water that does not pass through the microbubble generator 40 and does not contain microbubbles is simply called tap water. In addition, the micro-bubble generator 40 is not limited to the above-described so-called venturi type.

Thus, the first water supply device 1 of the present embodiment includes the water supply valve 11 connected to the external water supply source, and the at least two outlet-side flow paths 21 downstream of the water supply valve 11 and provided in parallel. , 31 and a microbubble generator 40 . The microbubble generator 40 is provided in at least one of the channels 21 and 31, in this case, the outlet side channel 21 . The micro-bubble generator 40 locally reduces the cross-sectional area of the outlet-side channel 21 to generate micro-bubbles in the water passing through the outlet-side channel 21 .

According to this, the first water supply device 1 passes through the microbubble generator 40 to generate a large amount of microbubbles or fine bubbles with a diameter of several μm to 50 μm or nanobubbles or ultrafine bubbles with a diameter of several tens of nanometers or less. The microbubble water contained in the water can be supplied to the device to be supplied with water. In the device to be water-supplied by the first water-supplying device 1, the action of the microbubbles can be exhibited.

The microbubbles generated by the microbubble generator 40 have the function of enhancing the effect of the surfactant contained in the detergent. That is, in an aqueous solution in which a surfactant is dissolved, when the concentration of the surfactant exceeds a certain level, the hydrophobic groups of the surfactant gather together to form micelles to form aggregates of the surfactant. On the other hand, microbubbles have the effect of breaking the energetically stable state of aggregates due to the hydrophobic action of the surface of the microbubbles and dispersing each molecule of the surfactant. As a result, the molecularized surfactant can easily enter the gap between the object to be cleaned and the dirt, and as a result, the detergency of the detergent can be improved.

Therefore, for example, by using the first water supply device 1 in a device such as a washing machine or a dishwasher that cleans an object to be cleaned using a detergent, it is possible to improve the cleaning performance of the device. Further, for example, even if the first water supply device 1 is used in a device for washing an object to be washed without using a detergent, such as a warm-water toilet seat, the action of microbubbles can further improve the washing performance of the device. Furthermore, for example, by using the first water supply device 1 in a device whose main purpose is to supply water, such as a water server, a water heater, or an electrolyzed water generator, every time water is supplied, the fine bubble water Water supply lines are cleaned. As a result, it is possible to prevent dirt such as water scale from accumulating in the water supply path of the apparatus, and the water supply path of the apparatus can be kept clean. As a result, clean water can be supplied, and the frequency of cleaning the device can be reduced.

Here, the microbubble generator 40 is configured to narrow the flow path 21 . Therefore, in the outlet-side channel 21 in which the micro-bubble generator 40 is incorporated, the amount of water discharged from the outlet-side channel 21 is reduced compared to the configuration in which the micro-bubble generator 40 is not incorporated in the outlet-side channel 21. Resulting in. Therefore, in a configuration in which the micro-bubble generator 40 is simply incorporated in the outlet-side flow path 21, the water supply time is extended compared to a configuration in which the micro-bubble generator 40 is not incorporated.

Therefore, in this embodiment, at least one of the plurality of, in this case, two, outlet-side channels 21 and 31 is configured as a bypass channel in which the microbubble generator 40 is not provided. According to this, the amount of water supply from the micro-bubble water supply path 21 that has decreased due to the provision of the micro-bubble generator 40 can be compensated for by the water supply from the bypass 31 in which the micro-bubble generator 40 is not provided. As a result, it is possible to suppress a decrease in the amount of water supplied from the first water supply device 1 while supplying fine bubble water, and to ensure a sufficient amount of water supplied by the first water supply device 1 .

In this configuration, as the diameter of the bypass 31 increases, the amount of water passing through the bypass 31 also increases. As a result, the water pressure applied to the micro-bubble generator 40 becomes low, making it difficult to secure the ability of the micro-bubble generator 40 to generate microbubbles. On the other hand, in the present embodiment, the water flowable area in the bypass 31 is smaller than the water flowable area S in the fine bubble generator 40 . According to this, it is possible to prevent the water pressure applied to the micro-bubble generator 40 from being excessively lowered. As a result, while ensuring the amount of water supplied from the first water supply device 1 by the bypass 31, the performance deterioration of the micro-bubble generator 40 is suppressed, and the size and number of micro-bubbles generated from the micro-bubble generator 40 are sufficiently increased. can be secured to

(Second embodiment)
Next, a second embodiment will be described with reference to FIG.
A water supply device 2 (hereinafter referred to as a second water supply device 2) of the second embodiment includes two outlet-side flow paths 21, 21. As shown in FIG. A microbubble generator 40 is provided in each of the two outlet-side channels 21 , 21 . That is, the second water supply device 2 includes a microbubble water supply channel 21 instead of the bypass channel 31 in the first water supply device 1 shown in FIG. In other words, the second water supply device 2 has two outlet-side channels 21 , and all the outlet-side channels 21 are provided with the microbubble generators 40 .

In this case, the two outlet-side flow paths 21 are formed with the same inner diameter. In other words, the two outlet-side channels 21 have the same area through which water can pass, and therefore the flow rate through the two outlet-side channels 21 is the same. It should be noted that, like the first water supply device 1, the second water supply device 2 is also connected to or incorporated in, for example, a washing machine, a dishwasher, a warm water toilet seat, a water server, a water heater, an electrolyzed water generator, or the like. used for

According to this, the tap water supplied to the inlet-side channel 12 passes through the micro-bubble generators 40 provided in each of the two outlet-side channels 21, 21 to produce fine particles containing micro-bubbles. It is supplied as bubbly water. That is, microbubble water is supplied from each of the two outlet-side channels 21 . Therefore, water containing a larger amount of microbubbles can be supplied as compared with the configuration in which one microbubble generator 40 is provided as in the first embodiment. Moreover, by providing the two microbubble water supply paths 21, the amount of water reduced by the microbubble generator 40 can be compensated for. As a result, it is possible to suppress a decrease in the amount of water supplied from the second water supply device 2 while supplying fine bubble water, and to ensure a sufficient amount of water supplied by the second water supply device 2 .

(Third embodiment)
Next, a third embodiment will be described with reference to FIG.
The water supply device 3 of the third embodiment (hereinafter referred to as the third water supply device 3) is a combination of the first water supply device 1 of the first embodiment and the second water supply device 2 of the second embodiment. . That is, the third water supply device 3 has three outlet-side flow paths 21 , 21 , 31 . Two of the three outlet-side flow paths 21, 21, 31 are microbubble water supply paths 21, 21 provided with microbubble generators 40, respectively. Also, one of the three outlet-side flow paths 21, 21, 31 is a bypass 31 in which the microbubble generator 40 is not provided. Also by this, the same effect as each of the above embodiments can be obtained.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG.
A water supply device 4 (hereinafter referred to as a fourth water supply device 4) of the fourth embodiment includes three outlet-side flow paths 21, 21, 21. As shown in FIG. A micro-bubble generator 40 is provided in each outlet-side channel 21 . That is, the fourth water supply device 4 further includes a microbubble water supply channel 21 instead of the bypass channel 31 in the third water supply device 3 shown in FIG. In other words, the fourth water supply device 4 has three outlet-side flow paths 21, 21, 21, and all the outlet-side flow paths 21, 21, 21 are provided with the microbubble generators 40. . Also by this, the same effect as each of the above embodiments can be obtained.

(Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIG.
A water supply device 5 (hereinafter referred to as a fifth water supply device 5) of the fifth embodiment includes two outlet-side flow paths 21 and 22. As shown in FIG. The inner diameter of the outlet-side channel 21 and the inner diameter of the outlet-side channel 22 are different. In this case, the inner diameter of the outlet-side channel 22 is smaller than the inner diameter of the outlet-side channel 21 . That is, the cross-sectional area, ie, the water-permeable area, of the outlet-side channel 22 is smaller than the cross-sectional area, ie, the water-permeable area, of the outlet-side channel 21 .

The exit-side channel 21 having a large inner diameter is provided with the microbubble generator 40 as in the above-described embodiments. In addition, a microbubble generator 50 different from the microbubble generator 40 of each of the above-described embodiments is provided in the outlet-side channel 22 having a small inner diameter. In this case, the two outlet-side channels 21 and 22 are microbubble water supply channels provided with microbubble generators 40 and 50, respectively.

The microbubble generator 50 is a reduced version of the microbubble generator 40 . That is, the microbubble generator 40 provided in the outlet-side channel 21 with a large inner diameter has a higher ability to generate microbubbles than the microbubble generator 50 provided in the outlet-side channel 22 with a small inner diameter. Therefore, the microbubble water supplied from the outlet-side channel 21 with a large inner diameter contains a large amount of microbubbles compared to the micro-bubble water supplied from the outlet-side channel 22 with a small inner diameter.

Also, the amount of microbubble water supplied from the outlet-side channel 21 with a large inner diameter is greater than the amount of micro-bubble water supplied from the outlet-side channel 21 with a large inner diameter. In this case, of the outlet-side flow paths 21 and 22, the outlet-side flow path 21 having a large inner diameter is referred to as the large-volume micro-bubble water supply path 21, and the outlet-side flow path 22 having a small inner diameter is referred to as the low-volume micro-bubble water supply path 22. called.

The fifth water supply device 5 is suitable for application to a water injection device in a washing machine, for example. 7 further includes a powder detergent case 61 and a liquid detergent case 62 in addition to the fifth water supply device 5 . The powder detergent case 61 is provided at the discharge destination of the large amount side microbubble water supply path 21 . Powder detergent is accommodated in the powder detergent case 61 . The powder detergent housed in the powder detergent case 61 dissolves in the microbubble water discharged into the powder detergent case 61 from the large amount side microbubble water supply passage 21 . The microbubble water in which the powdered detergent is dissolved flows out from the outlet 611 of the powdered detergent case 61 into a washing tub (not shown).

Also, the liquid detergent case 62 is provided at the discharge destination of the small amount side microbubble water supply path 22 . The liquid detergent case 62 has an outlet 621 configured, for example, in a siphon structure. The liquid detergent contained in the liquid detergent case 62 dissolves in the microbubble water discharged into the liquid detergent case 62 from the small amount side microbubble water supply passage 22 . When the inside of the liquid detergent case 62 is filled to a predetermined water level, the microbubble water in which the liquid detergent is dissolved flows out from the outlet 621 according to the siphon principle and is poured into the washing tub (not shown).

In a normal washing operation, powder detergent is put into the powder detergent case 61 or liquid detergent is put into the liquid detergent case 62 . In this case, the micro-bubble water that has flowed into the powder detergent case 61 through the large amount side micro-bubble water supply path 21 and the micro-bubble water that has flowed into the liquid detergent case 62 through the small amount side micro-bubble water supply path 22. flows out from the outlet portions 611 and 621 together with the detergent stored in the respective cases 61 and 62 . The microbubble water flowing out from the outlets 611 and 621 carries the detergent contained in the cases 61 and 62 and finally mixed in the washing tub of the washing machine (not shown).

Here, liquid detergent is easier to dissolve in water than powder detergent. Therefore, the liquid detergent stored in the liquid detergent case 62 can be transported into the washing tub with a smaller amount of water than the powder detergent in the powder detergent case 61 . In this embodiment, the high-volume side microbubble water supply channel 21 is connected to a powder detergent case 61 that requires a large amount of water to transport the detergent. On the other hand, the small amount side microbubble water supply path 22 is connected to a liquid detergent case 62 capable of carrying the detergent with a small amount of water. Therefore, according to the present embodiment, an appropriate amount of microbubble water can be supplied to the cases 61 and 62 according to the type of detergent stored in the cases 61 and 62 . As a result, the cleaning ability of the detergent can be improved by the fine air bubbles, and the detergent stored in each of the cases 61 and 62 can be efficiently transported to the washing tub.

(Sixth embodiment)
Next, a sixth embodiment will be described with reference to FIGS. 8 and 9. FIG.
The water supply device 6 (hereinafter referred to as the sixth water supply device 6) of the sixth embodiment includes, in addition to the water supply valve 11 and the inlet side channel 12, one outlet side channel 23 and a microbubble generator unit 70. I have. The outlet-side channel 23 is provided downstream of the water supply valve 11 . The fine bubble generator unit 70 is provided at the downstream end portion of the outlet-side channel 23 . In this case, the outlet-side channel 23 is also called a microbubble water supply channel 23 .

The micro-bubble generator unit 70 includes a plurality of micro-bubble generators 80 (two in this case) and a mounting member 71 . The micro-bubble generator 80 is formed, for example, in a two-stage cylindrical shape having a flange. The micro-bubble generator 80 has a narrowed portion 411, a straight portion 412, and a protruding portion 42, like the micro-bubble generator 40 of each of the above-described embodiments.

The mounting member 71 is a part for arranging a plurality of, in this case two, micro-bubble generators 80 in parallel in one micro-bubble water supply path 23 . As shown in FIG. 9, the mounting member 71 is, for example, formed in a tubular shape with an elongated hole shape or a circular or elliptical cross section. The mounting member 71 has two housing portions 711 inside.

Each accommodating portion 711 is formed by penetrating the mounting member 71 in a cylindrical shape having a stepped portion 712 . Each accommodation portion 711 is configured to accommodate one fine bubble generator 80 . In this case, each housing portion 711 is independent of each other. That is, the two housing portions 711 are not connected to each other. Therefore, each microbubble generator 80 is also spaced apart and not in contact with each other. In other words, there is almost no gap around each microbubble generator 80 , and the gap is filled with the mounting member 71 . Although details are not shown, the attachment member 71 and the fine bubble water supply path 23 are detachably attached to each other by a fastening member such as a so-called snap fit or a screw.

Similarly to the above embodiments, the sixth water supply device 6 also generates fine bubble water while suppressing a decrease in the amount of water by the micro-bubble generator 80 to ensure a sufficient amount of water supply by the sixth water supply device 6. can do.
Further, the sixth water supply device 6 is configured to have one microbubble water supply channel 23 and does not have a plurality of outlet side water channels. For this reason, the sixth water supply device 6 is more suitable for a single water supply destination.

Furthermore, there is almost no gap around each microbubble generator 80 and the gap is filled with the mounting member 71 . According to this, part of the water applied to each micro-bubble generator 80 leaks from the gap between the micro-bubble generator 80 and the mounting member 71, and the water pressure applied to each micro-bubble generator 80 can be suppressed. Therefore, high water pressure can be applied to the microbubble generator 80, and as a result, microbubble water can be efficiently generated.

(Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIGS. 10 and 11. FIG.
A water supply device 7 of the seventh embodiment (hereinafter referred to as a seventh water supply device 7) includes a mounting member 72 instead of the mounting member 71 of the sixth embodiment. The mounting member 72 has two housing portions 721 inside. Each housing portion 721 is formed by penetrating the mounting member 72 in a cylindrical shape having a stepped portion 722 . Each housing portion 721 is configured to be able to house one fine bubble generator 80 .

In this case, each containing portion 721 communicates with each other. A gap G is formed around each fine bubble generator 80 . The cross-sectional area of the gap G, that is, the water-permeable area is smaller than the water-permeable area S in each microbubble generator 80 . A part of the water in the microbubble water supply path 23 is discharged from the seventh water supply device 7 through the gap G without passing through the microbubble generator 40 .

Similarly to the above embodiments, the seventh water supply device 7 also generates microbubble water while suppressing a decrease in the amount of water by the microbubble generator 80 to ensure a sufficient amount of water supply by the seventh water supply device 7. can do.
Moreover, the seventh water supply device 7 is configured to have one microbubble water supply channel 23, like the sixth water supply device 6, and does not have a plurality of outlet side water channels. Therefore, like the sixth water supply device 6, the seventh water supply device 7 is more suitable for supplying water to one place.

Furthermore, a gap G is formed around each fine bubble generator 80 . This gap G bypasses the water in the micro-bubble water supply path 23, that is, part of the water applied to the micro-bubble generator 40 without passing through the micro-bubble generator 80 and discharges it to the outside of the water supply device 7. forming a bypass. According to this, it is possible to suppress a decrease in the amount of water supplied from the seventh water supply device 7 while supplying fine bubble water, and to ensure a sufficient amount of water supplied by the seventh water supply device 7 .

Also, the water supply devices 1 to 7 of the above embodiments can be applied to at least one home appliance such as a washing machine, a dishwasher, a warm water toilet seat, a water server, a water heater, or an electrolyzed water generator. Devices to which each of the water supply apparatuses 1 to 7 can be applied are not limited to those described above, and can be applied to devices other than home electric appliances.

While several embodiments of the invention have been described above, these embodiments are provided by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

In the drawings, 1 is the first water supply device (water supply device), 2 is the second water supply device (water supply device), 3 is the third water supply device (water supply device), 4 is the fourth water supply device (water supply device), 5 is the second 5 water supply device (water supply device), 6 is the sixth water supply device (water supply device), 7 is the seventh water supply device (water supply device), 11 is the water supply valve, 21, 22, 23 is the outlet side flow path (flow path), 31 indicates an outlet-side channel (channel, bypass), and 40, 50, and 80 indicate microbubble generators.

Claims (5)

a water supply valve that is connected to a water faucet, which is an external water supply source, and that is configured by an electromagnetic valve that can be controlled to open and close by an electric signal ;
at least two flow paths downstream of the water supply valve and provided in parallel;
a microbubble generator that is provided in at least one of the channels and locally reduces the cross-sectional area of the channel to generate microbubbles in the water passing through the channel;
with
At least one of the plurality of channels is a bypass channel not provided with the microbubble generator,
water supply. The area through which water can pass in the bypass is smaller than the area through which water can pass in the microbubble generator,
The water supply device according to claim 1. a water valve connected to an external water supply;
at least two flow paths downstream of the water supply valve and provided in parallel;
a microbubble generator that generates microbubbles in water passing through the channel by locally reducing the cross-sectional area of the channel;
with
The microbubble generator includes a main body portion having a single continuous flow channel therein, and a protruding portion protruding from the inner peripheral surface of the flow channel of the main body portion toward the center of the cross section of the flow channel. , and provided in each of the at least two channels,
The two channels provided with the microbubble generators have different microbubble generation capabilities,
water supply. The microbubble generator is detachable from the channel,
The water supply device according to claim 3. 5. The water supply device according to any one of claims 1 to 4, which is applicable to at least one of a washing machine, a dishwasher, a warm water toilet seat, a water server, a water heater, and an electrolyzed water generator.

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