JP2021016601A - Bathroom washing apparatus - Google Patents

Abstract

To provide a bathroom washing apparatus capable of obtaining excellent washing capability even when pressure for supplying hot and cold water to a hot and cold water channel is low.SOLUTION: A bathroom washing apparatus A comprises: a bypass channel 30 that is connected to a hot and cold water channel 3 connected to a washing nozzle 2 and that enables hot and cold water, flowing through an upstream region in a hot and cold water flow direction with respect to a venturi part 4, to flow into a downstream region in the hot and cold water flow direction with respect to the venturi part 4 via a path around the venturi part 4; and channel switching means V2 capable of selectively switching between a state in which the hot and cold water in the hot and cold water channel 3 passes through the bypass channel 30 and a state in which the hot and cold water does not pass through the bypass channel.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bathroom cleaning device.

Specific examples of the bathroom cleaning device include those described in Patent Documents 1 to 4.
In the bathroom cleaning devices described in these documents, a cleaning nozzle is attached to the bottom of the bathtub, and a venturi portion (detergent mixing portion) is provided in the middle of the hot water flow path provided connected to the cleaning nozzle. The detergent supply path is branched and connected. When hot water flows through the hot water flow path, the detergent is smoothly supplied to the Venturi part due to the negative pressure generating action in the Venturi part, and the detergent mixed hot water is generated. This detergent mixed hot water is ejected from the washing nozzle toward the bathtub, and the bathtub is washed.

However, in the above-mentioned prior art, there is still room for improvement as described below.

That is, the Venturi portion has a large hot water flow resistance because its flow path is narrowed to a small diameter or a small width, and causes a large pressure loss. On the other hand, the hot water supply to the hot water flow path of the bathroom cleaning device is generally performed by using the tap pressure. Therefore, in the area where the water pressure is low, the momentum of the hot water ejected from the cleaning nozzle becomes weak due to the pressure loss in the venturi portion. With this, it is difficult to obtain excellent cleaning ability.

Japanese Patent No. 3171127 Japanese Patent No. 3509089 Japanese Unexamined Patent Publication No. 2009-60984 Japanese Patent No. 5239844

The present invention has been conceived under the above-mentioned circumstances, and it is possible to obtain excellent cleaning ability even when the hot water supply pressure to the hot water flow path is low. The challenge is to provide the equipment.

In order to solve the above problems, the following technical measures are taken in the present invention.

The bathroom cleaning device provided by the present invention is provided with a hot water flow path connected to a cleaning nozzle and a hot water flow path provided in the middle of the hot water flow path, and a detergent is mixed with the hot water flowing through the hot water flow path to prepare a detergent mixed hot water. A bathroom cleaning device including a venturi portion for generating, which bypasses the venturi portion with hot water that is connected to the hot water flow path and flows upstream of the venturi portion in the hot water flow direction. Selectively switch between a bypass flow path that allows the hot water to flow downstream of the Venturi portion in the hot water flow direction, and a state in which hot water in the hot water flow path passes through the bypass flow path and a state in which the hot water does not pass through the bypass flow path. It is characterized in that it is further provided with a flow path switching means capable of performing the above.

According to such a configuration, the following effects can be obtained.
First, when the hot water in the hot water flow path is set to pass through the bypass flow path, the hot water can flow to the cleaning nozzle in a form that bypasses the venturi portion having a large hot water flow resistance. Therefore, the pressure loss of the hot water flow at that time can be reduced, and even when the hot water supply pressure to the hot water flow path is relatively low, the hot water can be ejected from the washing nozzle with a strong force. In the bathroom cleaning process, when a large amount of hot water is passed through the venturi part to generate detergent mixed hot water and the detergent mixed hot water is ejected from the cleaning nozzle, the hot water ejection of the above-described embodiment using the bypass flow path is used. However, in other cases, it is possible to use the bypass flow path to eject hot water from the cleaning nozzle with a strong force. As a result, the cleaning ability can be enhanced as compared with the conventional technique. Further, even in an area where the water pressure is low, the bathroom cleaning device of the present invention can be appropriately used.
Secondly, according to the present invention, when hot water is passed through the bypass flow path and the amount of hot water flowing in the venturi portion is reduced, the negative pressure generating action in the venturi portion is also reduced. An on-off valve is usually provided in the path for supplying the detergent to the venturi portion, and when the detergent mixed hot water is not generated, the on-off valve is closed. Here, in the closed state of the on-off valve, a large negative pressure is generated in the venturi portion, and if this negative pressure acts on the on-off valve, the load acting on the rubber of the on-off valve, for example, the valve body becomes large. , There is a problem that the service life is shortened. On the other hand, according to the present invention, when hot water is passed through the bypass flow path, the negative pressure generating action of the venturi portion can be reduced, so that the above-mentioned problems can be appropriately eliminated or reduced. It becomes possible to do.

In the present invention, preferably, a detergent cleaning treatment for ejecting the detergent mixed hot water from the cleaning nozzle and a rinsing treatment for ejecting the non-detergent mixed hot water from the cleaning nozzle to eject the non-detergent mixed hot water are carried out in a predetermined procedure. It is configured to be.

According to such a configuration, the detergent cleaning treatment and the rinsing treatment are combined, which is more preferable in terms of enhancing the cleaning ability.

In the present invention, preferably, during the rinsing treatment, the hot water in the hot water flow path is configured to pass through the bypass flow path.

According to such a configuration, during the rinsing treatment, the non-detergent mixed hot water can be vigorously ejected from the washing nozzle, and the rinsing treatment capacity can be enhanced.

In the present invention, preferably, a plurality of cleaning nozzles are provided as the cleaning nozzles, and at the time of at least one of the detergent cleaning process and the rinsing process, the detergent mixed hot water or water or the detergent mixed hot water or water from each of the plurality of cleaning nozzles is used. The operation is such that the non-detergent mixed hot water is individually ejected with a time lag.

According to such a configuration, by using a plurality of cleaning nozzles, each cleaning nozzle is arranged so as to be close to the cleaning target area, and the detergent mixed hot water or the non-detergent mixed hot water is directed toward the cleaning target area with a strong force. Can be spouted. On the other hand, detergent mixed water or non-detergent mixed water can be individually ejected from a plurality of cleaning nozzles with a time lag, so that the momentum of the detergent mixed water or non-detergent mixed water ejected from each cleaning nozzle is not weakened. You can also do it. Therefore, it is more preferable for enhancing the cleaning ability.

In the present invention, preferably, at the time of at least one of the detergent cleaning treatment and the rinsing treatment, the detergent mixed hot water or the non-detergent mixed hot water is simultaneously ejected from each of the plurality of washing nozzles. It is supposed to be executed.

According to such a configuration, the following effects can be obtained.
That is, when the detergent mixed hot water or the non-detergent mixed hot water is ejected from each of the plurality of cleaning nozzles at the same time, the hot water is ejected in a manner different from the case where the hot water is ejected independently from each of the plurality of cleaning nozzles. Therefore, the method of spraying hot water to the area to be cleaned is not uniform, and this can be expected to have the effect of enhancing the cleaning ability.

In the present invention, preferably, in the initial stage of the detergent cleaning treatment, the hot water in the hot water flow path passes through the venturi portion without passing through the bypass flow path.

According to such a configuration, the non-detergent mixed hot water that has passed through the bypass flow path is prevented from being ejected from the cleaning nozzle at the initial stage of the detergent cleaning process, and the detergent cleaning process can be performed accurately.

In the present invention, preferably, in the latter stage of the detergent cleaning treatment, the hot water in the hot water flow path passes through the bypass flow path in a state where the supply of the detergent to the venturi portion is stopped, and the hot water flow It is configured to eject the detergent mixed hot water existing in the road from the washing nozzle.

According to such a configuration, the detergent mixed hot water remaining in the hot water flow path can be pushed out from the hot water flow path by the non-detergent mixed hot water that has passed through the bypass flow path in the latter stage of the detergent cleaning treatment. Therefore, it is possible to prevent the detergent mixed hot water from remaining in the hot water flow path after the detergent cleaning treatment is completed. Further, in the latter stage of the detergent cleaning treatment, it is possible to vigorously eject the detergent mixed hot water from the cleaning nozzle.

Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

It is a schematic explanatory drawing which shows an example of the bathroom cleaning apparatus which concerns on this invention. It is schematic explanatory drawing which shows the structure of the main part of the bathroom cleaning apparatus shown in FIG. (A) to (e) are time charts showing an example of operation processing executed in the bathroom cleaning apparatus shown in FIG. (A) to (e) are time charts showing other examples of operation processing executed in the bathroom cleaning apparatus shown in FIG. It is the schematic explanatory drawing which shows the other example of this invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

The bathroom cleaning device A shown in FIG. 1 is configured as a bathtub cleaning device for cleaning the bathtub 1. Specifically, this bathroom cleaning device A has two cleaning nozzles 2 (2A, 2B) attached to the bottom of the bathtub 1, branch flow paths 3a, 3b connected to these cleaning nozzles 2, and cleans. A hot water flow path 3 for supplying hot water to the nozzle 2, a venturi section 4 provided in the middle of the hot water flow path 3, a detergent supply path 6 for supplying liquid detergent from the detergent tank 5 to the venturi section 4. A bypass flow path 30 connected in parallel to the venturi unit 4 and a control unit 7 for executing operation control of each part of the bathroom cleaning device A are provided.

Hot water can be supplied to the hot water flow path 3 from a hot water supply device (not shown) or a hot water supply source such as a water pipe. The hot water flow path 3 is provided in the upstream portion of the hot water flow path 3, and has a hot water pouring on-off valve V0 and a flow rate adjustment for switching on / off of hot water supply to the venturi portion 4, the cleaning nozzle 2, and the like. A valve V1, a flow rate sensor S, an ejection switching valve V3 to which the branch flow paths 3a and 3b are connected, and the like are provided. The pouring on-off valve V0 is, for example, an electromagnetic on-off valve.
The ejection switching valve V3 is a direction switching valve, and the hot water supply to one of the cleaning nozzles 2A and 2B can be selectively switched. However, in the present embodiment, in addition to such a function, it is possible to switch and set a state in which both the cleaning nozzles 2A and 2B are simultaneously supplied with hot water.

As is well shown in FIG. 2, the venturi portion 4 has a throttle portion 41 in which both ends of the flow path 40 connected to the hot water flow path 3 are partially throttled, and a series connected to the throttle portion 41 so as to intersect the throttle portion 41. A passage 42 is provided, and a negative pressure is generated in the communication passage 42 when hot water flows through the throttle portion 41 at a high speed. The communication passage 42 forms a part of the detergent supply passage 6. Therefore, the action of the negative pressure causes the detergent to smoothly flow into the venturi portion 4 from the detergent supply path 6, and a detergent-mixed hot water in which the detergent and hot water are mixed is generated.
The detergent supply path 6 is provided with a detergent on-off valve Va for switching on / off of the detergent supply to the venturi portion 4. This detergent on-off valve Va is an electromagnetic on-off valve similar to the pouring on-off valve V0, and a valve body 82 facing the valve opening 80 and the valve seat 81 formed around the valve opening 80 is arranged in the valve chamber 83. In addition, the valve body 82 can be reciprocated by driving the solenoid 84. The valve body 82 has a rubber seal portion 82a that comes into face-to-face contact with the valve seat 81 when the valve is closed. According to the present embodiment, as will be described later, it is also possible to obtain an action of reducing the negative pressure generated in the venturi portion 4 from adversely affecting the rubber seal portion 82.

The bypass flow path 30 is for allowing hot water flowing in the upstream area in the hot water flow direction from the Venturi section 4 of the hot water flow path 3 to flow in the downstream area in the hot water flow direction from the Venturi section 4 in a form bypassing the Venturi section 4. It is a flow path of the above, and is connected to the hot water flow path 3 so as to be in parallel with the venturi portion 4. The bypass flow path 30 has a flow path diameter similar to that of the general portion of the hot water flow path 3, and is a flow path having a smaller hot water flow resistance than the venturi portion 4.
The bypass flow path 30 is provided with, for example, a bypass valve V2 using an electromagnetic on-off valve. The bypass valve V2 corresponds to an example of the flow path switching means according to the present invention, and by opening and closing the bypass valve V2, it is possible to switch between a state in which hot water flows through the bypass flow path 30 and a state in which it does not flow. In the configuration of the present embodiment, when the bypass valve V2 is opened and hot water flows through the bypass flow path 30, a small amount of hot water can also flow to the venturi portion 4.

The control unit 7 is configured by using a microcomputer or the like, and includes a switch operation unit (not shown) or the like. When a predetermined switch operation is performed or a predetermined predetermined time arrives, the control unit 7 causes the detergent cleaning process and the rinsing process to be executed in a predetermined procedure as described later. The detergent cleaning treatment is performed by ejecting detergent mixed hot water from the cleaning nozzle 2. The rinsing treatment includes a preliminary rinsing treatment performed before the detergent cleaning treatment and a main rinsing treatment performed after the detergent cleaning treatment. In either case, the non-detergent mixed hot water is ejected from the washing nozzle 2. Be done.

Next, an example of the operation processing in the bathroom cleaning device A described above will be described with reference to the time chart of FIG. 3, and its operation will be described.

As shown in FIG. 3A, the bathtub cleaning is performed in the order of the preliminary rinsing treatment, the detergent cleaning treatment, and the main rinsing treatment. The opening / closing operations of the pouring on-off valve V0, the detergent on-off valve Va, the bypass valve V2, and the ejection switching valve V3 at the time of each of these treatments are as shown in FIGS. 3 (b) to 3 (e). In addition, "2A" of the figure (e) shows the hot water supply state to a washing nozzle 2A, and "2B" shows a hot water supply state to a washing nozzle 2B. This point is the same as in FIG. 4 (e) described later.

In the bathtub cleaning of the time chart shown in FIG. 3, the bypass valve V2 is in the open state during the preliminary rinsing process and the main rinsing process, and passes through the bypass flow path 30 to perform the cleaning nozzle 2 (2A and). Hot water is supplied to / or 2B). When a large amount of hot water passes through the venturi portion 4 and is supplied to the cleaning nozzle 2, the pressure loss in the venturi portion 4 becomes large, and the momentum of the hot water ejected from the cleaning nozzle 2 may be weakened. On the other hand, according to the present embodiment, such a possibility can be eliminated and hot water (non-detergent mixed hot water) can be ejected from the washing nozzle 2 with a strong force. Therefore, the rinsing processing capacity and, by extension, the bathtub cleaning capacity can be made excellent. Even in an area where the hot water supply pressure to the hot water flow path 3 is low, the bathroom cleaning device A can be used appropriately.

Since the cleaning nozzles 2 are provided with two cleaning nozzles 2A and 2B, it is possible to arrange each of the cleaning nozzles 2A and 2B close to the inner wall surface of the bathtub 1. Therefore, it is more preferable for the hot water ejected from each of the cleaning nozzles 2A and 2B to be strongly applied to the inner wall surface of the bathtub 1. On the other hand, as shown in FIG. 3E, the ejection switching valve V3 is in a state where hot water is ejected independently from each of the two cleaning nozzles 2A and 2B, and hot water is simultaneously ejected from both the two cleaning nozzles 2A and 2B. It is controlled to switch between the ejection state and the setting. If hot water is ejected independently from each of the two cleaning nozzles 2A and 2B, it is possible to prevent the momentum of the ejection of the hot water from being weakened. Further, when hot water is ejected from both of the two cleaning nozzles 2A and 2B at the same time, the hot water is ejected in a manner different from the case where the hot water is ejected from each of the two cleaning nozzles 2A and 2B independently. Therefore, the method of injecting hot water to the inner wall surface of the bathtub 1 is not uniform, and this also can be expected to have an effect of enhancing the cleaning ability.

As shown in FIG. 3A, in the detergent cleaning process, the operation of ejecting the detergent mixed hot water from the cleaning nozzle 2 is repeated a plurality of times after a predetermined interval (initial P1, middle P3, late P2). ). During the interval, decomposition / peeling of dirt by the detergent mixed hot water progresses. In the initial P1 of the detergent cleaning process described above, both the pouring on-off valve V0 and the detergent on-off valve Va are opened in a state where the bypass valve V2 is closed and hot water does not pass through the bypass flow path 30. .. According to such a configuration, it is possible to prevent the non-detergent mixed hot water that has passed through the bypass flow path 30 from being ejected from the cleaning nozzle 2 at the initial P1 of the detergent cleaning process, and to appropriately perform the detergent cleaning process. is there.

On the other hand, in the latter stage P2 of the detergent cleaning treatment, the detergent on-off valve Va is closed and the bypass valve V2 is open, and the detergent supply to the venturi portion 4 is stopped, and the bypass flow path 30 is reached. Hot water is flowing. According to such a configuration, among the hot water flow paths 3, the detergent mixed hot water remaining in the hot water flow path 3 on the downstream side of the venturi portion 4 has passed through the bypass flow path 30 (non-detergent mixed hot water). Is pushed out from the cleaning nozzle 2. Therefore, it is possible to prevent the detergent mixed hot water from remaining in the hot water flow path 3 at the end of the detergent cleaning treatment. Of course, in the latter stage P2 of the detergent cleaning treatment, the detergent mixed hot water can be vigorously ejected from the cleaning nozzle 2.

During the rinsing process and the latter period P2 of the detergent cleaning process, the detergent on-off valve Va is closed and the bypass valve V2 is open, as shown in FIGS. 3 (c) and 3 (d). ing. Here, when the bypass valve V2 is opened and hot water flows through the bypass flow path 30, a large negative pressure is not generated in the venturi portion 4. When the detergent on-off valve Va is in the closed state and receives negative pressure from the venturi portion 4, a large load acts on the rubber seal portion 82a of the valve body 82, and the service life thereof is shortened. On the other hand, according to the present embodiment, such a situation can be appropriately avoided.

The bathroom cleaning device A of the present embodiment may be configured to execute the operation process shown in FIG. 4 in addition to or instead of the operation process shown in FIG.
The operation process shown in FIG. 4 is the same as the operation process shown in FIG. 3 except that the operation in the range indicated by the reference numeral P3 in FIG. 3 is omitted, and the description thereof will be omitted because it is duplicated.

FIG. 5 shows another embodiment of the present invention (elements that are the same as or similar to the embodiment are designated by the same reference numerals as those of the embodiment).
In the embodiment shown in FIG. 5, a bypass switching valve V2'as a three-way valve is provided at the connection point between the hot water flow path 3 and the bypass flow path 30. By switching the flow path by the bypass switching valve V2', hot water can be selectively flowed to one of the venturi portion 4 and the bypass flow path 30, and the same operation as that of the above embodiment can be obtained. ..
As understood from the present embodiment, as the flow path switching means according to the present invention, a three-way valve or the like may be used instead of the on-off valve provided in the bypass flow path.

The present invention is not limited to the contents of the above-described embodiments. The specific configuration of each part of the bathroom cleaning device according to the present invention can be variously redesigned within the scope intended by the present invention.

In the above-described embodiment, two cleaning nozzles are provided, but the number is not limited to this, and one may be used, and the number may be three or more.
The cleaning target of the bathroom cleaning device according to the present invention is not limited to the bathtub, and other than this, for example, the floor surface, the side wall surface, the ceiling, the bathtub lid, and the like of the bathroom can be used. Of the plurality of cleaning nozzles, some of the cleaning nozzles may be used for cleaning the bathtub, and the other part may be used for cleaning the part other than the bathtub.
The number of executions of the detergent cleaning treatment and the rinsing treatment in one bathroom cleaning process and the execution timing thereof are not limited. The specific type and ingredients of the detergent are not limited.

A Bathroom cleaning device V0 Hot water pouring on-off valve Va Detergent on-off valve V2 Bypass valve (flow path switching means)
V2'Bypass switching valve (flow path switching means)
V3 Ejection switching valve 1 Bathtub 2 Cleaning nozzle 3 Hot water flow path 30 Bypass flow path 4 Venturi part 6 Detergent supply path

Claims (7)

The hot water flow path connected to the washing nozzle and
A Venturi section provided in the middle of the hot water flow path and for mixing detergent with hot water flowing through the hot water flow path to generate detergent mixed hot water.
It is a bathroom cleaning device equipped with
A bypass that is connected to the hot water flow path and allows hot water flowing in the upstream area in the hot water flow direction from the Venturi section to flow in the downstream area in the hot water flow direction from the Venturi section by a route bypassing the Venturi section. Channel and
A flow path switching means capable of selectively switching between a state in which hot water in the hot water flow path passes through the bypass flow path and a state in which the hot water does not pass through the bypass flow path.
A bathroom cleaning device characterized by being further equipped with. The bathroom cleaning device according to claim 1.
The detergent cleaning process of ejecting the detergent mixed hot water from the cleaning nozzle and the rinsing process of ejecting the non-detergent mixed hot water from the cleaning nozzle to eject the non-detergent mixed hot water are configured to be executed in a predetermined procedure. There is a bathroom cleaning device. The bathroom cleaning device according to claim 2.
A bathroom cleaning device configured so that hot water in the hot water flow path passes through the bypass flow path during the rinsing process. The bathroom cleaning device according to claim 2 or 3.
A plurality of cleaning nozzles are provided as the cleaning nozzle.
During at least one of the detergent cleaning treatment and the rinsing treatment, the operation of individually ejecting the detergent mixed hot water or the non-detergent mixed hot water from each of the plurality of washing nozzles with a time lag is executed. There is a bathroom cleaning device. The bathroom cleaning device according to claim 4.
At least one of the detergent cleaning treatment and the rinsing treatment, the operation of simultaneously ejecting the detergent mixed hot water or the non-detergent mixed hot water from each of the plurality of washing nozzles is executed. There is a bathroom cleaning device. The bathroom cleaning device according to any one of claims 2 to 5.
In the initial stage of the detergent cleaning treatment, the bathroom cleaning device is configured so that the hot water in the hot water flow path passes through the venturi portion without passing through the bypass flow path. The bathroom cleaning device according to any one of claims 2 to 6.
In the latter stage of the detergent cleaning treatment, the hot water in the hot water flow path passes through the bypass flow path in a state where the supply of the detergent to the venturi portion is stopped, and the detergent mixture existing in the hot water flow path A bathroom cleaning device configured to eject hot water from the cleaning nozzle.

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