JPH0596168U - Bath drain valve device - Google Patents

Abstract

(57) [Summary] [Purpose] To connect the reheating circulation pipe 6 of the bath to the mouthpiece 13 on the drain valve side without directly connecting to the bathtub wall. [Structure] A mouthpiece 13 is detachably attached to a drainage hole 3 on a bottom surface 2 of a bathtub 1. A drainage passage 16, an outward passage 17 and a return passage 18 are formed in the mouthpiece 13. The drainage passage 16 is provided with the drainage valve 4 from the inside of the bathtub. An adapter 34 is attached to the lower end side of the mouthpiece 13, a forward pipe 8 is connected to a forward connection portion 42 of the adapter 34, a return pipe 7 is connected to a return side connection portion 43 of the adapter 34, and the reheating circulation pipe line 6 is opened. It is connected to the bathtub 1 via the tool 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage valve device for a bathtub which is attached to a drainage hole of the bathtub.

[0002]

[Prior Art]

 FIG. 9 shows a basic system of a general bath device. In the figure, a drainage hole 3 is formed in the bottom surface 2 of the bath tank 1, and a drainage valve 4 made of a rubber plug or the like is detachably fitted into the drainage hole 3 so that the drainage hole 3 is closed. The bathtub 1 is filled with water or hot water.

A return pipe 7 and a forward pipe 8 of a reheating circulation line 6 are connected to a side wall 5 of the bathtub 1, and a circulation pump 10 is activated to suck hot water in the bathtub 1 from the return pipe 7, The suctioned hot and cold water is heated by the reheating heat exchanger 11, and the hot water having a high temperature is discharged into the bathtub 1 from the forward pipe 8 to reheat the hot and cold water in the bathtub 1.

When bathing in the bathtub 1 is completed, the chain 12 is pulled up and the drain valve 4 is pulled out from the drain hole 3, whereby the bath water is drained from the drain hole 3.

[0005]

[Problems to be solved by the device]

 When constructing a conventional bath device, in order to connect the return pipe 7 and the forward pipe 8 of the reheating circulation line 6 to the side wall 5 of the bath tank 1, it is necessary to work a connection hole in the side wall 5. However, there is a problem that this drilling work is very complicated and takes a lot of time and labor, the work efficiency is poor, and the plumbing worker has a great deal of trouble.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a reheating circulation line without requiring a hole for connecting the reheating circulation line to the wall surface of the bathtub. The purpose of the present invention is to provide a drainage valve device for a bathtub that can be easily connected to the bathtub 1 and that is easily piped.

[0007]

[Means for Solving the Problems]

 The present invention is configured as follows to achieve the above object. That is, in the drainage valve device of the present invention, a mouthpiece is attached to the drainage hole of the bathtub, and the mouthpiece is provided with a drainage passage and a forward passage and a return passage for circulating hot and cold water in the bathtub. A drainage valve is provided in the drainage passage of the above, and at the outlet end side of the inlet and the return passage of the mouthpiece, either or both of the forward passage and the return passage are heated. An adapter connected to the circulation line is installed, the mouthpiece is provided with a closing means for closing one or both of the forward passage and the return passage, and the bottom of the bathtub reaches the drainage passage of the mouthpiece. The flow path should be located below the bottom of the bathtub, the outlet of the outflow passage should be located above the bottom of the bathtub, and a filter should be provided at an appropriate point from the inlet side to the outlet side of the return passage. And opening and closing the drainage passage Each valve is a negative pressure type automatic drain valve driven by a vacuum pump, which is also a characteristic configuration of the present invention.

[0008]

[Action]

 In the present invention having the above-mentioned structure, the return pipe of the reheating circulation line is provided at the outlet side of the return passage to the mouthpiece attached to the drainage hole of the bathtub, and the reheating circulation line is provided at the inlet side of the outward passage of the mouthpiece. By connecting the forward pipe of No. 1, the reheating circulation line is connected to the bathtub through the mouthpiece without making a hole in the wall surface of the bathtub.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In the conventional example and each of the examples, the same members are denoted by the same reference numerals, and the duplicated description of the items already described in the later examples will be omitted.

FIG. 1 shows a first embodiment of the present invention. In the figure, a drainage hole 3 is formed in the bottom surface 2 of the bathtub 1, and the drainage hole 3 is fitted with the mouthpiece 13 characteristic of the present embodiment. This mouthpiece 13 comprises an assembly of a body portion 14 and a cover portion 15. The body portion 14 is shown in FIG. 2 ((a) is a plan view of (b), (c) is a bottom view of (b)). In this way, the drainage passage 16 is provided in the central portion, and the outward passage 17 and the return passage 18 are formed on both sides of the drainage passage 16. Step portions 19 and 20 are provided on the upper side of the outward passage 17 and the return passage 18, and a valve seat 21 is formed on the upper end side of the drainage passage 16. An engagement groove 22 is formed outside the valve seat 21. Further, screw holes 23 are formed at appropriate positions on the bottom surface of the body portion 14.

As shown in FIG. 3 ((a) is a plan view of (b) and (c) is a bottom view of (b)), the cover portion 15 is provided with a frame wall having a triangular cross section. The outer frame wall 24 is formed with a suction through hole 25 communicating with the return passage 18 on the side corresponding to the return passage 18 of the body portion 14. A discharge through hole 26 communicating with the outward passage 17 is formed on the side of the body portion 14 corresponding to the outward passage 17. Further, the inner frame wall 27 is formed with a drainage introduction hole 28 for guiding hot water from the bathtub to the drainage passage 16. The flow path from the suction through hole 25 through the drainage introduction hole 28 to the drainage passage 16 has a low level below the bottom surface of the bathtub so that the residual water in the hot water of the bathtub does not collect on the bottom surface of the bathtub when the hot water of the bathtub is drained. It is formed so that it becomes a rank. Further, the discharge through hole 26 is formed at a position higher than the bottom surface of the bath so that the hot water discharged from the discharge through hole 26 into the bath is uniformly stirred in the bath. A plurality of engagement claws 30 are provided on the lower end side of the inner frame wall 27. By engaging the engagement claws 30 with the engagement grooves 22 of the body portion 14, the cover portion 15 and the body portion are 14 is detachably incorporated and integrated.

A male screw 31 is formed on the outer peripheral surface of the body portion 14, and a fastening ring 32 is screwed to the male screw 31, and the body portion 14 is packed by screw fastening with the ring 32. It is detachably attached to the bathtub bottom wall of the drainage hole 3 via 33.

A manual drain valve 4 such as a rubber plug is detachably fitted on the upper end side of the drain passage 16 of the body portion 14.

When the mouthpiece 13 is connected to the return pipe 7 and the forward pipe 8 of the reheating circulation pipe 6, piping is provided at the inlet side of the forward passage 17 and the outlet side of the return passage 18 of the body portion 14 described above. By providing a connecting portion, connecting the pipe connecting portion on the outward passage 17 side to the outward pipe 8 and connecting the pipe connecting portion on the return passage 18 side to the return pipe 7, the reheating circulation pipe via the mouthpiece 13 The road can be connected to bathtub 1.

By the way, there are various types of bath systems, and for example, a type in which hot water such as a water heater is dropped into the bathtub from the faucet side to pour hot water does not have a reheating circulation pipe line. In addition, a bath system of a type for pouring hot water such as a water heater requires a forward pipe 8 for pouring hot water from the water heater, but a return pipe 7 is not provided. Further, there is a bath system that does not require the outgoing pipe 8 when the outgoing pipe 8 is already connected to the wall surface of an existing bathtub or for other reasons. In order to cope with such various types of bath systems, there are mouthpieces 13 according to each type, such as one that has both the outward passage 17 and the return passage 18, one that only has one, and one that does not have both. Although it may be produced separately and independently, the number of types of the mouthpieces 13 increases, which causes a problem of complicated product management.

In order to solve such a problem, in the present embodiment, the mouthpiece 13 is composed of one type provided with both the forward passage 17 and the return passage 18, and the mouthpiece 13 of each type is provided. By connecting an adapter that matches the bath system, it is possible to support any type of bath system.

FIG. 1 shows a state in which an adapter 34 used in a bath system having a reheating circulation line 6 is detachably attached to the mouthpiece 13, that is, the body portion 14. Details of 34 are shown in FIG. In the figure, (a) is a plan view of (b), and (c) is a bottom view of (b). The adapter 34 is provided with a forward fitting cylinder portion 35 that fits in the forward passage 17 and a return fitting cylinder portion 36 that fits in the return passage 18 from the bottom side of the body portion 14 so as to project upward. The forward fitting tubular portion 35 and the return fitting tubular portion 36 are fitted into the corresponding forward passage 17 and return passage 18 with the packings 37 and 38 sandwiched therebetween, and in this state, the bottom of the adapter 34 is The adapter 34 is detachably fixed to the screw hole 23 of the body portion 14 by using a hole 41 provided in the wall 40.

On the side of the bottom wall 40 of the adapter 34, a forward connecting portion 42 that communicates with the tubular hole 35 a of the outward fitting cylindrical portion 35, and a return side connecting portion 43 that communicates with the tubular hole 36 a of the returning fitting tubular portion 36. The forward pipe 8 of the reheating circulation line 6 is connected to the outward connection part 42, and the return pipe 7 of the reheating circulation line 6 is connected to the return side connection part 43. A heating circulation line 6 is connected to the bathtub 1 via a mouthpiece 13.

In the present embodiment, various adapters 34 are prepared according to each type of bath system. For example, in the case of a bath system that does not require the outward passage 17, as shown in FIG. Without the cylindrical hole 35a of the outward fitting tubular portion 35 on the 17 side, the adapter 34 using the outgoing fitting portion 35 as a closing means is connected, and in the bath system that does not require the return passage 18. In this case, as shown in FIG. 6, the return-side fitting cylindrical portion 36 is not provided with a cylindrical hole, and the adapter 34 having the return-side fitting portion 36 as a closing means is attached. Furthermore, in the case of a bath system that does not require both the forward passage and the return passage, as shown in FIG. 7, both the forward fitting cylinder portion 35 and the return fitting pipe portion 36 are closed means without holes. The attached adapter 34 will be attached.

As described above, in the present embodiment, the mouthpiece 13 is shared by one type having both the outward passage 17 and the return passage 18, and the adapter 34 is used in the system depending on each type of bath system. By combining them, any type of bath system can be used, and bath piping can be installed easily.

Further, in this embodiment, since the reheating circulation pipe line 6 can be connected to the bathtub 1 through the mouthpiece 13, it is possible to be freed from the difficult work of making a connection hole on the wall surface of the bathtub. Therefore, the piping work can be facilitated and the work efficiency can be significantly improved.

FIG. 8 shows a second embodiment of the present invention. This embodiment is characterized in that the valve for opening and closing the drainage passage 16 is constituted by a negative pressure type automatic drainage valve 44, and further, a filter is provided on the inlet side of the return passage 18, and other configurations are the same as those of the first embodiment. Is similar to the embodiment of

The negative pressure type automatic drainage valve 44 of this embodiment is configured by fixing one end side of a bellows 46 to the back surface of the top wall 45 of the cover portion 15 and fixing a valve body 47 to the other end side of the bellows 46. ing. A space surrounded by the top wall 45, the bellows 46 and the valve body 47 of the cover portion 15 functions as a negative pressure working chamber 48. A hose connection tube portion 49 is provided so as to project downward in the center of the valve body 47. One end side of a vacuum hose 39 is connected to the hose connection tube portion 49, and the other end side of the vacuum hose is a vacuum pump. The vacuum pump 53 is connected to the vacuum pump 53, and the vacuum operation of the vacuum pump 53 drives the negative pressure working chamber 48 to a negative pressure.

A cover 50 is detachably attached to the outside of the cover portion 15. The cover 50 is formed by a frame body having substantially the same shape as the outer shape of the cover portion 15, and the side wall slope 51 of the cover 50 faces the suction through hole 25 of the cover portion 15 to form a filter forming hole. 52 is provided, and a filter 53 for removing dust such as hair is provided in the filter forming hole 52. Further, a through hole 54 is formed at a position facing the discharge through hole 26 of the cover portion 15 so as not to obstruct the ejection of the hot water discharged from the discharge through hole 26 into the bath.

On the back surface of the top wall of the cover 50, a plurality of (three in this embodiment) pins 55 are provided at circumferentially equidistant positions, and the pins 55 have through-holes (see FIG. It passes through the outside of the bellows 46 through a not shown), and the protruding tip thereof is locked to the upper surface of the valve body 47 and moves up and down in conjunction with the opening / closing operation of the valve of the valve body 47.

In the state of FIG. 8 (a), the negative pressure working chamber 48 is at atmospheric pressure, and at this time, the valve body 47 receives the downward urging force of the bellows 46 and airtightly contacts the valve seat 21. The drainage passage 16 is closed. In this state, the reheating operation is performed, and by driving the circulation pump 10 of the reheating circulation line 6, the bath water flows into the return passage 18 through the filter forming hole 52, and further from the return passage 18. It is sucked into the circulation pump 10 through the return pipe. The hot water discharged from the circulation pump 10 is heated by the reheating heat exchanger 11 and then enters the forward passage 17 from the forward pipe 8 and is discharged into the bathtub through the discharge through hole 26 and the through hole 54 to be heated in the bath water. Rebirth is performed.

When the vacuum pump 10 is driven after the bath is used, the negative pressure working chamber 48 is negatively pressured through the vacuum hose 39, and as a result, the valve body 47 receives the negative pressure suction force and the bellows 46 of the bellows 46. The drainage passage 16 is opened by moving upward against the biasing force. As a result of the pin 55 being pushed upward in conjunction with the upward movement of the valve body 47, the cover 50 is raised upward and, as shown in FIG. 8B, between the lower end of the cover 50 and the bottom of the bath. A gap 56 is created, and the bath water flows through the gap 56, further passes through the suction through hole 25 and the drainage introduction hole 28 in this order, and is discharged from the drainage passage 16 to the outside. In this way, when the bath water is drained, the cover 50 is lifted up and the drained water is drained through the gap 56 instead of passing through the filter forming hole 52.Therefore, dust such as hair may have entered the bath water. However, it is very convenient because this dust does not clog the filter 53 during drainage.

Further, since the cover 50 is attached only by inserting it into the through hole of the cover portion 15, the cover 50 can be easily removed. Therefore, the cover 50 can be easily cleaned by removing it from the inside of the bathtub 1. You can

The present invention is not limited to the above-mentioned embodiments, and various embodiments can be adopted. For example, in each of the above-described embodiments, a plurality of types of adapters 34 are prepared so as to match each pattern of the bath system, but this adapter 34 is used, for example, as shown in FIG. If the forward passage 17 is not needed, the packing 37 provided on the side of the forward fitting cylinder 35 should be a packing without holes to use it as a closing means. In the case of a bath system in which the outward passage 17 is closed as a packing and the return passage 18 is not required, the packing 38 used on the return side fitting tubular portion 36 side is similarly used as the closing means and the return passage 18 is closed. 18 may be closed. In this way, one type of adapter 34 can be used to support various types of bath systems, which is extremely convenient for piping work.

Further, various other means can be used for closing the outward passage 17 and the return passage 18, for example, by fitting a screw with a seal to close these passages 17, 18. The passages 17, 18 can be closed using various known means.

Further, although the return passage 18 is not provided with a filter in the first embodiment, it goes without saying that a filter may be provided.

Further, in the second embodiment, the opening / closing valve of the drainage passage 16 is constituted by the negative pressure type automatic drainage valve 44. However, this automatic drainage valve is a remote control type using a wire, a solenoid valve or the like. Other automatic drain valves may be used.

[0033]

[Effect of the device]

 The present invention is configured so that the forward and return pipes of the reheating circulation line are not directly connected to the side wall of the bathtub but are connected to the bathtub through a fitting attached to the drainage hole of the bathtub. It can be freed from the difficult hole drilling for connecting the bathtub wall surface, which was conventionally required to connect the circulation pipeline, and the piping work can be facilitated and made more efficient. The burden of can be greatly reduced.

In addition, in the structure in which an adapter is connected to the mouthpiece for piping, it is possible to cope with various types of bath system piping connections by simply changing the adapter. In the case of a structure provided with a closing means for closing both or one of the outward passage and the return passage, one type of adapter can be used to connect pipes of various bath system patterns. Construction can be made even easier.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing a first embodiment of a drainage valve device for a bath according to the present invention.

FIG. 2 is an explanatory diagram of a body portion that constitutes a mouthpiece of the apparatus of the embodiment.

FIG. 3 is an explanatory view of a cover portion which constitutes a mouthpiece of the apparatus of the embodiment.

FIG. 4 is an explanatory diagram of an adapter that constitutes the device of the embodiment.

FIG. 5 is an explanatory view of a drainage valve device to which an adapter having a closing means for the outward passage is attached.

FIG. 6 is an explanatory view of a drain valve device to which an adapter having a return passage closing means is attached.

FIG. 7 is an explanatory diagram of a drainage valve device to which an adapter having a closing means for the outward passage and the return passage is attached.

FIG. 8 is an explanatory diagram of a configuration and an operation showing a second embodiment of the present invention.

FIG. 9 is a basic system diagram of a bath apparatus including a general reheating circulation line.

[Explanation of symbols]

 1 Bathtub 3 Drainage hole 6 Reheating circulation line 7 Return pipe 8 Outgoing pipe 13 Mouthpiece 14 Body part 15 Cover part 16 Drainage passage 17 Outgoing passage 18 Return passage 34 Adapter 44 Negative pressure automatic drainage valve 50 Cover

Claims (6)

[Scope of utility model registration request] 1. A drainage hole of a bathtub is equipped with a mouthpiece, and the mouthpiece is provided with a drainage passage and a forward passage and a return passage for circulating hot and cold water in the bathtub. A drain valve device for a bath where a valve is installed. 2. An adapter for connecting either or both of the outward passage and the return passage to the reheating circulation line is mounted on the inlet end of the outward passage and the outlet end of the return passage of the mouthpiece.
The drain valve device for the bathtub described. 3. The drainage valve device for a bathtub according to claim 1, wherein the mouthpiece is provided with closing means for closing both or one of the outward passage and the return passage. 4. The flow path from the bottom surface of the bathtub to the drainage passage of the fitting is provided at a lower position below the bottom surface of the bathtub, and the outlet of the outward passage is provided at a higher position above the bottom surface of the bathtub.
The drainage valve device for a bathtub according to any one of 1. 5. The drain valve device for a bathtub according to claim 1, wherein a filter is provided at an appropriate position from the inlet side to the outlet side of the return passage. 6. The drainage valve device for a bathtub according to claim 1, wherein the valve for opening and closing the drainage passage is a negative pressure type automatic drainage valve driven by a vacuum pump.