JPH0357232Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a jet bath device, and particularly to a jet bath device that can improve comfort at the beginning of circulation.

(Prior art) Conventionally, as a jet bath device, for example,
As shown in Japanese Patent No. 222118, there is a system in which a portion of the circulating hot water is sprayed from a shoulder shower (bubble injection nozzle) provided at a position higher than the hot water level of the bathtub.

(Problem to be solved by the invention) By the way, when the circulation of hot water in this type of jet bath device starts and the hot water starts jetting toward the bathtub, at the beginning, the inside of the circulation path, which is cooled by outside air, etc. of residual water will be ejected from the spout. In particular, when cold water is sprayed from a position higher than the water level, the cold water is not alleviated by the bath water and is sprayed directly onto the user's shoulders, making the user uncomfortable. I can feel it.

The present invention has been devised in consideration of the above circumstances, and it is an object of the present invention to provide a whirlpool bath device that can improve comfort at the beginning of circulation.

(Means for Solving the Problem) In order to achieve the above-mentioned purpose, the jet bath device according to the first invention includes a circulation pump interposed in the circulation path connected to the bathtub, and a jet bath device connected to the circulation path. In a bathtub equipped with an injection port outside the bathtub, a switching valve is interposed in the circulation path near the injection port outside the bathtub, and when the hot water temperature on the upstream side of the switching valve is below a predetermined value, the upstream side of the switching valve is connected to the circulation path. A control means is connected to the starting end of the switching valve and controls the upstream side of the switching valve to be connected to the outside injection port when the hot water temperature on the upstream side of the switching valve exceeds a predetermined value.

In addition, in order to achieve the above object, the jet bath device according to the second invention, in place of the control means of the first invention, operates the switching valve on the upstream side of the switching valve within a certain period of time from the start of circulation. is connected to the starting end side of the circulation path, and is characterized in that a control means is provided for controlling the upstream side of the switching valve to be connected to the outside injection port side of the bathtub.

(Function) According to the first invention, the upstream side of the switching valve is connected to the starting end of the circulation path until the water temperature on the upstream side of the switching valve exceeds a predetermined value, and the bath water drawn into the circulation path from the bathtub is connected to the upstream side of the switching valve. mixed with and heated. Then, after the water temperature on the upstream side of the switching valve exceeds a predetermined value, the upstream side of the switching valve is guided to the injection port outside the bathtub, so that the remaining water in the circulation path, which has been cooled by outside air, remains in the bathtub. The cold water is not jetted from the external jetting port, and the user can be prevented from feeling uncomfortable due to the jetting of cold water.

According to the second invention, the upstream side of the switching valve is connected to the starting end of the circulation path within a predetermined period of time from the start of circulation, so that the remaining water in the circulation path cooled by outside air etc. is removed during that time. It is heated by being mixed with the hot water inhaled from the bathtub. Therefore, after a predetermined period of time has elapsed, the hot water sprayed from the outside bathtub spray port has an appropriate temperature, so that the user can be prevented from feeling uncomfortable due to the spray of cold water.

(Example) Hereinafter, the present invention will be specifically explained based on illustrated examples.

FIG. 1 is a water circuit diagram of a jet bath device according to an embodiment of the first invention, and FIG. 2 is a front view of its operation panel. In the figure, 1 is a bathtub, 2 is a circulation path, 3 is a pump, 4 is a distribution valve, 5 is a back leg switching valve, 6 is a switching valve, 7 is a thermistor, 8 is a return pipe, 9 is a shoulder shower, and 10 is an operation board, 10a is the operation switch, 1
0b is a jet switch, 10c is a shower switch, 10d is a dorsal foot switch, 10e is a foam volume adjustment switch, 10f is a shower lamp, 10g
1 is a preparation lamp, and 11 is a control circuit. The switching valve 6 connects the upstream side of the switching valve 6 to the return pipe 8 when the water temperature detected by the thermistor 7 is below a predetermined value, and connects the upstream side and the downstream side of the switching valve 6 when it exceeds the predetermined value. The control circuit 11 controls the connection.

In the above configuration, when the shower switch 10c is turned on while the operation switch 10a is turned on, operation of the pump 3 is started, and circulation of water in the circulation path 2 is started. A portion of the circulating hot water discharged from the pump 3 is then passed through the distribution valve 4 to the switching valve 6.
distributed to the sides. When distribution of circulating hot water to the switching valve 6 side is started, residual water in the piping from the distribution valve 4 to the switching valve 6 first flows to the switching valve 6 side. If the temperature of the residual water detected by the thermistor 7 is the above predetermined value, the control circuit 11 switches the switching valve 6 to a position where the upstream side is connected to the return pipe 8, and the residual water flowing into the switching valve 6 is switched to the position where the upstream side is connected to the return pipe 8. is led to the starting end of the circulation path 2 via the return pipe 8, where it is mixed with the hot water sucked in from the bathtub 1 and warmed, and a part of it returns to the upstream of the switching valve 6 through the distribution valve 4, and the other part The portion is returned to the bathtub 1 from the distribution valve 4 through the dorsal leg switching valve 5. When the appropriate temperature hot water diverted from the distribution valve 4 reaches the switching valve 6, the temperature detected by the thermistor 7 exceeds a predetermined value, and the control circuit 11 controls the switching valve 6.
is switched to a position connecting the upstream side and the downstream side, and hot water on the upstream side of the switching valve 6 is injected from the shoulder shower 9. Therefore, there is no fear that the user will be exposed to cold water from the shoulder shower 9, and the user can be prevented from feeling uncomfortable due to the jet of cold water.

FIG. 3 1 is a longitudinal sectional view of a switching valve of a jet bath apparatus according to another embodiment of the first invention at a low temperature, and FIG. 3 2 is a longitudinal sectional view of the switching valve at an appropriate temperature.
In the figure, 12 is a switching valve, 13 is a valve box, 14 is a valve member, 15 is an upstream channel, 16 is a downstream channel, 17 is a return channel, and 18 is a shape memory material such as a shape memory alloy or shape memory resin. It is a control means consisting of. The control means 18 displaces the valve member 14 to a position where it blocks the downstream water path 16 when the hot water temperature in the upstream water path 15 is below a predetermined value, and controls the upstream water path 15 to return to the return water path 17.
On the other hand, when the hot water temperature in the upstream hot water path 15 exceeds a predetermined value, the valve member 14 is connected to the return hot water path 1.
7 to a position where it is shielded, and the upstream runner 15 is communicated with the downstream runner 16. The other configurations are the same as those of the above embodiment.

According to this embodiment, the upstream water passage 1 of the switching valve 12
5 is lower than the transformation temperature of the control means 18, the upstream water passage 15 and return water passage 17 of the switching valve 12
The residual water that has flowed into the switching valve 12 is led to the starting end of the circulation path 2 via the return hot water path 17, where it is mixed with hot water drawn from the bathtub 1 and warmed.
When the water temperature in the upstream hot water path 15 of the switching valve 12 becomes equal to or higher than the transformation temperature of the control means 18, the upstream hot water path 15 and the downstream hot water path 16 of the switching valve 12 are communicated with each other, and hot water is injected from the shoulder shower 9. It turns out. Therefore, in addition to obtaining the same effect as the above embodiment, this embodiment does not require a special energy source to drive the switching valve 12, so running costs can be reduced and the configuration of the control means can be simplified. Can be done.

FIG. 4 is a water circuit diagram of a jet bath device according to an embodiment of the second invention, and FIG. 5 is a timing diagram of the operation of each part thereof. In the figure, each part having the same function as each part in FIG. 1 is given the same reference numeral and name as the corresponding part in FIG. Further, 19 is a control circuit. After the shower switch 10c is turned on with the operation switch 10a of the operation panel 10 turned on, this control circuit 19 operates to control the switching valve 6 upstream thereof within a predetermined time set by a built-in timer (not shown). The switching valve 6 is configured to be in a position where the side thereof is connected to the return pipe 8, and after that time, to be switched to a position where the upstream side and the downstream side of the switching valve 6 are connected.

According to this embodiment, when the operation switch 10a of the operation panel 10 is turned on, the shower switch 1 is turned on.
During a predetermined period of time after turning on 0c, residual water in the piping from the distribution valve 4 to the switching valve 6 flows to the switching valve 6, but this residual water flows through the return pipe 8 to the circulation path 2. The hot water is introduced to the starting end, mixed with the hot water sucked from the bathtub, and heated, a part of which returns to the upstream of the switching valve 6 through the distribution valve 4, and the other part passes through the distribution valve 4.
The water is then returned to the bathtub 1 through the dorsal leg switching valve 5. Then, when the predetermined time set to be longer than the time required for the hot water at the appropriate temperature distributed from the distribution valve 4 to reach the switching valve 6 has elapsed, the upstream side of the switching valve 6 and the shoulder shower 9 are communicated, Hot water heated to an appropriate temperature is sprayed from the shoulder shower 9. Therefore, there is no fear that the user will be exposed to cold water from the shoulder shower 9, and the user can be prevented from feeling uncomfortable due to the jet of cold water.

(Effect of the invention) As described above, according to the first invention, hot water is introduced to the injection port outside the bathtub after the water temperature on the upstream side of the switching valve reaches the appropriate temperature, and according to the second invention Since the hot water is introduced to the injection port outside the bathtub after the predetermined time required for the water temperature on the upstream side of the switching valve to reach the appropriate temperature, hot water heated above the optimum temperature is injected from the injection port outside the bathtub. Ru. Therefore, there is no fear that the user will be exposed to cold water from the spray outlet outside the bathtub, and the user can be prevented from feeling uncomfortable due to the spray of cold water.

[Brief explanation of drawings]

Fig. 1 is a water circuit diagram showing one embodiment of the first invention, Fig. 2 is a front view of its operation panel, and Figs. 3 1 and 3 2 show other embodiments of the first invention. FIG. 4 is a water circuit diagram showing an embodiment of the second invention, and FIG. 5 is an operation timing diagram thereof. 1...Bathtub, 2...Circulation path, 3...Circulation pump, 9...Shoulder shower (outside bathtub injection port), 6...
...Switching valve, 12...Switching valve, 11... Control circuit (control means), 18... Control means, 19... Control circuit (control means).

Claims (1)

[Claims for Utility Model Registration] 1. In a bathtub in which a circulation pump is interposed in a circulation path connected to a bathtub, and an injection port outside the bathtub is connected to the circulation path, the circulation path near the injection port outside the bathtub: A jet bath characterized by being provided with a switching valve for switching the circulation path between an injection port outside the bathtub and a starting end side of the circulation path, and a control means for controlling the switching valve by the water temperature upstream of the switching valve. Device. 2 In a bathtub in which a circulation pump is interposed in a circulation path connected to a bathtub and an injection port outside the bathtub is provided, the circulation path is connected to the injection port outside the bathtub in the vicinity of the injection port outside the bathtub. A switching valve is provided for switching between the side and the start end side of the circulation path, and a control means is provided for switching the switching valve from the start end side of the circulation path to the outside injection port side after a certain period of time from the start of operation of the circulation pump. A jet bath device.