JPH0343535Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a shower device.

(Prior Art) Previously, the applicant of the present application provided a plurality of shower outlets in a vertically elongated shower tower body in Utility Application No. 163954/1982, and by operating a switch, the entire body was covered with hot water without having to take an unreasonable posture. We proposed a shower device that can

(Problem that the invention aims to solve) However, in the conventional shower shower, when the shower is not in use, the hot water that passes through the hot water mixing valve is returned to the water supply side of the water heater via a return pipe, so the temperature is lowered by the hot water mixing valve. Therefore, as shown in Figure 1, the return pipe is connected to the hot water outlet pipe on the upstream side of the hot water mixing valve, and when the shower is used, the solenoid valve for hot water tapping is opened and the hot water adjusted by the hot water mixing valve is I'm trying to put out the hot water. However, in this configuration, when the shower is not in use, the hot water in the hot water supply pipe between the hot water mixing valve and the hot water tapping solenoid valve is cooled down, so if the shower is not used for a long time after use, it is necessary to drain the water in the hot water pipe. As shown in the figure, a main solenoid valve is installed downstream of the hot water mixing valve, and a drain pipe is connected to the hot water pipe between the main solenoid valve and the hot water tap solenoid valve. The valve was closed, and then the drain solenoid valve and the hot water tap solenoid valve installed in the drain pipe were closed in the drain mode to drain the inside of the hot water pipe. However, with the above configuration, when the shower is stopped, residual pressure exists in the hot water supply pipe between the main solenoid valve and the hot water tap solenoid valve, and this residual pressure is applied to the valve bodies of the drain and hot water tap solenoid valves, making it difficult for both valves to open easily. Therefore, the problem arose that drainage was not possible.

(Means for Solving the Problems) The present invention aims to solve such problems, and for that purpose, the present invention connects the water supply main pipe and the hot water main pipe from the water heater to the hot water mixing valve. However, between this hot water mixing valve and the shower outlet, a solenoid valve and a solenoid valve for discharging hot water were interposed from the hot water mixing valve side, and a solenoid valve for draining was interposed in the drain path that communicated with the hot water supply path between both valves. The controller is equipped with a controller that opens the main solenoid valve and the hot water tap solenoid valve when the shower is used, and closes the main solenoid valve and the hot water tap solenoid valve in sequence with a time difference when the shower is stopped. It is structured as follows.

(Function) In this invention, the main solenoid valve and the hot water discharge solenoid valve are driven to open by the shower operation, and hot water adjusted by the hot water mixing valve is supplied to the shower outlet, making it possible to use the shower. The stop operation closes the main solenoid valve to stop discharging hot water from the shower outlet, and also closes the solenoid valve for dispensing hot water with a time lag after the main solenoid valve closes, reducing the pressure in the hot water supply pipe. is low, and therefore the drain solenoid valve and the hot water tapping solenoid valve can be opened reliably when draining water.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIG. 1, reference numeral 1 denotes a shower body to be installed and fixed in a bathroom, and a plurality of shower outlets 2, 3, 4, 5, and 6 are provided in vertical rows on the surface of the body. The shower outlet is located on the sloped sides of both sleeves of the planar shape. Reference numerals 8, 9, and 10 designate discharge switches that are part of the plurality of shower discharge ports and are provided near the discharge ports, and are connected to a control circuit (not shown) that opens and closes the discharge of hot water, and are connected to a control circuit (not shown) that opens and closes the discharge of hot water. By turning on the switch, the number of discharged hot water, that is, the discharge height can be specified.

12 is a multifunctional shower outlet such as an air pine surge shower, and 13 is a hot water outlet.

Hot water and water are supplied to the shower tower body 1 through piping on the back side of the shower tower body 1. 14 is a cistern, and 15 and 16 are water heaters connected in series. 17 is a water supply main pipe, 18 is a hot water main pipe, and 19 is a return pipe for returning hot water to the water supply side of the water heater. 21,
22 is a pump, and 23 is a check valve. A hot water mixing valve 24 connects the main water supply pipe 17 and the main hot water supply pipe 18, and is controlled so that hot water at a set temperature flows out based on the temperature detected by a temperature detector 25 provided on the outflow side. 26 is the original solenoid valve, 27 is the drainage solenoid valve, 28
is the flow control valve. The flow rate control valve 28 is controlled to have a set flow rate based on the flow rate detected by the flow rate detector 29, and hot water is supplied from the flow rate control valve 28 to the shower outlet 2 and the like through the hot water supply path 30. Reference numeral 31 denotes a hot water tapping electromagnetic valve installed in each hot water supply path 30. 3
3 and 34 are branch water pipes and branch hot water pipes branched from the main water supply pipe 17 and the main hot water supply pipe 18, respectively;
The branch water pipe 33 and the branch hot water supply pipe 34 are provided with a pressure switch 35 for detecting the opening of the water faucet connected to the end thereof, and a flow rate switch 36 for detecting the closing of the faucet. The operation of the shower device is such that a controller 67 (described later) detects the turning on of an operation switch installed in a kitchen (not shown), and the pump 22 is driven.
The set temperature (70
It is generated by circulating hot water at temperatures (℃).
When the shower tower body 1 is not in use, the original solenoid valve 26 is closed, the drainage solenoid valve 27 is opened, and the direct-acting solenoid valve 31 described later
b is closed after being opened for a certain period of time, and therefore the water in the hot water supply path after the former solenoid valve 26 is drained. Next, when using fogging water, for example, select the fogging water by operating an operator (not shown) set in the shower tower body 1, set the water temperature and flow rate, and then the controller 67 will turn on the fogging water. In response to the hot water selection signal, the pump 21 moves, the pump 22 stops, the main solenoid valve 26 opens, the drainage solenoid valve 27 closes, and a pilot type solenoid valve 31 (described later) is connected to the shower discharge ports 2 to 6.
a is opened, the hot water mixing valve 24 controls the temperature of hot water, and the flow rate control valve 28 controls the flow rate to a set value and supplies the hot water. In the above-mentioned covering water, the height of the covering water at the time of covering water can be set by operating the shower discharge switches 8 to 10.

FIG. 2 shows a sectional view of the hot water tapping solenoid valve 31, which consists of a pilot type solenoid valve 31a and a direct acting type solenoid valve 31b, which are interposed in parallel in the hot water supply path 30. The pilot type solenoid valve 31a has a diaphragm valve body 51 that opens and closes a valve seat 50 formed on a single valve main body 49 having an inlet passage 47 and an outlet passage 48, and an opening 52 provided in the valve body 51 that is connected to a coil 53 that is energized. It consists of a plunger 54 that is driven to open. Note that 55 is an opening provided in the diaphragm valve body 51. Further, the direct acting solenoid valve 31b has the above-mentioned valve main body 49.
The valve body 61 includes a valve body 61 that opens and closes a valve seat 60, and a plunger 64 that attaches the valve body 61 and opens the valve seat 60 by being driven by energization of a coil 63. Reference numeral 67 is a controller that operates a relay by outputting a valve opening signal and a drive signal for the load such as the electromagnetic valve or pump described above, and closes the relay contact and energizes to open and drive the valve.

In the above configuration, its operation is shown in Figures 3 and 4.
This will be explained in more detail based on the drawings.

When the selection signal A of the fogging water menu is output and the selection signal A is received by the control unit 68, first, the output of the drive signal of the pump 22 is stopped (FIG. 4 1), and the drive of the pump 22 is stopped. pump 21
The pump 21 outputs a drive signal (Fig. 4 2).
At the same time, the valve opening signal B of the original solenoid valve 26 is outputted (Fig. 4, 3), the relay 26a is operated to open the original solenoid valve 26, and at the same time, the drainage solenoid valve 2 is opened.
7, outputs valve opening signal C (Fig. 4 4), and relay 2
7a to open the drainage solenoid valve 27. Then, timer B is set when the valve opening signal C of the drainage solenoid valve 27 is output, and when timer B is up, the valve opening signal D of the pilot type solenoid valve 31a is output.
(Fig. 4, 5), activates the relay 31c to open the pilot type solenoid valve 31a, and stops outputting the valve opening signal of the drainage solenoid valve 27 (Fig. 4, 6). The hot water supply path 30 starts by closing the solenoid valve 27 for heating, and extends from the lower shower outlet 6 to the shower outlets 2 to 4 at the height set by the shower discharge switches 8 to 10. The pilot type solenoid valves 31a are sequentially energized and opened.

Next, when the use of cover water is stopped, the control unit 68 detects the stoppage of the output of the selection signal A by the stop operation of the operating device, and first stops the output of the valve opening signal B of the original solenoid valve 26 (Fig. 4, 7). After closing the original solenoid valve 26,
After a certain period of time (approximately 0.2 seconds) set by timer A, the output of the drive signal of the pump 21 is stopped (Fig. 4, 8), and the output of the valve opening signal D of the pilot type solenoid valve 31a is stopped ( 4), the pump 21 is stopped and the pilot type solenoid valve 31a is closed. If this stopped state continues for a set period of time, when the timer C times up, a valve opening signal C for the draining solenoid valve 27 is output (see FIG. 4, 10), and at the same time, a valve opening signal for the direct acting solenoid valve 31b is output. (FIG. 4, 11) and opens both valves 27 and 31b. Through this operation, the water stagnant in the water channel after the original solenoid valve 26 is drained from the drain channel 66. Then, the direct acting solenoid valve 31b is closed after the time set by the timer D.

(Effect of the invention) As explained above, according to the invention, when the shower is not in use, the main solenoid valve and the hot water tapping solenoid valve are closed in order with a time difference, so the residual pressure in the hot water supply path between the two valves is After the main solenoid valve closes, it decreases until the solenoid valve for hot water tap closes. Therefore, when draining water, the solenoid valves for draining and hot water can be easily opened, and there is no drainage problem, and therefore, the solenoid valve for hot water tap can be opened again. Cold water does not come out when using the shower.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the electromagnetic valve for tapping hot water in the same example, FIG. 3 is a control circuit diagram of the main parts in the same example, and FIG. 4 is a control flowchart of the main parts in the same example. 2 to 6...Shower outlet, 15...Water heater,
16... Water heater, 21... Pump, 26... Original solenoid valve, 27... Drainage solenoid valve, 30... Hot water supply path,
31...Solenoid valve for tapping hot water, 66...Drain channel, 67...
...Controller.

Claims (1)

[Scope of utility model registration request] The water supply main pipe and the hot water supply main pipe from the water heater are connected to a hot water mixing valve, and a source solenoid valve and a hot water discharge solenoid valve are interposed between the hot water mixing valve and the shower outlet from the hot water mixing valve side, and both valves are connected. In the case where a drain solenoid valve is interposed in the drain channel communicating with the hot water supply channel between the two, the main solenoid valve and the hot water tap solenoid valve are opened when the shower is used, and the main solenoid valve and the hot water tap solenoid valve are opened when the shower is stopped. 1. A shower device comprising a controller that sequentially closes and closes the valves with a time difference.