JPH06249452A - Hot water supplying device - Google Patents

Abstract

PURPOSE:To execute a rapid hot-water supply with respect to a hot water having a set temperature by stopping a heating by a hot-water heating boiler body when a low temperature water feeding to a bath vessel is ordered, and by controlling a mixed water regulator to such a direction that a mixed temperature becomes a bath setting temperature. CONSTITUTION:When an order of a low temperature water supply to a bath vessel is received, a controller 100, of course, it openes an automatic hot-water supplying bath valve 64 of an automatic hot-water supply bath tube 63, holds, a combustion in a hot-water heating boiler body 10, that is to say, a heating at a stoppage condition even in the case wherein an inflow water quantity sensor 21 detects more than a lowest action water quantity, and makes a mixed water regulator 50 to act to a direction wherein a temperature after a mixing of water becomes a bath setting temperature. By being executed like this, for example, even if a lower hot-bath-water operation is started and a lower hot- bath-water supply is executed, a residue high temperature water does not flow into the bath vessel as it is with a high temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus which can supply hot water or low temperature water to a bathtub in addition to general hot water supply by controlling the temperature.

[0002]

2. Description of the Related Art Conventionally, for example, an oil water heater has been provided which can supply hot water or low temperature water (water) to a bathtub in addition to general hot water supply. Furthermore, in these water heaters, a part of the water inlet pipe is branched to provide a bypass pipe, which is connected to the hot water outlet pipe through a water mixture controller, and if necessary, temperature-controlled hot water or low temperature Some have been adapted to supply water to the bath. The temperature-controlled hot water may be filled with hot water having a bath set temperature, or the low-temperature water may be used as "warm water" for the bath.

[0003]

However, in the above-described conventional hot water supply apparatus, for example, when hot water is supplied as a general hot water and then "lubrication" hot water supply of the bath is instructed,
There has been a problem that hot water remaining in a hot water heating can or a small tank in the middle of a hot water supply pipe flows into the bath prior to low temperature water, which gives a bather discomfort. Similarly, when the general hot water tap is opened while switching to low temperature water while "warm" hot water is being supplied to the bathtub, low temperature water that is extremely lower than the set temperature for general hot water is initially used for general hot water supply. There was a problem.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art and prevents hot water from flowing into the bathtub even when the bath warm water supply is started immediately after hot water supply. Even if the hot water is switched to general hot water during warm water supply, or even if the general hot water supply is performed immediately after the bath warm water supply operation is completed, the hot water of the set temperature can be quickly supplied by reducing the low temperature water as much as possible. For the purpose of provision.

[0005]

In order to achieve the above object, the hot water supply apparatus of the present invention comprises a heating can body for hot water supply, an inlet pipe for supplying low temperature water to the heating can body for hot water supply, and the heating for hot water supply. A hot water outlet pipe for discharging hot water from the can body, a bypass pipe branched from the water inlet pipe, and a mixture for sending low temperature water from the bypass pipe and hot water from the hot water outlet pipe to a hot water supply pipe by adjusting the mixture ratio. It has at least a water controller and a controller for controlling each part of the device, and has a bath automatic hot water supply pipe in addition to the general hot water supply pipe as the hot water supply pipe, and hot water or low temperature water is supplied to the bathtub through the bath automatic hot water supply pipe. Is also capable of automatically supplying the hot water supply device, wherein the controller holds the heating by the hot water supply heating can body in a stopped state when the low temperature water supply to the bathtub is commanded and the water mixture controller. The mixed water temperature becomes the bath set temperature It is characterized in that it has a configuration of controlling the direction.

[0006]

According to the features of the present invention, when the low-temperature water supply to the bathtub is instructed as the bath warm water supply, the controller does not perform the heating operation of the hot-water supply heating can body, and from the tap pipe side. The mixed water controller is controlled so that the mixed water temperature of the hot water and the low temperature water from the bypass pipe side becomes the bath set temperature. Therefore, for example, if a warm bath hot water supply is commanded immediately after general hot water is supplied using high-temperature water, at the beginning of the warming operation, the residual high-temperature water from the tap pipe side is set by the low-temperature water from the bypass pipe. It is supplied to the bath in a temperature-controlled manner. Therefore, hot water is not suddenly supplied to the bathtub. Then, since the supply of high temperature water from the hot water outlet side gradually decreases, the mixture controller operates to reduce the mixing amount of low temperature water from the bypass pipe and increase the percentage of hot water from the hot water outlet side. To do. As a result, finally, the hot water outlet pipe side is fully opened and the bypass pipe side is fully closed by the water mixing controller. In any case, the low temperature water is supplied to the bath after the residual high temperature water flows out. By the above operation, the water mixture controller substantially fully opens the outlet pipe side during the bath warming operation except during the initial stage, so that the general hot water tap is opened during the bath warming operation. Even if the hot water supply is started, the low temperature water from the bypass pipe is not mixed in the initial stage of the hot water supply, and the general hot water supply can be started with the hot water only from the fully opened hot water supply pipe. That is, since no additional low-temperature water is added at the beginning of the general hot water supply, the general hot water supply by the low temperature water becomes small, and the hot water of the set temperature is quickly supplied.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the hot water supply apparatus of the present invention, and FIG. 2 is a relationship between the hot water temperature in the tap water pipe during the bath warming operation and the hot water temperature flowing into the bathtub through the water mixture controller. FIG.

In FIG. 1, reference numeral 10 denotes a heating can body for hot water supply by an oil burner, which heats low-temperature water from a water inlet pipe 20 to discharge a hot water pipe.
Hot water to 30. The water inlet pipe 20 is provided with a water inlet flow rate sensor 21 and a water inlet temperature sensor 22, and the hot water outlet pipe 30 is a small tank 31 for reducing unevenness of the hot water outlet temperature, and a hot water outlet temperature sensor.
32 are provided. A bypass pipe 40 is provided so as to be branched from the water inlet pipe 20, and the bypass pipe 40 and the hot water outlet pipe 30 are provided.
And are connected to the hot water supply pipe 60 via the water mixture controller 50. The hot water supply pipe 60 is provided with a hot water supply temperature sensor 61. The hot water supply pipe 60 is branched into a general hot water supply pipe 62 and a bath automatic hot water supply pipe 63.

Reference numeral 70 denotes a bath heating can body. Bath water from the bathtub 1 is circulated to the bath heating can body 70 through the outflow pipe 80 and heated. Then, the heated bath water returns to the bath 1 through the return pipe 90. The outgoing pipe 80 and the return pipe 90 form a bath circulation path. The outflow pipe 80 is provided with a circulation pump 81 and the like. The bath automatic hot water supply pipe 63 is connected to the forward pipe 80 via a three-way switching valve 82, and a bath automatic hot water supply valve 64, a bath automatic hot water supply flow rate sensor 65, etc. are provided in the middle of the bath automatic hot water supply pipe 63. The controller 100 controls each part of the device. The controller 100 controls the hot water supply remote controller 110,
It receives a command from the bath remote controller 120, inputs information from the sensor of each part of the device, and outputs a predetermined operation command to each part of the device.

In the general hot water supply, when a hot water tap (not shown) of the general hot water supply pipe 62 is opened and the water flow rate sensor 21 detects a certain minimum operating water amount or more, a hot water heating can body is provided.
The combustion of 10 is started, and the controller 100 calculates the required amount of heat from the set temperature of the general hot water supply, the incoming water temperature, and the incoming water flow rate, and controls the burner output. The hot water discharged from the heating can body 10 for hot water supply enters the hot water supply pipe 60 through the water mixing controller 50 and is supplied to the general hot water supply pipe 62. The actual hot water supply temperature is detected by the hot water supply temperature sensor 61, and the mixed water controller 50 adjusts the mixed water ratio via the controller 100 to finely adjust the hot water supply temperature. At this time, the bath automatic hot water supply valve 64 is closed.
Even when hot water having a bath set temperature is supplied to the bathtub, the hot water supply temperature is adjusted in the same manner as in the case of the general hot water supply only by opening the bath automatic hot water supply valve 64 and closing the general hot water supply tap.

In the present invention, for example, the bath remote controller 12
As a control mechanism of the controller 100 when the bath warming operation is instructed by 0, the operation control of the hot water supply heating can body 10 and the water mixture controller 50 is defined as follows. That is, when the low temperature water (water) supply command to the bathtub is received, the controller 100
Is, of course, to open the bath automatic hot water supply valve 64 of the bath automatic hot water supply pipe 63, even when the incoming water flow rate sensor 21 detects a minimum operating water amount or more, combustion of the hot water supply heating can body 10,
That is, the heating is maintained in a stopped state, and the mixed water controller 50 is operated so that the temperature after mixed water becomes the bath set temperature. By configuring the control mechanism of the controller 100 as described above, for example, when the bath warming operation is started after hot water supply, the controller 100 uses the temperature of the incoming water temperature sensor 22 and the outgoing hot water temperature sensor 32 to control the bath remote controller 120. The water mixture controller 50 is operated so as to reach the bath set temperature that has already been set, and the water heater temperature sensor 61 finely adjusts the water mixture controller 50. At this time, since the hot water supply heating can body 10 is not burned, the temperature of the hot water from the hot water outlet pipe 30 gradually decreases (A in FIG. 2). Then, in order to adjust the temperature after mixing the water to the bath set temperature, the water mixing controller 50 increases the water mixing ratio on the side of the hot water outlet pipe 30, and eventually the side of the hot water outlet pipe 30 is fully opened and the bypass pipe 40 is opened.
The side is fully closed. In this way, the temperature of the hot water flowing in the hot water outlet pipe 30 changes as shown in FIG.
The inflow temperature into the chamber changes as shown by B in FIG. That is, even if the bath warm water is supplied immediately after the high temperature water is supplied, the residual high temperature water does not flow into the bathtub 1 at a high temperature.

During the bath warming operation, the water mixing controller 50 fully opens the hot water outlet pipe 30 side except the initial stage of the operation, and the bypass pipe
Since the 40 side is fully closed, even if the general hot water tap is automatically switched to normal hot water by opening the general hot water tap during this bath warming operation, the general hot water supply will start immediately after the bath warming operation ends. Even in the case of the above, the low temperature water from the bypass pipe 40 is not mixed in the initial stage at that time, and the hot water can be started to be supplied only from the fully opened hot water pipe. That is, since no additional low-temperature water is added at the beginning of the general hot water supply, the general hot water supply by the low temperature water becomes small, and the hot water of the set temperature is quickly supplied. In addition, if the general hot water supply system is opened during the bath warming operation, the water flow rate sensor
Based on the difference between the flow rates detected by 21 and the bath automatic hot water supply flow rate sensor 65, the controller 100 determines that the general hot water supply tap is opened, and closes the bath automatic hot water supply valve 64. In addition, the water mixture controller
The water mixture adjustment by 50 can be performed so that the initial position at the normal time is set at an intermediate fixed position where hot water and low temperature water are appropriately mixed.

[0013]

According to the hot water supply apparatus of the first aspect of the present invention, the controller of the hot water supply apparatus has a heating can for supplying hot water to the bathtub when a command to supply the low temperature water is given. Since the heating by the body is held in a stopped state and the water mixture controller is configured to control the temperature of the water mixture to the bath set temperature, it is commanded to supply low temperature water to the bath immediately after hot water supply. Even in such a case, the inflow to the bathtub is performed by gradually changing from the hot water at the bath set temperature to the low temperature water, and it is possible to eliminate the drawback that the residual high temperature water flows into the bathtub at a high temperature. In addition,
According to the hot water supply device of claim 1, during the bath warming operation, the water mixture controller substantially fully opens the hot water outlet pipe side except in the very beginning of the bath warming operation. Even if the hot water is switched to the general hot water supply, it is possible to prevent additional low-temperature water from being added at the initial stage of the general hot water supply, and the hot water at the set temperature can be quickly supplied to the general hot water.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a hot water supply device of the present invention.

FIG. 2 is a diagram showing a relationship between a hot water temperature in a hot water outlet pipe and a hot water temperature flowing into a bathtub through a water mixture controller during a bath warming operation.

[Explanation of symbols]

 1 Bathtub 10 Heating can body for hot water supply 20 Water inlet pipe 30 Hot water outlet pipe 40 Bypass pipe 50 Water mixing controller 60 Hot water supply pipe 62 General hot water supply pipe 63 Bath automatic hot water supply pipe 100 Controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Kaiji 32 Akashi-cho, Chuo-ku, Kobe-shi, Hyogo Stock company Noritsu (72) Inventor Tatsuhiko Yoshida 32 Akashi-cho, Chuo-ku, Kobe, Hyogo Stock company In Noritz

Claims (1)

[Claims] 1. A heating can body for hot water supply, a water inlet pipe for supplying low temperature water to the heating can body for hot water supply, a hot water outlet pipe for discharging hot water from the heating can body for hot water supply, and a branch from the water inlet pipe. At least a bypass pipe, a water mixture controller for adjusting the mixture ratio of low-temperature water from the bypass pipe and hot water from the hot water pipe and sending it to the hot water supply pipe, and a controller for controlling each part of the device, A hot water supply device comprising a bath automatic hot water supply pipe as a hot water supply pipe in addition to a general hot water supply pipe, and hot water or low temperature water can be automatically supplied to a bathtub through the bath automatic hot water supply pipe, wherein the controller is a bathtub. When the low temperature water supply to the hot water supply is instructed, the heating by the hot water supply heating can body is held in a stopped state and the water mixture controller is controlled in such a direction that the water mixture temperature becomes the bath set temperature. Hot water supply device.