JPH02238226A - Hot water feed device with hot water bath-feeding function - Google Patents

Abstract

PURPOSE:To allow a quantity of hot water flowing out from a hot water opening not to lower during hot water feeding from a plug even if the hot water is allowed to flow out to accumulate in a bath by providing a hot water bath-feeding waiting means for waiting hot water bath-feeding until a hot water feed detection means detects the stop of the hot water feeding in the case where a hot water bath-feeding instruction means receives an instruction for performing the hot water bath-feeding during a period at which the hot water detection means is detecting hot water feed. CONSTITUTION:When a hot water bath-feeding instruction means is switched on in a condition to feed hot water, the indication of hot water bath-feeding is displayed in a display means of a controller 24. In this case, when a quantity of the hot water detected by a water flow sensor 53 is in a condition to exceed a specified quantity of water (2-3l) (during hot water feeding), a close valve is in a condition to switch off. When a plug is closed or the opening of the plug is lessened and the hot water does not reach the specified water quantity (2-3l) (hot water feeding stop), the waiting condition of the hot water bath-feeding is released. In other word, since the hot water feeding is stopped to perform the hot water bath-feeding even if the instruction of hot water bath-feeding start is performed, the quantity of the hot water allowed to flow out from the plug is not lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field in Icheon] The present invention relates to a water heater with a hot water filling function that fills a bathtub with hot water through a hot water filling passage branching off from a hot water supply passage.

[Prior art] As a means for filling a bathtub with hot water, a hot water filling passage capable of supplying hot water to the bathtub is connected to a hot water supply passage of a water heater, and by opening the hot water filling passage, the hot water is heated to °C by a heating means. There is a technology to supply hot water to the bathtub.

[Problems to be Solved by the Invention] However, since the water heater with the hot water filling function described above guides the hot water heated by the heating means to the hot water supply opening or the bathtub, it is difficult to connect the hot water supply opening and the bathtub to each other. Therefore, it is not possible to introduce a large amount of hot water. In other words, since there is only one hot water source, if hot water is supplied to multiple locations, the amount of hot water supplied to each location will decrease.

In addition, in water heaters with a hot water filling lfi function that allows you to set the hot water filling temperature and the hot water supply temperature separately, when hot water supply and hot water filling are performed at the same time, hot water at different temperatures is supplied to the bathtub and hot water inlet. I can't. That is, specifically, there is a problem in that while hot water of, for example, 60° C. is being supplied from the hot water supply port, hot water of 40 to 45° C. cannot be simultaneously supplied to the bathtub.

Furthermore, some of the above-mentioned water heaters with a hot water filling function are equipped with an automatic hot water filling function. This automatic hot water filling function
Generally, a water flow sensor is provided in a hot water supply path upstream of a branch path from a hot water filling path, and a predetermined amount of hot water counted by the water flow sensor is supplied to the bathtub via the hot water filling path.

With this automatic hot water filling function, when the pot is opened during automatic hot water filling and hot water supply starts from hot water supply [1], the amount of hot water supplied from the hot water supply opening is also counted by the water amount sensor. For this reason,
If hot water filling and hot water supply are performed at the same time, the amount of hot water filled becomes unknown, and a predetermined amount of hot water cannot be supplied to the bathtub.

The present invention has been made in view of the problems mentioned in -1-, and its purpose is to provide a hot water filling function that does not cause a decrease in the amount of hot water that comes out of the faucet even when hot water is filled while hot water is being supplied from the faucet. We provide hot water heaters with water heaters.

[Means for Solving the Problems] In order to achieve the above object, the water heater with hot water filling function of the present invention employs the following technical means. Figure 1 shows the construction of this water heater with hot water filling function. A water heater with a hot water filling function includes a heating means 1 for heating water;
A hot water supply passage 2 for guiding the hot water heated by the 1,000 heating stages 1 to the hot water supply port 2a, and a hot water supply passage 2 branching from the hot water supply passage 2 for guiding the hot water heated by the heating means 1 to the bathtub 3. A passage 4, a locking means for opening the hot water filling passage 4, and a hot water supply detecting means 6 for detecting the hot water supply from the hot water supply port 2a and the stoppage of the hot water supply, and a hot water supply system that receives an instruction to fill hot water. A control circuit 8 is provided which controls at least the opening/closing means 5 and opens/closes the hot water filling passage 4.

Then, when the hot water filling instruction means 7 receives an instruction to fill hot water while the hot water supply detection stage 6 is detecting hot water supply, the control circuit 8 of the water heater with a hot water filling function controls the hot water supply A hot water filling standby means 9 is provided which waits for hot water filling until the detection stage 6 detects the stop of hot water supply.

Note that filling the bathtub with hot water means supplying hot water to the bathtub. Furthermore, the termination of hot water supply in the present invention is considered to include a case where the amount of hot water supply is less than a predetermined amount. Furthermore, hot water filling instruction means 7
Examples of when a user receives an instruction to fill the hot water include when the user manually operates the hot water directly, when a preset time has been reached based on a reservation, or when the bath is remotely operated by a communication means such as a telephone.

[Operations] The present invention operates as follows by being configured as described above. While supplying hot water from the hot water supply inlet,
The hot water filling instruction means instructs the hot water to be filled. Then,
The hot water filling standby means of the control circuit waits for hot water filling until the hot water supply detection means detects that the hot water supply has stopped. Then, after stopping the hot water supply, the opening/closing means is opened to fill the hot water.

[Effects of the Invention] As explained above, the present invention provides the following advantages:
Perform thirst quenching after the hot water supply has stopped. Therefore, even if hot water is filled while hot water is being supplied from the faucet, the amount of hot water that comes out from the hot water supply spout will not decrease.

[Example] Next, a water heater with a hot water filling function of the present invention will be described based on an example shown in the drawings.

FIG. 2 shows a schematic diagram of a water heater with a hot water filling function.

This water heater with a hot water filling function is broadly divided into a thousand hot water supply stages 10 and a control circuit 20 for operating the hot water supply means 10. In addition, the 1000-stage hot water supply 10 includes a combustion section 30, a gas supply pipe 40, and a water pipe 50.The six combustion sections 30, together with a heat exchanger 51 described below, form the heating means of the present invention. It is. The combustion section 30 is composed of a combustion case 32 made of pressed stainless steel plates, for example, in which stacked burners 31 are arranged, and a blower 33 that supplies air for combustion into the combustion case 32. . Blower 3
After combustion, the air introduced into the combustion case 32 by the combustion chamber 3 is discharged from the exhaust port 34 as combustion gas. In addition, near the burner 31, there is a burner 35 for igniting the gas,
A flame rod 36 for detecting flame and a thermocouple 31 for detecting air-fuel ratio are attached. Further, an air volume detection sensor 38 (see FIG. 3) is attached to the blower 33 to detect the rotational speed of the blower 33.

The gas supply pipe 40 supplies fuel gas to nozzles 41 formed corresponding to each opening of the burner 31.
- A main solenoid valve 42, a main solenoid valve 43, and a proportional valve 44 are provided in this order. Further, the gas supply pipe 40 of the proportional valve 44 is provided so as to be branched into two, and a switching solenoid valve 45 is provided on one of the branches. Gendenbenben 42
, the main solenoid valve 43 and the switching solenoid valve 45 open the gas supply pipe 40 when energized, and open the gas supply pipe 40 when the energization is stopped. Moreover, the proportional valve 44 is
The aperture ratio changes depending on the amount of current applied, and the amount of gas supplied to each nozzle 41 is adjusted. One end of the water pipe 50 is connected to a water supply source 50a, and the other end is connected to a hot water inlet 50b connected to each faucet. The water pipe 50 includes a heat exchanger 51 that exchanges heat generated by combustion of gas within the combustion case 32 with water flowing inside. Upstream of the heat exchanger 51, a heat exchanger 5
an electric water flow control device 52 that controls the amount of water flowing into the heat exchanger 51 according to the amount of electricity supplied; a water flow sensor 53 that detects the amount of water flowing into the heat exchanger 51; A sensor 54 is provided.

The water amount sensor 53 includes a rotating body that is rotated by the water flowing in the water pipe 50 and a signal generator that generates a pulse signal according to the rotation of the rotating body. And water sensor 53
The output is output to the control device 20 and used as data for determining the combustion amount. Further, the output of the water amount sensor functions as the hot water supply detection means of the present invention. In other words, in this example,
When the output of the water flow sensor 53 is set to a predetermined amount of water N (for example, 2-3 fJ
/m), combustion starts and hot water is supplied.

Therefore, it is possible to detect whether hot water is being supplied or not based on the output of the water sensor 53. Note that since the hot water supply state can also be determined based on the control state by the control device 20, a hot water supply detection means may be provided in the microcomputer 21 described below.

Further, the water pipe 50 from the downstream side of the heat exchanger 51 to the hot water supply port 5ob is the hot water supply passage 55 of the present invention. The hot water supply passage 55 is provided with a hot water outlet temperature sensor 56 that detects the temperature of the hot water that has passed through the heat exchanger 51. The hot water supply passage 55 downstream of the hot water outlet temperature sensor 56 is provided with a hot water filling passage 57 branching off. The downstream side of the hot water filling passage 57 is provided in the inner wall of the bathtub 60 either blindly or with an opening so that hot water can be supplied into the bathtub 60. The hot water filling passage 57 is provided with an on-off valve 58 that opens and closes the hot water filling passage 57. This on-off valve 58 opens the hot water filling passage 57 when energized and closes the hot water filling passage 57 when the energization is stopped. Note that the on-off valve 58 may be replaced by a three-way switching valve provided at the branching portion between the hot water supply passage 55 and the hot water filling passage 57.

Further, a water flow switch 59 is provided in the hot water supply passage 55. This water flow switch 59 is turned on by the water flow generated when a switch connected to the hot water supply passage 55 is opened.
5, it turns on when a water flow of approximately 61/m or more occurs. Next, the control circuit 20 will be explained.

The control circuit 20, as shown in FIG. Depending on the output of the sensor 38, water flow rate sensor 53, incoming water temperature sensor 54, outlet temperature sensor 56, water flow switch 59), each of the above-mentioned driving means (blower 33, sparker 35, main solenoid valve 42, main solenoid valve) 43, proportional valve 44, switching solenoid valve 45
, the electric water flow control device 52, and the on-off valve 58). Note that numerals 25 and 26 shown in the figure are potentiometers for detecting the opening degrees of the electric water flow control device 1152 and the on-off valve 58, respectively. Note that the controller 24
is equipped with a hot water filling instruction stage 24a for receiving hot water filling instructions. The hot water filling instruction means 24a of this embodiment includes a manual operation means directly manually operated by the user, a reservation operation means for filling the hot water at a preset time, and an HA (home automation) output input via a telephone line. It is equipped with a remote control means etc. for filling hot water, and outputs a hot water filling ON signal to the control circuit 20 when the hot water filling is instructed. The controller 24 also includes the operating status R of the water heater with hot water filling function (e.g., hot water supply in progress, hot water filling in progress, hot water supply temperature, hot water filling temperature, hot water filling reservation time, current time,
A display 24b is provided to display the addition bath T) to the user.

The microcomputer 21 is programmed with the hot water filling standby means 21a of the present invention. An example of this 1,000-stage waiting step 21a for filling with hot water will be explained based on the flowchart 1 in FIG.

In step S1, a determination is made as to whether or not the ten-stage hot water filling instruction 24a is turned on. If the result of this determination is NO, the process returns to step S1. Further, if the determination result in step S1 is YES, in step S2, the display means 24b indicates who is filling the water. Next is Sudep S
In step 3, it is determined whether the output of the water amount sensor 53 is a flow "1 or more" for hot water supply operation. If the determination result in step S3 is YES, the process returns to step S3. Also,
If the determination result in step S3 is No, automatic hot water filling processing is performed in step S4. This automatic hot water filling process refers to a process of controlling the blower 33, proportional valve 44, etc. of the hot water supply means 10 so that hot water at the hot water filling temperature set by the controller 24 is supplied into the bathtub. Then, in a step not shown below, the on-off valve 58 is energized to open the hot water filling passage, and then the amount of water counted by the aquascape sensor 53 is increased to a predetermined amount (for example, 180.11
), automatic hot water filling stops.

Next, the operation of the hot water filling standby means 21a will be briefly explained.

When the user opens the collar connected to the hot water supply passage 55 and the amount of water detected by the water flow sensor 53 exceeds a predetermined water level (2 to 1), combustion for hot water supply starts. The combustion amount is calculated by feedforward from the incoming water temperature, set temperature, and amount of incoming water, and is also feedback-corrected based on the outgoing water temperature so that hot water is obtained at the outgoing hot water temperature set in advance in the controller 24. As a result, hot water at the outlet temperature set in the controller 24 is discharged from the opened faucet via the hot water supply passage 55 and the hot water supply opening 50b. In this hot water supply state, when the hot water filling instruction step 24a is turned on,
A message indicating that hot water is being filled is displayed on the display 24b of the controller 24. However, when the amount of water detected by the water flow sensor 53 exceeds the predetermined water level 1 (2 to 3 N) (during hot water supply), the on-off valve 58 is turned off.

Note that the hot water supply means 10 is controlled so that the hot water temperature set in the controller/roller 24 is obtained when the hot water filling instruction means 24a is ON during hot water taping.

Then, the clicker closes or the opening degree of the clicker becomes smaller, and the amount of water detected by the water flow sensor 53 changes from the predetermined water level to (2).
~3ρ) is no longer reached (hot water supply is stopped), the hot water filling standby state is released. That is, the hot water supply means 10 is controlled so that hot water at the hot water filling temperature set in the controller 24 is supplied to the bathtub 60, and the on-off valve 58 is turned ON.
, filling of the bathtub 60 with hot water is started.

Note that when filling with hot water is started, the amount of water supplied to the heat exchanger 51, that is, the amount of water supplied to the bathtub 6, is determined by the output of the water amount sensor 53.
A microcomputer 21 counts the amount of hot water supplied to the tank. When the amount of hot water supplied to the bathtub GO reaches a predetermined amount, the on-off valve 58 is set to 0 "1.
When the water is turned to OrF, the flow of water in the water pipe 50 stops.

Then, the water flow sensor 53 no longer detects the water flow, and combustion is stopped. In this embodiment, even if the door connected to the hot water supply passage 55 is opened, the amount of water flowing through the hot water supply passage 55 is 6.
If the water flow rate is less than 6β/m, the water flow switch 59 is OFF, so the control circuit 20 determines that the hot water supply from the hot water supply port is in a stopped state.9 Therefore, the amount of water flowing through the hot water supply passage 55 is 6β/m.
If it is less than 1, hot water filling and hot water supply can be carried out at the same time. In this case, since there is less mercury flowing through the hot water supply passage 55, there is no large error in the amount of hot water filled.

As described above, in this embodiment, even if an instruction to start filling the hot water is given during hot water supply, the hot water is filled after the hot water supply stops +1L. In other words, even if hot water is filled while hot water is being supplied from the faucet, the amount of hot water that comes out from the faucet will not decrease, and hot water at the hot water supply temperature can be supplied from the hot water supply port 50b, and hot water at the hot water temperature can be supplied to the bathtub 60. It can supply hot water. Furthermore, even if the water amount sensor 53 is provided upstream of any branch of the hot water filling passage 57, the amount of hot water filled will not become unclear. In other words, even if an instruction to fill the bathtub 60 is given during hot water supply, a predetermined amount of hot water can be supplied to the bathtub 60. FIG. 5 shows a second embodiment of the present invention. The water heater with hot water filling function of this embodiment has additional heating/heating means 70 in addition to the 1,000-stage hot water supply stage 10, and also has an additional heating means 70 upstream of the heat exchanger 51 and 1.
The bypass water 1i51a connects the flow with the bypass water 1i51a. This bypass waterway 51a includes a bypass waterway 51a.
A bypass control valve 51b is provided to control the amount of water passing through. Then, depending on the opening degree of the bypass control valve 51b, the hot water that has passed through the heat exchanger FIA device 51 and the bypass water @ 5
The hot water temperature is controlled by mixing it with the water passing through 1a. (Modification) Although an example is shown in which a gas water heater is used as the hot water supply means, a water heater that uses other fuels such as kerosene or an electric water heater that uses electricity may also be used. In addition, as with electric water heaters, hot water is stored once,
The present invention may be applied to a hot water storage type hot water supply means that supplies stored hot water.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the configuration of the present invention. 2 to 4 show a first embodiment of the present invention, and a second embodiment of the present invention is shown in FIG.
3 is a block diagram of a water heater with a hot water filling function, FIG. 3 is a block diagram of a control circuit 2I, and FIG. 4 is a flowchart showing an example of the operation of a hot water filling standby stage. FIG. 5 is a schematic diagram of a hot water heater with reheating function showing a second embodiment of the present invention. In the figure 1...Heating means 2a...Hot water supply port 2...
・Hot water supply passage 3... Bathtub 4... Hot water filling passage 5... Open 1ff 1 means 6...
・Hot water supply detection means 7...Hot water filling instruction 1000 steps 8...Control circuit 9...Hot water filling standby means Fig. 4

Claims (1)

[Scope of Claims] 1) (a) A heating means for heating water; (b) a hot water supply passage that guides the hot water heated by the heating means to a hot water supply port; and (c) a water supply passage branching from the hot water supply passage. (d) opening/closing means for opening and closing the hot water filling passage; (e)
A hot water supply detection means for detecting hot water supply from the hot water supply opening and a stop of hot water supply, and a hot water filling instruction means for receiving an instruction to fill hot water, and controlling at least the opening/closing means to open and close the hot water filling passage. In the water heater with a hot water filling function, the control circuit is configured to detect hot water when the hot water filling instructing means receives an instruction to fill hot water while the hot water supply detecting means is detecting hot water supply. A water heater with a hot water filling function, comprising: a hot water filling standby means that waits for hot water filling until the hot water supply detection means detects that hot water supply has stopped.