JP3619917B2 - Automatic hot water bath equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic hot water bath apparatus.
[0002]
[Prior art]
Conventionally, when the automatic operation switch is turned on, after the water leakage of the hopper device is drained, hot water is dropped into the bathtub from the hot water supply device via the hopper device and the bath circuit for reheating, and the amount of pouring water into the bathtub is set. Is known, the automatic hot water bath device that stops the dropping of hot water to reach the set temperature is known, but in the conventional automatic hot water bath device, the dropping electromagnetic wave provided in the hot water supply circuit at the time of hot water filling The opening of the valve and the closing of the air release solenoid valve provided in the air release path of the hopper device are performed at the same time, and the hopper device is drained after filling with hot water. The structure is such that the closing and opening of the open air solenoid valve are performed simultaneously.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional automatic hot water bath apparatus, when the hot water is filled, the dropping solenoid valve is opened and the atmosphere opening solenoid valve is closed at the same time. During the closing operation due to the water flow pressure, the pressure is compressed in the hopper reservoir and the force to push up the atmosphere release valve is generated, so the action of closing the atmosphere release valve becomes dull and the opening of the atmosphere release port is sharp and reliable. Since the sealing performance is unstable, there is a problem that water leakage in the hopper device is remarkable when filling with water.
[0004]
In addition, in the conventional automatic hot water bath apparatus, since water is leaked after filling, the pump is operated until air enters the bath circuit and appliances for reheating and drains after the reheating. However, since it is a so-called self-priming operation, the pump sucks up hot water and cannot immediately enter a reheating operation by circulating hot water.
[0005]
Further, in the conventional automatic hot water bath apparatus, the dropping solenoid valve is closed at the same time as the hot water supply is stopped and the open air solenoid valve is opened at the same time. As a result, the air from the air opening passage of the hopper device enters the bath circuit for reheating and the pump operation starts at the time of reheating. There was a problem that the chasing operation could not be entered immediately and wasted time.
[0006]
An object of the present invention is to provide an automatic hot water bath apparatus that solves the above-mentioned problems, stabilizes the performance of the hopper device during hot water filling, and at the same time, can perform smooth chasing after hot water filling. It is said.
[0007]
[Means for Solving the Problems]
The first automatic hot water bath apparatus of the present invention that solves the above problems is as follows.
According to the hot water filling instruction by turning on the automatic operation switch, the switching valve is switched to the pouring side, the pump is activated for a certain period of time, and the drainage means for draining the water accumulated in the hopper device through the bath circuit in the bathtub,
After the draining operation by the draining means is completed, the drop solenoid valve provided in the hot water supply circuit is opened, and the air release solenoid valve provided in the air release path of the hopper device is closed, and the hopper device and Hot water supply means for dropping hot water into the bathtub through the bath circuit;
When the hot water supply means finishes pouring a set amount of water into the bathtub, the automatic hot water supply is provided with a reheating means for stopping the dropping of hot water and reheating to the set temperature when the hot water in the bathtub is below the set temperature. A bath device,
There is a certain time difference between the opening of the drop solenoid valve and the closing of the atmosphere opening solenoid valve during the filling operation, so that the air in the hopper device is released to the atmosphere during filling and the atmosphere release valve of the hopper device is closed. An opening / closing control means that can be stably performed without being affected by air is employed.
[0008]
The second automatic hot water bath apparatus of the present invention that solves the above problems is as follows.
Drainage in which the air in the bath circuit is replaced with hot water by draining the hopper device by the drainage means in the series of hot water filling operations of the first automatic hot water bath apparatus just before entering the dropping operation of the hot water by the hot water supply means. It is set as the structure provided with the preceding means.
[0009]
A third automatic hot water bath apparatus of the present invention that solves the above problems is as follows.
When the hot water supply is stopped by the hot water supply means in the series of hot water filling operations of the first automatic hot water bath apparatus, the hot water supply circuit is closed after closing the dropping solenoid valve, and then the air release electromagnetic valve is opened to allow air to enter the bath circuit. An opening / closing means for preventing entry is provided.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the automatic hot water bath apparatus of the present invention, when the automatic operation switch is turned on, the switching valve is switched to the pouring side to form a hot water supply path, and then the pump is activated for a certain period of time and accumulated in the hopper reservoir portion of the hopper device. Drainage means to drain the leaked water into the bathtub through the bath circuit,
[0011]
When the drainage operation by the drainage means is completed, the drop solenoid valve provided in the hot water supply circuit is opened, the atmosphere release solenoid valve provided in the atmosphere release path of the hopper device is closed, and the burner of the water heater is Hot water supply means for dropping hot water into a bathtub from a hot water supply device via a hopper device and a bath circuit after starting combustion,
[0012]
When the hot water pouring to the bathtub by the hot water supply means reaches the set amount, the dropping of the hot water is stopped, the switching valve is switched to the additional side, and when the hot water in the bathtub is lower than the predetermined temperature, the hot water is reduced to the predetermined temperature. It has a memorial means.
[0013]
In a series of hot water filling operations by the above drainage means, hot water supply means, and reheating means, a certain time difference is provided between opening of the drop solenoid valve and closing of the atmosphere release solenoid valve, and a certain time after the drop solenoid valve is opened. The air release solenoid valve is closed later to release the air in the hopper device to the atmosphere when the water is filled, and the air release valve of the hopper device can be opened and closed stably without being affected by the air. Control means are provided.
[0014]
Also, in the series of hot water filling operations, draining the water leaking in the hopper reservoir of the hopper device is performed only immediately before entering the hot water dropping operation by the hot water supply means, so that the air in the bath circuit becomes hot water. Provided with a drainage preceding means to be replaced,
[0015]
In addition, when hot water is stopped, it is provided with opening and closing means that closes the drop solenoid valve and then closes the hot water supply circuit with the switching valve as the memorial side, and then opens the air release solenoid valve to prevent air from entering the bath circuit. ing.
[0016]
The various operations are automatically controlled by a controller according to a predetermined program.
[0017]
As the hopper device, a valve body that is integrally provided with an air release valve and a pressure receiving body that receives a water pressure from the hot water supply circuit is provided in the valve chamber, and this is advanced and retracted by the water pressure to open and close the hot water supply circuit. The hopper reservoir can be connected to and shut off from the atmosphere, and a hopper reservoir is provided in the lower part of the hopper reservoir to collect water leaked from the atmosphere opening port that is opened and closed by the atmosphere release valve. The inside of the hot water supply circuit is maintained at atmospheric pressure by using a structure having an open air passage that leads to it. Further, a motor-driven two-way valve is used as the switching valve.
[0018]
Although an example of the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and can of course be implemented in various forms without departing from the gist of the present invention. .
[0019]
In order to further clarify the configuration and the embodiment of the present invention described above, an embodiment specifically showing the automatic hot water bath apparatus of the present invention will be described below with reference to the drawings.
[0020]
【Example】
1 to 3, the automatic hot water bath apparatus includes a hot water supply apparatus A, a reheating apparatus B, a hopper apparatus D provided in the hot water supply circuit C, a pump P provided in the bath circuit E, a hot water supply circuit C, and a bath circuit E. The switching valve V provided in the connecting portion is configured as a main functional portion, and has a controller (not shown) for controlling these operations.
[0021]
The hot water supply apparatus A includes a water supply pipe 1 to which cold water is supplied, a heat exchanger 2 connected to the water supply pipe 1, a hot water supply pipe 3 connected to the downstream side of the heat exchanger 2, and a heat exchanger 2. It is composed of a burner 4 that heats, and heat is exchanged while the cold water from the water supply pipe 1 flows through the heat exchanger 2 that is heated by the burner 4, and becomes hot water of a predetermined temperature and is sent to the hot water supply pipe 3. The hot water supply pipe 3 is branched from the middle and divided into a hot water supply circuit C and a general hot water supply circuit 6. The hot water supply apparatus A of the embodiment is a mixing type in which a water supply pipe 1 and a hot water supply pipe 3 are connected by a bypass pipe 5.
[0022]
The hot water supply circuit C branched from the middle of the hot water supply pipe 3 is composed of a first hot water supply pipe 7 and a second hot water supply pipe 8, and a hopper device D (described later) that maintains this circuit at atmospheric pressure has the first hot water supply pipe 7 and the second hot water supply pipe 7. A drop electromagnetic valve 9 that is interposed between the hot water supply pipe 8 and opens and closes the circuit is provided in the first hot water supply pipe 7 and connected to a chasing device B described later. On the other hand, an external hot water supply pipe 11 communicating with a hot water supply port 10 such as a washroom or a shower is connected to the general hot water supply circuit 6 branched from the middle of the hot water supply pipe 3. In the figure, 12 is a hot water tap and 1a is a water inlet.
[0023]
The chasing device B forms a bath circuit E composed of an outward pipe 14 and a return pipe 15 connected at one end to the bus adapter 13a of the bathtub 13 and connected at the other end to the circulation pump P. 14 is provided with a heat exchanger 17 heated by a burner 16, and is connected to a return pipe 15 of the bath circuit E and a second hot water supply pipe 8 of the hot water supply circuit C at a motor drive type. A switching valve V is provided, and the switching valve V is provided with two-way valves 35 and 36 having three ports, and by moving forward and backward by the motor M, the flow path can be filled with water, drained, and recharged. Yes.
[0024]
The return pipe 15 of the bath circuit E is provided with a bypass passage 19 having a check valve 18 across the motor-driven switching valve V. When the hot water is filled, the bypass pipe 19 is communicated with the hot water supply circuit C and travels through the hot water passage. Hot water can be poured with two pipes of a pipe 14 and a return pipe 15.
[0025]
The hopper device D includes a valve chamber 21 and a hopper reservoir 22 with the partition wall 20 interposed therebetween, and the first hot water supply pipe 7 of the hot water supply circuit C is connected to the upper portion of the valve chamber 21. A valve body 26 integrally provided with an air release valve 24 that opens and closes the air release port 23 provided in the air and a pressure receiving body 25 that receives the water pressure from the hot water supply circuit C urges the pressure receiving body 25 toward the inflow side by the spout 27. The air opening 23 is opened and closed by advancing and retreating by the water flow pressure. The second hot water supply pipe 8 of the hot water supply circuit C is connected to an edge cut chamber 28 formed around the valve body 26 via a first check valve 29.
[0026]
Further, the hopper reservoir portion 22 includes an air release pipe 30 that communicates with the outside air and a drain pipe 31 that communicates with the second hot water supply pipe 8, and the air release pipe 30 includes an air release electromagnetic valve 32. The drain pipe 31 is provided with a third check valve 33, and the second hot water pipe 8 is provided with a second check valve 34 on the downstream side of the connection portion with the drain pipe 31.
[0027]
In the above configuration, automatic hot water supply control, reheating control, and time difference control between the opening of the dropping solenoid valve and the closing of the atmosphere opening solenoid valve during hot water filling, which is a feature of the present invention, and the preceding drainage control, dropping when the hot water filling is stopped Open / close control for opening the air release solenoid valve after closing the built-in solenoid valve is performed by a controller (not shown), and the controller includes a CPU, RAM, ROM, input interface, output interface, etc. that constitute a known arithmetic logic circuit Consists of
[0028]
Next, control processing of the automatic hot water bath apparatus of the present invention will be described below with reference to the flowchart of FIG.
[0029]
In response to a hot water filling instruction by turning on the automatic operation switch (S10), first, the two-way valves 35 and 36 of the switching valve V move to the pouring side (right side in the figure) to form a hot water supply path, and then the pump P is activated (S11). Therefore, as shown in FIG. 3, the water leak a accumulated in the hopper reservoir 22 of the hopper device D is caused by the suction force of the pump P to the drain pipe 31 → second hot water pipe 8 → switching valve V → return pipe. 15 → Pump P → Heat exchanger 17 → Draining to the bathtub 13 through the outgoing pipe 14 This draining operation ends in a certain time (for example, about 3 seconds) from when the pump P is started to when it is stopped (S12). At this time, since the check valve 18 is provided in the bypass passage 19, there is no inflow of hot water from the return pipe 15, and drainage is performed smoothly. This drainage operation drains all the leaked water a in the edge cut chamber 28 of the hopper device and the hopper reservoir 22, so that there is no fear of freezing.
[0030]
When the draining operation is completed, the drop solenoid valve 9 provided in the first hot water supply pipe 7 of the hot water supply circuit C is opened (S13), the burner 4 of the hot water supply device A starts to burn, and the hopper device D The atmosphere release solenoid valve 32 provided in the atmosphere release pipe 30 is closed (S14), and the hot water supply system is entered. As shown in FIG. Dropping solenoid valve 9 → hopper device D → second hot water supply pipe 8 → switching valve V → return pipe 15 branches one to heat exchanger 17 → outward pipe 14 and the other to bypass path 19 → return pipe 15 Hot water is poured in the path, that is, the two main pipes, that is, the forward pipe 14 and the return pipe 15, so that the low pressure loss and the hot water supply time can be reduced. At this time, the air release solenoid valve 32 is closed, and water leakage from the air release port 23 is stored in the hopper reservoir 22, so there is no water leakage to the outside. The pouring of the hot water supply operation described above is performed by, for example, water pressure.
[0031]
When the pouring to the bathtub 13 reaches the set amount by the hot water supply operation (S15: YES), the dropping electromagnetic valve 9 is closed and the pouring is stopped (S16). Thereafter, the two-way valves 35 and 36 of the switching valve V are moved to the tracking side (the left side in the drawing) to form a tracking path (S17), the atmosphere release solenoid valve 32 is opened (S18), and the pump When P is activated (S19) and the hot water in the bathtub 13 is equal to or lower than the set temperature (S20: NO), the burner 16 burns and starts a chasing operation (S21). Therefore, as shown in FIG. 1, the hot water in the bathtub 13 is heated and circulated through the return path of the return pipe 15 → the switching valve V → the pump P → the heat exchanger 17 → the forward pipe 14 to reach the set temperature. Then (S22: YES), combustion of the burner 16 is stopped (S23), the pump P is also stopped (S24), and the chasing operation is finished.
Thus, a series of hot water filling operations is completed (S25). If the hot water poured into the bathtub 13 is equal to or higher than the set temperature (S20: YES), the reheating operation is not performed, the pump P is stopped (S24), and a series of hot water filling operations are completed ( S25). In the chasing operation, the three check valves 29, 33, 34 reliably prevent the backflow water leakage to the hopper device D.
[0032]
After opening the dropping solenoid valve 9 after opening the dropping solenoid valve 9 and closing the atmosphere opening solenoid valve 32 after completion of the draining operation in the series of hot water filling operations, the dropping solenoid valve 9 is opened (S13), and then for a certain period of time. After that (for example, after 1 second), the atmospheric release solenoid valve 32 is closed (S14), and when the drop solenoid valve 9 is opened and hot water is passed through, the valve body 26 of the hopper device D is passed by the water flow pressure. Is pushed down, the atmosphere opening valve 24 closes the atmosphere opening 23, and then the atmosphere opening electromagnetic valve 32 is closed. Therefore, when the valve body 26 is lowered, the air in the hopper reservoir 22 escapes from the atmosphere release path 30 to the atmosphere, and therefore the closing operation of the atmosphere release valve 24 is performed sharply and reliably without being affected by the air. Since the operation is stable, hot water does not leak from the atmosphere opening 23.
[0033]
Also, the switching operation of the switching valve V to the pouring side in the series of hot water filling operations, the start of the pump P (S11), and the drainage operation by the stop of the pump P after a predetermined time (S12) immediately before the hot water filling. Only the hot water filling operation (S13) and (S16) performed immediately after the air that has entered the appliance and the bath circuit E by the drainage is purged with hot water and purged. Even when (S19) is performed, since the operation of the pump P does not have a so-called self-priming operation and does not require time for self-priming, it immediately shifts to combustion (S20), (S21), reheating. Operation can be performed smoothly.
[0034]
Furthermore, at the time of hot water filling stop in the series of hot water filling operations (S15: YES), the drop solenoid valve 9 is closed (S16), and then the hot water supply circuit C is closed with the switching valve V as the remedy side (S17). By opening the air release solenoid valve 32 (S18), since the communication with the atmosphere is closed in the state where the drop solenoid valve 9 is closed, there is no inflow of air. Since the circuit C is closed and the bath circuit E is communicated, air does not enter the bath circuit E. Therefore, the operation of the pump P at the time of the next pursuit operation does not require a so-called self-priming operation and does not require time for self-priming, so that it immediately shifts to combustion (S20), (S21), and the pursuit operation. Can be done smoothly.
[0035]
As described above, in the automatic hot water bath apparatus of the present embodiment, since the electromagnetic valve 9 is dropped when the hot water is filled and the electromagnetic valve 32 is only closed after a certain period of time, the number of parts is increased. In addition, the air release valve in the hopper device can be stably operated, and only drainage is performed immediately before filling with water, so that the subsequent refueling operation can be performed quickly and the renewal time can be shortened. When the hot water supply is stopped, the solenoid valve 9 is closed, the hot water supply circuit D is closed, and then the air release solenoid valve 32 is opened. Therefore, the subsequent chasing operation is performed quickly without increasing the number of parts. It is possible to reduce the time required for tracking.
[0036]
【The invention's effect】
The first automatic hot water bath apparatus of the present invention described above provides a hopper by shifting the opening and closing timing by providing a certain time difference between the opening of the dropping electromagnetic valve and the closing of the atmosphere opening electromagnetic valve during hot water filling. Since the air is not affected by the operation of the air release valve of the apparatus and is stable, water leakage in the hopper apparatus during hot water filling is eliminated.
[0037]
In addition, since the second automatic hot water bath apparatus of the present invention drains water just before filling with hot water, the air that has entered the bath circuit or the like by the drainage is replaced with hot water, so that the subsequent chasing operation is smooth. It can be done in a short time and the chasing time can be shortened.
[0038]
Furthermore, the third automatic hot water bath apparatus of the present invention closes the hot water supply circuit after closing the dropping solenoid valve when hot water is stopped, and then opens the air release solenoid valve, so that air does not enter the bath circuit. The subsequent chasing operation can be performed smoothly and the chasing time can be shortened.
[0039]
The automatic hot-water bath apparatus of the present invention is an excellent invention that can achieve the intended purpose without having to make a large-scale configuration because it only opens and closes the valve at a predetermined timing and performs drainage.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic configuration diagram of the entire reheating operation showing an embodiment of an automatic hot water bath apparatus of the present invention.
FIG. 2 is a schematic configuration diagram of only a main part during filling.
FIG. 3 is a schematic configuration diagram of only a main part during drainage.
FIG. 4 is a flowchart showing a series of hot water filling operations.
[Explanation of symbols]
A ... Hot water supply device, B ... Reheating device, C ... Hot water supply circuit, D ... Hopper device, E ... Bath circuit, V ... Switching valve, P ... Pump, 13 ... Bathtub, 9 ... Drop solenoid valve, 32 ... Open to atmosphere solenoid valve.

Claims (3)

According to the hot water filling instruction by turning on the automatic operation switch, the switching valve is switched to the pouring side, the pump is activated for a certain period of time, and the drainage means for draining the water leaking in the hopper device through the bath circuit in the bathtub,
After the draining operation by the draining means is completed, the drop solenoid valve provided in the hot water supply circuit is opened, and the air release solenoid valve provided in the air release path of the hopper device is closed, and the hopper device and Hot water supply means for dropping hot water into the bathtub through the bath circuit;
When the hot water supply means finishes pouring a set amount of water into the bathtub, the automatic hot water supply is provided with a reheating means for stopping the dropping of hot water and reheating to the set temperature when the hot water in the bathtub is below the set temperature. A bath device,
A certain time difference is provided between the opening of the dropping solenoid valve and the closing of the atmospheric release solenoid valve during the hot water filling operation, so that the air in the hopper device is released to the atmosphere when the hot water is filled and the atmospheric release valve of the hopper device is closed. An automatic hot-water bath apparatus comprising an opening / closing control means that can be stably performed. The hopper device drainage by the drainage means in the series of hot water filling operations according to claim 1 is provided only before the start of the hot water dropping operation by the hot water supply means, and the drainage preceding means for replacing the air in the bath circuit with hot water is provided. An automatic hot water bath apparatus characterized by that. When hot water is stopped by the hot water supply means in the series of hot water filling operations according to claim 1, the hot water supply circuit is closed after closing the dropping solenoid valve, and then the air release solenoid valve is opened to prevent air from entering the bath circuit. An automatic hot water bath apparatus comprising an opening / closing means.

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