JPH058338U - Flow path switching device - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce discomfort caused by cold water inflow at the start of reheating. [Structure] Inserted near the bathtub 2 in the middle of a water absorption pipe 3 and a water supply pipe 4 that connect the reheating device 1 and the bathtub 2,
The flow path is switched by the three-way valve 17 according to the water flow detection.
That is, during the predetermined period from when the water flow was detected,
The circulating water sent from the reheating device 1 is bypass pipe 1
8, the bathtub 2 is circumvented, and after a lapse of a predetermined period, the bypass pipe 18 is closed to open a flow path to the bathtub 2 to perform normal circulation heating of bath water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a forced circulation type reheating device provided to reheat bath water. The present invention relates to a switching device that switches a circulating flow path of circulating water.

[0002]

[Prior art]

  Conventionally, forced circulation type reheating devices have been used to reheat bath water. It This reboiler is a bathtub with two circulation pipes, one for water absorption and the other for water transmission. Connect it, pump up the bath water from the water absorption pipe with a circulation pump, and gas in the heating circuit. It is heated by combustion and returned to the bathtub again through the water supply pipe. That is, bathtub water Is circulated in the flow path of bathtub → water absorption pipe → heating circuit → water supply pipe → bathtub. It Therefore, the circulating heating can raise the temperature of the bath water.

[0003]

[Problems to be solved by the device]

  However, in the above-mentioned reheating device, cold water is generated at the start of the reheating operation. May flow into bathtub. Because it is collected in the water absorption pipe and the water transmission pipe. The circulating water (bath water absorbed from the bath tub) is cooled by the outside air. This is because cold water flows into the bathtub as it is. The circulating water in the water absorption pipe is cold If there is a problem, it will be heated in the heating circuit, so there will be no problem, but the water distribution If the circulating water in the pipe is cold, it will not be heated and the cold water will flow in directly. Of. In addition, the heating of the heater is delayed at the start of heating, and cold water is sent for a certain period. Will be sent to the piping.

[0004]   For this reason, if the controller's reheating switch is turned on while bathing, cold water will be generated. It flowed into the bathtub and was very uncomfortable for the user.   The present invention aims to solve the above problems and reduce discomfort at the start of reheating. To do.

[0005]

[Means for Solving the Problems]

  In order to solve the above problems, the first flow path switching device of the present invention is   Near the bathtub for water absorption pipes and water pipes that connect the forced circulation type reheating device to the bathtub. A flow that switches the circulating flow path of circulating water, provided on the side or in the bus adapter. A road switching device,   A bypass flow path that connects the water absorption pipe and the water supply pipe,   The circulating water sent from the forced circulation type reheating device through the water supply pipe is Ordinary mode to send it to the bathtub side as it is, and bypass the bathtub via the bypass flow path above. It has a bypass mode to send it to the above water absorption pipe and switches these modes. Mode switching means,   While detecting the flow of circulating water sent from the forced circulation type reheating device, The mode switching means is set to the detour mode for a predetermined period after the water flow is detected. Mode setting means   The summary is that

[0006]   The second flow path switching device of the present invention is   Near the bathtub for water absorption pipes and water pipes that connect the forced circulation type reheating device to the bathtub. A flow that switches the circulating flow path of circulating water, provided on the side or in the bus adapter. A road switching device,   A bypass flow path that connects the water absorption pipe and the water supply pipe,   The circulating water sent from the forced circulation type reheating device through the water supply pipe is Ordinary mode to send it to the bathtub side as it is, and bypass the bathtub via the bypass flow path above. It has a bypass mode to send it to the above water absorption pipe and switches these modes. Mode switching means,   Depending on the temperature of the circulating water sent from the forced circulation type reheating device, its circulation Mode setting means for setting the mode switching means to the bypass mode when the water temperature is low When   The summary is that

[0007]

[Action]

  The flow path switching device of the present invention having the above-described structure is used for water absorption pipes and water supply near the bathtub. Switch the circulation channel of circulating water by installing it in the middle of piping or in the bus adapter. A bypass flow path that connects the water absorption pipe and the water transmission pipe is provided. When the bypass mode is switched by the switching means, the forced circulation type reheating device is used. The circulating water sent from the storage unit through the water supply pipe is passed through this bypass flow path to the bathtub. It bypasses and sends it to the water absorption pipe, and forced circulation when it is switched to the normal mode. Circulating water from the ring-type reheating device is sent to the bathtub without bypassing.

[0008]   In this case, in the first flow path switching device of the present invention, the mode setting means has the forced circulation type additional device. Whether the flow of circulating water sent from the water heater is detected and the water flow is detected Then, the mode switching means is set to the bypass mode for a predetermined period. Therefore, forced circulation type follow-up When the water heating device starts and circulating water begins to flow, the bypass mode is set and the forced circulation type additional The circulating water sent out from the water heating device does not flow into the bathtub and passes through the bypass flow path. Therefore, it is sent to the water absorption pipe. In other words, the circulating water bypasses the bathtub and the water supply pipes and suction pipes. It circulates between the water pipe and the forced circulation type reheating device, and the addition of the forced circulation type reheating device. It is heated in the thermal circuit. Then, after a lapse of a predetermined period, the mode is switched to the normal mode and the The heated circulating water flows into the bathtub and the circulating heating of the bathwater is started.

[0009]   On the other hand, in the second flow path switching device of the present invention, the mode setting means is the forced circulation type additional heating device. Depending on the temperature of the circulating water sent from the The replacement means is set to the detour mode. Therefore, if the circulating water is at a low temperature, It is sent to the water absorption pipe via the bypass flow path without flowing into the tank. That is , Even if cold water collects in the circulation passage when the forced circulation type reheating device is started, Even if the circulating water becomes cold during operation for some reason, the circulating water does not flow into the bathtub and It is circulated and heated in a flow path that bypasses. The circulating water becomes hot while circulating. Then, the mode is switched to the normal mode and circulation heating of bath water is started.

[0010]

【Example】   In order to further clarify the configuration and operation of the present invention described above, the flow of the present invention will be described below. A preferred embodiment of the road switching device will be described.   FIG. 1 is a schematic configuration diagram of a flow path switching device as a first embodiment, and FIG. It is explanatory drawing showing arrangement.

[0011]   As illustrated, the flow path switching device 10 includes a forced circulation type reheating device 1 (hereinafter, referred to as a single unit). And a bathtub 2 are connected to each other to form a circulation flow path. , Is inserted near the bathtub 2 on the way of the water supply pipe 4. This flow path switching device 10 is For water supply on the side of the bathtub 2 and the first connection port 11 for connecting the water supply pipe 4 on the side of the boiler 1 Connect the second connection port 12 that connects the pipe 4 and the water absorption pipe 3 on the reheating device 1 side. And a fourth connection port 14 for connecting the water absorption pipe 3 on the bathtub 2 side. Get

[0012]   The first connection port 11 and the second connection port 12 are communicated with each other by the water supply connection pipe 15, The connection port 13 and the fourth connection port 14 are communicated with each other by a water absorption connecting pipe 16. Water connection pipe A three-way solenoid valve 17 is provided in the middle of 15. In addition, the water absorption connecting pipe 16 is A bypass pipe 18 branched into a T shape is integrally provided, and an end of the bypass pipe 18 is provided. The part is connected to the three-way solenoid valve 17. 3-way solenoid valve 17 (hereinafter simply referred to as 3-way valve) Has a water inlet 17a, a first water outlet 17b, and a second water outlet 17c, and sends out water. The water outlet is switched by the drive signal from the drive circuit 20. The water supply connection pipe 15 on the reheating device 1 side connects the water supply connection on the bathtub 2 side to the first water outlet 17b. The pipe 15 and the bypass pipe 18 are connected to the second water outlet 17c, respectively. Incidentally, this Water supply connection pipe 15, water absorption connection pipe 16, three-way valve 17, bypass pipe 18, drive circuit 20 is stored in a case (not shown).

[0013]   The water supply connection pipe 15 between the first connection port 11 and the three-way valve 17 is used to detect the flow of circulating water. A water flow switch 19 for outputting is provided and outputs this detection signal to the drive circuit 20. In the drive circuit 20, based on this detection signal, the three-way valve 17 is switched as follows. Get That is, as shown in FIG. 3, the reheating device 1 is activated to start circulating water. When the water flow switch 19 is turned on (time t1) by the The first water outlet 17b of the three-way valve 17 is closed and the second water outlet 17c is opened until t0 elapses. Put in a state. Therefore, the circulating water sent from the reheating device 1 is indicated by the broken line arrow in FIG. As shown in, the water is not sent to the bathtub 2 and is connected to the water absorption connecting pipe 16 via the bypass pipe 18. It is sent and returned to the reheating device 1. That is, the circulating water circulates in the flow path that bypasses the bathtub 2. Circle. Hereinafter, the circulation by this flow path will be referred to as a bypass mode. While circulating in this way The circulating water is heated by the reheating device 1.

[0014]   When a predetermined period t0 has elapsed since the water flow was detected (time t2), the three-way valve 17 was switched. The first water outlet 17b is opened and the second water outlet 17c is closed. Therefore, the solid line in FIG. As shown by the arrow, the circulating water sent from the reheating device 1 is fed to the bypass pipe 18. The water is sent to the bathtub 2 without being sent, and the bathwater is reheated through the water absorption pipe 3 Pumped up to 1, the normal circulation heating of bath water is started. Below this flow path This circulation is called the normal mode. In this case, when switching to the normal mode, the circulation Warm circulating water flows into the bathtub 2 because the water is heated by the detour mode. However, the problem that cold water flows in while taking a bath as in the past is solved. In addition, When switching to the normal mode, the water supply pipe 4 between the three-way valve 17 and the bath 2 is Although the circulating water that has accumulated flows into the bathtub 2 first, the flow path switching device 10 is placed near the bathtub 2. Since it is installed in the bathtub, the amount of circulating water accumulated here is small, and the bath water Since it is close to the temperature, it is hardly affected.

[0015]   Next, a flow path switching device as a second embodiment will be described with reference to FIGS. . This flow path switching device 30 is the water flow switch 19 of the flow path switching device 10 of the first embodiment. Instead of the above, a temperature sensor 31 for detecting the temperature of the circulating water is provided, and the temperature sensor 31 detects the temperature according to the circulating water temperature. It is for switching the road. The description of the same parts as those in the first embodiment will be omitted. , The same reference numerals are given.

[0016]   In this embodiment, a thermistor is used as the temperature sensor 31, but it is determined whether the temperature is equal to or higher than a predetermined temperature. A thermostat whose contacts turn on and off depending on whether or not may be used. Drive circuit 32 On the basis of the detection signal from the temperature sensor 31, the three-way valve 17 is operated as follows. Switch. That is, when the detected circulating water temperature T is equal to or higher than the predetermined temperature T0, the normal mode When the value is less than the predetermined value T0, the bypass mode is set.

[0017]   Now, as shown in FIG. 5, when the reboiler 1 is activated at time t3, the cycle starts. Water begins to circulate, but if the circulating water temperature T at this time is less than the predetermined temperature T0, , Set to the detour mode. That is, the first water outlet 17b of the three-way valve 17 is closed and the second water outlet 17b is closed. The water outlet 17c is opened, and the circulating water sent from the reheating device 1 is put into the bathtub 2. Instead of sending it, send it to the water absorption connecting pipe 16 via the bypass pipe 18 and return it to the reheating device 1. You Therefore, the circulating water is replenished by the circulating water 1 during circulation in the flow path bypassing the bathtub 2. Is heated in.

[0018]   When the circulating water temperature T rises and becomes equal to or higher than the predetermined temperature T0 (time t4), the three directions The valve 17 is switched and the normal mode is set. That is, the first exit of the three-way valve 17 When the water outlet 17b is opened and the second water outlet 17c is closed, the water is sent from the reheating device 1. The circulating water is sent to the bathtub 2 without being sent to the bypass pipe 18, and the bathwater is absorbed for distribution. The circulation heating of the normal bath water which is pumped to the reheating device 1 via the pipe 3 is started. Servant Therefore, the circulating water heated above the predetermined temperature T0 flows into the bathtub 2, The problem of cold water flowing in while bathing is eliminated.

[0019]   Next, a third embodiment will be described with reference to FIGS. This example shows a bathtub 2 and a pipe for water absorption 3, and a pipe for water supply 4 The structure is provided.   This bus adapter 40 connects the water supply pipe 4 and serves as an inlet pipe for circulating water. An inlet pipe 41 and an outlet pipe 42 which connects the water absorption pipe 3 and serves as an outlet pipe portion for bath water, Provided on an extension of the outlet pipe 42 and a bypass pipe 43 that connects the mouth pipe 41 and the outlet pipe 42 The double tube 44 to be formed is integrally formed, and the thermostat type three-way valve 45 is incorporated. It is

[0020]   The double pipe 44 includes an inner pipe 44a integrally extended from the outlet pipe 42, and an inner pipe 44a. The outer diameter of the outer tube 44b is the same as that of the outer tube 44b that is coaxial and has a large diameter. The portion is a surface that curves outward and presses the side wall of the bathtub 2. And the bathtub 2 side wall Aligned with the bus adapter mounting hole of, and insert ring-shaped packings 46, 47 The side wall of the bathtub 2 and fix it by tightening the screw from the side of the bathtub 2 with the mounting member 48. Be done. In addition, a guide tube 49 having a substantially trumpet shape is inserted into the inner tube 44a from the bath 2 side. The circulating water (heated bath water) from the reheating device 1 flows along the inner surface of the bath 2. It is designed to work.

[0021]   The outer pipe 44b of the double pipe 44 penetrates the central wall of the bypass pipe 43 to connect the two. A connecting pipe 50, which is a substantially “U” -shaped cylindrical pipe that passes therethrough, is provided. Bypass pipe 4 The end portion of the connecting pipe 50 in 3 is opened toward the outlet pipe 42 (hereinafter, referred to as the first opening portion 51 and I am calling). Further, the outlet pipe 42 has an opening facing the first opening 51. The second opening 52 is formed.

[0022]   Further, a thermostat type that controls the opening and closing of the first opening 51 and the second opening 52. A three-way valve 45 (hereinafter, simply referred to as a three-way valve) is provided on the connecting pipe 50 in the bypass pipe 43. To be The three-way valve 45 is a spin that fixes the first valve body 45a and the second valve body 45b. The one that moves the dollar 45c by the thermo element 45d according to the ambient water temperature When the circulating water temperature is low, the spindle 45c slides upward in the drawing as shown in FIG. When riding and closing the first opening 51 with the first valve body 45a and the circulating water temperature is high, As shown in FIG. 7, the spindle 45c slides downward in the drawing and the second valve body 45b The second opening 52 is closed.

[0023]   Therefore, when the temperature of the circulating water sent from the water supply pipe 4 is low, the circulating water As shown by the broken line arrow in FIG. Flows into the outlet pipe 42, passes through the water absorption pipe 3 and is sent to the reheating device 1 to be heated. It That is, the detour mode is set.

[0024]   In this way, when the circulating water temperature rises by being circulated and heated by bypassing the bathtub 2, The three-way valve 45 is in the state shown in FIG. 7, and the flow path to the connecting pipe 50 (flow path to the bathtub 2) is While opening, the second opening 52 is closed, and the circulating water flows through the connecting pipes 50, 2 along the solid line arrow. It is sent to the bathtub 2 via the outer pipe 44 b of the heavy pipe 44. At the same time, the bath water should be pumped up The reheating device 1 through the inner pipe 44a of the double pipe 44, the outlet pipe 42, and the water absorption pipe 3 To be heated and then returned to the bathtub 2 through the water supply pipe 4 again. That is, usually The mode is switched to the normal mode for heating the bath water.

[0025]   As described above, according to the bus adapter 40 as the third embodiment, the circulating water is When it is cold, the circulating water sent from the reheating device 1 should be sent to the bathtub 2. A flow path that leads to the bathtub 2 after being sent to the water absorption pipe 3 and the circulating water has reached a high temperature. Since it opens, the problem that cold water flows in while bathing is solved. Moreover, Since the adapter 40 itself has a flow path switching mechanism, it is necessary to separately provide a switching device. It is easy to install without. In addition, the bath adapter used in the existing bath system To replace the problem with the cold water inflow by just replacing the bus adapter 40 of this embodiment it can.

[0026]   Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Instead of a thing, a water flow switch or temperature sensor is installed in the bus adapter to cut the flow path. The configuration may be changed, and various modes are possible without departing from the gist of the present invention. Of course, it can be implemented in.

[0027]

[Effect of device]

  As described above in detail, the flow path switching device of the present invention has a bypass flow path that bypasses the bathtub. The circulating water temperature is low during the specified period or when the circulating water temperature is low. At the time of opening, the bypass flow path is opened to bypass the bath and circulate the circulating water. Cold water does not flow into the. As a result, the discomfort caused by reheating while bathing is reduced. It Moreover, it is provided by simply inserting it in the middle of piping or in the bus adapter. In that case, you only need to replace the bath adapter, which is extremely easy to use in an existing bath system. You can simply adapt.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a flow path switching device as a first embodiment.

FIG. 2 is an explanatory diagram showing an arrangement of a flow path switching device.

FIG. 3 is a timing chart showing the operation of the first embodiment.

FIG. 4 is a schematic configuration diagram of a flow path switching device as a second embodiment.

FIG. 5 is a timing chart showing the operation of the second embodiment.

FIG. 6 is a schematic configuration diagram of a bus adapter as a third embodiment.

FIG. 7 is a schematic configuration diagram of a bus adapter as a third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Forced circulation type reheating device, 2 ... Bathtub, 3 ... Water absorption piping, 4 ... Water supply piping, 10 ... Flow path switching device, 17 ... 3-way solenoid valve, 18 ... Bypass pipe, 19 ... Water flow switch, 20
... drive circuit, 30 ... flow path switching device, 31 ... temperature sensor,
32 ... Drive circuit, 40 ... Bus adapter, 43 ... Bypass pipe, 45 ... Thermostat type three-way valve

Claims (2)

[Scope of utility model registration request] 1. A flow path switching device for switching a circulating flow path of circulating water, which is provided in a water absorption pipe connecting a forced circulation type reheating device and a bathtub in the vicinity of the bathtub of a water supply pipe or in a bus adapter. That is, a bypass flow path that connects the water absorption pipe and the water supply pipe, and the circulating water that is sent from the forced circulation type reheating device through the water supply pipe to the bathtub side in the normal mode. And a detour mode for bypassing the bathtub via the bypass flow path and sending it to the water absorption pipe, and mode switching means for switching between these modes, and circulating water sent from the forced circulation type reheating device. And a mode setting means for setting the mode switching means to the bypass mode for a predetermined period after the water flow is detected. 2. A flow path switching device for switching the circulation flow path of the circulating water, which is provided in the water absorption pipe connecting the forced circulation type reheating device and the bathtub in the vicinity of the bathtub of the water supply pipe, or in the bus adapter. That is, a bypass flow path that connects the water absorption pipe and the water supply pipe, and the circulating water that is sent from the forced circulation type reheating device through the water supply pipe to the bathtub side in the normal mode. And a detour mode for bypassing the bathtub via the bypass flow path and sending it to the water absorption pipe, and mode switching means for switching between these modes, and circulating water sent from the forced circulation type reheating device. And a mode setting unit that sets the mode switching unit to the detour mode when the circulating water is at a low temperature.