JP2011152312A - Bathroom member cleaning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathroom member cleaning system, capable of avoiding inconvenience that unexpectedly high temperature cleaning water is supplied to a cleaning nozzle, and detecting supply of high temperature cleaning water when it occurs due to a connection mistake in installation work or the like to give a warning. <P>SOLUTION: In cleaning a bathtub, an openable/closable changing valve 36 on outgoing piping 62 of circulation piping 6 is changed to close, and a three-way changing valve 35 provided on return piping 61 is changed to be continuous with the side of cleaning piping 32. Hot water supplied from a hot water injection passage 53 to a return passage 46 is not fed toward a bathwater heat exchanger 41, but is fed toward the three-way changing valve 35 only. Even though, the return piping and the outgoing piping are misplaced in the middle due to a connection mistake in installation work, occurrence of a mis-connection state is detected by flow detection by a water flow switch 50 or high temperature detection by an outgoing temperature sensor 52, and safety measures are taken. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bathroom member cleaning system for cleaning bathroom members such as walls and flooring in a bathroom and a bathtub by jetting or spraying cleaning water from a cleaning nozzle, and in particular, unintended high-temperature cleaning water from the cleaning nozzle. This relates to a technique that can avoid the occurrence of jetting.

  2. Description of the Related Art Conventionally, a cleaning nozzle is installed in a bathtub, and the inside of the bathtub is cleaned by supplying cleaning water for cleaning from a water heater to the cleaning nozzle. Above all, in a fully automatic bath in which a hot water bath with a hot water heater combined with two cans and two water types is combined with a bathtub, and a bathtub are connected to each other via a circulation pipe, There is known a structure in which a cleaning pipe is branched and connected from the middle of a circulating pipe so that hot water from a water heater is supplied to the cleaning pipe via the circulation pipe (see, for example, Patent Document 1). And in this thing, drainage pipe is connected in the middle of circulation piping, drainage of bathtub water is possible by valve switching, and when bathing end switch is turned on, valve switching to drainage pipe and washing piping Thus, the water is supplied to the washing nozzle through the washing pipe and the inside of the bathtub is washed while draining the bathtub water.

  Also, hot water supply using a hot water heater configured to heat the can water supplied and stored in the can body for hot water supply to a predetermined temperature by directly heating the water with a combustion burner, and to supply the hot water as needed. In a hot water bath with a bath, a bath heat exchanger is provided in the hot water can and heated indirectly by the hot water for hot water as described above. There is also known a system in which a cleaning pipe is branched from the middle of the circulation pipe and hot water from a water heater is supplied to the cleaning pipe via the circulation pipe (see, for example, Patent Document 2).

JP-A-3-1040 JP-A-4-270858

  By the way, when supplying hot water from a water heater as cleaning water to the cleaning pipe through a part of the circulation piping for reheating as described above and supplying the cleaning nozzle, In this way, there is no inconvenience if it is a two-can, two-water type, but if a circulation pipe is connected to a one-bottle / two-water bath with a hot water heater, an unintended high-temperature hot water can be used as a washing water as a washing nozzle. There is a possibility that it will be supplied.

  That is, in the case of the two-can two-water system, the heat exchanger on the hot water supply side and the bath heat exchanger of the bath tub are heated independently in different can bodies, so that cleaning water is supplied. Therefore, even if the heat exchanger on the water heater side is heated, the bath heat exchanger is not heated. On the other hand, since it is the structure where the heat exchanger by the side of a water heater and the bath heat exchanger are arrange | positioned in the same can and heated by the same combustion burner in the case of 1 can 2 water type, If the heat exchanger on the water heater side is heated to supply the hot water, the bath heat exchanger will also be heated at the same time. For this reason, when supplying hot water heated by the heat exchanger on the water heater side to the cleaning nozzle via the recirculation piping, the cleaning water becomes unintentionally high due to unscheduled heating. It is possible that

  In recent years, in comparison with the two-can two-water type, there has been a tendency to adopt a single-bottle two-water bath with a hot water heater that is excellent in compactness and economy. When incorporating a cleaning system into a bath to which a hot water heater equipped bath is applied, it is required to develop a technology that can reliably avoid the inconvenience that the above-described unintended high-temperature cleaning water may be supplied. ing. Further, when washing is performed by jetting washing water into the bathroom as well as in the bathtub, it is necessary to surely avoid the possibility of the above inconvenience.

  Furthermore, the development of a technology that can structurally avoid the inconvenience that there is a risk that unintended high-temperature washing water may be supplied when a can with two water heaters is used. Even if it has been achieved, there is a possibility that inadvertently high temperature cleaning water will be supplied if an erroneous connection of piping occurs in the installation work of the system.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a bathroom that can reliably avoid the occurrence of inconvenience that unintended high-temperature washing water is supplied to the washing nozzle. The object is to provide a member cleaning system. Furthermore, even if it falls into a situation where high-temperature cleaning water is supplied due to an erroneous connection or the like in the installation work, a technology that can detect and warn of the occurrence of the erroneous connection state is provided. This is also the purpose.

  In order to achieve the above object, in the present invention, a bathtub and a hot water bath with a water heater are provided with a return pipe for returning the hot water in the bathtub to the hot water bath with a water heater, and the returned hot water from the bathtub with a water heater. After being passed through the bath heat exchanger in the bath tub, they are connected to each other via a circulation pipe composed of an outgoing pipe for supplying to the bathtub, and poured into the bathtub by pouring hot water into the circulation pipe from the hot water supply side. The hot water can be refilled and the hot water can be reheated by circulating the hot water in the bathtub between the bathtub and the bath heat exchanger through the circulation pipe by the operation of the circulation pump. The bathroom member cleaning system for cleaning the bathroom member including the bathtub by branching the hot water supplied to the circulation pipe from the hot water supply side of the bath with a vessel and spraying it from the cleaning nozzle is as follows. It was decided with a constant matter.

  That is, the cleaning pipe whose base end is branched from the circulation pipe and the tip is extended to the washing nozzle, and the hot water supplied to the circulation pipe from the hot water supply side of the bath with a water heater are bath heat. And a flow path switching means for switching the flow path of the circulation pipe to the cleaning communication state so as to flow into the cleaning pipe without passing through the exchanger. Then, connect the hot water supply path from the hot water supply side of the bath with the hot water heater to one of the return pipe and the return pipe of the circulation pipe, and connect the base end of the cleaning pipe to the one pipe. Branch connection. In addition, as the flow path switching means, the hot water supplied from the hot water supply side supplied to the one pipe is cut off and switched so as not to flow to the bath heat exchanger side from the connection point with the hot water supply path. The cleaning pipe is switched to the one pipe so as to flow into the cleaning pipe side from the branch connection point of the cleaning pipe (claim 1).

  In the case of this invention, when the flow path of the circulation pipe is switched to the cleaning communication state by the flow path switching means, even if hot water is supplied as cleaning water from the hot water supply path to the one pipe, the connection point with the hot water supply path Instead of flowing to the bath heat exchanger side, all of the supplied hot water flows into the cleaning pipe. For this reason, even if the above-mentioned hot water heater-equipped bath tub is configured in a one-can two-water system in which the bath heat exchanger is heated simultaneously with heating on the hot water supply side in order to supply hot water from the hot water supply channel. The hot water supplied from the hot water supply path to the one pipe flows into the cleaning pipe without being further heated by the bath heat exchanger. Accordingly, it is possible to reliably supply hot water having a predetermined temperature or less as hot water flowing into the cleaning pipe, and it is possible to reliably avoid the occurrence of an inconvenience that unintended high-temperature cleaning water is supplied to the cleaning nozzle. It will be.

  In the said invention, the base end of the said washing piping can also be connected so that it may branch from the circulation piping located in the bathtub side rather than the bathroom wall which comprises a bathroom (Claim 2). By doing so, the extension from the base end of the cleaning pipe to the tip connected to the cleaning nozzle is shortened, and the overall configuration of the bathroom member cleaning system can be made compact.

  In the present invention, as the flow path switching means, a three-way switching valve interposed at a branch connection position of the cleaning pipe with respect to the one of the return pipe and the forward pipe, the return pipe and the forward pipe An open / close switching valve interposed in the other pipe of the pipes can be configured (claim 3). By doing so, the base end of the cleaning pipe is connected to the three-way switching valve, and the three-way switching valve may be interposed at the branch position of the cleaning pipe with respect to the circulation pipe. And simplification of installation work.

  Further, in the above invention, the return pipe and the forward pipe constituting the circulation pipe are configured by connecting and connecting two or more pipe parts to each other. Despite being switched to a state, an erroneous connection that detects an erroneous connection state in which hot water that has passed through the bath heat exchanger is supplied to the cleaning pipe due to an erroneous connection of the piping part. Detection means can be provided (claim 4). In addition, an erroneous connection detection processing means for determining the occurrence of an erroneous connection state based on detection information from the erroneous connection detection means is provided, and the erroneous connection detection processing means is more than a connection point with the hot water supply path. It can be set as the structure which determines generation | occurrence | production of a misconnection state by the detection of the flow to the bath heat exchanger side, or temperature detection. In this way, the installation work is performed despite the fact that the configuration as described in the above-described invention can surely avoid the inconvenience that unintended high-temperature cleaning water is supplied to the cleaning nozzle. Even if there is a misconnection, etc., and there is a situation where high temperature cleaning water is supplied due to this misconnection, it is possible to detect and determine the occurrence of the misconnection, By performing a subsequent safety process and warning the user, it is possible to realize the fail-safe by avoiding the occurrence of the disadvantage that the unintended high-temperature washing water is supplied.

  As described above, according to the bathroom member cleaning system of the present invention, when the flow path of the circulation pipe is switched to the cleaning communication state by the flow path switching means, hot water is supplied as cleaning water from the hot water supply path to the one pipe. Even if supplied, it does not flow to the bath heat exchanger side from the connection point with the hot water supply path, and all of the supplied hot water can flow into the cleaning pipe. For this reason, even if the above-mentioned hot water heater-equipped bath tub is configured in a one-can two-water system in which the bath heat exchanger is heated simultaneously with heating on the hot water supply side in order to supply hot water from the hot water supply channel. The hot water supplied from the hot water supply path to the one pipe can be allowed to flow into the cleaning pipe without being further heated by the bath heat exchanger. As a result, hot water having a predetermined temperature or less can be reliably supplied as hot water flowing into the cleaning pipe, and it is possible to reliably avoid the occurrence of inconvenience that unintended high-temperature cleaning water is supplied to the cleaning nozzle. become able to.

  In particular, according to claim 2, in the bathroom member cleaning system, the extension from the base end of the cleaning pipe to the tip connected to the cleaning nozzle can be shortened, and the overall configuration of the bathroom member cleaning apparatus can be made compact. It becomes possible to plan.

  According to the third aspect of the present invention, in the bathroom member cleaning system, the three-way switching valve and the on-off switching valve are configured as the flow path switching means, so that the proximal end of the cleaning pipe is connected to the three-way switching valve. It is only necessary to interpose the circulation pipe at the branch position of the cleaning pipe, so that the overall configuration of the bathroom member cleaning apparatus can be made compact and the installation work can be simplified.

  According to the fourth aspect of the present invention, it is possible to reliably avoid the occurrence of inconvenience that unintentionally high-temperature cleaning water is supplied to the cleaning nozzle by providing the erroneous connection detection means for detecting the erroneous connection state of the circulation pipe. In spite of having a structure that can be used, even if an incorrect connection occurs during the installation work and the hot cleaning water is supplied due to the incorrect connection, the error may occur. The occurrence of a connection state can be detected. According to claim 5, by providing the erroneous connection detection processing means for determining the occurrence of the erroneous connection state based on the detection information from the erroneous connection detection means, the occurrence of the erroneous connection state is reliably detected.・ Fail-safety is realized by avoiding the above-mentioned inconvenience of unintended high-temperature washing water being supplied, by making it possible to make a judgment and alerting the user to the subsequent safe processing and the user. To be able to.

It is a mimetic diagram showing an embodiment of a bath system to which a bathroom member cleaning system of the present invention is applied. It is explanatory drawing which shows the connection required part of piping in the bath system of FIG. FIG. 2 is a view corresponding to FIG. 1, showing a state of a bathtub cleaning process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a bath system to which a bathroom member cleaning system according to an embodiment of the present invention is applied. In the figure, reference numeral 1a or 1b is a wall (specifically, 1a is a housing wall of a building including a bathroom, and 1b is a bathroom wall that partitions the bathroom), and a bathtub 2 is provided inside the bathroom wall 1b. On the other hand, a washing unit 3 such as a bathtub is provided, and a bath with a hot water heater (hereinafter simply referred to as “bath”) 4 is provided on the outside of the housing wall 1a or on the outside of the bathroom wall 1b. In addition, in FIG. 1 or FIG. 3, one illustration of the housing wall 1a and the bathroom wall 1b is abbreviate | omitted.

  A water bath with a water heater (hereinafter simply referred to as “bath kettle”) 4 is a combined heat source machine having a hot water supply function, a hot water filling function, and a reheating function. It is composed of. That is, the bath pot 4 is configured such that the bath heat exchanger 41 and the hot water supply heat exchanger 42 are arranged in one can and are heat-exchanged and heated by the combustion burner 43 which is a common heat source. It is a can 2 water type. In the following, the outline of the bath pot 4 will be described in detail, and then the configuration of the bathtub 2 side will be described in detail. The one-bottle two-water type hot water heater with a hot water heater referred to here is not only a case where both the hot water heater side and the hot water tank side are provided with heat exchangers, but two cans per one can body. When the water channel is installed and the water on the water heater side is heated, the water on the bath tub side is also heated at the same time. When using a bath tub with such a water heater, The present invention and the following embodiments are preferably applied.

  The bath 4 receives water supply such as tap water in the water supply passage 44 and causes the hot water supply heat exchanger 42 to discharge hot water heated to a predetermined temperature by heat exchange heating with the combustion heat of the combustion burner 43 to the hot water supply passage 45. This hot water is supplied to hot water taps (not shown) in various places such as a kitchen and a washroom through a hot water supply pipe (not shown). Further, the bath pot 4 includes a recirculation circuit 48 including a return path 46 and a forward path 47 for realizing a reheating function, and includes a return pipe 61 and a forward pipe 62 that are piped between the bath 2 and the bathtub 2. The bathtub hot water filled in the bathtub 2 is connected to the circulation pipe 6 and can be heated up to a predetermined temperature. The return pipe 61 and the outgoing pipe 62 are configured by connecting two or more pipe parts, and the return path 46 constitutes one of the piping parts of the return pipe 61, and the outgoing path 47. Constitutes one of the piping parts of the forward piping 62. Accordingly, the return pipe 61 and the return path 46 in the illustrated example constitute a “return pipe”, and the forward pipe 62 and the forward path 47 constitute a “forward pipe”.

  That is, the bath water returned to the bath 4 from the bathtub 2 through the return pipe 61 and the return path 46 by the operation of the circulation pump 49 is heat-exchanged and heated by the combustion heat of the combustion burner 43 while passing through the bath heat exchanger 41. It is circulated so that the hot water in the bathtub after reheating is supplied to the bathtub 2 through the outward passage 47 and the outward piping 62, and can be heated up to a predetermined boiling temperature. The circulation pump 49 is interposed in one of the return path 46 and the forward path 47 (return path 46 in this embodiment), and the return path 46 has a bath heat exchanger rather than the position where the circulation pump 49 is interposed. At the position on the 41 side, the flow on the return side is detected and the water flow switch 50 for outputting to the bath tub controller 7 described later, or the temperature of the bath water in the bathtub 2 returned to the bath heat exchanger 41 by the return path 46 is detected. A return temperature sensor 51 is interposed. Further, the outgoing path 47 is provided with an outgoing temperature sensor 52 that detects the temperature of the hot / cold water after passing through the bath heat exchanger 41. The water flow switch 50 and / or the outgoing temperature sensor 52 constitute a part of the erroneous connection detection means.

  Further, the bath pot 4 includes a pouring passage 53 as a hot water supply passage which branches off from the middle of the hot water supply passage 45 and is connected to the return passage 46 of the recirculation circulation passage 48. The hot water in the hot water supply path 45 is dropped into the return path 46 side and poured, so that hot water can be filled in the bathtub 2 through the recirculation circulation path 48 and the circulation pipe 6. In the pouring channel 53, the flow rate sensor 54, the pouring solenoid valve 55, the check valves 56 and 56 for preventing the back flow, and the back flow when negative pressure is generated on the upstream side, are arranged in order from the upstream side that is the hot water supply channel 45 side. An edge cut-off valve 57 for preventing the generation and a pressure-type water level sensor 58 for detecting the water level in the bathtub 2 are provided. The downstream end of the pouring channel 53 is connected to the return channel 46 via the circulation pump 49. When this circulation pump 49 is operated (ON), it is sucked from the suction port on the bathtub 2 side and discharged to the discharge port on the bath heat exchanger 41 side, but in the non-actuated state (OFF state) The side and the discharge port side are in communication with each other. A connection port communicating with the internal passage is formed integrally with the housing of the circulation pump 49, and the downstream end of the pouring passage 53 is connected to the circulation pump 49 using the connection port. Therefore, the connection point of the pouring channel 53 to the return channel 46 is the position where the circulation pump 49 is interposed. The flow rate adjustment of pouring or pouring water may be provided with a dedicated flow rate adjustment valve, or may be performed with a flow rate adjustment valve 45a interposed in the hot water supply passage 45 as shown in the figure.

  Each of the above hot water supply, reheating, and hot water filling operations is realized by operation control by the bath controller 7 based on setting information such as the set hot water temperature and hot water temperature set by the kitchen remote controller 71 or the like. ing. For example, in the hot water supply control, when the hot water tap is opened or the hot water solenoid valve 55 is opened and water is detected in excess of a predetermined operating flow rate, the combustion burner 43 is combusted to enter water from the water supply channel 44. The hot water at a predetermined temperature is discharged into the hot water supply passage 45. When the hot water filling control is started, the hot water solenoid valve 55 of the hot water pouring passage 53 is opened, and the combustion burner 43 is combusted to heat incoming water from the water supply passage 44, thereby hot water having a predetermined temperature. Is poured into the bathtub 2 through the hot water supply passage 45, the pouring passage 53, the recirculation circulation passage 48 and the circulation piping 6. At that time, in the case of the automatic bathing process, after the hot water filling, reheating control for raising the temperature to a predetermined boiling temperature and maintaining it is performed by operating the circulation pump 49 and the combustion burner 43, respectively. It has become.

  In the bathtub 2 installed in the bathroom, a circulation adapter 21 is installed in the vicinity of the lowermost end of the side wall, and a drain plug 22 of an automatic opening / closing drive control type and a cleaning nozzle 31 to be described later are installed on the bottom wall. An opening / closing drive mechanism 23 and a later-described detergent tank 34 are installed on the flange wall. The circulation adapter 21 is connected to the return pipe 61 and the forward pipe 62 of the circulation pipe 6, and the hot water in the bathtub 2 is sucked into the return pipe 61 through the circulation adapter 21. 2 is discharged. The drain plug 22 is opened and closed by receiving an opening / closing drive force from the opening / closing drive mechanism 23. The open / close drive mechanism 23 has an operation state (whether the drain plug 22 is open or closed). ) Is installed, and the opening / closing drive mechanism 23 is controlled based on the output signal from the sensor. When the drain plug 22 is opened, hot water in the bathtub 2 is discharged to the bottom of the bathroom, and subsequently drained from the drain outlet 24 of the bathroom.

  The bathtub cleaning unit 3 is installed to perform a cleaning process on an inner wall of the bathtub 2 or a bathroom member (hereinafter referred to as a “bathtub” or the like) such as a wall surface or floor surface constituting the bathroom. The washing unit 3 such as a bathtub includes a washing nozzle 31 installed on the bottom wall of the bathtub 2, a washing pipe 32 that supplies washing water to the washing nozzle 31, and a detergent mixture that mixes detergent in the washing pipe 32. The flow for switching the flow path by the circulation pipe 6 so that the cleaning water is supplied to the section 33, the detergent tank 34 storing the detergent to be supplied to the detergent mixing section 33, and the cleaning pipe 32. A three-way switching valve 35 and an opening / closing switching valve 36 as path switching means are provided. In addition, as the washing unit 3 for the bathtub or the like, the three-way switching valve 38 interposed in the washing pipe 32 at the downstream side of the detergent mixing portion 33 and the second washing in which the washing water is branched and supplied by the three-way switching valve 38. A pipe 32a and a second cleaning nozzle 39 connected to the tip of the second cleaning pipe 32a and installed in the bathroom wall or at an upper position of the bathroom are also provided, and by spraying cleaning water from the second cleaning nozzle 39, You may comprise so that a bathroom wall, a bathroom floor, etc. can be wash | cleaned.

  In such a washing unit 3 such as a bathtub, a pipe part constituting a part of the circulation pipe 6, a pipe part constituting a part of the washing pipe 32, a three-way switching valve 35, an opening / closing switching valve 36, etc. are previously unitized. In the installation of the bath system, it is inserted in the middle of the circulation pipe 6 in the bathroom. 1 or FIG. 2 illustrating the case of the system bus S, the circulation pipe 6 composed of the return pipe 61 and the forward pipe 62 is completed by connecting to each other through the connecting portions denoted by reference symbols J3 and J4. Is connected to the cleaning nozzle 31 and the detergent supply pipe 37 is connected to complete the installation work of the cleaning unit 3 such as a bathtub. Further, the connection portion indicated by the symbol J0 in the figure is a connection portion for connecting the circulation pipe 6 and the recirculation circuit 48 to each other in the housing of the bath tub 4, and the connection portion indicated by the symbol J1 is a building wall of the building. 1a is a connecting portion for penetrating through 1a, and a connecting portion indicated by reference symbol J2 is a connecting portion for passing through the bathroom wall 1b (in the example of FIG. 2, the wall of the system bath S), and the connecting portion indicated by reference symbol J5 is It is a connection part with respect to the circulation adapter 21, and each of these connection parts J0-J3 are connected in installation work, and a bath system is completed. If an erroneous connection occurs in the connection target at each of these connection portions J0 to J5, an unintended high-temperature hot water is supplied to the cleaning pipe 32 as cleaning water without forming a predetermined flow path in the circulation pipe 6. This also causes the same inconvenience as described in the conventional problem column. In the present embodiment, such erroneous connection is detected as will be described later, and safety processing is performed.

  The washing nozzle 31 is installed so as to penetrate the bottom wall of the bathtub 2 and jets washing water with a predetermined range from the front end opening (upper surface opening) toward the inner wall of the bathtub 2 and the outside of the bathtub 2. . Although only one cleaning nozzle 31 is illustrated in the drawing, two or more cleaning nozzles 31 can be installed in a predetermined arrangement according to the size of the bathtub 2 or the bathroom member to be cleaned. The upstream end (base end) of the cleaning pipe 32 is connected to the three-way switching valve 35 interposed in the return pipe 61 of the circulation pipe 6 and branches from the return pipe 61, and the downstream end (tip) is the above-mentioned The cleaning nozzle 31 is connected in communication. In other words, the three-way switching valve 35 is interposed not in the reheating circulation path 48 in the bath pot 4 but in the middle of the return pipe 61 of the circulation pipe 6 piped on the bathroom side (in the bathroom). A cleaning pipe 32 is branched from the pipe 61. For the cleaning pipe 32, the pouring electromagnetic valve 55 is opened and the three-way switching valve 35 and the opening / closing switching valve 36 are respectively controlled to switch the flow path, thereby switching from the hot water supply path 45 of the bath 4. Hot water or water having a predetermined temperature is supplied as washing water through the pouring channel 53, the return channel 46, and the return piping 61.

  That is, the three-way switching valve 35 and the open / close switching valve 36 are switched to each other between a circulation communication state and a cleaning communication state as follows. The return pipe 61 and the cleaning pipe 32 are cut off from each other, and the return pipe 61 on the bath 4 side and the circulation adapter 21 side (tub 2 side) is communicated with each other. On the other hand, the switching control is performed so that both sides of the forward piping 62 are communicated with each other while the opening / closing switching valve 36 is held while the opening / closing switching valve 36 is held open. On the other hand, the return pipe 61 and the cleaning pipe 32 communicate with each other and the return pipe 61 between the bath 4 side and the circulation adapter 21 side (tub 2 side) with the three-way switch valve 35 interposed therebetween. Is switched to the closed state, and the switching control is performed so that the flow passing through the open / close switching valve 36 is blocked, so that the washing communication state is established. That is, in this cleaning communication state, the hot water supplied from the pouring channel 53 to the return channel 46 flows only to the bathtub 2 side, flows into the cleaning pipe 32 through the three-way switching valve 35, and the bath heat exchanger 41 On the side, the valve is blocked by the open / close switching valve 36 and does not flow. As described above, when the bathtub cleaning process is executed, the open / close switching valve 36 is switched from the open state to the closed state, and the three-way switching valve 35 is returned to the cleaning pipe 32 side in synchronization with this. By controlling the switching of the flow path so as to switch to communicate with the hot water, all the hot water supplied from the hot water supply path 45 side through the pouring path 53 flows into the cleaning pipe 32 and is supplied to the cleaning nozzle 31. To get.

  Further, the detergent mixing section 33 is constituted by a venturi tube, and the detergent mixing section 33 is connected to the downstream end of the detergent supply pipe 37, and the upstream end of the detergent supply pipe 37 is connected to the detergent tank 34. On the other hand, a detergent opening / closing valve 37 a is interposed in the middle of the detergent supply pipe 37. A predetermined amount of detergent supplied from the detergent tank 34 by the opening operation of the detergent opening / closing valve 37a is mixed by the negative pressure suction action with the washing water passing toward the washing nozzle 31 in the detergent mixing section 33. It has become. The detergent supply amount for one cleaning can be adjusted according to the length of the valve opening time in which the detergent opening / closing valve 37a is opened. The detergent tank 34 is provided with a float switch for detecting the liquid level of the detergent, and detects that the liquid level has dropped to a predetermined liquid level and outputs it to the cleaning controller 8 described later.

  The operation elements 35, 36, 37a, and 38 of the washing unit 3 such as the bathtub and the operation elements 22 and 23 related to the washing of the bathtub 2 are controlled by the washing controller 8 as a washing control means. Yes. The cleaning controller 8 is connected to a cleaning remote controller 81 for cleaning operation, and the cleaning controller 8 is connected to the bath controller 7 so as to be capable of bidirectional communication. Then, when the user inputs the execution of the cleaning using the cleaning remote controller 81, the cleaning controller 8 performs a bath cleaning process for the bathtub or the like in cooperation with the bath tub controller 7. In addition to the kitchen remote controller 71, a bathroom remote controller 72 is connected to the bathtub controller 7, and the bathroom remote controller 72 can be used for input operations such as hot water filling and chasing.

  In addition to the bathtub cleaning processing unit that executes the bathtub cleaning process when the user inputs a cleaning command as described above, the cleaning controller 8 performs an erroneous connection detection process at the beginning of use when a bath system is installed. An erroneous connection detection processing unit is provided as an erroneous connection detection processing means.

  First, an example of the bathtub cleaning process by the bathtub cleaning processing unit will be described. The cleaning water in which the detergent is mixed in the detergent mixing unit 33 is jetted from the cleaning nozzle 31 to clean the inside of the bathtub, and the detergent is then added. A rinsing cleaning mode is performed in which cleaning water containing only clean water is jetted from the cleaning nozzle 31 without mixing. The bathtub cleaning process will be briefly described with reference to FIG. 3. First, the opening / closing drive mechanism 23 is opened to open the drain plug 22, and the drain plug 22 remains open for a set time (for example, 10 minutes). By waiting only, even if there is residual water in the bathtub 2, it waits until the residual water is drained and emptied. The value of the set time can be changed and set by a user input setting operation on the cleaning remote controller 81, for example.

  Next, the opening / closing switching valve 36 is closed and the three-way switching valve 35 is switched to the washing communication state. In addition, the detergent opening / closing valve 37a is opened and then the pouring solenoid valve 55 is opened via the bath controller 7. When the combustion burner 43 is operated to burn, the temperature of the water supplied from the water supply passage 44 is raised to the set temperature for washing while passing through the hot water supply heat exchanger 42, and the heated hot water is supplied to the hot water supply passage 45, pouring water. The cleaning pipe 32 is supplied through the path 53, the return path 46, the return pipe 61 and the three-way switching valve 35. When the supplied hot water passes through the detergent mixing section 33, the detergent supplied through the opened detergent opening / closing valve 37a and the detergent supply pipe 37 is mixed and mixed in the hot water supply by the negative pressure suction action. The cleaning water mixed with is ejected from the cleaning nozzle 31 into the bathtub 2 for cleaning. In FIG. 3, the path through which the hot water flows is indicated by a bold line.

  When the hot water is supplied to the cleaning pipe 32, the open / close switching valve 36 is closed, so that the hot water that has flowed from the pouring channel 53 into the return channel 46 flows to the bath heat exchanger 41 and the outgoing channel 47. Does not flow, but flows only to the cleaning pipe 32 via the three-way switching valve 35. Therefore, although the bath heat exchanger 41 is simultaneously heated by the combustion operation of the combustion burner 43 in order to heat the hot water supply heat exchanger 42, the hot water supplied from the pouring channel 53 to the return channel 46 is also performed. Can flow only to the three-way switching valve 35 side without flowing to the bath heat exchanger 41 side, so that the hot water having the above set temperature (from the above set temperature assured) as the hot water flowing into the cleaning pipe 32 can be ensured. Even hot water that does not reach the high temperature side) can be supplied.

  After the cleaning for a predetermined time or a predetermined flow rate is continued, the rinse opening / closing valve 37a is switched to close so that the rinse cleaning mode is executed with clean cleaning water not containing the detergent. After the rinsing cleaning in the rinsing mode is performed for a predetermined time or a predetermined flow rate, the hot water supply is stopped by closing the pouring electromagnetic valve 55, etc. 22 is closed and the process ends. In addition, since such a bathtub cleaning process is performed based on a user's input operation to the cleaning remote controller 81, the execution of the process is performed before or after the use of the bath, or even when the bath is used. Whether or not to execute the process is left to the user's selection. Alternatively, the combustion of the combustion burner 43 may be stopped in synchronism with the switching to the rinse cleaning mode, so that water is supplied instead of hot water as cleaning water for the rinse cleaning. Thereby, the temperature in the bathtub 2 or a bathroom can be reduced.

  Next, an example of erroneous connection detection processing by the erroneous connection detection processing unit will be described. The erroneous connection here refers to, for example, connecting the piping part of the return pipe 61 and the piping part of the outgoing pipe 62 between the inside of the bathroom wall 1b and the cleaning unit 3 such as a bathtub at the connection part J3 (see FIG. 3). Occurs when connected to the opposite connection (see symbol Jx in the figure). When such an erroneous connection occurs, on the bathtub side of the return pipe 61 following the return path 46, the open / close switching valve 36 is present at the position where the three-way switching valve 35 is originally disposed, while the return path 47 is connected to the return path 46. The three-way switching valve 35 exists at the position of the tub where the opening / closing switching valve 36 is originally provided on the bathtub side of the subsequent forward piping 62. For this reason, the hot water supplied from the pouring channel 53 to the return channel 46 in the bathtub cleaning process flows to the bath heat exchanger 41 side and passes through a part of the bath heat exchanger 41, the forward channel 47, and the forward piping 62. Thus, an erroneous connection point is reached, and the three-way switching valve 35 flows into the cleaning pipe 32. When this happens, hot water supplied from the pouring channel 53 is heated to a higher temperature in response to the combustion heat of the combustion burner 43 for heating the hot water supply heat exchanger 42 while passing through the bath heat exchanger 41. Therefore, unintended high-temperature hot water is supplied to the cleaning pipe 32 as cleaning water.

  An erroneous connection detection process for detecting the occurrence of such an erroneous connection is performed at the time of trial operation of the bathtub cleaning process after the installation of the bath system is completed, or at the first execution of the bathtub cleaning process after the power is turned on. Is supposed to be executed. That is, as described in the bathtub cleaning process described above, the open / close switching valve 36 is closed and the three-way switching valve 35 is switched to the cleaning communication state, and the combustion burner 43 is burned by opening the pouring electromagnetic valve 55. When the hot water heated by the hot water supply heat exchanger 42 is supplied to the return path 46 through the pouring channel 53, the output from the water flow switch 50 and / or the going-out temperature sensor 52 is monitored. If the flow to the heat exchanger 41 side is detected and / or the forward temperature sensor 52 detects a high temperature equal to or higher than a predetermined determination temperature (for example, 50 ° C.), it is determined that a misconnection has occurred, Otherwise, it is determined that the connection is normal.

  If it is determined that an erroneous connection has occurred, then, as a safety process, the combustion operation of the combustion burner 43 is forcibly stopped to stop the bathtub cleaning process. Output error indication. As an error indication, there is a possibility that a misconnection has occurred, there is a possibility that unintended high-temperature water may be jetted if washing the bathtub in this state, and it is necessary to contact the installer for repair work What is necessary is just to carry out so that one part or all of such things may be transmitted to a user. At the same time, a warning light may be turned on or blinking, or a warning sound may be sounded.

  As described above, even if the cleaning water is supplied to the cleaning nozzle via the circulation pipe of the can with two water heaters, unintended high-temperature cleaning water is supplied to the cleaning nozzle. Therefore, it is possible to reliably avoid the occurrence of inconvenience. In spite of this, even if an incorrect connection or the like occurs in the installation work and the high temperature cleaning water is supplied due to this incorrect connection, the erroneous connection is detected and safety processing ( Forcible operation stop) and the user can be warned, and the above-described inconvenience that unintended high-temperature washing water is supplied can be avoided to a higher degree and fail-safe can be realized. .

<Other embodiments>
In addition, this invention is not limited to the said embodiment, Various other embodiments are included. That is, the installation position of the cleaning nozzle 31 is not limited to the bottom wall of the bathtub 2 and may be, for example, a side wall.

  The arrangement positions of the three-way switching valve 35 and the opening / closing switching valve 36 constituting the flow path switching means may be reversed from those in the above embodiment. That is, in the above-described embodiment, the three-way switching valve 35 is interposed in the return pipe 61 and the cleaning pipe 32 is branched from the return pipe 61, while the forward pipe 62 is interposed in the opening / closing switching valve 36. Instead, the three-way switching valve may be provided or the cleaning pipe may be branched from the outgoing pipe 62, and the open / close switching valve may be provided in the return pipe 61. In this case, the downstream end of the pouring passage 53 may be connected to the outgoing passage 47 side, and the return temperature sensor 51 may be used in place of the outgoing temperature sensor 52 as an erroneous connection detection means. Also in this case, the hot water supplied from the pouring channel can be prevented from flowing toward the bath heat exchanger 41 and flow into the cleaning pipe, and the occurrence of an erroneous connection state can be detected.

  In the above embodiment, two open / close switching valves may be applied instead of the three-way switching valve. For example, instead of the three-way switching valve 35 as a flow path switching means, an open / close switching valve interposed on the proximal end side of the cleaning pipe 32 and a return pipe 61 closer to the circulation adapter 21 than the branch position of the cleaning pipe 32 You may make it employ | adopt the combination with the installed on-off switching valve as a flow-path switching means.

  In the above embodiment, the open / close switching valve 36 constituting the flow path switching means is connected to the other pipe (outbound pipe 62) different from the one pipe (return path 46) to which the pouring path (hot water supply path) 53 is connected. However, the present invention is not limited to this, and may be interposed on the side of the bath heat exchanger 41 that is opposite to the side of the three-way switching valve 35 across the connection point of the pouring channel 53. It may be the same as the pipe (return path 46) to which the pouring path 53 is connected.

1b Bathroom wall 2 Bathtub 4 Bathtub with water heater 6 Circulation piping 8 Cleaning controller (cleaning control means)
31 Cleaning nozzle 32 Cleaning pipe 35 Three-way switching valve (flow path switching means)
36 Open / close switching valve (channel switching means)
41 Bath heat exchanger 46 Return path (part of return piping)
47 Outbound (part of outbound piping)
48 Recirculation circuit (part of circulation piping)
50 Water flow switch
52 Outward temperature sensor (Incorrect connection detection means)
53 Pouring hot water path (hot water supply path)
61 Return piping (one piping)
62 Outward piping (other piping)

Claims (5)

After the bathtub and the hot water bath with a water heater have passed the return pipe for returning the hot water in the bathtub to the hot water bath with the water heater, and the returned hot water from the bathtub through the bath heat exchanger in the hot water bath with the water heater It is connected to each other through a circulation pipe composed of an outgoing pipe for supplying to the bathtub, and hot water can be filled in the bathtub by pouring from the hot water supply side to the circulation pipe. When the hot water in the bathtub is circulated between the bathtub and the bath heat exchanger through the circulation pipe by the operation, it can be reheated, and from the hot water supply side of the bath with the water heater to the circulation pipe A bathroom member cleaning system for cleaning the bathroom member including the bathtub by branching the supplied hot water and spraying it from the cleaning nozzle,
A washing pipe whose base end is connected to branch from the circulation pipe and whose tip extends to the washing nozzle, and hot water supplied to the circulation pipe from the hot water supply side of the bath with a hot water heater is a bath heat exchanger. Flow path switching means for switching the flow path of the circulation pipe to the cleaning communication state so as to flow into the cleaning pipe without passing through,
The hot water supply path from the hot water supply side of the bath with the hot water heater is connected to either the return pipe or the return pipe of the circulation pipe, and the base end of the cleaning pipe is branched to the one pipe. And
The flow path switching means performs switching switching so that hot water from the hot water supply side supplied to the one pipe does not flow to the bath heat exchanger side from a connection point with the hot water supply path, while the washing A bathroom member cleaning system, wherein the cleaning pipe is connected and switched to the one pipe so as to flow into the cleaning pipe from a branch connection point of the pipe. The bathroom member cleaning system according to claim 1,
The bathroom member washing | cleaning system connected so that the base end of the said washing piping may branch from the circulation piping located in the bathtub side rather than the bathroom wall which comprises a bathroom. The bathroom member cleaning system according to claim 1 or 2,
The flow path switching means includes a three-way switching valve interposed at a branch connection position of the cleaning pipe with respect to the one pipe of the return pipe and the forward pipe, and the other of the return pipe and the forward pipe. A bathroom member cleaning system comprising an open / close switching valve interposed in a pipe. The bathroom member cleaning system according to any one of claims 1 to 3,
Each of the return pipe and the forward pipe constituting the circulation pipe is configured by connecting two or more pipe portions in communication with each other.
Although the flow path by the circulation pipe is switched to the cleaning communication state by the flow path switching means, the hot and cold water that has passed through the bath heat exchanger is caused to the cleaning pipe due to the erroneous connection of the piping section. The bathroom member washing | cleaning system provided with the misconnection detection means which detects the misconnection state which will be supplied. The bathroom member cleaning system according to claim 4,
An erroneous connection detection processing means for determining occurrence of an erroneous connection state based on detection information from the erroneous connection detection means,
The erroneous connection detection processing means is configured to determine the occurrence of an erroneous connection state by detecting a flow from the connection point with the hot water supply path to the bath heat exchanger side or detecting a temperature. system.

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