JP2010099194A - Cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a cleaning device which permits the temperature of cleaning water so as to prevent hot water from being jet as the cleaning water even if a water heater without a temperature adjustment function for the cleaning water is used and can match with water heaters differing from manufacture to manufacturer. <P>SOLUTION: The cleaning device has a cleaning unit 3 mixing hot water supplied from the water heater 5 and a detergent together and supplying the mixture to a cleaning nozzle as the cleaning water and a control device 26 controlling the cleaning water supply action of the cleaning unit 3. The control device 26 adjusts the flow of the hot water to a specified value and reduces the flow of the hot water from the specified value by a fixed value and carries out a hot water discharging action to discharge the hot water for a prescribed period at the time when the temperature sensing means senses a first upper limit temperature or above, when detecting a prescribed error condition, in other words at the time when a cleaning action is initiated or when the temperature sensing means senses the first upper limit temperature or above at the time of a preceding cleaning action at the time when the cleaning action is initiated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cleaning device that performs warm water discharge operation when detecting a high temperature in a bathtub cleaning device that performs cleaning control by detecting the temperature of warm water.

  2. Description of the Related Art Conventionally, a bathtub cleaning device that drains hot water from a bathtub and then cleans the inner surface of the bathtub by spraying the hot water is known. In the bathtub cleaning device, if the temperature of the hot water sprayed for cleaning is too high, there is a problem that hot water is applied to the user in the vicinity of the bathtub and burns.

  Therefore, conventionally, means for detecting and controlling the temperature of hot water for cleaning with a temperature sensor has been provided. For example, a hot water automatic adjustment device that automatically adjusts the temperature of hot water is attached to a water heater that supplies hot water, and a hot water supply from a water heater is controlled to supply hot water to a bathtub cleaning device. .

  In addition, a bath cleaning device is known in which a hot water supply pipe is branched and a temperature sensor or the like is provided as a unit in a branch passage (see Patent Document 1).

  Moreover, in the bathtub washing apparatus provided with the temperature sensor, what produces the hot water of the designated temperature by mixing the water supplied from the water supply side pipe and the hot water supplied from the hot water side pipe is known ( Patent Document 2).

Japanese Utility Model Publication No. 5-39466 Japanese Utility Model Publication No. 4-68764

  In the conventional bathtub cleaning apparatus, there is a case where a temperature adjustment for bath cleaning is performed on the hot water supply side that supplies hot water, but there is a configuration that cannot adjust the temperature on the hot water supply side. When the temperature cannot be adjusted on the hot water supply side as in the latter case, it is necessary to control the hot water not to be sprayed from the cleaning nozzle while detecting the temperature of hot water and the amount of hot water in the bathtub cleaning device.

  This invention prevents high-temperature hot water that is likely to occur at the start of cleaning from being sent to the cleaning nozzle as a cleaning water and sprayed, and in particular, a hot water heater that does not have a temperature adjustment function for cleaning is used as a hot water supply source. Even so, an object of the present invention is to realize a bathtub cleaning apparatus that can be used even with a water heater that is not temperature-controlled so that high-temperature hot water is not jetted.

  In order to solve the above problems, the present invention mixes hot water supplied from a hot water supply source and detergent supplied from a detergent supply unit, and supplies it as cleaning water to a cleaning nozzle. A cleaning apparatus including a control unit that controls a cleaning operation, wherein the cleaning unit includes a temperature detection unit that detects the temperature of the hot water, and a flow rate adjustment unit that adjusts the flow rate of the hot water. As an operation, while adjusting the flow rate of hot water to a specified value, when a predetermined error condition is detected, the flow of hot water is decreased by a fixed value from the specified value and a hot water discharge operation is performed to discharge hot water for a predetermined time. A cleaning device is provided.

  The predetermined error condition is that the temperature detection means detects the first upper limit temperature or higher at the start of the cleaning operation, and the temperature detection means exceeds the first upper limit temperature during the previous cleaning operation at the start of the cleaning operation. However, when one of these two error conditions is detected, the hot water discharge is performed to discharge the hot water for a predetermined time by reducing the flow rate of the hot water by a constant value from the specified value. It is preferable that the operation is performed.

  Preferably, the control means is configured to return to the normal cleaning operation when the hot water discharge operation is completed and the temperature detection means detects a second upper limit temperature lower than the first upper limit temperature.

  The control means includes a first control mode corresponding to a case where the hot water supply source does not include the hot water temperature management means, and a second control mode corresponding to a case where the hot water supply source includes the hot water temperature management means. It is preferable that the first control mode and the second control mode can be switched.

  According to the cleaning device of the present invention, when the thermistor for detecting the hot water temperature is provided and the cleaning operation is started, it is detected that a predetermined error condition (the temperature detecting means is equal to or higher than the first upper limit temperature at the start of the cleaning operation). Or when the temperature detecting means has detected a temperature equal to or higher than the first upper limit temperature during the previous cleaning operation), the flow rate of the hot water is decreased by a fixed value from the specified value for performing the normal cleaning operation. Since the hot water is discharged, it is possible to prevent high-temperature hot water from being supplied in a normal cleaning operation amount and sprayed from the cleaning nozzle, thereby preventing the risk of burns and the like. In particular, even if high-temperature hot water remains in the pipe, it is possible to prevent an unexpectedly large amount of high-temperature wash water from being ejected from the washing nozzle.

  Further, in the cleaning apparatus according to the present invention, even if a hot water heater without a temperature management function for cleaning is used as a hot water supply source, by detecting the temperature of the hot water from the hot water supply source and performing a hot water discharge operation, It can be used as a hot water supply source, and the range of types and models of hot water heaters can be expanded, and even an existing hot water heater can be used as a hot water supply source.

  The best mode for carrying out the cleaning apparatus according to the present invention will be described below with reference to the drawings based on the embodiments.

(overall structure)
FIG. 1 is a block diagram illustrating an overall configuration for supplying cleaning water to a cleaning nozzle in Embodiment 1 of the bathtub cleaning apparatus of the present invention. As shown in FIG. 1, a bathtub cleaning apparatus of the present invention includes a cleaning nozzle 2 attached to a bathtub 1, a cleaning unit 3 that performs a hot water supply operation for cleaning the bathtub that supplies cleaning water to the cleaning nozzle 2, and the like. And a detergent tank 4 that is a detergent supply unit that supplies detergent to the cleaning unit 3, and a hot water heater 5 that is a hot water supply source that supplies hot water to the cleaning unit 3.

  The water heater 5 is a device that heats water and supplies it as hot water. Usually, a water heater that supplies hot water to the bathtub 1, the faucet 6, and the kitchen is used. The water heater 5 is supplied with tap water from the water pipe 7 and is also supplied with hot water from the bathtub 1 through the reheating pipe 8 and is heated to supply hot water to the bathtub 1 from the bathtub supply pipe 9. The The water heater 5 is controlled by operations of the cleaning remote controller 10, the bathroom remote controller 11, the kitchen remote controller 12, and the like.

  Hot water is supplied from the water heater 5 to the cleaning unit 3 and the faucet 6 through the hot water supply pipe 15. The cleaning nozzle 2 is a nozzle that injects cleaning water toward the inner surface of the bathtub 1, and is connected to the venturi 14 of the cleaning unit 3 via a cleaning water supply pipe 13. The cleaning unit 3 is provided with the following devices as a unit in a case.

  The washing unit 3 has a water passage portion 17, and a filter 18, a water amount servo valve 19 with a thermistor, a flow sensor 20, a pouring electromagnetic valve 21, a check valve 22, Two edge cut valves 23, 23, a check valve 24 and a venturi 14 are arranged. Furthermore, the cleaning unit 3 includes a detergent electromagnetic valve 25 that communicates with the venturi 14.

  The thermistor-equipped water quantity servo valve 19 includes a water quantity servo valve 36 and a thermistor 37. The water amount servo valve 36 adjusts the flow rate of the hot water in response to a flow rate adjustment signal from the control device 26 (the “control unit” of the present invention) as a flow rate adjustment unit. The thermistor 36 detects the hot water supply temperature of the hot water supplied from the hot water heater 5 as temperature detection means and transmits the data to the control device 26.

  Each device provided in the water passage unit 17 is connected to a signal input unit and a signal output unit of the control device 26 and controlled by the control device 26. Details of the control device 26 and the control device 26 that control the temperature and supply amount of the cleaning water, which is a feature of the invention, will be described later. Here, the overall configuration in which the control device 26 controls the cleaning device will be described.

  When a cleaning start signal from the control device 26 is sent to the pouring electromagnetic valve 21, the pouring electromagnetic valve 21 is opened, and hot water is sent from the water heater 5 through the hot water supply pipe 15 into the washing unit 3. The filter 18 of the cleaning unit 3 receives and filters the hot water discharged from the water heater 5, and the flow rate sensor 20 measures the instantaneous flow rate (flow rate / time) of the hot water and transmits a measurement signal to the control device 26. .

  The control device 26 transmits the measured value to the water amount servo valve 36, and the water amount servo valve 36 appropriately controls the degree of opening and closing of the valve according to the measured value, so that the flow rate is suitable for the cleaning nozzle 2 to inject. Control every moment. The two check valves 22 and 24 prevent the backflow of the wash water, and the edge cut valves 23 and 23 receive the wash water stopped by the check valves 22 and 24 from the water passage portion 17 when the negative pressure is generated. Drain through the drain pipe.

  The detergent tank 4 is a tank in which the detergent liquid is filled, and the state of filling of the detergent liquid is detected by the float switch 27. When the filling amount decreases, the detection signal is transmitted to the control device 26, and the control device 26 It is configured to generate a detergent out signal.

  The control device 26 is operated by the cleaning remote controller 10. In response to this operation, when the bathtub 1 is cleaned, the hot water electromagnetic valve 21 is opened for cleaning the bathtub 1, and hot water that is cleaning water is supplied to the cleaning nozzle 2. To supply a certain amount. Then, the control device 26 controls the detergent electromagnetic valve 25 to open while the pouring electromagnetic valve 21 is open, and supplies the detergent liquid to the venturi 14 through the detergent supply pipe 28. The detergent solution supplied to the venturi 14 is mixed into the warm water passing through the venturi 14. Accordingly, cleaning water containing detergent is prepared and supplied to the cleaning nozzle 2.

  The overall configuration of the cleaning device of the present invention is as described above. The characteristic configuration of the cleaning device of the present invention will be described below with reference to FIGS. The cleaning device of the present invention is configured to perform the cleaning operation shown in the flowcharts of FIGS. 2 and 3 under the control of the control device 26.

  Specifically, as illustrated in FIG. 4, the control device 26 includes a signal input unit 30, a CPU 31, a storage unit 32, a timer 33, a signal output unit 34, and the like, which are connected to each other via a data bus 35. A microcomputer is used.

  The signal input unit 30 is connected to the thermistor 37 (temperature detection means), the flow sensor 20, the float switch 27, the washing remote controller 10, the hot water heater 5 and the like via signal lines, and the signal output unit 34 includes a water volume servo valve 36, It is connected to the pouring solenoid valve 21, the detergent solenoid valve 25, the automatic drain plug 38, the washing remote controller 10, the hot water heater 5, and the like.

(Overall flow of cleaning operation)
The operations of the flowcharts shown in FIGS. 2 and 3 are performed by software that controls the cleaning operation mounted in the storage unit 32, respectively. A feature of the cleaning device of the present invention is a configuration for performing a flow rate limiting control operation (an operation for draining high-temperature water by reducing the flow rate when the hot water supply temperature is high: see FIG. 3). The overall flow of the preconditioning cleaning operation will be described with reference to the flowchart shown in FIG.

  When the operation switch (operation SW) is turned ON by the cleaning remote controller, and further the cleaning switch (cleaning SW) is turned ON, the cleaning device is started and the cleaning operation is started (see FIG. 2A). When the control device 26 detects a predetermined error condition at the start of the cleaning operation, an operation based on the flow rate restriction control (see FIG. 3A), which is a feature of the cleaning device of the present invention (flow rate restriction control operation). (See FIG. 2 (a) Yes, FIG. 3 (a)).

  Here, “when the control device 26 detects a predetermined error condition at the start of the cleaning operation” refers to a case where one of the following two error conditions is detected. One of the cases is when the thermistor 37 (temperature detection means) detects a hot water supply temperature of, for example, 50 ° C. (the “first upper limit temperature” of the present invention) or more at the start of the cleaning operation. The “predetermined error condition” in this case is “the temperature detecting means has detected a temperature equal to or higher than the first upper limit temperature”.

  The other is when the controller 26 detects that one of several errors during the cleaning operation has occurred during the previous cleaning operation at the start of the cleaning operation. In other words, this is a case where the previous error is detected at the start of the cleaning operation after the previous error detection and stop (start after error detection). The “predetermined error condition” in this case is “any of several errors occurred during the previous cleaning operation”.

  The details of the error during the cleaning operation (error during the previous cleaning operation) will be described later. For example, in FIG. 2 (the entire flowchart of the cleaning operation), as shown in (e) and (g), respectively. There are errors, and in FIG. 3 (flow chart of the flow restriction control operation), there are errors as shown in (c), (G) and (G), respectively.

  Note that “when a predetermined error condition is detected” is preferably a case where either one of the two predetermined error conditions is detected, but in any one of the two predetermined error conditions, A configuration that is set is also possible. In addition, the above two error conditions have been described, but other error conditions may be adopted as necessary in addition to the above two error conditions.

  If an error condition is not detected at the start of the cleaning operation (see No in FIG. 2 (a)), the process proceeds to a normal cleaning operation (see FIG. 2 (c)). In a normal cleaning operation, although depending on the size of the bathtub, in this embodiment, for example, warm water of about 6 liters / minute is supplied to the supply nozzle as cleaning water. In a normal cleaning operation, when the thermistor 37 detects a hot water supply temperature of 50 ° C. or higher for 5 seconds or longer, the cleaning operation is stopped and an error is displayed on the cleaning remote controller (see FIGS. 2 (e) Yes, (e)). ).

  Further, in the normal cleaning operation, when the thermistor 37 does not detect the hot water supply temperature of 50 ° C. or higher for 5 seconds or longer, the normal cleaning operation is continued (see FIG. 2 (D) No), but the thermistor 37 is 60 ° C. or higher. When the temperature is detected for 1 second or longer (see Yes in FIG. 2), the cleaning operation is stopped and displayed as an error on the cleaning remote controller (FIG. 2 (K)).

  These error indications (FIGS. 3 (O) and (G)) are canceled when the operation SW is turned OFF (the error indication disappears). Also, after these error indications, when the operation SW is turned on and the washing SW is turned on, the washing operation starts as described above, and the previous error displayed above is detected as an error condition at the start. Then, the flow (flow restriction control operation) by the flow restriction control (FIG. 3 (a)) as shown in FIG. 3 is proceeded (see FIG. 2 (a) Yes, FIG. 3 (a)).

(Flow of flow restriction control operation)
Next, the flow rate restriction control operation will be described with reference to FIG. When the flow rate restriction control (FIG. 3A) is started, the control device 26 controls to throttle the water amount servo valve 36, and the supply flow rate of the washing water is changed from, for example, a normal 6 liter / minute to 2 liter / minute. To. By restricting the supply flow rate in this way, the momentum of jetting of the washing water from the nozzle is suppressed, and the hot water remaining in the pipe is drained little by little to prevent the risk of burns caused by the jet of hot washing water. It is something to try.

  In the case where 5 minutes have not elapsed since the start of the flow rate restriction control operation (see No in FIG. 3 (b)), if “flow rate of cleaning water> 0” has not elapsed for 60 seconds, the hot water heater 5 (hot water supply) When there is no hot water supply exceeding 60 seconds from the (source) (see No in FIG. 3 (c)), the process proceeds to forced purge (corresponding to an example of the hot water discharge operation of the present invention) (see FIG. 3 (d)).

  In this forced purge, a signal is sent from the control device 26 to the cleaning unit 3 to forcibly start supplying hot water for cleaning water. However, the hot water supply of the cleaning water here is performed in a state where the supply flow rate is reduced to approximately 2 liters / minute by the water amount servo valve 36 as described above.

  In the forced purge, as described above, the water amount servo valve 36 is controlled by the control device 26 so as to restrict the supply flow rate of the cleaning water to approximately 2 liters / minute. In the case where high-temperature hot water remains in the cleaning water supply pipe 13 up to 2, cleaning water exceeding 2 liters / minute is supplied to the cleaning nozzle 2 and is jetted as high-temperature cleaning water. Danger arises.

  In order to prevent such a situation, the flow rate sensor 20 detects that the supply flow rate of the cleaning water has exceeded, for example, 4 liters / minute (see Yes in FIG. 3 (o)) and 47 ° C. (second When the hot water supply temperature is detected (see (No. 3 in FIG. 3) No.), and when it is detected after 20 seconds have passed (see Yes in FIG. 3 (ki)), The cleaning operation is stopped and an error is displayed on the cleaning remote controller (FIG. 3 (K)).

  In addition, in the detection of the flow rate, if it does not exceed 4 liters / minute (see No in FIG. 3), the flow returns to the start of the flow rate restriction control operation (FIG. 3A). The operation for returning to the start of the flow rate restriction control in this way is shown as “R” in FIG. Further, in FIG. 3 (F), when a temperature lower than 47 ° C. (second upper limit temperature) is detected (see FIG. 3 (F) Yes), as shown in R, the start of the flow rate restriction control ( Returning to FIG. Further, in FIG. 3 (K), when the detection of the hot water supply temperature has not continued for 20 seconds (see No in FIG. 3 (K)), as shown by R, the flow rate restriction control starts (FIG. 3 (A) Return to)).

  When 5 minutes have not elapsed since the start of the flow restriction control (see No in FIG. 3 (a)), if the flow rate of cleaning water> 0 has passed 60 seconds, in short, 60 seconds from the water heater 5 If there is more hot water supply (see Yes in FIG. 3 (C)), the operation proceeds to the operation after the forced purge is completed (see FIG. 3 (K)).

  In the operation after the forced purge is completed, when a temperature lower than 47 ° C. is detected (see FIG. 3 (ko) Yes), and when it is detected after 5 seconds have elapsed (FIG. 3 (s)) In the case of “Yes”, normal control (FIG. 3 (b)) is entered, and the process proceeds to a normal cleaning operation (FIG. 2 (c)). Then, the supply amount of the cleaning water that has been throttled by the water amount servo valve 36 is also 6 liters / minute, and a normal cleaning operation is performed.

  When the temperature below 47 ° C. is detected (see No. in FIG. 3), but when it is not detected after 5 seconds (see No. in FIG. 3), as indicated by R Returning to the start of the flow restriction control (FIG. 3A).

  This is a case where a hot water supply temperature of 47 ° C. or higher is detected in the operation after the end of the forced purge (see No. in FIG. 3 (ko)), and the flow rate sensor 20 supplies a cleaning water supply flow rate of, for example, 4 liters / minute. If it is detected that it has exceeded (see (3) Yes in FIG. 3), if it is detected after 20 seconds have elapsed (see Yes in FIG. 3), the cleaning operation stops and an error is detected in the cleaning remote controller. The display is made (FIG. 3 (G)).

  In addition, in the detection of the flow rate in FIG. 3 (S), when the flow rate does not exceed 4 liters / minute (see No in FIG. 3 (S)), as shown by R, the start of the flow rate restriction control (FIG. 3 (A)). Return to). Further, even when 20 seconds have not elapsed in FIG. 3 (C), as indicated by R, the flow returns to the start of the flow rate restriction control (FIG. 3 (A)).

  When 5 minutes have elapsed since the start of the flow restriction control (see FIG. 3 (a) Yes), the cleaning operation is stopped and an error is displayed on the cleaning remote controller (FIG. 3 (t)). In short, in the flow rate limiting control operation (see FIG. 3) that is performed when an error condition is detected at the start of the cleaning operation (see FIG. 3), within 5 minutes, (a) → (c) → (co) → ( If it does not proceed to normal operation as shown in (S) → (S), an error will occur.

  The feature of the above flow restriction control operation is that when an error occurs when a temperature of 50 ° C. or higher (the “first upper limit temperature” of the present invention) is detected, the error is detected when the cleaning operation starts. Then, proceed to the flow restriction control operation, and for 5 minutes after starting the flow restriction control, use a servo valve to restrict the flow rate of the washing water to 2 liters / minute and supply hot water little by little to remove the remaining hot water in the hot water pipe. When the hot water temperature below 47 ° C. (the “second upper limit temperature” in the present invention) is detected for 5 seconds continuously after 60 seconds have passed since draining and starting the flow restriction control, That is, the normal control state is entered, and the normal cleaning operation is performed. As a result, it is possible to prevent the risk of burns and the like due to the injection of hot cleaning water at the start of the cleaning operation.

  A second embodiment of the present invention will be described with reference to FIG. The cleaning apparatus of the second embodiment has substantially the same configuration as that of the first embodiment, but further includes a hot water temperature control mode switching unit that automatically switches between two types of hot water temperature control modes in addition to the configuration of the first embodiment. It is characterized by the structure. Here, the two types of hot water temperature control modes are “first hot water temperature control mode” (“first control mode” of the present invention) and “second hot water temperature control mode” (present) described below. "Second control mode" of the invention).

  The first hot water temperature control mode is a mode in which the cleaning operation of FIGS. 2 and 3 as described in the first embodiment is performed in a configuration in which the water heater itself does not include the hot water temperature management means. On the other hand, the second hot water temperature control mode is a mode in which the water heater itself is provided with hot water temperature management means, and the temperature of the cleaning water is managed in the hot water temperature management means of the water heater itself.

  Here, the hot water temperature management means of the water heater itself is temperature controlled so as not to supply hot water having a high risk of scalding as cleaning water to the cleaning nozzle 2 when performing automatic washing operation of the bathtub. Means. The hot water temperature management means of such a water heater itself is different depending on the hot water heater of each model of each manufacturer. The specific contents of the hot water temperature management means and the second hot water temperature control mode by the hot water temperature management means are described here. I do not explain.

  In the cleaning device of the second embodiment, the hot water heater 5 and the control device 26 are connected by a signal line, and in addition to the function of the control device 26 described in the first embodiment, the hot water heater 5 includes control means for preventing burns. Determination switching means is provided for determining whether the configuration is the same, and switching between the first hot water temperature control mode and the second hot water temperature control mode in accordance with the determination. Such discrimination switching means will be described with reference to FIG.

  This switching means actually operates as shown in the flowchart of FIG. 5 by software installed in the storage unit 32 of the control device 26. The control device 26 is normally preset (default) so as to perform the cleaning operation in the first hot water temperature control mode. In short, the default condition is the first hot water temperature control mode.

  When newly installing or replacing the bathtub with a cleaning device, the control device 26 and the water heater 5 are connected by a signal line, and the power source of the entire equipment such as the bathtub with the cleaning device and the water heater is distinguished from the switch SW of the cleaning device. This is called “installed power”. When there is no signal from the water heater 5 at the time of the charging (FIG. 5A) (see No in FIG. 5A), the first hot water temperature control mode set as a default condition is switched in advance. There is nothing (5 (c)). Therefore, when the cleaning remote controller 10 is operated to start the cleaning operation, the cleaning operation is performed according to the first hot water temperature control mode as described in the first embodiment.

  However, when a signal is input from the water heater 5 when the installation power is turned on (FIG. 5A) (see Yes in FIG. 5A), the first hot water temperature control mode, which is the default condition, is used. The mode is switched to the second hot water temperature control mode (FIG. 5D).

  If the installation power is not turned off and reset (see No in FIG. 5), after that, when the cleaning operation is started by operating the cleaning remote controller, the water heater 5 is operated according to the second hot water temperature control mode. Cleaning operation is performed by the hot water temperature management means.

  In the state switched to the second hot water temperature control mode, when the installation power source is turned off and reset (see Yes in FIG. 5), the first condition which is the default condition from the second hot water temperature control mode is set. Switch to hot water temperature control mode.

  Since the control device of the second embodiment has the above-described configuration, the first hot water temperature control mode and the second hot water are automatically set according to the model in which the water heater is not equipped with the hot water temperature management means and the equipped model. It is possible to switch to the temperature control mode, and it is possible to exhibit each burn prevention control function according to the type of water heater.

  The best mode for carrying out the cleaning apparatus according to the present invention has been described based on the embodiments. However, the present invention is not limited to such embodiments, and is described in the claims. It goes without saying that there are various embodiments within the scope of technical matters.

  Since the configuration of the cleaning apparatus according to the present invention is as described above, it is particularly useful for a cleaning apparatus that uses a water heater that does not include burn prevention control means.

In Example 1 of the washing | cleaning apparatus of this invention, it is a block diagram explaining the whole structure which supplies washing water to a washing nozzle. It is a flowchart of the whole washing | cleaning operation | movement by the control apparatus of the washing | cleaning apparatus of Example 1 of this invention. It is a flowchart of the whole flow volume restriction | limiting control operation for burn prevention in the washing | cleaning operation | movement by the control apparatus of the washing | cleaning apparatus of Example 1 of this invention. It is a block diagram of the control apparatus of Example 1 of this invention. It is a flowchart of operation | movement of the discrimination | determination switching means of the warm water temperature control mode of Example 2 of this invention.

Explanation of symbols

1 Bathtub
2 Cleaning nozzle
3 Cleaning unit
4 Detergent tank (detergent supply section)
5 Water heater (hot water supply source)
6 faucets
7 Water pipe
8 Piping for chasing
9 Supply pipe for bathtub
10 Cleaning remote control
11 Bathroom remote control
12 Kitchen remote control
13 Washing water supply pipe
14 Venturi
15 Hot water supply pipe
17 Water passage of cleaning unit
18 Filter
19 Water servo valve with thermistor
20 Flow sensor
21 Pouring solenoid valve
22, 24 Check valve
23 Edge cut valve 25 Detergent solenoid valve
26 Control device
27 Float switch
28 Detergent supply pipe 30 Signal input unit 31 CPU
32 storage unit 33 timer 34 signal output unit 35 data bus 36 water volume servo valve (flow rate adjusting means)
37 Thermistor (temperature detection means)

Claims (5)

  A cleaning unit that supplies hot water supplied from the hot water supply source and detergent supplied from the detergent supply unit as cleaning water to the cleaning nozzle, and a control unit that controls the cleaning operation of the cleaning unit are provided. It is a cleaning device, and the cleaning unit has temperature detection means for detecting the temperature of hot water and flow rate adjustment means for adjusting the flow rate of hot water, and the control means adjusts the flow rate of hot water to a specified value as a normal cleaning operation. On the other hand, when a predetermined error condition is detected, the cleaning apparatus is characterized by performing a warm water discharge operation for discharging the warm water for a predetermined time by reducing the flow rate of the warm water by a constant value from a specified value.   2. The cleaning apparatus according to claim 1, wherein the predetermined error condition is that the temperature detecting means detects a temperature equal to or higher than a first upper limit temperature at the start of the cleaning operation.   2. The cleaning apparatus according to claim 1, wherein the predetermined error condition is that the temperature detecting means detects the first upper limit temperature or more at the time of the previous cleaning operation at the start of the cleaning operation. Cleaning device.   4. The cleaning apparatus according to claim 2, wherein when the control unit finishes the hot water discharge operation and the temperature detection unit detects a second upper limit temperature lower than the first upper limit temperature, the control unit performs normal cleaning operation. A cleaning device characterized by returning.   5. The cleaning apparatus according to claim 1, wherein the control means has a first control mode corresponding to a case where the hot water supply source does not include the hot water temperature management means, and the hot water supply source is the hot water temperature. A cleaning apparatus comprising: a second control mode corresponding to a case where a management unit is provided, and capable of switching between the first control mode and the second control mode.

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