JP6299082B2 - Human body local cleaning equipment - Google Patents

Description

  The present invention relates to a human body local cleaning device including a heat exchange unit that heats cleaning water.

  A human body local cleaning apparatus including such a heat exchange unit is described in Patent Document 1 below. The device described in Patent Document 1 includes a flow sensor. When the flow rate of the cleaning water cannot be detected by the flow rate sensor, it is determined that the flow of cleaning water has stopped for some reason, and the heater is stopped to prevent emptying.

JP 2004-100253 A

  When the flow rate sensor is configured as described above, a large installation space is required because an impeller that rotates by the flow of cleaning water is used. Also, the flow sensor is expensive.

  It is an object of the present invention to provide a human body local cleaning device that can detect airing without using a flow sensor.

In order to solve the above-mentioned problems, a human body local cleaning device according to the present invention includes a fluid space in which cleaning water circulates, a main body portion in which a stirring area for stirring cleaning water heated in the fluid space is formed, and the fluid A heat exchange unit having a heater disposed in the space, and located in the fluid space and in the relay channel between the fluid space and the stirring region, in the relay channel A temperature sensor that is provided so as to narrow a region through which the washing water can pass and that contacts the heater, and a control unit that stops the output of the heater when the temperature detected by the temperature sensor exceeds a predetermined threshold value And.

It is preferable that the washing water that has come out of the fluid space pass through a gap between the outer surface of the temperature sensor and the inner surface of the relay flow path and enter the stirring region .

  The stirring area may be a meandering flow path.

  In the human body local cleaning device according to the present invention, a temperature sensor is provided in the fluid space or in the relay flow path between the fluid space and the stirring region. can do. That is, it is not necessary to use a flow sensor for detecting an empty state. The temperature sensor can also be used to detect the temperature of the washing water in the fluid space or immediately after exiting the fluid space (before stirring in the stirring region).

  If the region through which the wash water can pass is narrowed by the temperature sensor inserted in the relay flow path, the stir action for the heated wash water that has flowed out of the fluid space is not connected to the relay flow before reaching the stir zone. It becomes the structure which is also demonstrated on the road. That is, the temperature sensor functions not only as the above-mentioned airing prevention element but also as an agitation promoting element (an element for assisting agitation in the agitation region).

  If the stirring region is a meandering flow path, the stirring effect is high. Therefore, if a temperature sensor (another temperature sensor) is provided in the flow path after passing through the stirring region, the detection accuracy of the outlet temperature of the heat exchange unit is improved.

It is a block diagram for demonstrating the outline of the human body local cleaning apparatus concerning one Embodiment of this invention. It is an external view of the washing water heating apparatus with which the human body part washing | cleaning apparatus concerning 1st embodiment of this invention is provided. It is the figure which showed the state which removed the stirring area | region cover of the washing water heating apparatus shown in FIG. It is sectional drawing (AA sectional view taken on the line of FIG. 2) of the washing water heating apparatus shown in FIG. It is sectional drawing of the washing water heating apparatus with which the human body local cleaning apparatus concerning 2nd embodiment of this invention is provided. It is the figure which showed typically the various aspects of the stirring area | region.

  A human body part cleaning apparatus 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown schematically in FIG. 1, a human body local cleaning device 1 according to the first embodiment includes a cleaning water heating device 2 that heats water supplied from a water source through a main valve to a predetermined temperature, and cleaning water. And a cleaning nozzle 4 for ejecting water supplied from the heating device 2. In the washing water heating apparatus 2, a heat exchange unit 10 and an abnormal heating detection sensor 20 (corresponding to a temperature sensor in the present invention) are provided.

  The heat exchange unit 10 provided in the washing water heating apparatus 2 is a unit for heating water sent from a water source to a predetermined temperature. Water heated to a predetermined temperature is sent to the washing nozzle 4. The cleaning nozzle 4 is provided so as to be able to move back and forth between the original position and the cleaning position advanced by the nozzle driving device 5 controlled by the control means 30, and the cleaning water is ejected toward the local part of the human body at the cleaning position. To do. Since the configuration of the cleaning nozzle 4 and the nozzle driving device 5 can be a known configuration, detailed description thereof is omitted.

  The heat exchange unit 10 whose details are shown in FIGS. 2 to 4 includes a main body 11 and a heater 12. The main body 11 is provided with a fluid space 111 through which water sent from a water source passes, a relay channel 112, and a stirring region 113. The fluid space 111 is a substantially cylindrical space. A cylindrical heater 12 is disposed in the fluid space 111. The heater 12 is controlled by the control means 30. A flange portion 121 is provided at one end (water source side) end portion of the heater 12, and the flange portion 121 contacts one opening end surface of the fluid space 111. A cylindrical connecting portion 122 is provided on the opposite side of the flange portion 121 to the side where the heater 12 is connected. The connecting portion 122 and the flange portion 121 form a flow path that continues to the inside of the heater 12. A relay pipe 123 is inserted inside the connection part 122. A water supply hose (not shown) is directly or indirectly connected to the relay pipe 123. The washing water sent from the water source flows into the heater 12 from the water supply hose through the flow path formed by the relay pipe 123, the connection part 122, and the flange part 121.

  The opening at the other end of the fluid space 111 is sealed with a cap member 114. A gap of a predetermined size exists between the other end face of the heater 12 and the tip face of the cap member 114. Further, the inner peripheral surface of the main body 11 (a cylindrical surface facing the fluid space 111) is formed larger than the outer diameter of the heater 12, and the central axes thereof are substantially coincident. Therefore, a gap of a predetermined size exists also between the outer peripheral surface of the heater 12 and the inner peripheral surface of the main body 11. An opening serving as the outlet 1111 of the fluid space 111 is formed at one end of the inner peripheral surface of the main body 11. The cleaning water that has flowed into the heater 12 passes through the gap between the other end surface and the tip end surface of the cap member 114 and makes a U-turn so that the outer peripheral surface of the heater 12 and the inner peripheral surface of the main body 11 And flows out from the outlet 1111 of the fluid space 111. The washing water is thus heated while passing through the inside and outside of the heater 12.

  A relay channel 112 is connected to the outlet 1111 of the fluid space 111. The relay flow path 112 is a flow path that connects the fluid space 111 and the stirring area 113. The relay flow path 112 in the present embodiment is a flow path that extends in a direction orthogonal to the central axis of the heater 12. The stirring region 113 is a configuration for making the temperature uniform by stirring the cleaning water heated by the heater 12 and improving the detection accuracy of the temperature of the cleaning water sent to the cleaning nozzle 4. That is, an outlet temperature sensor 40 (in the present embodiment, two outlet temperature sensors 40 are provided) is provided in the flow path through which the washing water that has passed through the stirring region 113 passes. The outlet water temperature sensor 40 detects the temperature of the washing water after being stirred. The control means 30 capable of obtaining the temperature detected by the outlet temperature sensor 40 compares the temperature detected by the outlet temperature sensor 40 with the set temperature, and controls the output of the heater 12. The washing water that has passed through the stirring region 113 flows out from the outlet of the heat exchange unit 10 and is sent to the washing nozzle 4. The stirring region 113 in this embodiment is a meandering flow path. In other words, the cleaning water circulates in a meandering manner so that a stirring action is provided to the cleaning water. One outlet temperature sensor 40 controls the temperature of the washing water based on the detected temperature, and the other outlet temperature sensor 40 turns off the heater 12 when a temperature equal to or higher than a predetermined value is detected. It is a temperature sensor for a safety device to be stopped.

  The abnormal heating detection sensor 20 is a temperature sensor that can detect the temperature of the cleaning water, and is fixed to a sensor mounting portion 115 provided outside the relay flow path 112. The sensor attachment portion 115 is formed in a cylindrical shape, and an opening connected to the relay flow path 112 is formed at the tip thereof. The sensor mounting portion 115 is formed integrally with a stirring region cover 116 that closes a meandering flow path that is the stirring region 113 from above. The central axis of the relay flow path 112 and the sensor attachment portion 115 are the same. The temperature sensor inserted into the sensor attachment portion 115 enters the relay flow path 112 and the fluid space 111 through the opening. Specifically, the temperature detection unit 21 in the temperature sensor is configured to be located in at least one of the relay flow path 112 and the fluid space 111. An O-ring is fitted between the flange portion 22 formed on the abnormal heating detection sensor 20 and the bottom surface of the sensor mounting portion 115 to prevent water leakage through the opening.

  The abnormal heating detection sensor 20 has a temperature detection portion 21 at the tip thereof that is thinner than the base end. In the present embodiment, the temperature detection unit 21 is located across the fluid space 111 and the relay flow path 112. The temperature of the relay channel 112 is narrowed by the temperature detection unit 21 (region through which water can pass). Specifically, the wash water passes from the fluid space 111 through a gap between the outer surface of the temperature sensor and the inner surface of the relay flow path 112 and enters the stirring region 113.

  The control means 30 can obtain the temperature detected by the abnormal heating detection sensor 20. Further, the output of the heater 12 can be controlled. When the supply of water to the fluid space 111 is stopped for some reason and the water is in an empty state, the temperature of the heated high-temperature steam is detected by the abnormal heating detection sensor 20, and therefore the control means 30 When the cleaning water temperature is heated by the heater 12, when the detected temperature of the abnormal heating detection sensor 20 is equal to or higher than a predetermined threshold, it is determined that the heater 12 is in an empty state, and the output of the heater 12 is Stop. Since the abnormal heating detection sensor 20 is not in contact with the heater 12, the temperature of the heater 12 is not directly detected. For this reason, the temperature is detected via steam in the case of an empty state, and the influence of the heat of the heater 12 being transmitted to the abnormal heating detection sensor 20 due to heat transfer by air or the like. Is small. Further, the control means 30 determines that the heater 12 is in an empty state and stops the output of the heater 12 when the detected temperature of the abnormal heating detection temperature sensor 20 does not rise even though the heater 12 is heated. Control may be added.

  According to the human body local cleaning apparatus 1 according to the present embodiment having such a configuration, the following effects are exhibited.

  In the human body local cleaning device 1 according to the present embodiment, when the temperature detected by the abnormal heating detection sensor 20 exceeds a predetermined threshold value, the output of the heater 12 is stopped, and the empty heating state continues. To prevent. That is, since it is not determined whether or not it is in an empty state on the basis of whether or not cleaning water is continuously supplied into the fluid space 111, the flow sensor for detecting emptying provided in the conventional apparatus is unnecessary. Become. The abnormal heating detection sensor 20 is provided in the fluid space 111 and the relay flow path 112. That is, since it is provided in front of the agitation region 113, there is no risk of overlooking the air-fed state, and a quick response until the output of the heater 12 is stopped when the air-fed state occurs. . In addition, although it has been described that the abnormal heating detection sensor 20 in the present embodiment is provided so as to straddle both the fluid space 111 and the relay flow path 112, it is configured only in the relay flow path 112. There may be. However, the detection accuracy of the empty state is higher when a part of the abnormal heating detection sensor 20 is located in the fluid space 111. Also, the response is fast. The abnormal heating detection temperature sensor 20 may be provided so that the temperature detection unit 21 on the front end side can be brought into contact with the heater 12 to directly detect the temperature of the heater 12.

  The abnormal heating detection sensor 20 narrows the flow path of the relay flow path 112. Therefore, the wash water enters the agitation region 113 from the fluid space 111 via a narrow flow path. This change in the flow path provides a stirring effect on the washing water heated by the heater 12. In other words, the stirring action on the cleaning water is also exhibited in the relay flow path 112 before reaching the stirring area 113. As described above, the abnormal heating detection sensor 20 functions not only as an element for preventing emptying but also as an element for promoting the agitation of the cleaning water (an element for assisting the agitation in the agitation region 113).

  A human body local cleaning device 1a according to a second embodiment of the present invention will be described. In addition, description is abbreviate | omitted about the structure similar to the human body local cleaning apparatus 1 concerning said 1st embodiment. A human body local cleaning device 1a according to the second embodiment includes a cleaning water heating device 2a shown in FIG. 5, and in this cleaning water heating device 2a, a part of the abnormal heating detection sensor 20 is a cylindrical heater 12. It is arrange | positioned so that it may be located inside. Specifically, the abnormal heating detection sensor 20 is fixed to the sensor mounting portion 115 provided on the cap member 114, and a part of the abnormal heating detection sensor 20 is connected to the other end of the heater 12 and its radial direction. It was inserted so as to overlap. Unlike the human body local cleaning device 1 according to the first embodiment, all of the temperature detection units 21 of the abnormal heating detection sensor 20 are located in the fluid space 111. An O-ring is fitted between the flange portion 22 formed on the abnormal heating detection sensor 20 and the bottom surface of the sensor mounting portion 115 to prevent water leakage through the opening formed in the cap.

  In the present embodiment, the central axis of the abnormal heating detection sensor 20 substantially coincides with the central axis of the heater 12. The flow path inside the heater 12 is a cylindrical flow path from one end portion (inlet) to the location where the abnormal heating detection sensor 20 is located, but from the location where the abnormal heating detection sensor 20 is located. Up to the other end (exit) is an annular flow path formed between the outer peripheral surface of the abnormal heating detection sensor 20 and the inner peripheral surface of the heater 12.

  When the cleaning water temperature is heated by the heater 12, the control means 30 determines that the detection temperature of the abnormal heating detection sensor 20 is equal to or higher than a predetermined threshold value, and determines that the heater is in an empty state. 12 output is stopped. As described above, even when the abnormal heating detection sensor 20 is arranged in the fluid space 111, the empty state can be detected.

  In addition, since the abnormal heating detection sensor 20 is disposed inside the one end portion of the cylindrical heater 12, the outlet side of the flow path inside the heater 12 is an annular flow path. That is, the cleaning water flowing inside the heater 12 is divided into an annular shape on the outlet side, then passes through a gap between the other end surface of the heater 12 and the tip end surface of the cap, and makes a U-turn so that the outer periphery of the heater 12 It flows into the gap between the surface and the inner peripheral surface of the main body 11. That is, the flow of the cleaning water flowing through the fluid space 111 is smoothed by folding back at the other end portion of the fluid space 111 (air accumulation or the like is unlikely to occur at the folded portion). As described above, the abnormal heating detection sensor 20 functions not only as an element for preventing emptying but also as an element for smoothening the flow in the fluid space 111.

  As the shape of the stirring region 113 provided in the human body local cleaning device 1 (1a) according to the embodiment of the present invention, in addition to the meandering flow path described above, the following modes (first mode to sixth mode) are provided. It can be considered.

  In the agitation region 113a of the first embodiment shown in FIG. 6A, the washing water flowing through the channel 51a having a relatively small cross-sectional area enters the channel 52a having a relatively large cross-sectional area, and then the cross-sectional area again. A series of flow paths entering the small flow path 53a is constructed. In the stirring region 113b of the second mode shown in FIG. 6B, the washing water flowing through the flow path 51b having a relatively large cross-sectional area enters the flow path 52b having a relatively small cross-sectional area, and then the cross-sectional area again. A series of flow paths entering the large flow path 53b are constructed. That is, in the stirring regions 113a and 113b of the first and second embodiments, the washing water pressure changes repeatedly as the washing water flows through the flow path whose cross-sectional area changes along the washing water flow. In this embodiment, the stirring action is exhibited. In addition, the number of repetitions of the change in the cross-sectional area of the flow path and the difference between the cross-sectional areas of the flow path having a relatively large cross-sectional area and the flow path having a relatively small cross-sectional area can be appropriately changed.

  In the stirring region 113c of the third aspect shown in FIG. 6C, the flow path is bent. The stirring region 113d of the fourth aspect shown in FIG. 6 (d) is provided with a partition plate 51d that prevents the flow of cleaning water in the flow path. That is, the agitation region 113 of the third aspect and the fourth aspect is an aspect in which the agitation action is exhibited by changing the direction in which the washing water flows. The number of times of changing the flow (number of partition plates 51d) can be changed as appropriate. It can be said that the meandering flow path which is the stirring region 113 of the human body local cleaning device 1 (1a) according to the above embodiment is also one aspect of this.

  The stirring region 113e of the fifth aspect shown in FIG. 6 (e) is a member in which a member 51e (mesh (mesh), porous plate, etc.) having a large number of holes formed in the flow path is arranged. In the stirring region 113f of the sixth aspect shown in FIG. 6 (f), an impeller 51f that rotates by water pressure is disposed in the flow path. In other words, the stirring regions 113e and 113f of the fifth and sixth modes are in a mode in which the stirring action is exhibited by the members installed in the flow path disturbing the flow of the cleaning water (making it a turbulent flow). Is.

  The stirring regions 113a to 113f of the first aspect to the sixth aspect may be used in combination. For example, the mode shown in FIG. 6 (e) and FIG. 6 (f) is a channel having a relatively large cross-sectional area in which a member for disturbing the flow of cleaning water is installed, and its upstream side and downstream side. The flow path is a flow path having a relatively small cross-sectional area. That is, the mode shown in FIG. 6E is a mode in which the first mode and the fifth mode are combined, and the mode shown in FIG. 6F can also be said to be a mode in which the first mode and the sixth mode are combined.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

1 (1a) Human body local cleaning device 2 Washing water heating device 10 Heat exchange unit 11 Body portion 111 Fluid space 112 Relay channel 113 Stirring area 12 Heater 20 Abnormal heating detection sensor 21 Temperature detection unit 30 Control means

Claims (3)

A heat exchange unit having a fluid space in which the cleaning water flows and a main body portion in which a stirring region for stirring the cleaning water heated in the fluid space is formed; and a heater disposed in the fluid space;
The heater is positioned so as to straddle the fluid space and the relay channel between the fluid space and the stirring region, and is provided so as to narrow the region through which the wash water can pass in the relay channel , and the heater A temperature sensor in contact with the
Control means for stopping the output of the heater when the temperature detected by the temperature sensor exceeds a predetermined threshold;
A human body local cleaning apparatus comprising: Claim wash water exiting the fluid space, passes through the gap between the outer surface and the inner surface of the relay flow path of the temperature sensor, characterized in that it is configured to enter into the stirring zone human private cleaning apparatus according to 1. The human body local cleaning device according to claim 1 , wherein the stirring region is a meandering flow path.

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