Bathroom air conditioner

Abstract

To provide a bathroom air conditioner capable of determining a normal state and an abnormal state of a flow passage opening / closing part regardless of leakage amount of hot water passing through the flow passage opening / closing part and an environmental temperature.SOLUTION: A bathroom air conditioner includes: a hot water flow passage temperature measurement part 24 measuring a neighborhood temperature of a first hot water flow passage 21; an air temperature measurement part 20 measuring a temperature of air sucked into a body case 2; and a first state determination part 36c determining a normal state or an abnormal state of a first hot water flow passage opening / closing part 23 on the basis of a first temperature difference ΔT1 between a hot water flow passage temperature TEMP2 measured by the hot water flow passage temperature measurement part 24 and an air temperature TEMP1 measured by the air temperature measurement part 20 and first hot water flow passage opening / closing information of the first hot water flow passage opening / closing part 23. A circulation air course 17 is an air course sequentially communicating a first suction port 13a, a heat exchanger 6 and a blowout port 14. A temperature measurement air course 18 is an air course communicating a second suction port 13b and the circulation air course 17. The air temperature measurement part 20 is provided in the temperature measurement air course 18.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bathroom air-conditioner. [Background technology]

[0002] Conventionally, this type of bathroom air conditioner is known to be installed on the ceiling of a bathroom and to perform functions such as ventilation, drying, heating, cool air, and mist operation. Drying and heating operations are performed by heating the air drawn into the bathroom air conditioner.

[0003] One method for heating air is to use a heat source machine. A heat source machine is a device that uses gas to heat water. The hot water boiled by the heat source machine, i.e., hot water, can be used to supply hot water to baths, etc., and can also be used to heat air, etc., through heat exchange. The heat source machine supplies hot water to a heat exchanger installed in a bathroom air conditioner, and the heat exchanger that receives the hot water exchanges heat with the air, heating the air.

[0004] Furthermore, the hot water produced by the heat source unit is used not only for bathroom air conditioners but also for floor heating and other applications. Hot water is supplied from the heat source unit to the bathroom air conditioner, floor heating, and other applications through a hot water flow path, but these hot water flow paths are connected. Therefore, for example, when hot water is not needed in the bathroom air conditioner, a mechanism is required to stop the supply of hot water to the bathroom air conditioner. To achieve this mechanism, the bathroom air conditioner is equipped with a flow path opening / closing unit for opening and closing the hot water flow path. An example of a flow path opening / closing unit is a thermal valve that uses a thermal element to open and close a valve.

[0005] If the flow path opening and closing section malfunctions for some reason, for example, if the valve does not close properly, when hot water starts to move through the hot water flow path due to floor heating or hot water supply, hot water will also be supplied to the bathroom air conditioner. As a result, it is expected that an unintended malfunction will occur, such as hot air coming out even though the cool air operation has been instructed.

[0006] To address this issue, for example, the bathroom air-conditioner disclosed in Patent Document 1 is equipped with a temperature measurement unit near the flow path that measures the temperature near the flow path through which hot water flows.The temperature measured by the temperature measurement unit near the flow path is used to determine whether the flow path opening / closing unit is in a normal state or an abnormal state. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-130712 Summary of the Invention [Problem to be solved by the invention]

[0008] Such bathroom air conditioners may not correctly determine an abnormality when the valve of the flow path opening / closing unit does not close properly. For example, if the amount of hot water leaking due to a malfunction is small, the temperature measured by the temperature measurement unit near the flow path may not reach the predetermined temperature. In such cases, the bathroom air conditioner does not determine an abnormality even though the flow path opening / closing unit is in an abnormal state. Furthermore, if the predetermined temperature for determining an abnormality is set low to accommodate a small amount of hot water leakage, the temperature measured by the temperature measurement unit near the flow path may reach the predetermined temperature when the environmental temperature, including the bathroom air conditioner, is high, such as in summer. In such cases, the bathroom air conditioner determines an abnormality even though the flow path opening / closing unit is in a normal state.

[0009] Therefore, the present invention aims to solve the above-mentioned conventional problems and to provide a bathroom air conditioner that can determine whether the flow path opening and closing section is in a normal or abnormal state regardless of the amount of hot water leaking through the flow path opening and closing section or the ambient temperature. [Means for solving the problem]

[0010] and a first state determination unit that determines whether the first hot water flow path opening / closing unit is in a normal state or an abnormal state based on a first temperature difference between the hot water flow path temperature measured by the hot water flow path temperature measurement unit and the air temperature measured by the air temperature measurement unit and first hot water flow path opening / closing information of the first hot water flow path opening / closing unit. The air intake has a first intake and a second intake, The main body case is equipped with a circulation air duct and a temperature measurement air duct, the circulation air duct being an air duct that sequentially connects the first air intake, the heat exchanger, and the air outlet, the temperature measurement air duct being an air duct that connects the second air intake and the circulation air duct, and the air temperature measuring unit being provided within the temperature measurement air duct, thereby achieving the intended purpose. [Effects of the Invention]

[0011] According to the present invention, it is possible to obtain the effect of determining whether a flow path opening / closing unit is in a normal state or an abnormal state regardless of the amount of hot water leaking through the flow path opening / closing unit or the environmental temperature. [Brief explanation of the drawings]

[0012] [Figure 1] Schematic diagram showing a bathroom heater / dryer according to the present invention. [Figure 2] (a) Side cross-sectional view (b) Perspective view [Figure 3] Side cross-sectional view [Figure 4] Schematic diagram showing the configuration of the remote control [Figure 5] Block diagram showing the configuration of the control unit [Figure 6] A flowchart showing a procedure for determining an abnormal state of the first hot water flow passage opening / closing section by the control section. [Figure 7]A flowchart showing a procedure for determining an abnormal state of the second hot water flow passage opening / closing section by the control section. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014] The configuration of a bathroom heater / dryer according to the present invention will be outlined below using Figures 1 and 2. Figure 1 is a schematic diagram showing the bathroom heater / dryer, Figure 2(a) is a side cross-sectional view of the bathroom heater / dryer, Figure 2(b) is a perspective view of the bathroom heater / dryer, and Figure 3 is a side cross-sectional view of the bathroom heater / dryer at a different position from that shown in Figure 2(a).

[0015] Bathroom heater / dryer 1 is a type of bathroom air conditioner that is installed on the ceiling of a bathroom and controls the temperature, humidity, and air quality of the bathroom through ventilation, drying, heating, cool air, mist operation, etc. Bathroom heater / dryer 1 comprises main body case 2, intake port 13, outlet port 14, heat exchanger 6, circulating air duct 17, temperature measurement air duct 18, blower 19, and air temperature measurement unit 20.

[0016] Main body case 2 is the outer frame of bathroom heater / dryer 1, which houses components such as blower 19. When bathroom heater / dryer 1 is installed on the ceiling of a bathroom, main body case 2 is exposed on the back side opposite the ceiling.

[0017] Inlet 13 is an opening for drawing air into the bathroom heater / dryer 1, and is equipped with a first inlet 13a, which is an inlet to the circulation air duct 17, and a second inlet 13b, which is an inlet to the temperature measurement air duct 18.

[0018] Air outlet 14 is an opening for blowing air out of bathroom heater / dryer 1.

[0019] The heat exchanger 6 is a member for exchanging heat between the air passing through the circulating air passage 17 and the hot water passing through the heat exchanger 6. The air receives heat by exchanging heat with the hot water.

[0020] Circulation air duct 17 is an air duct for heating and humidifying the air drawn in through first air inlet 13a and discharging it from air outlet 14. Heat exchanger 6, blower 19, and humidification unit 10 (described later) are arranged on circulation air duct 17 in the order that the air passes through. That is, circulation air duct 17 is an air duct that sequentially connects first air inlet 13a, heat exchanger 6, blower 19, and air outlet 14.

[0021] Temperature measurement air duct 18 is an air duct through which air drawn in from second air inlet 13b passes, and is provided adjacent to circulation air duct 17. Temperature measurement air duct 18 is an air duct that connects second air inlet 13b and circulation air duct 17. The outlet of temperature measurement air duct 18 connects to circulation air duct 17 on the upwind side of blower 19. Temperature measurement air duct 18 is separated from circulation air duct 17 by wall 18a, and is therefore less susceptible to the effects of radiant heat from the hot water passing through heat exchanger 6. Note that "less susceptible to radiant heat" here means that the air that has entered temperature measurement air duct 18 experiences only a small change in temperature due to radiant heat from the hot water passing through heat exchanger 6 while passing through temperature measurement air duct 18.

[0022] Wall 18a is provided in main body case 2 between circulation air passage 17 and temperature measurement air passage 18. Wall 18a is preferably made of a heat insulating material, and the shape of wall 18a is not limited as long as it makes it difficult for the air in temperature measurement air passage 18 to be affected by radiant heat from the hot water.

[0023] The blower 19 is disposed on the circulating air passage 17 and includes a fan 37 and a fan motor (not shown). The fan 37 is a centrifugal fan such as a sirocco fan. The fan motor supports the fan 37 on a shaft so that the fan 37 can rotate.

[0024] Air temperature measurement unit 20 is a temperature sensor that is disposed on temperature measurement air duct 18 and measures the temperature of air drawn into main body case 2 from air inlet 13. The temperature of the air flowing through temperature measurement air duct 18, which is less affected by radiant heat from the hot water passing through heat exchanger 6, is close to the temperature before passing through heat exchanger 6 in circulation air duct 17. Therefore, the temperature of the air passing through heat exchanger 6 in circulation air duct 17 can be predicted (pseudo-measured) from the temperature of the air in temperature measurement air duct 18 measured by air temperature measurement unit 20.

[0025] If the air temperature measuring unit 20 is provided inside the circulating air duct 17, it may not be possible to accurately measure the temperature of the sucked air due to the influence of radiant heat from the heat exchanger 6. With the above configuration, it is possible to suppress the influence of radiant heat from the hot water passing through the heat exchanger 6 and to predict (pseudo-measure) the temperature of the air passing through the heat exchanger 6. Therefore, it is possible to more accurately measure the temperature of the air passing through the heat exchanger 6.

[0026] Furthermore, temperature measurement air duct 18 only needs to measure the temperature of the air passing through heat exchanger 6 while suppressing the influence of radiant heat from the hot water passing through heat exchanger 6, and the amount of air required for this is extremely small. In contrast, circulation air duct 17 is an air duct for heating the air using heat exchanger 6, and the greater the amount of air passing through per unit time, the greater the heating efficiency. For the above reasons, it is desirable that the opening area on the windward side of temperature measurement air duct 18 be smaller than the opening area on the windward side of circulation air duct 17.

[0027] As shown in Figures 1 and 2(a), it is desirable that some or all of the air blown from the outlet of temperature measurement air duct 18 into circulation air duct 17 pass through heat exchanger 6. The location of the outlet of temperature measurement air duct 18 is not limited as long as it can measure the temperature of the air passing through heat exchanger 6 while suppressing the effects of radiant heat from the hot water passing through heat exchanger 6. Furthermore, in circulation air duct 17, the heating efficiency increases as the amount of air passing through heat exchanger 6 per unit time increases. For these reasons, a bathroom air-conditioner with higher heat exchange efficiency can be obtained by configuring some or all of the air blown from the outlet of temperature measurement air duct 18 into circulation air duct 17 to pass through heat exchanger 6.

[0028] Furthermore, the bathroom heater / dryer 1 is equipped with a first hot water flow path 21, a first hot water flow path opening / closing unit 23, a hot water flow path temperature measuring unit 24, a second hot water flow path 22, a water heat exchanger 9, and a second hot water flow path opening / closing unit 25.

[0029] The first hot water flow path 21 is a flow path for supplying hot water leaving the heat source unit to the heat exchanger 6 and returning the hot water supplied to the heat exchanger 6 to the heat source unit. The hot water passes through the first hot water flow path 21 in the order of the heat source unit, the first hot water flow path opening / closing unit 23, the heat exchanger 6, and then the heat source unit. In other words, the first hot water flow path 21 is configured so that hot water flows and the heat exchanger 6 is provided midway along the flow path.

[0030] The first hot water flow path opening / closing unit 23 is a valve that opens and closes the first hot water flow path 21 to control the supply and stop of hot water to the heat exchanger 6. An example of the first hot water flow path opening / closing unit 23 is a thermal valve that opens and closes the valve by moving a thermal element. A hot water flow path temperature measuring unit 24 is arranged on the outer peripheral surface of the piping that constitutes the first hot water flow path 21 from the first hot water flow path opening / closing unit 23 to the heat exchanger 6.

[0031] The hot water flow path temperature measurement unit 24 is a temperature sensor that measures the temperature in the vicinity of the first hot water flow path 21. The temperature in the vicinity of the first hot water flow path 21 refers to the temperature of the piping that constitutes the first hot water flow path 21 within a range that is affected by at least one of heat conduction, heat transfer, and heat radiation caused by the hot water passing through the first hot water flow path 21. As a result, the hot water flow path temperature measurement unit 24 can be expected to be effective in accurately measuring the temperature rise of the piping that constitutes the first hot water flow path 21 due to the heat of the hot water, even when the amount of hot water passing through the first hot water flow path 21 is small.

[0032] The second hot water flow path 22 is a hot water flow path branched off from the first hot water flow path 21 leading from the heat source machine to the first hot water flow path opening / closing unit 23. The second hot water flow path 22 is a flow path for supplying hot water to the water heat exchanger 9 and returning the hot water supplied to the water heat exchanger 9 to the heat source machine. After branching off from the first hot water flow path 21, the hot water passes through the second hot water flow path 22, in this order: the water heat exchanger 9 and the second hot water flow path opening / closing unit 25. Then, the hot water that has passed through the second hot water flow path opening / closing unit 25 merges with the hot water passing through the first hot water flow path 21 leading from the heat exchanger 6 to the heat source machine, and returns to the heat source machine.

[0033] The water heat exchanger 9 is a component for exchanging heat between tap water passing through the humidification flow path 8 and hot water passing through the water heat exchanger 9. The tap water receives heat by exchanging heat with the hot water. The heated tap water flows into a heat-receiving water flow path 26 connected to the water heat exchanger 9. The humidification flow path 8 and the heat-receiving water flow path 26 will be described later.

[0034] The second hot water flow path opening / closing unit 25 is a valve that adjusts the opening degree of the first hot water flow path 21 in order to control the amount of hot water supplied to the water heat exchanger 9. An example of the second hot water flow path opening / closing unit 25 is a flow rate adjustment valve that opens and closes the valve using a stepping motor and rotation of a gear.

[0035] As shown in Fig. 2(a), the main body case 2 is generally box-shaped with an open bottom, and a first hot water flow path 21 and a second hot water flow path 22 are provided between one side surface 2a of the main body case 2 and the heat exchanger 6. In addition, a temperature measurement air passage 18 is provided between the other side surface 2b of the main body case 2 and the heat exchanger 6. (A wall 18a is provided between the heat exchanger 6 and the temperature measurement air passage 18.) With the above configuration, the first hot water flow path 21 and the second hot water flow path 22 are provided on one side surface 2a as viewed from the heat exchanger 6, while the temperature measurement air path 18 is provided on the other side surface 2b as viewed from the heat exchanger 6. Within the main body case 2, the temperature measurement air path is less susceptible to the effects of radiant heat because a sufficient distance is provided between the first hot water flow path 21 and the second hot water flow path 22, through which hot water flows and radiant heat is generated by the flowing hot water. Furthermore, because a wall 18a is provided between the heat exchanger 6 and the temperature measurement air path 18, the temperature measurement air path is even less susceptible to the effects of radiant heat from the first hot water flow path 21 and the second hot water flow path 22.

[0036] Bathroom heater / dryer 1 further includes water inlet 7, humidification flow path 8, hot water receiving flow path 26, hot water flow path temperature measurement unit 27, and humidification unit 10.

[0037] Water inlet 7 is an opening that connects to a water supply and allows tap water for humidification to enter bathroom heater / dryer 1. The tap water taken into bathroom heater / dryer 1 from water inlet 7 passes through humidification flow path 8, water heat exchanger 9, hot water flow path 26, and humidification unit 10, in that order.

[0038] The humidification flow path 8 is a flow path for guiding tap water taken in from the water supply port 7 to the water heat exchanger 9.

[0039] The heated water flow path 26 is a flow path for guiding heated tap water to the humidification unit 10.

[0040] The hot water flow path temperature measuring unit 27 is a temperature sensor that measures the temperature in the vicinity of the hot water flow path 26 through which tap water that has received heat after passing through the water heat exchanger 9 passes. The hot water flow path temperature measuring unit 27 is disposed on the outer peripheral surface of the piping that constitutes the hot water flow path 26. The temperature in the vicinity of the hot water flow path 26 refers to the temperature of the piping that constitutes the hot water flow path 26 within a range that is affected by at least one of thermal conduction, heat transfer, and thermal radiation by the tap water that has received heat. As a result, the hot water flow path temperature measuring unit 27 can be expected to accurately measure the temperature rise in the piping that constitutes the hot water flow path 26 due to the tap water that has received heat, even when the amount of hot water passing through the second hot water flow path 22 is small.

[0041] Humidifying unit 10 humidifies the air passing through circulating air passage 17. Humidifying unit 10 includes an atomizing section (not shown) that atomizes water. One example of the atomizing method used by the atomizing section is to crush the water using centrifugal force.

[0042] The heat exchanger 6 includes an inner heat exchanger hot water flow path 38 through which hot water passes.

[0043] 2(a), 2(b), and 3, the heat-exchanger hot water flow passage 38 extends in a curved manner so as to form multiple stages in the vertical direction of the main body case 2, and includes an inlet section 38a where hot water flows in from the first hot water flow passage 21 and an outlet section 38b where hot water flows out to the first hot water flow passage 21. The inlet section 38a is provided in the uppermost stage of the heat-exchanger hot water flow passage 38, and the outlet section 38b is provided in the lowermost stage of the heat-exchanger hot water flow passage 38. The hot water that flows into the heat-exchanger hot water flow passage 38 from the inlet section 38a exchanges heat with air passing through the heat exchanger 6 from the bottom to the top of the main body case 2, and flows to the outlet section 38b while its temperature decreases.

[0044] In this way, the temperature of the hot water flowing through the in-heat-exchanger hot water flow passage 38 of the heat exchanger 6 decreases from the inlet portion 38a to the outlet portion 38b by exchanging heat with the air passing through the heat exchanger 6. The air flowing through the heat exchanger 6 flows from the lowest stage side, which has the outlet portion 38b in the in-heat-exchanger hot water flow passage 38, to the highest stage side, which has the inlet portion 38a in the in-heat-exchanger hot water flow passage 38. That is, the circulation air passage 17 allows air to pass through the heat exchanger 6 from the bottom to the top of the main body case 2, and the heat exchanger 6 has an internal hot water flow path 38 that passes hot water. The internal hot water flow path 38 has an inlet section 38a where hot water flows from the first hot water flow path 21 into the heat exchanger 6, and an outlet section 38b where hot water flows out from the heat exchanger 6 to the first hot water flow path 21. The internal hot water flow path 38 extends while curving to form multiple tiers arranged in the vertical direction of the main body case 2, and the inlet section 38a is located at the uppermost position in the internal hot water flow path 38 of the heat exchanger, and the outlet section 38b is located at the lowermost position in the internal hot water flow path 38 of the heat exchanger.

[0045] With the above configuration, the temperature of the air flowing inside the heat exchanger 6 gradually increases as it flows from the outlet section 38b, where the hot water temperature is low, to the inlet section 38a, where the hot water temperature is high, in the hot water flow path 38 inside the heat exchanger, thereby optimizing the heat exchange efficiency in the hot water flow path 38 inside the heat exchanger.

[0046] Furthermore, it is desirable to provide the air temperature measuring unit 20 on the lower side of the main body case 2 in the temperature measurement air duct 18 (on the side of the outlet portion 38b in the heat exchanger hot water flow path 38). This means that the air temperature measuring unit 20 is provided at a position away from the inlet portion 38a, which is the hottest part in the heat exchanger 6, and as a result, it is less susceptible to the influence of radiant heat from the hot water passing through the heat exchanger 6.

[0047] Bathroom heater / dryer 1 also includes control unit 36, the details of which will be described later.

[0048] The above is an outline of the configuration of bathroom heater / dryer 1. Next, an outline of remote control 33 used to operate bathroom heater / dryer 1 will be explained with reference to FIG.

[0049] Remote control 33 is a device for remotely controlling bathroom heater / dryer 1. Remote control 33 is often installed on the wall of a changing room. Remote control 33 includes physical buttons 34 and notification unit 35.

[0050] Physical button 34 is an operation unit for selecting the operation type of bathroom heater / dryer 1, such as ventilation, heating, drying, cool air, or mist operation, or stopping operation.

[0051] Notification unit 35 notifies the user of information related to bathroom heater / dryer 1 through at least one of the following means: visual and / or auditory. Notification means include, for example, a display such as an LCD panel or audio guidance through a speaker. Information related to bathroom heater / dryer 1 includes the selected operation mode and any abnormal conditions of bathroom heater / dryer 1, which will be described later.

[0052] The above is an overview of remote control 33. Next, the configuration of control unit 36, which controls the operation of bathroom heater / dryer 1, will be described with reference to FIG.

[0053] The control unit 36 ​​is a printed circuit board (PCB) that controls the functions of the humidification unit 10, the blower 19, etc. The control unit 36 ​​is stored in a storage unit (not shown) to avoid exposure to moisture generated from a bathroom or the like. The storage unit has a highly sealed structure to prevent moisture from entering the interior. The control unit 36 ​​includes an input unit 36a, a processing unit 36b, a first state determination unit 36c, a second state determination unit 36d, a memory unit 36e, a timer unit 36f, and an output unit 36h.

[0054] The input unit 36a is electrically connected to the air temperature measurement unit 20, the hot water passage temperature measurement unit 24, the hot water passage temperature measurement unit 27, and the remote control 33 so as to be able to communicate with each other. The input unit 36a receives the air temperature TEMP1 measured by the air temperature measurement unit 20, the hot water passage temperature TEMP2 measured by the hot water passage temperature measurement unit 24, the hot water passage temperature TEMP3 measured by the hot water passage temperature measurement unit 27, and information on the operation type input from the remote control 33.

[0055] The processing unit 36b processes information to be output to the output unit 36h based on the information received by the input unit 36a, and information from the first state determination unit 36c, the second state determination unit 36d, the memory unit 36e, and the timing unit 36f.

[0056] The first state determination unit 36c determines whether the first hot water flow path opening / closing unit 23 is in a normal state or an abnormal state based on the information received by the input unit 36a, the information stored in the memory unit 36e, and the timer unit 36f.

[0057] The second state determination unit 36d determines whether the second hot water passage opening / closing unit 25 is in a normal state or an abnormal state based on the information received by the input unit 36a, the information stored in the memory unit 36e, and the timer unit 36f.

[0058] The memory unit 36e stores information such as air volume information of the blower 19, opening / closing information of the first hot water flow path opening / closing unit 23, opening / closing information of the second hot water flow path opening / closing unit 25, and predetermined temperature information for determining whether the first hot water flow path opening / closing unit 23 or the second hot water flow path opening / closing unit 25 is in an abnormal state.

[0059] The timing unit 36f measures the remaining time of the drying / heating operation, the time required for the first state determination unit 36c to determine whether the first hot water flow path opening / closing unit 23 is in an abnormal state, and the time required for the second state determination unit 36d to determine whether the second hot water flow path opening / closing unit 25 is in an abnormal state.

[0060] The output unit 36h is electrically and communicatively connected to the humidification unit 10, the blower 19, the first hot water flow path opening and closing unit 23, the second hot water flow path opening and closing unit 25, and the remote control 33. The output unit 36h outputs the information processed by the processing unit 36b to any one of the humidification unit 10, the blower 19, the first hot water flow path opening and closing unit 23, the second hot water flow path opening and closing unit 25, and the remote control 33, or to a plurality of them simultaneously.

[0061] The above is the configuration of control unit 36. Next, operation of bathroom heater / dryer 1 that uses the heat of hot water will be described.

[0062] Bathroom heater / dryer 1 can perform heating and mist operations by utilizing the heat of water (for example, 80°C) boiled by a heat source device.

[0063] To start heating operation, the user first selects heating operation using physical button 34 on remote control 33. When control unit 36 ​​receives a heating operation instruction via input unit 36a, it reads the information necessary for heating operation from memory unit 36e via processing unit 36b. Control unit 36 ​​then issues operational instructions to the components of bathroom heater / dryer 1 via output unit 36h to execute the read information necessary for heating operation. Examples of operational instructions necessary for heating operation include starting blower 19 and opening the valve of the first hot water flow path opening / closing unit. Heat exchanger 6 is heated by passing hot water through first hot water flow path 21. Heat exchanger 6, heated by the hot water, exchanges heat with air drawn in through intake port 13 by blower 19. The heated air that passes through heat exchanger 6, i.e., hot air, passes through circulation air path 17 and is blown out through outlet 14. This facilitates drying of the bathroom, particularly in winter, when it is difficult to dry the bathroom, thereby preventing mold growth. Also, in winter, warming the bathroom before bathing can be expected to reduce the possibility of bathers experiencing heat shock.

[0064] To activate the mist mode, the user first selects the mist mode using physical button 34 on remote control 33. As with the heating mode described above, control unit 36 ​​issues instructions to the components of bathroom heater / dryer 1 for the operations required for the mist mode. Examples of instructions for the operations required for the mist mode include starting humidification unit 10, starting blower 19, and opening second hot water flow path opening / closing unit 25. Water heat exchanger 9 is heated by passing hot water through second hot water flow path 22. The water heat exchanger 9, heated by the hot water, exchanges heat with tap water passing through humidification flow path 8. The heated water that passes through water heat exchanger 9 passes through hot water flow path 26 and is supplied to humidification unit 10. The water supplied to humidification unit 10 becomes micromist, with particle sizes of less than a micrometer, and humidifies the air passing through circulation air path 17. The air humidified by the micromist is then blown out through outlet 14. This allows users to warm the bathroom while humidifying the air before bathing, for example. Also, while bathing, it can create a wet sauna called a mist sauna. A wet sauna is a type of hot air bath characterized by lower temperature and higher humidity than a dry sauna.

[0065] In this way, bathroom heater / dryer 1 can control the temperature and humidity of the bathroom by using the hot water produced by the heat source device.

[0066] The hot water produced by the heat source device is used not only for bathroom heater / dryer 1, but also for hot water supply and floor heating. The hot water leaving the heat source device passes through several branched flow paths before being supplied to a hot water faucet or floor heating device. The hot water flow path 5 disclosed in the present invention is one of the aforementioned branched flow paths. The hot water produced by the heat source device typically passes through several branched flow paths before returning to the heat source device. For this reason, devices that use hot water are equipped with valves that open and close the flow path through which hot water flows, such as the first hot water flow path opening / closing unit 23 and the second hot water flow path opening / closing unit 25 disclosed in the present invention, to prevent the hot water from passing through the flow path when hot water supply is not required.

[0067] Closing the valve reduces the loss of thermal energy that occurs when hot water flows to devices that do not require hot water. Bathroom heater / dryer 1 also features a cool air operation that, when cleaning or other tasks are performed in a hot bathroom environment, such as summer, without using hot water for heat exchange, provides a cooling sensation to the user through the circulating airflow of fan 19. Without first hot water flow path opening / closing unit 23, if hot water supply to the bathroom or kitchen is started during the cool air operation, hot water would also be supplied to heat exchanger 6, causing hot air to be emitted. Second hot water flow path opening / closing unit 25 is also a valve that can adjust the opening degree of second hot water flow path 22 to control the temperature of the heated water. The presence of second hot water flow path opening / closing unit 25 allows the temperature of the hot water mist to be adjusted. Without second hot water flow path opening / closing unit 25, the temperature of the hot water mist could not be adjusted, potentially resulting in the generation of high-temperature mist that is inconvenient for the user.

[0068] For these reasons, first hot water flow path opening / closing unit 23 and second hot water flow path opening / closing unit 25 are essential components for supplying hot water at the appropriate time to bathroom heater / dryer 1. For this reason, it is important to accurately determine whether first hot water flow path opening / closing unit 23 and second hot water flow path opening / closing unit 25 are in an abnormal state. Therefore, control unit 36 ​​is equipped with first state determination unit 36c, which determines whether first hot water flow path opening / closing unit 23 is in an abnormal state relative to the closed state of the valve, and second state determination unit 36d, which determines whether second hot water flow path opening / closing unit 25 is in an abnormal state relative to the closed state of the valve.

[0069] Next, a flow of determining and reporting an abnormal state of the first hot water passage opening / closing unit 23 by the control unit 36 ​​will be described with reference to the flowchart of FIG.

[0070] An abnormal state of the first hot water flow path opening / closing unit 23 refers to a state in which, even though the control unit 36 ​​instructs the first hot water flow path opening / closing unit 23 to close the valve, the valve does not close for some reason, causing hot water to flow into the first hot water flow path 21.

[0071] When bathroom heater / dryer 1 is selected to stop operation via remote control 33, input unit 36a receives the operation stop information. Based on the operation stop information received by input unit 36a, processing unit 36b reads information about the operation processing of blower 19 and first hot water flow path opening / closing unit 23 from memory unit 36e. Output unit 36h then issues instructions to blower 19, first hot water flow path opening / closing unit 23, and other units to execute the information read from memory unit 36e (step S1). For example, if heating operation, one of the operation types, was selected before the operation stop instruction was issued, operations such as stopping blower 19 and closing the valve of first hot water flow path opening / closing unit 23 are performed.

[0072] Next, the timer 36f measures the time that has elapsed since the selection to stop operation was made. The control unit 36 ​​determines whether the time measured by the timer 36f has reached a first predetermined time TIME1 (e.g., 60 minutes) (step S2). If the first predetermined time TIME1 has not been reached, the control unit 36 ​​repeats step S2.

[0073] The first predetermined time TIME1 is preferably selected to be the time from when operation stop is selected until the air temperature TEMP1 and the hot water passage temperature TEMP2 drop to room temperature and stabilize.

[0074] When the control unit 36 ​​determines that the first predetermined time TIME1 has been exceeded, it uses the first state determination unit 36c to determine whether the first hot water flow path opening / closing unit 23 is in a normal state or an abnormal state based on the opening / closing information of the first hot water flow path opening / closing unit 23 and the hot water flow path temperature TEMP2.

[0075] First, the control unit 36 ​​determines whether the hot water flow path temperature TEMP2 exceeds a first predetermined temperature A (step S3). If it is determined that the hot water flow path temperature TEMP2 exceeds the first predetermined temperature A, the control unit 36 ​​determines whether the time during which the hot water flow path temperature TEMP2 exceeds the first predetermined temperature A exceeds a second predetermined time TIME2 (step S4). If the time during which the hot water flow path temperature TEMP2 exceeds the first predetermined temperature A exceeds the second predetermined time TIME2, the first state determination unit 36c determines that the first hot water flow path opening / closing unit 23 is in an abnormal state. Then, the control unit 36 ​​controls the notification unit 35 to start notifying the abnormal state (step S5).

[0076] Even after the notification unit 35 starts notifying the abnormal state, the control unit 36 ​​continues to determine whether the hot-water passage temperature TEMP2 exceeds the first predetermined temperature A (step S6).

[0077] When the hot water passage temperature TEMP2 becomes equal to or lower than the first predetermined temperature A, the first state determination unit 36c determines that the first hot water passage opening / closing unit 23 is in a normal state. Then, the control unit 36 ​​controls the notification unit 35 to stop notifying the abnormal state (step S7). After stopping the notification of the abnormal state, the processing step by the control unit 36 ​​returns to step S3.

[0078] If the first state determination unit 36c determines that the hot water passage temperature TEMP2 does not exceed the first predetermined temperature A, it determines whether the first temperature difference ΔT1 between the air temperature TEMP1 and the hot water passage temperature TEMP2 exceeds a second predetermined temperature B (e.g., 10°C) (step S7).

[0079] If the first temperature difference ΔT1 exceeds the second predetermined temperature B, the first state determination unit 36c determines whether the time during which the first temperature difference ΔT1 exceeds the second predetermined temperature B exceeds a third predetermined time TIME3 (step S8). If the time during which the first temperature difference ΔT1 exceeds the second predetermined temperature B exceeds the third predetermined time TIME3, the first state determination unit 36c determines that the first hot water flow path opening / closing unit 23 is in an abnormal state. Then, the control unit 36 ​​controls the notification unit 35 to start notifying of the abnormal state (step S9).

[0080] Even after the notification unit 35 starts notifying of the abnormal state, the first state determination unit 36c determines whether the first temperature difference ΔT1 exceeds the second predetermined temperature B (step S10). If the first temperature difference ΔT1 does not exceed the second predetermined temperature B, the control unit 36 ​​determines that the first hot water flow path opening / closing unit 23 is in a normal state, and instructs the notification unit 35 to stop notifying of the abnormal state (step S11).

[0081] Control unit 36 ​​repeats the processes from step S3 to step S11 until input unit 36a receives information about the start of operation of bathroom heater / dryer 1, such as heating operation or drying operation (step S12).

[0082] The above is the description of the flow of determining and notifying the abnormal state of the first hot water passage opening / closing unit 23 by the control unit 36.

[0083] Next, a flow of determining and reporting an abnormal state of the second hot water passage opening / closing unit 25 by the control unit 36 ​​will be described with reference to FIG.

[0084] An abnormal state of the second hot water flow path opening / closing unit 25 refers to a state in which, even though the control unit 36 ​​instructs the second hot water flow path opening / closing unit 25 to close the valve, the valve does not close for some reason, causing hot water to flow into the second hot water flow path 22.

[0085] When the control unit 36 ​​receives an instruction to stop operation from the remote control 33, it reads information related to the operation stop from the memory unit 36e and outputs an instruction to stop operation from the output unit 36h to the blower 19 and the like (step S1). For example, if heating operation, which is one of the operation types, was selected before the instruction to stop operation was issued, the control unit 36 ​​performs operations such as stopping the blower 19 and closing the valve of the second hot water flow path opening / closing unit 25.

[0086] Next, the timer 36f measures the time that has elapsed since the selection to stop operation was made. The control unit 36 ​​determines whether the time measured by the timer 36f has reached a first predetermined time TIME1 (e.g., 60 minutes) (step S2). If the first predetermined time TIME1 has not been reached, the control unit 36 ​​repeats step S2.

[0087] The first predetermined time TIME1 is preferably selected to be the time from when operation shutdown is selected until the air temperature TEMP1 and the heat receiving water passage temperature TEMP3 drop to room temperature and stabilize.

[0088] When the first predetermined time TIME1 is exceeded, the control unit 36 ​​uses the second state determination unit 36d to determine whether the second hot water flow path opening / closing unit 25 is in a normal state or an abnormal state based on the opening / closing information of the second hot water flow path opening / closing unit 25 and the hot water flow path temperature TEMP3.

[0089] First, the control unit 36 ​​determines whether the heat receiving water passage temperature TEMP3 exceeds the third predetermined temperature C (step S13).

[0090] When the heat receiving water passage temperature TEMP3 exceeds the third predetermined temperature C, the second state determination unit 36d determines whether the time during which the heat receiving water passage temperature TEMP3 exceeds the third predetermined temperature C exceeds the fourth predetermined time TIME4 (step S14).

[0091] If the time during which the hot water passage temperature TEMP3 exceeds the third predetermined temperature C exceeds the fifth predetermined time TIME5, the second state determination unit 36d determines that the second hot water passage opening / closing unit 25 is in an abnormal state. Then, the control unit 36 ​​instructs the notification unit 35 to start notifying of the abnormal state (step S15).

[0092] Even after the notification unit 35 starts notifying the abnormal state, the second state determination unit 36d determines whether the heat receiving water passage temperature TEMP3 exceeds the third predetermined temperature C (step S16). When the heat receiving water passage temperature TEMP3 becomes equal to or lower than the third predetermined temperature C, the control unit 36 ​​controls the notification unit 35 to stop notifying the abnormal state (step S17). After the notification of the abnormal state is stopped, the processing step by the control unit 36 ​​returns to step S13.

[0093] If the hot water flow path temperature TEMP3 does not exceed the third predetermined temperature C, the second state determination unit 36d determines whether the second temperature difference ΔT2 between the air temperature TEMP1 and the hot water flow path temperature TEMP3 exceeds a fourth predetermined temperature D (e.g., 10°C) (step S18).

[0094] If the second temperature difference ΔT2 exceeds the fourth predetermined temperature D, the second state determination unit 36d determines whether the time during which the second temperature difference ΔT2 exceeds the fourth predetermined temperature D exceeds a fifth predetermined time TIME5 (step S19). If the time during which the second temperature difference ΔT2 exceeds the fourth predetermined temperature D exceeds the fifth predetermined time TIME5, the second state determination unit 36d determines that the second hot water flow path opening / closing unit 25 is in an abnormal state. Then, the control unit 36 ​​controls the notification unit 35 to start notifying of the abnormal state (step S20).

[0095] Even after the notification unit 35 starts notifying of the abnormal state, the second state determination unit 36d determines whether the second temperature difference ΔT2 exceeds the fourth predetermined temperature D (step S21). If the second temperature difference ΔT2 does not exceed the fourth predetermined temperature D, the control unit 36 ​​determines that the second hot water flow path opening / closing unit 25 is in a normal state, and instructs the notification unit 35 to stop notifying of the abnormal state (step S22).

[0096] Control unit 36 ​​repeats the processes from step S13 to step S22 until it receives information about the start of operation of bathroom heater / dryer 1, such as heating operation or drying operation (step S23).

[0097] The above is the description of the flow of determining and notifying the abnormal state of the first hot water passage opening / closing unit 23 by the control unit 36.

[0098] That is, the first state determination unit 36c determines whether an abnormal state exists in two ways: by the hot water passage temperature TEMP2 measured by the hot water passage temperature measurement unit 24, and by the first temperature difference ΔT1 between the hot water passage temperature TEMP2 measured by the hot water passage temperature measurement unit 24 and the air temperature TEMP1 measured by the air temperature measurement unit 20. This is for the following reason.

[0099] First, the hot water flow path temperature TEMP2 varies depending on the opening degree of the first hot water flow path opening / closing unit 23. For example, when the opening degree of the first hot water flow path opening / closing unit 23 ranges from 0 to 100, if the hot water flow path temperature TEMP2 measured when the opening degree is 100 is 50°C, the hot water flow path temperature TEMP2 measured when the opening degree is 50 will be lower than 50°C, for example, 40°C. Here, if the first predetermined temperature A is set to 50°C, an abnormal state can be determined if the first hot water flow path opening / closing unit 23 malfunctions when the opening degree is 100, but if the first predetermined temperature A is set to 40°C, an abnormal state cannot be determined if the valve of the first hot water flow path opening / closing unit 23 malfunctions when the opening degree is 50, as in summer, when the temperature in the attic space may be higher than 40°C, even if the valve is normally closed. In other words, an accurate determination of an abnormal state cannot be made solely based on the hot water flow path temperature TEMP2. Therefore, a relative comparison is made between the air temperature TEMP1 and the hot water passage temperature TEMP2.

[0100] The air temperature measuring unit 20 and the hot water passage temperature measuring unit 24 are disposed in the inner peripheral space of the main body case 2. Therefore, when the first hot water passage opening / closing unit is properly closed, the hot water passage temperature TEMP2 and the air temperature TEMP1 will be approximately equal. In contrast, when the valve of the first hot water passage opening / closing unit 23 is not properly closed, meaning that hot water flows into the first hot water passage 21, the hot water passage temperature TEMP2 will be higher than the air temperature TEMP1. Even if the amount of hot water leakage is small, the hot water passage temperature TEMP2 will be higher than the air temperature TEMP1. Therefore, if there is a temperature difference between the air temperature TEMP1 and the hot water passage temperature TEMP2, it can be determined that the first hot water passage opening / closing unit 23 is in an abnormal state.

[0101] In this way, by placing the air temperature measuring unit 20 and the hot water flow path temperature measuring unit 24 in an equivalent temperature environment and comparing the temperatures measured by each temperature measuring unit, it is possible to determine whether the first hot water flow path opening / closing unit 23 is in a normal or abnormal state regardless of the amount of hot water leakage or the environmental temperature.

[0102] The method of determining an abnormal state by the second state determination unit 36d is similar to that by the first state determination unit 36c.

[0103] The first state determination unit 36c also uses time determinations of a second predetermined time TIME2 and a third predetermined time TIME3 to determine whether the first hot water flow path opening / closing unit 23 is in an abnormal state. This is expected to have the effect of suppressing erroneous determinations caused by variations in the temperatures measured by the air temperature measurement unit 20 and the hot water flow path temperature measurement unit 24. Similarly, the second state determination unit 36d also uses time determinations of a fourth predetermined time TIME4 and a fifth predetermined time TIME5 to determine whether the second hot water flow path opening / closing unit 25 is in an abnormal state.

[0104] In addition, by notifying the user of an abnormal state of at least one of the first hot water flow path opening / closing unit 23 and the second hot water flow path opening / closing unit 25 by the alarm unit 35 provided in the remote control 33, it is possible to accurately communicate this to the user visually and audibly.

[0105] Furthermore, if the abnormality notification continues even after the abnormality has been resolved, it can be unpleasant for the user. Therefore, when the first state determination unit 36c determines whether the first hot water flow path opening / closing unit 23 is in an abnormal state using the hot water flow path temperature TEMP2, if the temperature is equal to or lower than a first predetermined temperature A, the first hot water flow path opening / closing unit 23 is determined to be in a normal state and the notification of the abnormality is stopped. When the first temperature difference ΔT1 is used to determine whether the first hot water flow path opening / closing unit 23 is in an abnormal state, if the temperature is equal to or lower than a second predetermined temperature B, the first hot water flow path opening / closing unit 23 is determined to be in a normal state, and the control unit 36 ​​stops the notification of the abnormality. Similarly, when the second state determination unit 36d determines that the second hot water flow path opening / closing unit 25 is in a normal state, the control unit 36 ​​stops the notification of the abnormality. This eliminates the need to provide the remote control 33 with a reset button or the like for stopping the notification of the abnormality, thereby reducing the space required for the remote control 33. This can also be expected to reduce the burden on the user of having to perform a reset operation.

[0106] The hot water flow path temperature measuring unit 24 may be disposed on the inner circumferential surface side of the pipe that constitutes the first hot water flow path 21 in order to directly measure the temperature of the hot water passing through the first hot water flow path 21 .

[0107] The heat receiving water flow path temperature measuring unit 27 may be disposed on the inner circumferential surface side of the pipe constituting the heat receiving water flow path 26 in order to directly measure the temperature of the tap water that has received heat.

[0108] As shown in FIG. 1, the heat source machine is not included in the bathroom heater / dryer 1.

[0109] The bathroom heater / dryer according to the present invention has been described above based on the embodiment, but the present invention is not limited to the embodiment. As long as it does not deviate from the spirit of the present invention, various modifications that would occur to those skilled in the art to this embodiment are also included within the scope of the present invention. [Industrial Applicability]

[0110] The present invention can be used as a bathroom air conditioner such as a bathroom heater / dryer that is installed on the ceiling of a bathroom or the like and controls the temperature and humidity of the bathroom by using the heat of hot water supplied from a heat source unit. [Explanation of symbols]

[0111] 1 Bathroom heater / dryer 2 Main unit case 2a One side 2b Other side 6 Heat exchanger 7 Water inlet 8 Humidification channel 9 Water heat exchanger 10 Humidification unit 13 Intake port 13a First intake port 13b Second intake port 14 Air outlet 17 Circulation air duct 18 Temperature measurement air path 18a Wall 19 Blower 20 Air temperature measurement unit 21 First hot water flow path 22 Second hot water flow path 23 First hot water flow path opening and closing section 24 Hot water flow path temperature measurement section 25 Second hot water flow path opening / closing part 26 Heat receiving water flow path 27 Heat receiving water flow path temperature measurement section 33 Remote Control 34 Physical Buttons 35 Information Department 36 Control Unit 36a Input section 36b Processing section 36c First state determination unit 36d Second state determination unit 36e Storage section 36f Timekeeping section 36h output section 37 Fans 38 Hot water flow path inside heat exchanger 38a Inlet 38b Outlet TEMP1 Air temperature TEMP2 warm water flow path temperature TEMP3 heated water flow path temperature ΔT1 first temperature difference ΔT2 Second temperature difference TIME1 First scheduled time TIME2 Second scheduled time TIME3 The third scheduled time TIME4 The fourth scheduled time TIME5 The fifth scheduled time A The first set temperature B The second set temperature C The third set temperature D The fourth set temperature

Claims

1. a main body case having an inlet and an outlet; a heat exchanger that exchanges heat between the passing air and the hot water; a first hot water flow path through which the hot water flows and which includes the heat exchanger midway through the flow path; a first hot water flow path opening / closing unit that opens and closes the first hot water flow path; a hot water flow passage temperature measuring unit for measuring a temperature in the vicinity of the first hot water flow passage; an air temperature measuring unit that measures the temperature of the air drawn into the main body case through the air inlet; a first state determination unit that determines whether the first hot water flow path opening / closing unit is in a normal state or an abnormal state based on a first temperature difference between the hot water flow path temperature measured by the hot water flow path temperature measurement unit and the air temperature measured by the air temperature measurement unit and first hot water flow path opening / closing information of the first hot water flow path opening / closing unit, The suction port has a first suction port and a second suction port, the main body case includes a circulation air passage and a temperature measurement air passage; the circulation air passage is an air passage that sequentially connects the first air inlet, the heat exchanger, and the air outlet, the temperature measurement air passage is an air passage that communicates with the second air inlet and the circulation air passage, The bathroom air-conditioner is characterized in that the air temperature measuring unit is provided in the temperature measurement air duct.

2. 2. The bathroom air-conditioner according to claim 1, wherein the main body case has a wall between the circulation air passage and the temperature measurement air passage.

3. 3. The bathroom air-conditioner according to claim 2, wherein the wall is made of a heat-insulating material.

4. 4. The bathroom air-conditioner of claim 1, wherein the temperature measurement air duct has an opening area on the windward side that is smaller than an opening area on the windward side of the circulation air duct.

5. 5. The bathroom air-conditioner of claim 1, wherein a part or all of the air blown out of the temperature measurement air duct passes through the heat exchanger.

6. 6. The bathroom air-conditioner of claim 1, wherein the main body case is generally box-shaped with an open bottom, the first hot water flow path is provided between one side of the main body case and the heat exchanger, and the temperature measurement air path is provided between the other side of the main body case and the heat exchanger.

7. The circulation air duct is Air passes through the heat exchanger from below to above the main body case, The heat exchanger includes a hot water flow path in the heat exchanger through which hot water passes, The hot water flow path in the heat exchanger is an inlet portion where hot water flows from the first hot water flow path into the heat exchanger; an outflow portion where hot water flows out from the heat exchanger to the first hot water flow path, The main body case is extended while being curved so as to have a plurality of stages arranged in the vertical direction, The inlet portion is provided at the uppermost position in the heat exchanger hot water flow path, 7. The bathroom air-conditioner of claim 1, wherein the outlet portion is provided at a lowermost position in the heat exchanger hot water flow path.

8. 8. The bathroom air-conditioner of claim 7, wherein the air temperature measuring unit is provided below the main body case in the temperature measurement air passage.

9. The first state determination unit 9. The bathroom air-conditioner of claim 1, wherein the first hot water flow path opening / closing unit is determined to be in an abnormal state when the first hot water flow path opening / closing information indicates a closed state and the first temperature difference is greater than a first predetermined value.

10. The first state determination unit 10. The bathroom air-conditioner of claim 9, wherein the first hot water flow path opening / closing unit is determined to be in the abnormal state when the time during which the first temperature difference is greater than the predetermined value exceeds a first predetermined time.

11. The first state determination unit 10. The bathroom air-conditioner of claim 9, wherein the first hot water flow path opening / closing unit is determined to be in a normal state when the first temperature difference is equal to or smaller than the first predetermined value.

12. a first notification unit that notifies the abnormal state of the first hot water flow path opening / closing unit; The first state determination unit 12. The bathroom air-conditioner of claim 9, wherein the first notification unit starts issuing a notification when it is determined that the first hot water flow path opening / closing unit is in the abnormal state.

13. The first state determination unit 13. The bathroom air-conditioner of claim 12, wherein the first notification unit stops issuing a notification when it is determined that the first hot water flow path opening / closing unit is in the normal state.

14. a main body case having an inlet and an outlet; a water heat exchanger that exchanges heat between the passing water and hot water; a heat exchanger that exchanges heat between the passing air and the hot water; a second hot water flow path that supplies the hot water from the outside to the water heat exchanger and returns the hot water to the outside; a second hot water flow path opening / closing unit that opens and closes the second hot water flow path; a heat-receiving water flow path temperature measuring unit for measuring a temperature in the vicinity of a flow path through which the water that has passed through the water heat exchanger and received heat passes; an air temperature measuring unit that measures the temperature of the air drawn into the main body case through the air inlet; a second state determination unit that determines whether the second hot water flow path opening / closing unit is in a normal state or an abnormal state based on a second temperature difference between the air temperature measured by the air temperature measurement unit and the water temperature measured by the hot water flow path temperature measurement unit and second hot water flow path opening / closing information of the second hot water flow path opening / closing unit, The suction port has a first suction port and a second suction port, the main body case includes a circulation air passage and a temperature measurement air passage; the circulation air passage is an air passage that sequentially connects the first air inlet, the heat exchanger, and the air outlet, the temperature measurement air passage is an air passage that communicates with the second air inlet and the circulation air passage, The bathroom air-conditioner is characterized in that the air temperature measuring unit is provided in the temperature measurement air duct.

15. 15. The bathroom air-conditioner according to claim 14, wherein the main body case has a wall between the circulation air passage and the temperature measurement air passage.

16. 16. The bathroom air-conditioner according to claim 15, wherein the wall is made of a heat-insulating material.

17. 17. The bathroom air-conditioner of claim 14, wherein the temperature measurement air duct has an opening on its windward side that is smaller in area than the opening of the circulation air duct.

18. 18. The bathroom air-conditioner of claim 14, wherein a part or all of the air blown out of the temperature measurement air duct passes through the heat exchanger.

19. 19. The bathroom air-conditioner of claim 14, wherein the main body case is generally box-shaped with an open bottom, the second hot water flow path is provided between one side of the main body case and the heat exchanger, and the temperature measurement air path is provided between the other side of the main body case and the heat exchanger.

20. The second state determination unit 20. The bathroom air-conditioner of claim 14, wherein the second hot water flow path opening / closing unit is determined to be in an abnormal state when the second hot water flow path opening / closing information indicates a closed state and the second temperature difference is greater than a second predetermined value.

21. The second state determination unit 21. The bathroom air-conditioner of claim 20, wherein the second hot water flow path opening / closing unit is determined to be in the abnormal state when the time during which the second temperature difference is greater than the predetermined value exceeds a second predetermined time.

22. The second state determination unit 21. The bathroom air-conditioner of claim 20, wherein the second hot water flow path opening / closing unit is determined to be normal when the second temperature difference is equal to or smaller than the second predetermined value.

23. a second notification unit that notifies the abnormal state of the second hot water flow path opening / closing unit; The second state determination unit 23. The bathroom air-conditioner of claim 20, wherein the second notification unit starts issuing a notification when it is determined that the second hot water flow path opening / closing unit is in the abnormal state.

24. The second state determination unit 24. The bathroom air-conditioner of claim 23, wherein the second notification unit stops issuing a notification when it is determined that the second hot water flow path opening / closing unit is in the normal state.

25. a main body case having an inlet and an outlet; a heat exchanger that exchanges heat between the passing air and the hot water; a water heat exchanger that exchanges heat between the passing water and the hot water; a first hot water flow path through which the hot water flows and which includes the heat exchanger midway through the flow path; a second hot water flow path that supplies the hot water from the outside to the water heat exchanger and returns the hot water to the outside; a first hot water flow path opening / closing unit that opens and closes the first hot water flow path; a second hot water flow path opening / closing unit that opens and closes the second hot water flow path; a hot water flow passage temperature measuring unit for measuring a temperature in the vicinity of the first hot water flow passage; a heat-receiving water flow path temperature measuring unit for measuring a temperature in the vicinity of a flow path through which the water that has passed through the water heat exchanger and received heat passes; an air temperature measuring unit that measures the temperature of the air drawn into the main body case through the air inlet; a first state determination unit that determines whether the first hot water flow path opening / closing unit is in a normal state or an abnormal state based on a first temperature difference between the hot water flow path temperature measured by the hot water flow path temperature measurement unit and the air temperature measured by the air temperature measurement unit and first hot water flow path opening / closing information of the first hot water flow path opening / closing unit; a second state determination unit that determines whether the second hot water flow path opening / closing unit is in a normal state or an abnormal state based on a second temperature difference between the air temperature measured by the air temperature measurement unit and the water temperature measured by the hot water flow path temperature measurement unit and second hot water flow path opening / closing information of the second hot water flow path opening / closing unit, The suction port has a first suction port and a second suction port, the main body case includes a circulation air passage and a temperature measurement air passage; the circulation air passage is an air passage that sequentially connects the first air inlet, the heat exchanger, and the air outlet, the temperature measurement air passage is an air passage that communicates with the second air inlet and the circulation air passage, The bathroom air-conditioner is characterized in that the air temperature measuring unit is provided in the temperature measurement air duct.

26. 26. The bathroom air-conditioner of claim 25, wherein the main body case has a wall between the circulation air duct and the temperature measurement air duct.

27. 27. The bathroom air-conditioner of claim 26, wherein the wall is made of a heat-insulating material.

28. 28. The bathroom air-conditioner of claim 25, wherein the temperature-measurement air duct has an opening on its windward side that is smaller in area than the opening of the circulation air duct.

29. 29. The bathroom air-conditioner of claim 25, wherein a part or all of the air blown out of the temperature measurement air duct passes through the heat exchanger.

30. 30. The bathroom air-conditioner of claim 25, wherein the main body case is generally box-shaped with an open bottom, the first hot water flow path is provided between one side of the main body case and the heat exchanger, and the temperature measurement air path is provided between the other side of the main body case and the heat exchanger.

31. The circulation air duct is Air passes through the heat exchanger from below to above the main body case, The heat exchanger includes a hot water flow path in the heat exchanger through which hot water passes, The hot water flow path in the heat exchanger is an inlet portion where hot water flows from the first hot water flow path into the heat exchanger; an outflow portion where hot water flows out from the heat exchanger to the first hot water flow path, The main body case is extended while being curved so as to have a plurality of stages arranged in the vertical direction, The inlet portion is provided at the uppermost position in the heat exchanger hot water flow path, 31. The bathroom air-conditioner of claim 25, wherein the outlet is located at a lowermost position in the heat exchanger hot water flow path.

32. 32. The bathroom air-conditioner of claim 31, wherein the air temperature measuring unit is provided below the main body case in the temperature measurement air passage.

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