JP2005030707A - Hot water supply type heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water supply type heater that automatically executes a sticking preventing operation for preventing a stagnant circulating fluid from sticking movable parts in a secondary circulating fluid circuit if heating has not been used for a long period. <P>SOLUTION: A warm water controller 22 actuates a second feed pump 42 for a given operation if a heating operation using a floor heater 50 and a bathroom heater/dryer 60 has not been executed for a first given time D1. This means that, if a heating operation has been executed within, for example, past twenty-four hours as the first given time T1, the given operation as a stick preventing operation is not executed, but if a heating operation has not been executed for a day, the second feed pump as second feeding means 42 is actuated, for example, for some two minutes as the given operation providing a stick preventing operation. Even if heating has not been used for a long period, the hot water supply type heater can automatically execute a stick preventing operation for preventing a stagnant circulating fluid from sticking movable parts in the secondary circulating fluid circuit. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hot water supply type heating apparatus that performs heating (for example, floor heating, bathroom heating drying, etc.) using a high-temperature fluid as a heat source, and particularly stays in a secondary fluid circuit when heating is not performed for a long period of time. The present invention relates to a fluid that prevents the circulating fluid from sticking in a movable part such as a pump or a valve.

In conventional gas / oil water heaters with heating function as shown in Patent Documents 1 to 5, when heating is not used for a long period of time, it is fresh to the heat exchanger for heating by external input means or every time the bath is filled There are some which prevent the decay of water staying in a heat exchanger for heating and a hot water circulation circuit by supplying and replacing fresh water.
JP 2002-5462 A JP 2002-5463 A JP 2002-39554 A JP 2002-188819 A JP 2002-188856 A

  However, if the floor heating is not used for a long period of time, the circulating fluid such as antifreeze used as the circulating fluid in the secondary circulating fluid circuit will stay and stick in the moving parts such as pumps and valves, causing malfunction. May cause. The present invention has been made in view of the above-described conventional problems, and its object is to automatically prevent moving parts in the secondary circulating fluid circuit from being stuck by circulating fluid when heating is not used for a long period of time. Another object of the present invention is to provide a hot water supply type heating device that performs a sticking prevention operation.

In order to achieve the above object, the present invention employs technical means described in claims 1 to 3. That is, in the first aspect of the invention, the heat exchanging means (31) for circulating the high-temperature fluid to the primary side to heat the circulating fluid on the secondary side and the high-temperature fluid to the heat exchanging means (31) are provided. Primary high-temperature fluid circuit (30) provided with one water supply means (32), heat exchange means (31), heater using circulating fluid (50, 60), circulating fluid as heater (50, 60) The circulation of the secondary circulating fluid circuit (40), the primary high-temperature fluid circuit (30), and the secondary circulating fluid circuit (40) connected to the second water supply means (42) in a ring shape is controlled. In the hot water supply type heating device comprising the heat exchange control means (22),
The heat exchange control means (22) operates the second water supply means (42) for a predetermined operation when the heating operation using the heater (50, 60) has not been performed for the first predetermined time (T1) or longer. It is said.

  According to the first aspect of the present invention, if the heating operation is performed within 24 hours as the first predetermined time (T1), for example, the predetermined operation as the sticking prevention operation is not performed, but the heating operation is not performed. When the operation is not performed for one day, the second water supply pump as the second water supply means (42) is operated as a predetermined operation, for example, for about 2 minutes as the sticking prevention operation. Thus, even when heating is not used for a long period of time, a hot water supply type heating apparatus that automatically performs an anti-adhesion operation so that the movable parts in the secondary side circulating fluid circuit do not adhere due to the accumulated circulating fluid is provided. it can.

In the second aspect of the present invention, the heat exchanging means (31) for circulating the high-temperature fluid to the primary side and heating the circulating fluid on the secondary side, Primary high-temperature fluid circuit (30) provided with one water supply means (32), heat exchange means (31), heater using circulating fluid (50, 60), circulating fluid as heater (50, 60) A secondary circulating fluid circuit (40) in which a second water supply means (42) for supplying to the heater and a valve means (45, 53, 63) for adjusting the circulating fluid to be supplied to the heater (50, 60) are connected in an annular shape. In a hot water supply type heating device comprising a heat exchange control means (22) for controlling the flow of the primary high-temperature fluid circuit (30) and the secondary circulation fluid circuit (40),
The heat exchange control means (22) causes the valve means (45, 53, 63) to operate in a predetermined manner when the heating operation using the heater (50, 60) has not been performed for the first predetermined time (T1) or longer. It is characterized by.

  According to the second aspect of the present invention, if the heating operation is performed within 24 hours as the first predetermined time (T1), for example, the predetermined operation as the sticking prevention operation is not performed, but the heating operation is not performed. If not performed for one day, the mixing means, the thermal valve, etc., which are the valve means (45, 53, 63), are moved as a predetermined operation, for example, from one end to the other end of the movable range. Is. Thus, even when heating is not used for a long period of time, a hot water supply type heating apparatus that automatically performs an anti-adhesion operation so that the movable parts in the secondary side circulating fluid circuit do not adhere due to the accumulated circulating fluid is provided. it can.

  Further, the invention according to claim 3 is characterized in that the first predetermined time (T1) is varied by the operation integrated time (ΣT) of the second water supply means (42). According to the third aspect of the present invention, the degree of deterioration of the circulating fluid is estimated from the accumulated operation time (ΣT) of the second water supply pump that is the second water supply means (42), and the frequency of performing the sticking prevention operation is estimated. Is variable.

  For example, the sticking prevention operation is performed in the simplest manner, with 5 years in the accumulated operation time (ΣT) as a threshold value, and when the accumulated operation time (ΣT) is less than 5 years, the degree of deterioration of the circulating fluid is mild. The first predetermined time to be determined is changed to (T1 ′), for example, 7 days, and if the accumulated operation time (ΣT) is 5 years or more, the degree of deterioration of the circulating fluid is regarded as severe, and the sticking prevention operation is performed. The first predetermined time (T1) for determining the implementation is set to 24 hours as described above, for example. Thereby, the implementation frequency of the sticking prevention operation can be reduced, and the implementation frequency can be set to an appropriate implementation frequency that matches the degree of deterioration of the circulating fluid.

 In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Drawing 1 is a mimetic diagram showing the whole multi-function hot-water supply unit composition concerning an embodiment of the present invention. As shown in the figure, the multi-function hot water supply apparatus of the present embodiment includes a hot water storage type hot water supply apparatus 10, a hot water supply type heating apparatus 20, a floor heating unit 50 that is a heater, a bathroom heating dryer 60, and the like.

  The hot water storage type hot water supply apparatus 10 includes a heat pump type hot water supply apparatus 11 that is a heat source device including a heat pump cycle, a hot water storage tank (hot water tank) 12 that stores hot water heated by the heat pump type hot water supply apparatus 11, and hot water supply. It consists of a hot water supply pipe 13 for leading to a target location, a hot water supply control device 100 for controlling these, and the like. The heat pump hot water supply device 11 is provided before and after the hot water supply device 11 for sucking in the lowermost water in the hot water storage tank 12, and for discharging heated hot water to the uppermost portion in the hot water storage tank 12. This is a part of a circulation circuit composed of the discharge pipe 14 a and the hot water storage tank 12.

The heat pump hot water supply device 11 uses carbon dioxide (hereinafter referred to as CO ₂ ) as a refrigerant in the present embodiment, and is composed of refrigeration cycle functional parts such as a compressor and a heat exchanger (not shown). Water in the hot water storage tank 12 can be boiled by heating the water sucked from the lowermost part by heat exchange with the high-temperature CO ₂ refrigerant and returning it to the uppermost part in the hot water storage tank 12. Incidentally, by adopting the CO ₂ to the refrigerant, it is possible to increase the refrigerant discharge temperature from the compressor (not shown) by using a supercritical region. Therefore, hot water (for example, about 80 to 90 ° C.) that is hotter than the case where a chlorofluorocarbon refrigerant or the like is used can be efficiently boiled.

  In addition, the heat pump hot water supply device 11 performs a heat storage operation in which water in the hot water storage tank 12 is boiled using an AC power source (so-called late-night power) mainly in the late-night time period when the electricity rate is low. However, when the hot water stored in the hot water storage tank 12 falls below a predetermined amount, the boiling operation is controlled. The heat pump type hot water supply device 11 is connected to operate according to a control signal from the hot water supply control device 100 and to output an operating state to the hot water supply control device 100.

  Next, the hot water storage tank 12 is a metal (for example, stainless steel) container excellent in corrosion resistance, and a heat insulating material (not shown) is arranged on the outer peripheral portion, and keeps hot hot water for a long time. Can be done. The hot water storage tank 12 has a vertically long shape, and an introduction port 12b is provided on the bottom surface thereof, and a water supply pipe 15 that is a water supply path for introducing tap water is connected to the lower portion of the hot water storage tank 12 at the introduction port 12b. .

  The water supply pipe 15 is provided with a water supply thermistor (not shown) that detects the temperature of tap water flowing in the water supply pipe 15, and outputs detected temperature information to the hot water supply control device 100. The water supply pipe 15 is provided with a pressure reducing valve (not shown) that adjusts the water pressure of the introduced tap water to a predetermined pressure.

  Further, the downstream end of the water supply pipe 15 is connected to one inlet side of a mixing valve 16 to be described later in addition to the introduction port 12b, and is configured to introduce tap water into the hot water storage tank 12 and the mixing valve 16. Has been. On the other hand, a lead-out port 12a is provided at the uppermost part of the hot water storage tank 12, and a hot water supply pipe 13 which is a hot water supply path for leading out hot water in the hot water storage tank 12 is connected to the lead-out port 12a.

  The hot water supply pipe 13 is provided with a mixing valve 16 for adjusting the temperature to a set temperature set by the user. The mixing valve 16 adjusts the opening area ratio when a hot-water tap (not shown) provided at the downstream end of the hot-water supply pipe 13 is opened, so that the hot water derived from the outlet 12a and the water-supply pipe are adjusted. 15 is a temperature control valve that can adjust the mixing ratio with tap water introduced from No. 15.

  The mixing valve 16 is an electric valve that adjusts the opening degree by driving a valve body by a drive source such as a servomotor, and is operated by a control signal from the hot water supply control device 100 and the operation state is changed to a hot water supply control device. 100 is output. Further, a hot water supply thermistor (not shown) for detecting the hot water temperature and a flow rate counter (not shown) as hot water detection means are provided downstream of the mixing valve 16 so as to output the detected temperature information and flow rate information to the hot water controller 100. It has become.

  The downstream end of the hot water supply pipe 13 leads to a hot water tap (not shown) disposed in the kitchen, washroom, bath, etc. When the hot water tap is opened, hot water whose temperature is adjusted to the set temperature is discharged. Is. In addition, a plurality of water level thermistors (not shown) are arranged on the outer wall surface of the hot water storage tank 12 at substantially equal intervals in the vertical direction (the height direction of the hot water storage tank 12). Is output to the hot water supply control device 100.

  Accordingly, the hot water supply control device 100 can detect the boundary position between the hot water heated in the upper part of the hot water storage tank 12 and the water before being heated in the lower part of the hot water storage tank 12 based on the temperature information from the water level thermistor. It has become. One of the water level thermistors is provided on the uppermost outer wall surface in the hot water storage tank 12, and the hot water sucked into the outlet 12a or the primary hot water circuit (primary hot fluid circuit) 30 described later. It also has the function of a hot water thermistor that detects the hot water temperature at the top of the hot water storage tank 12 that is the temperature.

  The hot water supply control device 100 includes temperature information from each thermistor provided in the heat pump type hot water supply device 11 and the water supply pipe 15, the hot water storage tank 12, and the hot water supply pipe 13, flow rate information from the flow counter, and operation of the hot water supply type heating device 20 described later. Based on the signal and the operation signal from the operation panel 101, the heat pump type hot water supply apparatus 11 and the mixing valve 16 are controlled. The operation panel 101 is installed in the vicinity of a place where hot water is used, such as in a bathroom or kitchen, and other than the operation panel 101 is disposed in a suitable place such as outdoors.

  Next, the structure of the hot water supply type heating device 20 according to the main part of the present invention will be described. The primary-side hot water circuit 30 is a circulation circuit that supplies warming fluid to a floor heating unit 50 as a heater and a bathroom heater / dryer 60, which will be described later, using hot water stored in the hot water storage tank 12. is there.

  The primary-side hot water circuit 30 circulates hot water in the hot water storage tank 12 from the outlet 12 a to the primary side of the heating heat exchanger 31 that is heat exchange means and the heating heat exchanger 31, and The circulating water passage 33 is arranged so as to return downward, and the first water pump 32 that is the first water feeding means provided in the circulating water passage 33 and the like.

  The heating heat exchanger 31 is a counter-flow type water-water heat exchanger, and hot water (hot fluid) in the hot water storage tank 12 flowing in the circulating water passage 33 and a secondary fluid circuit (described later) The secondary side fluid (circulation fluid) circulating in the secondary side circulation fluid circuit) 40 is configured to exchange heat. The first water pump 32 is a water pump for circulating hot water in the hot water storage tank 12 in the circulating water passage 33, and an electric part (not shown) is formed by a DC brushless motor, and the number of rotations is switched to a plurality of stages. It is a possible pump, and is controlled so that the rotation speed is variable by feedback control (PID control) by a hot water control device (heat exchange control means) 22 described later.

  Moreover, the water temperature thermistor 34 which is a water temperature detection means is a sensor which is provided in the downstream of the heat exchanger 31 for heating, and detects the water temperature which returns to the downward direction of the hot water storage tank 12 after heat exchange, Comprising: Detected temperature information Is output to the hot water control device 22.

  The secondary fluid circuit 40 is a fluid circuit that distributes the amount of heat of the secondary fluid received from the heating heat exchanger 31 to the floor heating unit 50 and the bathroom heating dryer 60 that are the heaters, and the like. The heated heat exchanger 31, the supply water channel 43 that supplies the secondary fluid heat-exchanged by the heating heat exchanger 31 to the heaters 50 and 60, and the return water from the heaters 50 and 60 is heated. The return water channel 46 returns to the heat exchanger 31 and the second water supply pump 42 that is the second water supply means provided in the return water channel 46.

  The second water supply pump 42 is a water supply pump for supplying the secondary fluid from the heating heat exchanger 31 to the heaters 50 and 60, and is controlled by the hot water controller 22. Reference numeral 44 denotes a bypass passage that bypasses the heaters 50 and 60 and short-circuits both passages 43 and 46. Further, a water temperature thermistor 41 is provided as a high temperature side water temperature detecting means in the vicinity of the outlet of the heating heat exchanger 31, and temperature information of the secondary fluid flowing out from the heating heat exchanger 31 is sent to the hot water control device 22. It is designed to output.

  Next, as an example of the heater, a floor heating unit 50 and a bathroom heater / dryer 60 will be described. First, the floor heating unit 50 is a heater that warms the floor by circulating the secondary fluid through the pipe 51a in the warm floor panel 51, and has a temperature supplied from the supply water channel 43 to the inlet side of the secondary fluid. There is a mixing valve (valve means) 45 that mixes the high secondary fluid and the low temperature secondary fluid supplied from the return water channel 46 to adjust to an intermediate temperature.

  Besides, the floor warming panel 51, the floor warming temperature sensor 52 which is a heating temperature detecting means provided on the floor warming panel 51 for detecting the heating temperature, and the temperature adjusting means for opening and closing the circulation of the secondary fluid flowing through the pipe 51a. It is composed of a thermal valve (valve means) 53, a floor warming control device 23 as temperature control means, and the like.

  The thermal valve 53 that is a temperature adjusting means is an on-off valve that adjusts the heating output of the floor warming panel 51, and is detected by a set temperature set by the user and a floor warming temperature sensor 52 that is a heating temperature detecting means. It is controlled by a closing / closing signal from the floor warming control device 23 based on the temperature information of the heating temperature.

  The floor warming control device 23 as temperature control means has a control program for controlling the opening and closing of the thermal valve 53 by inputting an operation signal from the floor warming operation panel 24 and temperature information from the floor warming temperature sensor 52. Of the operation signals from the floor warming operation panel 24, an operation signal is output to the hot water control device 22. The floor heating unit 50 is installed, for example, on the floor of a washroom or a changing room and is used for heating purposes.

  Next, the bathroom heating dryer 60 will be described. The bathroom heater / dryer 60 is a heater that is disposed in the supply water channel 43 of the secondary side fluid circuit 40 to heat the inside of the bathroom, the changing room, and the like, and to dry the inside of the bathroom. Therefore, warm air is blown into the bathroom or a changing room to perform heating (drying). The radiator 61a, the blower 61b, the room temperature sensor 62 as a heating temperature detecting means for detecting the heating temperature, and the heating of the radiator 61a. It comprises a thermal valve (valve means) 63 as temperature adjusting means for adjusting the output, and a bathroom heating control device 25 as temperature control means.

  The thermal valve 63 is specifically an on-off valve, and a close / close signal from the bathroom heating control device 25 based on the temperature information of the set temperature set by the user and the heating temperature detected by the room temperature sensor 62. Controlled by In addition, the bathroom heating control device 25 has a control program for controlling the opening and closing of the thermal valve 63 by inputting the operation signal from the operation panel 26 and the temperature information from the room temperature sensor 62, and the operation signal from the operation panel 26. An operation signal is output to the hot water control device 22.

  The hot water control device 22 is a control device that controls the hot water in the hot water storage tank 12 supplied to the primary side hot water circuit 30 and the secondary side fluid that circulates in the secondary side fluid circuit 40. 25 to control the first water pump 32 and the second water pump 42 based on the operation signal of the heaters 50 and 60, the water level thermistor at the top of the hot water storage tank 12, and the temperature information from the water temperature thermistors 34 and 41. Has been.

  Next, the operation of the present invention will be described with reference to FIG. FIG. 2 is a flowchart showing a control outline of the sticking prevention control in the first embodiment of the present invention. First, in step S11, it is determined whether or not there is a heating record for the first predetermined time T1 or more. For example, if the first predetermined time T1 is 24 hours and the determination result is YES, that is, if there is no heating record for more than a day, the process proceeds to step S12, and the second water pump 42 is set to, for example, 2 minutes as the predetermined operation of the sticking prevention operation The mixing valve 45 and the thermal valves 53 and 63 are moved from one end to the other end of the movable range.

  It should be noted that the operation of the pump and the operation of the valve in this sticking prevention operation may be performed simultaneously or sequentially, whichever comes first. If the determination result in step S11 is NO, that is, if heating is performed within one day, step S12 is skipped and this flowchart is repeated.

  Next, features in the present embodiment will be described. First, when the heating operation using the heaters 50 and 60 is not performed for the first predetermined time T1 or longer, the hot water control device 22 operates the second water supply means 42 for a predetermined operation. For example, if the first predetermined time T1 is set to 24 hours, for example, if there is a record of performing the heating operation during the day, the predetermined operation as the sticking prevention operation is not performed, but the heating operation is performed during the day. If not, the second water supply pump 42, which is the second water supply means, is operated as a predetermined operation, for example, for about 2 minutes as the sticking prevention operation.

  Moreover, the warm water control apparatus 22 is operating the valve means 45 * 53 * 63 predetermined | prescribed operation | movement, when heating operation using the heater 50 * 60 is not performed more than 1st predetermined time T1. For example, if the first predetermined time T1 is set to 24 hours, for example, if there is a record of performing the heating operation during the day, the predetermined operation as the sticking prevention operation is not performed, but the heating operation is performed during the day. If not, the mixing valve 45 and the thermal valves 53 and 63, which are valve means, are moved as a predetermined operation, for example, from one end to the other end of the movable range.

  Thus, even when heating is not used for a long period of time, a hot water supply type heating apparatus that automatically performs an anti-adhesion operation so that the movable parts in the secondary side circulating fluid circuit do not adhere due to the accumulated circulating fluid is provided. it can.

(Second Embodiment)
FIG. 3 is a flowchart showing an outline of the control of the sticking prevention control in the second embodiment of the present invention. The first embodiment is different from the first embodiment described above in accordance with the accumulated operation time ΣT of the second water pump 42. The difference is that the time T1 is varied. As an operation of the present invention, first, in step S21, it is determined whether or not the operation integration time ΣT of the second water pump 42 is equal to or longer than a second predetermined time T2.

  If the determination result is YES, that is, if the second predetermined time T2 is, for example, 5 years, the process proceeds to step S22 if it is 5 years or more. In step S22, as in step S11 of the first embodiment, it is determined whether or not there is no more heating record with the predetermined time for determining the implementation of the sticking prevention operation being the first predetermined time T1.

  For example, if the first predetermined time T1 is 24 hours and the determination result is YES, that is, if there is no heating record for more than a day, the process proceeds to step S24, and the second water pump 42 is set to, for example, 2 minutes as the predetermined operation of the sticking prevention operation. The mixing valve 45 and the thermal valves 53 and 63 are moved from one end to the other end of the movable range. If the determination result in step S22 is NO, that is, if heating is performed within one day, step S24 is jumped to repeat this flowchart.

  If the determination result in the previous step S21 is NO, that is, if the second predetermined time T2 is 5 years, for example, 5 years or less, the process proceeds to step S23. In step S23, the first predetermined time for determining the execution of the sticking prevention operation is varied to T1 ′, and it is determined whether or not there is no more heating results.

  For example, if the first predetermined time T1 ′ is 7 days and the determination result is YES, that is, if there is no heating record for one week or more, the process proceeds to step S24, and the second water pump 42 is set to, for example, 2 as the predetermined operation of the sticking prevention operation. The mixing valve 45 and the thermal valves 53 and 63 are moved from one end of the movable range to the other end while being operated for about a minute. If the determination result in step S23 is NO, that is, if heating is performed within one week, step S24 is skipped and this flowchart is repeated. The first predetermined time T1 may have a correspondence relationship that gradually decreases as the operation integration time ΣT of the second water pump 42 increases.

  Next, features in the present embodiment will be described. In the present embodiment, the first predetermined time T1 is varied depending on the operation integration time ΣT of the second water pump 42. This estimates the degree of deterioration of the circulating fluid from the accumulated operation time ΣT of the second water supply pump 42 as the second water supply means, and varies the frequency of performing the sticking prevention operation.

  For example, in the simplest case, the five-year time in the operation integrated time ΣT is set as a threshold, and if the operation integrated time ΣT is less than five years, the degree of deterioration of the circulating fluid is assumed to be slight, and the first predetermined determination for determining the implementation of the anti-sticking operation. The time is changed to T1 ′, for example, 7 days, and if the accumulated operation time ΣT is 5 years or more, the deterioration degree of the circulating fluid is considered severe, and the first predetermined time for determining the implementation of the sticking prevention operation is set to T1. For example, as described above, the operation is performed for 24 hours. Thereby, the implementation frequency of the sticking prevention operation can be reduced, and the implementation frequency can be set to an appropriate implementation frequency that matches the degree of deterioration of the circulating fluid.

(Other embodiments)
In the above embodiment, the supply heat source from the hot water storage type hot water supply apparatus 10, supercritical heat pump with primary fluid hot water from the hot water storage tank 12, the CO ₂ refrigerant in the heat source apparatus to the hot water storage in the hot water storage tank 12 Although the heat pump type hot water supply device 11 that constitutes the cycle is used, the present invention is not limited thereto, and a heat source device that constitutes the heat pump cycle using a chlorofluorocarbon refrigerant is used as long as the secondary fluid is heated with a high temperature fluid. It may be applied, or a heat source device such as a gas / oil water heater may be applied, and the primary fluid is not limited to water. Moreover, although one floor heating unit 50 and one bathroom heating dryer 60 are connected to the supply water channel 43, the structure of the heater may be different.

It is a schematic diagram which shows the whole structure of the multifunction hot-water supply apparatus which concerns on embodiment of this invention. It is a flowchart which shows the control outline | summary of the circulating fluid adhering prevention control in 1st Embodiment of this invention. It is a flowchart which shows the control outline | summary of the circulating fluid sticking prevention control in 2nd Embodiment of this invention.

Explanation of symbols

22 ... Hot water control device (heat exchange control means)
30 ... Primary side hot water circuit (Primary side high temperature fluid circuit)
31 ... Heat exchanger for heating (heat exchange means)
32 ... 1st water supply pump (1st water supply means)
40 ... Secondary fluid circuit (Secondary fluid circuit)
42 ... 2nd water supply pump (2nd water supply means)
45 ... Mixing valve (valve means)
50 ... Floor heating unit (heater)
53 ... Thermally operated valve (valve means)
60 ... Bathroom heating dryer (heater)
63 ... Thermally operated valve (valve means)
T1: First predetermined time ΣT: Operation integration time

Claims (3)

Heat exchange means (31) for circulating the high temperature fluid to the primary side to heat the circulating fluid on the secondary side, and first water supply means (32) for supplying the high temperature fluid to the heat exchange means (31) A primary high-temperature fluid circuit (30);
The heat exchange means (31), the heater (50, 60) using the circulating fluid, and the second water supply means (42) for supplying the circulating fluid to the heater (50, 60) are connected in an annular shape 2 A secondary circulating fluid circuit (40);
In the hot water supply type heating device comprising: the heat exchange control means (22) for controlling the flow of the primary side high-temperature fluid circuit (30) and the secondary side circulation fluid circuit (40);
The heat exchange control means (22) operates the second water supply means (42) for a predetermined operation when the heating operation using the heater (50, 60) has not been performed for a first predetermined time (T1) or longer. A hot water supply type heating device. Heat exchange means (31) for circulating the high temperature fluid to the primary side to heat the circulating fluid on the secondary side, and first water supply means (32) for supplying the high temperature fluid to the heat exchange means (31) A primary high-temperature fluid circuit (30);
The heat exchange means (31), a heater (50, 60) using the circulating fluid, a second water supply means (42) for supplying the circulating fluid to the heater (50, 60), and the heater (50 , 60), a secondary circulating fluid circuit (40) in which the valve means (45, 53, 63) for adjusting the circulating fluid supplied to the annular fluid is connected in an annular shape;
In the hot water supply type heating device comprising: the heat exchange control means (22) for controlling the flow of the primary side high-temperature fluid circuit (30) and the secondary side circulation fluid circuit (40);
When the heating operation using the heater (50, 60) has not been performed for the first predetermined time (T1) or longer, the heat exchange control means (22) sets the valve means (45, 53, 63) to a predetermined value. A hot water supply type heating device characterized by being operated. The hot water supply type heating device according to claim 1 or 2, wherein the first predetermined time (T1) is varied according to an operation integration time (ΣT) of the second water supply means (42).

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