JP2005282899A - Heat medium supply type heating equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat medium supply type heating equipment capable of performing the heating operation to keep a temperature of a heated space within a comfortable temperature range even when the outside air temperature is changed. <P>SOLUTION: This heat medium supply type heating equipment comprises a heat source means 3 for supplying the heated heat medium to a heating terminal 2 through a heat medium circulating passage 1, an opening/closing means 4 for continuing and discontinuing the supply of the heat medium by opening and closing the heat medium circulating passage 1, and a control means 5 for controlling the operation of the heat source means 3 and the opening and closing operation of the opening/closing means 4. A target opening and closing ratio of the opening/closing means 4 is determined on the basis of the temperature difference between the temperature in the heated space and a target set temperature to control the opening and closing operation, and in a case of no temperature difference, the target opening and closing ratio is determined in such manner that the higher the outside air temperature is, the smaller a ratio of opening time in the target opening and closing ratio is . <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides heat source means for supplying a heated heat medium to a heating terminal through a heat medium circulation path, opening / closing means for opening and closing the heat medium circulation path and intermittently supplying the heat medium, operation of the heat source means, and Control means for controlling the opening / closing operation of the opening / closing means, and the control means keeps the opening / closing means open according to the temperature difference between the temperature in the heating target space and the target set temperature. And a closing time for maintaining the opening / closing means in a closed state, and the opening / closing operation of the opening / closing means is periodically performed in such a manner that the opening / closing ratio in a single cycle is adjusted to the target opening / closing ratio. The present invention relates to a heating medium supply type heating facility configured to execute open / close operation control repeatedly.

  In the heating medium supply type heating equipment as described above, the control means obtains the target open / close ratio according to the temperature difference between the room temperature in the heating target space or the floor temperature and the target set temperature, and the open / close ratio in a single cycle. In such a manner that the opening / closing operation of the opening / closing means is periodically repeated in a form that is adjusted so that the desired opening / closing ratio is obtained, the room temperature and the floor temperature in the heating target space become the target set temperature. Thus, the space to be heated is heated.

  Conventionally, in the opening / closing operation control, a heating medium having a constant temperature (60 ° C.) is circulated and supplied to the heating terminal from the heat source means through the heating medium circulation path, and the opening / closing means provided in the heating medium circulation path. The opening / closing type control valve is controlled to operate at a target opening / closing ratio determined by a predetermined correlation table. When the explanation is added, the single cycle is set to, for example, 20 minutes, and the target opening / closing ratio corresponding to the temperature difference between the temperature in the heating target space and the target set temperature is determined in advance as a correlation table having a certain correlation. Thus, the control means is configured to set the target open / close ratio based on the temperature difference between the temperature in the space to be heated and the target set temperature and the correlation table (see, for example, Patent Document 1). .

  In addition, conventionally, when the heating operation for supplying the heating medium to the heating terminal is started, the heating operation is started until the set time for rapid temperature increase elapses after the heating operation is started. Is configured to execute a rapid temperature rise control in which a heating medium having a temperature for rapid temperature rise higher than the temperature is circulated and supplied, but the set time for rapid temperature rise is a predetermined time (60 minutes). The temperature for rapid temperature increase of the heat medium was set to a constant temperature (80 ° C.) (see, for example, Patent Document 1).

JP 2000-121079 A

  In the above-described conventional configuration, for example, in a steady operation state in which opening / closing operation control is performed, when the outside air temperature is a reference temperature (for example, 5 ° C.), the temperature of the space to be heated falls within a comfortable temperature range. The temperature is set so that it can be adjusted. Similarly, at the start of the heating operation for executing the rapid temperature rise control, when the outside air temperature is the reference temperature, the temperature of the heating target space is set to a comfortable temperature range in as short a time as possible. It has been done.

  As described above, in the conventional configuration, the opening / closing operation control is performed based on a correlation table having a predetermined correlation so that heating can be performed at a comfortable temperature when the outside air temperature is the reference temperature as described above. Since it is the structure which calculates | requires the target opening-and-closing ratio in, there existed the following disadvantages.

  In other words, if the outside air temperature is close to the reference temperature as described above, the temperature is adjusted so that the temperature of the space to be heated falls within a comfortable temperature range, but the outside air temperature is the reference temperature. When the temperature is higher than, for example, higher than 15 ° C., even if the amount of heat supplied to the heating terminal is the same, the amount of heat escaping from the heating target space to the outside is smaller than that at the reference temperature. Therefore, if the opening / closing operation control is executed at the target opening / closing ratio according to the conventional configuration as described above, the amount of heat supplied to the heating terminal becomes large, and the rate of temperature increase when circulating the heat medium increases. The temperature of the space to be heated may overshoot to the high temperature side and become higher than the target temperature, and the temperature range called the comfortable temperature range may be shifted to the high temperature side. And thus, a possibility that comfort is impaired.

  If it demonstrates based on a specific example, in FIG. 7, the temperature area | region (area | region enclosed with a dashed-dotted line in the figure) generally called a comfortable temperature area | region when targeting a floor heating apparatus as a heating terminal is shown. Show. The room temperature is in the range of 18 ° C. to 23 ° C., and the range of the floor surface temperature of 25 ° C. to 31 ° C. is a comfortable temperature range. And the measurement result by the present applicant when changing the target set temperature when the outside air temperature is 5 ° C. and performing the temperature adjustment by the conventional configuration is shown by a line L1. From this figure, it can be seen that the line L1 is within a comfortable temperature range. The line L2 shows the measurement result when the outside air temperature is 10 ° C., and the line L3 shows the measurement result when the outside air temperature is 15 ° C. These lines deviate from the comfortable temperature range to the high temperature side, and when the outside air temperature becomes higher than the reference temperature, the temperature of the space to be heated deviates from the comfortable temperature range to the high temperature side, and comfort is increased. There is a risk of damage.

  Conventionally, when performing rapid temperature increase control, the set time for rapid temperature increase is set in advance so that heating can be performed at a comfortable temperature when the outside air temperature is the reference temperature as described above. Since the temperature for the rapid heating of the heating medium is set to a constant temperature, there are the following disadvantages.

  That is, when the outside air temperature is higher than the reference temperature, even when the amount of heat supplied to the heating terminal is the same, the amount of heat escaping from the heating target space to the outside is smaller than that at the reference temperature. From the above, a constant heating medium that is set based on the reference temperature as in the above-described conventional configuration as the temperature for rapid heating of the heating medium or the setting time for rapid heating when the rapid heating control is executed. If control is performed at a certain temperature and for a certain period of time, the amount of heat supplied to the heating terminal will be large, and the rate of temperature increase when circulating the heat medium will increase, and the temperature of the heating target space will exceed the high temperature side. The temperature may be higher than the target temperature after shooting, and the temperature may be deviated from a temperature range called a comfortable temperature range to the high temperature side, and comfort may be impaired.

  An object of the present invention is to provide a heating medium supply type heating facility capable of performing heating operation in a state where the temperature of the heating target space is within a comfortable temperature region even when the outside air temperature fluctuates. In the point.

The first characteristic configuration of the present invention includes a heat source means for supplying a heated heat medium to a heating terminal through a heat medium circulation path, an opening / closing means for opening and closing the supply of the heat medium by opening and closing the heat medium circulation path, and the heat source. Control means for controlling the operation of the means and the opening and closing operation of the opening and closing means,
The control means includes
According to a temperature difference between the temperature in the heating target space and a target set temperature, a target opening / closing ratio between an opening time for maintaining the opening / closing means in an open state and a closing time for maintaining the opening / closing means in a closed state is obtained. In the form of adjusting the opening / closing ratio in a single cycle to be the target opening / closing ratio, the opening / closing operation control for periodically repeating the opening / closing operation of the opening / closing means is performed. Heating equipment,
Outside temperature detection means for detecting outside temperature is provided,
The control means is
In the opening / closing operation control, the target is set such that the ratio of the opening time in the target opening / closing ratio when the temperature difference is the same is smaller as the outside air temperature detected by the outside air temperature detecting means is higher. The configuration is such that the open / close ratio is obtained.

  According to the first characteristic configuration, the outside air temperature is detected by the outside air temperature detecting means, and information on the outside air temperature detected by the outside air temperature detecting means is used as information for obtaining the target opening / closing ratio. That is, in the opening / closing operation control, the control means maintains the opening / closing means in the open state and the opening / closing means in the closed state according to the temperature difference between the temperature in the space to be heated and the target set temperature. In determining the target opening / closing ratio with respect to the closing time, the target opening / closing ratio is determined so that the ratio of the opening time in the target opening / closing ratio when the temperature difference is the same is smaller as the outside air temperature is higher, and in a single cycle The opening / closing operation of the opening / closing means is periodically repeated in such a manner that the opening / closing ratio is adjusted to the target opening / closing ratio.

  That is, when the opening / closing operation control is executed, the higher the outside air temperature, the smaller the open time ratio in the target opening / closing ratio when the temperature difference is the same. Therefore, when the outside air temperature is low, the opening / closing operation control is performed. The proportion of time is large and the amount of heat supplied to the heating terminal increases, so that the amount of heat necessary to heat the inside of the heating target space can be supplied, so that the temperature in the heating target space falls within a comfortable temperature range. Can be heated. When the outside air temperature is high, the ratio of the opening time is reduced and the heat medium is circulated and supplied, so that the amount of heat supplied to the heating terminal is suppressed to a small amount. The rate of increase in the temperature in the heating target space is not so large when the temperature of the heating target space is overshooting the temperature of the heating target space to the high temperature side, and it can be avoided that the temperature becomes higher than the target temperature, It becomes possible to keep the temperature of the space to be heated in a comfortable temperature range.

  For example, when the reference opening / closing ratio is set so that the temperature of the space to be heated falls within a comfortable temperature range at the temperature at which the outside air temperature is the reference, the outside air temperature is higher than the reference temperature. In some cases, the target opening / closing ratio is determined to be smaller than the ratio of the opening time in the reference target opening / closing ratio, and when the outside air temperature is lower than the reference temperature, By configuring the target opening / closing ratio so as to be larger than the ratio of the opening time in the reference target opening / closing ratio, the temperature of the heating target space falls within a comfortable temperature range even when the outside air temperature changes. Thus, the temperature can be adjusted.

  Therefore, even when the outside air temperature fluctuates, it has become possible to provide a heating medium supply type heating facility that can perform the heating operation in a state where the temperature of the heating target space is within a comfortable temperature range.

The second characteristic configuration of the present invention includes a heat source means for supplying a heated heat medium to a heating terminal through a heat medium circulation path, an opening / closing means for opening and closing the supply of the heat medium by opening and closing the heat medium circulation path, and the heat source. Control means for controlling the operation of the means and the opening and closing operation of the opening and closing means,
The control means includes
According to a temperature difference between the temperature in the heating target space and a target set temperature, a target opening / closing ratio between an opening time for maintaining the opening / closing means in an open state and a closing time for maintaining the opening / closing means in a closed state is obtained. The heating medium supply type is configured to execute the opening / closing operation control for periodically repeating the opening / closing operation of the opening / closing means in a form in which the opening / closing ratio in a single cycle is adjusted to the obtained target opening / closing ratio. Heating equipment,
Outside temperature detection means for detecting outside temperature is provided,
The control means is
When the heating operation for supplying the heating medium to the heating terminal is started, the temperature is higher than the temperature for steady operation after the heating operation is started until the set time for rapid temperature increase elapses. It is configured to execute the opening / closing operation control after executing the rapid temperature increase control for circulatingly supplying the heating medium having the temperature for rapid temperature increase, and
In the rapid temperature increase control, the higher the outside air temperature is, the shorter the set time for rapid temperature increase is set, or the higher the outside air temperature is, the lower the temperature for rapid temperature increase is set. It is in the point which is comprised.

  According to the second characteristic configuration, the outside air temperature is detected by the outside air temperature detecting means, and the information of the outside air temperature detected by the outside air temperature detecting means is the set time for the rapid temperature rise or the rapid heating medium. This is used as information when determining the temperature for temperature increase. That is, when executing the rapid temperature increase control, the control unit sets the rapid temperature increase setting time to a shorter time as the outside air temperature is higher, or rapidly increases the heat medium as the outside air temperature is higher. The temperature for warming is set to a low temperature. Then, the control means starts the heating operation when the heating operation for supplying the heating medium to the heating terminal is started, and executes the rapid temperature increase control after the heating operation is started. Until the time elapses, the heating medium having a temperature for rapidly raising the heating medium is circulated and supplied.

  That is, when the rapid temperature increase control is executed, if the outside air temperature is low, the set time for rapid temperature increase is set to a long time, or the temperature for rapid temperature increase of the heating medium is set to a high temperature. Therefore, even if the temperature of the heat medium is the same, the time for circulating and supplying the heating medium to the heating terminal becomes longer, or the temperature of the heating medium is set even if the time for circulating and supplying the heating medium to the heating terminal is the same. The amount of heat supplied to the heating terminal is increased, and the amount of heat necessary to heat the inside of the heating target space can be supplied, and the temperature in the heating target space is comfortable. Heating can be performed to fit in the area.

  When the outside air temperature is high, the set time for rapid temperature rise is set to a short time, or the temperature for rapid temperature rise of the heat medium is set to a low temperature, so the temperature of the heat medium is the same. However, even if the time for circulating and supplying the heating medium to the heating terminal is shortened, or even if the heating medium is circulated and supplied to the heating terminal, the temperature of the heating medium is lowered. Since the amount of heat generated is suppressed to a small amount, the rate of increase in the temperature of the heating target space when the heating medium is circulated and supplied does not increase so much, and the temperature of the heating target space exceeds the high temperature side. It is possible to avoid a temperature higher than the target temperature by shooting, and the temperature of the space to be heated can be kept in a comfortable temperature region.

  Therefore, even when the outside air temperature fluctuates, it has become possible to provide a heating medium supply type heating facility that can perform the heating operation in a state where the temperature of the heating target space is within a comfortable temperature range.

In addition to the first feature configuration or the second feature configuration, the third feature configuration according to the present invention includes:
When the outside air temperature detected by the outside air temperature detecting means becomes equal to or lower than the set temperature for preventing freezing, the heating medium is circulated to the heating terminal to prevent the heating medium from freezing in the heating medium circulation path. The anti-freezing operation control is configured to be executed.

  According to the third characteristic configuration, when the outside air temperature detected by the outside air temperature detecting means becomes equal to or lower than the set temperature for preventing freezing, the freeze preventing operation control is executed. In this case, it is possible to prevent the heat medium from being frozen and to avoid disadvantages such as damage to a member due to the heat medium being frozen, and to use as a control parameter in the opening / closing operation control or the rapid temperature rise control. Since the outside air temperature detecting means for detecting the outside air temperature is also used as a detecting means for detecting whether or not it is the set temperature for preventing freezing, the temperature detecting means for detecting the outside air temperature and freezing The configuration can be simplified as compared with the case where the preventive temperature detection means is provided separately, and means suitable for implementing the feature configuration 1 or the feature configuration 2 can be obtained.

A heating medium supply type heating facility according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, a heating medium supply type heating facility includes a heating terminal 2 such as a floor heating device, and a heat source device 3 as a heat source unit that supplies a heating medium heated to the heating terminal 2 through a heating medium circulation path 1. , A heat valve 4 as an opening / closing means for opening and closing the heat medium circulation path 1, a control section 5 as a control means for controlling the operation of the heat source unit 3 and the opening / closing operation of the heat valve 4, and communication with the control section 5. A remote control 6 is provided. The heating terminal 2 and the remote controller 6 are arranged corresponding to a heating target space K such as a living room or a Japanese-style room, and the remote control 6 includes a room temperature sensor 17 for detecting the room temperature in the heating target space K. .

The heat source unit 3 is configured to be able to switch the heat medium supply temperature of the heat medium supplied to the heating terminal 2, and is connected to each of the forward flow path 1a and the return flow path 1b of the heat medium circulation path 1. In the middle of the in-machine flow path 18, a systern 7 for storing the heat medium in the heat source in-machine flow path 18, a circulation pump 8 for circulatingly supplying the heating medium to the heating terminal 2, and a heat medium flowing through the heat source in-machine flow path 18 are provided. A heat exchanger 10 or the like that is heated by combustion of the burner 9 is provided, and a fan 11 or the like that supplies combustion air to the burner 9 is provided.
The fuel supply passage 12 for supplying the fuel gas to the burner 9 is provided with a fuel gas on / off valve 13 for intermittently supplying the fuel gas and a fuel gas adjusting valve 14 for adjusting the fuel gas supply amount. An igniter 15 and a flame rod 16 for confirming the ignition of the burner 9 are also provided.

  A return thermistor 19 for detecting the temperature of the heat medium is provided upstream of the cistern 7 in the heat source machine flow path 18 in the heat medium circulation direction, and the heat medium in the heat source machine flow path 18 is higher than the heat exchanger 10. A forward thermistor 20 for detecting the temperature of the heat medium is provided on the downstream side in the circulation direction, and a thermal valve 4 is provided in the forward side flow path 1 a of the heat medium circulation path 1. And it is comprised so that supply of the heat medium to the heating terminal 2 may be interrupted by opening and closing this thermal valve 4 during the operation | movement of the heat-source equipment 3. FIG.

  Inside the heat source unit 3, an outside temperature thermistor 21 is provided as outside temperature detecting means for detecting the ambient temperature inside the heat source unit 3 as the outside temperature, and detection information of the outside temperature thermistor 21 is input to the control unit 5. It becomes the composition which is done. When the outside air temperature detected by the outside air temperature thermistor 21 is equal to or lower than the set temperature for preventing freezing, the control unit 5 circulates the heat medium to the heating terminal only during the set time elapses to generate heat. The freeze prevention operation control for preventing the freezing of the heat medium in the medium circulation path 1 is executed.

  The control unit 5 and the remote controller 6 are configured to freely communicate command information such as start and stop of operation of the heat source unit 3 and target temperature set by the remote controller 6 and temperature information such as room temperature by the room temperature sensor 17. Has been. Incidentally, the target set temperature is configured to be set in, for example, seven steps in increments of 2 ° C. between 16 ° C. and 28 ° C.

  The controller 5 starts the operation of the heat source unit 3 when the remote controller 6 commands the start of the operation of the heat source unit 3, and when the remote control 6 commands the operation stop of the heat source unit 3, the control unit 5 operates the heat source unit 3. Is configured to stop.

  When the control operation of the control unit 5 at the start and stop of the operation of the heat source apparatus 3 is described, the control unit 5 operates the fan 11 when receiving control information for instructing the start of the heating operation from the remote controller 6. Then, the fuel gas on-off valve 13 and the fuel gas regulating valve 14 are opened to start the combustion of the burner 9, and the circulation pump 8 is operated to start the operation of the heat source unit 3. When the control unit 5 receives control information for instructing to stop the operation of the heat source unit 3 for heating operation from the remote controller 6, the control unit 5 closes the fuel gas on-off valve 13 and the fuel gas adjustment valve 14 to stop the combustion of the burner 9. After that, the operation of the heat source unit 3 is stopped by stopping the operation of the fan 11 and the operation of the circulation pump 8.

  And when the control part 5 starts the heating operation which supplies a heat medium with respect to the heating terminal 2, it is for steady operation until the set time for rapid temperature rising passes after starting a heating operation. In the steady operation after the hot dash operation is completed, the hot dash operation is performed in which the heating medium having the temperature for the rapid temperature increase higher than the temperature is circulated and supplied. According to the temperature difference between the temperature and the target set temperature, the target opening / closing ratio between the opening time for maintaining the thermal valve 4 in the open state and the closing time for maintaining the thermal valve in the closed state is obtained. In an embodiment in which the opening / closing ratio is adjusted to the target opening / closing ratio, the opening / closing operation control for periodically repeating the opening / closing operation of the thermal valve 4 is executed.

The control operation of the control unit 5 in the hot dash operation will be described.
Based on the detection information of the return thermistor 19 and the forward thermistor 20, the control unit 5 controls the fuel gas so that the detected temperature (temperature of the heating medium) of the forward thermistor 20 becomes the temperature for rapid temperature increase (72 ° C.). While adjusting the opening degree of the adjustment valve 14 and the rotation speed of the fan 11, the thermal valve 4 is maintained in an open state while a set time for rapid temperature rise set as will be described later. ing. In addition, the temperature for rapid temperature rise should just be temperature higher than the temperature for steady operation, and is not limited to 72 degreeC.

  In the rapid temperature increase control, the controller 5 sets the rapid temperature increase setting time th for executing the hot dash operation to a shorter time as the outside air temperature detected by the outside air temperature thermistor 21 is higher. It is configured. Specifically, when the outside air temperature is less than 10 ° C., 60 minutes is set as the set time th for rapid temperature rise, and when the outside air temperature is 10 ° C. or more and less than 15 ° C., the set time th for rapid temperature rise. When 30 minutes is set and the outside air temperature is 15 ° C. or higher, 0 minutes is set as the setting time th for rapid temperature rise.

The control operation of the control unit 5 in the steady operation will be described.
Based on the detection information of the return thermistor 19 and the forward thermistor 20, the control unit 5 opens the fuel gas regulating valve 14 so that the temperature of the circulating heating medium becomes the set temperature for steady operation (60 ° C.). And the rotation speed of the fan 11 are adjusted, and the thermal valve 4 is maintained in an open state in accordance with the temperature difference between the room temperature by the room temperature sensor 17 as the temperature in the space to be heated and the target set temperature by the remote controller 6. The target opening / closing ratio between the opening time and the closing time for maintaining the thermal valve 4 in a closed state is obtained, and the opening / closing of the thermal valve 4 is adjusted so that the opening / closing ratio in a single cycle becomes the target opening / closing ratio. Opening / closing operation control for periodically repeating the operation is executed.

  When explaining the opening / closing operation control, the control unit 5 sets the single cycle to 20 minutes, and every time the single cycle elapses, the control unit 5 determines how many minutes the open time and how many minutes the closed time in the next single cycle. The target open / close ratio calculation process for obtaining the target open / close ratio is executed, and the open / close operation of the thermal valve 4 is periodically repeated so that the open / close ratio in the next single cycle becomes the calculated target open / close ratio. Like to do. For example, if the target open / close ratio obtained by the target open / close ratio calculation processing is 14 minutes for the open time and 6 minutes for the close time, the thermal valve 4 is first maintained in the open state for 14 minutes, 4 is kept closed for 6 minutes.

  In the target opening / closing ratio calculation process of the opening / closing operation control, the control unit 5 determines the ratio of the opening time in the target opening / closing ratio when the temperature difference between the room temperature by the room temperature sensor 17 and the target set temperature by the remote controller 6 is the same. The target open / close ratio is determined so that the higher the outside air temperature detected by the outside air temperature thermistor 21 is, the lower the temperature becomes.

When the explanation is added, as shown in FIG. 2, the control unit 5 obtains the room temperature T2 by the room temperature sensor 17 from the target set temperature T1 by the remote controller 6 as the operation state when the outside air temperature is a low temperature of 10 ° C. or less. A reference table in which an opening / closing ratio between the opening time and the closing time is determined for each set range of the subtracted temperature difference ΔT is stored as a reference opening / closing ratio.
Then, the control unit 5 determines that the open / close ratio when the temperature difference ΔT is the same in a part of the correspondence relationship between the temperature difference ΔT and the open / close ratio according to the outside air temperature detected by the outside air temperature thermistor 21 is the outside air temperature. The adjustment table corresponding to the outside air temperature is created by shifting the correspondence between the temperature difference ΔT and the open / close ratio by a set amount so that the value varies depending on the temperature. The target opening / closing ratio is obtained according to the difference ΔT.

A configuration for obtaining the target open / close ratio will be described with a specific example of the outside air temperature.
For example, when the outside air temperature is 10 ° C. or more and less than 15 ° C., the correspondence between the temperature difference ΔT and the open / close ratio in the reference table in FIG. 2 is set so that the open / close ratio is shifted upward by two steps with respect to the temperature difference ΔT. Thus, the reference table in FIG. 2 is adjusted to the adjustment table shown in FIG. 3 to create a table corresponding to the outside air temperature. Then, in the adjustment table shown in FIG. 3, the target open / close ratio is obtained according to the temperature difference ΔT obtained by subtracting the room temperature T2 from the room temperature sensor 17 from the target set temperature T1 from the remote controller 6. For example, when the temperature difference ΔT is 0.2 to 0.0, the target opening / closing ratio is 6 minutes for the opening time and 14 minutes for the closing time.

  When the outside air temperature is 15 ° C. or higher, the correspondence between the temperature difference ΔT and the open / close ratio in the reference table in FIG. 2 is set so that the open / close ratio is shifted up by 4 steps with respect to the temperature difference ΔT. The reference table in 2 is adjusted to the adjustment table shown in FIG. 4 to create a table corresponding to the outside air temperature. Then, in the adjustment table shown in FIG. 4, the target opening / closing ratio is obtained according to the temperature difference ΔT obtained by subtracting the room temperature T2 from the room temperature sensor 17 from the target set temperature T1 from the remote controller 6. For example, when the temperature difference ΔT is 0.2 to 0.0, the target opening / closing ratio is an opening time of 2 minutes and a closing time of 18 minutes.

  Incidentally, when the outside air temperature is less than 10 ° C., the correspondence between the temperature difference ΔT and the open / close ratio in the reference table in FIG. 2 is used as it is, and in the table shown in FIG. The target open / close ratio is obtained according to the temperature difference ΔT obtained by subtracting the room temperature T2 from 17.

Next, the control operation of the control unit 5 will be described based on the flowchart of FIG.
First, when the outside air temperature Tg detected by the outside air temperature thermistor 21 is equal to or lower than the set temperature Tt (4 ° C.) for preventing freezing, the freeze preventing operation control is executed (steps 1 and 2). In this freeze prevention operation control, the burner 9 operates the circulation pump 8 in a state where it does not burn, circulates the heating medium to the heating terminal 2, and circulates the heating medium after a preset freeze prevention operation time has elapsed. Stop. In this way, the freezing of the heat medium is prevented.

  If there is a heating operation command from the remote controller 6 in a state where the anti-freezing operation control is not performed, the set time th for rapid temperature increase in which the hot dash operation is performed according to the outside air temperature Tg detected by the outside air temperature thermistor 21 Change the setting. That is, when the outside air temperature Tg is less than 10 ° C., 60 minutes is set as the set time th for rapid temperature rise, and when the outside air temperature Tg is 10 ° C. or more and less than 15 ° C., the set time th for rapid temperature rise is 30. Minutes are set, and when the outside air temperature Tg is 15 ° C. or higher, 0 minutes is set as the set time th for rapid temperature rise (steps 4 to 8).

  Then, the hot dash operation is started (step 9). When the explanation is added, the operation of the heat source unit 3 is started, and the operation of the heat source unit 3 is performed so that the temperature of the heat medium supplied from the heat source unit 3 to the heating terminal 2 becomes the temperature for rapid temperature increase (72 ° C.). When the elapsed time tx from the start of the circulation and supply of the heat medium reaches the set time th for rapid temperature rise set as described above, the hot dash operation is terminated (step 10).

  When the hot dash operation is finished, the routine shifts to a steady operation, and the target open / close ratio calculation process as described above is executed to obtain the target open / close ratio in a state corresponding to the outside air temperature Tg (step 12). That is, as described above, the target opening / closing ratio is obtained using any one of the tables in FIGS. 2 to 4 according to the outside air temperature Tg. For example, if the target open / close ratio obtained in the target open / close ratio calculation process is 14 minutes for the open time and 6 minutes for the close time, the heat operated valve 4 is maintained for 14 minutes after the heat operated valve 4 is opened. The thermal valve 4 is opened / closed so that the open / close ratio in a single cycle becomes the target open / close ratio obtained by the target open / close ratio calculation process (step 13). . If there is no heating operation request command from the remote controller 6 during hot dash operation or steady operation, the hot dash operation or steady operation during the operation is terminated (steps 11 and 14). In addition, if a set time (for example, 5 hours) or more has elapsed since the start of the heating operation, the outside air temperature Tg may be fluctuated as compared to the start of the operation. The target open / close ratio is reset in a state corresponding to the temperature Tg (step 15).

  When the heating operation command in the remote controller 6 is temporarily stopped after the heating operation has been performed for a long time and the heating operation command is again commanded immediately thereafter, when the hot dash operation is performed, the temperature is increased. Since there is a possibility that the temperature will rise too much, when a command to start operation is given, if the temperature difference between the detected value of the room temperature sensor 17 and the target set temperature is smaller than the set value, the hot dash operation is not executed. Also good.

  Then, by performing the opening / closing operation control as described above, as shown in FIG. 6, heating is performed in a state where the room temperature and the floor surface temperature of the heating target space are within a comfortable temperature region (region surrounded by a one-dot chain line). It becomes possible to drive. Incidentally, the line L1 ′ shown in FIG. 6 shows changes in the room temperature and the floor surface temperature when the target set temperature is variously changed when the outside air temperature is 5 ° C., and the line L2 ′ shows the outside air temperature. Shows the change in room temperature and floor surface temperature when the temperature is 10 ° C. A line L3 'indicates a change in room temperature and floor surface temperature when the outside air temperature is 15 ° C.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above embodiment, in the rapid temperature rise control, when the outside air temperature Tg is less than 10 ° C., 60 minutes is set as the set time th for rapid temperature rise, and the outside air temperature Tg is 10 ° C. or more and less than 15 ° C. In this case, 30 minutes is set as the set time th for rapid temperature rise, and 0 minute is set as the set time th for rapid temperature rise when the outside air temperature Tg is 15 ° C. or higher. Instead of such a configuration, the following configuration may be used.

  For example, in addition to the above configuration, when the outside air temperature falls below a set temperature (for example, 5 ° C.) lower than 10 ° C., a time longer than 60 minutes may be set as the set time th for rapid temperature rise. Well, as the outside air temperature is higher, the setting time for the rapid temperature increase is set to a shorter time. Instead of switching the setting time for the rapid temperature increase in a stepwise time, the outside air temperature It may be changed and set in a state of continuously changing in accordance with the change of.

(2) In the above-described embodiment, in the rapid temperature increase control, the setting time th for rapid temperature increase is set to a shorter time as the outside air temperature Tg is higher, but instead of such a configuration, In the rapid temperature increase control, the temperature for rapid temperature increase of the heating medium may be set to a lower temperature as the outside air temperature Tg is higher. For example, when the outside air temperature Tg is less than 10 ° C., the temperature for rapid heating of the heating medium is set to 72 ° C., and when the outside air temperature Tg is 10 ° C. or more and less than 15 ° C., the temperature for rapidly heating the heating medium. Is set to an intermediate temperature lower than 72 ° C. (for example, 65 ° C.), and when the outside air temperature Tg is 15 ° C. or higher, the temperature for rapidly raising the heating medium is set to a temperature lower than the intermediate temperature (for example, 60 ° C.). For example, the amount of heat supplied to the heating terminal is reduced by lowering the temperature of the heating medium as the outside air temperature Tg is higher.

  In addition, the outside air temperature Tg is not divided into three stages as described above, but is divided into four or more stages, or the set time and heat for the rapid temperature increase steplessly according to the change in the outside air temperature. It is good also as a structure which changes the temperature for rapid temperature rising of a medium.

(3) In the above embodiment, the switching operation control is performed when the outside air temperature is less than 10 ° C., and is opened and closed for each set range of the temperature difference ΔT between the temperature in the heating target space and the target set temperature. A reference table in which a ratio is set is set, and the target opening and closing when the temperature difference ΔT is the same for each of the case where the outside air temperature is 10 ° C. or more and less than 15 ° C. and the case where the outside air temperature is 15 ° C. or more. An adjustment table in which the reference table is changed so that the ratio of the open time in the ratio becomes smaller as the outside air temperature is higher is created, and the target opening / closing ratio is obtained according to the temperature difference ΔT based on the created adjustment table However, instead of such a configuration, the following configuration may be used.

  For example, a reference table similar to the reference table in the above embodiment is set as an application when the outside air temperature is in a set temperature region (for example, 5 ° C. to 10 ° C.), and the outside air temperature is in the set temperature region. In this case, the target opening / closing ratio is obtained using the reference table. When the outside air temperature becomes lower than the set temperature, the ratio of the opening time in the target opening / closing ratio when the temperature difference ΔT is the same is the outside air temperature. As the configuration is such that an adjustment table in which the reference table is changed so as to become smaller as the temperature is higher, in other words, larger as the outside air temperature is lower, and the target opening / closing ratio is obtained based on the created adjustment table. Also good. At that time, when the outside air temperature is higher than the set temperature region, the reference table may be applied, or when the outside air temperature is higher than the set temperature region, the temperature difference ΔT is applied. An adjustment table is created by changing the reference table so that the ratio of the open time in the target open / close ratio when the temperature is the same becomes smaller as the outside air temperature is higher, and the target open / close ratio is set based on the created adjustment table. It is good also as a structure to require.

  Further, instead of using the reference table in which the open / close ratio is set for each set range of the temperature difference ΔT between the temperature in the heating target space and the target set temperature as described above, for example, the open / close for each temperature difference ΔT. The target open / close ratio can be obtained by using a linear proportional relationship or a nonlinear correlation in which the ratio is determined, and the target open / close ratio may be obtained according to the temperature difference ΔT.

(4) In the above-described embodiment, the opening / closing operation control is executed after the rapid temperature increase control. In the rapid temperature increase control, the higher the outside air temperature, the shorter the set time for the rapid temperature increase. In the opening / closing operation control, the ratio of the opening time in the target opening / closing ratio when the temperature difference is the same is smaller as the outside air temperature detected by the outside air temperature detecting means is higher. However, instead of such a configuration, the following configuration may be used.

  In the rapid temperature increase control, the set time for the rapid temperature increase and the heat medium temperature are kept constant regardless of the outside air temperature, and in the opening / closing operation control, the target when the temperature difference is the same The target opening / closing ratio may be determined so that the ratio of the opening time in the opening / closing ratio becomes smaller as the outside air temperature detected by the outside air temperature detecting means becomes higher.

Further, it may be configured as follows.
In the rapid temperature increase control, the setting time for the rapid temperature increase is set to a shorter time as the outside air temperature is higher, or the heating medium temperature is lowered as the outside air temperature is higher, and the opening / closing operation control is performed. In the configuration, the target opening / closing ratio may not be changed according to the outside air temperature.

(5) In the above embodiment, in the rapid temperature increase control, the temperature of the heat medium is set to be higher than the temperature for steady operation and the heat medium is circulated and supplied. As the rapid temperature increase control, the heating medium may be supplied at the same temperature as that for steady operation.
It is also possible to implement the configuration without such rapid temperature rise control. That is, when the heating operation is started, the opening / closing operation control is immediately executed.

(6) In the above embodiment, when the outside air temperature Tg detected by the outside air temperature detecting means is equal to or lower than the set temperature for preventing freezing, the control means executes the freeze preventing operation control. As described above, the temperature detection means for preventing freezing and the outside air temperature detecting means are not limited to those used in combination, but may include other detection means, or may be configured not to perform the above-described freeze prevention operation control.

(7) In the above embodiment, one heating terminal and one opening / closing means are provided. However, a plurality of heating terminals are provided, and an opening / closing means is provided corresponding to each of the plurality of heating terminals. However, the number of heating terminals can be changed as appropriate.
Incidentally, in the case of having a plurality of heating terminals and opening / closing means, the ratio of the opening operation in the target opening / closing ratio when the temperature difference between the temperature in the heating target space and the target set temperature is the same varies depending on the outside air temperature. As described above, the target opening / closing means for obtaining the target opening / closing ratio can be implemented for all of the plurality of opening / closing means, or only a part of the opening / closing means can be implemented.

(8) In the above embodiment, the heating medium supply type heating facility according to the present invention is exemplified by the configuration in which the heating medium is supplied from the heat source unit to one heating terminal. Applicable to other heating medium supply type heating facilities such as a heating medium supply type heating facility equipped with a two-temperature type heat source device that supplies a low temperature heating medium and a high temperature heating medium to a high temperature heating terminal Is possible.

(9) In the above embodiment, as the heat source means, the one that supplies the heating medium heated by the burner combustion to the heating terminal is exemplified, but for example, the one that supplies the heating medium heated by the electric heater to the heating terminal, etc. Various other heat source means are applicable.

Overall schematic diagram of heating medium supply system Criteria table that defines the open / close ratio for each temperature difference setting range Adjustment table with reference table adjusted according to outside temperature Adjustment table with reference table adjusted according to outside temperature Flow chart showing the control operation of the control unit Diagram showing the relationship between comfortable temperature range and temperature change The figure which shows the relationship between the comfortable temperature range and temperature change in the past

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat-medium circulation path 2 Heating terminal 3 Heat source means 4 Opening-closing means 5 Control means 21 Outside temperature detection means

Claims (3)

Heat source means for supplying the heated heat medium to the heating terminal through the heat medium circulation path, opening / closing means for opening and closing the heating medium circulation path to intermittently supply the heat medium, operation of the heat source means, and opening / closing of the opening / closing means Control means for controlling the operation, and
The control means includes
According to a temperature difference between the temperature in the heating target space and a target set temperature, a target opening / closing ratio between an opening time for maintaining the opening / closing means in an open state and a closing time for maintaining the opening / closing means in a closed state is obtained. In the form of adjusting the opening / closing ratio in a single cycle to be the target opening / closing ratio, the opening / closing operation control for periodically repeating the opening / closing operation of the opening / closing means is performed. Heating equipment,
Outside temperature detection means for detecting outside temperature is provided,
The control means is
In the opening / closing operation control, the target is set such that the ratio of the opening time in the target opening / closing ratio when the temperature difference is the same is smaller as the outside air temperature detected by the outside air temperature detecting means is higher. Heating medium supply type heating equipment configured to obtain an open / close ratio. Heat source means for supplying the heated heat medium to the heating terminal through the heat medium circulation path, opening / closing means for opening and closing the heating medium circulation path to intermittently supply the heat medium, operation of the heat source means, and opening / closing of the opening / closing means Control means for controlling the operation, and
The control means includes
According to a temperature difference between the temperature in the heating target space and a target set temperature, a target opening / closing ratio between an opening time for maintaining the opening / closing means in an open state and a closing time for maintaining the opening / closing means in a closed state is obtained. The heating medium supply type is configured to execute the opening / closing operation control for periodically repeating the opening / closing operation of the opening / closing means in a form in which the opening / closing ratio in a single cycle is adjusted to the obtained target opening / closing ratio. Heating equipment,
Outside temperature detection means for detecting outside temperature is provided,
The control means is
When the heating operation for supplying the heating medium to the heating terminal is started, the temperature is higher than the temperature for steady operation after the heating operation is started until the set time for rapid temperature increase elapses. It is configured to execute the opening / closing operation control after executing the rapid temperature increase control for circulatingly supplying the heating medium having the temperature for rapid temperature increase, and
In the rapid temperature increase control, the higher the outside air temperature is, the shorter the set time for rapid temperature increase is set, or the higher the outside air temperature is, the lower the temperature for rapid temperature increase is set. Heating medium supply type heating equipment configured in The control means is
When the outside air temperature detected by the outside air temperature detecting means becomes equal to or lower than the set temperature for preventing freezing, the heating medium is circulated to the heating terminal to prevent the heating medium from freezing in the heating medium circulation path. The heating medium supply type heating system according to claim 1 or 2, wherein the heating prevention system is configured to execute freeze prevention operation control.

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