JPH0968353A - Thermal storage hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase heating capacity at the time of starting thermal storage heating operation in order to raise room temperature in a short while and prevent an outlet opening from becoming excessively hot immediately after a start of heat radiation and avoid giving a person a sense of cold air flow. SOLUTION: A plurality of blower sections 3 which are parallelly provided in communication with thermal storage members 7 are operated only for a period of specified radiation time, and then only the blower sections 3 are operated to quickly start up heating operation so that an interior of a room is quickly heated, and flow rate is decreased when stored heat is depleted so that a sense of cold air flow is not given to a person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage warmer having a heat storage section.

[0002]

2. Description of the Related Art In recent years, a heat storage hot air blower has been used to enhance the heating effect by releasing the heat stored in a heat storage unit in advance at the start of operation.

Conventionally, this type of heat storage warm air blower has generally been constructed as shown in FIG. As shown in the figure, a warm air unit 102 including a positive temperature coefficient thermistor and a heat storage unit 103 in which a sheath heater is embedded in a heat storage layer are provided in communication with each other in a main body case 101, and a blower fan 104 blows air. The heat storage unit 103 is energized and controlled by the temperature detected by the heat storage temperature detection thermistor 105 provided above the heat storage unit 103.

A suction port 106 is provided on the rear surface of the main body case 101.
And a hot air outlet 107 is provided on the front surface. The suction port 106 is provided with a room temperature detection thermistor 108, and the blowout port 107 is provided with a blowout temperature detection thermistor 109.

With the above configuration, when performing the heat storage heating operation, first, the heat storage unit 103 is energized for 3 to 4 hours to store heat. Next, the energization of the heat storage unit 103 is stopped and the blower fan 104 is energized to release the heat stored in the heat storage unit 103. At the same time, the hot air unit 102 is energized to reheat and generate hot air.

The outlet temperature detecting thermistor 109 is the outlet 1
An abnormally high temperature when an obstacle is placed immediately before 07 is detected and the operation is safely stopped.

Further, the heat storage temperature detecting thermistor 105 detects the temperature of the heat storage unit 103, and when the temperature of the heat storage unit 103 exceeds a specified temperature due to heat storage, the energization of the heat storage unit 103 is stopped and the temperature at the time of heat storage is stored. Is to keep it properly.

Further, according to the room temperature detected by the room temperature detection thermistor 108, the hot air unit 102 is energized when the room temperature is lower than the set temperature, and the hot air unit 102 is stopped when the room temperature is higher than the set temperature. The room temperature was kept almost constant.

[0009]

In such a conventional heat storage warm air blower, the heat storage unit 10 is constituted only by the blower fan 104.
3 and the warm air unit 102, the amount of air is small and there is a problem that it takes time for the temperature of the room to rise at the start of heat radiation.

At the start of heat radiation, the temperature of the heat storage unit 103 itself is high, and if the amount of air from the blower fan 104 is small, the temperature of the hot air blown from the blowout port 107 will be high for a while, so that the blowout port 107 has a high temperature. There was a problem that expensive parts with high heat resistance were required.

Further, in the case where the warm air unit is stopped so as not to raise the blowout temperature too much during the heat radiation operation, when the heat storage amount of the heat storage unit is small, the blowout temperature is lowered to give the user a feeling of cool air and the room temperature. There was a problem that the efficiency of the rise would also be poor.

Further, since the heat storage amount of the heat storage unit 103 changes depending on the energization time before the start of heat radiation, there is a problem that the heat storage unit 103 cannot effectively radiate heat according to the heat storage amount.

Further, in order to keep the room temperature constant, the hot air unit 102 is energized and stopped by the temperature detected by the room temperature detection thermistor 108. Therefore, when the room temperature exceeds the set temperature, the hot air unit 102 is energized. However, since only the air is blown, the temperature of the room quickly drops and the change in the room becomes large, which causes a problem that the hot air unit 102 is repeatedly operated and stopped frequently.

Further, there is a problem in that the operation may end with the amount of heat stored in the heat storage unit 103 remaining, and the stored heat energy is wasted and cannot be effectively used.

The present invention solves the above problems, and a first object thereof is to provide a heat storage warmer for increasing the amount of heat radiation at the start of heat storage heating operation to raise the room temperature in a short time.

A second object is to prevent the temperature of the blowout port from becoming high immediately after the start of heat radiation and to use an inexpensive synthetic resin part having a low heat resistant temperature for the blowout port.

A third object is to keep the temperature of warm air constant immediately after the start of heat radiation, prevent the generation of cool air feeling for the user, and efficiently raise the room temperature.

A fourth object is to predict the heat storage amount of the heat storage unit before starting the heat radiation and effectively convert the total heat amount of the heat storage unit into warm air.

A fifth object is that after the room temperature reaches the set temperature, there is little change in the room temperature and stable operation is possible.

A sixth object is to prevent heat storage from remaining in the heat storage unit at the end of operation.

[0021]

The first means for achieving the first object of the present invention is a radiation heat generating means for heating both the heat storage material and the circulating air, and a radiant heating means for communicating with the heat storage material in parallel. It has a plurality of air blowing means provided, a heat radiation time determining means for determining a heat radiation time of the heat storage material, and a control means for controlling the radiation heat generating means and the air blowing means, and the control means starts heat radiation of the heat storage material. From the time, a plurality of operations of the blower means are performed for a heat release time determined by the heat release time determination means, and thereafter, the number of the blower means is reduced to operate.

Further, the second means for achieving the second object is such that the control means has a heating interruption means for temporarily stopping the operation of the radiant heat generating means from the start of heat radiation of the heat storage material. Is.

The third means for achieving the third object has a hot air temperature detecting means for detecting the hot air temperature at the outlet, and the control means has a temperature detected by the warm air temperature detecting means. When the temperature becomes lower than the reference temperature, the operation of the heating interruption means is released.

The fourth means for achieving the fourth object has a heat storage temperature detecting means for detecting the temperature of the heat storage material, and the control means determines the heat radiation time from the temperature detected by the heat storage temperature detecting means. The heat radiation time of the means is determined.

The fifth means for achieving the fifth object has a warm air heating means for heating only the circulating air and a room temperature detecting means for detecting the room temperature, and the steady operation after the elapse of the heat radiation time is carried out. In the above, the control means energizes the radiant heat generating means and the warm air heating means when the detected temperature of the room temperature detecting means is lower than the first set room temperature, and the detected temperature is between the first set room temperature and the second set room temperature. When it is in the interval, the radiant heat generating means or the warm air heating means is energized, and when the detected temperature is higher than the second set room temperature, the radiant heat generating means and the warm air heating means are stopped. .

Further, the sixth means for achieving the sixth object has a time measuring means for setting the operation ending time, and when the operation is ended by the time measuring means, the control means before the operation ends. Is configured so that at least the power supply to the radiant heat generating means is stopped.

[0027]

According to the present invention, by the constitution of the above-mentioned first means, a large amount of heat can be radiated from the heat storage material in a short time by energizing a plurality of air blowing parts provided in parallel at the start of the heat storage heating operation to increase the air volume. Therefore, the room temperature can be raised in a short time.

Further, by the structure of the second means, the heat storage unit is de-energized for a short time at the start of heat dissipation, only the blower fan is energized, and the hot air accumulated in the heat storage unit and the ventilation passage is first discharged. It is possible to suppress the temperature rise of the air outlet at the start of heat radiation.

With the configuration of the third means, the hot air temperature at the outlet is detected by the hot air temperature detecting means, and when the temperature is lower than the reference temperature, the heating interrupting means is released, whereby the radiation heat generating means is restored. It is possible to prevent the temperature of the hot air at the outlet from dropping too low.

Further, by the construction of the fourth means, the heat stored in the heat storage material can be exhausted completely by operating the heat storage material for an appropriate time according to the temperature of the heat storage material.

Further, according to the constitution of the fifth means, by switching each unit to be energized according to the room temperature and finely controlling the heat generation amount, the rise is accelerated when the room temperature is lower than the set temperature, and the room temperature becomes the set temperature. After reaching, the change in room temperature can be reduced.

Further, with the structure of the sixth means, it is possible to prevent the accumulated heat from remaining in the heat storage material by stopping the energization of the radiant heat generating means and releasing the heat before the end of the operation.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, a suction port 2 is provided on the back surface of the main body case 1, and in the main body case 1 there are two blower parts 3, 4 composed of motors 3a, 4a and fans 3b, 4b near the suction port 2. Are provided in parallel, and the heat storage unit 5 is arranged in communication with the discharge ports of the blowers 3 and 4. The heat storage unit 5 is provided with a radiant heat storage heater 6 having an output of about 560 W, and a space is provided on each side of the radiant heat storage heater 6.
The two heat storage materials 7 are arranged so as to face each other, and the heat storage material 7 is surrounded by a heat insulating material 8 via a space. The space around the radiant heat storage heater 6 and the heat storage material 7 serves as a ventilation path 9 for the blower units 3 and 4.

A warm air heater 10 having an output of about 800 W, such as a nichrome heater, is provided in the air passage 9 on the leeward side, and an air outlet 11 is provided on the front surface of the main body case 1. The warm air heater 10 does not depend on the temperature of the warm air to be ventilated, and the amount of heat generated is approximately proportional to the input. In addition, on the upper part of the main body 1, the blower parts 3, 4, the radiation heat storage heater 6 and the warm air heater 1 are provided.
A control unit 1a for controlling 0 is provided. The two blowers 3 and 4 operate for a time determined by a timer (not shown) as a heat radiation time determining means built in the controller 1a, and thereafter, only the blower 3 is in a steady operation.

In the above construction, when performing the heat storage heating operation, first, the radiant heat storage heater 6 is energized for about 1 hour to store heat in the heat storage material 7. Next, during the heat radiation operation, while the radiant heat storage heater 6 is still energized, both the motors 3a and 4a are energized to rotate the fans 3b and 4b, and the heat storage material 7 is stored from the two discharge ports facing the heat storage material 7. It releases a large amount of heat. At the same time, the hot air heater 10 is also energized to further heat the air heated by the heat storage material 7, whereby a large heating capacity can be exhibited from the start of heat dissipation. At this time, the control unit 1a performs heat radiation operation by the two air blowing units 3 and 4 for about 45 minutes, and thereafter, only the air blowing unit 3 is in a steady operation to stabilize the room temperature.

As described above, according to the heat storage warmer of the first embodiment of the present invention, since a large amount of air is sent to the surface of the heat storage material 7 by the two outlets of the two air blowing parts 3 and 4, a short time is required. The heat is efficiently dissipated in time, and is further heated by the warm air heater 10 and blown out from the air outlet 11, so that the heating capacity at the start of heat dissipation can be enhanced and the heating rising time of the room can be shortened.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those described in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the control section 1a has a function as a heating interruption means for stopping the energization of the radiant heat storage heater 6 and the warm air heater 10 for a short time of about 30 seconds from the start of heat radiation.

In the above structure, when heat is stored in the heat storage material 7 for a long time, the heat storage material 7 has a considerably high temperature, and the air around the heat storage material 7 also has a high temperature in proportion to the temperature of the heat storage material 7. In this state, the radiation heat storage heater 6 and the warm air heater 10
When the power is turned on, the temperature of the air outlet 11 becomes very high. Therefore, at the start of heat dissipation, the control unit 1a stops the energization of the radiant heat storage heater 6 and the warm air heater 10 for a short time of about 30 seconds as a heating interruption means, and energizes the motors 3a and 4b to encircle the heat storage material 7 with a large air volume. By discharging this air, the air flow sent to the outlet 11 does not become high-temperature hot air, but is discharged as warm air lowered to an appropriate temperature. After that, the radiation heat storage heater 6 and the warm air heater 10 are energized to continue the heat radiation operation.

Thus, according to the second embodiment of the present invention,
Since the radiant heat storage heater 6 and the warm air heater 10 are stopped for a short time by the heating interruption means, the air having a high temperature around the heat storage material 7 is discharged with a large air volume as it is for a short time at the start of heat dissipation, so the air outlet 11 Without being exposed to high heat,
An inexpensive synthetic resin part having a low heat resistant temperature can be used for the outlet 11.

Next, a third embodiment of the present invention will be described with reference to FIGS. 1, 2 and 4. The same components as those described in the first and second embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the thermistor 12 for detecting the warm air temperature in the ventilation passage between the warm air heater 10 and the outlet 11.
Are arranged. The control unit 1 a controls energization of the radiant heat storage heater 6 and the warm air heater 10 according to the temperature detected by the thermistor 12.

In the above structure, when the heat radiation of the heat storage material 7 is started, first, the energization of the radiant heat storage heater 6 and the warm air heater 10 is stopped, and the motors 3a, 4a of the blower units 3, 4 are turned on.
Energize. After the start of air blowing, the temperature of the hot air near the outlet 11 is measured by the thermistor 12, and when the measured temperature of the hot air falls below the reference temperature, the control unit 1a stops the heating interruption means and radiant heat storage heater 6, hot air heater. By energizing 10, it is possible to keep the temperature of the falling warm air substantially constant. Therefore, at the start of air blowing, the temperature can be lowered to a temperature that does not affect the material of the components of the air outlet 11, and the warm air temperature can be maintained so as not to drop too much.

As described above, according to the third embodiment of the present invention,
After the start of blowing, the hot air temperature is detected by the thermistor 12, and when the detected temperature becomes lower than the reference temperature, the radiant heat storage heater 6 and the hot air heater 10 are energized so that the hot air temperature at the outlet 11 does not drop. It can be maintained to improve the heating effect.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 1, 2 and 5. The same components as those described in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the heat insulating material 1 under the heat storage material 7
A thermistor 14 for detecting the temperature of the heat storage material 7 is arranged via the switch 3. The control unit 1a estimates the heat storage amount of the heat storage material 7 based on whether the temperature detected by the thermistor 14 is high or low, and calculates an appropriate heat radiation time.

In the above structure, in order to estimate the heat storage amount of the heat storage material 7 before starting the heat radiation operation, the thermistor 14
The temperature of the heat storage material 7 is indirectly measured by the control unit 1a, and the control unit 1a determines the operating time of the two blowing units 3 and 4 according to the temperature at this time. That is, when the temperature of the heat storage material 7 is high, the control unit 1a lengthens the time of heat radiation operation for energizing the motors 3a, 4a of the blower units 3, 4 and when the temperature of the heat storage material 7 is low, the heat radiation operation is performed. I'm shortening the time.

Therefore, by performing the heat radiation operation in the optimum time period according to the heat storage amount of the heat storage material 7, the heat storage material 7 is efficiently radiated, and even if the heat storage amount is small, the user does not feel a cold wind. can do. In the subsequent operation, the blower unit 4 is stopped and the single blower unit 3 performs a steady operation.

As described above, according to the fourth embodiment of the present invention,
While efficiently radiating heat according to the heat storage amount of the heat storage material 7, the blowout temperature does not decrease even when the heat storage amount of the heat storage material 7 is small, and the steady operation thereafter reduces the air flow rate to maintain the warm air temperature, You can eliminate the feeling of cold wind.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. 1, 2 and 6. The same components as those described in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a room temperature thermistor 15 for detecting the room temperature is arranged near the suction port 2 of the main body case 1. The controller 1a compares the room temperature Ta detected by the room temperature thermistor 15 with the first set room temperature T1 and the second set room temperature T2 to control the operation of the radiant heat storage heater 6 and the warm air heater 10. The set room temperature T1 is set lower than the set room temperature T2.

In the above construction, when the room temperature Ta detected by the room temperature thermistor 15 is lower than the set room temperature T1 during the steady operation, both the radiation heat storage heater 6 and the warm air heater 10 are energized to set the room temperature Ta to the set room temperature Ta. When it is between T1 and T2, the warm air heater 10 or the radiation heat storage heater 6
Energize only. In particular, since the radiant heat storage heater 6 heats air and also heats the heat storage material 7 by high-temperature radiant heat, the temperature of the hot air becomes lower than that when the hot air heater 10 is energized, and even after energization of the radiant heat storage heater 6 is stopped. Since the heat is stored in the heat storage material 7, the blowing temperature does not immediately drop. That is, the temperature of the warm air does not suddenly change even if the radiant heat storage heater 6 is repeatedly energized / stopped, and mellow heating operation can be performed. Therefore, when the room temperature Ta is between the set room temperatures T1 and T2, heating operation with different temperature changes can be performed by selecting either the warm air heater 10 or the radiant heat storage heater 6. When the room temperature Ta is equal to or higher than the set room temperature T2, the radiation heat storage heater 6
The energization of both the hot air heater 10 and the hot air heater 10 is stopped, and only the blower unit 3 is operated.

Thus, according to the fifth embodiment of the present invention,
Since the control unit 1a controls the energization of the radiant heat storage heater 6 and the warm air heater 10 according to the room temperature detected by the room temperature thermistor 15 to change the amount of heat generation, fine temperature control can be performed. The change in room temperature is reduced, stable steady operation can be performed, and operation with different heating feeling can be performed.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. 1, 2 and 7. The same components as those described in the first and fifth embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the control unit 1a is provided with a cut-off timer 1b as a time measuring means for setting an operating time.

In the above configuration, when the cut-off timer 1b is operated at the start of the operation and the operation end time is set, the control section 1a turns on the radiation heat storage heater 6 about 5 minutes before the end of the timer. The heating operation is performed by controlling the energization of only the warm air heater 10 for the remaining time until the timer is stopped. Therefore, when the operation end time is set in advance, the heat can be prevented from remaining in the heat storage material 7 at the end of the operation by ventilating the heat storage material 7 to radiate heat immediately before the end of the operation.

As described above, according to the sixth embodiment of the present invention,
The control unit 1a performs the heating operation while releasing the heat stored in the heat storage material 7 by the end of the set time of the cut timer 1b by stopping the energization of the radiant heat storage heater 6 before the end time of the cut timer 1b. Therefore, the operation can be ended without leaving any unnecessary heat storage in the heat storage material 7.

[0058]

As is apparent from the above embodiments, according to the present invention, a plurality of air-blowing means provided in parallel facing the heat storage material increase the air volume to radiate heat, thereby improving heat radiation efficiency. It is possible to provide a heat storage warm air blower that is effective in shortening the heating start-up time of a room.

Further, by providing the heating interruption means for stopping the energization of the radiation heat generating means for a fixed time from the start of heat radiation,
It is possible to provide a heat storage hot air blower that is effective in suppressing the temperature of the air outlet from rapidly rising and can be manufactured at low cost without using high temperature and heat resistant synthetic resin parts in the air outlet.

Further, a warm air temperature detecting means is provided at the air outlet,
By deciding the interruption time of the radiant heat generating means according to the detected temperature and energizing it, it is possible to maintain an appropriate temperature of the outlet after the start of heat dissipation, so that there is an effect that a natural warm air rising without a feeling of cold air can be obtained. A heat storage air blower can be provided.

Further, the temperature of the heat storage material immediately before the start of heat dissipation is detected by the heat storage temperature detecting means, and the operating time of the plurality of blowing means is determined at the start of heat dissipation, so that the stored heat is released in an appropriate time without waste. A heat storage warm air blower having an effect of being able to perform can be provided.

Further, by controlling the energization of the radiant heat generating means and the warm air heating means in accordance with the room temperature detected by the room temperature detecting means, it is possible to finely respond to the high and low of the room temperature, and it is possible to perform mellow heating with little temperature change. A heat storage warm air blower can be provided.

Further, by stopping the radiant heat generating means for storing heat in the heat storage material before the end of the operation, it is possible to provide a heat storage hot air blower having an effect of being able to perform energy saving operation without wasteful heat storage.

[Brief description of drawings]

FIG. 1 is a side sectional view of a heat storage warm air fan according to first to sixth embodiments of the present invention.

FIG. 2 is a front sectional view of the same first to sixth embodiments.

FIG. 3 is a temperature characteristic diagram at the start of heat dissipation in the second embodiment.

FIG. 4 is a temperature characteristic diagram at the start of heat radiation in the third embodiment.

FIG. 5 (a) is a temperature characteristic diagram during radiant heating operation when the heat storage time is short in the fourth embodiment. (B) is a temperature characteristic diagram when the heat storage time is long.

FIG. 6 is a temperature characteristic diagram of the fifth embodiment during heating operation.

FIG. 7 is a temperature characteristic diagram of the sixth embodiment before an operation stop.

FIG. 8 is a side sectional view of a conventional heat storage warm air blower.

[Explanation of symbols]

 1a Control part (control means) 1b Cut-off timer (time measuring means) 3 Blower part (blower means) 4 Blower part (blower means) 6 Radiant heat storage heater (radiant heating means) 7 Heat storage material 10 Warm air heater (warm air heating means) 12 Thermistor (warm air temperature detecting means) 14 Thermistor (heat storage temperature detecting means) 15 Thermistor (room temperature detecting means)

Claims (6)

[Claims] 1. A radiant heat generating means for heating both the heat storage material and the circulating air, a plurality of air blowing means connected in parallel to the heat storage material and provided in parallel, and a heat radiation time determining means for determining a heat radiation time of the heat storage material. A control means for controlling the radiant heat generating means and the blower means, the control means performing a plurality of operations of the blower means for a heat release time determined by the heat release time determining means from the start of heat release of the heat storage material. After that, a heat storage hot air blower which is operated by reducing the number of the blowing means. 2. The heat storage warmer according to claim 1, wherein the control means has a heating interruption means for temporarily stopping the operation of the radiation heat generation means from the start of heat radiation of the heat storage material. 3. A hot air temperature detecting means for detecting the hot air temperature at the outlet, wherein the control means operates the heating interrupting means when the detected temperature of the hot air temperature detecting means is below a reference temperature. The heat storage warm air blower according to claim 1 or 2, which is released. 4. The heat storage device according to claim 1, further comprising heat storage temperature detection means for detecting the temperature of the heat storage material, wherein the control means determines the heat release time of the heat release time determination means from the temperature detected by the heat storage temperature detection means. Hot air blower. 5. A warm air heating means for heating only circulating air and a room temperature detecting means for detecting room temperature are provided, and in steady operation after elapse of a heat radiation time, the control means is such that the temperature detected by the room temperature detecting means is first. If the detected temperature is between the first set room temperature and the second set room temperature, the radiant heating means and the warm air heating means are energized, and if the detected temperature is between the first set room temperature and the second set room temperature. 2. The regenerator according to claim 1, wherein the radiant heat generating means and the warm air heating means are stopped when the means is energized and the detected temperature is higher than the second set room temperature. 6. A timekeeping means for setting the end time of operation,
The heat storage hot air blower according to claim 1 or 5, wherein, when the operation is ended by the time counting means, the control means stops the energization of at least the radiant heat generating means before the end of the operation.