JP2006010156A - Radiation heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable heater for reducing nonuniformity of the indoor temperature, by enabling hot air heating for blowing off heat of a sheet-like heater in a room as hot air by arranging an electric blower, by mounting the sheet-like heater capable of radiation heating. <P>SOLUTION: The electric blower 8 is arranged in an air duct 6 composed of the sheet-like heater 1 and a back board 5. A heating element 1a for constituting the sheet-like heater 1 is heated by carrying an electric current, to respectively enable the hot air heating when operating the electric blower 8 in its state and operation of the radiation heating when the electric blower is stopped. Switching of the operation is performed by an operation mode changeover switch provided in an operation maneuvering part 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radiant heater using a planar heater of an electric heater.

  This type of conventional radiant heater includes an electric heater provided with a far infrared ray that emits far infrared rays by heating a ceramic plate provided with an electrothermal film on the back of a heating element made of ceramic, for example (see, for example, Patent Document 1). ).

  FIG. 9 shows a conventional radiant heater described in Patent Document 1. As shown in FIG. As shown in FIG. 9, the heater main body 65, the electric heating plate 66 coated with a conductive electrothermal film on the ceramic, the power switch 67 disposed on one side of the heater main body 65, and the front of the heater main body 65. It consists of a net 68 attached.

  However, the conventional configuration has the following problems because it is a heating system that does not emit warm air and relies on radiant heat and natural convection generated when the heating element becomes high temperature.

  (1) That is, most of the user's feeling of heating in front of the main body of the heater is due to radiant heat from the ceramic, and the air temperature around the user is much higher than that when using a hot air heater. Since it is low, it is difficult to obtain a sufficient feeling of heating.

  (2) About the part by the natural convection of heating, specific gravity becomes light because the air around the heating plate receives heat, and it rises from the upper part of the heater body to the ceiling of the use space, and is eventually cooled and descends to the floor. Because it depends on the natural convection phenomenon, the temperature difference between the top and bottom of the heating space becomes large, the head area is hot and the feet are cold, and the feeling of heating is poor.

(3) Since the heat exchange between the electric heating plate and room air is by natural convection described in the above section (2), the heat exchange efficiency is much higher than when heat is exchanged by forming an air flow around the electric heating plate by a blower. However, not only does the heating capacity decrease, but the temperature around the heating plate increases. Therefore, there is a risk that the temperature of the outer shell will rise and the user will be burned, and for internal parts, it will be necessary to change the material to a specification with higher heat resistance or to add heat shielding parts. There are issues with cost.
Utility Model Registration No. 3078488

  In view of the problems of the prior art, the problem to be solved by the present invention is to realize comfortable heating with reduced indoor temperature fluctuations and high safety radiation heating with reduced temperature rise of the device body. Is to provide a machine.

  In order to solve the above-mentioned problems, the radiant heater of the present invention has a sheet heater in which a heating element is provided on a glass plate, and an air passage for hot air heating is formed on the back side of the sheet heater. It is. This enables not only radiant heating operation but also hot air heating operation, and by blowing out hot air from the equipment, it is possible to realize comfortable heating that suppresses uneven vertical temperature in the room, and the flow of air around the heating element Heat exchange is promoted by being much quicker than that during radiant heating, and the cooling effect of the body temperature can be obtained, thereby improving safety.

  The radiant heater according to the present invention enables not only the radiant heating operation but also the hot air heating operation, thereby realizing comfortable heating with reduced indoor vertical temperature unevenness and safety with reduced temperature rise of the device body. A high radiant heater can be provided.

  A first invention includes a planar heater provided with a heating element on a glass plate, and a control means for controlling energization of the planar heater, and communicates with a hot air outlet and an air inlet on the back side of the planar heater. By using a radiant heater that forms an air passage for hot air heating, radiant heating is performed by a planar heater, and air is heated in the air passage to warm air heating. It is possible to provide a suppressed radiant heater that is comfortable.

  According to a second aspect of the present invention, there is provided a planar heater in which a heating element is provided on a glass plate, a frame on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the frame, and the planar heater. A top plate that holds the top surface and has an operation unit, a back plate that covers the back surface of the planar heater and is connected to a gantry, a side plate, and the top plate, and a control unit that controls energization of the planar heater. An air passage for hot air heating that is connected to the hot air outlet and the air inlet is formed between the planar heater and the back plate, and an electric blower is provided in a part of the air passage.

  By adopting this embodiment, radiant heating is performed by a planar heater, air is further heated by an air passage and is blown by an electric blower, and warm air heating is also performed. A radiant heater can be provided.

  According to a third aspect of the present invention, there is provided a planar heater in which a heating element is provided on a glass plate, a frame on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the frame, and the planar heater. A top plate that holds the top surface and has an operation unit, a back plate that covers the back surface of the planar heater and is connected to a gantry, a side plate, and the top plate, and a control unit that controls energization of the planar heater. An air passage for hot air heating that is connected to the hot air outlet and the air inlet is formed between the planar heater and the back plate, and an electric blower is provided below the air passage.

  By adopting this embodiment, the motor of the electric blower, which is a heavy object, is arranged at the lower part of the device main body, the center of gravity can be lowered, and the device body can be prevented from being easily overturned. Further, since the motor of the electric blower is located below the heating element, it is possible to eliminate the possibility that the motor and wiring are heated by the remaining heat of the heating element after the power supply to the device main body is stopped, leading to an unexpected temperature and causing a failure.

  According to a fourth aspect of the present invention, there is provided the radiant heater according to any one of the first to third aspects, wherein the hot air outlet is provided at a lower portion of the planar heater and the air suction port is provided at an upper portion of the planar heater. Thus, since the heating element that is a heat source when generating warm air during warm air heating is on the upstream side of the electric blower, the air flow around the heating element generated by the generation of warm air tends to be a uniform flow, Heat exchange between the heating element and the surrounding airflow can be efficiently performed, and the feeling of heating can be improved, and uneven cooling of the temperature of the device body can also be suppressed.

  5th invention is either 1st invention from 4th invention, It has a driving | operation operation part provided with the operation mode switch which switches a radiant heating operation and a warm air heating operation, The said operation operation part When the radiant heating operation is instructed, the electric blower is stopped according to the signal issued by the operation mode changeover switch, and when the warm air heating operation is instructed, the electric blower is operated according to the signal issued by the operation mode changeover switch. Since it is a radiant heater equipped with a control means having a function, it can be operated by switching between the radiant heating operation and the hot air heating operation at will by the user.

  According to a sixth aspect of the present invention, there is provided a planar heater provided with a heating element on a glass plate, a first opening provided below the planar heater, and a first opening provided above the planar heater. 2 opening portions, a first air passage for hot air heating provided in communication with the first opening portion and the second opening portion, respectively, and a second air passage for promoting natural convection during radiant heating, A first electric blower for warm air provided in the lower part of the first air passage; a second electric blower for promoting natural convection provided in the upper part of the second air passage; the planar heater; the first electric blower; 2 It is a radiant heater provided with the control means which controls an electric blower and switches a warm air heating operation and a radiant heating operation.

  By adopting this embodiment, during the warm air heating operation, only the first electric blower is operated and the warm air is blown out from the first opening at the lower part of the device main body, so that a comfortable heating feeling with less indoor vertical temperature unevenness can be obtained. At the same time, during the radiant heating operation, only the second electric blower is operated to promote heat dissipation from the second opening at the upper part of the device body, thereby lowering the temperature of the machine body and helping the convection of room air to improve the feeling of heating.

  According to a seventh aspect of the present invention, there is provided a planar heater in which a heating element is attached to a glass plate, a frame on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the frame, and the planar heater. A top plate that holds an upper surface and has a driving operation unit, and a back plate that covers the back surface of the planar heater and is connected to the gantry, the side plate, and the top plate, and has a first opening at a lower portion of the planar heater. A second opening is provided at the top of the planar heater, a partition plate is provided between the planar heater and the back plate, and a first air passage for warm air heating is provided between the planar heater and the partition plate. And forming a second air passage for promoting natural convection during radiant heating between the partition plate and the back plate, and lowering both the first air passage and the second air passage to the first opening. The upper part communicates with the second opening part, and the first electric blower is provided at the lower part of the first air passage. Both are provided with a second electric blower in the upper part of the second air passage, and an operation mode changeover switch for controlling the planar heater, the first electric blower and the second electric blower and switching between the radiant heating operation and the hot air heating operation. When the operation operation unit is provided, and when the operation operation unit instructs a radiant heating operation, the first electric blower is stopped and the second electric blower is operated according to the signal issued by the operation mode changeover switch, When a warm air heating operation is instructed, it is a radiant heater having control means for operating the first electric blower and stopping the second electric blower in accordance with a signal generated by the operation mode changeover switch.

  By adopting this embodiment, at the time of warm air heating operation, only the first electric blower is operated to generate warm air from the opening below the device, and a comfortable heating feeling with less vertical temperature unevenness in the room can be obtained, During the radiant heating operation, only the second electric blower is operated to promote heat dissipation from the opening at the upper part of the device, thereby lowering the temperature of the machine body and helping the convection of room air to improve the feeling of heating. In addition, in this configuration, the first air passage formed between the planar heater and the partition plate is used during the hot air heating operation, and is formed between the partition plate and the back plate during the radiant heating operation. Because the second air passage is used, the surface temperature of the heating element is reduced by reducing the temperature drop around the sheet heater due to the air flow generated for air temperature cooling during the radiant heating operation, and the decrease in the amount of radiation is prevented. It is possible to achieve both safety and comfortable heating.

  According to an eighth aspect of the present invention, there is provided a planar heater provided with a heating element on a glass plate, a first opening provided below the planar heater, and a first opening provided above the planar heater. 2 openings, a first air passage for warm air heating provided in upper and lower communication with the first opening and the second opening, respectively, an upper end at the second opening, and an air suction at the lower end A second air passage for promoting natural convection at the time of radiant heating, respectively, a first electric blower for warm air provided at a lower portion of the first air passage, and a second air passage Radiation comprising a second electric blower for promoting natural convection provided in the upper part, and a control means for controlling the sheet heater, the first electric blower and the second electric blower and switching between the hot air heating operation and the radiant heating operation. It is a heater.

  According to a ninth aspect of the present invention, there is provided a planar heater in which a heating element is attached to a glass plate, a frame on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the frame, and an upper surface of the planar heater. And a back plate connected to the top plate, the side plate, and the top plate, covering the back surface of the planar heater, and having a first opening at the bottom of the planar heater. A second opening is provided on the top of the planar heater, a third opening is provided on the back plate, a partition plate is provided between the planar heater and the back plate, and a space between the planar heater and the partition plate is provided. A first air passage for warm air heating is formed, and a second air passage for promoting natural convection during radiant heating is formed between the partition plate and the back plate, and the lower portion of the first air passage is The upper opening communicates with the first opening, the upper opening communicates with the second opening, the lower part of the second air passage becomes the third opening, and the upper part An operation for switching between a radiant heating operation and a hot air heating operation by communicating with each of the two openings and providing a first electric blower below the first air passage and a second electric blower above the second air passage A driving operation unit having a mode switching switch; when a radiant heating operation is instructed from the driving operation unit, the first electric blower is stopped according to a signal issued by the operation mode switching switch; It is a radiant heater which has a control means which operates and stops the 2nd electric blower according to the signal which the above-mentioned operation mode change switch issued, when driving and warm air heating operation are instructed.

  By adopting these embodiments, the surface temperature of the heating element is maintained by reducing the temperature drop around the planar heater due to the air flow generated for cooling the body temperature during radiant heating operation, as in the sixth aspect of the invention. It is possible to prevent a decrease in the amount of radiation and to achieve both safety and a comfortable heating feeling, but the first opening communicates only with the lower part of the first air passage, and the lower part of the second air passage is the back plate. Since the first electric blower is operated during the warm air heating operation, an air flow is generated only in the first air passage and a high flow rate is obtained. The heating performance can be improved.

  According to a tenth aspect of the present invention, there is provided a planar heater in which a heating element is provided on a glass plate, a first opening provided below the planar heater, and a first opening provided above the planar heater. 2 opening portions, a third opening portion for air suction, a first air passage for warm air heating provided with a lower portion connected to the first opening portion and an upper portion connected to the third opening portion, A second air passage for promoting natural convection during radiant heating in which an upper end portion is communicated with the second opening portion and a lower end portion is communicated with the third opening portion, and for the hot air provided at the lower portion of the first air passage The first electric blower, the second electric blower for promoting natural convection provided at the upper part of the second air passage, the planar heater, the first electric blower, and the second electric blower are controlled, and the hot air heating operation and radiation are controlled. It is a radiation heater provided with the control means which switches heating operation.

  An eleventh aspect of the invention is a planar heater in which a heating element is attached to a glass plate, a frame on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the frame, and the planar heater. And a back plate connected to the base plate, the side plate, and the top plate, and having a first opening at the bottom of the planar heater. A second opening at the top of the sheet heater, a third opening at the back plate, and a partition plate between the sheet heater and the back plate, and between the sheet heater and the partition plate A first air passage for warm air heating is formed, a second air passage for promoting natural convection is formed between the partition plate and the back plate during radiant heating, and a lower portion of the first air passage is formed in the first air passage. The upper portion communicates with the third opening portion, the lower portion of the second air passage is connected to the third opening portion, and the upper portion is connected to the third opening portion. An operation mode in which the first electric blower is provided at the lower portion of the first air passage and the second electric blower is provided at the upper portion of the second air passage to switch between the radiant heating operation and the hot air heating operation. A driving operation unit having a changeover switch, and when the operation operation unit instructs a radiant heating operation, the first electric blower is stopped according to a signal issued by the operation mode changeover switch and the second electric blower is It is a radiant heater which has a control means which operates and stops the 2nd electric blower according to the signal which the above-mentioned operation mode change switch issued, when driving and warm air heating operation are instructed.

  By adopting these embodiments, as in the eighth aspect of the invention, the surface temperature of the heating element is maintained by reducing the temperature drop around the planar heater due to the air flow generated for cooling the body temperature during radiant heating operation. The radiation amount can be prevented from decreasing, and both safety and a comfortable heating feeling can be achieved. The lower part of the first air passage is the first opening part, and the upper part is a third opening part provided separately on the back plate. Since the lower part of the second air passage communicates with the third opening and the upper part communicates with the second opening, respectively, when the first electric blower is operated during the warm air heating operation, the air is supplied only to the first air passage. Since the flow is generated and a fast flow rate is obtained, the heat exchange efficiency is increased and the heating performance can be improved.

  In the twelfth invention, a filter is provided in the third opening of any of the eighth to eleventh inventions, so that dust and dust that are being supplied are prevented from entering the inside of the device body. In addition, it is possible to prevent abnormal overheating of the equipment and a reduction in heating capacity caused by a reduction in the air volume caused by dust clogging in the air passage or adhering to the blades of the electric blower.

  In the thirteenth aspect of the invention, the rotational speed of the second electric blower of any of the eighth to twelfth aspects of the invention is lower than the rotational speed of the first electric blower. The air flow generated for temperature cooling can be set to an appropriate amount. As a result, the temperature drop around the planar heater is less than that of the sixth and seventh inventions, and the surface temperature of the heating element is maintained. Therefore, it is possible to prevent a decrease in the amount of radiation and to achieve both safety and a comfortable feeling of heating.

  In the fourteenth aspect, since the cross-flow fan is used in the first electric blower or the second electric blower according to any one of the first to thirteenth aspects, the above-described hot air or cooling is used. An air flow can be generated uniformly, a comfortable heating feeling with little temperature unevenness can be obtained, and the body structure can be made compact.

  The object of the present invention can be achieved by making the main portions of the first to fourteenth inventions into embodiments, so the details of the embodiments corresponding to the respective claims will be described below with reference to the drawings. It will be described and the best mode for carrying out the present invention will be described. The present invention is not limited to the present embodiment. Further, in the description of the present embodiment, the same reference numerals are given to the same configuration and the effects and the same description is not repeated.

(Embodiment 1)
1 is an external view of a radiant heater according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view, and FIG. 3 is an energization circuit diagram.

  1, 2, and 3, the radiant heater has a sheet heater 1 on which the heating element 1 a is printed on the back surface of the glass plate 1 b on the entire front surface of the apparatus main body, and the sheet heater 1 is mounted on the lower part thereof. The base 3 to be placed, the side plate 4 that holds the side surface of the planar heater 1, the top surface of the planar heater 1 that holds the operation operation unit 7, the back surface of the planar heater 1, It comprises a gantry 3, a side plate 4, and a back plate 5 connected to the top plate 2.

  And the air path 6 for warm air heating is arrange | positioned in the vertical direction facing the heat generating body 1a between the back side of the heat generating body 1a of the planar heater 1, and the backplate 5, and the crossflow fan is provided in the lower part. The electric air blower 8 is further provided, and is positioned at the lower part of the planar heater 1 so as to face the lower part of the front surface of the apparatus body in a horizontally long position, and is located at the upper part of the planar heater 1. An air suction port 6b that faces the upper part of the front of the device body in a horizontally long shape and sucks air in a room that communicates with the air passage 6 is provided.

  The operation operation unit 7 includes a power switch 10 of the apparatus main body, an operation mode switching switch 11 for switching between radiant heating operation and hot air heating operation, and a variable resistor 13 with a knob. The control unit 12 is configured by connecting the heat prevention switch 14, the heating element 1 a of the planar heater 1, and the power plug 9.

  About the radiation heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the power plug 9 is inserted into an outlet (not shown), the power switch 10 is turned on, and the radiant heating operation or the hot air heating operation is selected by the operation mode changeover switch 11 for the radiant heating operation. When the radiant heating operation is selected with the operation mode changeover switch 11, the electric blower 8 is stopped and the heating element 1a of the sheet heater 1 is energized, the heating element 1a generates heat, and the glass plate 1b on the front surface of the apparatus body is heated. Then, radiation is radiated from the surface of the glass plate to heat a user (not shown) in front of it. At this time, the ambient air heated by the planar heater 1 rises upward to the upper part of the device body and heads toward the ceiling of the room, and the air that has been cooled eventually causes natural convection to descend toward the floor to slowly heat the room. To do.

  The current value of the heating element 1a is controlled by the variable resistor 13, the heating value of the heating element 1a can be controlled, and the heating amount of the glass plate 1b can be adjusted. An abnormal heating prevention switch 14 that cuts off a power supply circuit to the heating element 1a when the top plate 2 is abnormally heated is attached to the upper portion of the planar heater 1.

  When the hot air heating operation is selected with the operation mode changeover switch 11 for the hot air heating operation, the electric blower 8 is operated, and the heating element 1a of the sheet heater 1 is energized and the heating element 1a generates heat. Accordingly, the indoor air indicated by the arrow in FIG. 2 is sucked from the air suction port 6b by the operation of the electric blower 8, and exchanges heat with the heating element 1a while descending the air passage 6 to become warm air 8a. Is heated from the hot air outlet 6a to heat the room where the user (not shown) is located. At this time, since the warm air outlet 6a from which the warm air 8a is blown out is located at the lower part of the apparatus main body, which is the lower part of the planar heater 1, the heat generated by the heating element 1a can be transmitted farther, and the operation is started. Therefore, it is possible to perform heating that is warm from the feet in a short period of time and with little vertical temperature unevenness.

  As described above, in the present embodiment, the user's will is to perform warm warm air heating operation that is excellent in immediate warmth and that suppresses indoor vertical temperature unevenness, and comfortable radiant heating operation without a feeling of airflow. Can be realized freely.

  Further, since the electric blower 8 is located below the heating element 1a, even if the temperature around the heating element 1a rises due to an abnormal overheating of the heating element 1a or a decrease in the air volume due to the inflow of dust into the air passage 6. It is difficult to receive heat, and the possibility that the wiring (not shown) or the motor (not shown) of the electric blower 8 reaches an unexpected temperature and breaks down can be eliminated. Furthermore, since the electric blower 8 is positioned below the heating element 1a, the air flow around the heating element 1a tends to be uniform, and heat exchange between the heating element 1a and the surrounding air flow is efficiently performed. It is possible to improve the feeling of heating and to suppress uneven cooling of the device body temperature.

  Furthermore, since the blade shape of the electric blower 8 is a cross flow fan, it is possible not only to generate hot air uniformly and improve the feeling of heating, but also to make the configuration of the apparatus main body compact.

  In the present embodiment, only one electric blower 8 is used. However, two electric blowers 8 may be used separately for hot air heating and for natural convection promotion during radiant heating. The electric blower may be configured to be used separately for hot air heating and natural convection promotion during radiant heating by switching the rotation direction.

(Embodiment 2)
4 is an external view of a radiant heater according to Embodiment 2 of the present invention, FIG. 5 is a longitudinal sectional view, and FIG. 6 is an energization circuit diagram. This embodiment is different from the first embodiment in that the basic configuration of the radiant heater that can perform radiant heating and hot air heating is the same as that of the first embodiment, and that the natural convection action during radiant heating can be promoted by an electric blower. Is.

  4, 5, and 6, a partition plate 23 is provided in the vertical direction between the heating element 1 a and the back plate 5 of the planar heater 1, and the first air path 24 is provided between the heating element 1 a and the partition plate 23. And a second air passage 25 is formed between the partition plate 23 and the back plate 5. A horizontally long first opening 21 facing the lower front surface of the apparatus main body is provided at the lower portion of the planar heater 1, and a horizontally long second opening 22 facing the upper front surface of the apparatus main body is provided at the upper portion of the planar heater 1. The lower portions of the first air passage 24 and the second air passage 25 both communicate with the first opening 21, and the upper portions of the first air passage 24 and the second air passage 25 both communicate with the second opening 22. is there.

  Further, a first electric blower 26 of a cross flow fan is provided between the lower portion of the first air passage 24 and the second air passage 25 and the first opening 21, and the upper portion of the second air passage 25 and the second opening portion. 22 is provided with a second electric blower 27 of a cross flow fan. The operation mode switch 31 for switching between radiant heating and hot air heating is configured to be connected in series to the heating element 1a and to switch between the first electric blower 26 and the second electric blower 27 connected in parallel.

  About the radiation heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the power plug 9 is inserted into an outlet (not shown), the power switch 10 is turned on, and the operation mode changeover switch 31 is used to select the radiant heating operation or the hot air heating operation.

  When the radiant heating operation is selected by the operation mode changeover switch 31 of the radiant heating operation, the second electric blower 27 is connected to the second electric blower 27, the second electric blower 27 operates while the first electric blower 26 is stopped, and the sheet heater 1 generates heat. The body 1a is energized. Then, the heating element 1a generates heat, the glass plate 1b on the front surface of the apparatus body is heated and radiated and radiated from the glass plate surface to heat a user (not shown) in front of it and heated by the planar heater 1. The surrounding air rises upwards toward the ceiling of the room, and the cooled air eventually cools the room slowly by natural convection descending toward the floor.

  During this radiant heating operation, in the present embodiment, the second electric blower 27 is operating, so that the first opening 21 located at the lower part of the apparatus main body as shown by the two-dot chain line arrow in FIG. The indoor air is sucked from the air, and the natural convection promoting wind 29 is generated from the second opening 22 located in the upper part of the device main body through the second air passage 25 to generate the natural convection to promote the natural convection. In addition to improving the heating condition, the temperature of the equipment body during radiant heating operation, especially the back side and top side, can be reduced, and safety can be improved without adding costs by adding components such as a heat shield for temperature control. You can also.

  Further, the natural convection promoting wind 29 in the radiant heating operation passes through the second air passage 25 by the second electric blower 27 located above the partition plate 23 and the second air passage 25, and the first air in the vicinity of the heating element 1a. Since no airflow is generated in the path 24, the surface temperature of the heating element 1a can be maintained as usual, and a decrease in the amount of radiation can be prevented. The current value of the heating element 1a is controlled by the variable resistor 13, the heating value of the heating element 1a can be controlled, and the heating amount of the glass plate 1b can be adjusted.

  Next, when the hot air heating operation is selected by the operation mode changeover switch 31 of the hot air heating operation, the first electric blower 26 is operated while the second electric blower 27 is stopped while the second electric blower 27 is stopped, and the surface shape is changed. The heating element 1a of the heater 1 is energized and the heating element 1a generates heat. Then, as indicated by solid arrows in FIG. 5, the indoor air 28 is sucked from the second opening 22 located in the upper part of the device body, passes through the first air passage 24 and the second air passage 25, and the first air When passing through the path 24, heat is exchanged with the heating element 1a to form the warm air 30, and the warm air 30 is mixed with the indoor air that has descended through the second air path 25 and is located at the lower part of the device body. The room where the user (not shown) is blown out from the opening 21 is heated.

  And since the 1st opening part 21 from which the warm air 30 is blown out exists in the lower part of an apparatus main body, it can be made to reach the heat | fever which generate | occur | produced in the heat generating body 1a further, and it can be carried out from a foot in a short time after a driving | operation start. Heating can be performed warmly and with little up-and-down temperature unevenness.

  As described above, in the present embodiment, the user's will is to perform warm warm air heating operation that is excellent in immediate warmth and that suppresses indoor vertical temperature unevenness, and comfortable radiant heating operation without a feeling of airflow. The natural convection promoting wind 29 that promotes natural convection can be generated without reducing the amount of radiation during the radiant heating operation, and more comfortable radiant heating can be realized.

  Further, since the blade shape of the first electric blower 26 and the second electric blower 27 is a cross flow fan, the hot air 30 or the natural convection promoting air 29 can be generated uniformly and not only can improve the feeling of heating. The configuration of the device body can be made compact.

(Embodiment 3)
FIG. 7 is a longitudinal sectional view of the radiant heater according to the third embodiment of the present invention. The external view of the radiant heater is common to FIG. 4, and the energization circuit diagram is common to FIG. In the present embodiment, the basic radiant heater configuration capable of performing radiant heating and hot air heating is the same as that of the first embodiment, and natural convection promoting wind that promotes natural convection without reducing the amount of radiation during radiant heating operation. The basic configuration to be generated is the same as that of the second embodiment, and is different in the configuration in which the first air path and the second air path are made independent by the partition plate.

  4, 6, and 7, the partition plate 41 has an upper end facing the intermediate portion of the second opening and a lower end integrally connected to the back plate 5 on the upper side of the first electric blower 26. The first air passage 42 and the second air passage 43 are configured to be independent. That is, the planar air heater 1 and the partition plate 41 constitute a first air passage 42, and the partition plate 41 and the back plate 5 constitute a second air passage 43.

  Accordingly, the first electric blower 26 is disposed at the lower portion of the first air passage 42, and the second electric blower 27 is disposed at the upper end portion of the second air passage 43. A first opening 21 is provided in the lower part of the planar heater 1, a second opening 22 is provided in the upper part of the planar heater 1, and the back plate 5 communicates with the lower end of the second air passage 43 to the intake port. A third opening 40 is provided. The lower part of the first air passage 42 communicates with the first opening 21, the upper part communicates with the second opening 22, the lower part of the second air passage 43 communicates with the third opening 40, and the upper part communicates with the second opening 22. is there. A filter 40 a is attached to the third opening 40.

  About the radiation heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the power plug 9 is inserted into an outlet (not shown), the power switch 10 is turned on, and the operation mode change-over switch 31 is used to select the radiant heating operation or the hot air heating operation.

  When the radiant heating operation is selected by the operation mode changeover switch 31 of the radiant heating operation, the second electric blower 27 operates while the first electric blower 26 is stopped, and the heating element 1a of the sheet heater 1 is energized. Then, the heating element 1a generates heat, the front glass plate 1b is heated and radiated and radiated from the glass plate surface to heat a user (not shown) in front of it, and the surroundings heated by the planar heater 1 The air rises upwards toward the ceiling of the room, and the cooled air eventually heats the room slowly with natural convection descending toward the floor. At this time, as the second electric blower 27 is operating, the indoor air is sucked from the third opening 40 with the filter 40 a through the second air passage 43 as indicated by the two-dot chain line arrow. The natural convection promoting wind 45 released from the second opening 22 into the room is generated to promote the above-described natural convection and improve the indoor heating state, and the temperature of the apparatus body during the radiant heating operation, particularly the back side and the top surface. The safety can be improved without increasing the cost by adding components such as a heat shield for temperature countermeasures.

  Furthermore, since the natural convection promoting wind 45 during the radiant heating operation passes through the second air passage 43, no air flow is generated in the vicinity of the heating element 1a, and the second electric blower 27 is the first electric motor during the hot air heating operation. Since the air volume of the natural convection promoting wind 45 is reduced by operating at a lower rotational speed than the blower 26, the surface temperature of the heating element 1a can be maintained, and a decrease in the amount of radiation can be prevented. In addition, since the filter 40a is provided in the third opening 40 for taking in the natural convection promoting wind 45, dust and dust that are being supplied are prevented from entering the inside of the apparatus body, and the dust is in the second air path. It is possible to prevent abnormal overheating of the equipment and a reduction in heating capacity caused by clogging in 43 or adhering to the blades of the second electric blower 27 and reducing the air volume.

  Next, when the hot air heating operation is selected by the operation mode changeover switch 31 of the hot air heating operation, the first electric blower 26 operates while the second electric blower 27 is stopped, and the heating element 1a of the sheet heater 1 is energized. Then, the heating element 1a generates heat. Then, indoor air indicated by a solid line arrow is sucked from the second opening 22 and passes through the first air passage 42 to exchange heat with the heating element 1a to become hot air 44. The hot air 44 is the first opening 21. The room where the user (not shown) is blown out is heated.

  At this time, since the first opening 21 through which the hot air 44 is blown out is located at the lower part of the apparatus main body, it is possible to transmit the heat generated in the heating element 1a farther, and it is warm from the feet in a short time from the start of operation. Heating with little vertical temperature unevenness can be performed. Moreover, only the first air passage 42 passes through the warm air 44, and the heat exchange efficiency with the heating element 1a can be increased as compared with the case of the radiant heater described in the second embodiment, and the heating performance can be improved. .

  As described above, in the present embodiment, the user's will is to perform warm warm air heating operation that is excellent in immediate warmth and that suppresses indoor vertical temperature unevenness, and comfortable radiant heating operation without a feeling of airflow. The natural convection promoting wind 45 that promotes natural convection can be generated without reducing the amount of radiation during the radiant heating operation, and more comfortable radiant heating can be realized.

  Further, since the blade shape of the first electric blower 26 and the second electric blower 27 described above is a cross flow fan, the hot air 44 or the natural convection promoting air 45 can be generated uniformly and the heating feeling can be improved. Instead, the aircraft configuration can be made compact.

(Embodiment 4)
FIG. 8 is a longitudinal sectional view of the radiant heater according to Embodiment 4 of the present invention. The external view is the same as FIG. 4 and the energization circuit diagram is the same as FIG. In the present embodiment, the basic radiant heater configuration capable of performing radiant heating and hot air heating is the same as that of the first embodiment, and natural convection promoting wind that promotes natural convection without reducing the amount of radiation during radiant heating operation. The basic configuration to be generated is the same as that of the third embodiment, and is different in the configuration of the first air path and the second air path that are made independent by the partition plate.

  4, 6, and 8, the partition plate 50 has an upper end portion hermetically connected to the lower edge of the second opening 22, and a lower end portion on the upstream side of the first electric blower 26, and the second electric blower 27. The first air passage 51 and the second air passage 52 are made independent by connecting to a substantially middle portion of the third opening 53 formed in the back plate 5 on the downstream side. That is, the partition plate 50 is provided between the sheet heater 1 and the back plate 5, and the sheet heater 1 and the partition plate 50 constitute the first air path 51, and the partition plate 50 and the back plate 5 form the second air path. 52 is constituted.

  Accordingly, the first electric blower 26 is disposed at the lower portion of the first air passage 51, and the second electric blower 27 is disposed at the upper end portion of the second air passage 52. The lower part of the first air passage 51 communicates with the first opening 21, the upper part communicates with the third opening 53, the lower part of the second air passage 52 communicates with the third opening 53, and the upper part communicates with the second opening 22. is there. A filter 53 a is attached to the third opening 53.

  About the radiation heater comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the power plug 9 is inserted into an outlet (not shown), the power switch 10 is turned on, and the operation mode change-over switch 31 is used to select the radiant heating operation or the hot air heating operation.

  When the radiant heating operation is selected by the operation mode changeover switch 31 of the radiant heating operation, the second electric blower 27 operates while the first electric blower 26 is stopped, and the heating element 1a of the planar heater 1 is energized. Then, the heating element 1a generates heat, the front glass plate 1b is heated and radiated and radiated from the glass plate surface to heat a user (not shown) in front of it, and the surroundings heated by the planar heater 1 The air rises upwards toward the ceiling of the room, and the cooled air eventually heats the room slowly with natural convection descending toward the floor. At this time, due to the operation of the second electric blower 27, the room air is sucked from the third opening 53 with the filter 53a as shown by the two-dot chain line arrow, and passes through the second air passage 52, so that the device main body The natural convection promoting wind 55 is emitted from the second opening 22 located in the upper part of the air to generate the natural convection and promote the natural convection to improve the indoor heating state. In particular, the back side and the top side can be reduced, and safety can be improved without increasing the cost by adding components such as a heat shield for temperature countermeasures.

  Furthermore, since the natural convection promoting wind 55 during the radiant heating operation passes through the second air passage 52, no air flow is generated in the vicinity of the heating element 1a, and the second electric blower 27 is the first electric motor during the hot air heating operation. Since the air flow of the natural convection promoting wind 55 is reduced by operating at a lower rotational speed than the blower 26, the surface temperature of the heating element 1a can be maintained, and a decrease in the amount of radiation can be prevented. In addition, since the third opening 53 for taking in the natural convection promoting wind 55 is provided with a filter 53a, dust and dust that are being supplied are prevented from entering the inside of the main body, and the dust is in the second air path 52. It is possible to prevent abnormal overheating of the equipment and a reduction in heating capacity caused by clogging inside or adhering to the blades of the second electric blower 27 and reducing the air volume.

  Next, when the hot air heating operation is selected by the operation mode changeover switch 31 of the hot air heating operation, the first electric blower 26 operates while the second electric blower 27 is stopped, and the heating element 1a of the sheet heater 1 is energized. Then, the heating element 1a generates heat. Then, when the room air indicated by the solid line arrow is sucked from the third opening 53 and passes through the first air passage 51, heat is exchanged with the heating element 1a to become hot air 54, and the hot air 54 is in the first opening 21. The room where the user (not shown) is blown out is heated.

  At this time, since the first opening 21 through which the hot air 54 is blown out is located at the lower part of the apparatus main body, the heat generated by the heating element 1a can be transmitted farther, and warm from the feet in a short time from the start of operation. Heating with little vertical temperature unevenness can be performed. Moreover, the warm air 54 is taken in from the third opening 53 provided with the filter 53a to prevent the dust and dust being supplied from entering the inside of the main body, and the dust is clogged in the first air passage 51. It is possible to prevent abnormal overheating of the equipment and a reduction in heating capacity caused by reducing the air volume attached to the blades of the first electric blower 26.

  As described above, in the present embodiment, the user's will is to perform warm warm air heating operation that is excellent in immediate warmth and that suppresses indoor vertical temperature unevenness, and comfortable radiant heating operation without a feeling of airflow. The natural convection promoting wind 45 that promotes natural convection can be generated without reducing the amount of radiation during the radiant heating operation, and more comfortable radiant heating can be realized.

  Further, since the blade shape of the first electric blower 26 and the second electric blower 27 described above is a cross flow fan, the hot air 54 or the natural convection promoting air 55 can be generated uniformly and the heating feeling can be improved. Instead, the aircraft configuration can be made compact.

  In addition, although the heating element in each said embodiment uses the electric heater, it is not limited to this, The heat source which uses gas and oil as fuel, and others may be sufficient.

  As described above, the radiant heater according to the present invention can perform not only the radiant heating operation but also the hot air heating operation, and can realize comfortable heating with high immediate warmness while suppressing the indoor temperature unevenness and increase the temperature of the aircraft. It has a small and compact structure, promotes natural convection and can realize a comfortable radiant heating operation, and can be applied to radiant heaters for electricity and other heat sources.

The perspective view of the radiation heater in Embodiment 1 of this invention The longitudinal cross-sectional view of the radiation heater in Embodiment 1 of this invention Energization circuit diagram in Embodiment 1 of the present invention The perspective view of the radiation heater in Embodiment 2 of this invention The longitudinal cross-sectional view of the radiation heater in Embodiment 2 of this invention Energization circuit diagram in Embodiment 2 to Embodiment 4 of the present invention The longitudinal cross-sectional view of the radiation heater in Embodiment 3 of this invention The longitudinal cross-sectional view of the radiation heater in Embodiment 4 of this invention The exploded perspective view of the principal part of the conventional electric heater provided with far infrared rays

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Planar heater 1a Heating element 1b Glass plate 2 Top plate 3 Base 4 Side plate 5 Back plate 6 Air path 6a Hot air outlet 6b Air inlet 7 Operation part 8 Electric blower 11, 31 Operation mode changeover switch 12 Control means 21 1st 1 opening part 22 2nd opening part 23, 41, 50 Partition plate 24, 42, 51 1st air path 25, 43, 52 2nd air path 26 1st electric blower 27 2nd electric blower 40, 53 3rd opening part 40a, 53a filter

Claims (14)

A sheet heater provided with a heating element on a glass plate, and a control means for controlling the sheet heater, and a wind for heating a warm air that is connected to a warm air outlet and an air inlet on the back side of the sheet heater. Radiant heater with a road. A sheet heater provided with a heating element on a glass plate, a frame on which the sheet heater is mounted, a side plate that holds the side surface of the sheet heater on the frame, and an upper surface of the sheet heater that holds the upper surface. A top plate having a portion, a back plate that covers the back surface of the planar heater and is connected to a gantry, a side plate, and the top plate, and a control means for controlling the planar heater, and between the planar heater and the back plate A radiant heater in which an air passage for hot air heating that is connected to the hot air outlet and the air inlet is formed in the air passage, and an electric blower for hot air is provided in a part of the air passage. A planar heater in which a heating element is attached to a glass plate, a gantry on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the gantry, and an operation operation unit that retains the upper surface of the planar heater. A back plate connected to the base plate, the side plate, and the top plate, and a control means for controlling the planar heater, and between the planar heater and the back plate. A radiant heater in which an air passage for hot air heating that is connected to a hot air outlet and an air inlet is formed, and an electric blower is provided at a lower portion of the air passage. The radiant heater according to any one of claims 1 to 3, wherein the hot air outlet is disposed at a lower portion of the planar heater and the air suction port is disposed at an upper portion of the planar heater. A driving operation unit having an operation mode switching switch for switching between a radiant heating operation and a hot air heating operation is provided, and when the control means instructs a radiant heating operation from the operation operation unit, a signal generated by the operation mode switching switch The radiant heater according to any one of claims 1 to 4, which has a function of operating the electric blower in accordance with a signal generated by the operation mode changeover switch when the electric blower is stopped according to the instructions and the warm air heating operation is instructed. A planar heater provided with a heating element on a glass plate; a first opening provided below the planar heater; a second opening provided above the planar heater; A first air passage for warm air heating provided in communication with the first opening and the second opening, respectively, a second air passage for promoting natural convection during radiant heating, and a lower portion of the first air passage The first electric blower for hot air provided in the upper part, the second electric blower for promoting natural convection provided in the upper part of the second air passage, the planar heater, the first electric blower, and the second electric blower are controlled. A radiant heater comprising a control means for switching between hot air heating operation and radiant heating operation. A planar heater in which a heating element is attached to a glass plate, a gantry on which the planar heater is placed, a side plate that holds a side surface of the planar heater on the gantry, and an upper surface of the planar heater that holds the upper surface. And a back plate that covers the back surface of the planar heater and is connected to the base plate, the side plate, and the top plate, and has a first opening at a lower portion of the planar heater, and the planar heater. A first opening is formed between the planar heater and the partition plate, a first air passage is formed between the planar heater and the partition plate, and the partition plate and the back plate. A second air passage is formed between the first air passage and the second air passage, with the lower portion communicating with the first opening and the upper portion communicating with the second opening, respectively. Provided with a first electric blower, and a second electric blower provided above the second air passage. The first electric blower and the second electric blower are controlled to have a driving operation unit having an operation mode switching switch for switching between the radiant heating operation and the hot air heating operation, and the radiant heating operation is instructed from the driving operation unit. In this case, the first electric blower is stopped and the second electric blower is operated according to the signal issued by the operation mode changeover switch. When the warm air heating operation is instructed, the first electric blower is operated according to the signal issued by the operation mode changeover switch. A radiant heater having control means for operating one electric blower and stopping the second electric blower. A planar heater provided with a heating element on a glass plate; a first opening provided below the planar heater; a second opening provided above the planar heater; A first air passage for warm air heating provided in upper and lower communication with the first opening and the second opening, respectively, an upper end at the second opening, and a third opening for sucking the lower end A second air passage for promoting natural convection during radiant heating, a first electric blower for hot air provided in the lower portion of the first air passage, and a natural convection provided in the upper portion of the second air passage. A radiant heater including a second electric blower for promotion, and a control unit that controls the sheet heater, the first electric blower, and the second electric blower to switch between the hot air heating operation and the radiant heating operation. A sheet heater having a heating element attached to a glass plate, a frame on which the sheet heater is mounted, a side plate that holds a side surface of the sheet heater on the frame, and an upper surface of the sheet heater are held and operated. A top plate having an operation unit; and a back plate that covers a back surface of the planar heater and is connected to a gantry, a side plate, and a top plate, and includes a first opening at a lower portion of the planar heater, and the planar heater. A second opening is provided at the top of the plate, a third opening is provided in the back plate, a partition plate is provided between the planar heater and the back plate, and a hot air heater is provided between the planar heater and the partition plate. A first air path is formed, and a second air path for promoting natural convection at the time of radiant heating is formed between the partition plate and the back plate, and a lower portion of the first air path is a first opening, The upper part communicates with the second opening, the lower part of the second air passage is the third opening, and the upper part is the second opening. Operation mode switching for switching between a radiant heating operation and a hot air heating operation by communicating with each other and providing a first electric blower below the first air passage and a second electric blower above the second air passage. A driving operation unit having a switch, and when the radiant heating operation is instructed from the operation operation unit, the first electric blower is stopped and the second electric blower is operated according to a signal issued by the operation mode changeover switch. A radiant heater having control means for operating the first electric blower and stopping the second electric blower in accordance with a signal issued by the operation mode changeover switch when a warm air heating operation is instructed. A planar heater provided with a heating element on a glass plate; a first opening provided below the planar heater; a second opening provided above the planar heater; and air A third opening for suction, a first air passage for warm air heating provided with a lower portion communicating with the first opening and an upper portion communicating with the third opening, and an upper end at the second opening A second air passage for promoting natural convection during radiant heating in which the lower end portion is in communication with the third opening, and a first electric blower for hot air provided at a lower portion of the first air passage, Control means for controlling the hot air heating operation and the radiant heating operation by controlling the second electric blower for promoting natural convection provided in the upper part of the second air passage, and the planar heater, the first electric blower, and the second electric blower. And a radiant heater. A sheet heater having a heating element attached to a glass plate, a frame on which the sheet heater is mounted, a side plate that holds a side surface of the sheet heater on the frame, and an upper surface of the sheet heater are held and operated. A top plate having an operation unit; and a back plate that covers a back surface of the planar heater and is connected to a gantry, a side plate, and a top plate, and includes a first opening at a lower portion of the planar heater, A second opening is provided in the upper portion, a third opening is provided in the back plate, a partition plate is provided between the planar heater and the back plate, and a first for warm air heating is provided between the planar heater and the partition plate. A second air passage for promoting natural convection is formed between the partition plate and the back plate, and a lower portion of the first air passage is a first opening portion and an upper portion is a third opening portion. The lower part of the second air passage is communicated with the third opening, and the upper part is communicated with the second opening. A first electric blower at the bottom of the second air blower, a second electric blower at the top of the second air passage, and an operation operation unit having an operation mode changeover switch for switching between a radiant heating operation and a hot air heating operation, Further, when a radiant heating operation is instructed from the operation operation unit, the first electric blower is stopped and the second electric blower is operated in accordance with a signal issued by the operation mode changeover switch, and a hot air heating operation is instructed. Is a radiant heater having control means for operating the first electric blower and stopping the second electric blower in accordance with a signal generated by the operation mode changeover switch. The radiant heater according to any one of claims 8 to 11, wherein a filter is provided in the third opening. The radiant heater according to any one of claims 8 to 12, wherein the second electric blower has a rotational speed lower than that of the first electric blower. The radiation heater according to any one of claims 1 to 13, wherein the first electric blower or the second electric blower uses a cross flow fan.

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