JP2003161531A - Reflection type hot air heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflection type hot air heater which efficiently performs a heat exchange while reducing the temperature in a compact frame body. <P>SOLUTION: A combustion chamber 3 is provided on the upper part of a burner 2 arranged within the frame body 1 of this heater, a heat exchange chamber 4 is arranged continuously to the upper part of the combustion chamber 3, and a hot air outlet 1a is provided in front of the heat exchange chamber 4. The side part and back part of the combustion chamber 3 are surrounded with a curved reflector 9, and the radiation heat of the combustion chamber 3 is radiated forward by the reflector 9. A fuel supplier 6 and a combustion air supply fan 7 are housed in a combustion control equipment housing space 8 on the side of the burner 2, the combustion control equipment housing space 8 is separated from the space of the combustion chamber 3 by a reflector bottom plate 10, and a blower 5 is mounted to the back surface of the frame body 1 in a position capable of blowing air toward the combustion control equipment housing space 8. The air of the blower 5 is sent from the combustion control equipment housing space 8 to a blowing passage 11 surrounded with the reflector 9 and the side part and back part of the frame body 1, then passed through the heat exchange chamber 4, and blown out through the hot air outlet port 1a as hot air. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection type warm air heater capable of efficiently exchanging heat while reducing the temperature inside the frame while making the frame compact. It is a thing.

[0002]

2. Description of the Related Art A combustion chamber is provided above a burner arranged in a frame, and a heat exchange chamber is arranged continuously above the combustion chamber.
A reflection plate is attached so as to surround a side portion and a rear portion of the combustion chamber, and the reflection plate radiates the radiant heat from the combustion chamber from the front surface of the frame body to form a reflection type warm air heater.

A blower provided with a notch above the reflection plate surrounding the combustion chamber and arranged on the rear surface of the frame body is mounted at a position where the blower can directly blow air toward a high temperature part such as the combustion chamber or the heat exchange chamber through the notch. , Blowing cold air into the upper part of the combustion chamber and the heat exchange chamber,
The hot air that has undergone heat exchange flows out into the room from the outlet on the upper front side.

A burner, which is a heat source, is arranged in the frame body, and a fuel supply unit and a combustion air supply fan are arranged around the burner. These combustion control devices are connected to the burner and the combustion chamber. In order to protect from the temperature rise due to the effect of radiant heat, the blower attached to the back of the frame is placed so that part of the wind is directed toward the reflector, and the wind applied to the reflector is blown below the frame to surround the burner. Suppresses the temperature rise.

Further, the burner which is a heat source is surrounded by a heat shield plate, or a heat shield plate is provided between the combustion control device and the burner to prevent the radiant heat of the burner from directly hitting the combustion control device, thereby controlling combustion. There is also a method to prevent the equipment temperature from rising.

On the other hand, when the lateral flow fan is used as a convection fan instead of the propeller fan, the air flow of the lateral flow fan is thin and has a wide lateral width. The air is blown to the upper part of the reflecting plate from the upward air flow path along almost the entire surface of the above, and the hot air is blown forward from the hot air outlet through the heat exchange section.

Further, since the lateral flow fan can be installed in the lower frame body, the protrusion of the propeller fan on the rear surface of the frame body is eliminated, and only a thin and horizontally long air inlet is provided on the rear surface of the frame body, so that the rear surface of the frame body is neat. It can be summarized in the design.

[0008]

When installed and used in a room, the size of the product should be compact. Therefore,
More efficient heat exchange is required in the limited space inside the frame. Therefore, a blower provided on the back of the frame is installed at a position where air can be sent directly to the combustion chamber or heat exchange chamber, or a notch is provided in the upper part of the reflection plate to allow the air to flow to a high temperature part such as the combustion chamber. Although the wind is directed to the reflector plate and flowed downward, the heat from the blower may be reduced by rotating the air from the blower to the bottom of the frame for internal cooling. It is difficult to balance the top and bottom.

Further, there are various electric components and controllers vulnerable to high temperature in the frame, and troubles are likely to occur when the temperature in the frame becomes high. For this reason, the temperature inside the frame must be lowered, but the amount of air that hits the reflector and goes downward compared to the heat exchange part is small, and due to the effects of radiant heat from the reflector and burner, the temperature inside the frame becomes low. There are times when I cannot maintain.

Further, in order to protect the electric components from the radiant heat of the burner and the combustion chamber, there is a method of suppressing the temperature rise of the electric components by adding a heat shield plate to each component, but this requires a large number of components. Therefore, unless sufficient air is blown between the heat shields in the air duct inside the frame, the heat shield itself becomes high in temperature and emits radiant heat. It is quite difficult to cool the electrical components of.

On the other hand, when a lateral flow fan is installed instead of the propeller fan, a horizontally long blower is arranged behind the lower surface of the frame body and an air intake port is provided on the rear surface of the frame body so that the air flows from the lower part to the upper part of the frame. It forms an air flow path. With this structure, it is possible to blow a sufficient amount of air into the frame close to the blower using a wind vane, but in order to blow a strong flow velocity to the heat exchange part far from the blower, the structure of the air flow path and smooth A special cost is required to change the air flow direction to the front, which greatly increases the cost. Further, since a wide and thick air flow path is required on the back surface of the reflector, the depth of the warm air heater cannot be reduced, and it is difficult to make a compact frame body.

[0012]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and a warm air outlet 1 is provided in front of an upper portion of a heater frame 1.
a is provided, the combustion chamber 3 is provided above the burner 2 arranged in the frame 1, the heat exchange chamber 4 is continuously provided above the combustion chamber 3, and the blower 5 is arranged on the back surface of the frame 1. In the warm air heater, the combustion control device housing space 8 for housing the fuel supplier 6 and the combustion air supply fan 7 is formed on the side of the burner 2 in the frame body 1, and in the frame body 1. Is provided with a reflecting plate 9 which is located in a side portion and a back portion of the combustion chamber 3 in a curved shape while opening the front of the combustion chamber 3, and a partition with the combustion control device housing space 8 is provided under the reflecting plate 9. The reflector bottom plate 10 that also serves as
The blower 5 located on the back surface of the frame 1 is a reflector bottom plate 1
The combustion control device storage space 8 below 0 is attached to a blowable position, and the space formed by the curved reflector 9 and the side and back portions of the frame 1 is used as a blower path 11. The air sent to 8 is directed to the warm air outlet 1a through the air blowing path 11 and the vicinity of the heat exchange chamber 4.

Further, the burner 2 is arranged at the center of the frame body 1,
By attaching the blower 5 to the lower side of the rear surface of the frame 1, the cool air sent from the blower 5 goes to the combustion control device storage space 8 without being obstructed by the burner, and the combustion control device storage space 8 is cooled to a low temperature. Can be maintained.

Further, the blower 5 is attached to the lower side of the rear surface of the frame 1, and the reverse L for controlling the blower path 11 is provided so as to surround the upper part of the blower 5 in the frame 1 and one side surface of the frame 1 on the center side. By providing the character-shaped wind direction plate 12, a blower having a large propeller can be used.

Further, the burner 2 is arranged at the center of the frame body 1,
The blower 5 is attached to the lower side of the back surface of the frame body 1 and the front plate 1b in front of the combustion device storage space 8 of the frame body 1 is largely curved so that the blower 5 is blown into the frame body 1. Since the wind flows along the large curve of the front plate 1b and then flows from the air blowing path 11 to the heat exchange section, the cold air smoothly flows over the entire frame 1 without reducing the wind speed, and the warm air outlet 1
can be sent to a.

[0016]

In the present invention, the blower 5 located on the back surface of the frame 1 is attached to the combustion control device housing space 8 below the reflector bottom plate 10 at a position where it can blow air, so that the blower 5 is inserted into the frame body. Most of the sent cool air flows toward the combustion control equipment storage space 8, and the ambient temperature of the combustion control equipment storage space 8 which is increased by the radiant heat of the burner 2 and the reflector bottom plate 10 can be lowered.

Further, the wind that has passed through the combustion control equipment storage space 8 travels toward the combustion chamber 3 and the heat exchange chamber 4 via the air passage 11 between the frame 1 and the reflector 9 which is behind the frame 1. Flowing and exchanging heat, cooling the heat exchange chamber 4 and the combustion chamber 3,
The warm air blows out from the warm air outlet 1a in front of the frame 1 into the room.

On the other hand, the burner 2 is arranged in the center of the frame body 1,
By attaching the blower 5 to the lower side of the rear surface of the frame 1, the cool air from the blower 5 flows to one side of the combustion control device storage space 8 without going to the burner 2, so the wind of the blower 5 is
Combustion control equipment storage space 8 without being dispersed left and right inside
The combustion control device storage space 8 is designed to flow from one side rearward to the other side forward and along the inner surface of the front plate 1b of the frame body 1.
Go around.

Further, the blower 5 is attached to the lower side of the rear surface of the frame 1 to surround the upper side of the blower 5 inside the frame 1 and the side of the blower 5 on the center side of the frame 1 to regulate the air flow path. By providing the L-shaped wind direction plate 12, a part of the blower 5 is provided with the reflection plate 9
Even if it is located behind the fan or the diameter of the fan is increased, the wind blown from the blower 5 does not hit the reflection plate 9 and is not dispersed vertically and horizontally, and the total air volume is burned along the wind direction plate 12. It flows toward one side of the control device storage space 8.

Further, the blower 5 is attached to the lower side of the rear surface of the frame body 1, and the front plate 1b in front of the combustion equipment housing space 8 of the frame body 1 is formed into a semicircular shape which largely draws an arc. Then, the wind sent from the rear portion of the frame body 1 to the front surface flows along the curved surface of the front plate 1b without reducing the flow velocity.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure will be described with reference to the drawings showing an embodiment. 1 is a frame of a heater, 2 is a burner arranged in the center of the frame 1, 3 is a combustion chamber provided above the burner, 4 is a burner. Is a heat exchange chamber that is connected to the upper part of the combustion chamber 3 and has two flat box-shaped tiers that have a large heat radiation area. The combustion chamber 3 of the frame 1 and the front of the heat exchange chamber 4 have large openings. ing. Reference numeral 1b is a front plate of the frame body 1 arranged in front of the burner 2, and 1c is a guard arranged in front opening portions of the combustion chamber 3 and the heat exchange chamber 4.

Reference numeral 9 is a reflector located between the frame 1 and the combustion chamber 3 and mounted so as to surround the front side of the combustion chamber 3 in a curved shape while opening the front side of the combustion chamber 3. Reflector 9
Radiates radiant heat from the combustion chamber 3 forward. Reference numeral 10 denotes a reflector bottom plate provided below the reflector 9 and also serves as a partition plate between the outside of the combustion chamber 3 and the outside of the burner 2 and protects the space outside the burner 2 from the radiant heat of the combustion chamber 3. is doing.

Reference numeral 5 denotes a blower composed of a propeller fan arranged on the rear surface of the frame 1 behind the reflection plate 9 and reference numeral 1a denotes a warm air outlet provided in front of the heat exchange chamber 4. When the blower 5 is operated, indoor air is discharged. Is blown toward the heat exchange chamber 4 in the frame 1, passes through the heat exchange chamber 4 and becomes hot air, and the hot air outlet 1
It is blowing out from a.

Reference numeral 7 is a combustion air supply fan for supplying combustion air to the burner 2, 6 is a fuel supplier for supplying fuel to the burner 2, 6a is an oil feeding pipe for sending fuel from the fuel supplier 6 to the burner 2, and 13 is A controller 8 of the heating device is a space between the frame 1 and the burner 2, and is a combustion control device storage space that stores the fuel supply device 6, the combustion air supply fan 7, the controller 13, and the like. 8 is a reflector bottom plate 1
It is separated from the space above the burner 2 by 0.

When the operation of the heater is started, the fuel sent to the burner 2 is ignited by an ignition device (not shown), and the air supplied from the combustion air supply fan 7 starts combustion in the burner 2 to generate a combustion flame. Reaches the combustion chamber 3, and the radiant heat generated from the combustion chamber 3 is radiated to the front of the frame 1 to perform heat ray radiation type heating. Further, the combustion gas generated by the combustion exchanges heat with the air sent from the blower 5 when passing through the heat exchange chamber 4, and the hot air becomes warm air from the warm air outlet 1a on the front surface of the frame body 1. Is blown out.

The hot air heater of the embodiment is an intake / exhaust type hot air heater that takes in combustion air from the outside and exhausts combustion exhaust gas to the outside. Reference numeral 14 is an L-shaped heat exchange chamber. 4, an exhaust pipe extending downwardly from the end 4 to the back plate of the frame 1, and 15 is an air supply pipe connected to the combustion air supply fan 7. The exhaust pipe 14 and the air supply pipe 15
The end of is further extended outside the frame 1 and opened to the outside by an intake / exhaust top (not shown).

In the general reflection type warm air heater as described above, the blower 5 provided on the back surface of the frame 1 is placed at the center of the upper end of the reflection plate 9 for more efficient heat exchange. It is installed so that the cool air flows directly into the combustion chamber 3 and the heat exchange chamber 4, and the upper end of the reflection plate 9 is lowered or a notch is provided in the central part so that the high temperature part such as the combustion chamber 3 is provided. A lot of wind is also made to flow.

Further, a burner 2 having a high temperature is arranged in the frame body 1, and a combustion control device housing space 8 around the burner 2 has a high temperature such as a fuel supply device 6, a combustion air supply fan 7 and a controller 13. Since there is a weak control device, a part of the air blown from the blower 5 into the frame 1 is applied to the reflector 9 so that the wind flows below the frame 1, and the space around the burner 2 is cooled to reduce the temperature. The rise is suppressed.

In this way, the air from the blower 5 is divided within the frame 1 to perform heat exchange and cooling inside the frame, but it is difficult to balance these two uses, and the product is compact. In some cases, the size of the blower 5 and the heat exchange section should be smaller, which makes it more difficult to balance the air volume.

Further, in order to protect the control equipment from the radiant heat of the burner 2, there is also a method of suppressing the temperature rise of the control equipment by adding a heat shield plate for each part. If sufficient air is not blown between the heat shield plates of the heat shield plate, the heat shield plate itself becomes high in temperature and emits radiant heat.
There is also a problem that it is quite difficult to cool the control equipment inside the frame by diverting the wind from the, and the cost is increased because the number of parts increases.

The present invention proposes a structure of a reflection type warm air heater capable of efficiently performing heat exchange and cooling the inside of the frame 1 in order to make the size of the product as compact as possible. By lowering the attachment position of the blower 5 on the rear surface of the frame 1 to a position where direct air can be blown toward the combustion control device storage space 8 below the reflector bottom plate 10, the cool air sent from the blower 5 into the frame 1 can be removed. Most of the structure is such that it flows toward the combustion control equipment storage space 8.

Reference numeral 11 denotes a substantially triangular air blowing path composed of the reflecting plate 9, the side plate of the frame 1 and the rear plate, and the air sent from the blower 5 to cool the combustion control device housing space 8 is sent by this air blowing. The air flow that has passed through the passage 11 is directed to the upper side of the frame 1 while cooling the side plates and the rear plate of the frame 1, and further, the air flow that has lost its place in the upper part of the air passage 11 changes its direction along the heat exchange chamber 4. Flow in the air to perform heat exchange, and the hot air outlet 1 in front of the frame 1
The hot air flows out from a.

Therefore, cold air flows through the combustion control device storage space 8 which serves as an air flow path before heat exchange to reliably cool various control devices, and this air passes through the air passage 11 to exchange heat. Therefore, it is not necessary to divide the airflow to balance the airflow as in the case of disposing the blower 5 on the upper part in the related art, and change the rotation speed of the blower 5 according to the heat generation amount of the heating device to change the airflow. However, the combustion control device storage space 8 could be reliably cooled. In addition, since control devices that use electronic parts cannot withstand high temperatures, many heat shield plates have been used in the past to reduce the temperature, but even with such control devices, low temperature can be achieved without using heat shield plates. Can now be maintained.

When using a cross flow fan, the reflector 9
Although there is a problem that the width of the frame body 1 becomes large because a wide air flow path is required in the back part of the fan, the air flow path 11 of the present invention does not need to be attached to the back part of the reflector 9 and the reflector 9 and the frame 1
Since it can be formed in a substantially triangular shape composed of the side plate and the rear plate, the depth of the frame body 1 can be reduced even if the structure is such that the air is blown upward from below. 1 could be made compact.

Further, the burner 2 is arranged in the center of the frame body 1,
By attaching the blower 5 to the lower side of the rear surface of the frame 1, the cool air from the blower 5 flows to one side of the combustion control device storage space 8 without going to the burner 2, so the wind of the blower 5 is
Combustion control equipment storage space 8 without being dispersed left and right inside
The combustion control device storage space 8 is designed to flow from one side rearward to the other side forward and along the inner surface of the front plate 1b of the frame body 1.
It was possible to smoothly guide the blown air toward the heat exchange chamber 4 after passing through the combustion control device housing space 8.

Reference numeral 12 indicates the upper side of the blower 5 in the frame 1 and the frame 1.
This is an inverted L-shaped wind direction plate that surrounds the side of the blower 5 on the center side and restricts the air flow path 11 reaching the reflection plate 9 at the front. By providing this wind direction plate 12, when the diameter of the propeller fan is large, Even if a part of the fan hits the reflection plate 9 depending on the mounting position of the blower 5, the wind sent from the blower 5 does not hit the reflection plate 9 and are dispersed vertically and horizontally,
The total air volume can flow along the wind direction plate 12 toward the combustion control device housing space 8.

If the front plate 1b in front of the combustion device housing space 8 of the frame 1 is formed into a largely curved shape, the wind of the blower 5 smoothly flows along the curved surface of the front plate 1b.
The resistance in the blower path 11 is reduced, and the effect when the attachment position of the blower 5 is defined as described above can be further enhanced, and the blown air can flow toward the heat exchange chamber 4 while maintaining a strong flow velocity. .

[0038]

As described above, by lowering the mounting position of the blower 5 located on the back surface of the frame body 1, the lower side of the frame body 1 is surely cooled by the total air volume, and then the wind flows above the frame body 1. The heat exchange is performed by the heat transfer, and the air flow path 1 in the frame 1
Since there is only one, the air flow path 11 does not collide with the inside of the frame 1 and the flow of the air is not obstructed, and the inside of the frame 1 can be cooled and heat exchange can be performed while maintaining a strong air volume. It became so.

In this way, the ventilation path 11 in the frame 1 is set to 1
This makes it possible to effectively use the limited air volume, and it becomes possible to make products more compact.

Further, by mounting the blower 5 on the lower side of the back plate of the frame body 1, the cool air from the blower 5 flows to one side inside the frame body 1 so as to be along the inner surface of the front plate 1b of the frame body 1. Since the combustion control device housing space 8 is made to go around once, there is no resistance due to the dispersion of the wind, and the frame 1 can flow more smoothly.

In addition, above the blower 5 in the frame 1 and the frame 1
By providing the inverted L-shaped wind direction plate 12 that surrounds the side of the blower 5 on the center side and regulates the blower path 11, a part of the fan may be partially removed due to a structural problem such as a large fan diameter or a mounting position. Even when it hits the reflection plate 9, the wind sent from the blower 5 is not dispersed, and the total air volume is 12
Can flow toward the combustion control equipment storage space 8.

Further, by making the front plate 1b of the frame body 1 into a largely curved shape, the resistance of the air flow path 11 in the frame body 1 can be further suppressed, and the flow of the wind in the entire frame body 1 can be made smoother. be able to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a heater showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view taken along the line AA of the embodiment of FIG. 1 of the present invention.

FIG. 3 is a vertical cross-sectional view taken along the line BB of the embodiment of FIG. 1 according to the present invention.

[Explanation of symbols]

1 frame 1a Hot air outlet 1b front plate 2 burners 3 Combustion chamber 4 heat exchange room 5 blower 6 Fuel supplier 7 Combustion air supply fan 8 Combustion control equipment storage space 9 Reflector 10 Reflector bottom plate 11 Blower route 12 Wind direction plate

Claims (4)

[Claims] 1. A warm air outlet 1 is provided in front of an upper portion of a heater frame 1.
a is provided, the combustion chamber 3 is provided above the burner 2 arranged in the frame 1, the heat exchange chamber 4 is continuously provided above the combustion chamber 3, and the blower 5 is arranged on the back surface of the frame 1. In the warm air heater, the combustion control device housing space 8 for housing the fuel supplier 6 and the combustion air supply fan 7 is formed on the side of the burner 2 in the frame 1, and in the frame 1 Is provided with a reflection plate 9 which is located in a side portion and a back portion of the combustion chamber 3 in a curved shape while opening the front side of the combustion chamber 3, and below the reflection plate 9, the combustion control device storage space 8 is provided.
A reflector bottom plate 10 also serving as a partition is provided, and the blower 5 located on the back surface of the frame 1 is attached to a combustion control device storage space 8 below the reflector bottom plate 10 at a blowable position and curved. The space formed by the reflection plate 9, the side portion and the back portion of the frame body 1 is used as the ventilation path 11, and the combustion control device storage space 8 is provided.
The reflection type warm air heater characterized in that the air sent to the air blows to the hot air outlet 1a through the air blowing path 11 and the vicinity of the heat exchange chamber 4. 2. The reflection type warm air heater according to claim 1, wherein the burner 2 is arranged in the center of the frame body 1, and the blower 5 is attached to the lower side of the rear surface of the frame body 1. 3. The blower 5 is attached to the lower side of the rear surface of the frame 1 and the blower path 11 is regulated by surrounding the upper side of the blower 5 inside the frame 1 and the side of the blower 5 on the center side of the frame 1. An inverted L-shaped wind direction plate 12 is provided.
Reflective hot air heater described. 4. The burner 2 is arranged in the center of the frame body 1, the blower 5 is attached to the lower side of the rear surface of the frame body 1, and the front plate 1b in front of the combustion equipment housing space 8 of the frame body 1 is largely curved. The reflective hot air heater according to claim 1, wherein the reflective hot air heater has a shape.