JP3177090U - Stove fan motor protection device - Google Patents

Abstract

A protection device for a fan motor of a stove that automatically opens a part of a suction duct when the temperature of hot air flowing through the suction duct or the installation part of a breaker exceeds a predetermined value is provided.
A breaker that is mounted in a suction duct and melts at a predetermined temperature, and an open door 43 that is automatically opened when the breaker is fused and separated and is installed in a part of the suction duct. The breaker includes a fusing part and two supporting parts 45B that support the fusing part. The fusing part is composed of two metal plates 45a and 45b.
[Selection] Figure 4

Description

The present invention is a technology for protecting a fan motor in a suction duct attached to various stoves such as a wood stove, an oil stove, etc., and the hot air temperature flowing through the suction duct or the installation part of the breaker has a predetermined value. The present invention relates to a technique for automatically opening a part of a suction duct when the pressure exceeds the limit.

A first example of this type of conventional technique is shown in FIG. This will be described. A closed lid body 2 is provided at an upper opening of a cylindrical furnace body 1 to which soot is injected and burned, and the interior space of the furnace body 1 is partitioned in the furnace body 1 vertically. A partition 3 is provided. The furnace body 1 is formed with a plate-like receiving portion 4 at a position slightly floating from the bottom surface in the furnace body 1, and a rooster 5 is disposed at the center of the receiving portion 4. In addition, a large number of ventilation holes are formed on the bottom surface of the furnace body 1 below the rooster 5 as air supply parts 6 for supplying air from outside the furnace body 1 into the furnace body 1. The air to be supplied is supplied to the combustion space portion 7 through the rooster 5. Further, an ash receiving portion 9 for receiving and storing the ash of firewood burned in the furnace body 1 is provided in the bottom space portion 8 below the rooster 5. Further, the ash receiving portion 9 is configured to be slidably provided outside the furnace body 1 by operating a handle 10 attached to the front surface and to be slidable out of the furnace body 1, and stored in the ash receiving portion 9. So that the processed ash can be processed easily.

Further, as a second example in the prior art, there is a technique shown in FIG. Describing this, FIG. 9 shows an example of a wood-burning stove with a flue gas filtering function. This wood-burning stove 11 with a flue gas filtering function includes a sealed wood-burning stove 12 installed in an indoor ER1, and this wood heating stove. 12 is composed of a flue 13 that guides the flue gas generated when burning soot as fuel to the outdoor ER 2, and a chamber-type heater flue gas filtering device 14 attached to the flue 13. . The wood-burning stove 12 as an indoor installation type heater is configured such that the wood-burning furnace body 15 is filled with firewood and burned, thereby heating the indoor ER1. Incidentally, this furnace body 15 has an air supply part for supplying air from the outside of the furnace body 15, a partition part (not shown) for partitioning the inside of the furnace body 15, etc., and an upper side formed by the partition part. In the secondary combustion chamber (not shown) in the space, unburned gas generated in the primary combustion chamber in the lower space is burned and burned in the furnace body 15 by an ash receiving portion (not shown) arranged in the bottom space. It is designed to receive and store the ash of the cocoons. A catalyst is provided in the secondary combustion chamber, and unburned gas is burned using this catalyst. In addition to this configuration, the root portion 16 of the flue 13 is connected to the furnace body upper part 15A, and the flue gas generated in the furnace body 15 is guided to the flue 13. The flue 13 extends substantially vertically upward from the furnace body 15 to a predetermined height, and then bends to the wall H1 side of the house H so as to pass through the wall H1 so that the tip 17 is located at the outdoor ER2. The heater flue gas filtering device 14 is attached to a portion that is formed and extends substantially horizontally. The heater flue gas filtering device 14 includes a flue gas filtering unit 18 provided in the indoor ER1, and a flue gas fan unit 20 supported by the support column 19 in the outdoor ER2 and attached to the tip 17 of the flue 13. The smoke exhaust fan unit 12 is supplied with electric power from an outlet connected to a commercial AC power supply via a plug (not shown). As a result, the heater flue gas filtering device 14 rotationally drives the exhaust fan 21 in the flue gas fan unit 20, whereby the flue gas in the furnace body 15 passes through the flue gas 13 through the flue gas filter 13. The smoke exhaust fan unit 20 can be allowed to pass through and discharged to the outdoor ER2.

Japanese Patent Laid-Open No. 2000-046334 Japanese Patent Laid-Open No. 2006-281077

Since the conventional technology has the above configuration, the following problems existed.
That is, according to the first example in the prior art, there is no fan device, and no technology for protecting the fan device is disclosed. Further, according to the second example in the prior art, the rotation operation of the discharge fan 21 of the smoke exhaust fan unit 20 provided in the smoke exhaust filter device 14 for a heater is stopped when there is an abnormality such as a power failure. However, there is a problem that the smoke evacuation filter 14 for the heater cannot be led to the outdoor ER2, and there is a concern that the smoke evacuation filter 14 for the heater is abnormally hot. there were.
The present invention has been devised to solve such problems.

The present invention has been made to solve such a problem, and has the following configuration.
That is, according to the invention of claim 1, a stove body part, and an outer case which encloses the stove body part and has a predetermined space and is provided with a hot air discharge hole for discharging hot air to the skirt part, A metal frame placed on the upper surface of the outer case, a suction duct disposed adjacent to the metal frame and suspended by a support rod fixed to the metal frame, and the suction duct The housed fan motor, a substantially mountain-shaped roof plate fixed to the upper surface of the stove main body, a thermo sensor fixed to the substantially mountain-shaped roof plate, and driving of the fan motor by a signal from the thermo sensor In a configuration comprising a temperature controller controlled and fixed to the outer case, a breaker attached in the suction duct and fused at a predetermined temperature, and automatically opened by the action of the breaker and the Installed in part of the suction duct Characterized in that and a the open door.

According to the second aspect of the present invention, in the fan motor protection device for the stove according to the first aspect, the breaker mounting hole is disposed in the suction duct adjacent to the open door. It is characterized by.

Since the fan motor protection device for a stove according to the present invention has the above-described configuration, the following effects can be obtained.
In other words, according to the first aspect of the present invention, there is provided a stove body portion, an outer space that encloses the stove body portion and has a predetermined space, and is provided with a hot air discharge hole for discharging hot air to the skirt portion. A case, a metal frame placed on the upper surface of the outer case, a suction duct disposed adjacent to the metal frame and suspended by a support rod fixed to the metal frame, and the suction A fan motor housed in a duct, a substantially mountain-shaped roof plate fixed to the upper surface of the stove body, a thermo sensor fixed to the substantially mountain-shaped roof plate, and a signal from the thermo sensor, In a configuration comprising a temperature controller that controls driving and is fixed to the outer case, a breaker that is mounted in the suction duct and blows at a predetermined temperature, and is automatically opened by the action of the breaker. And part of the suction duct Providing stove fan motor protection apparatus characterized by having a installed an open door.
With such a configuration, the hot air flowing through when the fan motor stops due to a power failure, an earthquake, or the like, or the suction duct is blown if the hot air or the suction duct reaches a predetermined value such as 72 ° C or higher. Since the opening door is automatically opened, the fan motor and other devices in the suction duct are protected, and there is an effect that there is no burning or failure.

According to the invention described in claim 2, the fan motor protection of the stove according to claim 1, wherein the breaker mounting hole is disposed in the suction duct adjacent to the open door. Providing equipment.
With such a configuration, in addition to the effect of the device claimed in claim 1, there is an effect that the breaker can be easily attached by a human hand and can be newly or replaced freely.

It is a front view which shows the stove which concerns on this invention, and shows embodiment. It is a side view which shows the stove which concerns on this invention, and shows embodiment. FIG. 3 is an enlarged perspective view showing an embodiment of a fan motor protection device for a stove according to the present invention, and is a cross-sectional view taken along the direction of the arrow EE in FIG. 2. FIG. 4 is an enlarged perspective view showing a state where the connection part of the breaker is melted and the automatic opening door is opened in FIG. 3. It is a figure which shows the structure of the reverse drive member with which the fan motor protection apparatus of the stove concerning this invention was equipped. It is a figure which shows the structure and operation | movement of the breaker with which the fan motor protection device of the stove concerning this invention was equipped, (a) is a front view, (b) is a right view, (c) is in (b). It is a figure which shows the expanded sectional view of the P part which cuts, and the state of the fusing of the connection part of a circuit breaker. It is a figure which shows the structure of the breaker mounting hole with which the fan motor protection device of the stove concerning this invention was equipped, Comprising: (a) is a front view, (b) It is right sectional drawing which shows the state installed in the suction duct. It is a perspective view which shows the 1st example in a prior art. It is a perspective view which shows the 2nd example in a prior art.

Hereinafter, an embodiment of a fan motor protection device for a stove according to the present invention will be described in detail with reference to FIGS.
Prior to the description of the fan motor protection device for a stove according to the present invention, the stove A will be described with reference to FIGS.
The stove A generally has a stove body 22, an outer frame case 23 for housing the stove body 22, a suction duct 24 installed above the outer frame case 23, and the stove body 22 as, for example, fuel. And an exhaust pipe 28 for discharging combustion gas, exhaust gas or smoke generated by burning soot to the outside of the house.

Here, the said stove main-body part 22 forms the box shape which consists of a hot-rolled steel plate and a hot-rolled striped steel plate about 5 mm thick, for example, by fillet welding. One surface of the stove main body 22 forms an inclined front surface 22a, and a left door 22b and a right door 22c, which will be described later, are disposed on the front surface 22a. A rectangular shape for supplying thinned wood of conifers such as cedar and pine as a fuel and other bushes to the combustion chamber (not shown) on the front surface 22a with the left and right doors 22b and 22c being opened. 22d. The opening 22d is a fillet welded to the front surface 22a of the stove body 22 by cutting and removing a hot-rolled steel plate or a hot-rolled striped steel plate having a predetermined size into a frame shape.

A left door 22b and a right door 22c are provided outside the opening 22d. The left and right vertical ends of the opening 22d are supported by two hinges 22e and 22e so that the opening 22d can be freely opened and closed. Yes. When the left door 22b and the right door 22c are closed, the butted portion of the left door 22b and the right door 22c and the overlapping portion of the left door 22b, the right door 22c and the opening 22d are closed with almost no gap. In addition, the left door 2 is provided with handles 22f, 22f obtained by hot or cold bending a steel rod into a substantially L shape.
2b, which is provided on the right door 22c, and the base ends of the handles 22f and 22f are welded to the lower surfaces of the left door 22b and the right door 22c, respectively.

A rotatable disk 25 having an air introduction port 25a formed with a large number of circular holes for introducing air into the combustion chamber in the substantially central part of the left door 22b and the right door 22c, and this rotatable A disk-shaped fixed air conditioning plate (not shown) is provided on the back surface of the disk 25 and provided with sufficient circular holes to cover the air inlet 25a. The disk-shaped fixed air conditioning plate can be replaced by providing a circular hole in the left door 22b and the right door 22c. The rotatable disk 25 is rotatably mounted by center shaft members 25b and 25b.

The disk-shaped fixed air conditioning plate has a plurality of air inlets (not shown) formed of circular holes having the same shape and the same arrangement as the plurality of air inlets 25a drilled in the rotatable disk 25. ing. Further, the base ends of the handles 25c, 25c are welded to the outer edge portions of the rotatable disks 25, 25. The handles 25c and 25c and the handles 22f and 22f are suitable as handles because the surfaces thereof do not slip if they are formed of steel bars for reinforced concrete or reinforced concrete recycled steel bars whose outer peripheral surfaces are formed with irregularities.

The upper surface 22k of the stove body 22 is made of a steel plate, and a substantially mountain-shaped or triangular roof plate 27 is placed and fixed at the center from the left end to the right end of the upper surface 22k. The roof plate 27 may be formed integrally with the upper surface 22k. As will be described later, the roof plate 27 does not directly contact the intake air fed from the suction duct 24 with the upper surface 22k of the stove body 22 and the left and right side surfaces 22g and 22h of the stove body 22 and the outer frame. Smoothly flow between the case 23 and the case 23. Therefore, the heat transfer efficiency of the stove body 22 is enhanced without bringing cold air from the outside into contact with the stove body 22.

2, the lower end of the exhaust pipe 28 is connected to an exhaust pipe box 28a fixedly disposed on the rear surface 22j of the stove body 22, and the stove body 22 and the exhaust pipe 28 are communicated with each other. Reference numeral 29 denotes a leg that supports the stove body 22 and, for example, four legs are arranged.

A damper 28b for controlling the exhaust gas and the amount of combusted smoke is interposed at an intermediate position of the exhaust pipe 28. The damper 28b is made of, for example, black heat-resistant steel and is formed of a cylindrical body having the same dimensions as the exhaust pipe 28. The damper 28b is provided with an adjustment plate 28c therein, and an operator operates a lever disposed on the surface of the exhaust pipe 28. Thus, the opening degree of the adjusting plate 28c is controlled.

The outer frame case 23 is made of, for example, a steel square or bar that is outside the stove body 22 and is framed and constructed with a predetermined distance from the left side 22g and the right side 22h of the stove body 22. The stove body 22 is encapsulated by fixing and pasting the frame body with tightening parts such as screws. Outer frame casing 23 is composed of the same material as the stove body 22, at the front shown in Figure 1 to set the lower portion in the width Kyocho L ₂ wider length L _1, for example, upper portion. On the left side and right side of the outer frame case 23, for example, as shown in FIG. The lower part of the outer frame case 23 is so-called left and right skirts 22i and 22i of the outer frame case 23, and hot air discharge holes 22m and 22m are formed in these portions, respectively.

Cylindrical bodies 22n and 22n are fixed around the outer sides of the hot-air discharge holes 22m and 22m, and base ends of hot-air ducts 30 and 30 laid on, for example, a farm field are fixed to the cylindrical bodies 22n and 22n. The hot air ducts 30 and 30 are not necessarily limited to two, and may be configured by a large number or a single. The hot-air ducts 30 and 30 may be members that flow down from the outer frame case 23 and flow into the field. For example, a heat-insulating flexible duct having a predetermined diameter, a vinyl flexible duct, an extendable aluminum flexible duct, a cool General-purpose products such as wire flexible ducts and galvanized steel sheet flexible ducts are used.

Reference numeral 31 denotes a hot air introduction valve, which is disposed and fixed on the front surface of the outer frame case 23 as shown in FIG. 1, for example, and communicates the inside of the outer frame case 23 and the combustion chamber with the hot air in the outer frame case 23 as required. Flow to combustion chamber. The hot air introduction valve 31 includes a first pipe 31a inserted into the outer frame case 23, a second pipe 31b inserted into the combustion chamber of the stove body 22, and a lever 31c for opening and closing the valve for controlling the amount of hot air. It consists of. When the soot as a fuel is ignited and the soot combustion efficiency is poor, the hot air introduction valve 31 turns on a blower fan switch described later to drive the suction duct 24 and operates the lever 31c to open the valve to open the outer frame case 23. The air inside is introduced into the combustion chamber. 32 is an outlet for taking out black charcoal and incineration residue generated after the fuel is burned.

The suction duct 24 sends the air heated by the stove body 22 to the hot air ducts 30 and 30 as hot air. Here, the suction duct 24 includes, for example, a mixed flow duct 24A and an open door installation duct 24B connected to the mixed flow duct 24A as shown in FIG. The mixed flow duct 24A is made of iron and accommodates a fan motor 33 by connecting a rear casing having the same shape as a cylindrical front casing.

The suction duct 24 is made of a flexible metal cylinder and has functions of heat resistance and heat resistance. Therefore, it can be made of aluminum or iron. As shown in FIG. 2, when viewed from the side, it is curved in a substantially U shape. And the suspension metal fittings 34 and 34 are fixed to the both side surfaces of the front casing and the rear casing of the mixed flow duct 24A, and the support bars 34a and 34a are engaged with the suspension metal fittings 34 and 34, respectively. The base ends of the support bars 34a and 34a are fixed to a metal frame base 35, respectively.

As can be seen from FIG. 1, the metal frame base 35 is fixed to the upper surface 22 e of the outer frame case 23 in the front direction of the stove A, but is not limited to this, and the left side direction or right side direction or back direction of the stove A The outer frame case 23 may be installed on the upper surface 22l. For example, the upper portion of the metallic frame base 35 is constituted by a hollow frame body 35a having a substantially rectangular shape and a leg portion 35b having a substantially L-shaped side surface. 36 shown in FIG. The terminal is accommodated and connected to the motor drive switch 37 installed on the outside, that is, on the side surface portion of the outer frame case 23 by the power line 38. The motor drive switch 37 is connected to an AC power source.

The leg portion 35b of the metal frame base 35 has, for example, a substantially longitudinal groove-like or oblong-like adjustment hole, and a height adjusting tightening part for locking and fixing to the adjustment hole, that is, a bolt and a nut. The case 23 is fixed to the front surface or the left and right side surfaces. The height of the mixed flow duct 24A is adjusted to control the intake air intake direction. Reference numeral 39 denotes an anti-tilt material fixed to either the left or right side surface of the outer frame case 23.

Further, as shown in FIG. 2, a temperature controller 40 is installed at a position adjacent to the motor driving switch 37 to start and stop the fan motor 33. The temperature controller 40 includes a case 40a, a dial-type temperature setting unit 40b attached to the surface of the case 40a, a thermo switch (not shown) built in the case 40a, and the roof plate 27 connected to the thermo switch. And a thermosensor 41 fixed on the surface. As shown in FIG. 1, the thermosensor 41 is inserted into a small cylinder formed of the same material as the roof plate 27 and fixed to the surface thereof. Then, the thermo sensor 41 is operated when the temperature of the roof plate 27 is within a range of a set temperature, for example, 15 ° C. to 126 ° C., the thermo switch is turned on, and the fan motor 33 is rotated. Thus, the suction duct 24 is operated, and the air in the house 26 passes through the mixed flow duct 24A and the open door installation duct 24B, and hot air flows into the space S between the stove body 22 and the outer frame case 23 from one side. Flows in the B direction from the other in the direction of the arrow C, and is discharged to the outside of the stove A from the directions of the arrow D and F, respectively.

Next, a stove fan motor protection device according to the present invention will be described.
Reference numeral 43 denotes an open door, that is, an automatic open door installed in a part of the open door installation duct 24B of the suction duct 24. The automatic opening door 43 is a door in which a part of the opening door installation duct 24B is cut out and the cutout part is closed and opened, and is constituted by a substantially arc-shaped plate made of the same material as the suction duct 24. When this is closed, the opening 24a is completely closed and is set flush with the open door installation duct 24B. The opening 24a is substantially the same as the shape of the upper surface of the automatic opening door 43, and the shape shown in the figure is a rectangular shape, but a semicircular shape or other shapes can also be applied. The automatic opening door 43 includes a reverse drive member 44. The reversing drive member 44 includes a hinge 44b formed by a combination of two plates that rotate back and forth about a shaft 44a via two plate members 44i shown in FIG. 5, and a spring spring that performs a reversing operation within the hinge 44b. 44c. The spring spring 44c is wound around the shaft 44a.

One plate 44d of the hinge 44b is formed on the outer surface edge 24b of the opening 24a drilled in the opening door installation duct 24B and the other side plate 44e is a base end 43a of the automatic opening door 43 as shown in FIG. The fastening parts 44f are fixed to the inner wall surface of the opening door installation duct 24B and the inner wall surface of the base end part 43a of the automatic opening door 43. It is fixed via two plate members 44i. The one plate 44d is locked and fixed to one end 44g of the spring spring 44c and the other plate 44e is fixed to the other end 44h of the spring spring 44c, respectively. The reversing force of the spring spring 44c interposed in the shaft 44a is shown in FIG. As shown in FIG. 5, the opening 24a is always opened.

Narrow strips 42 and 42 are fastened with tightening parts (not shown) such as rivets to two end surfaces forming the arc of the automatic opening door 43, that is, the left and right ends shown in FIG. Further, the band plates 42, 42 may be formed such that the left and right end portions of the automatic opening door 43 are wider than the opening portion 24a and the inner surfaces thereof are stepped. When the automatic opening door 43 is made of the same material as the automatic opening door 43 or a different metal material, and the automatic opening door 43 is closed to the opening door installation duct 24B, it overlaps and adheres to the outer surface of the opening door installation duct 24B. The intake air flowing through the open door installation duct 24B does not leak from the periphery of the opening 24a.

Reference numeral 45 denotes a circuit breaker, which is installed in the suction duct 24 and includes a fusing part 45A and two supporting parts 45B that support the fusing part 45A as shown in FIG. For example, as shown in FIG. 6B, the fusing part 45A is composed of two metal plates 45a and 45b, and both are fixed and connected with a solder solution 45c as shown in FIG. 6C. This portion is a connection portion of the blocking tool 45. For example, an injection hole 45d of a mortar-shaped solder solution 45c is formed in one or both of the metal plates 45a and 45b. Pour and solidify. At this time, the solder solution 45c permeates the contact portions of the metal plates 45a and 45b through the injection hole 45d. When the temperature of 72 ° C. or higher is reached, for example, at the insertion portion of the breaker 45, the metal plates 45a and 45b of the breaker 45 are fused and separated as shown in the right view of FIG.

On the other hand, the other support parts 45B and 45B are constituted by, for example, bolts 45e and 45e, for example, and one ends thereof are connected and fixed to the one and other metal plates 45a and 45b by nuts 45f and 45f, respectively. Also, the other ends of the bolts 45e and 45e are provided with butterfly screws 45g and 45g as fixing parts, respectively, and one support part 45B, that is, the other end of the bolt 45e is automatically opened by the butterfly screw 45g as shown in FIG. The other support part 45B, that is, the other end of the bolt 45e, is fixed to the inner wall surface of the front end portion 43b of the door 43, and is also fixed to the adjacent portion of the opening 24a as the open door installation duct 24B with a thumbscrew 45g.

Next, a procedure for attaching the breaker 45 will be described.
One and the other metal plates 45a and 45b of the breaker 45 are connected and fixed in advance by a joining operation, and the support component 45B of the other metal plate 45b is fixed to the automatic opening and closing door 43.
As shown in FIGS. 7A and 7B, for example, a circular breaker mounting hole 24c is formed in the suction duct 24, specifically the open door installation duct 24B, adjacent to the opening 24a. Then, as shown in FIG. 3, the operator grips the barrier 45 with a finger M or the like, and inserts it into the open door installation duct 24B through the barrier mounting hole 24c. At the same time, the operator forcibly rotates the automatic opening / closing door 43 against the reversal force of the spring spring 44c. Then, the opening 24a is closed. Here, the operator inserts the bolt 45e of the support part 45B of the one metal plate 45a with a finger M or the like into a small hole provided in the opening door installation duct 24B and the outside door installation duct 24B together with the butterfly screw 45g. Secure with screws.

After the blocking device 45 is mounted in the open door installation duct 24B, the blocking member mounting hole 24c is closed by the closing member 46. As shown in FIG. 7, the closing member 46 includes a flexible closing part 46a made of a rubber material or the like and a detachable frame 46b. The closing part 46a and the detachable frame 46b are integrally attached at the time of manufacture. The detachable frame 46b is provided with a gripping portion 46c and a holding portion 46d formed, for example, by a substantially disk-like plate at the top and bottom. The closing component 46a has a circumferential groove 46d at the center in the width direction. When closing the circuit breaker mounting hole 24c, the operator inserts the circuit breaker mounting hole 24c while deforming the closing part 46a, and presses and fixes it in the open door installation duct 24B. The sealing performance at the position of the breaker mounting hole 24c is enhanced.

Thus, if a cause such as a power failure occurs, the fan motor 33 stops, the temperature of the suction duct 24 and the opening door installation duct 24B rises, and when the temperature reaches a predetermined temperature, for example, 72 ° C. or higher, the solder solution of the circuit breaker 45 While 45c is melted, the other metal plates 45a and 45b are separated and cut as shown in FIG. Therefore, the automatic opening door 43 is deformed to the position shown in FIG. 4 by the reaction force of the spring spring 44c. The heat flow generated by the stove A does not flow into the fan motor 33 but is released to the outside of the stove A, and the fan motor 33 is protected without being heated. Thus, when the cause of the power failure is eliminated, the operator installs the barrier 45 in the suction duct 24, that is, the open door installation duct 24B again by the above-described assembly procedure.

In various stoves such as wood stoves and oil stoves, not only can the fan motor in the intake duct that takes in air for heating be protected, but also the fan motor in the intake duct that can take in combustion air can be protected, This is a versatile technology.

A Stove 22 Stove body 22a Front 22b Left door 22c Right door 22d Opening 22e Hinge 22f Handle 22g Left side 22h Right side 22i Left and right skirt 22j Rear 22k Upper 22l Outer frame case upper 22m Hot air discharge hole 22n Cylindrical body 23 Outer frame case
24 Intake duct 24A Diagonal flow duct 24B Open door installation duct 24a Opening 24b Edge 24c Breaker mounting hole 25 Disc 25a Air inlet 25b Center shaft member 25c Handle 26 House 27 Roof plate 28 Exhaust pipe 28a Exhaust pipe box 28b Damper 28c Adjusting plate 29 Leg 30 Hot air duct 31 Hot air introduction valve 31a 1st pipe 31b 2nd pipe 31c Lever 32 Outlet 33 Fan motor 34 Suspension metal fitting 34a Support bar 35 Metal frame 35a Hollow frame 35b of metal frame Metal frame base part 36 Terminal cover 37 Motor drive switch 38 Power line 39 Tilt prevention material 40 Temperature controller 40a Case 40b Dial type temperature setting part 41 Thermo sensor 42 Band plate 43 Automatic opening door 43a Base end part 43b Tip part
44 reverse drive member 44a shaft 44b hinge 44c spring spring 44d one plate 44e other plate 44f tightening component 44g one end of spring spring 44h other end of spring spring 44i plate material 45 breaker 45A breaker blown component 45B breaker support component 45a breaker Metal plate 45b, metal plate 45c, solder solution 45d of barrier device, injection hole 45e of barrier device, bolt 45f, nut 45g, butterfly screw 46, closure member 46a, closure component 46b, closure member detachable frame 46c, gripping portion 46d, holding portion 46e Circumferential groove M Worker's finger

Claims (2)

A stove body, an outer case that encloses the stove body and has a predetermined space, and has a hot air discharge hole for discharging hot air at the skirt, and a metal placed on the upper surface of the outer case A frame making base, a suction duct that is disposed adjacent to the metal frame base and is suspended by a support rod fixed to the metal frame base, a fan motor housed in the suction duct, and the stove body portion A substantially mountain-shaped roof plate fixed to the upper surface of the substrate, a thermosensor fixed to the substantially mountain-shaped roof plate, and a temperature control that controls driving of the fan motor by a signal from the thermosensor and is fixed to the outer case A breaker attached to the suction duct and melted at a predetermined temperature, and an open door that is automatically opened by the action of the breaker and installed in a part of the suction duct. It is characterized by having Stove of the fan motor protection device. 2. The fan motor protection device for a stove according to claim 1, wherein the breaker mounting hole is disposed in the suction duct adjacent to the open door.

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