JP3426883B2 - Forced supply / exhaust heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced intake / exhaust type heater for heating by burning a fuel such as gas or oil. 2. Description of the Related Art Conventionally, this type of apparatus is shown in FIG.
As shown in FIG.
And the heat exchanger unit 103 are communicated and integrated, and a combustion / heat exchange unit 105 provided with an air supply port (not shown) and an exhaust port 104 is attached.
The air supply port of No. 5 faces an air supply port hole (not shown) on the rear surface of the apparatus main body 101, and the exhaust port 104 is integrated with a mounting plate 106 at its end to form a rear plate of the apparatus main body 101. A mounting plate 106 is attached to the inner surface of the back plate 107 by screws with a plurality of screws 109 from the inside so as to match with the exhaust port hole 108 of 107. The four corners of the combustion / heat exchange unit 105 are screwed to a partition plate 110 and a reinforcing bar 111.
Is removed from the front side of the device main body 101 by removing the front plate (not shown). [0004] By the way, in this conventional device, a mounting plate 106 integrated with the exhaust port 104 is provided.
The connection between the device and the exhaust port hole 108 provided on the back plate 107 of the device main body 101 is screwed with a plurality of screws 109, so that the combustion / heat exchange unit 1 is used for inspection and repair.
To remove 05, the combustion and heat exchange unit 105 cannot be removed without removing all the screws 109, and when the mounting plate 106 and the exhaust port hole 108 are connected and screwed, If all the screws 109 are not completely screwed, a gap is formed, and there is a possibility that the exhaust gas may leak therefrom. Further, since the position of the screw 109 to be screwed is located at the farthest position when viewed from the front of the device main body 101, it is necessary to mount and remove the screw 109 with one hand while supporting the screw 109 with the other hand. When installing or removing the screw 109, the screw 109 may be accidentally
Do not remove the combustion and heat exchange unit 105 unless another component is placed and mounted on the front side of the mounting plate 106 to be screwed in or screwed down. There was a disadvantage that it could not be done. The present invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, the configuration of the present invention is to make the communication between the combustion section and the heat exchanger section and the heat exchange section. vessel part and e fixed exhaust pipe <br/> Bei the back of the device body communicating with the other end to one end detachably the other end of the exhaust pipe and the heat exchanger unit via an exhaust pipe fixing bracket Locked forced supply / exhaust warm
In the chamber machine, the exhaust pipe fixing bracket has a substantially U-shaped cross section.
L-shaped engaging portions at both ends on the opening side, and the closing side
And the end of the exhaust pipe above and below the middle part.
Forming pressing pieces for pressing against the heat exchanger section,
An upper insertion hole and a lower insertion hole provided with an engagement portion in the heat exchanger portion.
When inserted in the
Further, the engaging piece is locked to a heat exchanger section . When the communicating combustion section 14 and the heat exchanger section 21 are to be mounted in the apparatus main body 1, the exhaust pipe fixing bracket 36 is previously provided.
The engagement portions 37 and 38 of the heat exchanger portion 21 are inserted into the upper insertion holes 43.
In a state in which the burner mounting base 3 of the combustion unit 14 is attached to the right end of the unit mounting plate 28
When the heat exchanger section 21 and the combustion section 14, which are brought into contact with each other by contacting the guide section 32, are pushed inward, the guide section 32 is guided by the right end of the unit mounting plate 28 and moves backward, and at the same time, the exhaust pipe The opening of the fixing bracket 36 moves while sliding on the outer periphery of the other end of the exhaust pipe 19. Then, the insertion portion 1 of the connection portion 12 at the other end of the exhaust pipe 9 having one end projecting from the inside of the device body 1 in advance.
3 is a heat exchanger part 2 in which the periphery of the opening is slightly raised
As the heat exchanger section 21 does not move deeper from that position by contacting the exhaust connection port 25 of the first exhaust pipe 25, the connection section 12 of the exhaust pipe 9 is gently pulled with one hand toward the front, and the heat exchange section 21 When the exchange unit 21 is pressed with the other hand, the communicating combustion unit 14 and the heat exchanger unit 21 further move deeper, and the insertion portion 13 at the end of the connection portion 12 is inserted into the exhaust connection port 25. It is inserted and stops at a predetermined position. When the screw hole 39 of the engaging piece 40 of the exhaust pipe fixing bracket 36 and the fixing hole 48 of the engaging piece receiving portion 46 are screwed and locked with the screw 47, The insertion portion 44 of the portion 42 and the lower insertion hole 45 serve as fulcrums, and the pressing piece 41 of the exhaust pipe fixing bracket 36 strongly presses the connection portion 12 of the exhaust pipe 9 against the exhaust connection port 25, and is fixed with one screw. The connection portion 12 of the exhaust pipe 9 is connected to the exhaust connection port 25 in close contact with the exhaust connection port 25, and the connection failure between the heat exchanger portion 21 communicating with the combustion portion 14 and the exhaust pipe 9 occurs with a simple operation. And the exhaust gas does not leak. Next, an embodiment of a forced supply / exhaust type heater according to the present invention will be described with reference to the drawings. 1 is a device body of a forced air supply / exhaust type heater, and a top plate 2 provided with various buttons and a display unit.
A middle plate 3 forming both sides and a back surface, a bottom plate 4 forming a bottom surface, a front panel 6 provided with a hot air outlet 5, and a leg 7 provided at a corner of the bottom surface of the middle plate 3. That is, it is placed on the table 8 and installed indoors. Reference numeral 9 denotes an exhaust pipe, one end of which is fixed from the inside of the equipment body 1 to an exhaust hole 11 provided on the back surface of the intermediate plate 3 by an exhaust pipe mounting bracket 10, and a large-diameter connection portion 12 at the other end.
And an insertion portion 13 having a diameter slightly smaller than the inner diameter of the connection portion 12 is provided so as to slightly protrude inside the connection portion 12. Numeral 14 denotes a combustion section, which is provided with a fuel pump 1 from an oil pan 16 which stores a fixed amount of fuel supplied from a cartridge type tank 15 which is detachably provided in the apparatus main body 1.
A burner unit 19 that vaporizes the fuel oil sent by the fuel cell 7 and mixes and burns the combustion air blown from the combustion air blower 18, surrounds the combustion flame, and guides high-temperature exhaust gas generated by combustion. It consists of a tube 20. A heat exchanger section 21 communicates with the combustion section 14 so that high-temperature exhaust gas guided by the outer cylinder 20 passes through an internal meandering exhaust gas passage, thereby transferring heat of the exhaust gas to a convection fan. A heat exchanger 23 for efficiently exchanging heat with the air blown from 22, a relay heat exchanger 24 connecting the heat exchanger 23 and the outer cylinder 20, and an exhaust connection port 25 formed on a side surface. The connection portion 12 of the exhaust pipe 9 is
And a connection receiving portion 26 for inserting and connecting the insertion portion 13 inside the device and exhausting exhaust gas from the device main body 1. Reference numeral 27 denotes a unit fixing bracket, which is a heat exchanger unit 2.
It is provided below the outer side surface of one relay heat exchanger 24 and is screwed from the front to the fixing bracket receiver 29 provided at the left end of the unit mounting plate 28 in the main unit 1 with a screw 30. Reference numeral 31 denotes a burner mount, which is provided on the burner portion 19 of the combustion portion 14 and has a guide portion 32 formed by bending one side of the burner approximately at a right angle, and a front position when the guide portion 32 is positioned on the bottom surface. One side of the burner mounting base 31 is bent at a substantially right angle to form a front mounting portion 33, and the front mounting portion 33
Is fixed to a unit fixing hole (not shown) formed at the right end of the unit mounting plate 27 with a screw 35 from the front side. Reference numeral 36 denotes an exhaust pipe fixing bracket, which is formed by bending both ends of a plate material so that its cross section is substantially U-shaped.
Engagement portions 3 formed at both ends of the U-shaped opening side with the tips bent outward at substantially right angles to form an approximately L-shaped cross section.
7 and 38 are provided, and a screwing hole 39 is provided on the U-shaped closing side.
Is formed by cutting and raising, and the tip is bent substantially inward at a substantially right angle inward at substantially the center of the bent portion at both ends at the U-shaped intermediate portion. It is formed in a substantially L-shape, and the connecting portion 1 of the exhaust pipe 9 is formed.
A press piece 41 is provided to press the connection portion 12 against the connection receiving portion 26 when 2 is connected to the connection receiving portion 26. Reference numeral 42 denotes an engagement receiving portion which is fixed to the side surface of the connection receiving portion 26 by spot welding, has an L-shaped cross section at the upper portion, and has one bent portion of the exhaust pipe fixing bracket 36 at the bent portion. Upper insertion hole 43 into which 37 is inserted and engaged
And the other engaging portion 38 at the bottom.
A lower insertion hole 45 is formed in which is inserted and engaged, and the exhaust pipe fixing bracket 36 is rotatable around the engaging portion within a certain angle with respect to the connection receiving portion 26. It can be attached. The side surface of the connection receiving portion 26 where the lower insertion hole 45 is located is recessed, so that the engagement portion 38 inserted into the lower insertion hole 45 can be rotated even when the exhaust pipe fixing bracket 36 is rotated. The exhaust pipe fixing member 36 can be freely rotated within a certain angle range without abutment within a certain angle range. Reference numeral 46 denotes an engagement piece receiving portion, which is provided on the upper front surface of the engagement receiving portion 42 and is threaded for inserting and fixing a screw 47 into a screw hole 39 of the engagement piece 40 of the exhaust pipe fixing bracket 36. A fixing hole 48 is provided. Next, the combustion unit 1 communicated at the time of assembly or the like.
When the heat exchanger 4 and the heat exchanger 21 are mounted in the apparatus main body 1, the engaging portions 37 and 38 of the exhaust pipe fixing bracket 36 are previously mounted on the upper insertion hole 43 and the lower insertion hole 45 of the heat exchanger 21. In this state, the guide 32 of the burner mount 31 of the combustion unit 14 communicating with the heat exchanger unit 21 is brought into contact with the right end of the unit mount 28 in the apparatus main body 1 to position the unit mount 28 relative to the unit mount 28. When the combustion unit 14 and the heat exchanger unit 21 that are communicated with each other in this state are pushed to the back, the guide unit 32 is guided by the right end of the unit mounting plate 28 and moves to the back. A connection portion 12 provided at the other end of the exhaust pipe 9 previously connected from the inside of the main body 1 to an exhaust hole 11 provided at the back surface of the intermediate plate 3 at one end by an exhaust pipe fitting 10. The exhaust port 25, which is slightly raised around the opening, is in contact with the inlet section 13 and is in communication with the combustion section 1.
4 and the heat exchanger section 21 do not advance to the back from that position, so the connecting section 12 of the exhaust pipe 9 is lightly pulled toward the user with one hand to connect the combustion section 14 and the heat exchanger section 21 with the other hand. When pressed, the combustion section 14 and the heat exchanger section 21 that have proceeded further into the exhaust connection port 25 and the insertion section 13 at the end of the connection section 12 is inserted into the exhaust connection port 25 to communicate with each other are stopped at a predetermined position. Next, the screw hole 39 of the engaging piece 40 of the exhaust pipe fixing bracket 36 and the fixing hole 47 of the engaging piece receiving portion 46 are screwed and locked with screws. With the insertion portion 44 and the lower insertion hole 45 of the engagement receiving portion 42 serving as fulcrums, the pressing piece 41 strongly presses the connection portion 12 of the exhaust pipe 9 against the exhaust connection port 25, and the exhaust pipe 9 is inserted into the exhaust connection port 25. The connection portions 12 are completely adhered and connected. The front mounting portion 3 of the burner mounting base 31
By inserting a screw from the unit fixing hole 34 of the third unit toward the unit fixing hole of the unit mounting plate 27 and screwing it, the combustion unit 14 and the heat exchanger unit 2 which are completely communicated with each other are screwed.
1 are fixed in the device main body 1. When the combustion part 14 and the heat exchanger part 21 communicated for inspection and repair are to be removed from the inside of the apparatus main body 1, first, the front mounting part 33 of the burner mounting base 31 and the unit mounting plate 27 are connected. Remove the screw that has been screwed, and then tighten the screw hole 3 of the engagement piece 40 of the exhaust pipe fixing bracket 36.
9 and the screw 47 screwing the fixing hole 48 of the engagement piece receiving portion 46 are removed. When the communicating combustion part 14 and the heat exchanger part 21 are pulled forward, the insertion part 13 of the connection part 12 of the exhaust pipe 9 connected to the exhaust connection port 25 is connected to the exhaust connection. The connecting portion 12 of the exhaust pipe 9 is slightly pulled toward the mouth 25 in contact with the opening 25. When the communicating portion 14 and the heat exchanger portion 21 which are further communicated from this state are pulled forward, the insertion portion 13 of the connecting portion 12 of the exhaust pipe 9 is disengaged from the exhaust connecting port 25, thereby communicating. The combustion unit 14 and the heat exchanger unit 21 can be completely removed from the device main body 1. As described above, the heat exchanger section 21 communicating with the combustion section 14 and the exhaust pipe 9 can be connected and disconnected with one screw, and the screw is also located in the front of the apparatus main body 1. The connection and disconnection of the heat exchanger section 21 communicating with the combustion section 14 and the exhaust pipe 9 are easy, and the screws are not dropped during the work. it can. The engagement piece 4 of the exhaust pipe fixing bracket 36 is also provided.
0 screw holes 39 and the fixing holes 4 of the engagement piece receiving portions 46.
8 is fixed by screwing with a single screw 47 so that the insertion portion 44 of the engagement receiving portion 42 and the lower insertion hole 45 serve as fulcrums, and the pressing piece 41 connects the connection portion 12 of the exhaust pipe 9. The exhaust pipe 9 is strongly pressed against the exhaust connection port 25 and the connection section 12 of the exhaust pipe 9 is connected to the exhaust connection port 25 so as to be completely in close contact with the exhaust connection port 25. No connection failure occurs and no exhaust gas leaks. As described above, the present invention provides an exhaust system in which the combustion unit and the heat exchanger unit communicate with each other, one end of which communicates with the heat exchanger unit, and the other end of which is fixed to the back of the equipment body. Equipped with pipe
For example, detachably forced supply and exhaust type heating which locks the other end of the exhaust pipe and the heat exchanger unit via an exhaust pipe fixing bracket
In the machine, the exhaust pipe fixing bracket has a substantially U-shaped cross section.
At the opening side, L-shaped engaging portions are provided at both ends, and at the closing side,
Heat the engagement piece and heat one end of the exhaust pipe above and below the middle part.
Pressing pieces to be pressed against the exchanger section are formed respectively,
The joint is formed by the upper and lower insertion holes provided in the heat exchanger.
When inserted and elastically supported and movably supported in the horizontal direction
In addition, since the engaging piece is locked to the heat exchanger section, connection and disconnection between the heat exchanger section communicating with the combustion section and the exhaust pipe can be easily performed, and the screw is dropped during operation. Don't worry. Further, since one end of the heat exchanger section and one end of the exhaust pipe are locked via the exhaust pipe fixing bracket , the pressing piece of the exhaust pipe fixing bracket strongly presses one end of the exhaust pipe against the heat exchanger section to completely complete the operation. Therefore, the connection between the heat exchanger and the exhaust pipe connected to the combustion section does not occur, and the exhaust gas does not leak.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a forced air supply / exhaust type heater provided with an embodiment of the present invention. FIG. 2 is a front view showing the inside of the device main body. FIG. 3 is a front view showing a state in which the combustion section and the heat exchanger section communicate with each other. FIG. 4 is a side view of the same. FIG. 5 is a perspective view of the exhaust pipe fixing bracket. FIG. 6 is an essential part plan view showing a connection state between the connection receiving portion and a connection portion of an exhaust pipe. FIG. 7 is a sectional view of the main part. FIG. 8 is a front view showing the inside of a conventional forced supply / exhaust heater. FIG. 9 is a sectional view showing a connection configuration of the exhaust unit. [Description of Signs] 1 Main body 9 Exhaust pipe 14 Combustion section 21 Heat exchanger section 36 Exhaust pipe fixing bracket

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-42926 (JP, A) JP-A 63-104830 (JP, U) JP-A 63-142560 (JP, U) (58) Investigation Field (Int. Cl. ⁷ , DB name) F24H 9/02 302

Claims (1)

(57) [Claim 1] An exhaust pipe communicating with a combustion unit and a heat exchanger unit, and having one end communicating with the heat exchanger unit and the other end fixed to the back of the equipment body. Bei example, at the heat exchanger unit and the forced air supply and exhaust type heating machine seals detachably engaged the other end of the exhaust pipe via an exhaust pipe fixing bracket, the exhaust pies
The fixing bracket has a substantially U-shaped cross section, and has a cross section L at both ends on the opening side.
-Shaped engaging part, an engaging piece on the closing side, and an intermediate part
Pressing one end of the exhaust pipe up and down against the heat exchanger
Each piece was formed, and the engaging portion was provided in the heat exchanger portion.
Insert it into the upper insertion hole and the lower insertion hole and make it elastic and
And the engaging piece is heat-exchangeable.
A forced air supply / exhaust type heating machine, characterized in that it is locked to the heater.