JP2003318456A - Method for producing series thermocouple - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate welding work and assembling work. <P>SOLUTION: After wires 49 are passed through assembling holes 38a, 38b and 38c made, respectively, through a first metallic member 31, a second metallic member 32 and an insulating sheet 40 so that the metallic members 31, 32 and the insulating sheet 40 are not disjointed, the end parts are welded thus assembling a series thermocouple 21. According to this producing method, the work is facilitated, the work efficiency is enhanced and a product of good quality can be produced inexpensively. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides two kinds of dissimilar metal members alternately arranged and connected in a zigzag shape.
The present invention relates to a method for manufacturing a series thermocouple, which is formed by connecting a plurality of thermocouple elements.

[0002]

2. Description of the Related Art As a series type thermocouple, as shown in FIGS. 9 and 10, a plurality of thermocouple elements are formed by connecting ends of two different kinds of metal members 231 and 232 and connecting them in a zigzag shape. It is known that 241 are continuously formed. That is, by forming the hot junctions a ′ and the cold junctions b ′ by the number of the thermocouple elements 241, even if the thermoelectromotive force obtained from each thermocouple element 241 is small,
The series thermocouple 221 is configured to obtain a large thermoelectromotive force as a whole. Such a series-type thermocouple 221 is manufactured by arranging the metal members 231 and 232 one by one and welding the ends in a zigzag shape.

[0003]

However, arranging the metal members 231 and 232 side by side and welding the ends thereof requires a high degree of skill because the metal members 231 and 232 are likely to come apart and the work is difficult. is there. Therefore, it takes a long working time, it is difficult to maintain a constant quality, and the manufacturing cost increases. An object of the method for manufacturing a series-type thermocouple of the present invention is to solve the above problems and to easily perform welding and assembling work.

[0004]

In order to solve the above-mentioned problems, a method for manufacturing a series-type thermocouple according to claim 1 of the present invention is arranged such that two kinds of metal members having different kinds of metal are alternately arranged and the end portions thereof are arranged. By welding and connecting in a zigzag manner, in a method for manufacturing a series-type thermocouple formed by connecting a plurality of thermocouple elements, an assembly hole is opened in each of the metal members,
After passing the wire through the assembly hole, weld each end,
After that, the point is to remove the wire.

In the method for manufacturing a series-type thermocouple according to a second aspect of the present invention, a plurality of two kinds of metal plates having different kinds of metals are alternately arranged, and an insulating sheet is sandwiched between adjacent metal plates so that they are adjacent to each other. In a method for manufacturing a series type thermocouple by connecting a plurality of thermocouple elements by welding and connecting the ends of the metal plate in a zigzag shape, an assembly hole is formed in each of the metal plate and the insulating sheet. Open, through the wire rod through the assembly hole, after overlapping the metal plate and the insulating sheet, weld the end of the metal plate, so that the insulating sheet does not come off between the adjacent metal plates by a fixing member, After that, the point is to remove the wire.

According to a third aspect of the present invention, in the method for manufacturing a series-type thermocouple, two kinds of metal plates having different kinds of metals are alternately arranged, and an insulating sheet is sandwiched between adjacent metal plates to be adjacent to each other. A plurality of thermocouple rows in which a plurality of thermocouple elements are connected to each other are manufactured by welding the ends of a metal plate and connecting them in a zigzag shape, and the thermocouple rows are formed by arranging a plurality of rows in front and back. A method for manufacturing a mold thermocouple, wherein two assembly holes are opened in each of the metal plate and the insulating sheet, and two parallel wire rods are passed through the assembly holes to laminate the metal plate and the insulating sheet. After that, a plurality of thermocouple rows are manufactured by welding the end portions of the metal plate, and the thermocouple rows are arranged in front and rear rows, and then the plurality of arranged thermocouple rows are sandwiched from the front and rear by a fixing frame. The main idea is to fix it and then remove the wire.

According to the method of manufacturing a series-type thermocouple according to claim 1 of the present invention having the above-mentioned structure, the end portions are zigzag-shaped after the metal members are arranged and the wire members are passed through the assembly holes so that the metal members are not disjointed. Weld to, and pull out the wire after welding. Therefore, the metal members do not fall apart during welding, and workability improves.

According to a second aspect of the present invention, in the method for manufacturing a series-type thermocouple, after the metal plate and the insulating sheet are superposed and the wire is passed through the assembly hole so that the metal plate and the insulating sheet do not come apart. The ends of the metal plates are welded in a zigzag manner so that the insulating sheet does not come off between the metal plates with a fixing member, and then the wire rod is pulled out. Therefore, the metal plate and the insulating sheet do not come apart during the welding or assembling work, and the workability is improved.

According to a third aspect of the present invention, in the method for manufacturing a series-type thermocouple, a metal plate and an insulating sheet are laminated, two parallel wire rods are passed through assembly holes opened at two places, and the metal plate is inserted. The metal plate and the insulating sheet are positioned so that the metal plate and the insulating sheet are not separated from each other, and then the ends of the metal plate are welded in a zigzag shape to manufacture a plurality of thermocouple rows. Then, by arranging a plurality of rows of thermocouples in the front and rear, and sandwiching them from the front and back by a fixing frame, while fixing the plurality of thermocouple rows, the insulation sheet is also prevented from coming off,
Then pull out the wire. Therefore, the metal member and the insulating sheet do not come apart during the welding or assembling work, and the workability is improved. Moreover, the precise positions of the metal plate and the insulating sheet can be determined only by passing the two parallel wires through the assembly holes, and the workability is further improved. Further, by simply fixing the thermocouple train with the fixing frame, the insulating sheet can be prevented from coming off and the working efficiency can be further improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the structure and operation of the present invention described above, preferred embodiments of the method for producing a series type thermocouple of the present invention will be described below with reference to FIGS. To do.

The series type thermocouple 21 is, as shown in FIG.
A rear thermocouple row 29 and a front thermocouple row 30 arranged in front and rear two rows
Composed of and. Then, as shown in FIGS. 2 to 5, the rear thermocouple array 29 includes a first metal member 31 made of a stainless steel plate having a substantially L-shaped outer shape and a constantan plate having a substantially L-shaped outer shape thinner than the first metal member 31. A second metal member 32 consisting of
The insulating sheet 40 ensures insulation between the metal members. The first metal member 31 may be made of copper, chromel, iron or the like.

The second metal member 32 is bent so that a lower end thereof has a step H, and a bent lower end 33 is formed, and a tip of the second metal member 32 is bent so that a step H is formed in a direction opposite to the lower end. Thus, the bent tip portion 34 is formed. A cutout portion 37b is formed in the bent tip portion 34. The front end and the lower end of the first metal member 31 are not bent to form a flat front end 36 and a flat lower end 35, respectively.
A thin notch 37a is formed in the flat tip portion 36. Assembly holes 38a are formed in the upper and lower parts of the first metal member 31, and two convex portions 39a having a height X are formed by press working slightly inside the assembly holes 38a. Similarly, the second metal member 32 is similarly provided with an assembly hole 38b at its upper and lower portions, and two convex portions 39b having a height X are formed by press working slightly inside the assembly hole 38b. The convex portions 39a and 39b are formed so that the first metal member 31 and the second metal member 32 project in the same direction when the metal members 31 and 32 are alternately arranged. Further, a hook portion 53a cut out in a U shape is formed on the back surface of the first metal member 31, and similarly, a hook portion cut out in a U shape is also formed on the back surface of the second metal member 32. The hanging portion 53b is formed.

As shown in FIG. 5, the post-thermocouple array 29 is formed by alternately arranging these metal members 31 and 32 and welding the ends thereof in a zigzag shape.
Thickness Y (X + Y = H) to ensure insulation between 32
The insulating sheet 40 is sandwiched between the metal members 31 and 32.
Assembling holes 38c are also opened in the upper and lower portions of the insulating sheet 40. The assembly hole 38c of the insulating sheet 40 is opened so as to be at the same position as the assembly holes 38a and 38b of the metal members 31 and 32 when the insulating sheet 40 is sandwiched between the metal members 31 and 32. Further, a hook portion 53c is also formed on the back surface of the insulating sheet 40, similarly to the metal members 31 and 32.

Next, a method of manufacturing the series type thermocouple 21 will be described. The positioning jig 54 for positioning the metal members 31 and 32 and the insulating sheet 40, as shown in FIG.
It is composed of a fixed base 55 and two parallel wires 49 fixed to the fixed base 55. First, in the first step, the assembly holes 38a, 3
The wire 49 is passed through 8b and 38c, respectively, and the insulating sheet 40, the first metal member 31, the insulating sheet 40, the second metal member 32, the insulating sheet 40, and the first metal member 31 are alternately laminated in this order. At this time, the first metal member 31 and the second metal member 32 are arranged such that the flat leading end portion 36 and the bent leading end portion 34 face each other, and the flat lower end portion 35 and the bent lower end portion 33 face each other.

In the second step, the front end portion and the lower end portion of the metal members 31 and 32 laminated as described above are alternately welded and connected in a zigzag shape to produce the post-thermocouple array 29.
The junction between the bent tip portion 34 and the flat tip portion 36 becomes the hot contact point a, and the junction point between the bent lower end portion 33 and the flat bottom portion 35 becomes the cold contact point b.

Similarly to the rear thermocouple row 29, the front thermocouple row 30 has a first metal member made of a stainless steel plate having a substantially L-shaped outer shape, and a constantan plate having a substantially L-shaped outer shape thinner than the first metal member. And a second metal member consisting of Then, it is manufactured through the first step and the second step as described above. The metal member of the front thermocouple row 30 is
It is formed smaller than the metal members 31 and 32 of the rear thermocouple row 29, and the metal members of the front thermocouple row 30 and the hook portions of the insulating sheet are formed on the front side.

Then, in the third step, as shown in FIG.
The U-shaped mounting frame 42, the insulating band 45, the front thermocouple row 3
0, the insulating band 45, the partition plate 44, the insulating band 45, the rear thermocouple row 29, and the insulating band 45 in this order, and then the pressing plate 43 holds them and the screws 48 fix them.
1 is assembled. Further, at this time, the holding plate 43 fits into the hook portions 53a, 53b, 53c of the rear thermocouple row 29, and the mounting frame 42 fits into the hook portions of the front thermocouple row 30 to thereby cause the insulating sheet 40 to move. It becomes a fallout.

In the fourth step, the wire 49 is assembled into the assembly holes 38a, 38
By pulling out from b and 38c and connecting the rear thermocouple row 29 and the front thermocouple row 30 in series by the lead wire 46, a finished product of the series thermocouple 21 is completed.

As mentioned above, the two assembly holes 38a, 3
8b, 38c through two wires 49, the metal member 3
The metal members 31 and 32 and the insulating sheet 40 can be arranged so as to have a correct positional relationship only by laminating the insulating sheets 40 and 1 and 32. Furthermore, the assembly holes 38a, 38b,
Since the wire 49 is passed through 38c, the metal members 31 and 32 and the insulating sheet 40 do not come apart during the welding work, and the work is easy to perform. Further, even at the time of assembling work in the third step, the wire 49 is passed through the assembling holes 38a, 38b, and 38c, so that the insulating sheet 40 is attached to the metal member 3.
It is easy to work since it does not come apart from between 1 and 32. As a result, work efficiency is greatly improved, and high quality products can be manufactured at low cost.

Further, as described above, the step H is provided at the tip end and the bottom end of the second metal member 32 to form the gap of the distance H between the metal members 31 and 32, thereby ensuring good insulation. I am trying to radiate heat. In this case, each metal member 3
Since the structure is such that the tip portions and the lower end portions of 1 and 32 are only welded alternately, the metal members 31 and 32 move like an accordion, and the metal members 31 and 32 themselves are distorted, so that the distance is not uniform. In some cases, it becomes uniform and it is difficult to dissipate heat in a narrow space, and the cold junction b becomes high in temperature, which may lower the thermoelectromotive force. Therefore, in the series thermocouple 21 of the present embodiment, the convex portions 39a and 39b are formed on the metal members 31 and 32. Height X of convex portions 39a and 39b and insulating sheet 40
When the thickness Y is added, the distance H becomes exactly the distance H between the metal members 31 and 32. Therefore, when the metal members 31 and 32 are alternately arranged and the insulating sheet 40 is sandwiched therebetween, as shown in FIG. 5, the convex portions 39a and 39b come into contact with the insulating sheet 40, and the space between the metal members 31 and 32 is increased. Secure a distance H. That is, the metal members 31, 32 are formed by the convex portions 39a, 39b.
Since the space between them is supported, the metal members 31 and 32 can be easily arranged at equal intervals at a predetermined pitch simply by arranging the metal members 31 and 32. Further, it is also possible to prevent the metal members 31 and 32 from moving like an accordion after welding, and to prevent the metal members 31 and 32 themselves from being distorted so that the distance becomes non-uniform. Further, since the notches 37a and 37b are formed in the tip portions 34 and 36, the heat capacity of the hot junction a becomes small.

Series thermocouple 2 manufactured in this way
1 is used, for example, as a power source for a blower fan of an infrared stove with a fan, which heats by hot air in addition to radiant heat from a red-hot plate burner.

As shown in FIG. 7, the stove 1 is provided with a red-heat plate type burner 4 facing the radiation opening 2 in a case body 3 having a radiation opening 2 on the front surface.
The burner 4 includes a burner body 6 that forms a mixing chamber of fuel gas and primary air, and a combustion plate 7 made of ceramics that is provided in the burner body 6 and is provided with a large number of flame holes. The burner is a burner, and the fuel gas sucked from the suction hole (not shown) and the primary air are mixed well in the burner body 6, and the mixture gas is ejected from the flame holes of the combustion plate 7 to form a surface on the combustion plate 7. To burn. A series-type thermocouple 21 is provided on the front surface of the combustion surface 5 of the burner 4 so as to face each other, and the thermoelectromotive force generated by the series-type thermocouple 21 is used as a power source for the motor of the blower fan 11.

A blower fan 11 is provided at the bottom of the body case 3 for sending the combustion gas of the burner 4 from a warm air outlet 10 provided at the lower front of the body case 3. Behind the burner 4, there is a warm air suction port 12 near the upper part of the burner 4, and the fan supply cylinder 1 for guiding the combustion gas to the blower fan 11
3 is provided. A plurality of cold air suction ports 14 are provided in the upper rear part of the fan supply cylinder 13, and air for cooling the delivered combustion gas to an appropriate temperature without danger of burns or the like is sucked in. Further, on the rear surface of the body case 3, a plurality of intake ports 17 for sucking the air outside the device into the body case 3 are provided. Further, the blower fan 11 and the warm air outlet 10 are communicated with each other by the fan exhaust pipe 23.

According to the stove 1 having the above-described structure, when the ignition lever (not shown) is operated, the fuel gas is ejected from the combustion plate 7 and is ignited by the discharge from the electrode (not shown). Then, the user in front of the appliance is directly warmed by the radiant heat from the combustion plate 7 which has red heat. When the burner 4 burns, the combustion heat of the burner 4 heats the hot junction a of the series thermocouple 21 to generate thermoelectromotive force, which drives the blower fan 11. Then, the blower fan 11 sucks the combustion gas of the burner 4 from the hot air suction port 12 and the external air sucked into the appliance through the suction port 17 from the cold air suction port 14, and the mixture thereof is heated as the hot air blow port. By sending from 10 toward the front of the equipment, the whole room is uniformly heated with warm air.

The series thermocouple 21 is connected to the rear thermocouple array 2
9 and the front thermocouple row 30 are formed in two rows before and after, so that more thermocouple elements 41 can be provided in the limited space in front of the combustion plate 7. Therefore, the distance H between the metal members 31 and 32 can be increased while securing the number of thermocouple elements 41 required to drive the blower fan 11, so that heat dissipation is promoted and the temperature of the cold junction b rises. Can be suppressed and the thermoelectromotive force can be efficiently obtained.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be implemented in various modes without departing from the scope of the present invention. is there. For example, in the present embodiment, the insulating sheet 40 is sandwiched between the metal members 31 and 32, but insulation between adjacent metal members is ensured without sandwiching the insulating sheet, that is, adjacent metal members are As shown in FIG. 8, the insulating sheet need not be sandwiched as long as it does not come into contact with each other. In this case, no protrusion is formed on the metal member. First, in the first step, the wire material 49 is passed through the assembly holes 138a and 138b, respectively, and the first metal member 131, the second metal member 132, the first metal member 131, and the second metal member 132.
The layers are alternately stacked in this order. At this time, the first metal member 131
And the second metal member 132 are arranged such that the flat front end and the bent front end face each other, and the flat lower end and the bent lower end face each other. In FIG. 8, the second metal member 13
Assembling hole 13 of the first metal member 131 that is invisible and hidden by 2
8a is drawn with a dotted line.

In the second step, the front end portion and the lower end portion of the metal members 131 and 132 stacked as described above are alternately welded and connected in a zigzag shape to form the post thermocouple array 129. The front thermocouple row 130 is also formed through the above-described first step and second step, similarly to the rear thermocouple row 129. Then, in the third step, the insulating band 4 is attached to the U-shaped mounting frame 42.
5, the front thermocouple row 130, the insulating strip 45, the partition plate 44, the insulating strip 45, the rear thermocouple row 129, and the insulating strip 45 are stored in this order, and are pressed by the holding plate 43 and stopped by the screw 48 in series. The mold thermocouple 121 is assembled.

In the fourth step, the wire 49 is assembled into the holes 138a, 1a.
38b, rear thermocouple train 129 and front thermocouple train 1
By connecting 30 and 30 in series by the lead wire 46, a finished product of the series type thermocouple 121 is completed.

[0029]

As described in detail above, the first aspect of the present invention
According to the manufacturing method of the series thermocouple described, the wire member is passed through the assembly hole before welding the metal member, so that the metal member can be prevented from falling apart during the work, and the work becomes easy to perform and the work efficiency is improved. Is improved. As a result, high quality products can be manufactured at low cost.

Further, according to the method for producing a series type thermocouple according to claim 2 of the present invention, since the wire is passed through the assembly hole before the welding of the metal plate and the retaining of the insulating sheet by the fixing member, the metal plate is inserted. It is possible to prevent the insulating sheet and the insulating sheet from coming apart during these operations, which facilitates the operation and improves the work efficiency. As a result, high quality products can be manufactured at low cost.

Further, according to the method for manufacturing a series-type thermocouple according to claim 3 of the present invention, since the wire is passed through the assembly hole before welding the metal plate or fixing the plurality of thermocouple rows by the fixing frame, It is possible to prevent the metal plate and the insulating sheet from becoming disjointed during these operations, which facilitates the operation and improves the operation efficiency. Moreover, the precise positions of the metal plate and the insulating sheet can be determined only by passing the two parallel wires through the assembly holes, and the workability is further improved. In addition, it is possible to prevent the insulating sheet from coming off simply by sandwiching and fixing the plurality of thermocouple rows from the front and rear by the fixing frame, so that the work efficiency is further improved. As a result, high quality products can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a series thermocouple of the present embodiment.

FIG. 2 is a three-view drawing of a first metal member that constitutes the post-thermocouple array of the present embodiment.

FIG. 3 is a trihedral view of a second metal member that constitutes the pre-thermocouple array of the present embodiment.

FIG. 4 is a two-sided view of the insulating sheet of the present embodiment.

FIG. 5 is a rear view of the rear thermopile according to the present embodiment.

FIG. 6 is an explanatory diagram for stacking a first metal member, a second metal member, and an insulating sheet using a positioning jig.

FIG. 7 is a schematic cross-sectional view of an infrared stove with a fan as the present embodiment.

FIG. 8 is a perspective view of another embodiment of a series thermocouple.

FIG. 9 is a front view of a series type thermocouple as a conventional example.

FIG. 10 is a front view of a metal member as a conventional example.

[Explanation of symbols]

21 ... Serial thermocouple, 29 ... Rear thermocouple row, 30 ... Front thermocouple row, 31 ... First metal member, 32 ... Second metal member, 38
a, 38b, 38c ... Assembly hole, 40 ... Insulating sheet, 41
... Thermocouple element, 42 ... Mounting frame, 43 ... Holding plate, 49 ... Wire, 53a, 53b, 53c ... Hooking part, 54 ... Positioning jig, 55 ... Fixing base.

Claims (3)

[Claims] 1. A series type thermoelectric device formed by connecting a plurality of thermocouple elements by alternately arranging a plurality of two kinds of metal members having different kinds of metal and connecting the ends by welding to form a zigzag shape. In the pair manufacturing method, an assembly hole is opened in each of the metal members, a wire rod is passed through the assembly hole, respective ends are welded, and then the wire rod is pulled out to produce a series-type thermocouple. Method. 2. A plurality of two kinds of metal plates having different kinds of metals are alternately arranged and an insulating sheet is sandwiched between adjacent metal plates,
In a method for manufacturing a series-type thermocouple in which a plurality of thermocouple elements are connected by welding the ends of adjacent metal plates in a zigzag manner, the metal plate and the insulating sheet are respectively assembled. A hole is opened, a wire is passed through the assembly hole, the metal plate and the insulating sheet are superposed, and then the ends of the metal plate are welded so that the fixing sheet does not separate the insulating sheet from the adjacent metal plates. And then removing the wire rod. A method for manufacturing a series-type thermocouple. 3. A plurality of two kinds of metal plates having different kinds of metals are alternately arranged, and an insulating sheet is sandwiched between adjacent metal plates,
A plurality of thermocouple rows in which a plurality of thermocouple elements are connected to each other are manufactured by welding the ends of adjacent metal plates and connecting them in a zigzag shape, and the thermocouple rows are arranged in front and rear rows. A method for manufacturing a serial thermocouple, wherein two assembly holes are opened in each of the metal plate and the insulating sheet, and two parallel wire rods are passed through the assembly holes to separate the metal plate and the insulating sheet. After stacking, a plurality of thermocouple rows are manufactured by welding the end portions of the metal plates, the thermocouple rows are arranged in front and rear, and the plurality of thermocouple rows are sandwiched from the front and rear by a fixing frame. A method for manufacturing a series-type thermocouple, which comprises wearing, fixing and then removing the wire.