Solid fuel combustion appliances

Abstract

To make the solid combustion inlet safer to open and close. [Solution] The solid fuel combustion device includes a combustion chamber with an opening, a door that closes the opening, a link mechanism that supports the door to rotate vertically, and a weight that acts on the link mechanism to push the door upward. Preferably, the weight includes a first weight that balances the weight of the door and a second weight whose direction of action on the link mechanism is reversed depending on the rotational position of the door.

Description

Technical Field

[0006]

[0001] The present invention relates to a solid fuel combustion appliance.

Background Art

[0002] For example, Patent Document 1 discloses a wood stove characterized by including a primary combustion chamber covered with an openable window through which firewood can be inserted, a heat riser extending from the lateral direction of the primary combustion chamber and guiding the flame of the primary combustion chamber upward, a downdraft section guiding the airflow discharged from the heat riser in the direction of an external chimney, and a bypass passage provided from above the primary combustion chamber to the downdraft section.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to enable the opening of the solid fuel inlet to be opened and closed more safely.

Means for Solving the Problems

[0005] The solid fuel combustion appliance according to the present invention includes a combustion chamber provided with an opening, a door closing the opening, a link mechanism supporting the door so as to rotate in the vertical direction, and a weight acting on the link mechanism so as to push the door upward.

[0006] Preferably, the weight includes a first weight that balances the weight of the door and a second weight whose acting direction on the link mechanism reverses according to the rotation position of the door.

[0007] Preferably, the link mechanism includes two link members parallel to each other, and the weight includes a first weight fixed on one of the link members on the side opposite to the door with respect to the pivot axis of the link member, and a second weight fixed on the other of the link member on the side opposite to the door with respect to the pivot axis of the link member, wherein the second weight is arranged to pass through the apex of the rotational trajectory within the rotational range of the link member.

[0008] Preferably, the door further includes a lower fixing portion that is rotatably fixed to the link mechanism below the center of the door, and an upper fixing portion that is detachably fixed to the link mechanism above the center of the door. [Effects of the Invention]

[0009] According to the present invention, the solid combustion inlet can be opened and closed more safely. [Brief explanation of the drawing]

[0010] [Figure 1] (A) is a front view of wood-burning stove 1, and (B) is a rear view of wood-burning stove 1. [Figure 2] This is a right side view of the wood-burning stove 1 with door 12 closed. [Figure 3] This is a right side view of wood-burning stove 1 with door 12 open. [Figure 4] This is a right side view of wood-burning stove 1 when performing maintenance. [Modes for carrying out the invention]

[0011] Figure 1(A) is a front view of wood-burning stove 1, and Figure 1(B) is a rear view of wood-burning stove 1. In this example, wood-burning stove 1 is described as a specific example of a solid fuel combustion appliance, but a pellet stove or the like may also be used. Figure 2 is a right side view of the wood-burning stove 1 with the door 12 closed. Since the wood-burning stove 1 in this example is generally symmetrical, the left side view is omitted. Figure 3 is a right side view of the wood-burning stove 1 with the door 12 open. As illustrated in Figure 1, the wood-burning stove 1 includes a combustion chamber 10 with an opening for inserting solid fuel such as firewood, a door 12 that closes the opening of the combustion chamber 10, a link mechanism 14 (specifically, an upper link member 140 and a lower link member 142) that supports the door 12 to rotate vertically, weights 16 (specifically, a door fixing weight 160 and a balance weight 162) that act on the link mechanism to push the door 12 upward, and an operating bar 18 for opening and closing the door 12. Furthermore, the door 12 is provided with a transparent window 122 for viewing the inside of the combustion chamber 10.

[0012] The combustion chamber 10 is a combustion chamber for burning solid fuel such as firewood, and is provided with an opening for introducing solid fuel. In this example, the combustion chamber 10 has an opening at the lower front. Door 12 is a non-combustible door that closes the opening of the combustion chamber 10. As illustrated in Figure 1, door 12 in this example has a structure in which a transparent window 122 is fitted into a metal frame. The transparent window 122 allows the burning firewood to be seen.

[0013] The link mechanism 14 is a link mechanism that supports the door 12 so that it rotates vertically. In this example, the link mechanism 14 is provided on the right side and left side of the combustion chamber 12, respectively. More specifically, the link mechanism 14 includes an upper link member 140 and a lower link member 142, as illustrated in Figure 2, and these together constitute a parallel link mechanism. The upper link member 140 is a bent rod-shaped member, with one end (front side) rotatably fixed to the top of the door 12, and the other end (rear side) to which a door fixing weight 160 is fixed. It is rotatably fixed to the side of the combustion chamber 10 by a pivot shaft 150 between these two ends. In other words, the upper link member 140 is fixed and rotates on the side of the wood-burning stove 1 by the pivot shaft 150. The lower link member 142 is a straight, rod-shaped member. One end (front side) is rotatably fixed to the lower part of the door 12, and the other end (rear side) has a balance weight 162 fixed to it. The lower link member 142 is rotatably fixed to the side of the combustion chamber 10 by a pivot shaft 152 between these two ends. In other words, the lower link member 142 is fixed to the side of the wood-burning stove 1 by the pivot shaft 152 and rotates.

[0014] The door fixing weight 160 is a weight whose direction of action on the link mechanism 14 reverses depending on the rotational position of the door 12, and is an example of a second weight according to the present invention. More specifically, as illustrated in Figures 2 and 3, the door fixing weight 160 is positioned so as to pass through the apex of the rotational trajectory within the rotational range of the upper link member 140. That is, before and after the door fixing weight 160 passes through the apex of its rotational trajectory, the direction in which the door fixing weight 160 acts on the upper link member 140 reverses. In other words, as illustrated in Figure 2, when the door fixing weight 160 is located on the front side of the apex of the rotational trajectory due to the bending shape of the upper link member 140, the door fixing weight 169 acts so that the upper link member 140 pushes the door 12 down. On the other hand, as illustrated in Figure 3, when the door fixing weight 160 is located on the rear side of the apex of the rotational trajectory, the door fixing weight 169 acts in such a way that the upper link member 140 pushes the door 12 upward.

[0015] The balance weight 162 is a weight that balances the weight of the door 12, and is an example of the first weight according to the present invention. In this example, the balance weight 162 is provided at the end opposite to the door 12, with reference to the pivot axis of the lower link member 142, and has a weight and mounting position that balances the weight of the door 12. In other words, the door fixing weight 160 and the balance weight 162 in this example work together to facilitate the vertical movement of the door 12, while also ensuring that the door 12 remains stable in both the fully closed state (the state in Figure 2) and the fully open state (the state in Figure 3).

[0016] The operation bar 18 is an operation lever for opening and closing the door 12, and in this example, it is provided so as to protrude from the lower end of the door 12 toward the front side.

[0017] FIG. 4 is a right side view of the wood stove 1 when maintenance is being performed. As illustrated in FIG. 4, the wood stove 1 has an upper fixing portion 154 that detachably and rotatably fixes the upper part of the door 12 and the upper link member 140. The upper fixing portion 154 in this example detachably and rotatably fixes the upper end of the door 12 and the front side end of the upper link member 140 to each other. Further, the wood stove 1 has a lower fixing portion 156 that rotatably fixes the lower part of the door 12 and the lower link member 142. The lower fixing portion 156 in this example rotatably fixes the lower end of the door 12 and the front side end of the lower link member 142. With the above configuration, as illustrated in FIG. 4, by releasing the fixing by the upper fixing portion 154 and tilting the door 12 toward the front side, the inner surface of the door 12 can be easily cleaned. Also, in this state, since the center of gravity of the door 12 moves far from the rotation axis 152, the rotation position of the lower link member 142 is fixed. Also, regarding the upper link member 140, since the door fixing weight 160 exists on the front side of the apex of the rotation orbit, the rotation position of the upper link member 140 is fixed.

[0018] As described above, according to the wood stove 1 in the present embodiment, by moving the door 12 up and down by the parallel link mechanism to open and close it, the opening and closing orbit of the door 12 can be made smaller compared to the conventional side-opening door. Also, according to the wood stove 1 in this example, by reversing the acting direction by the door fixing weight 160, each of the opening and closing states of the door 12 is stabilized, and the operation of loading firewood and the like can be performed more safely. Also, according to the wood stove 1 in this example, by rotatably fixing below the center of the door 12 and making it detachable above the center of the door 12, as illustrated in FIG. 4, the inside of the door 12 can be easily maintained.

Explanation of Signs

[0019] 1… Wood-burning stove 10… Combustion chamber 12... Door 140…Upper link member 142...Lower link member 154...Upper fixing part 156…Lower fixed part 160... Door fixing weight 162... Balance weight

Claims

1. A combustion chamber with an opening, A door that closes the aforementioned opening, A link mechanism that supports the door to rotate vertically, A weight acts on the link mechanism to push the aforementioned door upward, and A solid fuel combustion appliance.

2. The weight includes a first weight that balances the weight of the door and a second weight whose direction of action on the link mechanism is reversed depending on the rotational position of the door. The solid fuel combustion device according to claim 1.

3. The link mechanism includes two link members that are parallel to each other, The aforementioned weight is, On one of the link members, a first weight is fixed on the side opposite to the door, with reference to the pivot axis of the link member, On the other side of the link member, a second weight is fixed to the side opposite to the door, with reference to the pivot axis of the link member, Includes, The second weight is positioned so as to pass through the apex of the rotational trajectory within the rotational range of the link member. The solid fuel combustion device according to claim 1.

4. A lower fixing part is fixed below the center of the door, so as to be rotatable with respect to the link mechanism, An upper fixing portion that is detachably fixed to the link mechanism above the center of the door and A solid fuel combustion device according to claim 2 or 3, further comprising the above.

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