Power cut-off / supply device

Abstract

A power cut-off / supply device according to an embodiment may include: a first conductive portion; a second conductive portion; a first plate on which the first conductive portion and the second conductive portion are mounted; the second plate is provided with a conductor, and when the conductor moves in the vertical direction, the conductor is in contact with and electrically connected with the first conductive part and the second conductive part; a guide that supports the second plate below, has a plurality of support positions of different heights, and moves the second plate in the vertical direction by moving a position in contact with the second plate from any of the plurality of support positions to another of the plurality of support positions when the guide moves in a guide direction traversing the vertical direction; and a diaphragm disposed adjacent to the guide so as to receive the pressure of a fluid flowing through an external duct, and to move the guide in the guide direction on the basis of shape deformation caused by the pressure.

Description

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Korean Patent Application No. 10-2022-0071749 filed on June 13, 2022, and all contents described in the specification and drawings of that application are incorporated herein by reference. Technical Field

[0004] The present application relates to a power cut-off-supply device. Background Art

[0005] Boilers and other devices heat water through internal heating elements, etc., and the heated water can be used to supply heating or hot water. However, if the temperature of the heating element rises above a specified temperature, it may cause safety problems such as device damage or fire, so further temperature rise and overheating need to be suppressed.

[0006] According to the prior art, in order to control the temperature of the internal heating body, a safety device such as an overheat preventer or a fuse is used. In addition, the above-mentioned safety device needs to be replaced periodically for durability, or if the fuse breaks due to overheating, it must be replaced. Summary of the invention

[0007] Problems to be solved by the invention

[0008] The technical problem to be solved by the present invention is to provide a power cut-off-supply device which can effectively cut off or supply power in response to overheating.

[0009] Means used to solve problems

[0010] According to one embodiment, the power cut-off-supply device may include: a first conductive part; a second conductive part; a first plate on which the first conductive part and the second conductive part are installed; a second plate on which a conductor is provided, and when the conductor moves in the up-down direction, it contacts and is electrically connected with the first conductive part and the second conductive part; a guide member, which supports the second plate member at the bottom and has a plurality of supporting positions of different heights, and when it moves in a guiding direction transverse to the up-down direction, the contact position with the second plate member moves from any one of the plurality of supporting positions to another position, thereby causing the second plate member to move along the up-down direction; and a diaphragm, which is arranged adjacent to the guide member to bear the pressure of the fluid flowing in the external pipe, and based on the shape deformation caused by the pressure, causes the guide member to move in the guiding direction.

[0011] Effects of the Invention

[0012] According to the embodiment of the present invention, power can be effectively cut off or supplied in response to overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figures 1 to 4 is a schematic diagram of a power cut-off-supply device according to an embodiment of the present invention.

[0014] Figure 5 2 is an exploded perspective view of a power cutoff-supply device according to an embodiment of the present invention.

[0015] Figure 6 1 is a longitudinal sectional view showing a state where a power cutoff-supply device according to an embodiment of the present invention supplies power.

[0016] Figure 7 1 is a longitudinal sectional view showing a state where the power cutoff-supply device according to an embodiment of the present invention cuts off power.

[0017] Figure 8 is a schematic diagram of a hot water supply system according to an embodiment of the present invention.

[0018] Figures 9 to 12 is a schematic diagram of a power cut-off-supply device according to another embodiment of the present invention.

[0019] Fig.13 is an exploded perspective view of a power cutoff-supply device according to another embodiment of the present invention.

[0020] Fig.14 It is a longitudinal cross-sectional view showing a state where the power cutoff-supply device according to another embodiment of the present invention cuts off power.

[0021] Fig.15 It is a longitudinal cross-sectional view showing a state where a power cutoff-supply device according to another embodiment of the present invention supplies power.

[0022] Fig.16 is a schematic diagram of a hot water supply system according to another embodiment of the present invention. DETAILED DESCRIPTION

[0023] Hereinafter, some embodiments of the present invention are described in detail with reference to the accompanying drawings. When assigning reference numerals to the components of each of the accompanying drawings, the same components are assigned the same reference numerals as much as possible even if they are shown in different drawings. In addition, when describing the embodiments of the present invention, if it is considered that the specific description of the relevant known structure or function hinders the understanding of the embodiments of the present invention, its detailed description will be omitted.

[0024] Figures 1 to 4 is a schematic diagram of a power cut-off-supply device 10 according to an embodiment of the present invention. Specifically, Figure 1It is a perspective view of the power cutoff-supply device 10 . Figure 2 It is a top view of the power cutoff-supply device 10 . Figure 3 and Figure 4 1 is a side view of the power cut-off-supply device 10 viewed from different directions. Figures 1 to 4 The power cutoff-supply device 10 will be described.

[0025] The power cut-off-supply device 10 may include a main body 100. The main body 100 forms a part of the appearance of the power cut-off-supply device 10. For example, the upper portion of the main body 100 is open, and the inside and the outside can be communicated through the upper portion. In addition, the main body 100 may include an inner space defined by an inner side surface.

[0026] The power cutoff-supply device 10 may include a diaphragm mounting portion 101. A diaphragm 160 described later may be mounted on the diaphragm mounting portion 101. The diaphragm mounting portion 101 may be coupled to one side of the body 100. For example, the diaphragm mounting portion 101 may be coupled to one side of the body 100 with the diaphragm 160 described later placed in the middle.

[0027] The power cut-off-supply device 10 may include a pipe connection portion 102. The pipe connection portion 102 may be coupled to one side of the diaphragm mounting portion 101. For example, the pipe connection portion 102 may be coupled to the side opposite to the body 100 (or the diaphragm mounting portion 101) with the diaphragm mounting portion 101 as a reference. The pipe connection portion 102 may be connected to an external pipe through which a fluid flows. The fluid flowing in the external pipe may flow to the diaphragm mounting portion 101 through the pipe connection portion 102.

[0028] The power cut-off-supply device 10 may include a first plate 110. The first plate 110 may cover at least a portion of the open upper portion of the main body 100. For example, the first plate 110 may be bolted to the upper portion of the main body 100 to cover a portion of the upper portion of the main body 100. The conductive part 130 described later may be coupled to the first plate 110. For example, a groove corresponding to the shape of the conductive part 130 may be formed on the first plate 110 to facilitate coupling of the conductive part 130 described later.

[0029] The power cutoff-supply device 10 may include a second plate 120. At least a portion of the second plate 120 is located in the internal space of the main body 100. The second plate 120 can move in the internal space of the main body 100 in the up-down direction. The up-down direction may be a general term for the upper and lower sides, and hereinafter, the up-down direction, the upper side, and the lower side may be appropriately used as needed.

[0030] The power cut-off-supply device 10 may include a conductive part 130. The conductive part 130 may include a plurality of conductive parts. For example, the conductive part 130 may include a first conductive part 131 and a second conductive part 132. The first conductive part 131 and the second conductive part 132 may be installed on the first plate 110 in an electrically separable manner. For example, the first conductive part 131 is installed on one side of the first plate 110, and the second conductive part 132 is installed on the other side of the first plate 110, and the first conductive part 131 and the second conductive part 132 may be electrically separated.

[0031] The power cutoff-supply device 10 may include a lever 140. The lever 140 may be provided to be rotatable (or rotatable) in the internal space of the body 100. The lever 140 may press a portion of the second plate 120 by rotating, and the second plate 120 may move in the up-down direction by the pressing of the lever 140. For example, in the case where the lever 140 presses the second plate 120 from the bottom to the top, the second plate 120 may move upward.

[0032] Figure 5 2 is an exploded perspective view of a power cutoff-supply device 10 according to an embodiment of the present invention. The above description of the power cutoff-supply device 10 is also applicable to the present embodiment in the same or similar manner.

[0033] The power cutoff-supply device 10 may include a first plate 110 and a conductive portion 130. The first plate 110 may be disposed on an upper side of a second plate 120 described later. The first plate 110 may be coupled to the body 100 to cover at least a portion of an opening formed at an upper portion of the inner space of the body 100.

[0034] The conductive part 130 may include a first conductive part 131 and a second conductive part 132, and may be mounted on the first plate 110. For example, the first conductive part 131 and the second conductive part 132 are arranged between one side and the other side of the first plate 110, and may be electrically separated. The first conductive part 131 and the second conductive part 132 may be installed to cover the lower part of the first plate 110. The first conductive part 131 may be installed to cover the lower part of the first plate 110 while covering a part of the side and the upper part. The first conductive part 131 may be clamped and mounted on the first plate 110 in a shape similar to a "U". The second conductive part 132 may be mounted on the first plate 110 on the side opposite to the mounting position of the first conductive part 131, but is not limited thereto. The second conductive part 132 may be installed to cover the lower part (or the lower surface) of the first plate 110. The second conductive portion 132 may be installed to cover the lower portion (or lower surface) of the first plate 110 while covering a portion of the side portion (or side surface) and the upper portion (or upper surface). The second conductive portion 131 may be clamped and installed on the first plate 110 in a "U" shape.

[0035] The above description of the first conductive portion 131 and the second conductive portion 132 is an example. As long as the first conductive portion 131 and the second conductive portion 132 are mounted on the first plate 110 in an electrically separated manner, they are not subject to the above limitation.

[0036] The power cutoff-supply device 10 may include a second plate 120 and a conductor 121. The second plate 120 may be disposed on the lower side of the first plate 110. The conductor 121 may be disposed on the upper portion of the second plate 120. When the conductor 121 moves in the up-down direction, it contacts the first conductive portion 131 and the second conductive portion 132 and electrically connects the first conductive portion 131 and the second conductive portion 132.

[0037] When viewed in the up-down direction, the conductor 121 may include an area overlapping with the first conductive portion 131 and the second conductive portion 132. For example, the first conductive portion 131 and the second conductive portion 132 may be mounted on the first plate 110 to cover at least a portion of the surface of the first plate 110 opposite to the surface of the second plate 120 on which the conductor 121 is disposed. In other words, the first conductive portion 131 and the second conductive portion 132 may be mounted on the first plate 110 to cover a portion of the surface (e.g., the lower surface) of the first plate 110 opposite to the surface (e.g., the upper surface) of the second plate 120 on which the conductor 121 is disposed. The second plate 120 and the conductor 121 may be disposed in the internal space of the body 100.

[0038] The power cutoff-supply device 10 may include a spacing elastic member 210. The spacing elastic member 210 may be disposed between the first plate 110 and the second plate 120. The spacing elastic member 210 may be disposed between the first plate 110 and the second plate 120, thereby forming a spacing between the first conductive portion 131 and the second conductive portion 132 and the conductor 121. The spacing elastic member 210 may also form a spacing between the first plate 110 and the second plate 120. The spacing elastic member 210 may be disposed in the internal space of the body 100.

[0039] The power cutoff-supply device 10 may include a supporting elastic member 220. The supporting elastic member 220 may be disposed between the second plate 120 and the conductor 121. The supporting elastic member 220 may elastically support the conductor 121. The conductor 121 is supported by the supporting elastic member 220, so that a change in the contact area of ​​the conductor 121 with the first conductive portion 131 and the second conductive portion 132 can be suppressed. In other words, the conductor 121 is supported by the supporting elastic member 220, so that it can stably contact the first conductive portion 131 and the second conductive portion 132. The supporting elastic member 220 may be disposed in the internal space of the body 100.

[0040] The power cut-off-supply device 10 may include a lever 140. The lever 140 may be rotatably disposed on the body 100. For example, the lever 140 may be disposed adjacent to the second plate 120 so that a portion of the second plate 120 is located within the rotation radius of the lever 140. The lever 140 may be disposed on the lower side of the second plate 120 so that the second plate 120 moves upward. For example, the lever 140 may press a portion of the second plate 120 within the rotation radius upward when rotating. If a portion of the second plate 120 is pressed by the rotation of the lever 140, the second plate 120 may move upward. At least a portion of the lever 140 may be disposed in the internal space of the body 100. A portion of the lever 140 is disposed in the internal space of the body 100, and another portion may protrude to the outside of the body 100. In the case where the other portion of the lever 140 is pressed from the outside, the lever 140 may rotate with the central axis of the internal space of the body 100 as a reference. The above contents are examples, and the present invention is not limited thereto.

[0041] The power cut-off-supply device 10 may include a guide 150. The guide 150 may support the second plate 120. For example, the guide 150 may be arranged on the lower side of the second plate 120 to support the second plate 120 below. The position where the second plate 120 contacts when supported by the guide 150 may be represented as the contact position of the second plate 120. And, the contact position of the second plate 120 may be one of the supporting positions of the guide 150. The guide 150 may be formed with a height difference (or a step difference) along the guide direction. For example, the guide 150 may have a plurality of supporting positions with different heights. In the case where the guide 150 moves in the guide direction transverse to the up-down direction, the contact position with the second plate 120 moves from any one of the plurality of supporting positions to another position, so that the second plate 120 can move in the up-down direction. In other words, the guide 150 may be provided with a supporting surface with a height difference, and the supporting surface includes a plurality of supporting positions. Alternatively, the guide 150 may be formed with a support surface having a height difference with respect to a prescribed boundary in the guiding direction.

[0042] The guide 150 is disposed in the internal space of the body 100 and may be disposed adjacent to the diaphragm 160 described later. Alternatively, the guide 150 may be disposed in contact with the diaphragm 160 .

[0043] The power cut-off-supply device 10 may include a guide elastic member 230. The guide elastic member 230 may elastically support the guide 150. For example, the guide elastic member 230 may be formed to surround the guide 150 and extend along the guide direction. The guide direction may be a predetermined direction that crosses the up-down direction. For example, the guide direction may be a direction perpendicular to the up-down direction, or a direction that crosses the up-down direction at a predetermined angle.

[0044] The power cut-off-supply device 10 may include a main body 100, and the inner side surface of the main body 100 may form an internal space. A diaphragm mounting portion 101 may be combined on one side of the main body 100. A pipe connecting portion 102 may be combined on one side of the diaphragm mounting portion 101. It should be noted that the above content is an example, and the diaphragm mounting portion 101 and the pipe connecting portion 102 may be formed as one body.

[0045] The power cutoff-supply device 10 may include a diaphragm 160. For example, the diaphragm 160 may be disposed between the main body 100 and the diaphragm mounting portion 101. Furthermore, the diaphragm 160 may be disposed adjacent to the guide 150 disposed in the internal space of the main body 100. The main body 100 may be provided with a hole so that the diaphragm 160 contacts the guide 150 as the shape is deformed, or the diaphragm 160 pushes the guide 150 in the guide direction as the shape is deformed. In other words, the diaphragm 160 may physically and mechanically transmit pressure to the guide 150 through the hole formed in the main body 100. The diaphragm 160 may deform in shape in accordance with external pressure. For example, the diaphragm 160 may be connected to an external pipe through the pipe connection portion 102. If the temperature of the fluid flowing in the external pipe and the pipe connection portion 102 rises, pressure may be applied to the diaphragm 160 as the fluid expands thermally.

[0046] If the thermal expansion of the fluid causes the pressure of the fluid to be transmitted to the diaphragm 160, the diaphragm 160 may be deformed in shape in the guide direction. In the case where the diaphragm 160 is in a disc shape, the center portion of the disc shape may be deformed toward the position where the guide 150 is located. It should be noted that the shape of the diaphragm 160 is an example and the present invention is not limited thereto.

[0047] Figure 6 1 is a longitudinal sectional view showing a state where the power cutoff-supply device 10 according to an embodiment of the present invention supplies power. Figure 7 1 is a longitudinal cross-sectional view showing a state where the power cutoff-supply device 10 according to an embodiment of the present invention cuts off power.

[0048] In the following, refer to Figure 6 to Figure 7 The state in which the power cutoff-supply device 10 supplies power or cuts off power will be described. The above description is also applicable to the present embodiment in the same or similar manner.

[0049] The second plate 120 may include an extension 120-1. Also, the second plate 120 may include a second plate body 120-2. For example, the extension 120-1 may extend from the second plate body 120-2 toward the guide 150 to be supported by the guide 150. In other words, the extension 120-1 may be a portion extending from the second plate body 120-2 toward the guide 150. In this case, the portion supported by the guide 150 may be the extension 120-1. Also, the contact position on the guide of the second plate 120 may be the contact position of the extension 120-1.

[0050] The second plate 120 may include a receiving space 122-1. The receiving space 122-1 may receive the conductor 121 and the supporting elastic member 220. For example, the receiving space 122-1 is formed by the second plate body 120-2 being recessed in the up-down direction to receive the conductor 121 and the supporting elastic member 220.

[0051] The second plate 120 may include a snap-fit ​​portion 122-2. For example, the snap-fit ​​portion 122-2 may be provided at an opening of the accommodation space 122-1 formed toward the first plate 110, so that the conductor 121 snaps in a direction transverse to the up-down direction. In other words, the snap-fit ​​portion 122-2 may be formed at an opening of the second plate 120 that is open upward, so that the conductor 121 snaps in a direction transverse to the up-down direction. For another example, the snap-fit ​​portion 122-2 may protrude from the second plate body 120-2 in a direction transverse to the up-down direction.

[0052] The guide 150 may include a pressure transmitting portion 151. The pressure transmitting portion 151 may be disposed adjacent to the diaphragm 160 to receive fluid pressure. A portion of the pressure transmitting portion 151 may be configured in the shape of a hole formed through the body 100, but is not limited thereto.

[0053] The guide member 150 may include a connection portion 152. The connection portion 152 may connect the pressure transmission portion 151 and the support step portion 153 described later. The connection portion 152 may be formed to extend along the guide direction. The connection portion 152 may include a protrusion 152-1. The protrusion 152-1 may protrude in the outer direction of the guide direction. In other words, the protrusion 152-1 may be a portion protruding from the connection portion 152 in a direction transverse to the guide direction between the pressure transmission portion 151 and the support step portion 153.

[0054] The protrusion 152-1 may be formed closer to the pressure transmitting portion 151 than the support step portion 153 described later. Also, the protrusion 152-1 may be formed at the boundary between the pressure transmitting portion 151 and the connecting portion 152. The protrusion 152-1 may be provided to engage with the main body 100 to suppress the guide 150 from pressing the diaphragm 160. For example, the protrusion 152-1 may be larger in diameter than the hole formed in the main body 100, and thus may be engaged with the main body 100 without passing through the hole. The guide 150 may not be drawn out of the main body 100 due to the protrusion 152-1.

[0055] The guide member 150 may include a support step portion 153. For example, the support step portion 153 may be formed with a height difference (or step difference) along the guide direction with a prescribed boundary as a reference. In other words, the support step portion 153 may be formed with a support surface including a plurality of support positions. The support surface may be formed with a height difference. The support surface may be a support surface of the guide member 150 that supports the second plate 120 (or the extension 120-1). On the support step portion 153, if the support position supporting the second plate 120 (or the extension 120-1) changes, the second plate 120 may move in the up-down direction. For example, on the support step portion 153, when the contact position of the second plate 120 changes across the support surface, the second plate 120 may move in the up-down direction.

[0056] The power cutoff-supply device 10 may include a supporting elastic member 230. For example, the supporting elastic member 230 may be disposed between the protrusion 152-1 and a portion of the body 100. The supporting elastic member 230 may be supported by a portion of the body 100. The supporting elastic member 230 may be supported by a portion of the body 100, thereby elastically supporting the protrusion 152-1.

[0057] Figure 6 The power cut-off-supply device 10 may be in a state of supplying power.

[0058] The guide 150 may support the second plate 120 (or the extension 120-1) at a specified supporting position. For example, when the support step 153 of the guide 150 supports the second plate 120, the second plate 120 may be supported by a supporting surface having a relatively high height (e.g., a first height) among the supporting surfaces of the support step 153. The above-mentioned specified supporting position may be a supporting position on a supporting surface having a relatively high height (e.g., a first height) among the supporting surfaces of the support step 153. In this case, the conductor 121 provided on the second plate 120 may be in contact with the first conductive portion 131 and the second conductive portion 132 provided on the first plate 110. In the state where the conductor 121 is in contact with the first conductive portion 131 and the second conductive portion 132, the first conductive portion 131 and the second conductive portion 132 may be in an electrically connected state. The first conductive portion 131 and the second conductive portion 132 of the power cutoff-supply device 10 can be connected to external wiring (or electric wires) respectively, and the external wiring can also be electrically connected when the first conductive portion 131 and the second conductive portion 132 are electrically connected.

[0059] Figure 7 The power cut-off-supply device 10 may be in a power cut-off state.

[0060] When the fluid flowing in the external pipe expands due to temperature rise (or overheating), the thermal expansion pressure may be transmitted through the pipe connection portion 102 connected to the external pipe. In addition, the pressure caused by the thermal expansion may also be transmitted to the diaphragm 160.

[0061] When pressure is transmitted to the diaphragm 160, the shape of the diaphragm 160 may be deformed. For example, the diaphragm 160 may be deformed in the direction of pressure application, and the direction of pressure application may be the direction of pushing the guide 150. In the case where the guide 150 is pushed based on the shape deformation of the diaphragm 160, the support position of the guide 150 supporting the second plate 120 (or the extension 120-1) may be changed from the above-mentioned prescribed support position to a changed support position. For example, when the support step 153 of the guide 150 supports the second plate 120, the second plate 120 may be supported by a support surface having a relatively low height (for example, the second height) among the support surfaces of the support step 153. The above-mentioned changed support position may be a support position on a support surface having a relatively low height (for example, the second height) among the support surfaces of the support step 153.

[0062] As the height of the second plate 120 decreases, the conductor 121 disposed on the upper portion of the second plate 120 may be released from contact with the first conductive portion 131 and the second conductive portion 132. For example, when the guide 150 is pushed in the guide direction by the diaphragm 160, as the height of the second plate 120 in the vertical direction decreases, the conductor 121 may be separated from the first conductive portion 131 and the second conductive portion 132. In this case, the spacing elastic member 210 may form a spacing by elastically supporting the second plate 120 downward to maintain the state where the conductor 121 is separated from the first conductive portion 131 and the second conductive portion 132.

[0063] When the conductor 121 is not in contact with the first conductive portion 131 and the second conductive portion 132, the first conductive portion 131 and the second conductive portion 132 may be not electrically connected (or electrically separated). The first conductive portion 131 and the second conductive portion 132 of the power cutoff-supply device 10 may be connected to external wiring, respectively, and when the first conductive portion 131 and the second conductive portion 132 are not electrically connected, the external wiring may also be not electrically connected.

[0064] When the power supply device 10 is to be changed from a power supply state to a power supply state, the lever 140 may be used. When the lever 140 is rotated, a portion of the second plate 120 located within the rotation radius of the lever 140 may be pressed. For example, when the lever 140 is rotated, the extension portion 120-1 of the second plate 120 may be pressed upward.

[0065] When the extension portion 120-1 of the second plate 120 is pressed upward, the second plate 120 can move upward. If the second plate 120 moves upward, the protrusion 152-1 of the guide member 150 is elastically pressed by the guide elastic member 230, so that the guide member 150 can return to the original position. Figure 6 In other words, the state in which the second plate 120 (or the extension 120-1) is supported by a support surface having a relatively low height (e.g., the second height) among the support surfaces of the support step 153 can be changed to a state in which the second plate 120 (or the extension 120-1) is supported by a support surface having a relatively high height (e.g., the first height) among the support surfaces of the support step 153.

[0066] Figure 8 Schematic diagram of a hot water supply system according to an embodiment of the present invention. The above description is also applicable to the present embodiment in the same or similar manner.

[0067] The hot water supply system 1 may include a heat exchanger, a flow sensor, a triac, and a main controller. The heat exchanger, the flow sensor, the triac, and the main controller are examples, and detailed descriptions of the components that may be generally included may be omitted, and are not limited to the above contents.

[0068] The hot water supply system 1 may include a power cut-off supply device 10. The power cut-off supply device 10 may supply or cut off power (or power supply). For example, a heat exchanger, a triac, a main controller, and the power cut-off supply device 10 may be connected through an electric wire. When the power cut-off supply device 10 cuts off power (or power supply), the power (or power supply) supplied to the heat exchanger, the triac, and the main controller may also be cut off.

[0069] The hot water supply system 1 can receive direct supply water to generate hot water. For example, the hot water supply system 1 can transfer the direct supply water to a heat exchanger, and the direct supply water that absorbs heat from the heat exchanger can become hot water.

[0070] The power cut-off-supply device 10 can be connected to a water pipe (or pipeline) in which direct supply water or hot water flows. When the direct supply water or hot water expands due to overheating and the temperature rises, the power cut-off-supply device 10 can supply or cut off the power (or power supply). As described above, the power cut-off-supply device 10 can effectively cut off or supply power in response to overheating.

[0071] The above-described hot water supply system 1 is an example to which the power cutoff-supply device 10 can be applied, but the present invention is not limited thereto.

[0072] Figures 9 to 12 FIG. 1 is a schematic diagram of a power cutoff-supply device 10 a according to another embodiment of the present invention.

[0073] The same or similar description as that of the power cutoff-supply device 10 is applicable to the power cutoff-supply device 10a. Hereinafter, the power cutoff-supply device 10a will be described with the focus on the differences from the power cutoff-supply device 10.

[0074] The power cutoff-supply device 10a may include a cover plate 103a. The cover plate 103a may form a part of the appearance of the power cutoff-supply device 10a. The cover plate 103a may at least partially cover the opening of the upper portion of the main body 100a and be coupled to the upper portion of the main body 100a.

[0075] The power cutoff-supply device 10a may include a first plate 110a and a second plate 120a. The first plate 110a and the second plate 120a may be disposed on the lower side of the cover plate 103a. Also, the first plate 110a may be disposed on the lower side than the second plate 120a.

[0076] The power cut-off-supply device 10a may include a conductive portion 130a. The conductive portion 130a may include a first conductive portion 131a and a second conductive portion 132a. The first conductive portion 131a and the second conductive portion 132a may be mounted on the first plate 110a. For example, the first conductive portion 131a and the second conductive portion 132a may be mounted on the first plate 110a so as to be electrically separated. At least a portion of the first conductive portion 131a and the second conductive portion 132a may be exposed outside the power cut-off-supply device 10a so as to be connected to an external wiring (or wire).

[0077] The power cutoff-supply device 10a may include a conductor 121a. For example, the conductor 121a may be provided on the lower side of the second plate 120a.

[0078] Fig.13 1 is an exploded perspective view of a power cut-off-supply device 10a according to another embodiment of the present invention. The power cut-off-supply device 10a can be applied to the same or similar description as the power cut-off-supply device 10, and the above description of the power cut-off-supply device 10a can also be applied to the present embodiment in the same or similar manner. Hereinafter, the power cut-off-supply device 10a will be described with the focus on the differences from the power cut-off-supply device 10.

[0079] The power cut-off-supply device 10a may include a cover plate 103a and a second plate 120a. The cover plate 103a may be arranged on the upper side of the second plate 120a at a predetermined distance. The cover plate 103a may cover at least a portion of the open upper portion of the main body 100a. The cover plate 103a may be fixedly coupled to the upper portion of the main body 100a. The second plate 120a is arranged on the lower side of the cover plate 103a and may include an extension portion (e.g., Fig.14 Extension 120-1a). Extension (e.g., Fig.14 The extended portion 120-1a) may penetrate and transversely extend the first plate 110a, but is not limited thereto.

[0080] The power cut-off-supply device 10a may include a pressing elastic member 240a. The pressing elastic member 240a may be disposed between the cover plate 103a and the second plate 120a. When the conductor 121a contacts the first conductive portion 131a and the second conductive portion 132a, the pressing elastic member 240a may be disposed between the cover plate 103a and the second plate 120a to press the second plate 120a in order to prevent the contact from being released.

[0081] The power cut-off-supply device 10a may include a conductor 121a. The conductor 121a may be disposed on the lower side of the second plate 120a. For example, the conductor 121a may be disposed on the lower side of the second plate 120a to be opposite to the conductive portion 130a. The conductor 121a may be bolted to the lower side of the second plate 120a, but there is no particular limitation on the bonding method. The conductor 121a may include an area overlapping with the conductive portion 130a in the up-down direction. For example, the conductor 121a may include an area overlapping with the first conductive portion 131a and the second conductive portion 132a in the up-down direction. In other words, when the second plate 120a moves in the up-down direction, the conductor 121a may be formed to contact the first conductive portion 131a and the second conductive portion 132a.

[0082] The power cut-off-supply device 10a may include a first plate 110a and a conductive portion 130a. The first plate 110a may be disposed on the lower side of the second plate 120a. The conductive portion 130a may be mounted on the first plate 110a. For example, the first conductive portion 131a and the second conductive portion 132a may be electrically separated and mounted on the first plate 110a to cover a portion of the upper portion of the first plate 110a. The first conductive portion 131a and the second conductive portion 132a may each have a portion of an area that can be in contact with the conductor 121a, and another portion of an area that can be connected to an external wiring.

[0083] When the conductor 121a is in contact with the above-mentioned partial area, the first conductive portion 131a and the second conductive portion 132a can be electrically connected. The above-mentioned partial area is an area of ​​the first conductive portion 131a and the second conductive portion 132a on the first plate 110a that can contact the conductor 121a. The area of ​​the first conductive portion 131a and the second conductive portion 132a exposed to the outside of the power cutoff-supply device 10a in a manner that can be connected to external wiring may include the above-mentioned other partial area.

[0084] The power cut-off-supply device 10a may include a lever 140a. The lever 140a may be disposed on the lower side of the first plate 110a. The lever 140a may be configured to be rotatable within the body 100a. The lever 140a may press an extension portion (e.g., Fig.14In other words, the extension of the second plate 120a (eg, Fig.14 At least a portion of the extension 120-1a) is located within the rotation radius of the lever 140a.

[0085] Fig.14 1 is a longitudinal sectional view showing a state where a power cutoff-supply device 10 a according to another embodiment of the present invention is cutoff. Fig.15 1 is a longitudinal sectional view showing a state where a power cutoff-supply device 10 a according to another embodiment of the present invention supplies power.

[0086] In the following, refer to the attached Figure 14 to Figure 15 The state in which the power cutoff-supply device 10a cuts off power or supplies power will be described. The above description is also applicable to the present embodiment in the same or similar manner.

[0087] The second plate 120a may include an extension portion 120-1a. For example, the extension portion 120-1a is extended toward the guide member 150a to be supported by the guide member 150a.

[0088] Fig.14 The power cut-off-supply device 10a may be in a power cut-off state. The guide 150a may support the second plate 120a (or the extension 120-1a) at a specified support position. For example, when the support step 153a of the guide 150a supports the second plate 120a, the second plate 120a may be supported by a support surface having a relatively high height (e.g., a first height) among the support surfaces of the support step 153a. The above-mentioned specified support position may be a support position on a support surface having a relatively high height (e.g., a first height) among the support surfaces of the support step 153a. In this case, the conductor 121a provided on the second plate 120a may be in a state where it is not in contact with the first conductive portion 131a and the second conductive portion 132a provided on the first plate 110a. In other words, the conductor 121a may be in a state where it is separated from the first conductive portion 131a and the second conductive portion 132a. When the conductor 121 a is not in contact with the first conductive portion 131 a and the second conductive portion 132 a , the first conductive portion 131 a and the second conductive portion 132 a may be not electrically connected.

[0089] Fig.15 The power cut-off-supply device 10a can be in a state of supplying power. The above description can also be applied to this embodiment in the same or similar manner.

[0090] When the fluid flowing in the external pipe expands with the increase of temperature (or overheating), the heat expansion pressure can be transmitted through the pipe connection part 102a connected to the external pipe. In addition, the pressure caused by the heat expansion can also be transmitted to the diaphragm 160a. When the guide 150a is pushed in the guiding direction by the diaphragm 160a, as the height of the second plate 120a in the vertical direction becomes lower, the conductor 121a can contact the first conductive part 131a and the second conductive part 132a.

[0091] When the pressure caused by thermal expansion is transmitted to the diaphragm 160a, the shape deformation of the diaphragm 160a may occur. For example, the diaphragm 160a may be deformed in the pressure direction, and the pressure direction may be the direction of the push guide 150a. In the case where the guide 150a is pushed based on the shape deformation of the diaphragm 160a, the support position of the guide 150a supporting the second plate 120a (or the extension 120-1a) may be changed from the above-mentioned prescribed support position to a changed support position. For example, when the support step 153a of the guide 150a supports the second plate 120a, the second plate 120a may be supported by a support surface having a relatively low height (e.g., the second height) in the support surface of the support step 153a. The above-mentioned changed support position may be a support position on a support surface having a relatively low height (e.g., the second height) in the support surface of the support step 153a.

[0092] As the height of the second plate 120a decreases, the conductor 121a provided at the lower portion of the second plate 120a may contact the first conductive portion 131a and the second conductive portion 132a. For example, in the case where the guide 150a is pushed in the guiding direction by the diaphragm 160a, as the height of the second plate 120a in the up-down direction decreases, the conductor 121a may contact the first conductive portion 131a and the second conductive portion 132a. In this case, the pressing elastic member 240a may elastically support the second plate 120a. For example, by pressing the elastic member 240a to elastically support the second plate 120a downward, the conductor 121a may be maintained in a state of contact with the first conductive portion 131a and the second conductive portion 132a or supported in a manner that suppresses the contact from being released.

[0093] When the conductor 121a is in contact with the first conductive part 131a and the second conductive part 132a, the first conductive part 131a and the second conductive part 132a may be electrically connected. The first conductive part 131a and the second conductive part 132a of the power cutoff-supply device 10a may be connected to external wiring, respectively, and when the first conductive part 131a and the second conductive part 132a are electrically connected, the external wiring may also be electrically connected.

[0094] When the power supply device 10a is intended to be changed from a state in which power is supplied to a state in which power is cut off, the lever 140a may be used. When the lever 140a is rotated, a portion of the second plate 120a (or the extension 120-1a) located within the rotation radius of the lever 140a may be pressed. For example, when the lever 140a is rotated, the extension 120-1a of the second plate 120a may be pressed upward. When the extension 120-1a of the second plate 120a is pressed upward, the second plate 120a may be moved upward.

[0095] If the second plate 120a moves upward, the guide elastic member 230a elastically presses the protrusion 152-1a of the guide member 150a, so that the guide member 150a can return to the original position. Fig.14 In other words, the second plate 120a (or the extension 120-1) can be supported by a support surface having a relatively low height (e.g., the second height) among the support surfaces of the support step 153a, and the second plate 120a (or the extension 120-1a) can be supported by a support surface having a relatively high height (e.g., the first height) among the support surfaces of the support step 153a. In this case, the conductor 121a can be spaced apart from the first conductive portion 131a and the second conductive portion 132a.

[0096] When the conductor 121a is spaced apart from the first conductive portion 131a and the second conductive portion 132a, the first conductive portion 131a and the second conductive portion 132a are electrically separated, thereby also electrically separating the external wiring. By electrically separating the first conductive portion 131a and the second conductive portion 132a, the power cut-off and supply device 10a can be in a power-cut-off state.

[0097] Fig.16 2 is a schematic diagram of a hot water supply system 1a according to another embodiment of the present invention. The above description is also applicable to this embodiment in the same or similar manner.

[0098] The hot water supply system 1a may include a heat exchanger, a heat radiator, a fan, a flow sensor, a triac, a terminal, and a main controller. The heat exchanger, the heat radiator, the fan, the flow sensor, the triac, and the main controller are examples, and detailed descriptions of the components that may be generally included may be omitted, and are not limited to the above contents.

[0099] The hot water supply system 1a may include a power cut-off-supply device 10a. The power cut-off-supply device 10a can supply or cut off power (or power supply). For example, the power cut-off-supply device 10 and the fan can be connected by an electric wire. In the case where the power cut-off-supply device 10a supplies power (or power supply), power (or power supply) to the fan can also be provided. In particular, in the case of thermal expansion caused by temperature rise, power (or power supply) is supplied to the fan by the power cut-off-supply device 10a, so that the fan is operated to reduce the temperature. In other words, in the case where the temperature rises due to overheating and the direct supply water or hot water expands thermally, the power cut-off-supply device 10a supplies power (or power supply) to operate the fan. As described above, the power cut-off-supply device 10a can effectively cut off or supply power in response to overheating.

[0100] The above-described hot water supply system 1 a is an example to which the power cutoff-supply device 10 a can be applied, and the present invention is not limited thereto.

[0101] The above description is only an illustrative description of the technical idea of ​​the present invention, and those skilled in the art can make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention, but to illustrate, and the scope of the technical idea of ​​the present invention is not limited to these embodiments. The protection scope of the present invention should be interpreted according to the following claims, and all technical ideas within the equivalent scope thereof should be interpreted as being included in the scope of rights of the present invention.

Claims

1. A power cut-off-supply device, comprising: a first conductive portion; a second conductive portion; a first plate, on which the first conductive part and the second conductive part are mounted; A second plate member is provided with a conductor, and when the conductor moves in either the up and down directions, the conductor contacts the first conductive part and the second conductive part, thereby electrically connecting the first conductive part and the second conductive part; a guide member supporting the second plate member at a lower side and having a plurality of supporting positions at different heights, wherein when the guide member moves in a guide direction transverse to the up-down direction, a contact position with the second plate member moves from any one of the plurality of supporting positions to another position, thereby causing the second plate member to move in the up-down direction; as well as The diaphragm is disposed adjacent to the guide member to receive the pressure of the fluid flowing in the external pipe and deforms in shape due to the pressure to move the guide member in the guide direction.

2. The power cut-off and supply device according to claim 1, wherein: The first conductive portion and the second conductive portion are mounted on the first plate in an electrically separate manner.

3. The power cut-off and supply device according to claim 1, wherein: The guide member comprises: A support step portion, formed with a support surface having a height difference, wherein the plurality of support positions are respectively included in the support surface; Wherein, when the contact position on the support step portion is deformed, the second plate moves along the up-down direction.

4. The power cut-off-supply device according to claim 1, further comprising: The spacing elastic member is arranged between the first plate and the second plate.

5. The power cut-off-supply device according to claim 1, further comprising: The supporting elastic member is disposed between the first plate and the second plate and elastically supports the conductor.

6. The power cut-off and supply device according to claim 5, wherein: The second plate comprises: a second plate body; a receiving space formed by the second plate body being recessed in the up and down directions and receiving the conductor and the supporting elastic member; and a snap-fitting portion protruding from the second plate body to snap-fit ​​the conductor at the opening on the first plate side of the receiving space.

7. The power cut-off and supply device according to claim 1, wherein: The second plate comprises: The extension portion extends toward the guide member to be supported by the guide member.

8. The power cut-off and supply device according to claim 1, wherein: The guide member comprises: A pressure transmission part, disposed adjacent to the diaphragm to receive the fluid pressure; A supporting step portion having a step difference formed along the up-down direction; and The connecting portion connects the pressure transmitting portion and the support step portion and is formed with a protruding portion protruding in a direction transverse to the guide direction between the pressure transmitting portion and the support step portion.

9. The power cut-off-supply device according to claim 8, further comprising: The main body, forming part of the exterior; as well as The guide elastic member is disposed between the protrusion and a portion of the body and supported by the portion of the body to elastically support the protrusion.

10. The power cut-off-supply device according to claim 1, further comprising: The lever is configured to be rotatable, and a portion of the second plate is located within the rotation radius of the lever, so that a portion of the second plate can be pressed along the up-down direction when rotating.

11. The power cut-off and supply device according to claim 10, wherein: The lever is rotatable to press a portion of the second plate upward in a state where the first conductive portion and the second conductive portion are separated from the conductor, thereby bringing the first conductive portion and the second conductive portion into contact with the conductor.

12. The power cut-off and supply device according to claim 1, wherein: The first conductive portion and the second conductive portion are mounted on the first plate to cover at least a surface of the first plate that is opposite to a surface of the second plate on which the conductor is disposed.

13. The power cut-off and supply device according to claim 1, wherein: The first plate is disposed on an upper side of the second plate; and The conductor is disposed on an upper portion of the second plate.

14. The power cut-off and supply device according to claim 1, wherein: When the guide is pressed by the diaphragm in the guide direction, the conductor changes from being in contact with the first conductive portion and the second conductive portion to being separated from the first conductive portion and the second conductive portion as the height of the second plate decreases.

15. The power cut-off and supply device according to claim 1, wherein: The first plate is disposed on a lower side of the second plate; and The conductor is disposed at a lower portion of the second plate.

16. The power cut-off and supply device according to claim 15, wherein: When the guide is pressed by the diaphragm in the guide direction, the conductor changes from being spaced apart from the first conductive portion and the second conductive portion to being in contact with the first conductive portion and the second conductive portion as the height of the second plate decreases.

17. The power cut-off-supply device according to claim 15, further comprising: A cover plate, spaced apart from and fixedly disposed above the second plate; as well as The pressing elastic member is disposed between the cover plate and the second plate and presses the second plate downward.

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