JP2012255588A - Gas appliance system, gas appliance, and gas pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the safe operation of a gas appliance body by connecting an adequate gas pipe to a gas pipe connection part while maintaining the simple structure of the gas pipe connection part.SOLUTION: A gas appliance includes: an operation allowance device mounting unit 51 which includes an operation allowance device 50 for receiving the operation based on the operation by an operation receiving unit in its mounted state, and can mount the operation allowance device 50; and an operation reception determining means which allows the operation of an appliance accompanied by the operation to the operation reception unit when the operation allowance device 50 is mounted to the operation allowance device mounting unit 51, and prohibits the operation of the appliance in spite of the operation to the operation reception unit when the operation allowance device is not mounted thereto.

Description

  The present invention relates to a gas pipe (referred to as a small-diameter reinforced gas hose) having a pipe joint at one end, a gas pipe connecting portion to which the gas pipe is connected, and fuel gas received from the gas pipe connecting portion together with combustion air. The gas device includes a combustion unit for burning and a gas device having a driving operation receiving unit for receiving a driving operation from the outside, and relates to a gas device system for determining whether or not the driving operation can be accepted by the driving operation receiving unit. The present invention relates to a gas device used in a gas device system, and further to a gas pipe.

2. Description of the Related Art Conventionally, gas equipment is configured to shift to an operation state in which fuel gas burns when a gas pipe that supplies fuel gas is connected to a gas pipe connection portion of the gas equipment body and receives an operation. (Refer to Patent Document 1).
In the gas apparatus described in Patent Document 1, in order to prevent the gas rubber tube from being erroneously connected to the gas pipe connection portion, the connection detection means for detecting the connection between the gas pipe connection portion and the pipe joint is a gas It has been proposed to provide a pipe connection.

JP 2006-83989 A

However, strict standards are determined by JIS or the like for the gas pipe connection portion from the viewpoint of preventing gas leakage and the like, and it is not preferable to provide the connection detection means as described above. In other words, the structure of the gas pipe connecting portion is preferably made as simple as possible from the viewpoint of reliably connecting the gas pipe with the pipe joint and preventing gas leakage.
On the other hand, from the viewpoint of proper connection between the gas pipe connecting portion and the gas pipe, it is necessary to prevent the incompatible gas rubber tube from being inserted into the gas pipe connecting portion and used. Specifically, it is necessary to prevent connection of a rubber tube for gas that does not include a pipe joint.
The present invention has been made in view of the above problems, and the object thereof is to connect an appropriate gas pipe to the gas pipe connecting portion while maintaining a simple structure of the gas pipe connecting portion. The object is to provide a gas equipment system, a gas equipment, and a gas pipe that can ensure safe operation.

A gas equipment system for achieving the above object is as follows:
A gas pipe with a pipe joint at one end;
A gas pipe connecting part to which the gas pipe is connected via the pipe joint, a combustion part for burning the fuel gas received from the gas pipe connecting part together with combustion air, and a driving operation receiving part for receiving a driving operation from outside Gas equipment having
A gas equipment system for determining whether or not to accept a driving operation to the driving operation receiving unit, the characteristic configuration is:
A driving allowance that allows the operation based on the driving operation received by the driving operation accepting unit to be installed in a mounted state is provided separately from the gas device, and the operation allowance that can be attached to the gas device Part
When the driving permission tool is mounted on the driving permission tool mounting portion, the device is allowed to drive with the driving operation to the driving operation receiving portion, and when the driving permission tool is not mounted, to the driving operation receiving portion. The operation operation acceptance determination means for prohibiting the operation of the device despite the operation operation is provided.

The gas equipment system having the above characteristic configuration is formed by a gas pipe, a gas equipment, and an operation permission tool. The driving operation acceptance determination means permits the driving of the device accompanying the driving operation to the driving operation receiving unit when the driving permission tool is mounted on the driving mounting unit, The operation of the equipment is prohibited regardless of the operation operation to the operation reception unit. That is, the gas equipment system of the present invention is configured such that the user cannot operate the gas equipment unless there is an operation permission tool.
If the gas equipment system is configured in this way, for example, if the equipment distributor distributes the operation permitting tool together with the gas pipe suitable for the gas pipe connecting portion of the gas equipment, the user can The tool is mounted on the operation permission tool mounting portion, and the gas pipe distributed together with the operation permission tool is normally connected to the gas pipe connection portion for use. That is, in this system configuration, even if a user tries to connect a gas rubber tube to a gas device, the user does not have an operation-permissible tool. Can not be used in connection with each other, and the use of a rubber tube for gas can be prevented.
As a result, while maintaining a simple structure of the gas pipe connection part, it is possible to connect the appropriate gas pipe to the gas pipe connection part and perform safe operation of the gas equipment body.

A further characteristic configuration of the gas equipment system according to the present invention is as follows:
The driving permission tool mounting portion is provided with a changeover switch that switches from a non-conductive state to a conductive state when the driving permission tool is mounted on the driving permission tool mounting portion.

  According to the above characteristic configuration, the changeover switch (contact switch, contactless switch, or the like) is configured to switch from the non-conductive state to the conductive state when the driving permission tool is mounted on the driving permission tool mounting portion. Therefore, the driving operation acceptance determination means can determine mounting of the driving permission tool on the driving permission tool mounting portion relatively easily based on the conduction state of the changeover switch.

According to a further characteristic configuration of the gas equipment system according to the present invention, the operation permission tool includes a conductive portion electrically connected therein,
The driving permission tool mounting part includes a contact terminal that switches from a non-conductive state to a conductive state via the conductive part when the driving permission tool is mounted on the driving permission tool mounting part. is there.

Regarding the configuration for detecting that the driving permission tool is mounted on the driving permission tool mounting part, for example, when the driving permission tool is mounted on the driving permission tool mounting part, A contact switch that switches between ON and OFF states can be considered. However, such a contact switch may be used improperly because the ON / OFF state is switched when mechanical operation is applied from the outside.
According to the above-described characteristic configuration, the contact terminal provided in the operation permission tool mounting portion adopts a configuration that switches from the non-conduction state to the conduction state through the conductive portion of the operation permission device. The ON / OFF state is not switched by mechanical operation, and it is possible to satisfactorily prevent unauthorized use.

  The further characteristic structure of the gas equipment system which concerns on this invention exists in the point provided with the connection member which connects the said operation permission tool and the said gas pipe | tube.

According to the above characteristic configuration, the operation permission tool can be connected to the gas pipe in advance by connecting the operation permission tool to the gas pipe by the connecting member, and the operation permission tool can be prevented from being lost.
Further, the user can be prompted to connect an appropriate gas pipe connected to the driving permission tool to the gas pipe connecting portion when the driving permission tool is mounted on the driving permission tool mounting portion.

A further characteristic configuration of the gas equipment system according to the present invention is such that the operation permission tool has a connection portion that connects the operation permission tool main body and the gas pipe,
The conductive portion of the driving permission tool has both end portions provided inside the driving permission tool body, and an intermediate portion between the both end portions is provided from one end to the other end inside the connecting portion. There is in point.

When the operation permission tool and the gas pipe are connected, the user may cut the connection portion between the operation permission tool and the gas pipe in order to remove and use only the operation permission tool.
According to the above characteristic configuration, the operation permission tool includes the connecting portion that connects to the gas pipe, and the conductive portion of the operation permission tool is provided at both ends thereof inside the operation permission tool body, and between the both ends. Since the intermediate portion is provided from one end to the other end inside the connecting portion, when the connecting portion is cut, the conductive portion inside the connecting portion is cut. When the conductive part is disconnected, even if the driving permission tool is mounted on the driving permission tool mounting part, the contact terminals of the driving permission tool mounting part are not in a conductive state, so that the operation of the device can be prohibited. .
That is, according to the above-described characteristic configuration, the user tries to operate the device illegally by cutting the connecting member, separating the operation permission tool and the gas pipe, and mounting only the operation permission tool on the operation permission tool mounting portion. In this case, the operation of the equipment can be prohibited.

A further characteristic configuration of the gas equipment system according to the present invention is as follows:
The operation permission device mounting portion is provided at a portion between the gas pipe connection portion and the combustion air suction port supplied to the combustion portion on the outer surface of the device body,
The conductive part of the operation permission tool is provided with a flame detection part that is disconnected when the flame generation determination threshold temperature is exceeded,
When the conductive part of the operation permission tool is disconnected, it is provided with an operation stop means for stopping the operation of the device.

If the gas equipment is in operation and sucking combustion air from the suction port, gas leakage will occur from the connection part of the gas pipe connection part and gas pipe, and the leaked gas will ignite and a flame will occur. The flame is guided from the gas pipe connection portion to the combustion air suction side.
According to the above characteristic configuration, since the operation permission tool mounting portion is provided at a portion between the gas pipe connection portion and the combustion air suction port, the operation permission tool is mounted on the operation permission tool mounting portion. When the flame is detected, the flame detection part of the driving permission tool is in a state in which the flame can be detected. And when the said flame detection site | part becomes more than a flame generation determination threshold temperature, a flame detection site | part is disconnected. As a result, the operation stopping means prohibits the operation of the gas device and can prevent the flame from burning and spreading.

Gas equipment that can achieve the above-mentioned object and that can realize the above-mentioned gas equipment system,
A gas that includes a combustion unit that burns fuel gas together with combustion air, and a driving operation reception unit that receives a driving operation from the outside, and that controls combustion of the combustion unit based on the driving operation received by the driving operation reception unit It is equipment, and the characteristic composition is
A driving permission tool mounting portion capable of mounting a driving permission tool that allows driving based on the driving operation received in the driving operation receiving section in a mounted state;
When the driving permission tool is mounted on the driving permission tool mounting portion, the device is allowed to drive with the driving operation to the driving operation receiving portion, and when the driving permission tool is not mounted, to the driving operation receiving portion. The operation operation acceptance determination means for prohibiting the operation of the device regardless of the operation operation is provided.

  In the gas equipment having the above-described characteristic configuration, as in the gas equipment system described above, an appropriate gas pipe is connected to the gas pipe connection section while maintaining a simple structure of the gas pipe connection section. Safe driving can be performed.

A gas pipe capable of achieving the above object and further realizing the above gas equipment system
A gas pipe connected via a pipe joint to a gas pipe connecting part provided in a gas device that controls the combustion of the combustion part based on the driving operation received by the driving operation receiving part.
A driving permission tool that can be mounted on a driving permission tool mounting portion provided in the gas appliance,
The driving permission tool is configured to allow driving based on a driving operation received by the driving operation receiving unit in a state of being mounted on the driving permission tool mounting unit.

  In the gas pipe having the above-mentioned characteristic configuration, the gas pipe connection portion of the gas equipment to be connected is maintained in a simple structure, but an appropriate gas pipe is connected to the gas pipe connection section so that the gas equipment main body can be operated safely. Can be executed.

It is a schematic block diagram of a driving permission tool and a driving permission tool mounting part. It is a schematic block diagram inside a gas apparatus. It is a schematic block diagram of the operation reception part of a gas apparatus. It is a block diagram which shows the control apparatus of gas equipment, and each apparatus of control object. It is a figure which shows the mounting state and non-mounting state to the driving permission tool mounting part of the driving permission tool in 1st Embodiment. It is a control flowchart of driving operation acceptance determination. It is a figure which shows the mounting state and non-mounting state to the driving permission tool mounting part of the driving permission tool in 2nd Embodiment. It is a figure which shows the driving permission tool and driving permission tool mounting part in 3rd Embodiment. It is a control flow figure concerning a 3rd embodiment. It is a figure which shows the driving | operation permission tool which concerns on another embodiment.

As shown in FIGS. 1 to 6, the gas equipment system 200 of the present invention is used by connecting a gas rubber pipe that is incompatible with the gas pipe connection section 53 to the gas pipe connection section 53 of the gas equipment 100. In order to prevent this, as an unprecedented characteristic configuration, in particular, the gas appliances are provided with operation permission tools 50 and 56 that allow operation based on the operation operation received by the operation operation reception unit 9 of the gas device 100 in the mounted state. 100 includes driving permission tool mounting portions 51 and 57 to which the driving permission tools 50 and 56 can be mounted, and when the user mounts the driving permission tools 50 and 56 on the driving permission tools mounting portions 51 and 57. As long as the operation of the gas appliance 100 is permitted, the operation operation acceptance determination is performed.
In the following, first, the basic configuration of the gas equipment system 200 will be described, and then the characteristic configuration of the present invention and control related to driving operation acceptance determination will be described.

[First Embodiment]
As shown in FIGS. 1, 2 (a) and 2 (b), the gas equipment system 200 of the present invention includes a gas pipe 52 having a pipe joint 54 at one end, and the gas pipe 52 is connected via the pipe joint 54. A gas pipe connecting portion 53 to be connected, a burner 2 (an example of a combustion portion) for burning the fuel gas G received from the gas pipe connecting portion 53 together with the combustion air A, and a driving operation receiving portion for receiving a driving operation from the outside. 9 and a gas apparatus 100 having the number 9.

As shown in FIGS. 2 (a) and 2 (b), the burner 2 is connected to a fuel gas passage 7 for guiding the fuel gas G, and the fuel gas G supplied from the fuel gas passage 7 The combustion air A sucked from the suction port 17 provided on the back surface of the main body 1 is ignited by the spark plug 13 to form a flame.
The fuel gas flow path 7 includes a first solenoid valve 8a and a second solenoid valve 8b that stop or allow the flow of the fuel gas G, a proportional valve 10 that can adjust the flow rate of the fuel gas G, and a fuel gas. An injection nozzle 11 that injects G toward the burner 2 while mixing with combustion air A is provided in order from the upstream side toward the downstream side. As described above, the reason why the two first electromagnetic valves 8a and the second electromagnetic valve 8b are provided as electromagnetic valves is that the fuel gas G leaks to the downstream side of the fuel gas flow path 7. This is to prevent more reliably.

  The convection fan 3 includes a cross flow fan 15 and a motor 16 that rotates the cross flow fan 15 in the circumferential direction. When the motor 16 rotates the cross flow fan 15, the outside air is taken in from the suction port 17, a part of which is led to the combustion chamber 18 of the burner 2 as combustion air A, and the other part is directed to the burner 2. Heated by the formed flame. Then, the combustion exhaust gas after combustion is blown out from the blower outlet 19 as warm air.

[Temperature sensor]
On the outer surface of the main body 1, an indoor temperature sensor 22 for measuring the indoor temperature is provided. The control device 4 to be described later controls the operation state of the burner 2 and the convection fan 3 based on the measurement result of the indoor temperature sensor 22.
The main body 1 is provided with a main body temperature sensor 23 that measures the internal temperature of the main body 1. The control device 4 can measure, for example, the main body temperature sensor 23 in an abnormally high temperature range. If it has reached, control such as stopping the burner 2 is performed.
Further, the circuit constituting the control device 4 of the main body 1 is provided with a thermal fuse that disconnects the circuit when the temperature inside the main body 1 becomes equal to or higher than the heat resistance temperature of the circuit. Thereby, when the temperature inside the main body 1 exceeds the heat resistance temperature of the circuit, the circuit can be disconnected to protect the circuit.

[Driving operation reception part]
As shown in FIG. 2A, a driving operation reception unit 9 that receives a driving operation from the outside is provided on the top surface of the main body 1.
As shown in FIG. 3, the driving operation reception unit 9 has a good night timer switch 26 that can be set to stop operation after a predetermined time as a switch operated by a user or the like. A good morning timer switch 27 capable of setting a start, a temperature / time setting switch 31 for setting a target temperature, a target operation time, and the like, an operation switch 32 for switching between an operation state and an operation stop state, and the like are provided.
On the other hand, as a display portion for informing the user of the state of the device, a setting display lamp 28 indicating that a good night timer and a good morning timer are set, a 7-segment display panel 29 indicating temperature, time, error status, etc. An operation display lamp 33 for indicating the state, an air filter cleaning lamp 35 that is turned on when dust or the like accumulates in the air filter 20 provided in the suction port 17 of the combustion air A, and the control device 4 includes the gas pipe connection portion 53. A gas pipe connection abnormality lamp 36 that is turned on when it is recognized that the gas pipe 52 is not normally connected, an emergency alarm lamp 37 that is turned on in an emergency such as a leaked gas is provided.
In addition, since control of lighting / flashing of each display unit and the like by the control device 4 when the above various switches are operated is substantially the same as that of a normal gas appliance, detailed description thereof will be omitted below.

[Operation allowance and operation allowance receiving part]
As shown in FIG. 1, the gas equipment system 200 according to the present invention is provided with a plug 50 (an example of a driving permission tool) that allows driving based on the driving operation received by the driving operation receiving unit 9 in the mounted state. A plug mounting portion 51 (an example of an operation permission device mounting portion) to which the plug 50 can be mounted is provided in the vicinity of the gas pipe connection portion 53 on the back surface of the main body 1.
In other words, as shown in FIGS. 5A and 5B, the plug 50 is provided with an insertion portion 50 a that is inserted into the plug mounting portion 51 when the plug 50 is mounted on the plug mounting portion 51. ing.
The plug mounting portion 51 has an opening 51a into which the insertion portion 50a can be inserted when the plug 50 is mounted on the plug mounting portion 51. Inside the opening 51a, when the insertion portion 50a is not inserted into the opening 51a (when in the state shown in FIG. 5A), the insertion portion 50a is inserted into the opening 51a. A contact switch 51b (an example of a changeover switch) is provided that is in a conductive state when the switch is in a state of being in the state shown in FIG. 5B.

  The contact switch 51b is electrically connected to the control device 4 (an example of the driving operation acceptance determination unit m1). Although details will be described later, the control device 4 is configured to be able to monitor whether or not the contact switch 51b is in a conductive state. When the contact switch 51b is in a conductive state, the control device 4 determines that the plug 50 is mounted on the plug mounting portion 51. In the non-conduction state, it is determined that the plug 50 is not attached to the plug attachment portion 51, and a driving operation acceptance determination described later is performed.

  The plug 50 is connected to the gas pipe 52 by a connecting member 55 in a state where it cannot be removed. Thereby, loss of the plug 50 can be prevented. In addition, by connecting the plug 50 to the gas pipe 52 that can be connected in conformity with the gas pipe connecting portion 53 in advance, the user can connect the gas pipe 52 that matches the gas pipe connecting portion 53 to the user. be able to.

〔Control device〕
As shown in FIG. 4, the control device 4 is electrically connected to each operation switch and each display unit of the driving operation reception unit 9, and an operation state is displayed on each display unit based on the operation of each operation switch. Is displayed, and the operation of the gas appliance 100 is controlled. The operation control of the gas device 100 by the control device 4 is not different from the conventional one.

When the plug 50 is attached to the plug attachment unit 51, the control device 4 allows the operation of the device accompanying the driving operation to the driving operation acceptance unit 9, and when the plug 50 is not attached, the driving operation acceptance unit 9 It functions as driving operation acceptance determination means m1 that prohibits the operation of the device despite the driving operation.
Specifically, the control device 4 (an example of the driving operation acceptance determination unit m1) is electrically connected to a contact switch 51b provided in the opening 51a of the plug mounting portion 51, and the contact switch 51b is electrically connected. When it is in the state (when it is in the state shown in FIG. 5B), it is determined that the plug 50 is attached to the plug attachment portion 51, and the gas pipe 52 is normally connected to the gas pipe connection portion 53. The operation of the gas device 100 is permitted. On the other hand, when the contact switch 51b is in a non-conductive state (when in the state shown in FIG. 5A), it is determined that the plug 50 is not attached to the plug attachment portion 51, and the gas pipe connection portion 53 is determined. It is recognized that the gas pipe 52 is not normally connected, and the operation of the gas device 100 is prohibited.
Thereby, the safe driving | operation of the gas equipment 100 is ensured.

[Driving operation acceptance judgment process]
As described above, the gas equipment system 200 of the present invention is characterized in that the control device 4 performs control related to the driving operation acceptance determination.
Below, based on the control flow of FIG. 6, a driving operation acceptance determination process will be described.
When the gas device 100 is shifted from the operation stop state to the operation state, the operation switch 32 of the operation operation receiving unit 9 is pressed (# 101).
When the operation switch 32 is pressed, the control device 4 (an example of the driving operation acceptance determination unit m1) checks that the plug 50 is mounted on the plug mounting portion 51, so that the contact switch 51b of the plug mounting portion 51 is checked. Whether or not is in a conductive state is determined (# 102).
When the control device 4 determines that the contact switch 51 b of the plug mounting portion 51 is in a conductive state and the plug 50 is mounted on the plug mounting portion 51, the gas pipe 52 is properly connected to the gas pipe connecting portion 53. It is recognized that there is no abnormality in the gas pipe connection, and the operation of the gas device 100 is permitted.

When the operation is permitted, the control device 4 lights the operation display lamp 33, opens the first electromagnetic valve 8a and the second electromagnetic valve 8b, sets the proportional valve 10 to a predetermined opening degree, and uses it for convection. The gas apparatus 100 is shifted from the operation stop state to the operation state by operating the fan 3 (# 103, 104).
On the other hand, when the control device 4 determines that the contact switch 51b of the plug mounting portion 51 is in a non-conductive state and the plug 50 is not mounted on the plug mounting portion 51, the control device 4 makes a connection to the gas pipe connecting portion 53 with respect to the gas pipe connecting portion. It is recognized that the gas pipe 52 conforming to 53 is not connected (there is a gas pipe connection abnormality), and the operation of the gas device 100 is prohibited. Further, the control device 4 turns on the gas pipe connection abnormality lamp 36 so as to notify the outside of the abnormality in the connection of the gas pipe 52 to the gas pipe connection portion 53 (# 105).

[Second Embodiment]
In 2nd Embodiment of the gas equipment system 200, the structure of a driving | running permission tool and a driving permission tool connection part differs with respect to 1st Embodiment. In the following, the configuration will be mainly described, and description of the same configuration and control as in the first embodiment may be omitted.

As shown in FIGS. 7 (a) and 7 (b), the operation permitting tool of the second embodiment is configured as a connector 56 having a conductive portion 56a that is electrically conducted therein.
A connector mounting portion 57 (an example of an operation permission device mounting portion) to which the connector 56 can be mounted is provided with a contact terminal 57a that is in a conductive state via the conductive portion 56a of the connector 56 when the connector 56 is mounted. It has been.
As in the present embodiment, the configuration in which the contact terminal 57a is provided in the connector mounting portion 57 is likely to be mechanically operated from the outside as compared with the configuration in which the contact switch 51b shown in the first embodiment is provided. Less, the object of the present invention can be better achieved.

The contact terminal 57a is electrically connected to the control device 4 (an example of the driving operation acceptance determination unit m1).
In the control device 4 (an example of the driving operation acceptance determination unit m1), when the contact terminal 57a is in a conductive state via the conductive portion 56a (as shown in FIG. 7B), that is, the connector 56 is attached to the connector. Only when it is attached to the unit 57, it is recognized that the gas pipe 52 conforming to the gas pipe connection part 53 is connected to the gas pipe connection part 53 (there is no abnormality in the gas pipe connection), and the operation operation reception part The operation of the gas apparatus 100 accompanying the operation to 9 is permitted. On the other hand, when the contact terminal 57a is in a non-conducting state (as shown in FIG. 7A), that is, when the connector 56 is not mounted on the connector mounting portion 57, the “gas pipe connection abnormality” determination is made. The operation of the device 100 is prohibited.

[Third Embodiment: Configuration Related to Flame Detection by Gas Leakage]
In the third embodiment, in addition to the configuration of the second embodiment, the gas equipment system 200 causes the flame to flow when a gas leak occurs from a connection portion between the gas pipe connection portion 53 and the gas pipe 52 and a flame is generated. It is comprised so that the function which detects and stops the driving | operation of the gas equipment 100 may be exhibited.

Specifically, as shown in FIG. 8 (a), a portion (FIG. 8) between the gas pipe connecting portion 53 and the suction port 17 into which the outside air serving as the combustion air A is sucked on the outer surface of the main body 1 of the gas device 100. 8 (a) is provided with a connector mounting portion 57 as a driving permission device mounting portion. Then, as shown in FIG. 8A, the conductive portion 56a of the connector 56 as an operation permission tool is provided with a flame sensing part 56b that is disconnected when the temperature exceeds the flame generation determination threshold temperature. Here, the flame occurrence determination threshold temperature is, for example, a temperature when a flame is generated in the vicinity thereof for a predetermined time or more.
In the state where the connector 56 is attached to the connector attachment portion 57, when a gas leaks from a connection portion between the gas pipe connection portion 53 and the gas pipe 52 and a flame is formed, the flame is an intake port for the combustion air A 17 is formed. In this case, the flame detection portion 56b of the conductive portion 56a of the connector 56 is disconnected due to the radiant heat of the flame, exceeding the flame generation determination threshold temperature. When the flame detection portion 56b of the conductive portion 56a is disconnected, the contact terminal 57a of the connector mounting portion 57 is changed from a conductive state to a non-conductive state.
The control device 4 (an example of the operation stop unit m2) is electrically connected to the contact terminal 57a, and when the gas device 100 is in an operating state, the contact terminal 57a of the connector mounting portion 57 is not in a conductive state. When the conduction state is established, it is determined that the flame detection part 56b is disconnected, it is determined that a flame due to gas leakage has occurred from the connection part between the gas pipe connection part 53 and the gas pipe 52, and the gas device 100 Stop operation.

  Next, the operation stop processing when a flame accompanying gas leakage occurs will be described based on the control flow of FIG. Since the control until the gas device 100 is in the operating state (up to step # 204) is the same as the control up to step # 104 of the first embodiment, only the subsequent control will be described here.

When the gas device 100 is in an operating state and the contact terminal 57a of the connector mounting portion 57 is changed from a conducting state to a non-conducting state, the control device 4 connects the connecting portion between the gas pipe connecting portion 53 and the gas pipe 52. Is determined that a flame has occurred (# 206), the emergency warning lamp 37 is turned on (# 207), and the operation of the gas appliance 100 is stopped (# 208).
On the other hand, when the gas device 100 is in an operating state with the connector 56 mounted on the connector mounting portion 57, the control device 4 maintains the conduction state of the contact terminal 57a of the connector mounting portion 57. Then, it is determined that no flame is generated at the connection portion between the gas pipe connecting portion 53 and the gas pipe 52 (# 206), and the operation of the gas device 100 is continued (# 204).

[Gas equipment]
As described so far, the present application exhibits its functions well by the gas equipment system 200 having the above-described configuration. The gas equipment 100 employed in the gas equipment system 200 has the following configuration.
That is, the gas apparatus 100 includes the burner 2 that combusts the fuel gas G together with the combustion air A, and the driving operation reception unit 9 that receives the driving operation from the outside. Based on the driving operation received by the driving operation reception unit 9 Driving permission tool mounting portions 51 and 57 that are configured to control the combustion of the burner 2 and that can be mounted with driving permission tools 50 and 56 that allow driving based on the driving operation received by the driving operation receiving portion 9 in the mounted state. Provided, when the driving allowance tools 50 and 56 are attached to the driving allowance fitting mounting portions 51 and 57, the operation of the device accompanying the driving operation to the driving operation receiving portion 9 is allowed, and when it is not mounted, A control device 4 (an example of the driving operation acceptance determination unit m1) that prohibits the operation of the device despite the driving operation to the driving operation reception unit 9 is provided and configured.

[Gas pipe]
The gas pipe 52 has the following configuration.
That is, the gas pipe 52 is connected via the pipe joint 54 to the gas pipe connection portion 53 provided in the gas device 100 that controls the combustion of the burner 2 based on the driving operation received by the driving operation receiving portion 9. The operation permission tools 50 and 56 that can be mounted on the operation permission tool mounting portions 51 and 57 provided in the gas device 100 are provided. The operation permission tools 50 and 56 are mounted on the operation permission tool mounting portions 51 and 57, respectively. In this state, the driving operation receiving unit 9 is configured to allow driving based on the driving operation.

[Another embodiment]
(1) In the first embodiment, the contact switch 51b is shown as the changeover switch. However, the changeover switch may be constituted by, for example, an optical contactless switch.

(2) Another configuration of the connector 56 according to the second embodiment (FIG. 7) will be described. As shown in FIG. 10, the connector 56 includes a connecting portion 56d connected to the connector main body 56e and the gas pipe 52, the conductive portion 56a of the connector 56 is provided with both end portions 56b inside the connector main body 56e, and both ends. The intermediate portion 56c between the portions 56b may be configured to be provided from one end to the other end inside the connecting portion 56d.
As a result, the connecting portion 56 d that connects the connector 56 and the gas pipe 52 is cut, and when the connector 56 is detached from the gas pipe 52 and attached to the connector attachment portion 57, the contact of the connector attachment portion 57 Terminal 57a remains non-conductive. As a result, the control device 4 (an example of the driving operation acceptance determination unit m1) does not accept the driving operation. That is, only the connector 56 can be prevented from being used separately from the gas pipe 52.

  The gas equipment system, the gas equipment, and the gas pipe device of the present invention are configured so that an appropriate gas pipe is connected to the gas pipe connection portion while maintaining a simple structure of the gas pipe connection portion, and the gas equipment main body is safe. It can be effectively used as one that can execute the operation.

2: Burner 4: Control device 9: Driving operation receiving unit 50: Plug 50a: Inserting unit 51: Plug mounting unit 51a: Opening 51b: Changeover switch 52: Gas pipe 53: Gas pipe connecting part 54: Pipe fitting 55: Connection Member 56: Connector 56a: Conductive portion 56b: Both end portions 56b: Flame sensing portion 56c: Intermediate portion 56d: Connection portion 56e: Connector main body 57: Connector mounting portion 57a: Contact terminal 100: Gas equipment 200: Gas equipment system A: Combustion Air G: Fuel gas m1: Operation operation acceptance determination means m2: Operation stop means

Claims (8)

A gas pipe with a pipe joint at one end;
A gas pipe connecting part to which the gas pipe is connected via the pipe joint, a combustion part for burning the fuel gas received from the gas pipe connecting part together with combustion air, and a driving operation receiving part for receiving a driving operation from outside Gas equipment having
A gas equipment system that determines whether or not to accept a driving operation to the driving operation receiving unit,
A driving allowance that allows the operation based on the driving operation received by the driving operation accepting unit to be installed in a mounted state is provided separately from the gas device, and the operation allowance that can be attached to the gas device Part
When the driving permission tool is mounted on the driving permission tool mounting portion, the device is allowed to drive with the driving operation to the driving operation receiving portion, and when the driving permission tool is not mounted, to the driving operation receiving portion. A gas equipment system comprising a driving operation acceptance determination means for prohibiting the driving of the equipment despite the driving operation.   The gas appliance according to claim 1, wherein the operation permission tool mounting portion is provided with a changeover switch that switches from a non-conductive state to a conductive state when the driving permission device is mounted on the driving permission device mounting portion. system. The operation permitting tool includes a conductive portion that is electrically conductive therein,
The contact allowance mounting portion includes a contact terminal that switches from a non-conductive state to a conductive state via the conductive portion when the drive permitting device is mounted on the driving allowance mounting portion. The gas equipment system according to 1.   The gas equipment system according to any one of claims 1 to 3, further comprising a connecting member that connects the operation permission tool and the gas pipe. The operation permission tool has a connection section that connects the operation permission tool main body and the gas pipe,
The conductive portion of the driving permission tool has both end portions provided inside the driving permission tool body, and an intermediate portion between the both end portions is provided from one end to the other end inside the connecting portion. The gas equipment system according to claim 3. The operation permission device mounting portion is provided at a portion between the gas pipe connection portion and the combustion air suction port supplied to the combustion portion on the outer surface of the device body,
The conductive part of the operation permission tool is provided with a flame detection part that is disconnected when the flame generation determination threshold temperature is exceeded,
The gas equipment system according to claim 3, further comprising an operation stop unit that stops the operation of the equipment when the conductive portion of the operation permission tool is disconnected. A gas that includes a combustion unit that burns fuel gas together with combustion air, and a driving operation reception unit that receives a driving operation from the outside, and that controls combustion of the combustion unit based on the driving operation received by the driving operation reception unit Equipment,
A driving permission tool mounting portion capable of mounting a driving permission tool that allows driving based on the driving operation received in the driving operation receiving section in a mounted state;
When the driving permission tool is mounted on the driving permission tool mounting portion, the device is allowed to drive with the driving operation to the driving operation receiving portion, and when the driving permission tool is not mounted, to the driving operation receiving portion. A gas appliance provided with a driving operation acceptance determination means for prohibiting the operation of the device despite the driving operation. A gas pipe connected via a pipe joint to a gas pipe connecting part provided in a gas device that controls the combustion of the combustion part based on the driving operation received by the driving operation receiving part;
A driving permission tool that can be mounted on a driving permission tool mounting portion provided in the gas appliance,
The gas pipe configured to allow driving based on a driving operation received by the driving operation receiving unit in a state where the driving permission tool is mounted on the driving permission tool mounting unit.

Images