JP5962338B2 - Stove - Google Patents

Description

  The present invention relates to a stove that can appropriately avoid overheating of a member or the like adjacent to a top plate through which a stove burner is exposed.

  In the system kitchen, there is known a drop-in stove in which a mounting hole is provided in the counter and is assembled by being fitted into the mounting hole from above. In the case of such a drop-in stove, the upper surface portion of the counter is located at the lower side or side adjacent position of the top plate, so that the counter portion is exposed to hot air as the stove burner burns. become. In particular, if the counter is made of a wood-based material, it may be carbonized if it reaches an overheated state. In order to cope with this, in Patent Document 1, temperature detection means for detecting the temperature of the stove body is installed at positions such as the outer surface and the inner surface of the outer peripheral wall of the stove body, and the detected temperature cannot exceed the set temperature. For example, it has been proposed to perform safety control to forcibly stop the combustion operation of the stove burner.

JP-A-10-339443

  However, some stoves have an oven in addition to the stove burner. When the oven is also burned together with the stove burner, the hot air accompanying the burning operation of the oven reaches the temperature detection means. For this reason, it is conceivable that the temperature detected by the temperature detector rapidly increases and exceeds the set temperature at an early stage. If the detected temperature exceeds the set temperature, the combustion of the stove burner is forcibly stopped by automatic control. In this case, although the adjacent part of the top plate such as a counter to be protected is at a low temperature that does not require any protection, the combustion is automatically stopped as a result of the false detection, and for the user, The inconvenience will be that the opportunity for use will be deprived. In recent years, when a plurality of stove burners are installed, there is a tendency to install a high fire type burner in a part thereof, and in such a stove, the opportunity of using the high fire type burner is deprived due to the circumstances described above, This is inconvenient for the user.

  On the other hand, it may be possible to directly detect the temperature of the part closer to the counter to be protected, for example, the upper surface of the top plate. However, recent top plates tend to be made of glass in favor of the design effect, and installing a temperature sensor on the top surface of the top plate impairs design, so it is difficult to adopt It is in.

  The present invention has been made in view of such circumstances, and an object of the present invention is to generate an overheated state even in a stove provided with a combustion heating unit other than a stove burner such as an oven. It is to provide a stove that can effectively use the stove burner while avoiding the above and ensuring safety.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a stove burner disposed so as to pass through the top plate and exposed upward, and the top plate for monitoring the temperature of the adjacent portion of the top plate. And a control means for forcibly stopping combustion or forcibly reducing combustion thermal power when the temperature detected by the temperature monitoring sensor is equal to or higher than a determination temperature. The second specific burner is a combustion heating source other than the stove burner, and the following specific items are provided for a stove in which a second burner disposed at a site different from the stove burner is provided. It was. That is, as the control means, the judgment temperature is switched between different temperature values when only the stove burner is burning and when both the stove burner and the second burner are burning. It was set as the structure (Claim 1).

  In the case of the present invention, for example, the first determination temperature is applied while only the stove burner is in a combustion operation. On the other hand, if the second burner is also in a combustion operation to be in a simultaneous combustion state, the first determination temperature is set to, for example, the second determination temperature. By switching to, safety control such as forcibly stopping combustion or forcibly reducing combustion thermal power is executed. As a result, safety control corresponding to any combustion situation can be executed, and it is possible to reliably avoid the occurrence of a situation in which an adjacent portion of the top plate falls into an overheated state. In other words, compared to when only the stove burner is in operation, the temperature detected by the temperature monitoring sensor is excessively detected due to the influence of the heat from the second burner when the second burner burns together. become. By taking this into account, the above-described operation can be reliably obtained by switching to the second determination temperature in which the first determination temperature is changed and set to a higher temperature side.

  In the first aspect of the present invention, combustion time measuring means for measuring the elapsed time from the start of combustion of the second burner is further provided, and when the second burner is operated for combustion as a control means in addition to the stove burner, the combustion time measurement is performed. According to the elapsed time value measured by the means, the determination temperature applied when only the burner is burning is changed to the determination temperature applied when both the burner and the second burner are burning. It can be set as the structure applied by switching (Claim 2). In this way, even if the simultaneous combustion state occurs, the initial stage is not significantly affected by the heat from the second burner. It can be executed.

  In the second aspect of the invention, the burner is disposed so as to be exposed upward through the top plate, and disposed in a portion other than the top plate in order to monitor the temperature of the adjacent portion of the top plate. A temperature monitoring sensor, and a control means for forcibly stopping combustion of the cono burner or forcibly reducing combustion thermal power when the temperature detected by the temperature monitoring sensor is equal to or higher than a determination temperature, and combustion heating other than the como burner The following specific matters are provided for a stove that is a second burner that is a source and is provided with a second burner that is disposed in a different part from the stove burner. That is, as the control means, when both the stove burner and the second burner are combusting, the detected temperature of the temperature monitoring sensor is corrected, and the detected temperature after the correction process is used for comparison with the determination temperature. (Claim 3).

  In the case of the second invention, the same operation as that of the first invention is obtained. That is, while only the burner is in a combustion operation, safety control such as forcibly stopping combustion or forcibly reducing combustion thermal power is executed based on the comparison between the temperature detected by the temperature monitoring sensor and the determination temperature. On the other hand, if the second burner is also burnt in addition to the stove burner and enters the simultaneous combustion state, a correction process is applied to the detected temperature from the temperature monitoring sensor, and the detected temperature after the correction process is compared with the determination temperature. Based on the above, the safety control is executed. Thus, as in the first aspect of the invention, safety control corresponding to any combustion situation can be executed, and the occurrence of a situation in which the adjacent portion of the top plate falls into an overheated state is reliably avoided. It becomes possible. In other words, compared to when only the stove burner is in operation, the temperature detected by the temperature monitoring sensor is excessively detected due to the influence of the heat from the second burner when the second burner burns together. become. By taking this into account, the detected temperature of the temperature monitoring sensor is corrected to a lower temperature side, so that the above action can be obtained with certainty.

    According to a second aspect of the present invention, a combustion time measuring means for measuring an elapsed time from the start of combustion of the second burner is further provided, and as the control means, the combustion time is measured when the second burner is operated for combustion in addition to the stove burner. According to the elapsed time value measured by the means, it is possible to perform a correction process of the detected temperature of the temperature monitoring sensor and a comparison with the determination temperature using the detected temperature after the correction process (claim). Item 4). In this way, even if a simultaneous combustion state occurs, the initial stage is not significantly affected by the heat from the second burner. Will be able to perform.

  In the first or second invention described above, the control means is communicatively connected to the second control means for controlling the operation of the second burner, and information relating to the combustion operation of the second burner is transmitted by communication from the second control means. It can be set as the structure to acquire (Claim 5). By doing in this way, the information on the start and stop of the combustion operation of the second burner can be accurately recognized on the side of the control means for executing the operation control of the stove burner, and the first or second invention. The action can be realized concretely and reliably.

  As described above, according to the stove of the first invention, for example, the first determination temperature is applied while only the stove burner is in the combustion operation, while the second burner is also in the combustion operation so that the simultaneous combustion state is achieved. If this is the case, safety control such as forcibly stopping combustion or forcibly reducing combustion thermal power can be performed by switching the first determination temperature to the second determination temperature, for example. As a result, in any combustion situation, safety control corresponding to the combustion condition can be executed, and the occurrence of a situation in which an adjacent portion of the top plate falls into an overheated state can be reliably avoided. In other words, compared to when only the stove burner is in operation, the temperature detected by the temperature monitoring sensor is excessively detected due to the influence of the heat from the second burner when the second burner burns together. Therefore, by taking this into account, the operation and effect of the present invention can be reliably obtained by switching to the second determination temperature in which the first determination temperature is changed and set to a higher temperature side.

  According to the stove of claim 2, when the second burner is combusted in addition to the stove burner, it is applied when only the stove burner is combusted according to the elapsed time value measured by the combustion time measuring means. By switching the applied determination temperature to the determination temperature applied when both the stove burner and the second burner are burning, even if a simultaneous combustion state occurs, the initial stage is changed from the second burner. Therefore, it becomes possible to perform finer safety control by eliminating the need to switch the judgment temperature.

  According to the stove of the second invention, the same operational effects as the first invention can be obtained. That is, while only the burner is in operation, safety control such as forcibly stopping combustion or forcibly reducing combustion thermal power is executed based on the comparison between the detected temperature from the temperature monitoring sensor and the judgment temperature. In addition, if the second burner is also combusted and enters the simultaneous combustion state, a correction process is performed on the temperature detected from the temperature monitoring sensor, and safety control is executed based on the comparison between the detected temperature after the correction process and the determination temperature. be able to. As a result, in any combustion situation, safety control corresponding to the combustion condition can be executed, and the occurrence of a situation in which an adjacent portion of the top plate falls into an overheated state can be reliably avoided. In other words, compared to when only the stove burner is in operation, the temperature detected by the temperature monitoring sensor is excessively detected due to the influence of the heat from the second burner when the second burner burns together. Therefore, the effect of the present invention can be reliably obtained by correcting the detected temperature of the temperature monitoring sensor to a lower temperature side in consideration of this.

    According to the stove of claim 4, when the second burner is operated in addition to the stove burner, the temperature monitoring sensor detects the temperature according to the elapsed time value measured by the combustion time measuring means, and By performing a comparison with the determination temperature using the detected temperature after the correction process, even if the simultaneous combustion state occurs, the initial stage is not significantly affected by the heat from the second burner. By making the correction process unnecessary, finer safety control can be executed.

  According to the stove of claim 5, the control means is connected to the second control means for controlling the operation of the second burner, and information relating to the combustion operation of the second burner is acquired by communication from the second control means. By doing so, information on the start and stop of the combustion operation of the second burner can be accurately recognized on the side of the control means for executing the operation control of the stove burner, and the first or second invention The effects of the above can be realized concretely and reliably.

It is a partial cross section explanatory view of the stove concerning the 1st or 2nd embodiment of the present invention. It is a control block diagram of a stove according to the first embodiment. It is a time chart shown about ON / OFF of the combustion operation of a stove burner, ON / OFF of the combustion operation of an oven burner, and the switching setting of the applied judgment temperature. It is a relationship figure which shows the result of a test example about the relationship between the temperature detected by a temperature monitoring sensor, and the temperature of a counter in the case of operating only the stove burner. It is a relationship figure which shows the result of a test example about the relationship between the temperature rise of the detected temperature by a temperature monitoring sensor, and the temperature rise of a counter in the case where a stove burner and an oven burner are operated simultaneously. It is a control block diagram of a stove according to a second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is an explanatory view showing the stove 2 according to the first embodiment of the present invention in a partially sectional state. The stove 2 is a so-called drop-in stove type gas stove, and is assembled by being fitted into the mounting hole 31 formed in advance in the counter 3 from above. An oven 4 including a combustion heating source other than the stove 2 is assembled and installed below the stove 2.

  The stove 2 includes a stove body 22 having a plurality of gas burners (combustor) 21 and 21, a top plate 23 mounted on the stove body 22, and a counter 3 near the mounting hole 31. The temperature monitoring sensor 24 for detecting and monitoring the temperature of the heater and the stove controller 25 as control means for controlling the operation of the stove 2 are provided. Each stove burner 21 is arranged in a state of penetrating the top plate 3 from below to above and exposed upward on the upper surface of the stove 2. The stove body 22 includes a casing made up of a bottom plate and a side wall 221 (not shown), and a flange portion 222 projects from the upper end position of the side wall 221 to the outer peripheral side. When the stove 2 is fitted into the mounting hole 31 of the counter 3, the stove 2 is held by the flange portion 222 coming into contact with the hole edge of the mounting hole 31.

  The top plate 23 is made of, for example, a glass plate, and the temperature monitoring sensor 24 is not installed directly on the top plate 23 for the following reason, but is installed on the peripheral wall 221 of the stove body 22 as described above. ing. That is, if the temperature monitoring sensor 24 is installed on the outer surface of the top plate 23, the sensor appears on the exterior, and it is considered that the aesthetic appearance of the design is impaired. The temperature monitoring sensor 24 is installed. For this reason, it is desirable to install the temperature monitoring sensor 24 at a position associated with the counter portion adjacent to the stove burner 21 as much as possible. In the present embodiment, the temperature monitoring sensor 24 is disposed at an upper position as possible on the side wall 221 of the stove main body 22.

  The oven 4 is a gas oven incorporating a gas burner (oven burner) 41 (see FIG. 2) as a combustion heating source. The oven 4 includes an oven controller 42 as control means for performing operation control of the oven burner 41 and the like. The oven burner 41 constitutes a second burner.

  As shown in FIG. 2, the stove controller 25 controls the operation of the stove burners 21 and 21 (hereinafter collectively referred to as “the stove burner 21” even when one or both are indicated). And a communication processing unit 252 for communicating with the oven controller 42. On the other hand, the oven controller 42 includes an oven control unit 421 for controlling the operation of the oven burner 41 and a communication processing unit 422 for communicating with the communication processing unit 252 of the stove controller 25. Communication between the stove controller 25 and the oven controller 42 is information indicating that combustion has started when the combustion operation of the oven burner 41 is started, and that combustion has been stopped when the combustion operation is stopped. Information is output from the oven controller 42 to the stove controller 25.

  The stove control unit 251 performs safety control to forcibly stop the combustion operation of the stove burner 21 in the combustion state when the detected temperature detected by the temperature monitoring sensor 24 exceeds a preset determination temperature. It has become. At this time, the first and second types of determination temperatures are set in the stove control unit 251, and when only the stove burner 21 is in combustion operation, the first determination temperature is applied, while the stove burner 21 In addition, the first determination temperature and the second determination temperature are changed and set in accordance with the combustion state grasped based on the communication so that the second determination temperature is applied when both of the oven burners 41 are in a combustion operation. It is supposed to be. That is, as shown in FIG. 3, the first determination temperature is applied while only the burner 21 is in the combustion operation (ON), while the oven burner 41 is also in the combustion operation (ON) and becomes the simultaneous combustion state. The safety control is executed by switching the 1 determination temperature to the second determination temperature. As a result, safety control corresponding to any combustion situation can be executed, and the occurrence of a situation where the counter 3 falls into an overheated state can be reliably avoided.

  Here, it is possible to monitor the temperature of the corresponding part of the counter 3 (adjacent to the burner 21) based on the temperature detected by the temperature monitoring sensor 24, and the overheated state of the corresponding part of the counter 3 depending on the two types of determination temperatures. The reasoning that can avoid the situation of falling into the process will be described with reference to FIGS. 4 and 5. FIG. That is, the detected temperature D (see FIG. 4) detected by the temperature monitoring sensor 24 is a detected value of the ambient temperature in the vicinity of the installation position of the temperature monitoring sensor 24, and the actual temperature of the counter 3 that receives the radiant heat from the flame of the burner 21. The temperature is lower than the temperature C. Therefore, the detected temperature of the temperature monitoring sensor 24 when the stove burner 21 is burned using the actual stove 2 and the actual temperature of the corresponding part of the counter 3 are obtained by a test, and the relationship is grasped in advance. deep. In the test example of FIG. 4, it can be seen that in order to start the safety control when the actual temperature of the counter 3 reaches Tc, the safety control may be started when the detected temperature reaches Td. That is, it is only necessary to set Td as the determination temperature and start the safety control when the detected temperature becomes equal to or higher than the determination temperature.

  On the other hand, FIG. 5 shows the rise state of the detected temperature Du of the monitoring temperature sensor 24 when the oven burner 41 is burned together with the burner 21 and the rise state of the actual temperature Cu of the counter 3. The example acquired by the test about is shown. As can be seen, when the stove burner 21 and the oven burner 41 are simultaneously burned, the detected temperature Du that is affected by the heat caused by the combustion operation of the oven burner 41 is less affected by the actual heat of the counter 3. The temperature rises more rapidly than the temperature Cu. That is, the detected temperature Du at the time of simultaneous combustion is excessively detected as compared with the case where only the burner 21 is in a combustion operation. By adding this difference in temperature rise to Tc and Td in FIG. 4, the second determination temperature to be applied when the burner 21 and the oven burner 41 are simultaneously burned is determined. That is, the second determination temperature is calculated as a temperature value higher than the first determination temperature.

  In the first embodiment described above, when the combustion operation of the oven burner 41 is started in addition to the stove burner 21, the determination temperature setting processing unit 253 switches the determination temperature from the first determination temperature to the second determination temperature. However, the present invention is not limited to this, and the setting is changed from the first determination temperature to the second determination temperature after waiting for a predetermined set delay time td from the start of the combustion operation of the oven burner 41. You may make it do. That is, the stove control unit 251 is provided with a timer 254 as a combustion time measuring means for measuring the combustion time of the oven burner 41 when time measurement is started by the start of the combustion operation of the oven burner 41. Therefore, when the set delay time td has elapsed, the first determination temperature may be changed to the second determination temperature. In this case, since the temperature rise change between the detected temperature Du (see FIG. 5) and the counter temperature Cu is relatively small at the initial stage when the combustion operation of the oven burner 41 is started, the period during which the temperature rise change is small. Indicates that the determination temperature is not changed.

Second Embodiment
FIG. 6 shows the stove controller 25a and the oven controller 42 of the stove 2 according to the second embodiment of the present invention. In the stove according to the second embodiment, the stove controller 251a of the stove controller 25a includes a detected temperature correction processor 255 instead of the determination temperature setting processor 253 (see FIG. 2) in the first embodiment. It is different from the first embodiment in that only one kind of the first determination temperature in the first embodiment is applied as the determination temperature, and other configurations are the same as in the first embodiment. Yes.

  In the detected temperature correction processing unit 255, when the combustion operation of the oven burner 41 is started in addition to the stove burner 21, the temperature detected by the temperature monitoring sensor 24 is reduced and corrected by a predetermined reduction rate. That is, in consideration of the difference in temperature rise between the detected temperature Du (see FIG. 5) and the counter temperature Cu in the simultaneous combustion state of the stove burner 21 and the oven burner 41, and the difference in temperature rise rate between the two, The detection temperature of the temperature monitoring sensor 24 that tends to be excessive is multiplied by a predetermined reduction rate, and correction processing is performed to a lower temperature side. Instead of multiplying by the reduction rate, a table related to temperature correction to the low temperature side is stored in the detected temperature correction processing unit 255 in advance, and the corrected detected temperature is calculated based on the actual detected temperature. Good.

  In the stove control unit 251a, when only the stove burner 21 is in a combustion operation, if the detected temperature detected by the temperature monitoring sensor 24 exceeds the first determination temperature, the combustion operation of the burner 21 in the combustion state is performed. While safety control is performed to forcibly stop, if the oven burner 41 in addition to the burner 21 is combusted, the detected temperature detected by the temperature monitoring sensor 24 is corrected by the detected temperature correction processing unit 255. When the detected temperature after the correction exceeds the first determination temperature, safety control is performed such that the combustion operation of the burner 21 in the combustion state is forcibly stopped. That is, in any case, only one type of first determination temperature that is applied when only the burner 21 is in a combustion operation is used as the determination temperature.

  Even in the case of the second embodiment as described above, the same effects as those of the first embodiment can be obtained.

<Other embodiments>
The present invention is not limited to the first and second embodiments described above, but includes other various embodiments. In other words, the stove 2 may be configured with a built-in grill 5 (see FIG. 1). In this case, the grill controller for controlling the operation of the gas burner of the grill 5 in the stove controllers 25 and 25a. From 256 (see FIGS. 2 and 6), information on the start and stop of the combustion operation of the gas burner of the grill 5 may be communicatively connected so as to be output to the stove control units 251 and 251a. As in the case of the oven 4, when the grill 5 is operated, the influence of the hot air reaches the temperature monitoring sensor 24, so that the temperature rise of the detected temperature resulting from the combustion operation of the grill 5 is taken into consideration. The determination temperature may be changed to the high temperature side, or the detected temperature may be corrected to the low temperature side.

  Method according to the first embodiment in which the setting time is changed from the first determination temperature to the second determination temperature after the combustion time from the start of combustion of the oven burner 41 by the timer 254 (see FIG. 2) has elapsed for the set delay time td. May be applied to the second embodiment (see FIG. 6). That is, after the combustion time from the start of combustion of the oven burner 41 has elapsed for the set delay time td, the detection temperature correction processing unit 255 starts correction processing of the detected temperature to the low temperature side.

  In the above embodiment, when the detected temperature exceeds the determination temperature, safety control is performed such that the combustion operation is forcibly stopped. However, instead of the forced stop, the heating power is forcibly reduced by a predetermined amount. Safety control may be performed.

2 Stove 3 Counter 4 Oven 21 Stove burner 23 Top plate 24 Temperature monitoring sensor 25, 25a Stove controller (control means)
41 Oven burner (second burner)
42 Oven controller (second control means)
221 Side wall (parts other than the top plate)
252 and 422 Communication processing unit 253 Determination temperature setting processing unit 254 Timer (combustion time measuring means)
255 Detection temperature correction processing unit

Claims (5)

A stove burner disposed so as to be exposed upward through the top plate, a temperature monitoring sensor disposed in a portion other than the top plate in order to monitor the temperature of the adjacent portion of the top plate, and And a control means for forcibly stopping combustion or forcibly reducing combustion thermal power when the temperature detected by the temperature monitoring sensor is equal to or higher than a determination temperature, and a second burner that is a combustion heating source other than the stove burner. And a stove provided with a second burner disposed in a different part from the stove burner,
The control means is adapted to switch between different temperature values as the judgment temperature when only the burner is burning and when both the burner and the second burner are burning. A stove characterized by being configured. The stove according to claim 1, wherein
A combustion time measuring means for measuring an elapsed time from the start of combustion of the second burner;
The control means is applied when only the burner is burning according to the elapsed time value measured by the burning time measuring means when the second burner is operated in addition to the burner. A stove configured to switch the applied determination temperature to a determination temperature applied when both the stove burner and the second burner are burning. A stove burner disposed so as to be exposed upward through the top plate, a temperature monitoring sensor disposed in a portion other than the top plate in order to monitor the temperature of the adjacent portion of the top plate, and And a control means for forcibly stopping combustion or forcibly reducing combustion thermal power when the temperature detected by the temperature monitoring sensor is equal to or higher than a determination temperature, and a second burner that is a combustion heating source other than the stove burner. And a stove provided with a second burner disposed in a different part from the stove burner,
The control means corrects the detected temperature of the temperature monitoring sensor when the burner and the second burner are both combusting, and performs comparison with the determination temperature using the detected temperature after the correction process. A stove characterized by being configured to. The stove according to claim 3, wherein
A combustion time measuring means for measuring an elapsed time from the start of combustion of the second burner;
The control means corrects the detected temperature of the temperature monitoring sensor according to the elapsed time value measured by the combustion time measuring means when the second burner is operated in addition to the stove burner, and A stove configured to perform a comparison with the determination temperature using the detected temperature after the correction process. The stove according to any one of claims 1 to 4,
The control means is communicably connected to second control means for controlling the operation of the second burner, and is configured to acquire information related to the combustion operation of the second burner by communication from the second control means. , Stove.

Images