Range hood

Abstract

To provide a range hood disposed in a room having a kitchen space and a living space continuing to the kitchen space, which can suppress malfunctions due to non-reception of operation signals from each space and erroneous operations.SOLUTION: A range hood has a first operating mode aimed at discharging air from a kitchen space 110 to the outside of a room, and a second operating mode aimed at discharging air from a living space 120 to the outside of the room. Even when a second operating signal is received by a second receiving unit 14 while the first operating mode is in operation, the first operating mode is continued and the second operating mode is not operated, thereby suppressing malfunctions due to non-reception of operation signals and erroneous operations.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a range hood in which the operating mode can be set by a remote control such as infrared communication, and which can be effectively used as an indoor ventilation device not only for kitchen spaces but also for living spaces. [Background technology]

[0002] Cooking indoors produces odors and combustion exhaust gases. Range hoods with ventilation air volume control functions are widely used to ventilate the room with an appropriate air volume according to changes in the air quality. For example, the ventilation air volume of a range hood can be set in multiple stages, and if the air quality in the room suddenly deteriorates while cooking, the user can set the air volume to maximum mode to ventilate the room quickly.

[0003] In order to increase convenience, the mainstream range hoods are ones in which the operation mode is controlled by a remote control or the like, and there is no need to operate a switch on the housing. For example, Patent Document 1 discloses a range hood that does not require switch operation on the housing, and that is equipped with a control mechanism that automatically controls the ventilation air volume according to the state of the stove, and also has a function that allows the range hood to be operated remotely from the living room. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6666734 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, in floor plans where the kitchen and living spaces are connected without being separated by a wall, range hoods are effectively used not only for ventilation of the kitchen space but also as indoor ventilation equipment for the living space. There is a growing need for range hoods that can be operated remotely from both the kitchen and living space.

[0006] However, in the existing model, the infrared receiver was only located in one place on the range hood housing, so the accuracy of reception was insufficient depending on the position from which the remote control was operated. In particular, when the remote control was operated from the living room, which was far away from the range hood, there was a problem that it was difficult to receive the operation signal.

[0007] In addition, when the remote control is operated from both the kitchen and living spaces, there is a problem that the range hood may malfunction due to an unexpected operation signal being sent. For example, due to a child's mischief or mistaken operation of the remote control from the living space, the range hood may suddenly stop operating while ventilating at maximum air volume during cooking, or the setting may be changed to an unexpected air volume.

[0008] The present invention has been made in consideration of the above-mentioned conventional problems, and aims to solve the malfunctions and incorrect operation that occur when the range hood's airflow adjustment is mainly controlled by remote control, due to failure to receive the operating signal or erroneous operation. [Means for solving the problem]

[0009] The range hood of the present invention is disposed in a room having a kitchen space in which a stove is disposed and a living space continuous with the kitchen space, and is equipped with a first operating mode intended to exhaust air from the kitchen space to the outside of the room, and a second operating mode intended to exhaust air from the living space to the outside of the room, and is characterized in that it comprises a first receiving unit that receives a first operation signal that activates the first operating mode, and a second receiving unit that receives a second operation signal that activates the second operating mode, and even if the second receiving unit receives the second operation signal while the first operating mode is operating, it continues the first operating mode and does not activate the second operating mode.

[0010] In addition, in the range hood of the present invention, when the first operation signal is received by the first receiving unit while the second operation mode is in operation, the second operation mode is stopped and the first operation mode is activated.

[0011] In addition, the range hood of the present invention includes a housing unit that supports a blower therein and is fixed to a wall or ceiling of the room, and the first receiving unit is arranged on the design surface of the housing unit above the stove and receives the first operation signal operated from the kitchen space, and the second receiving unit is arranged on the design surface of the housing unit facing the living space and receives the second operation signal operated from the living space.

[0012] In addition, the range hood of the present invention is characterized in that when the first operating signal is received at the first receiving unit and the second operating signal is simultaneously received at the second receiving unit, the first operating mode is activated. Effect of the Invention

[0013] According to the range hood of the present invention, by providing two receiving sections, a first receiving section for receiving an operation signal from the kitchen space and a second receiving section for receiving an operation signal from the living space, it becomes possible to receive operation signals from both the kitchen space side and the living space side with high accuracy. Conventional range hoods have only one receiving section, but according to the present invention, by providing receiving sections in two places, on the kitchen space side and the living space side of the range hood, it is possible to improve the accuracy of receiving light and prevent failure to receive signals.

[0014] Furthermore, according to the range hood of the present invention, even if the second receiver receives the second operation signal while the first operation mode is in operation, the first operation mode is continued and the second operation mode is not started. This control method makes it possible to prevent the operation mode setting from being changed from the living space side when forced ventilation is required in the kitchen space side.

[0015] Furthermore, according to the range hood of the present invention, when the first operating signal is received by the first receiving unit, the second operating mode is stopped and the first operating mode is activated, so that even if the range hood is operating in the operating mode set from the living space side, if a situation arises in which forced ventilation is required in the kitchen space side, the operating mode can be changed from the kitchen space side.

[0016] According to the range hood of the present invention, the first receiving unit is disposed on the design surface of the housing part above the stove in the kitchen space, and the second receiving unit is disposed on the design surface of the housing part facing the living space. With this configuration, the receiving areas of the first receiving unit and the second receiving unit are limited, and the receiving areas of the first receiving unit and the second receiving unit do not overlap with each other, thereby further improving the light receiving accuracy.

[0017] Furthermore, according to the range hood of the present invention, the second receiving unit is disposed on the design surface of the housing unit facing the living space, so that the second receiving unit can easily receive the second operation signal operated from the living space, preventing malfunction due to failure to receive the signal. Also, the first receiving unit has difficulty receiving the second operation signal operated from the living space, preventing malfunction of the operation mode.

[0018] Furthermore, according to the range hood of the present invention, when the first receiving unit receives the first operation signal and the second receiving unit receives the second operation signal at the same time, the first operation mode is activated. With this configuration, when remote control operations are performed simultaneously from the kitchen space side and the living space side, ventilation can be performed in the operation mode set in the kitchen space side. [Brief description of the drawings]

[0019] [Figure 1] 1 is an elevational view of a room in which a range hood according to one embodiment of the present invention is installed. [Diagram 2] 1 is a perspective view showing a range hood according to an embodiment of the present invention; [Diagram 3] 4 is a table for explaining operation modes of the range hood according to one embodiment of the present invention. [Figure 4] 1 is a plan view of a room in which a range hood according to one embodiment of the present invention is installed. [Diagram 5] 1 is a block diagram of a range hood according to one embodiment of the present invention. [Figure 6] 4 is a flowchart for explaining the operation of the range hood according to one embodiment of the present invention. [Figure 7] 4 is a flowchart for explaining the operation of the range hood according to one embodiment of the present invention. [Figure 8] 4 is a flowchart for explaining the operation of the range hood according to one embodiment of the present invention. [Figure 9] 4 is a transition table for explaining the operation of the range hood according to one embodiment of the present invention. [Figure 10] 6 is a table for explaining operation modes of a range hood according to another embodiment of the present invention. [Figure 11] 5 is a flowchart for explaining the operation of a range hood according to another embodiment of the present invention. [Figure 12] 5 is a flowchart for explaining the operation of a range hood according to another embodiment of the present invention. [Figure 13] 5 is a flowchart for explaining the operation of a range hood according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] A range hood 10 according to one embodiment of the present invention will be described in detail below with reference to the drawings. In the following description of this embodiment, the same components will be designated by the same reference numerals in principle, and repeated description will be omitted.

[0021] Fig. 1 is an elevation view of a room 100 in which a range hood 10 according to the present embodiment is installed, and Fig. 2 is an overall perspective view of the range hood 10 according to the present embodiment. In the range hood 10 according to the present embodiment, for example, the ventilation air volume can be adjusted in four operation modes, namely, "stop", "low", "medium", and "high". The air volume setting of the range hood 10 can be arbitrarily changed in design depending on the model.

[0022] As shown in Fig. 1, the range hood 10 is installed in a room 100 in, for example, an apartment or a house. The interior area of ​​the room 100 is divided into a kitchen space 110 and a living space 120 located outside the kitchen space 110. The kitchen space 110 is a space where a user can cook. The living space 120 is a space where a user can eat meals and relax.

[0023] In the kitchen space 110, there are arranged a kitchen counter 111, a stove 112, a range hood 10 as a ventilation means, and a kitchen-side remote control 110A for the user cooking to set the air volume of the range hood 10. In the living space 120, there is arranged a living-side remote control 120A for setting the air volume of the range hood 10 from the living-space 120 side. In this embodiment, the kitchen-side remote control 110A is built into the stove and automatically transmits a signal according to the operating status of the stove. However, the kitchen-side remote control 110A may be a remote control that the user picks up and operates by themselves.

[0024] 1, the kitchen counter 111 is disposed so that the user who will be cooking faces the living space 120. The stove 112 is disposed on the kitchen counter 111. The range hood 10, which is a ventilation means, is disposed above the stove 112 and faces the stove 112.

[0025] The kitchen side remote control 110A and the living room side remote control 120A are configured to be capable of wireless communication with the range hood 10. For example, infrared communication can be used as the wireless communication. In this embodiment, the kitchen side remote control 110A and the living room side remote control 120A are the same remote control and are interchangeable.

[0026] In this embodiment, one kitchen side remote control 110A is placed in the kitchen space 110, and one living room side remote control 120A is placed in the living room space 120, allowing remote control operation from both the kitchen space 110 side and the living room space 120 side. Note that the placement of the remote controls is not limited to this, and for example, if the living room space 120 is large, two or more living room side remote controls 120A may be placed.

[0027] The range hood 10 can be operated by an operation signal received from the kitchen side remote control 110A or an operation signal received from the living room side remote control 120A.

[0028] 2, the range hood 10 includes a housing 12 fixed to a wall or ceiling of the kitchen space 110, a first receiving unit 13 that receives an operation signal transmitted from the kitchen side remote control 110A, and a second receiving unit 14 that receives an operation signal transmitted from the living room side remote control 120A. The first receiving unit 13 and the second receiving unit 14 can receive operation signals from both the kitchen side remote control 110A and the living room side remote control 120A.

[0029] FIG. 3 shows a table for explaining the operation modes of the range hood 10 according to the present embodiment. In this embodiment, the operation signal received by the first receiving unit 13 is defined as a first operation signal for operating the first operation mode. Also, the operation signal received by the second receiving unit 14 is defined as a second operation signal for operating the second operation mode. The air volumes "weak", "medium", and "strong" are "forced ventilation modes" for intensively ventilating the air in the first and second operation modes, for example, when the air quality in the room 100 deteriorates or when the air in the room 100 is replaced for a change of mood. When the air volume is "stopped", the first and second operation modes are in a "stopped mode", and the range hood 10 does not operate.

[0030] The first operation mode is a mode in which the range hood 10 operates based on a first operation signal received by the first receiving unit 13. This mode is mainly automatically transmitted according to the operating status of the stove 112, or is operated by a user in the kitchen space 110 using the kitchen remote control 110A and operates at a set air volume. When a user cooks, heat, moisture, oil, etc. are generated around the stove 112, deteriorating the air quality inside the room 100. By performing forced ventilation with an appropriate air volume, the range hood 10 can quickly respond to any sudden changes in the indoor air quality that may worsen depending on the cooking status.

[0031] The second operation mode is a mode in which the range hood 10 operates based on the second operation signal received by the second receiving unit 14. This mode is mainly operated by a user in the living space 120 using the living-side remote control 120A and operates at a set air volume. The user can select the air volume and execute remote control operation using the living-side remote control 120A installed in the living space 120. Since the user can ventilate at a desired air volume even from outside the kitchen space 110, the range hood 10 can be effectively used as an indoor ventilation device that also includes the living space 120.

[0032] As described above, since the kitchen side remote control 110A and the living room side remote control 120A are the same remote control, the first operation mode also operates when a user in the kitchen space 110 operates the living room side remote control 120A and the signal is received by the first receiving unit 13. Also, the second operation mode also operates when a user in the living room space 120 operates the kitchen side remote control 110A and the signal is received by the second receiving unit 14.

[0033] 2, the housing 12 of the range hood 10 is composed of a main body 15 and a hood 16. A blower having a sirocco fan is fixed inside the main body 15 of the range hood 10. The range hood 10 exhausts air inside the room 100 to the outside by operating the blower.

[0034] Hood 16 is fixed to main body 15 and consists of a front side panel 18, a rear side panel 19, a left side panel 20, and a right side panel 21. The front side is the side that faces a person cooking when range hood 10 is installed, and is the side facing kitchen space 110. The rear side is the side that faces the front side, and is the side facing living space 120. The left side is the side to the left of a person cooking when range hood 10 is installed, and the right side is the side to the right of a person cooking when range hood 10 is installed.

[0035] The lower ends of the front side plate 18, the rear side plate 19, the left side plate 20 and the right side plate 21 are bent toward the inside of the hood 16 to form base portions 18A, 19A, 20A and 21A.

[0036] The first receiving unit 13 is disposed on the design surface of the housing 12 above the stove 112, and mainly receives operation signals transmitted from the kitchen-side remote control 110A. As shown in Fig. 2, the first receiving unit 13 is disposed on the underside of the base 18A on the front side panel 18 side, and is capable of receiving operation signals transmitted from the receiving area 13A shown by sand-like hatching in Fig. 1. In Fig. 2, three first receiving units 13 are disposed in parallel on the underside of the base 18A on the front side panel 18 side, but the number and locations of the first receiving units 13 are not limited to this, and may be disposed in any manner that allows the operation signals transmitted from the kitchen-side remote control 110A to be received without omission.

[0037] The second receiving unit 14 is disposed on the design surface of the housing unit 12 facing the living space 120, and mainly receives operation signals transmitted from the living-side remote control 120A. In the example of FIG. 2, the second receiving unit 14 is disposed on the design surface of the rear side panel 19. With such an arrangement, the second receiving unit 14 can receive operation signals transmitted from a wide range of receiving areas 14A indicated by diagonal lines in FIG. 1, and can receive with high accuracy even signals from positions far from the stove 112. In FIG. 2, three second receiving units 14 are disposed in parallel on the design surface on the rear side panel 19 side, but the number and locations of the second receiving units 14 are not limited to this, and any arrangement can be used as long as the operation signals transmitted from the living-side remote control 110A can be received without omission.

[0038] If an operation signal transmitted from the living-side remote control 120A by a user in the living space 120 is mistakenly received by the first receiving unit 13, an unintended malfunction may occur for the user in the kitchen space 110. In this embodiment, by configuring the receiving area 13A of the first receiving unit 13 and the receiving area 14A of the second receiving unit 14 so as not to overlap, it is possible to prevent the first receiving unit 13 from mistakenly receiving the operation signal transmitted from the living-side remote control 120A.

[0039] 2, the second receiving unit 14 is disposed on the rear side panel 19 because the living space 120 is disposed on the rear side, but this is not limited to this case. For example, in a floor plan where the living space 120 is disposed on the left side, the second receiving unit 14 may be disposed on the left side panel 20, and in a floor plan where the living space 120 is disposed on the right side, the second receiving unit 14 may be disposed on the right side panel 21.

[0040] In addition, the second receiving unit 14 may be disposed on any design surface of the housing unit 12 facing the living space 120 as long as the second receiving unit 14 can efficiently cover signals from the living space 120. For example, the second receiving unit 14 may be provided on the design surface of the main body unit 15.

[0041] In addition, in a floor plan in which the living space 120 extends in multiple directions relative to the range hood 10, the second receiving unit 14 can be provided in two or more locations. For example, as shown in FIG. 4, in a floor plan in which the living space 120 extends not only to the rear side of the kitchen space 110 but also to the right side, the second receiving unit 14 can be provided on two surfaces, the rear side panel 19 and the right side panel 21. If the second receiving unit 14 is only provided in one location, there are cases in which the second receiving unit 14 is unable to receive the operation signal depending on the transmission angle of the operation signal. However, by providing the second receiving unit 14 in two or more locations, it becomes possible to comprehensively cover signals from the living space 120.

[0042] 5 shows a block diagram of a ventilation system for a range hood 10 according to one embodiment of the present invention. The range hood 10 includes an operation switch 22 that determines an operation mode of the range hood 10 based on operation signals received from the first receiving unit 13 and the second receiving unit 14 and stores the operation mode, and a motor control unit 23 that controls the operation of a sirocco fan motor 24 of a blower based on the operation mode of the range hood 10 stored by the operation switch 22.

[0043] As described above, the kitchen-side remote control 110A and the living-side remote control 120A are configured to be capable of wireless communication with the first receiving unit 13 and the second receiving unit 14 of the range hood 10. The operation signal received by the first receiving unit 13 is determined as a first operation signal for operating the first operation mode. The operation signal received by the second receiving unit 14 is determined as a second operation signal for operating the second operation mode.

[0044] When the air quality in kitchen space 110 deteriorates due to cooking or the like, a user in kitchen space 110 operates kitchen space 110 to transmit an operation signal to first receiving unit 13 via kitchen-side remote control 110A. When first receiving unit 13 receives an operation signal from kitchen-side remote control 110A, first receiving unit 13 transmits a message to the operation switch 22 indicating that the first operation signal has been received.

[0045] Furthermore, when a user in living space 120 wishes to switch the operation mode of range hood 10, the user in the living room sets the air volume with living-side remote control 120A and transmits an operation signal to second receiving unit 14. When second receiving unit 14 receives the operation signal from living-side remote control 120A, second receiving unit 14 transmits to operation switch 22 a message indicating that the second operation signal has been received.

[0046] The operation switch 22 has a function as a CPU (CENTRAL PROCESSING UNIT) and judges whether the operation signal is the first operation signal or the second operation signal. Then, it judges the type of operation mode of the received operation signal ("Stop", "Low", "Medium", "High"), determines the operation mode of the range hood 10, and stores the determined operation mode of the range hood 10.

[0047] The motor control unit 23 has a function as a CPU, and controls the operation of the sirocco fan motor 24 of the blower based on the operation mode of the range hood 10 determined by the operation switch 22 ("stop", "low", "medium", "high").

[0048] Next, a description will be given of the operation of the range hood 10 according to this embodiment. Figures 6 to 8 are flowcharts for explaining the operation of the range hood 10 according to this embodiment, and Figure 9 is a transition table for explaining the operation of the range hood 10 according to this embodiment.

[0049] 6, in the initial state, the airflow of the range hood 10 is set to "stop." In the initial state, the operation switch 22 stores the airflow setting of "stop," and the sirocco fan motor 24 of the blower is stopped.

[0050] When the operation switch 22 receives a signal from the first receiving unit 13 or the second receiving unit 14, it determines whether the signal has been received by the first receiving unit 13 or the second receiving unit 14 (step S10).

[0051] When an operation signal is received from the first receiving unit 13, the operation switch 22 determines that the received signal is a first operation signal for operating the first operation mode (YES in step S10). Then, the operation switch 22 determines the type of the first operation mode ("stop", "low", "medium", "high"), and when it determines that the first operation mode is "stop" (YES in step S11), it continues the operation stop state (step S12), and the control flow of the range hood 10 thereafter returns to [1] START shown in FIG.

[0052] If the operation switch 22 determines that the first operation mode is other than "stop" (NO in step S11), it determines that the first operation mode is the forced ventilation mode, and the operation switch 22 stores the air volume of the first operation mode ("weak", "medium", "strong"). The motor control unit 23 controls the operation of the sirocco fan motor 24 of the blower based on the air volume of the forced ventilation mode ("weak", "medium", "strong") stored by the operation switch 22. When the range hood 10 starts the forced ventilation operation in the first operation mode (step S13), the control flow of the range hood 10 thereafter shifts to [2] START shown in FIG. 7, which will be described later.

[0053] If the operation switch 22 determines that the received operation signal is not a signal received by the first receiving unit 13 (NO in step S10), it determines that the received signal is a second operation signal for activating the second operation mode, and determines the type of the second operation mode ("stop", "low", "medium", or "high"). If the operation switch 22 determines that the second operation mode is "stop" (YES in step S14), the operation stop state is continued (step S15), and the control flow of the range hood 10 thereafter returns to [1] START shown in FIG. 6.

[0054] If the operation switch 22 determines that the second operation mode is other than "stop" (NO in step S14), it determines that the second operation mode is the forced ventilation mode, and stores the air volume ("weak", "medium", or "strong"). When the range hood 10 starts the forced ventilation operation in the second operation mode (step S16), the control flow of the range hood 10 thereafter transitions to [3] START shown in Fig. 8, which will be described later.

[0055] Next, a control flow after the range hood 10 starts the forced ventilation operation in the first operation mode will be described. Fig. 7 is a flowchart for explaining the operation of the range hood 10 during the forced ventilation operation in the first operation mode.

[0056] In FIG. 6, when the range hood 10 starts the forced ventilation operation in the first operation mode (step S13), the process proceeds to [2] START shown in FIG.

[0057] 7, the range hood 10 is operating in the forced ventilation mode. The operation switch 22 stores one of the airflow volumes ("weak", "medium", or "strong") for the first operation mode, and the range hood 10 operates at the airflow volume ("weak", "medium", or "strong") stored in the operation switch 22.

[0058] When the range hood 10 is operating in forced ventilation mode in the first operating mode, and the operation switch 22 receives an operation signal from the first receiving unit 13 or the second receiving unit 14, the operation switch 22 determines whether the signal has been received by the first receiving unit 13 or the second receiving unit 14 (step S20).

[0059] If the operation switch 22 determines that the signal received is not the first receiving unit 13 (NO in step S20), it determines that the received signal is the second operation signal and does not accept the received second operation signal (step S21), and the range hood 10 continues to operate in the first operation mode and returns to [2] START in Figure 7.

[0060] That is, even if the second receiving unit 14 receives the second operation signal while the first operation mode is in operation, the first operation mode continues and the second operation mode is not activated. This control process makes it possible to prevent the setting of the operation mode from being changed from the living space 120 side during cooking when the air quality in the kitchen space 110 side rapidly deteriorates and forced ventilation is required, for example.

[0061] When the operation switch 22 determines that a signal has been received from the first receiving unit 13 (YES in step S20), it determines that the received signal is the latest first operation signal, and resets the air volume of the first operation mode that has already been stored ("weak", "medium", "strong") to the air volume of the first operation mode based on the latest first operation signal. In other words, when the first receiving unit 13 newly receives a first operation signal during forced ventilation operation in the first operation mode, it switches to the latest first operation mode and operates the range hood 10.

[0062] Operation switch 22 determines the type of the most recent first operation mode ("stop", "low", "medium", "high"), and if it is determined that the most recent first operation mode is "stop" (YES in step S22), operation switch 22 stores "stop", motor control unit 23 stops operation of sirocco fan motor 24 in the blower, and range hood 10 stops operation (step S23). When range hood 10 stops operation, the control flow of range hood 10 thereafter returns to [1] START shown in FIG. 6.

[0063] If the operation switch 22 determines that the latest first operation mode is other than "stop" (NO in step S22), the operation switch 22 resets the air volume of the first operation mode already stored ("weak", "medium", "strong") to the air volume of the latest first operation mode ("weak", "medium", "strong") and stores this. When the range hood 10 starts the forced ventilation operation in the latest first operation mode based on the latest first operation signal (step S24), the control flow of the range hood 10 thereafter returns to [2] START in FIG. 7.

[0064] Next, a control flow of the range hood 10 after the range hood 10 starts the forced ventilation operation in the second operation mode will be described. Fig. 8 is a flowchart for explaining the operation of the range hood 10 during the forced ventilation operation in the second operation mode.

[0065] In Fig. 6, when the range hood 10 starts the forced ventilation operation in the second operation mode (step S16), the process proceeds to [3] START shown in Fig. 8. In the initial state of Fig. 8, the range hood 10 is operating in the forced ventilation mode. The operation switch 22 stores one of the air volumes ("weak", "medium", or "strong") for the second operation mode, and the range hood 10 is operating with one of the air volumes ("weak", "medium", or "strong").

[0066] When the range hood 10 is operating in forced ventilation mode in the second operating mode, and the operation switch 22 receives an operation signal from the first receiving unit 13 or the second receiving unit 14, the operation switch 22 determines whether the signal has been received by the first receiving unit 13 or the second receiving unit 14 (step S30).

[0067] If the operation switch 22 determines that the received operation signal is a signal from the first receiving unit 13 (YES in step S30), it determines that the received signal is a first operation signal for operating the first operating mode.

[0068] Operation switch 22 determines the type of first operation mode ("stop", "low", "medium", "high"), and if it is determined that the first operation mode is "stop" (YES in step S31), operation switch 22 stores "stop", motor control unit 23 stops operation of sirocco fan motor 24 of the blower, and range hood 10 stops operation (step S32). When range hood 10 stops operation, the control flow of range hood 10 thereafter returns to [1] START shown in Fig. 6.

[0069] If the operation switch 22 determines that the first operation mode is other than "stop" (NO in step S31), it resets the air volume to the received first operation mode ("low", "medium", or "high"). In other words, if the first receiver 13 receives a new first operation signal while the second operation mode is in operation, it switches to the first operation mode and operates the range hood 10.

[0070] Operation switch 22 resets the air volume of the second operation mode ("weak", "medium", "strong") that has already been stored to the air volume of the first operation mode ("weak", "medium", "strong") and stores it. When range hood 10 starts the forced ventilation operation in the first operation mode based on the first operation signal (step S33), the control flow of range hood 10 thereafter transitions to [2] START in FIG. 7.

[0071] If the operation switch 22 determines that the signal is not one received by the first receiving unit 13 (NO in step S30), the received signal is determined to be the latest second operation signal, and the motor control unit 23 resets the air volume of the second operation mode already stored ("weak", "medium", "strong") to the air volume of the second operation mode based on the latest second operation signal. In other words, if a new second operation signal is received while the second operation mode is in operation, the range hood 10 is operated by switching to the latest second operation mode.

[0072] Operation switch 22 determines the type of the latest second operation mode ("stop", "low", "medium", "high"), and if it is determined that the latest second operation mode is "stop" (YES in step S34), operation switch 22 stores "stop", motor control unit 23 stops operation of sirocco fan motor 24 of the blower, and range hood 10 stops operation (step S35). When range hood 10 stops operation, the control flow of range hood 10 thereafter returns to [1] START shown in FIG. 6.

[0073] If the operation switch 22 determines that the latest second operation mode is other than "stop" (NO in step S34), it determines that the latest second operation mode is the forced ventilation mode, and the motor control unit 23 resets the air volume of the second operation mode already stored ("weak", "medium", "strong") to the air volume of the latest second operation mode ("weak", "medium", "strong") and stores this. When the range hood 10 starts the forced ventilation operation in the latest second operation mode (step S36), the control flow of the range hood 10 thereafter returns to [3] START shown in FIG. 8.

[0074] Fig. 9 shows a transition table of the operation of the range hood 10 according to this embodiment. As shown in the transition table of Fig. 9, between the first operation signal and the second operation signal, the first operation signal always takes priority.

[0075] In state [1] "stop", if the first receiving unit 13 receives a first operation signal, the state switches to the received first operation mode. If the first operation mode received by the first receiving unit 13 is "stop", the state [1] "stop" continues, and if the first operation mode received by the first receiving unit 13 is a forced ventilation mode (either "weak", "medium", or "strong"), the state transitions to state [2] "forced ventilation operation in first operation mode".

[0076] In state [1] "stop", if the second receiving unit 14 receives a second operation signal, the state switches to the received second operation mode. If the second operation mode received by the second receiving unit 14 is "stop", state [1] "stop" continues, and if the second operation mode received by the second receiving unit 14 is a forced ventilation mode (either "low", "medium", or "high"), state [3] "forced ventilation operation in the second operation mode" is entered.

[0077] In state [1] "stop", if the first receiving unit 13 and the second receiving unit 14 simultaneously receive the first and second operation signals, the first operation signal received by the first receiving unit 13 is given priority. In other words, the second operation signal received by the second receiving unit 14 is not accepted, and the received first operation mode is selected. If the first operation mode is "stop", state [1] "stop" is maintained, and if the first operation mode is a forced ventilation mode ("weak", "medium", or "strong"), the first operation mode is reset, and state [2] "forced ventilation operation in first operation mode" is entered.

[0078] In state [2] "forced ventilation operation in first operation mode", if the first receiver 13 receives a first operation signal, the state switches to the most recently received first operation mode. If the most recent first operation mode is "stopped", the state transitions to state [1] "stopped", and if the most recent first operation mode is a forced ventilation mode (either "low", "medium", or "high"), the state is reset to the most recent first operation mode and state [2] "forced ventilation operation in first operation mode" continues.

[0079] In state [2] “forced ventilation operation in first operation mode”, if a second operation signal is received by the second receiving unit 14, the second operation signal received by the second receiving unit 14 is not accepted, and the operation of state [2] is continued while the first operation mode is stored.

[0080] In state [2] "operating with forced ventilation in the first operation mode", if the first receiving unit 13 and the second receiving unit 14 simultaneously receive the first and second operation signals, the first operation signal received by the first receiving unit 13 is given priority. In other words, the second operation signal received by the second receiving unit 14 is not accepted, and the operation mode is switched to the most recently received first operation mode. If the most recently received first operation mode is "stopped", the state transitions to state [1] "stopped", and if the most recently received first operation mode is a forced ventilation mode ("weak", "medium", "strong"), the state is reset to the most recently received first operation mode, and state [2] "operating with forced ventilation in the first operation mode" is continued.

[0081] In state [3] "operating with forced ventilation in the second operation mode", if the first receiver 13 receives a first operation signal, the operation mode is switched from the second operation mode to the received first operation mode. If the first operation mode is "stopped", the operation mode transitions to state [1] "stopped", and if the first operation mode is a forced ventilation mode ("low", "medium", "strong"), the operation mode is reset to the first operation mode and the operation mode transitions to state [2] "operating with forced ventilation in the first operation mode".

[0082] In state [3] "operating with forced ventilation in the second operation mode", if the second receiving unit 14 receives a second operation signal, the state switches to the most recently received second operation mode. If the most recently received second operation mode is "stopped", the state transitions to state [1] "stopped", and if the most recently received second operation mode is a forced ventilation mode ("low", "medium", "strong"), the state is reset to the most recently received second operation mode and state [3] "operating with forced ventilation in the second operation mode" continues.

[0083] In state [3] "operating in forced ventilation in the second operation mode", if the first receiving unit 13 and the second receiving unit 14 simultaneously receive the first and second operation signals, the first operation signal received by the first receiving unit 13 is given priority. In other words, the second operation signal received by the second receiving unit 14 is not accepted, and the operation mode is switched to the most recently received first operation mode. If the first operation mode is "stopped", the state transitions to state [1] "stopped", and if the first operation mode is a forced ventilation mode ("low", "medium", "strong"), the state is reset to the first operation mode and state [2] "operating in forced ventilation in the first operation mode" is continued.

[0084] As described above, the range hood 10 of this embodiment has receivers for receiving operation signals from the remote control located in at least two places on the housing 12. By providing receivers in two places, on the kitchen space 110 side and the living space 120 side of the range hood 10, to expand the reception area, it becomes possible to operate the remote control from both the kitchen space 110 side and the living space 120 side, and also to prevent failure to receive a signal.

[0085] Furthermore, first receiving unit 13 is installed facing downward on the bottom surface of range hood 10, and second receiving unit 14 is installed facing sideways on the side surface of range hood 10 facing living space 120, and they are disposed in a position where receiving area 13A of first receiving unit 13 and receiving area 14A of second receiving unit 14 do not overlap. This configuration prevents first receiving unit 13 from erroneously receiving an operation signal transmitted from living room-side remote control 120A, and reduces malfunction of range hood 10.

[0086] In this embodiment, even if a second operation signal is received from the living space 120 side via the second receiving unit 14 while the first operation mode set on the kitchen space 110 side via the first receiving unit 13 is in operation, the first operation mode set on the kitchen space 110 side is prioritized, and the second operation mode is not operated. With this configuration, even if a user in the living space 120 tries to change the set air volume while the user who is cooking is ventilating at the desired air volume, the operation of the user who is cooking can be prioritized until the user who is cooking sets it to "stop". This reduces the stress of having the operation mode changed from the living space 120 side during cooking that requires forced ventilation on the kitchen space 110 side.

[0087] Next, a range hood according to yet another embodiment will be described. The configuration of the range hood 10 according to the other embodiment is basically the same as that shown in Figures 1, 2, and 5, but differs in that it is further provided with a constant ventilation function, and is configured with five operation modes, for example, "stop", "constant ventilation", "low", "medium", and "high".

[0088] "Continuous ventilation" is a third operation mode that aims to exhaust the air in the room 100, including the kitchen space 110 and the living space 120, to the outside of the room 100 by constant ventilation operation. The third operation mode "constant ventilation" performs ventilation at an air volume (approximately 80 to 110 m3 / hour) specified by the Building Standards Act. When the range hood 10 is used as a constant ventilation equipment, continuous ventilation is always performed in the third operation mode "constant ventilation" except when cooking or cleaning is being performed.

[0089] FIG. 10 shows a table for explaining the operation modes of the range hood 10 according to another embodiment. In another embodiment, an operation signal other than "constant ventilation" received by the first receiving unit 13 is defined as a first operation signal for operating the first operation mode. An operation signal other than "constant ventilation" received by the second receiving unit 14 is defined as a second operation signal for operating the second operation mode. An operation signal for "constant ventilation" received by the first receiving unit 13 or the second receiving unit 14 is defined as a third operation signal for operating the third operation mode "constant ventilation".

[0090] The third operation signal can be transmitted from either the kitchen side remote control 110A or the living room side remote control 120A. Also, the third operation signal can be received from either the first receiving unit 13 or the second receiving unit 14.

[0091] 11 to 13 are flow charts for explaining the operation of the range hood 10 according to another embodiment of the present invention.

[0092] As shown in Fig. 11, in the initial state, the airflow of the range hood 10 is set to "stop" or "constant ventilation". In the initial state, when the operation switch 22 stores the airflow setting of "stop", the sirocco fan motor 24 of the blower is stopped. When the operation switch 22 stores the airflow setting of "constant ventilation", the sirocco fan motor 24 of the blower is operated in the third operation mode of "constant ventilation".

[0093] When the operation switch 22 receives a signal from the first receiving unit 13 or the second receiving unit 14, it determines whether the signal has been received by the first receiving unit 13 or the second receiving unit 14 (step S40).

[0094] When the operation switch 22 receives an operation signal from the first receiving unit 13 (YES in step S40), it determines the type of operation mode of the received operation signal ("stop", "constant ventilation", "weak", "medium", "strong"). When the received operation signal is "constant ventilation", the operation switch 22 determines that it has received a third operation signal, and when the received operation signal is other than "constant ventilation", it determines that it has received a first operation signal.

[0095] If the operation mode of the received operation signal is "stop" or "constant ventilation" (YES in step S41), the operation switch 22 resets the already stored airflow rate of the operation mode "stop" or "constant ventilation" to the airflow rate of the operation mode based on the received operation signal "stop" or "constant ventilation" and stores it, and the motor control unit 23 continues "stop" or "constant ventilation" (step S42).

[0096] That is, if the initial state is "stop", the stopped state is continued if the first receiving unit 13 receives a "stop" signal, and if the first receiving unit 13 receives the third operation signal "constant ventilation", the motor control unit 23 switches from the stopped state to constant ventilation and operates. If the initial state is "constant ventilation", the constant ventilation operation is stopped if the first receiving unit 13 receives a "stop" signal, and the constant ventilation operation is continued if the first receiving unit 13 receives the third operation signal "constant ventilation" signal.

[0097] If the operation switch 22 determines that the operation mode of the received operation signal is other than "stop" or "constant ventilation" (NO in step S41), the operation switch 22 stores the air volume ("low", "medium", or "high") of the received first operation mode. When the range hood 10 starts forced ventilation operation in the first operation mode (step S43), the control flow of the range hood 10 thereafter transitions to [2] START shown in Fig. 12, which will be described later.

[0098] If the operation switch 22 determines that the received operation signal is not a signal received by the first receiving unit 13 (NO in step S40), it determines the type of the received signal ("stop", "constant ventilation", "weak", "medium", "strong"). If the operation signal received by the second receiving unit 14 is "constant ventilation", the operation switch 22 determines that a third operation signal has been received, and if the received operation signal is other than "constant ventilation", it determines that a second operation signal has been received.

[0099] If the operation switch 22 determines that the received operation signal is "stop" or "constant ventilation" (YES in step S44), the operation switch 22 resets the already stored airflow volume of the operation mode of "stop" or "constant ventilation" to the airflow volume of the operation mode of "stop" or "constant ventilation" based on the most recently received operation signal, stores it, and continues "stop" or "constant ventilation" (step S45).

[0100] That is, if the initial state is "stop", the stopped state continues if the second receiving unit 14 receives a "stop" signal, and the operation switches from the stopped state to constant ventilation if the second receiving unit 14 receives a "constant ventilation" signal. If the initial state is "constant ventilation", the constant ventilation operation stops if the second receiving unit 14 receives a "stop" signal, and the constant ventilation operation continues if the second receiving unit 14 receives a "constant ventilation" signal.

[0101] If it is determined that the operation mode received by the second receiving unit 14 is other than "stop" or "constant ventilation" (NO in step S44), the operation switch 22 stores the air volume ("low", "medium", or "high") of the received second operation mode. When the range hood 10 starts forced ventilation operation in the second operation mode (step S46), the control flow of the range hood 10 thereafter transitions to [3] START shown in Fig. 13, which will be described later.

[0102] Next, a control flow after the range hood 10 starts the forced ventilation operation in the first operation mode will be described. Fig. 12 is a flowchart for explaining the operation of the range hood 10 during the forced ventilation operation in the first operation mode.

[0103] In FIG. 11, when the range hood 10 starts the forced ventilation operation in the first operation mode (step S43), the process proceeds to [2] START shown in FIG.

[0104] 12, the range hood 10 is in forced ventilation operation in the first operation mode. The operation switch 22 stores one of the airflow volumes ("weak", "medium", or "strong") for the first operation mode, and the range hood 10 operates at the airflow volume ("weak", "medium", or "strong") stored in the operation switch 22.

[0105] When the range hood 10 is operating in forced ventilation mode in the first operating mode, when the operation switch 22 receives an operation signal from the first receiving unit 13 or the second receiving unit 14, the operation switch 22 determines whether the signal has been received by the first receiving unit 13 or the second receiving unit 14 (step S50).

[0106] If the operation switch 22 determines that the signal received is not the first receiving unit 13 (NO in step S50), it determines that the received signal is the second operation signal and does not accept the received second operation signal (step S51), and the range hood 10 continues to operate in the first operation mode and returns to [2] START in Figure 12.

[0107] When the operation switch 22 determines that a signal has been received from the first receiving unit 13 (YES in step S50), it determines the type of the received signal ("stop", "constant ventilation", "weak", "medium", "strong") (step S52). When the operation signal received by the first receiving unit 13 is "constant ventilation", the operation switch 22 determines that a third operation signal has been received, and when the received operation signal is other than "constant ventilation", it determines that the most recent first operation signal has been received.

[0108] When the operation switch 22 determines that the operation mode of the operation signal received by the first receiving unit 13 is other than "stop" or "constant ventilation" (NO in step S52), the operation switch 22 resets the air volume of the first operation mode already stored ("weak", "medium", "strong") to the latest air volume of the first operation mode ("weak", "medium", "strong") and stores this. When the range hood 10 starts forced ventilation operation based on the latest first operation signal (step S53), the control flow of the range hood 10 thereafter returns to [2] START in FIG. 12.

[0109] If the operation signal received by the first receiving unit 13 is other than "stop" (NO in step S54), the operation switch 22 stores the received third operation signal "constant ventilation" and continues the forced ventilation operation at the air volume ("weak", "medium", "strong") of the first operation mode that has already been stored (step S55). That is, if the first receiving unit 13 receives the "constant ventilation" signal during forced ventilation operation in the first operation mode, the range hood 10 continues the forced ventilation operation in the first operation mode and the third operation mode "constant ventilation" becomes a standby state. The control flow of the range hood 10 thereafter returns to [2] START in FIG. 12.

[0110] When the operation signal received by the first receiving unit 13 is "stop" (YES in step S54), if the operation switch 22 has stored the standby state of "constant ventilation" (step S55), the range hood 10 starts operation in the standby third operation mode of "constant ventilation" and does not accept the received operation signal of "stop". If the third operation mode of "constant ventilation" is not in the standby state, the operation switch 22 stores "stop", the motor control unit 23 stops operation of the sirocco fan motor 24 of the blower, and the range hood 10 stops operation. When the range hood 10 stops operation or starts the constant ventilation operation (step S56), the control flow of the range hood 10 thereafter shifts to [1] START shown in FIG. 11.

[0111] Next, a control flow after the range hood 10 starts the forced ventilation operation in the second operation mode will be described. Fig. 13 is a flowchart for explaining the operation of the range hood 10 during the forced ventilation operation in the second operation mode.

[0112] In Fig. 11, when the range hood 10 starts the forced ventilation operation in the second operation mode (step S46), the process proceeds to [3] START shown in Fig. 13. In the initial state of Fig. 13, the range hood 10 is operating in the forced ventilation mode. The operation switch 22 stores one of the air volumes ("weak", "medium", or "strong") for the second operation mode, and the range hood 10 is operating with one of the air volumes ("weak", "medium", or "strong").

[0113] When the range hood 10 is operating in forced ventilation mode in the second operating mode, when the operation switch 22 receives an operation signal from the first receiving unit 13 or the second receiving unit 14, the operation switch 22 determines whether the signal was received by the first receiving unit 13 or the second receiving unit 14 (step S60).

[0114] When the second operating mode is in operation, if a new operation signal is received by the first receiving unit 13, the operating mode is switched based on the newly received operation signal by the first receiving unit 13, and the range hood 10 is operated.

[0115] When the operation switch 22 determines that the received operation signal is a signal from the first receiving unit 13 (YES in step S60), it determines the type of the received signal ("stop", "constant ventilation", "weak", "medium", "strong"). When the operation signal received by the first receiving unit 13 is "constant ventilation", the operation switch 22 determines that the third operation signal has been received, and when the received operation signal is other than "constant ventilation", it determines that the first operation signal has been received.

[0116] When the operation switch 22 determines that the operation mode of the signal received by the first receiving unit 13 is "stop" or "constant ventilation" (YES in step S61), the operation switch 22 resets and stores the air volume of the operation mode already stored ("low", "medium", "strong") to "stop" or "constant ventilation" of the operation mode based on the signal received by the first receiving unit 13, and switches to "stop" or "constant ventilation" (step S62). After the range hood 10 has stopped operation or started constant ventilation operation, the control flow proceeds to [1] START in FIG. 11.

[0117] When the operation switch 22 determines that the operation mode of the signal received by the first receiving unit 13 is other than "stop" or "constant ventilation" (NO in step S61), it resets the air volume of the second operation mode already stored ("weak", "medium", "strong") to the air volume of the first operation mode based on the received first operation signal ("weak", "medium", "strong") and stores this. When the range hood 10 starts forced ventilation operation in the first operation mode based on the first operation signal (step S63), the control flow of the range hood 10 thereafter proceeds to [2] START in FIG. 12.

[0118] When the second operating mode is in operation, if a new operation signal is received by the second receiving unit 14, the operating mode is switched based on the newly received operation signal by the second receiving unit 14, and the range hood 10 is operated.

[0119] If the operation switch 22 determines that the signal received is not the signal received by the first receiving unit 13 (NO in step S60), it determines the type of the received signal ("stop", "constant ventilation", "weak", "medium", "strong"). If the operation signal received by the second receiving unit 14 is "constant ventilation", the operation switch 22 determines that the third operation signal has been received, and if the received operation signal is other than "constant ventilation", it determines that the second operation signal has been received.

[0120] If the operation switch 22 determines that the operation mode of the received signal is other than "stop" or "constant ventilation" (NO in step S64), it resets the air volume of the second operation mode that has already been stored ("weak", "medium", "strong") to the air volume of the second operation mode based on the most recent second operation signal ("weak", "medium", "strong") and stores this. When the range hood 10 starts forced ventilation operation in the second operation mode based on the most recent second operation signal (step S65), the control flow of the range hood 10 thereafter transitions to [3] START in FIG. 13.

[0121] If the operation signal received by the second receiving unit 14 is other than "stop" (NO in step S66), the operation switch 22 stores the "constant ventilation" of the received third operation signal, and continues the forced ventilation operation with the air volume ("weak", "medium", or "strong") of the second operation mode that has already been stored (step S67). In other words, if the range hood 10 receives a "constant ventilation" signal while performing forced ventilation operation in the second operation mode, the range hood 10 continues the forced ventilation operation in the second operation mode, and the "constant ventilation" of the third operation mode becomes a standby state. The control flow of the range hood 10 thereafter returns to [3] START in FIG. 13.

[0122] If the operation signal received by the second receiving unit 14 is "stop" (YES in step S66) and the operation switch 22 has stored the standby state of "constant ventilation" (step S67), the range hood 10 starts operation in the standby third operation mode "constant ventilation" and does not accept the received operation signal of "stop." If the third operation mode "constant ventilation" is not in standby, the operation switch 22 stores "stop," the motor control unit 23 stops operation of the blower sirocco fan motor 24, and the range hood 10 stops operation. When the range hood 10 stops operation or starts constant ventilation operation (step S68), the control flow of the range hood 10 thereafter transitions to [1] START shown in FIG. 11. As described above, the range hood 10 according to another embodiment has a third operation mode for continuous ventilation. The range hood 10 does not accept the third operation signal received from the second receiver while operating in the first operation mode. This control method prevents the risk of injury due to the unintended start of the third operation mode in standby when the user cleans the range hood 10 after stopping the first operation mode.

[0123] The configuration and operation of the range hood 10 of the present invention have been described above by taking two exemplary embodiments as examples, but the configuration and operation of the range hood 10 of the present invention are not limited to these. For example, as another configuration for preventing erroneous reception of operation signals from two remote controls, different types of remote controls with dedicated operation signals set for the kitchen remote control 110A and the living room remote control 120A are used, and the first receiving unit 13 only receives operation signals transmitted from the kitchen remote control 110A and does not receive operation signals transmitted from the living room remote control 120A. Similarly, the second receiving unit 14 may only receive operation signals transmitted from the living room remote control 120A and not receive operation signals transmitted from the kitchen remote control 110A. With this configuration, erroneous reception of operation signals can be prevented regardless of the receiving areas of the first receiving unit 13 and the second receiving unit 14.

[0124] In the range hood 10 of this embodiment, the signal received by the first receiving unit 13 or the second receiving unit 14 is received as the same signal, and the blower is operated at the same air volume based on the received signal. However, this is not limited to this case. For example, when the received signal is a "strong" operation signal, if the signal is received by the first receiving unit 13, the blower's air volume can be operated at "strong", while if the signal is received by the second receiving unit 14, the blower's air volume can be operated at "medium". In other words, the air volume control by the signal received by the second receiving unit 14 may be different from the air volume control by the signal received by the first receiving unit 13. In addition, various modifications are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0125] 10. Range Hood 12 Housing 13 First receiving unit 14 Second receiving unit 15 Main body 16 Food 18 Front side plate 18A Pedestal 19 Rear side plate 19A Pedestal 20 Left side plate 20A Pedestal 21 Right side plate 21A Pedestal 22 Operation switch 23 Motor control unit 24 Sirocco fan motor 100 rooms 110 Kitchen space 110A Kitchen remote control 111 Kitchen counter 112 Stove 120 Living space 120A Living room remote control

Claims

1. A range hood is provided in a room having a kitchen space in which a stove is provided and a living space connected to the kitchen space, and has a first operation mode for discharging air from the kitchen space to the outside of the room, and a second operation mode for discharging air from the living space to the outside of the room, a first receiving unit that receives a first operation signal that activates the first operation mode; A second receiving unit that receives a second operation signal that activates the second operation mode, A range hood characterized in that, even if the second operating signal is received by the second receiving unit while the first operating mode is in operation, the first operating mode is continued and the second operating mode is not operated.

2. The range hood according to claim 1, characterized in that when the first operating signal is received by the first receiving unit while the second operating mode is in operation, the second operating mode is stopped and the first operating mode is operated.

3. a housing part for supporting a blower therein and fixed to a wall part or a ceiling part of the room; The first receiving unit is disposed on a design surface of the housing part above the stove and receives the first operation signal operated from the kitchen space, The range hood described in claim 1 or claim 2, characterized in that the second receiving unit is arranged on the design surface of the housing unit facing the living space, and receives the second operation signal operated from the living space.

4. A range hood as described in claim 1 or claim 2, characterized in that when the first operating signal is received at the first receiving unit and the second operating signal is received at the second receiving unit simultaneously, the first operating mode is activated.

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