KR102504251B1 - An ultraviolet sterilizer for kitchen - Google Patents

Abstract

Disclosed is an ultraviolet sterilizer for a kitchen located above a sink. Disclosed kitchen ultraviolet sterilizer is formed in a long housing structure having an internal space, a sterilization LED module located in the internal space of the housing structure and emitting UVA light downward to sterilize the sink - the sterilization LED module includes a UVA light - A plurality of UV LEDs emitting light are mounted - An LED module for lighting, located in parallel to the LED module for sterilization in the inner space of the housing structure, to illuminate the sink - The LED module for lighting emits white light A plurality of LEDs are mounted - A printed circuit board located in the inner space of the housing structure, on which a control unit involved in the operation of the LED module for sterilization and the LED module for lighting is mounted, covering the lower part of the housing structure to When the sterilization LED module is turned on or the illumination LED module is turned on, a floodlight for transmitting UVA light or white light, and a sensor unit having a first sensing unit and a second sensing unit for detecting a human body - the first and transmitting a detection result signal to the control unit when at least one of the first sensing unit and the second sensing unit detects a human body.

Description

UV sterilizer for kitchen{AN ULTRAVIOLET STERILIZER FOR KITCHEN}

The present invention relates to an ultraviolet sterilizer for kitchen use, and more specifically, to an ultraviolet sterilizer for kitchen use capable of sterilizing a sink and its surroundings using UVA light.

In order to sterilize various bacteria breeding in various kitchen utensils including sinks, dish drying racks, tableware, knives, cutting boards, etc., products using ultraviolet LEDs are being used. An example of a conventional ultraviolet sterilizer for kitchen use is Korea Utility Model Registration 20-0429527 (2006.10.17) (hereinafter, prior art 1), Republic of Korea Patent Publication 10-2019-0111727 (2019.10.02) (hereinafter, prior art 2), etc. has been disclosed. The prior art 1 discloses a kitchen ultraviolet sterilizer that is formed in a rectangular parallelepiped shape so as to sterilize kitchen tableware using ultraviolet rays and can be configured as a built-in type in a sink, and in the prior art 2, an ultraviolet LED Disclosed is a knife sterilization block capable of sterilizing kitchen knives using a sterilization chamber, but it enables sterilization of knives, cutting boards, dishes, etc. It is not a device that can directly sterilize an area.

The wavelength band of ultraviolet rays is generally about 100 nm to 400 nm, and is generally subdivided into UVA for the 315 nm to 400 nm band, UVB for the 280 nm to 315 nm band, and UVC for the 100 nm to 280 nm band, and sometimes subdivided slightly differently in some cases. The wavelength band of visible light is generally about 380 nm to 800 nm. Among ultraviolet rays, patented UVC has strong cell destruction and sterilizing power, so special care is required in using it in an environment where the human body is exposed to UVC. In addition, even in the case of UVA, when the skin is exposed, it penetrates the epidermal layer and reaches the dermis to accelerate skin aging, create spots and freckles, and is known to cause skin cancer when the exposure time is prolonged. Therefore, even when considering a sterilization device using UVA, it is necessary to prevent or minimize exposure to the human body.

An object to be solved by the present invention is to provide a kitchen ultraviolet sterilizer capable of minimizing exposure of the human body to ultraviolet rays in sterilizing a sink and its surrounding area using ultraviolet rays of the UVA band among ultraviolet rays.

The problem to be solved by the present invention is to provide a kitchen ultraviolet sterilizer that includes both a lighting function and a sterilization function.

A kitchen ultraviolet sterilizer according to one aspect of the present invention for solving the above problems is a kitchen ultraviolet sterilizer located on the top of a sink, a housing structure formed elongated and having an internal space, located in the internal space of the housing structure and UVA light A sterilization LED module for sterilizing the sink by emitting downward light - A plurality of UV LEDs emitting UVA light are mounted on the sterilization LED module - in parallel with the sterilization LED module in the internal space of the housing structure A lighting LED module for lighting the sink, wherein a plurality of LEDs emitting white light are mounted on the lighting LED module, located in the inner space of the housing structure, and the sterilization LED module and the lighting LED module A printed circuit board on which a control unit involved in the operation of is mounted, a floodlight plate for transmitting UVA light or white light when the sterilization LED module is turned on or the lighting LED module is turned on by covering the lower part of the housing structure. , and a sensor unit having a first sensing unit and a second sensing unit for detecting a human body - when a human body is detected by at least one of the first sensing unit and the second sensing unit, a detection result signal is transmitted to the control unit. It is characterized by including -.

According to one embodiment, the ultraviolet sterilizer for kitchen has an adhesive portion positioned on an upper surface of the housing structure so as to be attachable to a lower portion of an upper cabinet of the sink positioned above the sink.

According to an embodiment, the kitchen UV sterilizer has an automatic mode that starts when power is applied to the kitchen UV sterilizer and a manual mode that starts when a user presses a push button. Right after the primary human body approaches, depending on the primary human body detection by the sensor unit, the control unit turns on the lighting LED module, and in a state where the lighting LED module is turned on, the primary human body by the sensor unit When the detection is resolved, the control unit turns off the lighting LED module and turns on the sterilization LED module,

In a state where the lighting LED module is turned off and the sterilization LED module is turned on, when a preset sterilization duration time - the preset sterilization duration time is counted from when the sterilization LED module is turned on - has elapsed, the control The unit turns off the sterilization LED module depending on the end of the preset sterilization duration time, a state in which the lighting LED module is turned off and the sterilization LED module is turned on, and the preset sterilization duration time has not elapsed In, when there is a secondary human body detection by the sensor unit, the control unit turns on the lighting LED module and turns off the sterilization LED module depending on the secondary human body detection by the sensor unit, When the secondary human body detection by the sensor unit is resolved in a state where the LED module is turned on and the LED module for sterilization is turned off and the preset sterilization duration time has not elapsed, the control unit controls the LED module for lighting. is turned off and the sterilization LED module is turned on, and when the preset sterilization duration time elapses in a state where the lighting LED module is turned off and the sterilization LED module is turned on, the control unit controls the preset sterilization duration time The sterilization LED module is turned off depending on the end of the sterilization LED module, and a preset idle time in a state in which the sterilization LED module is turned off - the preset idle time depends on the end of the preset sterilization duration time to the control unit. counting from the time when the LED module for sterilization is turned off by - is a mode in which the control unit turns on the LED module for sterilization depending on the end of the predetermined idle time.

According to an embodiment, the kitchen UV sterilizer has an automatic mode that starts when power is applied to the kitchen UV sterilizer and a manual mode that starts when a user presses a push button. Depending on pressing the button, after a predetermined delay time elapses, the lighting LED module is turned off and the sterilization LED module is turned on, and in a state where the lighting LED module is turned off and the sterilization LED module is turned on, the preset sterilization continues. When the time - the preset sterilization duration time is counted from the time the sterilization LED module is turned on - has elapsed, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time, When the sensor unit detects a human body in a state in which the LED module for lighting is turned off and the LED module for sterilization is turned on and the preset sterilization duration time has not elapsed, depending on the detection of the human body by the sensor unit The control unit turns on the LED module for lighting and turns off the LED module for sterilization, and in a state in which the LED module for lighting is turned on and the LED module for sterilization is turned off and the preset sterilization duration time has not elapsed. When the human body detection by the sensor unit is resolved, the control unit turns off the LED module for lighting and turns on the LED module for sterilization, and in a state where the LED module for lighting is turned off and the LED module for sterilization is turned on, the LED module for sterilization is turned on in advance. When the set sterilization duration time has elapsed, the control unit turns off the LED module for sterilization depending on the end of the preset sterilization duration time, thereby ending the mode.

According to an embodiment, the kitchen UV sterilizer has an automatic mode that starts when power is applied to the kitchen UV sterilizer and a manual mode that starts when a user presses a push button. Right after the primary human body approaches, depending on the primary human body detection by the sensor unit, the control unit turns on the lighting LED module, and in a state where the lighting LED module is turned on, the primary human body by the sensor unit When the detection is resolved, the control unit turns off the lighting LED module and turns on the sterilization LED module, and in a state where the lighting LED module is turned off and the sterilization LED module is turned on, a preset sterilization duration - The preset sterilization duration time is counted from when the sterilization LED module is turned on - when this has elapsed, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time, and the lighting In a state where the LED module is turned off and the LED module for sterilization is turned on and the preset sterilization duration time has not elapsed, when there is a secondary human body detection by the sensor unit, the secondary human body by the sensor unit Depending on the detection, the control unit turns on the LED module for lighting and turns off the LED module for sterilization, and the LED module for lighting is turned on and the LED module for sterilization is turned off, and the preset sterilization duration time does not elapse. When the secondary human body detection by the sensor unit is resolved in the absence state, the control unit turns off the LED module for lighting and turns on the LED module for sterilization, and the LED module for lighting is turned off and the LED module for sterilization is turned off. When the preset sterilization duration time elapses in this lighted state, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time, and in the state in which the sterilization LED module is turned off mi When the preset idle time - the preset idle time is counted from the time when the sterilization LED module is turned off by the control unit depending on the end of the preset sterilization duration - has elapsed, the control unit A mode in which the LED module for sterilization is turned on depending on the end of a preset idle time, and in the manual mode, the LED module for lighting is turned off after a predetermined delay time has elapsed depending on the user pressing the push button, and the sterilization is performed. In a state where the LED module for lighting is turned on, the LED module for lighting is turned off, and the LED module for sterilization is turned on, a preset sterilization duration time - The preset sterilization duration time is counted from when the LED module for sterilization is turned on - When this has elapsed, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time, the LED module for lighting is turned off and the LED module for sterilization is turned on, and the preset sterilization In a state where the duration time has not elapsed, when the sensor unit detects a human body, the control unit turns on the LED module for lighting and turns off the LED module for sterilization depending on the detection of the human body by the sensor unit, When the LED module for lighting is turned on and the LED module for sterilization is turned off and the human body detection by the sensor unit is resolved in a state where the preset sterilization duration time has not elapsed, the control unit turns off the LED module for lighting. and the sterilization LED module is turned on, and when the preset sterilization duration time elapses in a state where the lighting LED module is turned off and the sterilization LED module is turned on, the control unit terminates the preset sterilization duration time It is a mode that is terminated by turning off the LED module for sterilization depending on, and when the user presses the push button while the automatic mode is in progress, the manual mode is switched, and after the manual mode is finished, the automatic mode is switched. it is exchanged

The present invention provides an ultraviolet sterilizer for kitchen use, thereby minimizing exposure of the human body to ultraviolet rays in sterilizing a sink and its surrounding area using ultraviolet rays, as well as providing both a lighting function and a sterilization function.

1 is a perspective view of a UV sterilizer for kitchen use according to an embodiment of the present invention;
2 is an exploded view of an ultraviolet sterilizer for kitchen use according to an embodiment of the present invention;
3 is a side cross-sectional view of an ultraviolet sterilizer for kitchen use according to an embodiment of the present invention;
4 is a flowchart for explaining an automatic mode (MODE 1) of a UV sterilizer for kitchen use according to an embodiment of the present invention;
5 is a flowchart for explaining the manual mode (MODE 2) of the UV sterilizer for kitchen use according to an embodiment of the present invention.

Hereinafter, a kitchen ultraviolet sterilizer according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. It should be noted that the accompanying drawings and embodiments described with reference to them are simplified and illustrated with the intention of helping those skilled in the art to understand the present invention.

1 is a perspective view of a UV sterilizer for kitchen use according to an embodiment of the present invention, FIG. 2 is an exploded view of the UV sterilizer for kitchen use according to an embodiment of the present invention, and FIG. 3 is a UV sterilizer for kitchen use according to an embodiment of the present invention. , Figure 4 is a flow chart for explaining the automatic mode (MODE 1) of the ultraviolet sterilizer for kitchen according to an embodiment of the present invention, Figure 5 is a manual ultraviolet sterilizer for kitchen according to an embodiment of the present invention It is a flowchart for explanation of mode (MODE 2). In particular, FIG. 2 shows the left part in a decomposed kitchen UV sterilizer according to an embodiment of the present invention, and the right part is shown in a coupled state for better understanding.

1 to 3, the kitchen ultraviolet sterilizer 100 of the present invention includes a housing structure 110, a sterilization LED module 120, a lighting LED module 130, a printed circuit board 140, and light transmission. A plate 150 and a sensor unit 160 are included. In addition, the kitchen ultraviolet sterilization unit 100 includes fixing and protecting structures 191, 192, and 193 (hereinafter referred to collectively as 190). In addition, although not shown in the drawings, a three-phase slide switch for selecting one of power off, automatic mode, and manual mode is further provided. The manual mode is switched by selecting the 3-phase slide switch as the manual mode and then pressing the push button 170. If necessary, it can be selected to operate in the manual mode immediately, or it can be switched to the manual mode in the middle of the automatic mode.

The housing structure 110 is elongated and has an internal space. An LED module 120 for sterilization, an LED module 130 for lighting, and a printed circuit board 140 are positioned in the inner space. The inner space is formed in a slot type so that the elongated LED module 120 for sterilization and the LED module 130 for lighting can be smoothly inserted. The LED module 120 for sterilization is inserted into the first slot 111 of the housing structure 110, and the LED module 130 for lighting is inserted into the second slot 112. The upper surface of the housing structure 110 has an adhesive portion (not shown) to be attached to the lower portion of the upper cabinet of the sink located above the sink. The adhesive portion is located on the upper surface 113 of the housing structure 110 . The adhesive portion may be formed by applying an adhesive to a partial area or the entire area on the upper surface 113 of the housing structure 110, or a double-sided tape type on a partial area on the upper surface 113 of the housing structure 110. Alternatively, it may be formed by being adhered to the entire area. For the fixing of the housing structure 110, that is, the smooth fixing of the entire kitchen UV sterilizer 100 of the present invention, it is preferable that the adhesive portion is evenly formed on the upper surface 113 of the housing structure 110. In addition, through the upper part 191 of the fixing and protecting structure 190, it can be further fixed to the upper cabinet of the sink with a piece for wood.

The LED module 120 for sterilization is a component for sterilizing a sink by emitting UVA light downward and located in the inner space of the housing structure 110 . In the present specification, the meaning of "sterilizing a sink" is defined to include a wide range of sterilization including the sink constituting the sink, its sides and dish drying racks or gas stoves placed on the sides thereof. The LED module 120 for sterilization is inserted into the first slot 111 in the inner space of the housing structure 110, and a plurality of UV LEDs 121 emitting UVA light are mounted. The number of UV LEDs 121 may be 24, but may vary depending on the length of the UV sterilizer 100 for kitchen use according to the present invention.

The UVA light irradiation angle (θ1, FIG. 3 ) of the sterilization LED module 120 is approximately 120 degrees. The wavelength band of UVA light here is a wavelength band that includes a part of the short wavelength region of visible light, and a wavelength band of 315 nm to 410 nm is generally used, and preferably, a wavelength band of 405 nm is used. Compared to UVC, in the case of UVA, the sterilization target area must be irradiated for about 1 hour to see the sterilization effect. As will be described later, the preset sterilization duration in the present invention is preferably 1 hour (60 minutes). . On the other hand, even in the case of UVA, since the human body should not be exposed to the human body for a long time, as will be described later in order to prevent human exposure, the LED module 120 for sterilization is properly operated by the action between the sensor unit 160 and the control unit 142. lights up or goes out

The lighting LED module 130 is inserted into the second slot 112 in the housing structure 110 so as to be parallel to the sterilization LED module 120 in the inner space of the housing structure 110 . A plurality of LEDs 131 emitting white light are mounted on the LED module for lighting. Each of the LEDs 131 emitting white light may be an LED package composed of red, green, and blue LED chips or an LED package implemented by a combination of a blue LED chip and a phosphor. The number of LEDs 131 in the lighting LED module 130 may be 24, but likewise may vary according to the length of the ultraviolet sterilizer 100 for kitchen use according to the present invention.

The printed circuit board 140 is located in the inner space of the housing structure 110, and the control unit 142 involved in the operation of the LED module 120 for sterilization and the LED module 130 for lighting is mounted. Therefore, the printed circuit board 140 is electrically connected to the sterilization LED module 120, the lighting LED module 130, and the sensor unit 160 side. The control unit 141 receives a detection result signal according to a human body detection result in the sensor unit 160, and accordingly turns on or off the sterilization LED module 120 and the lighting LED module 130 appropriately. The control unit 141 includes a timer for setting sterilization duration and idle time. The organic action between the sensor unit 160 and the control unit related to lighting of the sterilization LED module 120 and the lighting LED module 130 will be described later with reference to FIGS. 4 and 5 .

The floodlight panel 150 is a structure for covering the lower portion of the housing structure 110, and is formed of a transparent or translucent material, and when the sterilization LED module 120 or the lighting LED module 130 is turned on, UVA light or white light It acts as a sterilization or lighting for the sink by transmitting light. In addition, since the floodlight panel 150 directly faces the sink, there is no gap downward to prevent water from entering the inner space of the housing structure 110 in preparation for splashing water from the sink during washing or cleaning. It is preferable that the structure coupled to the housing structure 110 so as not to.

The sensor unit 160 has a first sensing unit S1 and a second sensing unit S2 for sensing a human body. The first sensing unit S1 may be a passive infrared sensor (PIR sensor), and the second sensing unit S2 may be an ultrasonic sensor. The sensor unit 160 is composed of two units as described above, and the detection result is directed to the control unit 142 according to the OR operation (ie, when the human body is sensed from one side of the two, a detection result signal is generated). A signal is transmitted so that an operation error of the sensor unit 160 does not occur even when one of the two fails. The sensor unit 160 may be positioned inside the fixing and protecting structure 190 by properly adjusting an angle to detect the movement of a human body in a certain section (acute angle range, θ2). In the fixing and protecting structure 190, the lower part 192 is formed of a transparent material so that the sensor unit 160 can smoothly sense it. A push button 170 is disposed on the front part 193 of the fixing and protecting structure 190 so that the user can switch to manual mode when necessary.

In addition, in the kitchen UV sterilizer 100 of the present invention, a pair of side covers 180a and 180b covering both sides so that both sides are not exposed when the floodlight panel 150 is coupled to the housing structure 110 can include A power supply port H1 may be provided in each of the side covers 180a and 180b to allow a plug for power supply to be inserted. Depending on the case, since the power outlet may be located on the left side or the right side, it is preferable that the power supply port H1 be formed on both side covers 180a and 180b.

Next, with reference to FIGS. 4 and 5 , an automatic mode (MODE 1) and a manual mode (MODE 2) of the kitchen ultraviolet sterilizer 100 according to the present invention will be described in detail. As mentioned above, when power off is selected in the three-phase slide switch that can select any one of power off, automatic mode, and manual mode, the kitchen ultraviolet sterilizer 100 of the present invention does not perform any function of sterilization or lighting. It is in a non-working state, that is, in a non-working state. When the automatic mode is selected in the 3-phase slide switch, the operation starts in the automatic mode (MODE 1), and when the user presses the push button (170) in the automatic mode (MODE 1), the manual mode (MODE 2) is entered immediately. Then, when the manual mode (MODE 2) ends, it immediately returns to the automatic mode (MODE 1). In addition, when the manual mode is selected in the three-phase slide switch, the operation starts in the manual mode (MODE 2) by pressing the push button 170.

Referring to FIG. 4 together with FIGS. 1 to 3, the automatic mode (MODE 1) is a mode that is automatically started according to power application, and the power application here converts the three-phase slide switch to the automatic mode (MODE 1). means action.

As a result of the user approaching the kitchen UV sterilizer 100 to apply power, the sensor unit 160 detects the human body (user) (ST1). For convenience, when a user approaches the kitchen UV sterilizer 100 to apply power, it is referred to as primary human body access.

Depending on the primary detection of the human body by the sensor unit 160, the control unit 142 turns on the lighting LED module 130 (ST2) so that the user can see the sink or the vicinity of the sink.

In this state in which the lighting LED module 130 is turned on, the sensor unit 160 continues to sense the human body, and transmits a signal resulting from the detection to the control unit 142 side. The control unit 142 side determines whether or not the human body detection has been resolved based on the detection result signal (ST3). Human body detection by the sensor unit 160 may be performed, for example, at a cycle of several seconds or a cycle of several tens of seconds. As a result of continuously detecting the human body in the sensor unit 160, when the detection result signal is received from the control unit 142 (branch NO in ST3), the LED module 130 for lighting continues to turn on (WLED ON). keep

Otherwise, as a result of the detection, when the primary human body detection by the sensor unit 160 is resolved (Yes branch in ST3), that is, when the sensor unit 160 no longer detects a human body, the control unit 142 is used for lighting. By turning off the LED module 130 and turning on the LED module 120 for sterilization, UVA sterilization of the sink is started (ST4, WLED OFF/UVA ON)). The sterilization duration is counted from this point, that is, the point when the sterilization LED module 120 is turned on. The duration of sterilization may be set through a timer in the control unit 142 to 1 hour (60 minutes) as shown in FIG. 4 .

With the lighting LED module 130 turned off and the sterilization LED module 120 turned on, the control unit 142 continuously checks whether the preset sterilization duration (60 minutes) has elapsed (ST5), and accordingly Accordingly, when the preset sterilization duration (60 minutes) has all elapsed, the control unit 142 turns off the sterilization LED module 120 depending on the end of the preset sterilization duration (60 minutes) (ST6, UVA OFF). Here, the fact that the control unit 142 depends on the end of the preset sterilization duration (60 minutes) means that the control unit 142 sterilizes the LED module ( 120) to generate a signal for controlling lights off. It is also used to have this meaning in the subsequent pause time.

Otherwise, in a state where the lighting LED module 130 is turned off and the sterilization LED module 120 is turned on, in a state where the preset sterilization duration (60 minutes) has not elapsed, the sensor unit 160 detects a human body. If there is (this is referred to as secondary human body detection for convenience) (example branch of ST7), depending on this secondary human body detection by the sensor unit 160, the control unit 142 turns on the LED module 130 for lighting and Turn off the LED module for sterilization (ST8) (ST8, WLED ON/UVA OFF).

When the lighting LED module 130 is turned on and the sterilization LED module 120 is turned off, and the preset sterilization duration (60 minutes) has not elapsed, the secondary human body detection by the sensor unit 160 is resolved. In this case (YES branch of ST9), the control unit 142 turns off the lighting LED module 130 and turns on the sterilization LED module 120 (ST10, WLED OFF/UVA ON).

When the LED module 130 for lighting is turned off and the LED module 120 for sterilization is turned on, when the preset sterilization duration (60 minutes) has all elapsed, that is, in the preset total sterilization duration (60 minutes), secondary When the remaining time after human body detection has elapsed (yes branch of ST11), the control unit 142 turns off the LED module for sterilization depending on the end of the preset sterilization duration (60 minutes) (ST13, UVA OFF).

On the other hand, when the lighting LED module 130 is turned off and the sterilization LED module 120 is turned on, the preset sterilization duration time (60 minutes) has not all elapsed, and the sensor unit 160 detects a human body. If there is (for convenience, this is referred to as tertiary human body detection) (NO branch of ST11 and YES branch of ST12), the control unit 142 turns on the LED module 130 for lighting and turns off the LED module 120 for sterilization (ST8). In this case, steps after ST8 are the same as in the previous case.

When the sterilization LED module 120 is turned off and the preset idle time has elapsed (Yes branch of ST14), it returns to step ST4 again and UVA sterilization is started. The preset idle time here is counted from the time when the LED module 120 for sterilization is turned off by the control unit 142 depending on the end of the preset sterilization duration, and the idle time can be set to about 8 hours. . That is, when several hours elapse after the previous sterilization, germs may occur and propagate in the sink again, so the sterilization operation is repeatedly performed. That is, when the preset idle time elapses, the LED module for sterilization is turned on depending on the end of the preset idle time (ST4). At this time, the LED module for lighting maintains an off state.

On the other hand, when the sensing unit 160 detects a human body (for convenience, this is referred to as 4th human body detection) in a state where the preset rest time has not elapsed (branch No of ST14) (Yes branch of ST15), the control unit ( 142) turns on the lighting LED module 130 depending on the fourth human body detection by the sensing unit 160 (ST16, WLED ON). At this time, the LED module 120 for sterilization maintains an off state. When the fourth human body detection in the sensing unit 160 is resolved (YES branch of ST17), the control unit 142 turns off the LED module for lighting (ST18, WLED OFF).

Next, referring to FIG. 5 together with FIGS. 1 to 3, the manual mode (MODE 2) is a mode started by the user pressing the push button 170, and a three-phase slide switch (not shown) is a manual mode ( This is the operation mode in the state of switching to MODE 2). Of course, there is also a conversion from automatic mode (MODE 1) to manual mode (MODE 2), but this will be described later, and only the operation in the state where the 3-phase slide switch is converted to manual mode (MODE 2) will be described here. do.

When the push button 170 is pressed (ST21, PUSH) in a state where the three-phase slide switch is switched to the manual mode (MOED 2), a predetermined delay time (eg, 60 seconds) depends on the user's push button operation. After the passage of time, the LED module 130 for lighting is turned off and the LED module 120 for sterilization is turned on (ST22, WLED OFF/UVA ON).

When the LED module 130 for lighting is turned off and the LED module 120 for sterilization is turned on, when the preset duration of sterilization (60 minutes) elapses (example branch of ST 23), the control unit 142 preliminarily Depending on the end of the set sterilization duration time, the LED module 120 for sterilization is turned off (ST24, UVA OFF). The sterilization duration (60 minutes) here is counted from when the sterilization LED module 120 is turned on, as in the automatic mode (MODE 1).

On the other hand, when the sensor unit 160 detects a human body in a state in which the lighting LED module 130 is turned off and the sterilization LED module 120 is turned on and the preset sterilization duration time has not elapsed (NO branch of ST23) and example branch of ST25), depending on the human body detection by the sensor unit 160, the control unit 142 turns on the LED module 130 for lighting and turns off the LED module 120 for sterilization (ST26, WLED ON/ UVA OFF).

Continuously, when the lighting LED module 130 is turned on and the sterilization LED module 120 is turned off and the preset sterilization duration (60 minutes) has not elapsed, the human body detection by the sensor unit 160 is resolved. In this case (YES branch of ST27), the control unit 142 turns off the lighting LED module 130 and turns on the sterilization LED module 120 (ST28, WLED OFF/UVA ON). On the other hand, when the detection is not resolved (NO branch of ST27), the lighting LED module 130 is turned on and the sterilization LED module 120 continues to maintain a turned off state (ST26).

When the LED module 130 for lighting is turned off and the LED module 120 for sterilization is turned on, when the preset sterilization duration (60 minutes) has elapsed, that is, when the remaining time has elapsed (example quarter of ST29) , The control unit 142 turns off the LED module 130 for sterilization depending on the end of the preset sterilization duration time (ST30, UVA OFF), thereby ending the manual mode (MODE 2) (ST32). If the manual mode (MODE 2) is started by the user pressing the push button 170 while the automatic mode (MODE 1) is being performed, after the end step (ST32), the process returns to step ST 14, which will be described below. It will be described with reference to FIGS. 4 and 5 together.

Finally, with reference to FIGS. 4 and 5 together with FIGS. 1 to 3, in the case of switching to the manual mode (MODE 2) initiated by the user pressing the push button during the automatic mode (MODE 1), this present invention The ultraviolet sterilizer for kitchen use of the present invention will be described.

Since descriptions of each of the automatic mode (MODE 1) and the manual mode (MODE 2) are substantially the same as those previously described with reference to FIGS. 4 and 5, respectively, duplicate descriptions will be omitted.

Secondary human body detection in automatic mode (MODE 1), tertiary human body It may be any one of detection and 4th human body detection, but if the push button 170 is pressed during the automatic mode (MODE 1), the manual mode (MODE 2) has priority, so the automatic mode (MODE 1) proceeds. When the user presses the push button 170, the user immediately switches to the manual mode (MODE 2), the manual mode (MODE 2) as shown in FIG. 5 proceeds, and after the end step (ST32) of the manual mode (MODE 2), the automatic mode (MODE 1) to step ST14. That is, after the end of the preset sterilization duration (60 minutes), the sterilization LED module 120 is turned off (step ST30), and the automatic mode (MODE 1) is ended, and then the preset rest time (8 hours) in this state. When this has elapsed (Yes branch of ST14), return to ST4 and start UVA sterilization.

In the above, the configuration and operation of the kitchen ultraviolet sterilizer 100 according to the embodiments of the present invention have been described, but it should be noted that the scope of the present invention is defined by the following claims.

100: UV sterilizer for kitchen of the present invention
110: housing structure
120: LED module for sterilization
130: LED module for lighting
140: printed circuit board
150: Floodlight
160: sensor unit
170: push button

Claims (5)

As a kitchen UV sterilizer located at the top of the sink,
a housing structure formed elongate and having an inner space;
a sterilization LED module located in the inner space of the housing structure and emitting UVA light downward to sterilize the sink - a plurality of UV LEDs emitting UVA light are mounted on the sterilization LED module;
an LED module for lighting located parallel to the LED module for sterilization in the inner space of the housing structure and for illuminating the sink, wherein a plurality of LEDs emitting white light are mounted on the LED module for lighting;
a printed circuit board located in the inner space of the housing structure and mounted with a control unit involved in the operation of the LED module for sterilization and the LED module for lighting;
a floodlight covering the lower portion of the housing structure to transmit UVA light or white light when the sterilization LED module is turned on or the lighting LED module is turned on;
A sensor unit having a first sensing unit and a second sensing unit for detecting a human body - the first sensing unit is an infrared human body sensor, the second sensing unit is an ultrasonic sensor, and the first sensing unit and the second sensing unit are When at least one of the sensing units detects a human body, a detection result signal is transmitted to the control unit;
an adhesive part located on the upper surface of the housing structure to be attached to the lower part of the sink upper cabinet located on the upper part of the sink;
A fixing and protecting structure coupled to a middle portion of the housing structure and accommodating the printed circuit board and the sensor unit therein, the fixing and protecting structure including an upper part, a front part, and a lower part, the upper part comprising: It is formed in a flat shape and coupled to the upper surface of the housing structure, the front part is coupled to the front surface of the housing structure, the lower part is coupled to the lower surface of the floodlight plate while being the lower part of the sensor unit, and the lower part is transparent. It is formed of a material, and a push button for changing the mode of the UV sterilizer for kitchen is located on the front part -; and
A pair of side covers covering both sides of the housing structure so that both sides of the housing structure are not exposed in a state in which the housing structure and the floodlight panel are coupled to each other on both sides of the housing structure - a power supply port is formed on each of the side covers; Characterized in that it comprises, kitchen ultraviolet sterilizer.
delete The method according to claim 1, wherein the kitchen UV sterilizer has an automatic mode that starts when power is applied to the kitchen UV sterilizer and a manual mode that starts when a user presses a push button,
The automatic mode,
Depending on the primary human body detection of the sensor unit according to the user's primary human body approaching the kitchen UV sterilizer for power application, the control unit turns on the lighting LED module,
When the primary human body detection by the sensor unit is resolved as the user moves away from the kitchen UV sterilizer while the lighting LED module is on, the control unit turns off the lighting LED module and the sterilization LED light up the module,
In a state where the lighting LED module is turned off and the sterilization LED module is turned on, when a preset sterilization duration time - the preset sterilization duration time is counted from when the sterilization LED module is turned on - has elapsed, the control The unit turns off the LED module for sterilization depending on the end of the preset sterilization duration,
In a state where the lighting LED module is turned off and the sterilization LED module is turned on and the preset sterilization duration time has not elapsed, according to the user's second human body approaching the kitchen ultraviolet sterilizer again, When there is a secondary human body detection by the sensor unit, depending on the secondary human body detection by the sensor unit, the control unit turns on the LED module for lighting and turns off the LED module for sterilization,
When the secondary human body detection by the sensor unit is resolved in a state in which the LED module for lighting is turned on and the LED module for sterilization is turned off and the preset sterilization duration time has not elapsed, the control unit is configured to Turning off the LED module and turning on the LED module for sterilization,
When the preset sterilization duration time elapses in a state in which the lighting LED module is turned off and the sterilization LED module is turned on, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time. let it,
A preset idle time in the state in which the sterilization LED module is turned off - The preset idle time is counted from the time when the sterilization LED module is turned off by the control unit depending on the end of the preset sterilization duration time - When this has elapsed, the control unit is in a mode for turning on the sterilization LED module depending on the end of the preset idle time.
The method according to claim 3, wherein the manual mode,
Depending on the user pressing the push button, the lighting LED module is turned off and the sterilization LED module is turned on after a predetermined delay time has elapsed,
In a state where the lighting LED module is turned off and the sterilization LED module is turned on, when a preset sterilization duration time - the preset sterilization duration time is counted from when the sterilization LED module is turned on - has elapsed, the control The unit turns off the LED module for sterilization depending on the end of the preset sterilization duration,
When the sensor unit detects a human body in a state in which the LED module for lighting is turned off and the LED module for sterilization is turned on and the preset sterilization duration time has not elapsed, depending on the detection of the human body by the sensor unit The control unit turns on the LED module for lighting and turns off the LED module for sterilization,
When the LED module for lighting is turned on and the LED module for sterilization is turned off and the detection of the human body by the sensor unit is resolved in a state where the preset sterilization duration time has not elapsed, the control unit controls the LED module for lighting. Turning off and turning on the LED module for sterilization,
When the preset sterilization duration time elapses in a state in which the lighting LED module is turned off and the sterilization LED module is turned on, the control unit turns off the sterilization LED module depending on the end of the preset sterilization duration time. Characterized in that the mode is terminated by doing, kitchen ultraviolet sterilizer.
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