Hotel kitchen smoke exhaust fan and cooking bench linkage device

Abstract

The utility model discloses a linkage device for a smoke exhaust fan and a cooking bench of a hotel kitchen, which is characterized in that an air blower is arranged below the cooking bench in the kitchen, an oil smoke cover is arranged above the cooking bench, a smoke exhaust pipeline is connected above the oil smoke cover, and an oil smoke purifier and an exhaust fan are arranged at the tail end of the smoke exhaust pipeline; an intelligent electric meter is additionally arranged at a main power supply of the exhaust fan; a relay and a current sampling module are installed at the electric control connecting end of the air blower. The current sampling module collects the current value of the blower, the current relay acts, the normally-open outlet point is closed, the main contactor is electrified to pull in the main contact, and the oil smoke fan is started. The current sampling module collects the current value of the blower, at the moment, according to whether the current is zero or not, when the current is zero, the current relay coil is disconnected, the time relay delay coil acts, and when the preset time of the time relay is up, the time relay coil is disconnected; when the coil of the main contactor loses power, power supply of the exhaust fan is cut off, and the exhaust fan stops.

Description

Technical Field

[0001] The utility model belongs to the technical field of hotel kitchen smoke exhaust, and particularly relates to a linkage device between a hotel kitchen smoke exhaust fan and a cooking range. Background Technique

[0002] The kitchen fan linkage system is an intelligent kitchen exhaust control method, which can automatically control the switch of the oil fume hood according to the working state of the stove in the kitchen. Through the cooperation of sensors and controllers, the intelligent linkage between the oil fume hood and kitchen appliances such as cooktops, disinfection cabinets, and ovens is realized, improving the kitchen air quality and saving energy at the same time.

[0003] The existing operation mode of the kitchen smoke exhaust fan and the cooking range in hotels and guesthouses is manual control. From the start of the chef's work to closing, there are generally problems such as long ineffective operation time, high energy consumption, and high failure rate of the oil fume hood and the exhaust fan. Content of the Utility Model

[0004] The purpose of the utility model is to provide a linkage device between a hotel kitchen smoke exhaust fan and a cooking range to solve the problems of cotton quilt heat preservation and positioning function and facilitating medical staff's infusion in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] For the linkage device between a hotel kitchen smoke exhaust fan and a cooking range, a blower is installed under the cooking range, an oil fume hood is installed above the cooking range, a smoke exhaust pipe is connected above the oil fume hood, and an exhaust fan is installed at the tail end of the smoke exhaust pipe;

[0007] An intelligent electric meter is installed at the main power supply of the exhaust fan;

[0008] A relay and a current sampling module are installed at the electric control connection end of the blower.

[0009] Further, the relay is divided into a time relay and a current relay. The preset value of the time relay is 5 min to 20 min, and the preset value of the time relay is preferably 15 min. Extending the closing time of the exhaust fan can ensure that the oil fume and harmful gases in the kitchen are fully discharged, avoid them staying in the kitchen, ensure the cleanliness of the kitchen air, and can also reduce the overall heat in the kitchen. Through automatic timing setting, the exhaust fan can achieve the cleanliness of the kitchen air while reducing energy consumption and equipment wear, and improving the working life of the exhaust fan.

[0010] Further, a steam box is installed beside the cooking range. The steam box shares an oil fume hood with the cooking range. A temperature control switch is installed above the steam box, and the preset control value of the temperature control switch is 50°C. When the steam box is in use, when the temperature control switch detects that the temperature above the steam box rises to 50°C, the exhaust fan is started. When the temperature drops when the steam box is out of use, the temperature control switch controls the shutdown of the exhaust fan.

[0011] The technical solution of the present utility model has the following beneficial effects:

[0012] 1. When the oil fume hood, cooking range, and blower are started, the current sampling module collects the current value of the blower. When the current reaches the preset value, the current relay coil operates, and the exhaust fan starts instantaneously. When the current does not reach the preset value, no action is taken.

[0013] 2. When the oil fume hood, cooking range, and blower stop, the current sampling module collects the current value of the blower. At this time, according to whether the current is zero, when it is zero, the current relay coil operates and disconnects, and the extended coil of the time relay operates. When the preset time of the time relay is reached, the time relay coil operates and disconnects, that is, the power supply of the exhaust fan is disconnected, so that the exhaust fan stops. This simplifies the manual operation procedure, reduces the operation cost, avoids the long-term continuous operation of the exhaust fan, and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the control structure of the exhaust fan start circuit of the present utility model.

[0017] Figure 3 It is a schematic diagram of the control structure of the exhaust fan stop circuit of the present utility model.

[0018] Reference numerals: 10, cooking range; 12, blower; 13, current sampling module; 14, oil fume hood; 15, smoke exhaust pipe; 16, intelligent electricity meter; 17, steam box; 18, temperature control switch; 19, exhaust fan; 20, relay. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0020] Embodiment 1:

[0021] Refer to Figures 1 - 3 , for the linkage device between the hotel kitchen fume exhaust fan and the cooking range, a blower 12 is installed under the cooking range 10. The blower 12 introduces air into the furnace, enabling the fuel to receive sufficient oxygen supply, thereby ensuring a stronger flame and a higher furnace temperature. This can improve the combustion efficiency, save energy, and by adjusting the air flow rate and rotation speed of the blower 12, different cooking methods can be achieved, such as rapid heating, high-temperature cooking, or gentle boiling, improving the flexibility and effect of cooking.

[0022] Above the cooking range 10, an oil fume hood 14 is installed. Above the oil fume hood 14, an exhaust duct 15 is connected. At the end of the exhaust duct 15, an exhaust fan 19 is installed; the most important function of the exhaust fan 19 is to quickly and effectively discharge the oil fume, steam, and waste gas generated in the kitchen. The exhaust fan 19 generates suction or pressure to guide the oil fume and waste gas to the exhaust duct 15 and finally discharge them outdoors, thereby keeping the kitchen air fresh and hygienic. The exhaust fan can also adjust the temperature and humidity in the kitchen to a certain extent, relieve the stuffiness in the kitchen, create a more comfortable working environment, reduce the discomfort and interference caused by oil fume and odors, and improve the work efficiency of the chef.

[0023] In the above solution, when using the cooking range 10 for cooking, the blower 12 is started, and the air flow rate and rotation speed of the blower 12 are adjusted according to the usage needs for cooking operations. The oil fume generated by the cooking operations is adsorbed by the oil fume hood 14 into the exhaust duct 15, and then the exhaust fan 19 extracts the oil fume in the exhaust duct 15 out of the kitchen.

[0024] Refer to Figure 2 and Figure 3 , an intelligent electricity meter 16 is installed at the main power supply of the exhaust fan 19; the intelligent electricity meter 16 collects electricity consumption data (parameters such as voltage, current, power, and electricity consumption). At the electrical control connection end of the blower 12, a relay 20 and a current sampling module 13 are installed. The relay 20 is divided into a time relay and a current relay.

[0025] In the above solution, according to Figure 2As shown, the oil fume hood 14, the cooking range 10, and the blower 12 are started. The current sampling module 13 collects the current value of the blower 12. When the current reaches the preset value, the current relay coil operates, and the exhaust fan 19 starts instantaneously. When the current does not reach the preset value, no action is taken. According to Figure 3 As shown, the cooking range 10 and the blower 12 stop. The current sampling module 13 collects the current value of the blower 12. At this time, according to whether the current is zero, when it is zero, the current relay coil operates and disconnects, and the extended coil of the time relay operates. When the preset time of the time relay is reached, the time relay coil operates and disconnects, that is, the power supply of the exhaust fan 19 is disconnected, so that the exhaust fan 19 stops.

[0026] Furthermore, the preset value of the time relay is 5 min to 20 min. The overall control system of this equipment is connected to the control panel, and the function of setting time parameters can be unified through the control panel. Users can set the delay time, working time, and closing time of the time relay according to needs. In this way, the time relay can work according to the preset time plan and automatically cut off the circuit or perform other control operations when the set closing time arrives. Extending the closing of the exhaust fan 19 can ensure that the oil fume and harmful gases in the kitchen are fully discharged, prevent them from staying in the kitchen, ensure the cleanliness of the kitchen air, and also reduce the overall heat in the kitchen. Through automatic timing setting, the exhaust fan 19 can achieve the cleanliness of the kitchen air while reducing energy consumption and equipment wear, and improving the working life of the exhaust fan 19.

[0027] The preset value of the time relay is preferably 15 min. When the oil fume hood 14, the cooking range 10, and the blower 12 stop working, the continuous operation of the exhaust fan 19 for 15 min can effectively remove the oil fume and harmful gases in the kitchen, greatly improving the air quality in the kitchen.

[0028] Embodiment 2:

[0029] Refer to Figure 1 , an oven 17 is installed beside the cooking range 10. The oven 17 shares the oil fume hood 14 with the cooking range 10; a temperature control switch 18 is installed above the oven 17, and the preset control value of the temperature control switch 18 is 50 °C. The control circuit of the temperature control switch 18 is connected to the exhaust fan 19. When the oven 17 is in use, when the temperature control switch 18 detects that the temperature above the oven 17 rises to 50 °C, the exhaust fan 19 is started. When the oven 17 is out of use and the temperature drops, the temperature control switch 18 controls the exhaust fan 19 to shut down.

[0030] In summary, in the above embodiments: the manual operation procedure is simplified, the operation cost is reduced, and the energy can be saved by more than 30%. Avoiding the long-term continuous operation of the exhaust fan 19 can extend the service life of the equipment.

[0031] Embodiment 3:

[0032] Install current transformers, temperature sensors, etc. in the kitchen to detect changes in the kitchen environment. Use intelligent controllers such as PLCs or single-chip microcontrollers to receive data from the sensors and react according to preset programs. Set the linkage logic between various devices in the controller. For example, when the cooking stove starts working, the range hood starts automatically. Connect each device to the same network wirelessly or wired for easy data transmission and sending of control signals.

[0033] Startup control principle: The cooking stove 10 ignites → the blower 12 starts → the current transformer generates a signal current → the current relay operates → the contactor closes → the frequency converter starts. The steam box 17 uses steam → the temperature of the range hood rises → the temperature sensor closes (temperature control switch 18) → the intermediate relay operates → the contactor closes → the frequency converter starts.

[0034] Shutdown control principle: The cooking stove 10 goes out → the blower 12 stops → the signal of the current transformer disappears → the current relay releases → the time relay delays shutdown. The steam box 17 stops using steam → the temperature of the range hood drops → the temperature sensor disconnects (temperature control switch 18) → the time relay delays shutdown.

[0035] The specific implementation process of this embodiment is as follows:

[0036] During use, according to Figure 2 As shown, the cooking stove 10 and the blower 12 start. The current sampling module 13 collects the current value of the blower 12. When the current reaches the preset value, the coil of the current relay operates, and the exhaust fan 19 starts instantaneously. When the current does not reach the preset value, no action is taken.

[0037] According to Figure 3 As shown, the cooking stove 10 and the blower 12 stop. The current sampling module 13 collects the current value of the blower 12. At this time, depending on whether the current is zero, when it is zero, the coil of the current relay operates and disconnects. The extended coil of the time relay operates. When the preset time of the time relay is reached, the coil of the time relay operates and disconnects, that is, the power supply to the exhaust fan 19 is disconnected, so that the exhaust fan 19 stops.

[0038] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Within the essence and protection scope of the present invention, various modifications or equivalent replacements can be made to the present invention. Such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "front", "back", "left", "right", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only used for facilitating the description of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on the present utility model.

[0040] In the description of the present utility model, it is further noted that unless otherwise clearly specified and defined, the terms "set" and "connected" should be understood in a broad sense. For example, these terms can represent a fixed connection, a detachable connection or an integral connection between elements; they can also represent a mechanical connection or an electrical connection; they can also represent a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

Claims

1. A hotel kitchen smoke exhaust fan and stove linkage device, comprising a stove (10), characterized in that: A blower (12) is installed under the stove (10), a fume hood (14) is installed above the stove (10), a smoke exhaust pipe (15) is connected above the fume hood (14), and an exhaust fan (19) is installed at the rear end of the smoke exhaust pipe (15); A smart electric meter (16) is installed at the main power supply of the exhaust fan (19); The electric control connection end of the blower (12) is equipped with a relay (20) and a current sampling module (13).

2. The hotel kitchen smoke exhaust fan and stove linkage device according to claim 1, characterized in that: The relay (20) is divided into a time relay and a current relay.

3. The hotel kitchen smoke exhaust fan and stove linkage device according to claim 2 is characterized in that: The preset value of the time relay is 5min to 20min.

4. The hotel kitchen smoke exhaust fan and stove linkage device according to claim 3 is characterized in that: The preset value of the time relay is 15 minutes.

5. The hotel kitchen smoke exhaust fan and stove linkage device according to claim 1, characterized in that: A steam box (17) is installed on one side of the stove (10), and the steam box (17) and the stove (10) share a fume hood (14).

6. The hotel kitchen smoke exhaust fan and stove linkage device according to claim 5, characterized in that: A temperature control switch (18) is installed above the steam box (17), and the preset control value of the temperature control switch (18) is 50°C.

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