A safety protection system and control method in a steam cabinet

Abstract

A safety protection system in a steam cabinet comprises a steam cabinet body and an unlocking mechanism arranged in the steam cabinet body, the unlocking mechanism comprises a trigger, a sealing component, a transmission component and a control component, the trigger is arranged on the inner wall of the steam cabinet body, the sealing component is arranged on the inner wall of the steam cabinet body to seal the transmission component and the control component, the control component is connected with the cabinet door by electrical signals to control the cabinet door to be opened or closed. The present invention uses a trigger to trigger the control component, the trigger adopts mechanical transmission to trigger the connection with the external control component, which is reliable and durable, and at the same time uses a sealing component to seal the trigger and the transmission component to keep the trigger reliable.

Description

Technical Field

[0001] The present invention relates to the field of food production safety, and in particular to a safety protection system and a control method in a steaming cabinet. Background Art

[0002] With the continuous development of industrial kitchens, a large number of industrial kitchen equipment has been widely used. It is very suitable for the manufacture of a large number of products and is very convenient to use.

[0003] Steam cabinets usually require manual entry into the cabinet body for operation. Since the cabinet door of the steam cabinet is usually opened or closed electrically, sometimes a failure may occur and a person may be trapped in the cabinet body, resulting in a major safety accident.

[0004] Therefore, there is an urgent need to provide a safety protection system inside the steam cabinet on the market. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a safe, stable and reliable safety protection system and control method for a steamer.

[0006] Technical solution: A safety protection system in a steam cabinet, including a steam cabinet body and an unlocking mechanism arranged in the steam cabinet body, the unlocking mechanism includes a trigger, a sealing component, a transmission component and a control component, the trigger is arranged on the inner wall of the steam cabinet body, the sealing component is arranged on the inner wall of the steam cabinet body to seal the transmission component and the control component, the control component is connected to the cabinet door opening and closing mechanism by electrical signals, and controls the cabinet door to be opened or closed.

[0007] The sealing assembly comprises an external joint and a silicone sealing plug, and the silicone sealing plug is sealingly connected to the external joint.

[0008] The transmission component includes a connecting piece and an inner sleeve. The connecting piece is sealed in the steam cabinet body by the sealing component. One end of the connecting piece is connected to the inner sleeve. The triggering piece passes through the external joint, the connecting piece and the inner sleeve to trigger the connection with the control component.

[0009] The control component is arranged on the top of the steam cabinet body, the trigger member is connected with the control component through the outer joint and the inner sleeve, and also includes a handle, and the handle is fixedly connected with the trigger member.

[0010] The control component includes a travel switch and a controller. The trigger member is configured as a pull rod. One end of the pull rod is connected to the travel switch. The travel switch detects the displacement of the pull rod. The controller is electrically connected to the travel switch by signal, and the controller is electrically connected to the cabinet door drive component by signal.

[0011] The connecting piece is provided with threads, the external joint is threadedly connected to the connecting piece, and the silicone sealing plug is sealed between the connecting piece and the external joint.

[0012] The connector is configured as a hollow tube connector, a threaded pair is disposed on the outer side of the tube connector, the silicone seal plug is plugged at the end of the tube connector, and the trigger member penetrates through the silicone seal plug and penetrates into the tube connector.

[0013] The handle is covered with a silicone heat-insulating jacket.

[0014] The cabinet door opening and closing mechanism includes a locking mechanism and a door opening mechanism. The locking mechanism is connected to the cabinet door to lock the cabinet door. The door opening mechanism is connected to the cabinet door drive to drive the cabinet door to open or close. The controller is respectively connected to the locking mechanism and the door opening mechanism by electrical signals to respectively control the opening and closing of the locking mechanism and the door opening mechanism.

[0015] It also includes a steam supply mechanism and an exhaust fan. The steam supply mechanism is connected to the steam cabinet body to supply hot air to the steam cabinet body. The controller is connected to the steam supply mechanism by electrical signals to control the steam supply mechanism to close or open. The controller is connected to the exhaust fan by electrical signals to control the exhaust fan to close and open. The exhaust fan is connected to the steam cabinet body to exhaust the hot steam in the steam cabinet body.

[0016] A control method using the steam cabinet door safety control system comprises:

[0017] Step 1: After the trigger triggers the travel switch, the controller receives the electrical signal from the travel switch.

[0018] Step 2: The controller closes the air intake mechanism, stops the steam supply, starts the steam extraction fan, exhausts the hot steam in the steam cabinet, and controls the alarm to send out an alarm signal.

[0019] Step three, after the vacuuming is completed, start the cabinet door opening and closing mechanism, open the locking mechanism, release the cabinet door lock, and open the cabinet door with the cabinet door opening mechanism.

[0020] Beneficial effects: A safety protection system in a steamer cabinet, comprising a steamer cabinet body and an unlocking mechanism arranged in the steamer cabinet body, the unlocking mechanism comprising a trigger, a sealing component, a transmission component and a control component, the trigger is arranged on the inner wall of the steamer cabinet body, the sealing component is arranged on the inner wall of the steamer cabinet body to seal the transmission component and the control component, the control component is connected to the cabinet door by electrical signals to control the cabinet door to be opened or closed.

[0021] The present invention utilizes a trigger to trigger a control component, and the trigger is connected to an external control component through mechanical transmission, which is reliable and durable. A sealing component is used to seal the trigger and the transmission component to maintain the reliability of the trigger. Since the interior of the steamer is a high-temperature and high-humidity environment, especially when a large amount of hot steam rushes in during the steaming process, it is easy to damage the internal structure of the steamer. The sealing component can reliably isolate the transmission component, making the entire safety protection system safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 The present invention Figure 1 A partial enlarged view of .

[0024] Figure 3 It is a control circuit diagram of the present invention.

[0025] Figure 4 It is a control circuit diagram of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the cabinet door opening and closing mechanism of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the cabinet door opening and closing mechanism of the present invention from another perspective. Description of the drawings:

[0029] 1——steaming cabinet body, 101——cabinet door,

[0030] 2 - unlocking mechanism, 201 - handle, 202 - external joint, 203 - silicone sealing plug, 204 - connector, 205 - inner sleeve, 206 - travel switch, 207 - trigger

[0031] 303 - fixed shaft, 304 - shaft sleeve, 305 - door connection part, 306 - fixed sleeve, 307 - limit ring

[0032] 4 - locking mechanism, 401 - locking cylinder, 402 - locking piece, 403 - door lock connecting plate, 404 - locking position

[0033] 5——opening and closing mechanism, 501——opening and closing cylinder, 502——opening and closing driving cylinder shaft, 503——triangular linkage part, 504——pull rod, 505——fixed block.

[0034] 6——Exhaust fan

[0035] 7——Opening and closing fixed seat. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] It should be noted that the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, a safety protection system in a steam cabinet comprises a steam cabinet body 1 and an unlocking mechanism 2 arranged in the steam cabinet body 1, wherein the unlocking mechanism 2 comprises a trigger 207, a sealing component, a transmission component and a control component, wherein the trigger 207 is arranged on the inner wall of the steam cabinet body 1, the sealing component is arranged on the inner wall of the steam cabinet body 1 to seal the transmission component and the control component, and the control component is connected to the cabinet door by an electrical signal to control the cabinet door to be opened or closed.

[0039] The cabinet door opening and closing mechanism includes a locking mechanism 4 and a door opening mechanism 5. The locking mechanism 4 is connected to the cabinet door 101 to lock the cabinet door 101. The door opening mechanism 5 is drivingly connected to the cabinet door 101 to drive the cabinet door 101 to open or close. The controller is respectively connected to the locking mechanism 4 and the door opening mechanism 5 by electrical signals to respectively control the opening and closing of the locking mechanism 4 and the door opening mechanism 5.

[0040] The control component is connected to the cabinet door opening and closing mechanism through an electrical signal to control the opening of the cabinet door 101, thereby effectively improving the safety of the steam cabinet.

[0041] The locking mechanism 4 is disposed on the cabinet door 101 and is used to seal the cabinet door 101 and the steam cabinet body 1 .

[0042] The locking mechanism 4 uses the locking cylinder 401 and the locking member 402 to press the cabinet door 101 and the steam cabinet body 1. The cylinder shaft of the locking cylinder 401 pulls the locking member 402 to retract, driving the cabinet door 101 to move toward the steam cabinet body 1. A suitable formation can ensure that the two are pressed tightly.

[0043] The locked state means that since the locking mechanism is connected in a matching manner, after the cabinet door 101 is out of the locked state, the cabinet door 101 and the locking mechanism are out of the locked state and can be opened. The cabinet door 101 cooperates with the locking mechanism, and then the locking mechanism locks the cabinet door 101 with the steam cabinet body 1.

[0044] Furthermore, the cabinet door 101 can be connected in the form of auxiliary parts, for example, it can be achieved through the cooperation of the door locking connecting plate 403 and the locking member 402, which can effectively improve the convenience of installation of the mechanical structure and can also solve the problem of secondary matching. A sensor can also be set in the locking cylinder 401 to detect whether the cabinet door 101 is completely closed with the steam cabinet body 1 through force feedback, so as to avoid safety hazards when the cabinet door 101 is not dropped into place.

[0045] The auxiliary part is configured as a door lock connecting plate 403 set on the surface of the cabinet door 101, and the door lock connecting plate 403 is provided with a matching position corresponding to the locking member 402. When the cabinet door 101 falls, the door lock connecting plate 403 is matched and connected with the locking member 402, and the locking cylinder 401 drives the locking member 402 to tighten the door lock connecting plate 403, thereby pressing the cabinet door 101 and the steam cabinet body 1.

[0046] The door locking connecting plate 403 includes a plate body fixed to the cabinet door 101 and a locking part extending out of the cabinet door 101. The locking part is provided with a locking position 404. The locking position 404 is a recessed position with a large opening and a small interior. When the cabinet door 101 is in place, the locking position 404 is inserted into the locking member 402. The locking member 402 is driven by the locking cylinder 401. The front end of the locking member 402 is provided with a protrusion that is engaged with the locking position 404. The rear end of the locking member 402 is fixedly connected to the locking cylinder 401. The locking cylinder 401 drives the locking member 402 to tighten, thereby pressing the cabinet door 101 and the steam cabinet body 1 together through the locking part and the plate body.

[0047] The locking mechanism 4 is evenly distributed on one side of the steam cabinet body 1 and the cabinet door 101. The segmented compression can effectively improve the uniformity of the compression.

[0048] In this solution, the locking member 402 can also be directly fixed on the cabinet door 101. The locking member 402 is fixedly arranged on the cabinet door 101. When the cabinet door 101 falls, the locking member cooperates with the corresponding locking cylinder 401, and the locking cylinder 401 drives the locking member 402 to press the cabinet door 101 and the steam cabinet body 1.

[0049] The locking member 402 can be set as a rotating member, one end of which is connected to the cylinder shaft of the locking cylinder 401, and the other end of the rotating member is connected to the cabinet door 101. When moving, the rotating member is rotated into an "L" shape so that it is stuck on the surface of the cabinet door 101, and then the locking cylinder 401 drives and tightens to achieve airtightness. When opening, the locking cylinder 401 extends out, and the L part is rotated and retracted, and the cabinet door 101 can be opened.

[0050] The rotating part can also be provided with a rotating motor to realize controlled rotation without manual movement.

[0051] It includes a fixed shaft 303. When the door is opened, a connecting plate and a limiting ring 307 are used. One end of the connecting plate is fixedly connected to the cabinet door 101, and the other end is sleeved on the fixed shaft 303, and can rotate along the circumference of the fixed shaft 303. The limiting ring 307 is fixed to the fixed shaft 303 and is arranged at the upper and lower ends of the connecting plate to limit the vertical movement of the connecting member 302 along the axial direction.

[0052] The connecting plate includes a door connecting portion 305 and a fixing sleeve 306. The door connecting portion 305 is fixedly connected to the cabinet door 101 by bolts. The fixing sleeve 306 is sleeved on the fixing shaft 303 so that the door connecting portion 305 can rotate along the circumferential direction of the fixing shaft 303.

[0053] The limiting rings 307 are sleeved on both ends of the fixed shaft 303 and the fixed sleeve 306 , and are used to fix the fixed sleeve 306 so that it cannot move up and down along the axial direction of the fixed shaft 303 .

[0054] The opening and closing mechanism 5 includes a fixed block 505, a pull rod 504, a linkage part and an opening and closing cylinder 501. The opening and closing driving cylinder shaft 502 of the opening and closing cylinder 501 is fixedly connected to one end of the linkage part, and the other end of the linkage part is fixedly connected to one end of the pull rod 504. The other end of the pull rod 504 is fixedly connected to the fixed block 505. The fixed block 505 is fixedly connected to the cabinet door 101, and the third end of the linkage part is fixed.

[0055] The present application utilizes a three-point linkage. The opening and closing cylinder 501 drives one end of the linkage through the opening and closing drive cylinder shaft 502. The third section of the linkage is fixed, and the other end is fixedly connected to the cabinet door 101 through a pull rod 504. The movement of the opening and closing cylinder 501 utilizes the linkage to change the force and open the cabinet door 101.

[0056] The linkage member can also be set as a triangular linkage member 503, and its fixed end sleeve is set on the fixed shaft 303, the first end is axially connected to the pull rod 504, the second end is fixedly connected to the opening and closing cylinder shaft 502, and the third end is sleeved on the fixed shaft 303 and rotates along the axial direction of the fixed shaft 303. The third end is provided with a sleeve, which is sleeved on the fixed shaft 303.

[0057] The triangular linkage member 503 and the pull rod 504 are connected by a pin shaft, specifically, the upper part of the pin shaft is connected to one end of the triangular linkage member 503, and the lower part of the pin shaft is connected to the pull rod 504.

[0058] An opening and closing fixing seat 7 is disposed on the side of the steam cabinet body 1 , and the opening and closing cylinder 501 is fixed to the opening and closing fixing seat 7 .

[0059] When the cabinet door 101 needs to be opened, the locking cylinder 401 releases pressure and no longer tightens the door lock connecting plate 403. The door lock connecting plate 403 is disengaged from the locking member 402. At this time, the opening and closing cylinder 501 of the opening and closing mechanism 5 is driven, and the opening and closing cylinder shaft 502 retracts, driving one end of the linkage member, and the other end pulls the cabinet door 101 to rotate circumferentially along the fixed axis 303 through the pull rod 504, and the cabinet door 101 is opened through the door connecting plate 305.

[0060] It also includes a steam supply mechanism and an exhaust fan 6. The steam supply mechanism is connected to the steam cabinet body 1 to supply hot air to the steam cabinet body 1. The controller is connected to the steam supply mechanism by electrical signals to control the steam supply mechanism to be closed or opened. The controller is connected to the exhaust fan 6 by electrical signals to control the exhaust fan 6 to be closed and opened. The exhaust fan 6 is connected to the steam cabinet body 1 to exhaust the hot steam in the steam cabinet body 1.

[0061] During steam cabinet operation, the greatest danger comes from hot steam. When the steam cabinet is operating, a large amount of hot steam is introduced into the steam cabinet body 1. Once trapped, the trigger will first stop the entry of hot steam, and start the exhaust fan 6 to quickly exhaust the hot steam. Then the alarm component will be activated, and the cabinet door opening and closing mechanism will be activated at the same time to open the cabinet door. Even if the mechanical structure is damaged due to problems, the hot steam exhaust step will be started first to ensure the safety of the operator, and the operator can wait for rescue.

[0062] The sealing assembly includes an external joint 202 and a silicone sealing plug 203 , and the silicone sealing plug 203 is sealed and connected to the external joint 202 .

[0063] The transmission component includes a connecting piece 204, an inner sleeve 205, and a pull rod. The connecting piece 204 is sealed in the steam cabinet body by the sealing component. One end of the connecting piece 204 is fixedly connected to the inner sleeve 205. The triggering piece 206 passes through the external joint 202, the connecting piece 204, the inner sleeve 205 and is triggered and connected to the control component.

[0064] The transmission assembly is connected to the control assembly through a sealing assembly, which can solve the safety hazards during long-term use. Since the steam cabinet is in a high temperature and high humidity environment, conventional mechanical mechanisms are easily damaged due to long-term use, resulting in problems such as loose connections, especially conventional lock-type plug-in mechanisms, which are prone to corrosion and loose fitting. The transmission assembly of the present application is configured as an integrated structural pull rod that runs from the beginning to the control assembly, without generating any redundant connection structure, which can effectively avoid structural damage.

[0065] The control component is arranged on the top of the steam cabinet body 1, and the trigger member 206 is connected to the control component through the external joint 202 and the inner sleeve 205, and also includes a handle 201, the handle 201 is fixedly connected to the trigger member 206, and the handle 201 is covered with a silicone insulation jacket.

[0066] The top-down pull-down structural design can effectively improve safety. Even if corrosion and rust occur, the pull-down trigger structure design can still play a good triggering role, which is safe and stable.

[0067] The connecting piece 204 is provided with threads, and the external joint 202 is threadedly connected to the connecting piece 204 , so that the silicone sealing plug 203 is sealed between the connecting piece 204 and the external joint 202 .

[0068] The connector 204 is configured as a hollow tube connector, a threaded pair is disposed on the outer side of the tube connector, the silicone seal plug 203 is plugged at the end of the tube connector, and the trigger 206 penetrates through the silicone seal plug 203 and penetrates into the tube connector.

[0069] A double sealing structure of a silicone sealing plug 203 and a thread pair is adopted, and the sealing structure can be disassembled, which is convenient for regular maintenance and management and has a long service life.

[0070] The control component includes a travel switch and a controller, the trigger member 206 is configured as a pull rod, one end of the pull rod is connected to the travel switch, the travel switch detects the displacement of the pull rod, the controller is electrically connected to the travel switch, and the controller is electrically connected to the cabinet door drive component.

[0071] See also Figure 3 , Figure 4(Under normal working conditions), when the start button SB1 is pressed, the normally open contact of the steam valve YU1 coil is energized and closed, and the steam cabinet starts steaming by the steam inlet mechanism. At the same time, the steam control time relay starts timing. When the set steaming time is up, the normally open contact of the steam valve YU1 coil is triggered to disconnect, and the steam supply is stopped. The steam extraction fan coil KA3 is energized to start steam extraction. When the exhaust time is reached, the normally closed point of KT1 is de-energized and disconnected, the steam extraction fan stops running, the door locking cylinder YU2 is unlocked, and the normally closed point of the door opening cylinder YU3 solenoid valve is disconnected, and compressed air enters the cylinder to open the door.

[0072] (In an emergency), when the safety emergency travel switch SQ1 is manually actuated, the emergency interrupter KA4 is energized, and the normally open contact of the coil of the steam valve YU1 is disconnected, the steam supply is stopped, the extraction fan coil KA3 is energized to start the extraction, the normally open contact of KT1 is closed, the buzzer sounds, and at the same time, the normally open contact of KA2 is energized and disconnected, the door locking cylinder YU2 is unlocked, the normally closed point of the solenoid valve of the door opening cylinder YU3 is disconnected, and the compressed air enters the cylinder to open the door

[0073] A safety control method for a steam cabinet door of the present invention comprises:

[0074] After the trigger element triggers the travel switch, the controller receives the electrical signal from the travel switch and starts the safe door opening;

[0075] 1. Close the air inlet mechanism, close the steam inlet mechanism, stop the steam supply, start the steam extraction fan, and exhaust the hot steam in the steam cabinet.

[0076] 2. After the vacuuming is completed, start the cabinet door opening and closing mechanism, open the locking mechanism, release the cabinet door lock, and the cabinet door opening mechanism opens the cabinet door.

[0077] 3. At the same time, the alarm is triggered to send out an alarm signal.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A safety protection system in a steam cabinet, characterized in that: It comprises a steam cabinet body and an unlocking mechanism arranged in the steam cabinet body, the unlocking mechanism comprises a trigger, a sealing component, a transmission component and a control component, the trigger is arranged on the inner wall of the steam cabinet body, the sealing component is arranged on the inner wall of the steam cabinet body to seal the transmission component and the control component, the control component is connected with the cabinet door opening and closing mechanism by electrical signals, and controls the cabinet door to be opened or closed; The sealing assembly comprises an external joint and a silicone sealing plug, and the silicone sealing plug is sealed and connected to the external joint; The transmission assembly includes a connecting piece and an inner sleeve, wherein the connecting piece is sealed in the steam cabinet body by the sealing assembly, one end of the connecting piece is connected to the inner sleeve, and the triggering piece passes through the outer joint, the connecting piece and the inner sleeve to trigger the connection with the control assembly; The control assembly is arranged on the top of the steam cabinet body, the trigger member is connected to the control assembly through the outer joint and the inner sleeve, and further comprises a handle, and the handle is fixedly connected to the trigger member; The control component includes a travel switch and a controller. The trigger member is configured as a pull rod. One end of the pull rod is connected to the travel switch. The travel switch detects the displacement of the pull rod. The controller is electrically connected to the travel switch by signal, and the controller is electrically connected to the cabinet door drive component by signal.

2. A safety protection system in a steam cabinet according to claim 1, characterized in that: The connecting piece is provided with threads, the external joint is threadedly connected to the connecting piece, and the silicone sealing plug is sealed between the connecting piece and the external joint.

3. A safety protection system in a steam cabinet according to claim 2, characterized in that: The connector is configured as a hollow tube connector, a threaded pair is disposed on the outer side of the tube connector, the silicone seal plug is plugged at the end of the tube connector, and the trigger member penetrates through the silicone seal plug and penetrates into the tube connector.

4. The safety protection system in a steam cabinet according to claim 1, characterized in that: The handle is covered with a silicone heat-insulating jacket.

5. The safety protection system in a steam cabinet according to claim 1, characterized in that: The cabinet door opening and closing mechanism includes a locking mechanism and a door opening mechanism. The locking mechanism is connected to the cabinet door to lock the cabinet door. The door opening mechanism is connected to the cabinet door drive to drive the cabinet door to open or close. The controller is respectively connected to the locking mechanism and the door opening mechanism by electrical signals to respectively control the opening and closing of the locking mechanism and the door opening mechanism.

6. A safety protection system in a steam cabinet according to claim 1, characterized in that: It also includes a steam supply mechanism and an exhaust fan. The steam supply mechanism is connected to the steam cabinet body to supply hot air to the steam cabinet body. The controller is connected to the steam supply mechanism by electrical signals to control the steam supply mechanism to close or open. The controller is connected to the exhaust fan by electrical signals to control the exhaust fan to close and open. The exhaust fan is connected to the steam cabinet body to exhaust the hot steam in the steam cabinet body.

7. A control method for a safety protection system in a steam cabinet using any one of claims 1 to 6, characterized in that: include, Step 1: After the trigger triggers the travel switch, the controller receives the electrical signal from the travel switch. Step 2: The controller closes the air intake mechanism, stops the steam supply, starts the steam extraction fan, exhausts the hot steam in the steam cabinet, and controls the alarm to send out an alarm signal. Step three, after the vacuuming is completed, start the cabinet door opening and closing mechanism, open the locking mechanism, release the cabinet door lock, and open the cabinet door with the cabinet door opening mechanism.

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