Automatic releaser of emergency door
By installing an automatic releaser on the evacuation door, and using sensors and electromagnetic lock modules to automatically close the evacuation door during fire, the problem of frequent opening and closing of the evacuation door is solved, and the smoke barrier and life span is achieved during fire.
Patent Information
- Application Number
- CN202322168607.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-11
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2033-08-11
AI Technical Summary
The existing evacuation doors need to be opened and closed manually frequently in normal times, resulting in damage and the smoke will easily spread during fire, affecting the comfort and safety of life.
Design an automatic releaser including chains, sensor modules, electromagnetic lock modules and controller modules. The sensor module measures ambient temperature and smoke information, and the controller module controls the electromagnetic lock module to automatically close the evacuation door in the event of a fire.
The evacuation door remains open in normal times and is automatically closed in a fire, extending its service life and blocking the spread of smoke, improving safety and comfort.
Smart Images
Figure CN223190272U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a release device, in particular to an automatic release device for an evacuation door. Background Art
[0002] As is well known, evacuation doors are installed at the stairwell or corridor. They can only block smoke when a fire breaks out in the building, but sacrifice the living comfort of the people working or living there at other times. People need to push the door every day when passing through, especially when carrying things, which adds unnecessary trouble. Therefore, it is common in residential or office buildings that people tie the evacuation door with wire or block it with stones to keep it open. The consequence of this is that once a fire breaks out, toxic smoke will surely spread and block the evacuation passage. And a large number of evacuation doors or fire doors are damaged prematurely due to being pushed open and closed hundreds of times a day. The damage of evacuation doors is also one of the fire hazards stipulated in the national fire supervision and inspection. Replacing evacuation doors will incur relatively high costs. Content of the Utility Model
[0003] The purpose of the utility model is to provide an automatic release device for an evacuation door, which can keep the evacuation door open usually and automatically close the evacuation door when a fire occurs to block the spread of smoke.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] An automatic release device for an evacuation door, the automatic release device includes:
[0006] A chain, one end of the chain is connected to the free end of the evacuation door;
[0007] A sensor module for measuring the temperature and / or smoke information of the surrounding environment;
[0008] An electromagnetic lock module, including a traction electromagnetic lock and a housing enclosing the traction electromagnetic lock. The traction electromagnetic lock includes an armature. A perforation is provided on the housing corresponding to the end of the armature. The traction electromagnetic lock is arranged such that when the armature extends, the other end of the chain can pass through the perforation and overlap on the armature; when the armature retracts, the other end of the chain disengages from the armature;
[0009] A controller module, electrically connected to the sensor module and the electromagnetic lock module. The controller module is arranged to control the on / off state of the traction electromagnetic lock according to the temperature or smoke information measured by the sensor module.
[0010] Preferably, the sensor module includes a smoke sensor and / or a temperature sensor.
[0011] Preferably, it further includes a power supply module, and the power supply module is electrically connected to the controller module.
[0012] Preferably, the power supply module includes a storage battery and / or a 220V AC power supply.
[0013] Preferably, the armature is horizontally connected to a dialing hand, the housing has a limiting groove, and the dialing hand slides in the limiting groove.
[0014] Preferably, the traction electromagnetic lock further includes a body and a spring, the spring is sleeved on the armature, one end of which abuts against the body and the other end abuts against the dialing hand.
[0015] Preferably, the evacuation door includes a first door leaf and a second door leaf;
[0016] The first door leaf and the second door leaf respectively correspond to a chain and an electromagnetic lock module;
[0017] The controller module is directly electrically connected to one of the electromagnetic lock modules and is connected to the other electromagnetic lock module through a delay switch circuit.
[0018] The advantages of the present utility model are as follows:
[0019] The automatic releaser of the evacuation door provided by the present utility model can keep the evacuation door in an open state usually, and can automatically close the evacuation door in case of a fire to block the spread of smoke. The evacuation door is in an open state for a long time and does not need to be opened and closed many times every day, greatly prolonging the service life of the evacuation door. Description of the Drawings
[0020] Figure 1 is a schematic diagram of the main structure of an automatic releaser of an evacuation door of the present utility model;
[0021] Figure 2 is a schematic diagram of the structure in which a controller module and a sensor module of the present utility model are integrated in a module box;
[0022] Figure 3 is a schematic diagram of the structure of an electromagnet module and a chain of the present utility model, wherein the housing is in a semi-opened state and the armature and the chain are in a disengaged state;
[0023] Figure 4 is a schematic diagram of the structure of an electromagnet module and a chain of the present utility model, wherein the housing is in a semi-opened state and the armature and the chain are in a lapped state;
[0024] Figure 5 is a circuit structure block diagram of an automatic releaser of an evacuation door of the present utility model;
[0025] Figure 6This is a circuit structure diagram of another automatic releaser for an evacuation door of the present invention. DETAILED DESCRIPTION
[0026] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0027] See attached Figure 1 , Figure 1 An automatic releaser for an evacuation door is shown as an example. The evacuation door 1 is a single-opening door. The automatic releaser includes a chain 2, a sensor module 3, an electromagnetic lock module 4, and a controller module 5. One end of the chain 2 is connected to the free end of the evacuation door 1, that is, the chain 2 is connected to the opposite end of the rotating shaft of the evacuation door 1. The sensor module 3 is used to measure the temperature and / or smoke information of the surrounding environment. The sensor module 3 includes a smoke sensor and / or a smoke sensor. The controller module 5 and the sensor module 3 can be integrated in a module box (such as Figure 2 as shown) and is installed on the roof near the evacuation door 1.
[0028] See attached Figure 3 and Figure 4 The electromagnetic lock module 4 includes a traction electromagnetic lock 41 and a housing 42 that encloses the traction electromagnetic lock 41. The traction electromagnetic lock 41 can be a commercially available finished module. The traction electromagnetic lock 41 includes an armature 43, and a perforation 44 is provided on the housing 42 corresponding to the end of the armature 43. The traction electromagnetic lock 41 is configured so that when the armature 43 is extended, the other end of the chain 2 can pass through the perforation 44 and overlap the armature 43; when the armature 43 is retracted, the other end of the chain 2 is detached from the armature 43. In addition, the electromagnetic lock module 4 can also be set to a manual mode, that is, the armature 43 can also be laterally connected to a lever 45. The housing 42 has a limit groove 46, and the lever 45 slides in the limit groove 46. The traction electromagnetic lock 41 also includes a body 47 and a spring 48. The spring 48 is sleeved on the armature 43, with one end abutting the body 47 and the other end abutting the lever 45. The armature 43 can be manually extended or retracted by manually toggling the lever 45.
[0029] The controller module 5 is electrically connected to the sensor module 3 and the electromagnetic lock module 4. The controller module 5 is configured to control the switch state of the traction electromagnetic lock 41 according to the temperature or smoke information measured by the sensor module 3. Specifically, the controller module 5 is electrically connected to the traction electromagnetic lock 41 of the electromagnetic lock module 4. Usually, the traction electromagnetic lock 41 is in a power-off state, and the armature 43 is in an extended state under the restoring force of the spring 48. The chain 2 is lapped at the end of the armature 43. At this time, the evacuation door 1 is in an open state because it is pulled by the chain 2. In case of a fire, the controller module 5 knows the smoke or temperature near the evacuation door 1 through the sensor module 3 and can set the smoke or temperature threshold. After the threshold is reached, the traction electromagnetic lock 41 is powered on. After the traction electromagnetic lock 41 is powered on, the armature 43 is attracted and retracted by the body 47. At this time, the chain 2 is disengaged from the armature 43, and the evacuation door 1 automatically closes under the action of its own door closer or spring force.
[0030] Refer to the appendix Figure 5 For this, the automatic releaser of the evacuation door may further include a power supply module 6. The power supply module 6 is electrically connected to the controller module 5 and can supply power to the controller module 5. The power supply module 6 includes a storage battery and / or a 220V AC power supply.
[0031] Please refer to the appendix Figure 6 For this, the normally-closed evacuation door 1 may also be a double-leaf door, which includes a first door leaf and a second door leaf. The first door leaf and the second door leaf respectively correspond to a chain 2 and an electromagnetic lock module 4. The controller module 5 is directly electrically connected to one of the electromagnetic lock modules 4 and is connected to the other electromagnetic lock module 4 through a delay switch circuit 7. This design is for the double-leaf evacuation door 1 installed in a building. Since the code stipulates that it must be closed in the correct order, for this reason, each door leaf needs to correspond to a chain 2 and an electromagnetic lock module 4. For the door leaf that needs to be closed first, the corresponding electromagnetic lock module 4 is directly electrically connected to the controller module 5; for the door that needs to be closed later, a delay switch circuit 7 is further provided between the corresponding electromagnetic lock module 4 and the controller module 5, that is, the controller module 5 powers on the electromagnetic lock module 4 after a delay period (such as 10s, 15s), so as to achieve the purpose of closing the double-leaf evacuation door 1 in order. As for the time extended by the delay switch circuit 7, it can be freely set. It should be noted that the controller module 5 can be a commonly used control module in the market such as a single-chip microcomputer, a PLC, an FPGA, etc. The delay switch circuit 7 can also select a commonly used delay switch circuit module in the market, which will not be elaborated here.
[0032] In summary, the automatic releaser of the evacuation door provided by the present utility model controls the evacuation door in an open state at a low cost, which is convenient for personnel to pass through. After a fire generates smoke, the evacuation door closes automatically to prevent the spread of smoke. For a double-leaf evacuation door, this design uses a delay switch circuit to make one of the evacuation doors close later, ensuring that the double-leaf evacuation door closes tightly.
[0033] It should be noted that the above embodiments are illustrative of the present invention rather than restrictive of the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, the word "comprising" does not exclude the presence of elements or modules not listed in the claims. The word "a" or "an" before an element or module does not exclude the presence of a plurality of such elements or modules. The use of the words first and second does not denote any order and these words can be interpreted as names.
Claims
1. An automatic releaser for an evacuation door, characterized in that: The automatic release comprises: a chain, one end of which is connected to the free end of the evacuation door; A sensor module for measuring ambient temperature and / or smoke information; The electromagnetic lock module includes a traction electromagnetic lock and a housing enclosing the traction electromagnetic lock. The traction electromagnetic lock includes an armature. A through-hole is provided on the housing corresponding to an end of the armature. The traction electromagnetic lock is configured such that when the armature is extended, the other end of the lock chain can pass through the through-hole and overlap the armature; when the armature is retracted, the other end of the lock chain is detached from the armature. The controller module is electrically connected to the sensor module and the electromagnetic lock module, and the controller module is configured to control the switch state of the traction electromagnetic lock according to the temperature or smoke information measured by the sensor module.
2. The automatic releaser for an evacuation door according to claim 1, characterized in that: The sensor module includes a smoke sensor and / or a smog sensor.
3. The automatic releaser for an evacuation door according to claim 1, characterized in that: It also includes a power supply module, which is electrically connected to the controller module.
4. The automatic releaser for an evacuation door according to claim 3, characterized in that: The power supply module includes a battery and / or a 220V AC power supply.
5. The automatic releaser for an evacuation door according to claim 1, characterized in that: The armature is laterally connected to a shifting handle, the housing has a limiting groove, and the shifting handle slides in the limiting groove.
6. The automatic releaser for an evacuation door according to claim 5, characterized in that: The traction electromagnetic lock further comprises a body and a spring. The spring is sleeved on the armature, with one end of the spring abutting against the body and the other end abutting against the dial handle.
7. The automatic releaser for an evacuation door according to claim 1, characterized in that: The evacuation door comprises a first door leaf and a second door leaf; The first door leaf and the second door leaf correspond to a lock chain and an electromagnetic lock module respectively; The controller module is directly and electrically connected to one of the electromagnetic lock modules, and is connected to the other electromagnetic lock module via a time delay switch circuit.