Ultralow-temperature laboratory door with electromagnetic door lock
The design of an inflatable rubber strip controlled by an electromagnetic door lock and a Hall switch solves the problems of airtightness and locking reliability of laboratory doors in ultra-low temperature environments, ensuring the reliability and durability of the doors.
Patent Information
- Application Number
- CN202423044244.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-10
AI Technical Summary
In ultra-low temperature environments, the airtightness and locking reliability of laboratory doors are difficult to guarantee, affecting product performance and lifespan.
The design incorporates an electromagnetic door lock, a Hall effect switch, and an inflatable rubber strip. When the electromagnetic door lock is powered on, it attracts and locks the door, triggering inflation. The Hall effect switch controls the inflation device to inflate the rubber strip, ensuring a seal. When the power is off, the rubber strip is deflated, reducing wear.
It achieves reliable locking and excellent sealing of the door in ultra-low temperature environments, reduces rubber strip wear, and extends the door's service life.
Smart Images
Figure CN223577808U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of laboratory door, especially a super low temperature laboratory door with electromagnetic door lock. BACKGROUND
[0002] The super low temperature test belongs to one of environmental reliability tests. The ambient temperature in some places of product use scene can be very low, such as in cold storage, outdoor in cold zone area or in the process of product transportation, storage in container, cabin and passing through cold zone area, etc., and the ambient temperature around the product can reach below-30 DEG C or even lower. Such low temperature environment can affect the performance, function, quality, life of the product. If the product is in such low temperature environment for a long time, it needs to have certain low temperature resistance. Therefore, the low temperature test needs to be carried out on the product to understand the performance of the product in resisting low temperature, and if the requirement is not met, the product needs to be improved accordingly. The super low temperature test is to check the relevant functions and performance of the product before testing and take photos, then place the product in the low temperature laboratory, set the temperature and test duration of the low temperature laboratory, such as (-40 DEG C, 120h), and let the laboratory carry out room temperature and environmental treatment, so as to simulate the ambient temperature and duration of the product. The super low temperature test is divided into storage test in non-working state of the product and running test in working state of the product.
[0003] The super low temperature laboratory door has high requirements for air tightness, needs to ensure the reliability of the lock when the door is closed, and ensure the sealing when the door is closed. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a super low temperature laboratory door with electromagnetic door lock to solve the problems in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A super low temperature laboratory door with electromagnetic door lock, comprising: a door frame and a door body; the door body is hinged to the door frame; a layer of heat preservation material for heat insulation is arranged in the door body; the door frame is provided with an electromagnetic door lock; the door body is provided with an iron piece that can be attracted by the electromagnetic door lock or the shell of the door body can be attracted by the electromagnetic door lock; the door body is provided with a Hall switch, an inflatable rubber strip and an inflation device for inflating the inflatable rubber strip; the inflatable rubber strip is located between the door body and the door frame to realize sealing; the inflatable rubber strip is arranged around the door body; the Hall switch is aligned with the electromagnetic door lock; after the electromagnetic door lock is powered on to lock the door, the Hall switch triggers the inflation device to start and inflate the inflatable rubber strip.
[0007] As a further scheme of the utility model: the inflator is connected with an inflating pipeline and an air inlet pipeline; the inflator is connected with the inflatable rubber strip through the inflating pipeline; a one-way valve is arranged on the inflating pipeline; when the inflator works, the airflow enters the inflatable rubber strip filled by the inflating pipeline; the inflatable rubber strip is connected with a deflating pipeline; an electromagnetic deflating valve is arranged on the deflating pipeline.
[0008] As a further scheme of the utility model: after the electromagnetic door lock is powered on to lock the door, the Hall switch is triggered, and the electromagnetic deflating valve remains closed; after the electromagnetic door lock is powered off, the Hall switch is not triggered, and the electromagnetic deflating valve is opened.
[0009] As a further scheme of the utility model: after the Hall switch triggers to control the inflator to start, the inflator works for a preset time and then is closed.
[0010] As a further scheme of the utility model: the inflatable rubber strip is connected with an air pressure sensor for detecting air pressure; when the air pressure in the inflatable rubber strip reaches a preset air pressure, the inflator is closed.
[0011] As a further scheme of the utility model: the thermal insulation material layer is formed with a hollow air cavity.
[0012] As a further scheme of the utility model: the deflating pipeline and the air inlet pipeline are communicated to the hollow air cavity.
[0013] As a further scheme of the utility model: the door body is formed with a mounting groove; the inflatable rubber strip is mounted in the mounting groove; the door body is formed with an outer flange part and an inner flange part; the outer flange part and the inner flange part constitute the groove walls of the two sides of the mounting groove; the door frame comprises an outer frame part, an intermediate frame part and an inner frame part; the outer frame part and the intermediate frame part and the intermediate frame part and the inner frame part constitute a stepped structure; the intermediate frame part is aligned with the inner flange part; the outer flange part abuts against the outer frame part; the inner frame part abuts against the inner flange part; after the inflatable rubber strip is inflated, it abuts against the intermediate frame part, the outer frame part, the outer flange part and the inner flange part.
[0014] As a further scheme of the utility model: the number of the electromagnetic door locks is several; the electromagnetic door lock is arranged in a strip shape; the electromagnetic door lock is mounted in the outer frame part; the Hall switch is mounted in the outer flange part.
[0015] Compared with the prior art, the utility model has the beneficial effects that: the electromagnetic door lock is adsorbed and locked to ensure the closure of the door, meanwhile, the power-on of the electromagnetic door lock triggers the inflation of the inflatable rubber strip, and the inflatable rubber strip is used to improve the sealing performance; the power-off of the electromagnetic door lock controls the deflation of the inflatable rubber strip, reduces the abrasion of the inflatable rubber strip when the door is opened and closed, and improves the service life.
[0016] Other features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a schematic view of a super-low temperature laboratory door with an electromagnetic door lock;
[0018] Figure 2 is Figure 1 is a sectional view of a partial structure of the super-low temperature laboratory door with the electromagnetic door lock;
[0019] Figure 3 is Figure 1 is a schematic view of internal pipelines of the super-low temperature laboratory door with the electromagnetic door lock.
[0020] BRIEF DESCRIPTION OF DRAWINGS: super-low temperature laboratory door 100, door frame 10, electromagnetic door lock 11, outer frame part 101, intermediate frame part 102, inner frame part 103, door body 20, Hall switch 21, inflatable rubber strip 22, inflation device 23, inflation pipeline 24, one-way valve 241, air inlet pipeline 25, air outlet pipeline 26, electromagnetic air outlet valve 261, thermal insulation material layer 30, hollow air cavity 31, door outer flange part 201, door inner flange part 202. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] Please refer to Figures 1 to 3 In the embodiments of the present application, a super-low temperature laboratory door 100 with an electromagnetic door lock comprises a door frame 10 and a door body 20. The door body 20 is hinged to the door frame 10. A thermal insulation material layer 30 is arranged in the door body 20. The thermal insulation material layer 30 is used for heat insulation. The door frame 10 is provided with an electromagnetic door lock 11. As a specific embodiment, the door body 20 is provided with an iron piece that can be attracted by the electromagnetic door lock 11. As an optional embodiment, the outer shell of the door body 20 can be attracted by the electromagnetic door lock 11, i.e., the outer shell of the door body 20 is made of iron.
[0023] The door body 20 is provided with a Hall switch 21, an inflatable rubber strip 22 and an inflation device 23. The inflation device 23 inflates the inflatable rubber strip 22. The inflatable rubber strip 22 is located between the door body 20 and the door frame 10 to realize sealing. The inflatable rubber strip 22 is arranged around the door body 20. The Hall switch 21 is aligned with the electromagnetic door lock 11. After the electromagnetic door lock 11 is powered on to lock the door, the Hall switch 21 triggers to control the inflation device 23 to start, so as to inflate the inflatable rubber strip 22.
[0024] As a specific embodiment, the inflator 23 is connected with an inflating pipe 24 and an air inlet pipe 25. The inflator 23 is connected with the inflating rubber strip 22 through the inflating pipe 24. The inflating pipe 24 is provided with a one-way valve 241. When the inflator 23 works, the air flow is driven from the air inlet pipe 25 to the inflating rubber strip 22 filled by the inflating pipe 24. The inflating rubber strip 22 is connected with a deflating pipe 26. The deflating pipe 26 is provided with an electromagnetic deflating valve 261.
[0025] As a specific embodiment, when the Hall switch 21 is triggered after the electromagnetic door lock 11 is powered on to lock the door, the electromagnetic deflating valve 261 remains closed. When the electromagnetic door lock 11 is powered off, the Hall switch 21 is not triggered, and the electromagnetic deflating valve 261 is opened.
[0026] As a specific embodiment, after the Hall switch 21 is triggered to control the inflator 23 to start, the inflator 23 works for a preset time and then is closed.
[0027] As an optional embodiment, the inflating rubber strip 22 is connected with an air pressure sensor. The air pressure sensor is used to detect the air pressure. When the air pressure in the inflating rubber strip 22 reaches a preset air pressure, the inflator 23 is closed. Based on the air pressure value detected by the air pressure sensor, the inflator 23 is controlled to be closed.
[0028] As a specific embodiment, the heat insulation material layer 30 is formed with a hollow air cavity 31.
[0029] As a specific embodiment, the deflating pipe 26 and the air inlet pipe 25 are communicated to the hollow air cavity 31. As an optional embodiment, the deflating pipe 26 and the air inlet pipe 25 can also be simultaneously communicated to an outdoor environment, or simultaneously communicated to an indoor environment.
[0030] The communication mode of the hollow air cavity 31 can avoid the introduction of impurities by accessing the external environment. The setting of the hollow air cavity 31 can improve the heat insulation effect. The air can be extracted from the hollow air cavity 31, which can reduce the gas density in the hollow air cavity 31 and further slightly improve the heat insulation effect.
[0031] As a specific embodiment, the door body 20 is formed with a mounting groove. The inflatable rubber strip 22 is mounted in the mounting groove. The door body 20 is formed with a door outer flange part 201 and a door inner flange part 202. The door outer flange part 201 and the door inner flange part 202 constitute the groove walls of the two sides of the mounting groove. The door frame 10 comprises an outer frame part 101, an intermediate frame part 102 and an inner frame part 103. The outer frame part 101 and the intermediate frame part 102 and the intermediate frame part 102 and the inner frame part 103 constitute a stepped structure. The intermediate frame part 102 is aligned with the door inner flange part 202. The door outer flange part 201 abuts against the outer frame part 101. The inner frame part 103 abuts against the door inner flange part 202. After the inflatable rubber strip 22 is inflated, it abuts against the intermediate frame part 102, the outer frame part 101, the door outer flange part 201 and the door inner flange part 202.
[0032] As a specific embodiment, the number of the electromagnetic door locks 11 is several. The electromagnetic door locks 11 are arranged in a long strip shape. The electromagnetic door locks 11 are mounted in the outer frame part 101. The Hall switch 21 is mounted in the door outer flange part 201. The electromagnetic door lock 11 is an electromagnet, and the electromagnet is powered to realize the locking of the door.
[0033] When the door is closed and locked, the electromagnetic door lock 11 is started, the electromagnet is powered, and the electromagnetic door lock 11 is kept adsorbed and locked. The Hall switch 21 is triggered after detecting the magnetic field of the electromagnetic door lock 11, and then controls the inflation device 23 to start inflation, and controls the electromagnetic air release valve 261 to keep closed. The preset time of the inflation device 23 can be preset or the inflation device 23 can be controlled to stop inflation based on the air pressure.
[0034] When the door is opened, the electromagnetic door lock 11 is turned off, the electromagnet is powered off, and the magnetic force of the electromagnetic door lock 11 disappears and cannot be adsorbed and locked. The Hall switch 21 cannot detect the magnetic field of the electromagnetic door lock 11, and controls the electromagnetic air release valve to open.
[0035] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although the present application is described in the form of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments which can be understood by those skilled in the art.
Claims
1. A cryogenic laboratory door (100) with an electromagnetic lock, comprising: A door frame (10) and a door body (20); the door body (20) is hinged to the door frame (10); the door body (20) is provided with a heat-insulating material layer (30) for heat insulation; characterized in that the door frame (10) is provided with an electromagnetic door lock (11); the door body (20) is provided with an iron part that can be attracted by the electromagnetic door lock (11) or the outer shell of the door body (20) can be attracted by the electromagnetic door lock (11); the door body (20) is equipped with a Hall switch (21) and an inflatable rubber strip (2 2) An inflation device (23) for inflating the inflatable rubber strip (22); the inflatable rubber strip (22) is located between the door body (20) and the door frame (10) to achieve a seal; the inflatable rubber strip (22) is arranged around the door body (20); the Hall switch (21) is aligned with the electromagnetic door lock (11); after the electromagnetic door lock (11) is energized and the door is locked, the Hall switch (21) triggers the inflation device (23) to start and inflate the inflatable rubber strip (22).
2. The cryogenic laboratory door (100) with an electromagnetic lock according to claim 1, characterized in that, The inflation device (23) is connected to an inflation pipe (24) and an air inlet pipe (25); the inflation device (23) is connected to the inflation rubber strip (22) through the inflation pipe (24); a one-way valve (241) is provided on the inflation pipe (24); when the inflation device (23) is working, it drives the airflow from the air inlet pipe (25) into the inflation pipe (24) to inflate the inflation rubber strip (22); the inflation rubber strip (22) is connected to a deflation pipe (26); an electromagnetic deflation valve (261) is provided on the deflation pipe (26).
3. The cryogenic laboratory door (100) with an electromagnetic lock according to claim 2, characterized in that, When the electromagnetic door lock (11) is powered on and locked, the electromagnetic vent valve (261) remains closed when the Hall switch (21) is triggered; when the electromagnetic door lock (11) is powered off, the Hall switch (21) is not triggered and the electromagnetic vent valve (261) opens.
4. The cryogenic laboratory door (100) with an electromagnetic lock according to claim 3, characterized in that, After the Hall switch (21) triggers the start of the inflation device (23), the inflation device (23) shuts down after a preset working time.
5. A cryogenic laboratory door (100) with an electromagnetic lock according to claim 3, characterized in that, The inflatable rubber strip (22) is connected to a pressure sensor for detecting air pressure; when the air pressure in the inflatable rubber strip (22) reaches the preset air pressure, the inflation device (23) is turned off.
6. A cryogenic laboratory door (100) with an electromagnetic lock according to claim 3, characterized in that, The insulation material layer (30) forms a hollow air cavity (31).
7. A cryogenic laboratory door (100) with an electromagnetic lock according to claim 6, characterized in that, The venting pipe (26) and the inlet pipe (25) are connected to the hollow air cavity (31).
8. A cryogenic laboratory door (100) with an electromagnetic lock according to any one of claims 1 to 7, characterized in that, The door body (20) has a mounting groove; the inflatable rubber strip (22) is installed in the mounting groove; the door body (20) has an outer flange (201) and an inner flange (202); the outer flange (201) and the inner flange (202) form the groove walls on both sides of the mounting groove; the door frame (10) includes: an outer frame (101), a middle frame (102) and an inner frame (103); the space between the outer frame (101) and the middle frame (102) and the... A stepped structure is formed between the middle frame (102) and the inner frame (103); the middle frame (102) is aligned with the inner flange (202); the outer flange (201) abuts against the outer frame (101); the inner frame (103) abuts against the inner flange (202); after the inflatable rubber strip (22) is inflated, it abuts against the middle frame (102), the outer frame (101), the outer flange (201), and the inner flange (202).
9. A cryogenic laboratory door (100) with an electromagnetic lock according to claim 8, characterized in that, The number of electromagnetic door locks (11) is several; the electromagnetic door locks (11) are set in a long strip shape; the electromagnetic door locks (11) are installed inside the outer frame (101); the Hall switch (21) is installed inside the outer flange (201).