CN113389475A - Primary and secondary sound absorption and insulation door structure for environmental working condition anechoic chamber - Google Patents
Primary and secondary sound absorption and insulation door structure for environmental working condition anechoic chamber Download PDFInfo
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- CN113389475A CN113389475A CN202110648877.1A CN202110648877A CN113389475A CN 113389475 A CN113389475 A CN 113389475A CN 202110648877 A CN202110648877 A CN 202110648877A CN 113389475 A CN113389475 A CN 113389475A
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/04—Frames for doors, windows, or the like to be fixed in openings
- E06B1/52—Frames specially adapted for doors
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
- E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
- E06B3/362—Double winged doors or windows
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
- E06B7/23—Plastic, sponge rubber, or like strips or tubes
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/24—Sealing arrangements on wings or parts co-operating with the wings without separate sealing members, e.g. with labyrinth
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention discloses a primary and secondary sound absorption and insulation door structure for an environmental working condition anechoic chamber, which comprises a wedge wall and a wedge door, wherein the wedge door comprises a door frame, a normally open door leaf and a normally closed door leaf, the door frame is fixed in a door opening of the wedge wall, the normally open door leaf wedge is installed on the inner side surface of the normally open door leaf, and the normally closed door leaf wedge is installed on the inner side surface of the normally closed door leaf; the normally open door leaf and the normally closed door leaf are connected with the door frame through a first hinge mechanism and a second hinge mechanism respectively; normally open door leaf wedge and rather than adjacent normally open door side wall wedge stagger each other in the direction of height for when normally open door leaf was opened, the convex part and the concave part of normally open door leaf wedge and normally open door side wall wedge are each other to inserting. The invention can reduce the occupation and the interference of the normally open door leaf and the normally closed door leaf on the indoor space of the silencing chamber when the normally open door leaf and the normally closed door leaf are opened under the condition of not damaging the sound field environment of the silencing chamber near the wedge door, thereby avoiding influencing the tool arrangement in the silencing chamber.
Description
Technical Field
The invention relates to a wedge door, in particular to a primary and secondary sound absorption and insulation door structure for an environmental working condition anechoic chamber.
Background
According to the standard requirements of GB/T7725 room air conditioner product service performance tests, the noise limit value test needs to be carried out in a anechoic chamber simulating a service condition environment with the dry bulb temperature of-25-55 ℃ and the wet bulb temperature of 40-95%, and the following problems can occur in the existing situation:
first, in order to ensure the integrity of the free field of the anechoic chamber and avoid the sound reflection on the surface of the sound-proof door from damaging the free field, a wedge door with the same sound absorption performance as the indoor environment is often configured. However, because the thickness of the door body is large, the existing wedge door is usually provided with a vertical rotating shaft independent of the door body as shown in fig. 1, and particularly in a double-door, in the opening and closing process of the wedge door, a large indoor space is occupied, the interference on a small anechoic chamber and a free field space is large, and even the arrangement of a tool is influenced; the independent vertical rotating shaft not only causes difficulty in installation and debugging of the door body, but also has a relatively complex mechanism and thick upright columns, so that sound reflection is formed, and the nearby sound field environment is damaged;
secondly, the other design is as shown in fig. 2, a door shaft is arranged on the outer side of a wedge door frame, and no matter the door is a primary-secondary door or a conventional-size double-opening wedge door, when a door leaf is opened, large spaces are required to be occupied on two sides of a door body, so that the door cannot be arranged in a corner position of a laboratory, and the overall layout of indoor space is influenced; due to the influence of the opening position of the wedge door, the contact position of the door body adopts the arc-shaped design, so that the wedge installed on the wedge door is irregular in shape, the design, processing and installation difficulty is increased, and the attractiveness of the wedge door is influenced; when opening the door leaf earlier and opening, because the sealed position of back opening leaf stretches out the size great, give the people and feel and open the friction and collision risk of the handle of in-process when getting into.
Thirdly, the wedge door is difficult to seal due to the large thickness of the door body, so that the wedge door only has sound absorption performance, the sound insulation performance is poor, even no sound insulation performance exists, two sound insulation doors which are opened in the same direction need to be reconfigured, and a sound gate or a large door needs to be made, so that the passing size is reduced, and the economy is poor;
fourthly, when the air conditioner carries out noise test under low-temperature and high-humidity working conditions, particularly below 0 ℃, the door is often frozen and difficult to open, the indoor temperature has to be increased again, the sealing position of the door body is waited to be melted, energy and time consumption is caused, and even the door body is damaged by violent opening;
fifthly, for a low-temperature environment, the heat insulation and preservation treatment of the door plays a great role in heat leakage and energy conservation of a room, a heat preservation layer is not additionally arranged on the wedge door body at present, the heat preservation performance of the sound insulation sealing material on the periphery of the door body is poor, so that the heat leakage is serious, the environment working condition is influenced, the working condition stabilization time is long, and the energy and time consumption is caused; secondly, condensation and even freezing are formed on the inner side of the outer sound-proof door, and the surface treatment layer of the door body is easily damaged when the door body is in a freeze-thaw environment for a long time, so that the service life of the door is influenced;
sixthly, the wedge hanging groove cannot be directly installed on the wall surface provided with the polyurethane heat-insulating layer, and the levelness and the verticality of the wedge hanging groove are leveled only by installing a gasket on an expansion screw of the fixed hanging frame, so that when the deviation of the levelness of the wall surface or the ceiling wall surface exceeds 10mm, the leveling is very complicated and difficult.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a primary and secondary sound absorption and insulation door structure for an environmental working condition anechoic chamber.
The technical scheme adopted by the invention is as follows:
the utility model provides an environmental condition anechoic chamber inhales sound insulation door structure with primary and secondary, includes wedge wall and wedge door, its characterized in that: the wedge door comprises a door frame, a normally open door leaf and a normally closed door leaf, the door frame is fixed in a door opening of the wedge wall, the normally open door leaf wedge is installed on the inner side surface of the normally open door leaf, and the normally closed door leaf wedge is installed on the inner side surface of the normally closed door leaf;
the near-axis edge of the normally open door leaf is connected with the first frame edge of the door frame through a first hinge mechanism, and the near-axis edge of the normally closed door leaf is connected with the second frame edge of the door frame through a second hinge mechanism;
and the normally open door leaf wedges and the normally open door side wall wedges adjacent to the normally open door leaf wedges are staggered in the height direction, so that the convex parts and the concave parts of the normally open door leaf wedges and the normally open door side wall wedges are mutually inserted when the normally open door leaf is opened. For example: in fig. 3, the convex part of the normally open door leaf wedge is inserted into the concave part of the normally open door side wall wedge, and the concave part of the normally open door leaf wedge is inserted into the convex part of the normally open door side wall wedge.
Therefore, the invention can reduce the occupation and the interference of the normally open door leaf and the normally closed door leaf to the indoor space of the silencing chamber when the normally open door leaf and the normally closed door leaf are opened under the condition of not destroying the sound field environment of the silencing chamber near the wedge door, thereby avoiding influencing the tool arrangement in the silencing chamber.
Preferably: referring to fig. 4, the door opening is located at a corner position of the anechoic chamber, namely: the wall surface where the wall surface wedges beside the normally-open door are not parallel to the wall surface of the door opening where the door opening is located;
the first hinge mechanism is a hinge directly installed on the inner side of the door frame, the second hinge mechanism is a frame hinge mechanism, the frame hinge mechanism comprises a door frame with one end vertically fixed on the inner side surface of the door frame and a door leaf frame with one end vertically fixed on the inner side surface of the normally closed door leaf, and the other ends of the door frame and the door leaf frame are connected through a hinge. Therefore, the wedge door can be arranged at the corner of the anechoic chamber, the interference of the normally-open door leaf and the normally-closed door leaf on the indoor space of the anechoic chamber when the normally-open door leaf and the normally-closed door leaf are opened is further reduced, and the influence on the overall layout of the indoor space of the anechoic chamber is further reduced.
Preferably: the wedge door is a primary-secondary door with a wider normally-open door leaf and a narrower normally-closed door leaf. Therefore, in the time of most of the samples to be tested, only the normally open door leaf needs to be opened, and only the normally closed door leaf needs to be opened when the samples to be tested cannot pass through the normally open door leaf, so that the opening frequency of the normally closed door leaf is low, and excessive interference on the installation of the movable tool in the anechoic chamber is avoided.
As a preferred embodiment of the present invention: as shown in fig. 4 to 7, the hollow inner cavities of the normally open door leaf and the normally closed door leaf are sequentially divided into a heat insulation sealing cavity, an air layer and a sound absorption sealing cavity from inside to outside by two sound insulation steel plates, the hollow inner cavity and the heat insulation sealing cavity of the door frame are filled with heat insulation materials, and the sound absorption sealing cavity is filled with sound absorption materials; the heat insulation material is preferably formed by foaming a polyurethane heat insulation material.
The first frame edge and the second frame edge of the door frame are both fixed with three-step parts, the paraxial edge of the normally open door leaf and the paraxial edge of the normally closed door leaf are respectively provided with a three-step structure corresponding to the two three-step parts, and the remote axial edge of the normally open door leaf and the remote axial edge of the normally closed door leaf are respectively provided with a corresponding three-step part and a corresponding three-step structure, wherein the three-step structure can be arranged on the remote axial edge of the normally open door leaf shown in fig. 4, and the three-step part can be arranged on the remote axial edge of the normally closed door leaf, but the three-step parts can be arranged on the remote axial edge of the normally closed door leaf, or vice versa; the first step and the second step of the three-step structure correspond to the heat-preservation sealed cavity, and the third step of the three-step structure corresponds to the air layer and the sound-absorption sealed cavity; a hollow inner cavity of the third-step part is filled with a sound absorption material;
each three-step piece all forms three-step seal structure between the three-step structure that corresponds, promptly: each step of the three-step member is fixed with a sealing element, and when the normally open door leaf and the normally closed door leaf are closed, each step of the three-step member compresses the sealing element thereon to the same step of the corresponding three-step structure (see fig. 4).
Therefore, when the normally-open door leaf and the normally-closed door leaf are closed, the wedge door can simultaneously have excellent sound absorption performance, good sound insulation performance and heat insulation performance, so that the problem that the existing wedge door cannot simultaneously have the three performances is solved under the conditions of a simpler production process and lower cost, and the wedge door can be stably used in a wide working condition environment anechoic chamber with the dry-bulb temperature of-25-55 ℃ and the wet-bulb temperature of 40-95% through tests.
Preferably: the sealing element comprises a primer, a flexible ethylene propylene diene monomer rubber strip and a magnetic strip which are sequentially laminated and adhered on the steps of the three-step piece. Thereby, utilize flexible ethylene propylene diene monomer strip to play the elastic sealing effect to utilize the magnetic force of magnetism to inhale the strip to adsorb on the step at the same level of three-order stair structure, make the packing that flexible ethylene propylene diene monomer strip is more laminated in the gap between sealing member and three-order stair structure, so that more sealed between sealing member and the three-order stair structure, further strengthened the sound insulation performance and the thermal insulation performance of wedge door.
Preferably: an aluminum heat transfer element is fixed in the three-step piece, a heat transfer groove of the aluminum heat transfer element is exposed out of the surface of the first step or the surface of the second step of the three-step piece, an electric tracing band is installed in the heat transfer groove, and an aluminum heat transfer cover is movably covered on the heat transfer groove; and the electric tracing band can be powered on when the indoor temperature of the anechoic chamber is lower than a preset temperature, and the electric tracing band can be powered off when the indoor temperature of the anechoic chamber is higher than the preset temperature. Therefore, when the indoor temperature of the anechoic chamber is lower than the preset temperature, the heat emitted by the electric tracing band can be transmitted to the heat-insulating material in the heat-insulating sealing cavity through the aluminum heat transmission piece, the aluminum heat transmission cover and the sealing piece, so that the temperature of the door frame can be automatically adjusted, and the wedge door is prevented from being frozen in a low-temperature environment and being difficult to open; when the indoor temperature of the anechoic chamber is higher than the preset temperature, the electric tracing band is not started, so that the energy is saved; moreover, the electric tracing band can be conveniently replaced by opening the aluminum heat transfer cover.
Wherein the preset temperature is preferably 5 ℃. The electric tracing band preferably comprises a conductive core band with PTC (positive temperature coefficient) characteristics and a covered insulating protective layer, can automatically adjust the output power and the heat mixing temperature along with the temperature change of a heat traced object, can be randomly shortened or lengthened in a certain range for use, and has the advantages of good insulating property, ageing resistance, low-voltage operation, safety, reliability, good flexibility, convenience in installation, use and maintenance. The electric tracing band can maintain proper surface temperature of the door frame through heat load calculation, namely, the electric tracing band is not frozen and the temperature is not higher than 55 ℃, so that safety and durability of the adhesive tape are ensured.
The movable cover of the heat transfer groove and the aluminum heat transfer cover is preferably mounted in a closing mode: the heat transfer groove is connected with the aluminum heat transfer cover in a matched mode through the clamping groove, the aluminum heat transfer cover is provided with a central through hole, a press riveting nut is arranged on the inner side face of the aluminum heat transfer cover in the central through hole through a press riveting technology, the press riveting nut is connected with a countersunk screw, the aluminum heat transfer cover is sealed through the countersunk screw, the aluminum heat transfer cover is ejected and detached through screwing the countersunk screw, and replacement of the electric tracing band is conveniently achieved.
As a preferred embodiment of the present invention: as shown in fig. 3 and 8, the normally open door leaf wedges are normally open door leaf upper wedges, normally open door leaf middle wedges and normally open door leaf lower wedges, the normally open door leaf upper wedges, the normally open door leaf middle wedges and the normally open door leaf lower wedges are all hung on a door leaf wedge hanging groove fixed on the inner side surface of the normally open door leaf through wedge hooks of the normally open door leaf upper wedges, the normally open door leaf middle wedges and the normally open door leaf lower wedges, and normally open door leaf wedge handles are installed on the normally open door leaf middle wedges and used for hanging the door leaf wedge hanging groove of the normally open door leaf into a C-shaped hanging groove, so that when the normally open door leaf is opened and closed by the normally open door leaf wedge handles, the normally open door leaf middle wedges can be kept stable in the pulling process, and the stability of the whole normally open door leaf and the convenience of door opening are kept;
the normally closed door leaf wedges are divided into normally closed door leaf upper wedges and normally closed door leaf lower wedges, the normally closed door leaf upper wedges and the normally closed door leaf lower wedges are hung on the door leaf wedge hanging grooves fixed on the inner side face of the normally closed door leaf through wedge hooks of the normally closed door leaf upper wedges and the normally closed door leaf lower wedges, and normally closed door leaf wedge handles are installed on the normally closed door leaf upper wedges.
Therefore, the normally open door leaf wedges and the normally closed door leaf wedges can be conveniently replaced, detached and installed on the normally open door leaf and the normally closed door leaf, and split transportation of the normally open door leaf wedges, the normally closed door leaf wedges and the wedge door can be achieved, so that transportation cost is reduced.
In addition, the door leaf wedge hanging grooves for hanging the normally open door leaf upper wedge, the normally closed door leaf upper wedge and the normally closed door leaf lower wedge preferably adopt L-shaped hanging grooves, and the door leaf wedge hanging grooves for hanging the normally open door leaf lower wedge preferably adopt I-shaped hanging grooves.
In addition, the outer side surfaces of the normally open door leaf and the normally closed door leaf are provided with door handles, so that the normally open door leaf and the normally closed door leaf can be opened and closed indoors and outdoors conveniently.
As a preferred embodiment of the present invention: as shown in fig. 4, 9 and 10, the wedge wall includes a solid wall, wall wedges and a heat insulation material layer, wherein a support mechanism is fixed on the inner side surface of the solid wall, the wall wedges are hung on the support mechanism, and the heat insulation material layer is arranged between the solid wall and the wall wedges and covers the inner side surface of the solid wall to ensure the heat insulation performance of the anechoic chamber.
Preferably: the bracket mechanism comprises an upper bracket mechanism and a lower bracket mechanism;
the upper bracket mechanism comprises an upper bracket and an upper hanging groove, the upper bracket is fixed on the inner side surface of the solid wall through expansion bolts, the upper bracket is provided with an upper sliding groove extending along the inner and outer directions, the upper hanging groove is locked on the upper sliding groove through a bolt-nut mechanism, and when the bolt-nut mechanism is loosened, the upper hanging groove can slide along the upper sliding groove;
the lower support mechanism comprises a lower support and a lower abutting piece, the lower support is fixed on the inner side surface of the solid wall through expansion bolts, the lower support is provided with a lower chute extending along the inner and outer directions, the lower abutting piece is locked on the lower chute through a bolt and nut mechanism, and the lower abutting piece can slide along the lower chute when the bolt and nut mechanism is loosened;
the upper row of wedge hooks of the wall wedges are hung on the upper hanging groove, and the lower row of wedge hooks of the wall wedges are propped against the lower propping piece.
Therefore, the upper support is positioned between the upper sliding groove and the solid wall, and the lower support is positioned between the lower sliding groove and the solid wall and can be used as a position for arranging the heat-insulating material layer, so that the heat-insulating material layer can completely cover the inner side surface of the solid wall, and the heat-insulating performance of the anechoic chamber is ensured;
moreover, the levelness and the verticality of the wall wedge can be adjusted by adjusting the locking position of the upper hanging groove in the upper sliding groove and adjusting the locking position of the lower abutting piece in the lower sliding groove, so that the mounting error of the wall wedge caused by the unevenness of the inner wall surface of the solid wall is compensated;
moreover, the bracket mechanism adopted by the invention has the advantages of convenience for batch production and simplicity and convenience for installation.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the normally open door leaf and the normally closed door leaf are connected with the door frame through the hinge mechanism, and the split-wedge hiding design that the split wedge of the normally open door leaf and the split wedge of the wall surface beside the normally open door leaf are staggered in the height direction is adopted, so that the occupation and the interference of the indoor space of the anechoic chamber when the normally open door leaf and the normally closed door leaf are opened can be reduced under the condition that the sound field environment of the anechoic chamber nearby the wedge door is not damaged, and the tool arrangement in the anechoic chamber is prevented from being influenced.
Secondly, the wedge door can be arranged at the corner of the anechoic chamber by adopting the hinge directly arranged on the inner side of the door frame as the first hinge mechanism and adopting the frame hinge mechanism as the second hinge mechanism, so that the interference of the normally-open door leaf and the normally-closed door leaf on the indoor space of the anechoic chamber when the normally-open door leaf and the normally-closed door leaf are opened is further reduced, and the influence on the overall layout of the indoor space of the anechoic chamber is further reduced.
Thirdly, the heat-insulating sealing cavity filled with heat-insulating materials, the air layer and the sound-absorbing sealing cavity filled with sound-absorbing materials are formed in the hollow inner cavities of the normally-open door leaf and the normally-closed door leaf, and the door frame, the normally-open door leaf and the normally-closed door leaf are sealed through the three-step sealing structure, so that the wedge door can have excellent sound absorption performance, good sound insulation performance and heat insulation performance simultaneously when the normally-open door leaf and the normally-closed door leaf are closed, the problem that the existing wedge door cannot have the three performances simultaneously is solved under the conditions of simpler production process and lower cost, and the wedge door can be stably used in the sound-absorbing chamber in the wide working condition environment with the dry-bulb temperature of-25-55 ℃ and the wet-bulb temperature of 40-95% through tests.
Fourthly, the bottom glue, the flexible ethylene propylene diene monomer rubber strip and the magnetic attraction strip are used as sealing elements, the flexible ethylene propylene diene monomer rubber strip is used for playing a role in elastic sealing, the magnetic force of the magnetic attraction strip is absorbed on the same step of the three-step structure, the flexible ethylene propylene diene monomer rubber strip is filled in a gap between the sealing elements and the three-step structure in a more fit mode, the sealing elements and the three-step structure are sealed, and the sound insulation performance and the heat insulation performance of the wedge door are further enhanced.
Fifthly, by arranging the electric tracing band, when the indoor temperature of the anechoic chamber is lower than the preset temperature, the heat emitted by the electric tracing band can be transmitted to the heat-insulating material in the heat-insulating sealing cavity through the aluminum heat transmission element, the aluminum heat transmission cover and the sealing element, so that the temperature of the door frame can be automatically adjusted, and the wedge door is prevented from being frozen in a low-temperature environment and being difficult to open; when the indoor temperature of the anechoic chamber is higher than the preset temperature, the electric tracing band is not started, so that the energy is saved; moreover, the electric tracing band can be conveniently replaced by opening the aluminum heat transfer cover.
Sixth, the door leaf wedge hanging groove can realize that the normally open door leaf wedge and the normally closed door leaf wedge can be conveniently replaced, detached and installed on the normally open door leaf and the normally closed door leaf, and can realize the split transportation of the normally open door leaf wedge, the normally closed door leaf wedge and the wedge door, so that the transportation cost is reduced.
Seventh, the invention adopts a support mechanism comprising an upper support mechanism and a lower support mechanism, wherein the upper support is positioned between the upper chute and the solid wall, and the lower support is positioned between the lower chute and the solid wall and can be used as a position for arranging a heat-insulating material layer, so that the heat-insulating material layer can completely cover the inner side surface of the solid wall, and the heat-insulating property of the anechoic chamber is ensured;
moreover, the levelness and the verticality of the wall wedge can be adjusted by adjusting the locking position of the upper hanging groove in the upper sliding groove and adjusting the locking position of the lower abutting piece in the lower sliding groove, so that the mounting error of the wall wedge caused by the unevenness of the inner wall surface of the solid wall is compensated;
moreover, the bracket mechanism adopted by the invention has the advantages of convenience for batch production and simplicity and convenience for installation.
Drawings
The invention is described in further detail below with reference to the following figures and specific examples:
FIG. 1 is a schematic structural diagram of a wedge door using a vertical rotating shaft in the prior art;
FIG. 2 is a schematic view of a prior art door hinge mounted to the outside of a frame;
FIG. 3 is a schematic elevation view of the primary and secondary sound-absorbing and insulating door structure for the anechoic chamber under environmental conditions according to the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a comparison of the door open and closed states of FIG. 4, wherein the dashed line structure represents the open state;
FIG. 6 is an enlarged view of the portion B of FIG. 4;
FIG. 7 is a schematic view showing an installation structure of an electric tracing band according to the present invention;
FIG. 8 is a schematic structural view of a normally open door leaf and a normally closed door leaf of the present invention when no wedge is hung;
FIG. 9 is a schematic structural view of an upper bracket mechanism according to the present invention;
fig. 10 is a schematic structural view of the lower bracket mechanism of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the inventive concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without inventive efforts by those skilled in the art will fall within the scope of the present invention without departing from the inventive concept of the present invention.
Example one
As shown in fig. 3 to 5, the invention discloses a primary and secondary sound absorption and insulation door structure for an environmental condition anechoic chamber, which comprises a wedge wall and a wedge door, and is characterized in that: the wedge door comprises a door frame 1, a normally open door leaf 2 and a normally closed door leaf 3, wherein the door frame 1 is fixed in a door opening 9a of the wedge wall, the normally open door leaf wedge 4 is installed on the inner side surface of the normally open door leaf 2, and the normally closed door leaf wedge 5 is installed on the inner side surface of the normally closed door leaf 3;
the near-axis edge of the normally open door leaf 2 is connected with the first frame edge of the door frame 1 through a first hinge mechanism 6, and the near-axis edge of the normally closed door leaf 3 is connected with the second frame edge of the door frame 1 through a second hinge mechanism 7;
and the normally open door leaf wedges 4 and the normally open door side wall surface wedges 8-1 adjacent to the normally open door leaf wedges 4 are staggered in the height direction, so that when the normally open door leaf 2 is opened, the convex parts and the concave parts of the normally open door leaf wedges 4 and the normally open door side wall surface wedges 8-1 are mutually inserted. For example: in fig. 3, the convex part 4a of the normally open door leaf wedge 4 is inserted into the concave part 8-1b of the normally open door side wall wedge 8-1, and the concave part 4b of the normally open door leaf wedge 4 is inserted into the convex part 8-1a of the normally open door side wall wedge 8-1.
Therefore, the invention can reduce the occupation and the interference of the indoor space of the silencing chamber when the normally open door leaf 2 and the normally closed door leaf 3 are opened under the condition that the sound field environment of the silencing chamber near the wedge door is not damaged, so as to avoid influencing the tool arrangement in the silencing chamber.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: referring to fig. 4, the door opening 9a is located at a corner position of the anechoic chamber, that is: the wall surface 9-2 where the wall surface wedges 8-1 beside the normally open door are not parallel to the door opening wall surface 9-1 where the door opening 9a is located;
the first hinge mechanism 6 is a hinge directly mounted on the inner side of the door frame 1, the second hinge mechanism 7 is a frame hinge mechanism, the frame hinge mechanism comprises a door frame 7-1 with one end vertically fixed on the inner side of the door frame 1 and a door leaf frame 7-2 with one end vertically fixed on the inner side of the normally closed door leaf 3, and the other ends of the door frame 7-1 and the door leaf frame 7-2 are connected through the hinge 7-3. Therefore, the wedge door can be arranged at the corner of the anechoic chamber, the interference of the normally-open door leaf 2 and the normally-closed door leaf 3 on the indoor space of the anechoic chamber when the door leaves are opened is further reduced, and the influence on the overall layout of the indoor space of the anechoic chamber is further reduced.
Preferably: the wedge door is a primary-secondary door with a wider normally-open door leaf 2 and a narrower normally-closed door leaf 3. Therefore, in the less most time of the sample to be tested, only the normally open door leaf 2 needs to be opened, and only the normally closed door leaf 3 needs to be opened when the sample to be tested cannot pass through only the normally open door leaf 2, so that the opening frequency of the normally closed door leaf 3 is low, and excessive interference cannot be caused to the installation of the movable tool in the anechoic chamber.
Example two
On the basis of the first embodiment, the second embodiment also adopts the following preferred embodiments:
as shown in fig. 4 to 7, the hollow inner cavities of the normally open door leaf 2 and the normally closed door leaf 3 are sequentially divided into a heat preservation sealing cavity a, an air layer b and a sound absorption sealing cavity c from inside to outside by two sound insulation steel plates, heat preservation materials are filled in the hollow inner cavity and the heat preservation sealing cavity a of the door frame 1, and sound absorption materials are filled in the sound absorption sealing cavity c; the heat insulation material is preferably formed by foaming a polyurethane heat insulation material.
The first frame edge and the second frame edge of the door frame 1 are both fixed with three-step members 10, the paraxial edge of the normally open door leaf 2 and the paraxial edge of the normally closed door leaf 3 are respectively provided with a three-step structure d corresponding to the two three-step members 10, the remote axial edge of the normally open door leaf 2 and the remote axial edge of the normally closed door leaf 3 are respectively provided with a corresponding three-step member 10 and a corresponding three-step structure d, wherein the three-step structure d can be arranged on the remote axial edge of the normally open door leaf 2 shown in fig. 4, the three-step member 10 can be arranged on the remote axial edge of the normally closed door leaf 3, but the reverse can also be realized; the first step d1 and the second step d2 of the three-step structure d correspond to the heat-preservation sealed cavity a, and the third step d3 of the three-step structure d corresponds to the air layer b and the sound-absorption sealed cavity c; a hollow inner cavity of the third-step part 10 is filled with a sound absorption material;
each three-step sealing structure is formed between each three-step piece 10 and the corresponding three-step structure d, namely: each step of the three-step member 10 is fixed with a sealing element 11, and when the normally-open door leaf 2 and the normally-closed door leaf 3 are closed, each step of the three-step member 10 compresses the sealing element 11 thereon to the same step of the corresponding three-step structure d (see fig. 4).
Therefore, when the normally-open door leaf 2 and the normally-closed door leaf 3 are closed, the wedge door can simultaneously have excellent sound absorption performance, good sound insulation performance and heat preservation performance, so that the problem that the existing wedge door cannot simultaneously have the three performances is solved under the conditions of a simpler production process and lower cost, and through tests, the wedge door can be stably used in a anechoic chamber in a wide working condition environment with the dry-bulb temperature of-25-55 ℃ and the wet-bulb temperature of 40-95%.
The above is the basic implementation manner of the second embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation manner:
preferably: the sealing element 11 comprises a primer 11-1, a flexible ethylene propylene diene monomer rubber strip 11-2 and a magnetic strip 11-3 which are sequentially laminated and adhered on the steps of the three-step piece 10. Therefore, the flexible ethylene propylene diene monomer rubber strip 11-2 plays a role in elastic sealing, the magnetic force of the magnetic suction strip 11-3 is adsorbed on the same step of the third-order step structure d, the flexible ethylene propylene diene monomer rubber strip 11-2 is filled in a gap between the sealing element 11 and the third-order step structure d in a more fit mode, the sealing element 11 and the third-order step structure d are sealed, and the sound insulation performance and the heat insulation performance of the wedge door are further enhanced.
Preferably: an aluminum heat transfer element 10-1 is fixed in the three-step part 10, a heat transfer groove 10-1a of the aluminum heat transfer element 10-1 is exposed on the surface of a first step or the surface of a second step of the three-step part 10, an electric tracing band 10-2 is installed in the heat transfer groove 10-1a, and an aluminum heat transfer cover 10-3 is movably covered on the heat transfer groove 10-1 a; and the electric heating cable 10-2 can be powered on when the indoor temperature of the anechoic chamber is lower than a preset temperature, and the electric heating cable 10-2 can be powered off when the indoor temperature of the anechoic chamber is higher than the preset temperature. Therefore, when the indoor temperature of the anechoic chamber is lower than the preset temperature, the heat emitted by the electric tracing band 10-2 can be conducted to the heat-insulating material in the heat-insulating sealing cavity a through the aluminum heat transfer element 10-1, the aluminum heat transfer cover 10-3 and the sealing element 11, so that the temperature of the door frame 1 can be automatically adjusted, and the wedge door is prevented from being frozen under a low-temperature environment and being difficult to open; when the indoor temperature of the anechoic chamber is higher than the preset temperature, the electric tracing band 10-2 is not started, so that the energy is saved; moreover, the replacement of the electric tracing band 10-2 can be conveniently realized by opening the aluminum heat transfer cover 10-3.
Wherein the preset temperature is preferably 5 ℃. The electric tracing band 10-2 is preferably composed of a conductive core band with PTC characteristic and a covered insulating protective layer, can automatically adjust output power and heat mixing temperature along with the temperature change of a heat tracing object, can be randomly shortened or lengthened in a certain range for use, and has good insulating property, ageing resistance, low-voltage operation, safety, reliability, good flexibility, convenience in installation, use and maintenance. The electric tracing band 10-2 can keep proper surface temperature of the door frame through heat load calculation, namely, the door frame is not frozen and the temperature is not higher than 55 ℃, and safety and durability of the adhesive tape are guaranteed.
The movable cover-closing installation mode of the heat transfer groove 10-1a and the aluminum heat transfer cover 10-3 is preferably as follows: the heat transfer groove 10-1a is connected with the aluminum heat transfer cover 10-3 in a matched mode through a clamping groove, the aluminum heat transfer cover 10-3 is provided with a central through hole, a riveting nut 10-4 is arranged on the inner side face of the aluminum heat transfer cover 10-3 in the central through hole through a riveting technology, the riveting nut 10-4 is connected with a countersunk screw 10-5, the central through hole of the aluminum heat transfer cover 10-3 is sealed through the countersunk screw 10-5, the countersunk screw 10-5 is screwed to eject out and disassemble the aluminum heat transfer cover 10-3, and replacement of the electric tracing band 10-2 is conveniently achieved.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferred embodiments:
as shown in fig. 3 and 8, the normally open door leaf wedges 4 are divided into normally open door leaf upper wedges 4-1, normally open door leaf middle wedges 4-2 and normally open door leaf lower wedges 4-3, the normally open door leaf upper wedge 4-1, the normally open door leaf middle wedge 4-2 and the normally open door leaf lower wedge 4-3 are hung on the door leaf wedge hanging groove 12 fixed on the inner side surface of the normally open door leaf 2 through the wedge hooks, and the normally open door leaf wedge 4-2 is provided with a normally open door leaf wedge handle 4-4, the door leaf wedge hanging groove 12 for hanging the wedge 4-2 in the normally open door leaf is a C-shaped hanging groove, when the normally open door leaf 2 is opened and closed by using the normally open door leaf wedge handle 4-4, the wedge 4-2 in the normally open door leaf can be kept stable in the pulling process, and the stability of the whole normally open door leaf 2 and the convenience of opening the door are kept;
the normally closed door leaf wedges 5 are divided into normally closed door leaf upper wedges 5-1 and normally closed door leaf lower wedges 5-2, the normally closed door leaf upper wedges 5-1 and the normally closed door leaf lower wedges 5-2 are hung on door leaf wedge hanging grooves 12 fixed on the inner side face of the normally closed door leaf 3 through wedge hooks of the normally closed door leaf upper wedges 5-1 and the normally closed door leaf lower wedges 5-2, and normally closed door leaf wedge handles 5-3 are installed on the normally closed door leaf upper wedges 5-1.
Thereby, normally open door leaf wedge 4 and normal close door leaf wedge 5 all can be convenient change dismantlement and installation on normally open door leaf 2 and normal close door leaf 3 to can realize the components of a whole that can function independently transportation of normally open door leaf wedge 4, normal close door leaf wedge 5, wedge door, with reduction cost of transportation.
In addition, the door leaf wedge hanging grooves 12 for hanging the normally open door leaf upper wedges 4-1, the normally closed door leaf upper wedges 5-1 and the normally closed door leaf lower wedges 5-2 are preferably L-shaped hanging grooves, and the door leaf wedge hanging grooves 12 for hanging the normally open door leaf lower wedges 4-3 are preferably I-shaped hanging grooves.
In addition, the outer side surfaces of the normally open door leaf 2 and the normally closed door leaf 3 are provided with door handles, so that the normally open door leaf 2 and the normally closed door leaf 3 can be opened and closed conveniently in an outdoor room.
Example four
On the basis of any one of the first to third embodiments, the fourth embodiment further adopts the following preferred embodiments:
as shown in fig. 4, 9 and 10, the wedge wall includes a solid wall 9, a wall wedge 8 and a heat insulating material layer 13, a support mechanism 14 is fixed on an inner side surface of the solid wall 9, the wall wedge 8 is hung on the support mechanism 14, and the heat insulating material layer 13 is arranged between the solid wall 9 and the wall wedge 8 and covers the inner side surface of the solid wall 9 to ensure the heat insulating performance of the anechoic chamber.
The above is the basic implementation of the fourth embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation:
preferably: the bracket mechanism 14 comprises an upper bracket mechanism 14A and a lower bracket mechanism 14B;
the upper bracket mechanism 14A comprises an upper bracket 14-1A and an upper hanging groove 14-2A, the upper bracket 14-1A is fixed on the inner side surface of the solid wall 9 through an expansion bolt 14-3, the upper bracket 14-1A is provided with an upper sliding groove 14-1A1 extending in the inner and outer directions, the upper hanging groove 14-2A is locked on the upper sliding groove 14-1A1 through a bolt-nut mechanism 14-4, and the upper hanging groove 14-2A can slide along the upper sliding groove 14-1A1 when the bolt-nut mechanism 14-4 is loosened;
the lower bracket mechanism 14B comprises a lower bracket 14-1B and a lower abutting piece 14-2B, the lower bracket 14-1B is fixed on the inner side surface of the solid wall 9 through an expansion bolt 14-3, the lower bracket 14-1B is provided with a lower sliding groove 14-1B1 extending in the inner and outer directions, the lower abutting piece 14-2B is locked on the lower sliding groove 14-1B1 through a bolt-nut mechanism 14-4, and the lower abutting piece 14-2B can slide along the lower sliding groove 14-1B1 when the bolt-nut mechanism 14-4 is loosened;
the upper row of wedge hooks of the wall wedges 8 are hung on the upper hanging groove 14-2A, and the lower row of wedge hooks of the wall wedges 8 are propped against the lower propping piece 14-2B.
Therefore, the upper support 14-1A is positioned between the upper sliding groove 14-1A1 and the solid wall 9, and the lower support 14-1B is positioned between the lower sliding groove 14-1B1 and the solid wall 9, and can be used as a position for arranging the heat insulation material layer 13, so that the heat insulation material layer 13 can completely cover the inner side surface of the solid wall 9, and the heat insulation performance of the anechoic chamber is ensured;
moreover, the levelness and perpendicularity of the wall wedges 8 can be adjusted by adjusting the locking position of the upper hanging groove 14-2A in the upper sliding groove 14-1A1 and adjusting the locking position of the lower abutting piece 14-2B in the lower sliding groove 14-1B1, so that the installation error of the wall wedges 8 caused by the unevenness of the inner side wall surface of the solid wall 9 is compensated;
moreover, the support mechanism 14 adopted by the invention has the advantages of convenience for batch production and simplicity and convenience for installation.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the invention as described above, according to the common technical knowledge and conventional means in the field.
Claims (9)
1. The utility model provides an environmental condition anechoic chamber inhales sound insulation door structure with primary and secondary, includes wedge wall and wedge door, its characterized in that: the wedge door comprises a door frame (1), a normally open door leaf (2) and a normally closed door leaf (3), wherein the door frame (1) is fixed in a door opening (9a) of the wedge wall, a normally open door leaf wedge (4) is installed on the inner side surface of the normally open door leaf (2), and a normally closed door leaf wedge (5) is installed on the inner side surface of the normally closed door leaf (3);
the near-axis edge of the normally open door leaf (2) is connected with the first frame edge of the door frame (1) through a first hinge mechanism (6), and the near-axis edge of the normally closed door leaf (3) is connected with the second frame edge of the door frame (1) through a second hinge mechanism (7);
and the normally open door leaf wedges (4) and the normally open door side wall wedges (8-1) adjacent to the normally open door leaf wedges are staggered in the height direction, so that when the normally open door leaf (2) is opened, the convex parts and the concave parts of the normally open door leaf wedges (4) and the normally open door side wall wedges (8-1) are mutually inserted.
2. The primary and secondary sound absorption and insulation door structure for the environmental working condition anechoic chamber according to claim 1, which is characterized in that: the door opening (9a) is positioned at the corner of the anechoic chamber, namely: the wall surface (9-2) where the wall surface wedges (8-1) beside the normally-open door are located is not parallel to the door opening wall surface (9-1) where the door opening (9a) is located;
the first hinge mechanism (6) is a hinge directly installed on the inner side of the door frame (1), the second hinge mechanism (7) is a frame hinge mechanism, the frame hinge mechanism comprises a door frame (7-1) with one end vertically fixed on the inner side of the door frame (1) and a door leaf frame (7-2) with one end vertically fixed on the inner side of the normally closed door leaf (3), and the other ends of the door frame (7-1) and the door leaf frame (7-2) are connected through the hinge (7-3).
3. The primary and secondary sound absorption and insulation door structure for the environmental working condition anechoic chamber according to claim 1, which is characterized in that: the wedge door is a primary-secondary door with a wider normally open door leaf (2) and a narrower normally closed door leaf (3).
4. The primary and secondary sound-absorbing and insulating door structure for the anechoic chamber under the environmental working conditions according to any one of claims 1 to 3, characterized in that: the hollow inner cavities of the normally open door leaf (2) and the normally closed door leaf (3) are sequentially divided into a heat-insulating sealed cavity (a), an air layer (b) and a sound-absorbing sealed cavity (c) from inside to outside through two sound-insulating steel plates, heat-insulating materials are filled in the hollow inner cavity of the door frame (1) and the heat-insulating sealed cavity (a), and sound-absorbing materials are filled in the sound-absorbing sealed cavity (c);
the first frame edge and the second frame edge of the door frame (1) are both fixed with three-step parts (10), the paraxial edge of the normally open door leaf (2) and the paraxial edge of the normally closed door leaf (3) are respectively provided with a three-step structure (d) corresponding to the two three-step parts (10), and the far axial edge of the normally open door leaf (2) and the far axial edge of the normally closed door leaf (3) are respectively provided with the corresponding three-step parts (10) and three-step structures (d); and, the first step (d1) and the second step (d2) of the three-step structure (d) correspond to the heat-insulating sealed cavity (a), and the third step (d3) of the three-step structure (d) corresponds to the air layer (b) and the sound-absorbing sealed cavity (c); a hollow inner cavity of the third-step piece (10) is filled with sound absorption materials;
each three-step piece (10) and the corresponding three-step structure (d) form a three-step sealing structure, namely: each step of the three-step piece (10) is fixed with a sealing element (11), and when the normally-open door leaf (2) and the normally-closed door leaf (3) are closed, each step of the three-step piece (10) compresses the sealing element (11) on the step to the step of the same step of the corresponding three-step structure (d).
5. The primary and secondary sound absorption and insulation door structure for the environmental working condition anechoic chamber according to claim 4, which is characterized in that: the sealing element (11) comprises a bottom glue (11-1), a flexible ethylene propylene diene monomer rubber strip (11-2) and a magnetic suction strip (11-3) which are sequentially laminated and adhered on the steps of the three-step piece (10).
6. The primary and secondary sound absorption and insulation door structure for the environmental working condition anechoic chamber according to claim 4, which is characterized in that: an aluminum heat transfer element (10-1) is fixed in the three-step piece (10), a heat transfer groove (10-1a) of the aluminum heat transfer element (10-1) is exposed on the surface of a first step or the surface of a second step of the three-step piece (10), an electric tracing band (10-2) is installed in the heat transfer groove (10-1a), and an aluminum heat transfer cover (10-3) is movably covered on the heat transfer groove (10-1 a); and the electric heating cable (10-2) can be powered on when the indoor temperature of the anechoic chamber is lower than a preset temperature, and the electric heating cable (10-2) can be powered off when the indoor temperature of the anechoic chamber is higher than the preset temperature.
7. The primary and secondary sound-absorbing and insulating door structure for the anechoic chamber under the environmental working conditions according to any one of claims 1 to 3, characterized in that: the normally open door leaf wedges (4) are divided into normally open door leaf upper wedges (4-1), normally open door leaf middle wedges (4-2) and normally open door leaf lower wedges (4-3), the normally open door leaf upper wedges (4-1), the normally open door leaf middle wedges (4-2) and the normally open door leaf lower wedges (4-3) are hung on door leaf wedge hanging grooves (12) fixed on the inner side face of the normally open door leaf (2) through wedge hooks of the normally open door leaf upper wedges (4-1), the normally open door leaf middle wedges (4-2) and the normally open door leaf lower wedges (4-3), normally open door leaf wedge handles (4-4) are installed on the normally open door leaf middle wedges (4-2), and door leaf wedge hanging grooves (12) for hanging the normally open door leaf middle wedges (4-2) are C-shaped hanging grooves;
the normally closed door leaf wedges (5) are divided into normally closed door leaf upper wedges (5-1) and normally closed door leaf lower wedges (5-2), the normally closed door leaf upper wedges (5-1) and the normally closed door leaf lower wedges (5-2) are hung on door leaf wedge hanging grooves (12) fixed on the inner side face of the normally closed door leaf (3) through wedge hooks of the normally closed door leaf upper wedges (5-1) and the normally closed door leaf lower wedges (5-2), and normally closed door leaf wedge handles (5-3) are installed on the normally closed door leaf upper wedges (5-1).
8. The primary and secondary sound-absorbing and insulating door structure for the anechoic chamber under the environmental working conditions according to any one of claims 1 to 3, characterized in that: wedge wall includes entity wall (9), wall wedge (8) and insulation material layer (13), the medial surface of entity wall (9) is fixed with gimbal mechanism (14), wall wedge (8) are hung and are established on gimbal mechanism (14), insulation material layer (13) set up between entity wall (9) and wall wedge (8) and cover the medial surface of entity wall (9).
9. The primary and secondary sound-absorbing and insulating door structure for the anechoic chamber under the environmental working conditions of claim 8, wherein: the bracket mechanism (14) comprises an upper bracket mechanism (14A) and a lower bracket mechanism (14B);
the upper bracket mechanism (14A) comprises an upper bracket (14-1A) and an upper hanging groove (14-2A), the upper bracket (14-1A) is fixed on the inner side surface of the solid wall (9) through an expansion bolt (14-3), the upper bracket (14-1A) is provided with an upper sliding groove (14-1A1) extending in the inner and outer directions, the upper hanging groove (14-2A) is locked on the upper sliding groove (14-1A1) through a bolt-nut mechanism (14-4), and when the bolt-nut mechanism (14-4) is loosened, the upper hanging groove (14-2A) can slide along the upper sliding groove (14-1A 1);
the lower bracket mechanism (14B) comprises a lower bracket (14-1B) and a lower abutting piece (14-2B), the lower bracket (14-1B) is fixed on the inner side surface of the solid wall (9) through an expansion bolt (14-3), the lower bracket (14-1B) is provided with a lower sliding groove (14-1B1) extending along the inner and outer directions, the lower abutting piece (14-2B) is locked on the lower sliding groove (14-1B1) through a bolt-nut mechanism (14-4), and when the bolt-nut mechanism (14-4) is loosened, the lower abutting piece (14-2B) can slide along the lower sliding groove (14-1B 1);
the upper row of wedge hooks of the wall surface wedges (8) are hung on the upper hanging groove (14-2A), and the lower row of wedge hooks of the wall surface wedges (8) are propped against the lower propping piece (14-2B).
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| CN213016080U (en) * | 2020-07-30 | 2021-04-20 | 上海泛德声学工程有限公司 | Inhale integrative door of sound insulation |
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| CN211370177U (en) * | 2019-12-17 | 2020-08-28 | 南京曼式声学技术有限公司 | Sound insulation door based on opposite-insertion type sealing treatment |
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