127 results about "Vacuum insulated panel" patented technology

A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure; an evacuation tube for evacuating the gap and which may extend at least partly into one of the substrates or be otherwise mounted / supported; and an evacuation tube seal at least partially surrounding the tube. A glass composition of the evacuation tube may contain a high amount of total iron (including oxides thereof) to improve the tube's tip seal. A tip seal, at an end and / or tip portion of the tube, may include a first side including a convex surface and / or a second side including a concave surface.

The utility model discloses an upper adsorber equipment, including conveying device and blanking device, conveying device includes conveyer belt and conveying frame, and conveyer belt rotatable is established on conveying frame, blanking device includes frame body, base, storage tube and horizontal push mechanism, and frame body is erected on conveying frame, and base sets up on frame body and is located conveying belt top, and storage tube sets up on base, and forms storage cavity in storage tube, and the lower extreme of storage tube is the discharge gate, and forms the push material space between discharge gate and base, and horizontal push mechanism sets up on base, and horizontal push mechanism includes the horizontal push piece of push material space transverse movement. The utility model discloses through setting up conveying device and blanking device, realizes the automatic adsorber on core material, is applicable to the automatic batch production of vacuum heat insulation board.

The application relates to the technical field of building materials, and particularly discloses a light self-insulation UHPC roof panel and a forming process thereof. The light self-insulation UHPC roof panel comprises a UHPC structural base plate, an insulation system, a double-seal splicing system and a mechanical connection system; the insulation system is arranged in the UHPC structural base plate, and the insulation system comprises an insulation cavity framework and a vacuum insulation panel (VIP); the vacuum insulation panel is filled and arranged in a cavity formed by the insulation cavity framework; the thickness of the vacuum insulation panel is 35-45 mm, and the heat conductivity coefficient is less than or equal to 0.008 W / (m*K). The application also provides a forming process of the light self-insulation UHPC roof panel. The light self-insulation UHPC roof panel provided by the application can realize the comprehensive effects of light weight, high strength, ultra-low heat conduction insulation and long-acting waterproofing, and is convenient to assemble, efficient to construct, has obvious construction period advantages and has wide engineering application prospects.

Thermally insulating enclosure for tank and tank device comprising such an enclosure The invention relates to an insulating enclosure (1) for tank (2) at least two complementary side wall parts (3), assembled together by butting their opposite lateral edges (31, 32) to form together a hollow cylindrical body, the various parts (3) mentioned above together constituting an insulating shell, with the lateral assembly edges (31, 32) of the side wall parts (3) extending along the longitudinal direction (DL) of the cylindrical body.Enclosure (1) characterized in that each side wall portion (3) has a composite structure with a main body made of a material and having at least one cavity or recessed area on its inner face (35), and in that at least one vacuum insulation panel, extending over a portion of the surface of the relevant side wall portion (3), is disposed in said at least one cavity, said insulation enclosure (1) also comprising at least one layer (7) of compressible material located at least between the main bodies (34) of the side wall portions (3) and the tank (2). [Figure to be published with the abbreviation: Fig. 2.

The utility model discloses a kind of composite outer formworks with high anti-bending load performance, it is related to building thermal insulation material technical field, including vacuum insulation board and the cladding thermal insulation slurry coated in the outside of vacuum insulation board, glass fiber mesh is equipped in the cladding thermal insulation slurry of vacuum insulation board side, steel wire mesh is equipped in the cladding thermal insulation slurry of vacuum insulation board other side, the glass fiber mesh and steel wire mesh are all with vacuum insulation board surface parallel arrangement is set, the utility model is set by glass fiber mesh and steel wire mesh in the cladding thermal insulation slurry of vacuum insulation board front and back two sides respectively, can effectively improve the impact resistance and the bending performance of this composite outer formwork, reduce the breakage rate of composite outer formwork in transportation and construction process, improve the service life of this composite outer formwork simultaneously.

The utility model discloses an anti-frosting structure of a refrigeration house in the technical field of refrigeration house equipment, which comprises an aluminum-zinc-plated steel plate, a metal framework is arranged on one side of the aluminum-zinc-plated steel plate, an aerogel felt is arranged on one side of the metal framework, a vacuum insulation plate is arranged on one side of the aerogel felt, a micro-channel heat pipe is arranged on one side of the vacuum insulation plate, and the micro-channel heat pipe is arranged on one side of the micro-channel heat pipe. A polyurethane foaming layer is arranged on one side of the vacuum heat insulation plate, a nanometer hydrophobic aluminum foil layer is arranged on one side of the polyurethane foaming layer, a carbon nano tube electric heating film is arranged on the surface of one side of the nanometer hydrophobic aluminum foil layer, and multiple sets of dew point sensors are installed on the surface of the carbon nano tube electric heating film in an embedded mode. Cold bridge heat can be continuously guided out through the arranged micro-channel heat pipe, the active defrosting frequency is reduced, the carbon nano tube electric heating film arranged in a gridding mode is matched with the dew point sensor, accurate local defrosting can be achieved, energy consumption is reduced, the nanometer hydrophobic aluminum foil layer can reduce the ice crystal adhesive force, the frosting amount is reduced, and the service life of the device is prolonged.

The invention discloses a manufacturing process of a vacuum insulated panel with a low vacuum degree enhanced in a structure. The manufacturing process comprises the following steps: carrying out compression pretreatment on a core body; laying surface-coated fiber cloth on the upper surface and the lower surface of the core body subjected to compression pretreatment, and implanting web wires according to preset density through a web wire machine to form a plurality of reinforced web wires penetrating through the thickness direction of the core body; a barrier layer is arranged, covers the upper surface and the lower surface of the core body and is fixedly connected with the belly wire exposed out of the core body, so that a reinforcing structure for resisting compression and stretching in the direction perpendicular to the surface of the core body is formed in the core body; vacuumizing the core body with the barrier layer until the core body is in a low-vacuum state with absolute pressure of 1000 Pa to 10000 Pa, and performing airtight sealing to obtain the vacuum insulated panel; wherein the barrier layer is configured to be a structural layer capable of realizing airtight packaging. Therefore, the core body has the capability of actively resisting pressure before being packaged, the'bulge 'failure caused by the collapse of the core body structure is fundamentally avoided, and the durability of the product is improved by an order of magnitude.

This invention relates to a space-grade vacuum insulation panel and its preparation method, belonging to the field of materials technology. It involves selecting specific components and proportions of various organosilanes and mixing them, then drying them at atmospheric pressure to obtain an aerogel core material. The specific surface area of ​​the fiber-reinforced aerogel composite core material is effectively controlled to reach 280–600 m². 2 A micro-nanoporous aerogel core material with a pore size ranging from 30 to 500 nm was obtained, and subsequently used to fabricate a long-life vacuum insulation panel. This atmospheric pressure drying method eliminates the need for chemical modification and low-surface-tension solvent replacement of the aerogel surface. The micro-nanoporous aerogel structure can be directly obtained through high-temperature heating, which facilitates the removal of gas from the aerogel pores during the vacuuming process of the vacuum insulation panel. This reduces the impact of residual gas on the lifespan of the vacuum insulation panel and solves the existing problem of incompatibility between thermal insulation performance and long lifespan in vacuum insulation panels.

The invention discloses a vacuum heat insulation anchoring system with a breathing micro-channel and a cap broken bridge structure and a construction method, and relates to the technical field of building energy conservation and outer wall heat preservation, in particular to the vacuum heat insulation anchoring system with the breathing micro-channel and the cap broken bridge structure and the construction method. The device comprises a vacuum heat insulation unit, an anchoring assembly and an edge broken bridge heat insulation strip. The vacuum heat insulation unit is a vacuum heat insulation plate, and packaging flange edges extending outwards are arranged on the periphery of the vacuum heat insulation unit. The anchoring assemblies are arranged at the abutted seams between the adjacent vacuum heat insulation units and used for pressing and fixing the packaging flange edges. The edge broken bridge heat insulation strip is arranged on the outer side of the packaging flange edge and the outer side of the anchoring assembly and covers the packaging flange edge and the anchoring assembly. The back face of the vacuum heat insulation unit is of a flat structure, and a micro-gap cavity ranging from 3 mm to 5 mm is formed between the vacuum heat insulation unit and the base layer wall by means of the thickness of the structural adhesive. The anchoring assemblies are arranged at the abutted seams of the vacuum heat insulation units, the outer sides of the anchoring assemblies are covered with the edge broken bridge heat insulation strips, meanwhile, the moisture removal micro-gap cavities are formed through the structural adhesive, it is guaranteed that the vacuum heat insulation plates are reliably fixed, meanwhile, an anchoring heat bridge is effectively blocked, and moisture removal of the wall is achieved; therefore, the overall heat insulation performance and the use reliability of the external wall insulation system are improved.

The present invention relates to a method for manufacturing a vacuum insulation panel using a synthetic resin having optical transparency, a vacuum insulation panel manufactured thereby, an add-on window using same, a method for manufacturing same, and an insulation shutter installation method. According to the present invention, the method for manufacturing a vacuum insulation panel using a synthetic resin having optical transparency comprises: an upper and lower plate stacking step of stacking an upper plate and a lower plate such that a plurality of spacers are provided between the upper plate and the lower plate to provide a space therebetween, the upper plate and the lower plate being made of a transparent synthetic resin; an edge bonding step of bonding the edges of the upper plate and the lower plate; and a vacuum layer forming step of forming a vacuum layer by discharging air through an exhaust hole formed in the upper plate or the lower plate and closing the exhaust hole. Accordingly, the upper plate and the lower plate made of a synthetic resin having high optical transparency, such as polycarbonate, have lower thermal conductivity than glass, thereby improving the insulation performance of the vacuum insulation panel, and, when the vacuum insulation panel is used as a door of a commercial refrigerator, condensation due to a temperature difference is prevented on the outer surface, thereby providing a use environment in which items stored in the refrigerator can be checked without opening the door.

The utility model discloses a film laminating mechanism for processing a vacuum insulated panel, which comprises a base, a reel is arranged at the upper end of one side of the base, a film laminating material is arranged outside the reel, a convex seat is arranged on the surface of the base, a film laminating compression roller is arranged on the inner side surface of the convex seat, a motor is fixed on the outer surface of the convex seat, and the motor is connected with the film laminating compression roller. A driving shaft of the motor is fixed to the end face of the film covering pressing roller, a plate body is placed on the inner side surface of the base, a supporting plate is fixedly connected to the upper surface of a protruding seat of the base, an air cylinder is fixedly connected to the upper surface of the supporting plate, and a cutting blade is fixedly connected to the end face of a pushing rod of the air cylinder. An electric push cylinder is fixed to the surface of the outer side of the base, a pushing strip is fixed to the end face of a pushing rod of the electric push cylinder, the positioning strip capable of being positioned and a positioning wheel structure are adopted, the positioning distance can be adjusted so that the device can be attached to and supported on the side face of a plate body, a motor drives a film covering pressing roller to conduct extrusion conveying, film covering can be conducted while conveying is conducted, efficiency is high, and the mechanism is simple. The cost is low.

The utility model discloses a hinge machine which comprises a bottom frame seat, a conveying mechanism and a hinge mechanism. The conveying mechanism is arranged on the bottom frame seat, the hinge mechanism comprises a hinge seat, a hinge mounting plate and a folding plate, the hinge seat is movably arranged on the bottom frame seat so as to be close to or far away from the conveying mechanism, the hinge mounting plate is arranged on the hinge seat in a lifting manner, and the folding plate is rotatably arranged on the hinge mounting plate. According to the flanging machine, due to the fact that the hinge base is movably arranged on the bottom frame base, the hinge installation plate is arranged on the hinge base in a lifting mode, and the folding plate is arranged on the hinge installation plate in a rotating mode, the movement track of the folding plate can be controlled in a multi-angle mode, the vacuum heat insulation plates with different widths and thicknesses can be flanged through the folding plate, and the flanging efficiency is high.

The utility model discloses a vacuum insulated panel, including honeycomb core, fibrofelt, getter and barrier membrane, honeycomb fibrofelt sandwich structure is formed by respectively setting the fibrofelt on the both sides of honeycomb core thickness direction, and the barrier membrane is set up around honeycomb fibrofelt sandwich structure and wraps it, and getter is set up between fibrofelt and barrier membrane. The vacuum insulated panel disclosed by the utility model is simple in structure, the vacuum insulated panel can be formed only by attaching the fiber felts to the two sides of the honeycomb core in the thickness direction, placing the getter on the surfaces of the fiber felts, wrapping the sandwich structure of the honeycomb fiber felts through the barrier film and vacuumizing, and the vacuum insulated panel is simple in preparation process, low in cost and high in practicability. The complexity of the preparation process of the vacuum insulation panel can be reduced; the density of the honeycomb core is far lower than that of the fiber felt, so that the weight reduction effect is achieved, and the weight reduction effect is achieved compared with the whole use of the fiber felt; the honeycomb core and the fiber felt are used as porous materials, so that the heat conductivity coefficient can be reduced, and excellent heat insulation performance is achieved.

A vacuum insulating panel may include: a first glass substrate; a second glass substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at a pressure less than atmospheric pressure; 5 and a seal (e.g., edge seal and / or pump-out tube seal) having at least a first seal layer. In order to form a layer of the seal, a glass may be provided such as in a paste which may also include filler, binder and / or solvent, or in a pressed preform which may also include filler. The glass (e.g., the glass, such as glass powder, present in a paste before firing) for 10 use in forming the seal layer may include tellurium oxide and may be designed to have little or no aluminum oxide and / or little or no zinc oxide.

The utility model relates to a redundant angle pinching device for automatic production equipment of a vacuum insulated panel, which comprises a rack, a transmission mechanism, a front angle pinching mechanism and a rear angle pinching mechanism which have the same structure, and each of the front angle pinching mechanism and the rear angle pinching mechanism comprises a positioning piece capable of moving up and down and left and right to be pressed on a redundant short edge, and a bulldozing piece capable of moving up and down and left and right to be arranged at the upper end of the outer side of the positioning piece, the pressing piece is arranged on the outer side of the bulldozing piece in a vertically movable mode, and the end face, facing the outer side, of the positioning piece is in an inclined plane shape; after the positioning piece moves in place from the redundant short edge to the joint of the redundant long edge, the bulldozing piece is pushed inwards in place along the upper surface of the positioning piece and pushes the redundant long edge to move inwards along the inclined surface of the positioning piece to form an inclined edge shape inclined inwards; and after the positioning piece moves backwards in place, the outer side surface of the bulldozing piece and the end part of the redundant short edge of the vacuum insulated panel are arranged at an interval. The utility model has the advantages of simple structure, simple operation flow and easy realization, and can automatically and simply complete the production process of the redundant edge pinching angle of the vacuum insulated panel.

The present application belongs to the technical field of vacuum insulation panels, and particularly relates to an air suction device, a preparation method of the air suction device, a vacuum insulation panel comprising the air suction device, and a heat insulation device. The air suction device comprises a pipe body, a sealing part and an air suction material. At least two slits are arranged on the pipe body along the axial direction of the pipe body. The sealing part is arranged at the slits at both ends of the pipe body to define a sealed space in the pipe body. The air suction material is arranged in the sealed space. The sealing part comprises a sealing material. The particle size of the sealing material is larger than the width of the slits. The sealing material is solidified to form the sealing part after flowing and filling the slits in a heated state. The above structure can realize one-time forming and sealing of the air suction device, and further realize efficient and continuous production of the air suction device, thereby improving the production efficiency of the air suction device.

This invention relates to a production line for a composite core material of an energy storage vacuum insulation panel, comprising a pulping tank, a pulp mixing tank, a wet forming machine, a conveyor belt, and a paper press. The wet forming machine includes a tank, a universal forming mesh, and a vacuum dewatering box. The paper press is connected to the downstream end of the wet forming machine via the conveyor belt, which is equipped with a drying device. The pulp mixing tank is connected to a phase change microcapsule mixing tank via a transfer pipe, and the phase change microcapsule mixing tank is connected to the wet forming machine via a second feeding pipe. The wet forming machine is equipped with a linear module, a lifting cylinder, and a spreading hopper. A dedicated forming mesh is provided at the bottom of the spreading hopper. This invention allows phase change microcapsules to be mixed separately and placed individually at specific locations on the wet forming machine, preventing breakage of the microcapsules. Furthermore, the addition position of the microcapsules can be adjusted as needed to ensure that the phase change microcapsule layer in the core material is at a preset position.

The application discloses a metal vacuum heat insulation plate packaging method, which comprises the following steps: step one, placing a plate body arranged under the atmosphere into a vacuum chamber; wherein the plate body comprises an upper barrier piece, a lower barrier piece, a core material, an adsorbent and heat sealing glue; step two, performing vacuumizing on the plate body in the vacuum chamber; step three, performing pressure heating on the upper barrier piece and / or the lower barrier piece in the vacuum chamber, so that the heat sealing glue between the upper barrier piece and the lower barrier piece is melted, and the upper barrier piece and the lower barrier piece are glued together; step four, breaking the vacuum, and taking out the vacuum heat insulation plate prepared in the vacuum chamber; and step five, welding and packaging the edge of the vacuum heat insulation plate under the atmospheric pressure. The application further discloses a metal vacuum heat insulation plate. The application performs air extraction in the vacuum chamber, has high air extraction efficiency, then performs pre-sealing, and finally performs welding and packaging under the atmospheric pressure, so that an air extraction hole is not needed to be arranged, the sealing effect is good, the efficiency is higher, and air leakage is not easy.

The application provides a heat-insulating noise-reducing electromagnetic shielding integrated honeycomb composite board, which comprises, from top to bottom, a micro-glass fiber grid reinforced phenolic resin perforated plate, an embedded film honeycomb core and a damping plate. The micro-glass fiber grid reinforced phenolic resin perforated plate is a composite structure with a reinforcing phase of a micro-glass fiber grid cloth and a matrix phase of a phenolic resin, and a plurality of groups of perforations are formed in the composite structure. The embedded film honeycomb core is provided with a plurality of groups of honeycomb cells and embedded films, the center of each group of honeycomb cells is aligned with the center of the perforation, and the embedded film is arranged on the center line of the thickness of the honeycomb cell, 2 mm above and below. The damping plate is a composite structure formed by stacking a vacuum heat-insulating plate and a damping layer. The structure design can effectively improve the heat-insulating noise-reducing function and electromagnetic shielding capacity of the material, so that the material can be used as a heat-insulating noise-reducing electromagnetic shielding material in the fields of building and transportation.

A vacuum insulating panel may include: a first glass substrate; a second glass substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at a pressure less than atmospheric pressure; and a seal having at least a first seal layer provided between at least the first and second substrates. The first seal layer and / or a tube seal of the panel may be designed to have an increased density. In order to form a layer of the seal for the edge seal and / or tube seal, a glass composition may be provided such as in a paste which may also include filler, binder and / or solvent. The glass composition (e.g., the glass, such as glass powder, present in a paste before firing) for use in forming the seal layer may include tellurium oxide, bismuth oxide, and optionally vanadium oxide, and may be designed to increase the density of the seal layer.

A vacuum insulating panel includes first and second substrates (e.g., glass substrates), a hermetic edge seal, a pump-out port, and spacers sandwiched between at least the two substrates. The gap between the substrates may be at a pressure less than atmospheric pressure to provide insulating properties. A sensor body (e.g., spinnable magnetic body, which may be substantially spherical in shape) is provided at least partially in a recess defined in at least one of the substrates, and is configured to be spun at a high rate of speed in order to measure a pressure of the recess and / or gap between the substrates.

The utility model relates to the technical field of vacuum insulated panel manufacturing equipment, and discloses a vacuum insulated panel processing and forming device which comprises a workbench, a rotating shaft is fixedly connected to the rear side of the top of the outer wall of the workbench, a motor is fixedly connected to the front side of the inner wall of a sealing cover, and the output end of the motor is fixedly connected with a first adjusting plate. And the rear side of the outer wall of the motor is fixedly connected with a limiting ring, the bottom of the outer wall of the workbench is fixedly connected with a replacing mechanism, and the replacing mechanism is used for rapidly replacing the vacuum heat insulation plate. The motor drives the moving ring through the first adjusting plate and the connecting plates to exhaust the surface of the plate surface, the outer side of the moving ring is connected with the connecting plates to enhance stability, the rotating range is controlled through the limiting ring, the structural connectivity is improved, and the structural rotating and rolling flexibility is enhanced; the height can be adjusted to meet different product requirements, the forming speed is increased, and the product quality is improved.

A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure; and a seal (e.g., edge seal) provided at least partially between at least the first and second glass substrates. Components such as edge seal material(s) and / or dimension(s) thereof are configured in a vacuum insulating panel to improve thermal performance to provide for higher glass temperatures on the warm side of the panel during asymmetric thermal conditions, proximate the edge seal and / or at other locations, so as to improve thermal performance.

This utility model discloses a non-circular window structure for ultra-low energy consumption buildings, relating to the technical field of non-circular window structure construction. The utility model includes a wall; a hot-dip galvanized channel steel is fixedly connected to the inner wall of the wall; a hot-dip galvanized angle steel is fixedly connected to the outer wall of the hot-dip galvanized channel steel and the wall; a hot-dip galvanized square steel is fixedly connected to the hot-dip galvanized angle steel and the hot-dip galvanized channel steel; an aluminum alloy frame is fixedly connected to the outer wall of the hot-dip galvanized square steel; a non-circular window is installed on the inner wall of the aluminum alloy frame; an exterior wall cladding panel is fixedly connected to one outer side of the aluminum alloy frame; and a vacuum insulation panel is fixedly connected to an adjacent wall. This utility model, through the use of this device, adds multiple cavities at the junction of the window and the wall, and fills the corresponding cavities with heat insulation material, avoiding the formation of complex thermal bridges at the junction of the window and the wall, which leads to increased heat conduction and energy consumption, effectively improving the energy efficiency and economy of this device.

The invention relates to the technical field of heat insulation materials, and particularly provides a core material and a preparation method thereof, a vacuum insulation panel and a heat insulation device, the core material comprises a core material base material and a getter, and the getter is loaded on the surface of the core material base material through a reduction reaction. The getter and the core material base material are stably connected in a chemical bond mode, the stability of the core material prepared by integrally forming the getter and the core material base material is remarkably improved, the getter performance of the getter can be brought into play, the getter can be loaded on the inner surface and the outer surface of the whole core material, and therefore the getter effect of the core material is remarkably improved. The vacuum insulated panel prepared from the core material has a lower heat conductivity coefficient, especially for some curved and curved vacuum insulated panels with special-shaped structures, the heat conductivity coefficient of the vacuum insulated panel can be remarkably reduced, excellent heat insulation performance is kept, and the service life of the vacuum insulated panel is prolonged. The vacuum insulated panel has huge application value in the fields of buildings, household appliances and aviation.

The utility model provides a vacuum insulated panel and a heat preservation box, which can improve gaps when the vacuum insulated panel is spliced and reduce cold and heat loss in the using process. The vacuum insulated panel comprises a core material and an outer wrapping bag. The length and the width of the outer packaging bag are larger than those of the core material. The plate face of the core material comprises a first face and a second face which are oppositely arranged. The redundant part of the outer packaging bag comprises a first edge, a second edge and a corner part, and the redundant part is fixedly attached to the core material through a turnover structure. The folding structure comprises a first edge folding unit, an angle folding unit and a second edge folding unit. The first edge folding unit is formed in the mode that the first edge is folded inwards and attached to the first face in the mode that the first edge is tightly attached to the outline of the core material. The folding mark of the first edge folding unit extends to the corner part and folds the corner part, and the folded corner part is folded inwards and attached to the first edge and the first face in the mode that the folded corner part is tightly attached to the outline of the core material to form the corner folding unit. The second edge folding unit is formed in the mode that the second edge is folded inwards and attached to the corner and the first face in the mode that the second edge is tightly attached to the outline of the core material.

The invention discloses a low-temperature test box and a low-temperature test method for an integrated circuit board, and belongs to the technical field of low-temperature performance test of the integrated circuit board. The method is used for solving at least one problem that in the prior art, a low-temperature test box material easily generates microcracks in a low-temperature environment, so that heat insulation performance is reduced, and external temperature interference cannot be effectively isolated. According to the low-temperature test box, a test box body comprises an outer protective shell and a main heat insulation layer which are sequentially stacked from outside to inside; the main heat insulation layer comprises a hard heat insulation outer layer, a vacuum heat insulation plate and an aerogel felt layer which are sequentially stacked from outside to inside. The method comprises the following steps: cooling a first integrated circuit board to a first temperature for the first time, and then carrying out heat preservation for the first time; carrying out secondary cooling on the first integrated circuit board after primary heat preservation to a second temperature, and then carrying out secondary heat preservation; in the step 3 and the step 4, temperature data of the first integrated circuit board are collected through an infrared temperature detector. The method can be used for low-temperature testing of the integrated circuit board.

A vacuum insulating panel includes first and second substrates (e.g., glass substrates), a hermetic edge seal, a pump-out port, and spacers sandwiched between at least the two substrates. The gap between the substrates may be at a pressure less than atmospheric pressure to provide insulating properties. The vacuum insulating panel may include a multi-layer edge seal structure, including at least one layer including boron oxide (e.g., B2O3 or any other stoichiometry).

The utility model discloses a novel heat preservation balcony which comprises a main frame, a composite heat preservation layer is embedded in the main frame, the composite heat preservation layer is formed by alternately laminating XPS extruded sheets and vacuum heat insulation plates, a double-layer hollow glass window is installed on the outer side of the main frame, and folding type metal heat insulation plate sets are connected to the two sides of the interior of the main frame through hinge mechanisms. And a linkage ventilation mechanism is mounted at the top of the box body and comprises a worm and gear transmission assembly and an adjustable shutter. The heat-preservation and heat-insulation window has good heat-preservation and heat-insulation performance, has ventilation and drainage functions, and has very high practicability.