67 results about "Active ventilation" patented technology

The oven with the rotary air cooling function comprises an oven body, a semi-cylindrical containing cavity extending backwards is formed in the middle of the front wall face of the oven body, one side of the front wall face of the oven body is movably connected with a semi-circular-arc-shaped door body through a plurality of hinges, and the semi-circular-arc-shaped door body and the semi-cylindrical containing cavity form a cylindrical cavity; semicircular protruding plate parts extending forwards are formed on the front wall faces of a bottom plate and a top plate of the oven body, and the outer side walls of the semicircular protruding plate parts are matched with the inner side wall of the top plate or the bottom of the door body. After a product is baked, active ventilation can be directly carried out, internal cooling is carried out, the cooling effect is good, cooling is rapid, contact with external people or objects or insects and the like is avoided, and the sanitary effect is guaranteed.

The invention discloses an inter-plant light supplement lamp intelligent control system based on PWM dimming and wireless networking, and relates to the technical field of plant light supplement illumination control, and during operation of the system, the system comprises a central management server, a wireless communication gateway, an environmental data acquisition unit, an intelligent ventilation light supplement terminal, a distributed power supply management unit and a mobile monitoring terminal. The server generates a PWM control instruction based on the environmental parameters and issues the PWM control instruction to the intelligent terminal through the wireless gateway; and the terminal adjusts the light intensity of the LED array by using the PWM driving unit, and synchronously controls the active ventilation device to improve the microenvironment between plants. Through deep integration of PWM dimming and wireless networking, gridding management and control of the greenhouse environment are realized, the photosynthetic efficiency of the middle and lower parts of plants is effectively improved, the gas diffusion rate is enhanced, the system wiring cost and energy efficiency loss are reduced, and precise agricultural production is realized.

An airbag unit is described. The airbag unit includes an airbag having an outer skin (50), an inflator for inflating the outer skin (50), and a structure including a receiving portion for the airbag, wherein an undeployed airbag is received in the receiving portion. For ventilation of the outer skin of the airbag, an active ventilation arrangement having a first state and an activated second state is further provided. The active ventilation arrangement includes: an opening (52) in the outer skin (50); a covering element (10) having an initial state in which, when the active ventilation arrangement is in its first state, the covering element covers the opening (52) in the outer skin; a tether element extending from a first end portion (40a) attached to the covering element (10) to a second end portion; and a fixing feature to which the second end portion of the tether element is attached. The fixing feature includes an active release arrangement that releases or destroys the tether element upon activation. When the outer skin (50) is fully extended and the second end portion of the tether element (40) is not released or broken, the tether element is under tension and holds the cover element (10) in its initial state, thus placing the active ventilation arrangement in its first state. To provide an active ventilation arrangement that has little or no leakage in the initial first state and provides strong ventilation in the activated second state, the following measures are taken: the cover element (10) is attached to the outer surface of the outer skin (50) by a connector (54) having a first portion (55) and a second portion (56). Furthermore, the free edge (11) of the cover element (10) extends between the two portions (55, 56) of the connector (54). Finally, the cover element (10) is folded along at least a first pair of fold lines such that the cover element in its initial state includes a first side portion (14), a main portion (12), and at least one first clamping portion sandwiched between the first side portion (14) and the main portion (12), wherein the first portion (55) of the connector (54) connects the first side portion (14) to the outer skin (50) (Fig. 16).

The invention relates to the field of electrical stimulation equipment, and discloses a multifunctional muscle training instrument for preventing muscle atrophy, which comprises a flitch plate, a control panel is mounted at one end of the flitch plate, a display screen is mounted at the top of the control panel, a plurality of buttons are arranged at one end of the control panel, a plurality of bearing plates are mounted at one end of the flitch plate, and the bearing plates are connected with the control panel. One end of the bearing plate is electrically connected with a plurality of electrode plates, a lithium battery is arranged in the control panel, and a heat dissipation assembly is arranged in the flitch; the heat dissipation assembly comprises filter screens, the filter screens are symmetrically installed on the two sides of the control panel, and a plurality of motors are installed in the control panel. The motor, the air duct structure and the fan blade assembly are arranged in the control panel, and the porous air pipe structure is arranged in a connected mode, so that a closed-loop type active ventilation cooling system is effectively formed, wind power can be stably conveyed to the contact face of the flitch and the skin, and the local area heat dissipation function is achieved.

The utility model relates to the technical field of backpacks, in particular to a backpack with a good back ventilation effect, which comprises a backpack body, straps and a ventilation component, the straps are symmetrically arranged on the left side and the right side of the back side of the backpack body, and the ventilation component comprises a cushion, a ventilation head, a machine frame, a cooling fan, an air collecting cover and a ventilation pipe. An L-shaped cushion is further arranged on the back side of the backpack body, a machine frame is embedded in the bottom wall of the cushion, a heat dissipation fan is arranged in the machine frame, and the backpack with the good back ventilation effect constructs an active ventilation system through the built-in heat dissipation fan, the built-in air collection cover, the built-in ventilation pipe and the built-in ventilation head. According to the system, external fresh air can be effectively guided to enter the cushion pad, making contact with the human body, of the back of the knapsack through the vent pipes and then is evenly distributed through the ventilation heads, air circulation of the back is promoted, the air permeability and dryness of the back are greatly improved, and particularly during hot or high-intensity exercise, sweat wetness and discomfort of the back can be remarkably reduced.

Turbomachine nacelle equipped with an active ventilation vent. A turbomachine nacelle includes a ventilation vent (200) comprising: - a first ring (210) defining a ventilation opening (211), - a plurality of blades (220) extending into the ventilation opening of the first ring, each blade (220) having a fixed section (221) and a pivoting section (222), - a second ring (230) movable for rotation, the first ring (210) being rotationally meshed with the second ring (230), - a drive motor for rotating the second ring (230). When the second ring (230) is rotated, the pivoting sections (222) of the blades of the plurality of blades (220) are oriented in a direction (D2) different from the direction (D1) of the fixed sections. Figure for the abbreviation: Fig. 3.

The entrance door with the ventilation structure comprises an outer door plate and an inner door plate, the outer door plate and the inner door plate are fixedly installed, after installation, a cavity is formed between the outer door plate and the inner door plate, a first ring body and a second ring body are arranged on the inner side of the outer door plate, and the first ring body and the second ring body are arranged on the inner side of the outer door plate. An annular air channel is formed between the first ring body and the second ring body, a plurality of air inlet holes are annularly distributed in the position, located on the inner side of the first ring body, of the plate face of the outer door plate, a stepped hole corresponding to the first ring body is formed in the plate face of the inner door plate, and an air inlet device covers the interior of the stepped hole. The air inlet device corresponds to the inner side of the second ring body, and ventilation holes are evenly distributed in the inner wall of the second ring body. The device can communicate indoor and outdoor for active ventilation.

The utility model belongs to the technical field of air purification, and particularly relates to an all-round type photocatalyst purifier which is characterized in that when the all-round type photocatalyst purifier is used, an active ventilation assembly exhausts air to the outside of a shell, so that a negative pressure environment is formed in the shell, outside air enters the shell and firstly passes through a first filtering assembly, and dust in the air is removed; then the air passes through the second filter assembly, the second filter assembly adsorbs part of harmful substances in the air, then the air passes through the air purification mechanism, the air purification mechanism catalyzes and oxidizes the harmful substances which are not adsorbed by the second filter assembly, and the air purified by the air purification mechanism is discharged out of the shell through the active ventilation assembly. Therefore, air purification is completed. According to the air purifier, harmful substances in the air can be filtered, adsorbed and decomposed, and the air is effectively purified.

The utility model discloses an active ventilation forest musk deer breeding house which comprises a wall body, an air inlet pipe is arranged at an air inlet in the lower side of the left end of the wall body, an exhaust pipe is arranged at an air inlet in the lower side of the right end of the wall body, and the active ventilation forest musk deer breeding house further comprises an air volume adjusting mechanism. The air volume adjusting mechanism comprises a sliding plate, a baffle, a spring and a telescopic rod, sliding grooves are formed in the front inner wall and the rear inner wall of the right side in the air inlet pipe correspondingly, the sliding plate is slidably connected between the two sliding grooves, the baffle is arranged at the right end of the air inlet pipe, and the right side face of the sliding plate is tightly connected with the left side face of the baffle. According to the active ventilation forest musk deer breeding house, when forest musk deer breeding is conducted, the ventilation quantity can be adjusted according to the air quality in the breeding house, the ventilation quantity can be adjusted according to the air quality in the breeding house, and the breeding efficiency is improved. And the air quality in the breeding house is effectively adjusted.

The invention relates to a ventilation profile for actively ventilating and / or extracting air from a building waterproofing system, wherein the building waterproofing system protects and / or seals a wall of a building, in particular a house, on an outer surface of the wall by means of a moisture-proof or moisture-resistant protective layer against penetrating moisture from surrounding soil, wherein the protective layer is arranged in a protective layer plane spaced from the wall by means of spacers between the wall and surrounding soil and thus a ventilation space is formed between the protective layer and the wall, wherein a connecting strip is arranged on an upper connecting line of the protective layer along a connecting axis and the protective layer is connected to the wall at an upper connecting line by means of the connecting strip, wherein the connecting strip has at least one fluid-carrying ventilation access to the ventilation space.Furthermore, the invention relates to a building seal with such a ventilation profile and a method for actively ventilating and / or de-ventilating a building seal in several steps.

The invention relates to the technical field of energy-saving and environment-friendly windows, in particular to an energy-saving and environment-friendly window integrated with an active ventilation structure. The system comprises a window frame, a window sash, an active ventilation unit, a sensor unit, a control unit and a power supply unit. A guide rail is arranged in the window frame, and the window sash is installed on the guide rail through a sliding assembly and can slide on the guide rail. The active ventilation unit comprises an air inlet, an air outlet, an air duct, an air volume adjusting valve and a miniature fan. The sensor unit integrates a temperature sensor, a humidity sensor, an air quality sensor, an illuminance sensor and an environment noise sensor, and environment parameters are monitored in real time. The control unit processes data through the central processing unit and automatically adjusts the system state according to an algorithm. The power supply unit is composed of a solar cell panel, a main power supply and a standby power supply to ensure normal operation of the system. The indoor environment can be intelligently adjusted, the air quality is improved, the energy consumption is reduced, and the user comfort is improved.

The invention discloses an intelligent ventilation type latex mattress, and relates to the technical field of latex mattresses, the intelligent ventilation type latex mattress comprises a surface layer and a ventilation assembly, and is characterized in that the ventilation assembly is arranged on the front side of a mattress surrounding layer, the ventilation assembly comprises double centrifugal fans, a filter screen, an air inducing pipe, a butt joint pipe and an exhaust pipe, and external air can be introduced into the mattress after being filtered; meanwhile, an orientation adjusting structure and a moving structure are further arranged and can respectively drive the exhaust pipe to perform angle deflection and front-back reciprocating motion, so that the air supply direction and the coverage range are dynamically adjusted, and uniform and intelligent distribution of airflow in the mattress is realized; the problems that a traditional latex mattress is prone to heat accumulation and uneven in ventilation in a high-temperature environment are effectively solved, and sleeping comfort and health are improved.

An airbag unit is described. This airbag unit comprises an airbag having an outer skin (50), an inflator for inflating said outer skin (50), and a structure comprising an accommodation for the airbag, wherein the un-deployed airbag is accommodated in said accommodation. For ventilation of the outer skin of the airbag, an active ventilation arrangement comprising a first state and an activated second state is additionally provided. This active ventilation arrangement comprises a hole (52) in the outer skin (50), a covering element (10) having an initial state, in which it covers the hole (52) in the outer skin when the active ventilation arrangement is in its first state, a tether element extending from a first end section (40a) being attached to the covering element (10) to a second end section, and an holding feature to which the second end section of the tether element is attached. This holding feature comprising an active release arrangement that releases or destroys the tether element upon activation. When the outer skin (50) is fully deployed and the second end section of the tether element (40) is not released or destroyed, the tether element is under tension and holds the covering element (10) in its initial state, such that the active ventilation arrangement is in its first state. In order to provide an active ventilation arrangement which has only little or no leakage in the initial first state and provides strong ventilation in the activated second state, the following measures are taken: The covering element (10) is attached to the outer surface of the outer skin (50) by means of a connection (54) having a first section (55) and a second section (56). Further, a free edge (11) of the covering element (10) extends between the two sections (55, 56) of the connection (54). Finally, the covering element (10) is folded along at least a first pair of folding lines such that it comprises in its initial state a first side portion (14), a main portion (12) and at least one first sandwiched portion sandwiched between the first side portion (14) and the main portion (12), wherein the first section (55) of the connection (54) connects the first side portion (14) to the outer skin (50) (Fig. 16).

The invention provides a quick demarcation circuit breaker, and relates to the technical field of demarcation circuit breakers. The circuit breaker comprises a shell, a permanent magnetic mechanism, a ventilation mechanism, an air supply mechanism and a temperature change mechanism. And a ventilation gap is formed between the outer surface of the permanent magnetic mechanism and the inner wall of the shell. The ventilation mechanism is composed of a first blocking assembly and a second blocking assembly which are arranged at the two ends of the ventilation channel. The air supply mechanism is used for supplying air into the ventilation gap. The temperature change mechanism automatically switches states by sensing temperature changes, sequentially drives the blocking assemblies to open the ventilation paths and controls the air supply mechanism to be started at the same time, and heat is rapidly discharged. The structure can actively ventilate and cool in a high-temperature environment and effectively eliminate condensation, and solves the problems that an existing circuit breaker is lagged in heat dissipation response and low in overall performance.

The utility model discloses a unit type glass curtain wall ventilation structure, which relates to the technical field of curtain wall ventilators, and comprises a ventilator main body consisting of a T-shaped shell, a filter grating plate, a ventilation slot and a partition plate, and the partition plate divides the T-shaped shell into a natural ventilation bin and an active ventilation bin; and mounting plates are fixedly mounted on the inner side of the T-shaped shell and distributed in the active ventilation bin, exhaust fans are mounted on the inner sides of the mounting plates, and active ventilation operation can be conducted through operation of the exhaust fans. The partition plate is arranged to divide the interior of the T-shaped shell into the natural ventilation bin and the active ventilation bin, when the wind power of outdoor natural wind is reduced or no natural wind exists, the blocking assembly in the active ventilation bin can be opened, the exhaust fan can be started, the exhaust fan can generate suction force to suck outdoor air into a room, and the ventilation effect is good. And indoor air is exhausted outdoors through the natural ventilation bin, so that the effect of indoor air circulation is achieved, and the ventilation effect of the ventilator can be further improved.

The invention relates to an integrated ventilation and heat exchange system of a photovoltaic roof and a photovoltaic curtain wall and a design method, and belongs to the technical field of ventilation and heat exchange, the system is characterized in that an adjustable steel support is arranged in a photovoltaic roof area, an adjustable ventilation opening is formed in a photovoltaic curtain wall area, and a curtain wall cavity is formed between a photovoltaic curtain wall assembly and a wall body; wherein the adjustable steel bracket adjusts the thickness of the roof ventilation cavity according to the length and inclination angle of a photovoltaic array, and the adjustable ventilation opening optimizes the height of the ventilation opening according to the height and orientation of a curtain wall. When the system monitors that the temperature of the back face of the photovoltaic roof assembly or the back face of the photovoltaic curtain wall assembly or the indoor temperature is too high through a temperature sensor, active ventilation of a roof ventilation cavity and a curtain wall cavity is achieved by driving a cooling fan and adjusting the opening degree of a ventilation opening; the active ventilation can timely discharge the heat in the cavity, effectively reduces the temperature of the roof ventilation cavity and the curtain wall cavity, further reduces the working temperature of the photovoltaic module, finally prolongs the service life of the photovoltaic module, and improves the photoelectric conversion efficiency of the photovoltaic module.

The utility model discloses an active ventilation door and relates to the technical field of doors and windows. The active ventilation door comprises a door leaf, the door leaf is provided with a cavity, an air inlet channel and an air exhaust channel, the cavity penetrates through the two opposite sides of the door leaf in the thickness direction of the door leaf to form an opening structure, and the air inlet channel and the air exhaust channel both extend and penetrate through the door leaf in the thickness direction of the door leaf to form an air opening structure; the air inlet channel and the air exhaust channel are both provided with the fan assemblies; the two opposite sides of the air inlet channel and the two opposite sides of the air exhaust channel are each provided with the corresponding sealing plate assembly used for opening and closing the air opening structure. And the telescopic assembly is arranged in the cavity, the movable end of the telescopic assembly penetrates through the opening structure to be connected with the sealing plate assembly, and the telescopic assembly can drive the sealing plate assembly to linearly move in the thickness direction of the door leaf so as to control opening and closing of the air inlet channel or the air exhaust channel. According to the utility model, active ventilation can be realized, and excellent sound insulation, heat insulation and heat preservation functions and an indoor space privacy protection effect can be provided.

Recreational vehicle (100) comprising: - a window pane (2) that separates an interior area (IB) of the recreational vehicle (100) from an exterior area (AB) surrounding the recreational vehicle (100), - an image capture device (5) whose field of view is directed towards the window pane (100), and - an active ventilation device which generates an airflow during operation to counteract condensation in the field of view, wherein the image acquisition device (5) and the active ventilation device are arranged in a common assembly (10).

Turbomachine nacelle equipped with an active ventilation vent. A turbomachine nacelle includes a ventilation vent (200) comprising: - a first ring (210) defining a ventilation opening (211), - a plurality of blades (220) extending into the ventilation opening of the first ring, each blade (220) having a fixed section (221) and a pivoting section (222), - a second ring (230) movable for rotation, the first ring (210) being rotationally meshed with the second ring (230), - a drive motor for rotating the second ring (230). When the second ring (230) is rotated, the pivoting sections (222) of the blades of the plurality of blades (220) are oriented in a direction (D2) different from the direction (D1) of the fixed sections. Figure for the abbreviation: Fig. 3.

An energy storage unit capable of controlling a thermal runaway, comprising an enclosure for housing battery modules for energy storage, a movable panel configurable between a closed position and an open position, a controllable actuator, connected to the movable panel, for moving the movable panel from the closed position to the open position, at least one sensor capable of measuring environmental parameters of the interior of the enclosure and a control unit connected to the sensor and the controllable actuator, for automatically activating the actuator and moving the panel from the closed position to the open position when at least one of the measured environmental parameters is indicative of thermal runaway, so that heat and explosive gases generated by the thermal runaway can escape outside the enclosure. A method for controlling a thermal runaway phenomenon of an energy storage unit comprising battery modules is also described.

The utility model belongs to the technical field of rubber shoe soles, and discloses a breathable rubber shoe sole which comprises a shoe sole body, a breathable insole is arranged on the shoe sole body, a breathable channel is formed in the shoe sole body and located at the bottom of the breathable insole, a ventilation assembly is arranged on the shoe sole body and located on one side of the breathable channel, and the breathable insole is arranged on the shoe sole body. The ventilation assembly is close to the heel; the ventilation assembly comprises a ventilation cylinder, the ventilation cylinder is embedded and fixedly installed in the shoe sole body, and a connecting rod is arranged at the top of the ventilation cylinder in a penetrating mode. According to the scheme, through mutual cooperation of the breathable insole, the breathable channels and the ventilation assembly, the rubber sole has the breathable function, through cooperation of a stress elastic piece, a connecting rod, a piston, a spring, a first air pipe and a second air pipe in the ventilation assembly, the rubber sole has the active ventilation function, and the breathable effect of the sole is further improved; the comfort and the adaptability of the sole are enhanced, and a healthier and more comfortable wearing experience is provided for a wearer.

The utility model discloses an active ventilation type sofa structure, which comprises a sofa frame, a seat cushion and a back cushion, the seat cushion and the back cushion are arranged on the sofa frame, an installation space is arranged between the seat cushion and the back cushion, a ventilation module is arranged in the installation space, and the ventilation module is movably arranged relative to the sofa frame; the sofa frame is provided with a locking module for restraining the front-back movement of the ventilation module. And the arranged ventilation module can be connected with an external fan to blow or suck air to a user in the sofa so as to drive air to flow and take away heat. And the ventilation module is movably arranged, so that the position of the ventilation module can be adjusted according to the back cushions with different thicknesses, and different use requirements are met.

This invention discloses a method for calculating the equivalent annual average temperature of tunnels in cold regions considering non-uniform ventilation. It can calculate both the equivalent annual average temperature and the equivalent coldest month's average temperature considering non-uniform ventilation, providing a theoretical method for calculating these two indicators and improving the accurate characterization of coldness in tunnels. This method provides key calculation parameters for determining the thickness of insulation layers in cold-region tunnels considering non-uniform ventilation. Furthermore, the equivalent annual average temperature of tunnels in cold regions calculated using this method plays an important role in guiding the design of drainage and waterproofing systems and active ventilation control in cold-region tunnels, leading to more accurate and rational frost protection designs for these tunnels.

A support cushion assembly comprises a foundation and a support cushion that is positioned atop the foundation. The support cushion includes an upper surface and a bottom surface. The support cushion assembly further includes a ventilation system configured to pull air downwards from the upper surface of the support surface and to release the pulled air under the foundation.

The application discloses a low-carbon type full-buried sewage treatment system and an operation and maintenance method, and relates to the technical field of sewage treatment. The low-carbon type full-buried sewage treatment system comprises an underground space, an unmanned operation and maintenance module, an intelligent ventilation module, an intelligent lighting module and a personnel detection module; the intelligent ventilation module comprises an air inlet shaft, an air outlet shaft, a passive ventilation assembly and an active ventilation assembly; and the intelligent lighting module comprises a passive lighting assembly and an active lighting assembly. When the underground space is unoccupied, the unmanned operation and maintenance module is used to maintain the operation of the low-carbon type full-buried sewage treatment system, the passive ventilation assembly and the passive lighting assembly are used to ventilate and light the underground space, and the system has low energy consumption; when a user enters the underground space, the active ventilation assembly and the active lighting assembly are used to enhance ventilation intensity and lighting intensity, guarantee the life safety of the user and provide a good field of view, so that the user can conveniently perform underground operation.

The invention discloses an anti-pressure injury monitoring device and a use method, and belongs to the technical field of nursing surgery, the anti-pressure injury monitoring device comprises an air bag supporting layer, and the air bag supporting layer is used for bearing a human body; the pressure sensor layer is arranged above the air bag supporting layer and used for sensing multi-point pressure data of a human body and a contact surface in real time, the device has a monitoring protection mode and an active ventilation mode, and in the monitoring protection mode, when the control assembly judges that the risk level reaches a preset threshold value, an alarm mechanism is triggered; in the active ventilation mode, the control assembly intermittently relieves pressure of the multiple rows of air bag units, the corresponding area of the air path mechanism is driven, and directional air flow pointing to the body surface of the patient is generated. Local pressure is physically reduced through deflation of the air bag unit, and more innovatively, directional airflow is actively conveyed to the corresponding body surface through a designed air path while pressure reduction is conducted, the airflow can directly take away moisture and redundant heat on the skin surface, and the pressed local skin is effectively dried and cooled.

The invention discloses a multi-disaster acousto-optic alarm device with a quick disassembly and assembly function, and relates to the technical field of acousto-optic alarms. A mounting groove is formed in the front face of the anti-explosion shell, and a detachable warning illuminating lamp is embedded into the mounting groove. A movable mounting seat is arranged at the lower end of the mounting groove, the warning illuminating lamp and the movable mounting seat form an outward deflection and separation structure at the mounting groove by taking a movable shaft as a shaft, and an electric ejector rod is mounted between the mounting groove and the warning illuminating lamp; a ventilation fan is installed in the explosion-proof shell and used for being matched with the detection module to conduct active ventilation detection, a detection air channel is reserved between the ventilation fan and the detection module, an attaching air hole is formed in the position, on the surface of the installation groove, of the side, close to the warning illuminating lamp, of the detection air channel, and a warning whistle is installed in the attaching air hole. The device has the advantages of being convenient and rapid to disassemble and assemble, flexible to use, good in protection performance, low in use cost, sensitive in active ventilation detection response, beneficial to rapid emergency response and capable of reducing disaster situation losses.

This invention provides an active ventilation and sand-proof structure for wind turbine generators, relating to the field of wind power generation technology. This active ventilation and sand-proof structure features an air inlet on the tower door, with a dust filter and fan installed at the inlet. The dust filter is located outside the fan, which drives external air through the filter before it enters the tower body. This achieves active ventilation inside the tower body, facilitating heat dissipation for related electrical equipment. Simultaneously, it creates positive pressure at the ventilation opening (the internal air pressure is greater than the external air pressure), ensuring that air inside the tower body can flow to the external environment. While achieving ventilation and heat dissipation, external air carrying sand and dust will not flow into the tower body through the ventilation opening. In other words, this active ventilation and sand-proof structure for wind turbine generators simultaneously addresses both tower ventilation and sand protection.

The present application relates to the technical field of medical devices, and discloses a head-pelvis ring traction and turning-over pillow device, which comprises a first base and a second base, a connecting module is arranged between the first base and the second base, an inner side of the first base is provided with a back supporting module, the back supporting module comprises a first sliding rail fixedly connected to the inner side of the first base, both ends of the first sliding rail are slidably connected with a first movable seat, the top of each of the two first movable seats is fixedly connected with a first extension pad, a middle part of the first base is provided with an adjusting piece for driving the two first movable seats to slide towards or away from each other, a back supporting piece is arranged between the two first movable seats, and a lateral supporting piece is movably connected to the outer side of each of the two first movable seats; an inner side of the second base is provided with a hip supporting module. The adjustable modular structure, integrated active ventilation system and safe body position fine adjustment function of the head-pelvis ring traction and turning-over pillow device can significantly improve the bed comfort and nursing safety of patients subjected to head-pelvis ring traction.

This application discloses a waterproof cabinet louver, comprising: a frame assembly, with a plurality of louver components arranged vertically at equal intervals on the inner side of the frame assembly; each louver component includes an upper half and a lower half, which are arranged alternately; an exhaust mechanism is also fixedly connected to one side of the frame assembly. In order to solve the technical problems in the prior art, such as the possibility of water leakage in ordinary louvers under severe windy and rainy weather, and the sacrifice of ventilation area leading to low heat dissipation efficiency of the cabinet, this application designs a louver that combines passive waterproofing, active airflow guidance, and active ventilation. The overall technical solution formed by the unique combination of louver components and exhaust mechanism can achieve efficient ventilation and heat dissipation on non-rainy days and switch to efficient waterproof mode on rainy days. At the same time, the special combination design of the upper and lower half can effectively collect and discharge any small amount of intruding moisture.