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65results about How to "Avoid incoming" patented technology

Air conditioner and defrosting control method thereof

The invention discloses an air conditioner and a defrosting control method thereof. The method comprises the steps of when the air conditioner enters a defrosting mode and before the air conditioner performs defrosting action, carrying out refrigerant recycling control on a compressor, and controlling to turn off a second control valve to enable the air conditioner to enter a first refrigerant recycling process; judging whether the tube temperature of an evaporator is lower than or equal to a first preset temperature or not; if the tube temperature of the evaporator is lower than or equal to the first preset temperature, controlling to turn off a first control valve and turn off the compressor, and controlling to deenergize a four-way valve and to change the direction of the four-way valve; and after first preset time is delayed, controlling to turn on the first control valve and the second control valve at a preset speed, and controlling to turn on the compressor to enable the air conditioner to start performing defrosting action. According to the method, before the air conditioner performs defrosting action, a refrigerant is recycled beside the compressor, and when the system pressure is balanced, the direction of the four-way valve is changed, so that the situation that when the system pressure is imbalanced, noise is generated due to direction change and enters a room is avoided.
Owner:WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1

Device and method for measuring heat exchange coefficient of interface in hot stamp process

ActiveCN103033530ARealize the test of interface heat transfer coefficientAvoid incomingMaterial heat developmentSteel platesStamping process
The invention discloses a device for measuring a heat exchange coefficient of an interface between a high-temperature steel plate and a die in a hot stamp process. The device comprises a pressure applying device and a measurement device, wherein the pressure applying device comprises a pressurization device, an upper workbench and a lower workbench, wherein the pressurization device is connected with the upper workbench and the lower workbench respectively; the measurement device comprises an upper fixture, a lower fixture and a test sample fixing fixture; the upper fixture is fixed on the upper workbench; the lower fixture is fixed on the lower workbench; and the test sample fixing fixture is arranged between the upper fixture and the lower fixture. The invention also discloses a method for measuring the heat exchange coefficient of the interface between the high-temperature steel plate and the die in the hot stamp process. By the device and the method, the limitation to samples with the thickness being more than 30mm in the prior art is avoided; the heat exchange coefficient of the interface between the steel plate and the die in the hot stamp process can be measured; and by an elastic energy storage element, stabilization of interface pressures between a boron steel test sample and an upper die and between the boron steel test sample and a lower die can be guaranteed.
Owner:滕州市产品质量监督检验所

Safe diffusing device for gas transmission and using method

The invention belongs to the technical field of gas power generation sets, and provides a safe diffusing device for gas transmission and a using method. The safe diffusing device for gas transmission is provided with a hollow cylinder (3) with the two ends closed, an air inlet pipe (4) is arranged in the hollow cylinder (3), and the diameter of the air inlet pipe (4) is smaller than that of the hollow cylinder (3); the air inlet pipe (4) is provided with a straight pipe section, and a gap is formed between an air outlet of the lower end of the straight pipe section and the bottom face of the hollow cylinder; a bent pipe section bent toward one side is arranged at the upper end of the straight pipe section, an outlet of the bent pipe section is located at the upper end of one side wall face of the hollow cylinder (3), and water for carrying out water seal on gas exists in the gap between the air inlet pipe (4) and the hollow cylinder (3); a water level control valve is installed on one side wall face of the hollow cylinder (3), and a diffusing opening (5) is formed in the upper end face of the hollow cylinder (3). Constant pressure diffusion at multiple pressure levels is achieved to meet different process requirements, and the function of pressure stabilization and overpressure diffusion is achieved.
Owner:HENAN DIESEL ENGINE IND

Quartz vibrating beam accelerometer sensitive assembly

InactiveCN110988396ABlocking incomingAvoid incomingAcceleration measurement using interia forcesBeam energyAccelerometry technique
The invention relates to the technical field of accelerometers, and discloses a quartz vibrating beam accelerometer sensitive assembly. The assembly comprises an outer frame, a flexible supporting piece, an isolation frame, an outer connecting piece, an inner connecting piece, a bracket, a detection mass block and a vibrating beam, the isolation frame is positioned in the outer frame; the outer side of one end of the isolation frame is connected with the inner side of the outer frame; the inner side of the other end of the isolation frame is connected with the bracket through inner connectors;one end of the vibration beam is connected with the detection mass block, the other end of the vibration beam is connected with the support, flexible supporting pieces are arranged between the upperend face of the support and the lower end face of the detection mass block and symmetrically distributed on the two sides of the vibration beam, the vibration beam and the flexible supporting pieces are not coplanar, and the flexible supporting pieces on the two sides are coplanar. Therefore, by additionally arranging the isolation frame and related components, a vibration beam energy dissipationchannel can be blocked, a double-interdigital structure is simplified into a single-interdigital structure, and a narrow gap is avoided. Moreover, the isolation frame can block the introduction of external thermal stress, thereby improving the temperature environment adaptability of the accelerometer.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST

Train pressure wave protection control method, device and equipment as well as readable storage medium

The invention discloses a train pressure wave protection control method. The method comprises the following steps that a sensing signal flicker frequency sent by a signal identification device is received; the current train entering and exiting tunnel state corresponding to the sensing signal flicker frequency is looked up from a train entering and exiting tunnel state table; when it is determinedthat the current train entering and exiting tunnel state is in the entering tunnel state, a pressure wave protection opening instruction is sent to a pressure wave protection actuator, so that the pressure wave protection actuator closes a valve to isolate a ventilation opening between the interior and the exterior of a vehicle; and when it is determined that the current train entering and exiting tunnel state is in the exiting tunnel state, after the first preset time delays, a pressure wave protection ending command is sent to the pressure wave protection actuator to enable the pressure wave protection actuator to open the valve to open the ventilation opening between the interior and the exterior of the vehicle. According to the method, the pressure wave is prevented from being transmitted into the vehicle, adverse effects on passengers are prevented, and the passenger experience is improved. The invention further discloses a train pressure wave protection control device and equipment as well as a storage medium, which have corresponding technical effects.
Owner:NEW UNITED RAIL TRANSIT TECH

Train pressure wave protection control method, device, equipment and readable storage medium

The invention discloses a train pressure wave protection control method. The method comprises the following steps that a sensing signal flicker frequency sent by a signal identification device is received; the current train entering and exiting tunnel state corresponding to the sensing signal flicker frequency is looked up from a train entering and exiting tunnel state table; when it is determinedthat the current train entering and exiting tunnel state is in the entering tunnel state, a pressure wave protection opening instruction is sent to a pressure wave protection actuator, so that the pressure wave protection actuator closes a valve to isolate a ventilation opening between the interior and the exterior of a vehicle; and when it is determined that the current train entering and exiting tunnel state is in the exiting tunnel state, after the first preset time delays, a pressure wave protection ending command is sent to the pressure wave protection actuator to enable the pressure wave protection actuator to open the valve to open the ventilation opening between the interior and the exterior of the vehicle. According to the method, the pressure wave is prevented from being transmitted into the vehicle, adverse effects on passengers are prevented, and the passenger experience is improved. The invention further discloses a train pressure wave protection control device and equipment as well as a storage medium, which have corresponding technical effects.
Owner:NEW UNITED RAIL TRANSIT TECH

Anti-deformation soundproof PVC wood-plastic composite floor

The invention discloses an anti-deformation soundproof PVC wood-plastic composite floor. The anti-deformation soundproof PVC wood-plastic composite floor comprises a PVC plate, venting holes, sound absorbing plates, keels and a non-slip layer. The PVC plate is internally provided with through holes, receiving holes are formed below the through holes, springs are disposed under the receiving holes,a moisture absorbing layer is disposed under the springs, the venting holes are located on the outer sides of the springs, and sealing blocks are disposed in the venting holes. The sound absorbing plates are located on the lower surface of the moisture absorbing layer, extruded sheets are disposed in the sound absorbing plates, and the keels are located on the lower surface of the PVC plate. A connecting groove is formed in the left side of the PVC plate, a connecting block is disposed on the right side of the PVC plate, and the non-slip layer is located on the upper surface of the PVC plate.The anti-deformation soundproof PVC wood-plastic composite floor is not prone to deforming and cracking, is stable and durable in structure, and has a moisture-proof function. The non-slip layer is arranged on the lower part of the PVC plate, the plate can be prevented from deforming due to damp, and the sound absorbing plates under the plate can absorb sound and play a role of soundproofing.
Owner:舒城欧舍丽新材料科技有限公司

Vehicle body, railway vehicle and built-in assembly of railway vehicle

The invention provides a vehicle body, a railway vehicle and a built-in assembly of the railway vehicle. The interior assembly of the railway vehicle comprises a floor framework and an interior wall plate installed on the railway vehicle; a vertical handrail, the first end of the vertical handrail is hoisted on a vehicle body top plate of the railway vehicle, and the second end extends into a passenger room of the railway vehicle; and a passenger room floor which is hung at the second end of the floor framework and/or the vertical handrail so as to separate the passenger room floor from the vehicle body floor. According to the interior assembly of the railway vehicle, the passenger room floor and the equipment under the vehicle can be isolated from each other, noise generated in the running process of the equipment under the vehicle is prevented from being transmitted into a passenger room through the passenger room floor, and the noise in the passenger room is reduced. The transverse span of the guest room floor can be reduced, and the rigidity requirement of the guest room floor is met. The vertical handrail can be supported and fixed, and the structural strength of the passenger room floor can be enhanced. The passenger room floor, the floor framework and the vertical handrail can be assembled and formed under the vehicle and then integrally installed on the vehicle body after being assembled, and the vehicle body assembling efficiency can be improved.
Owner:CRRC QINGDAO SIFANG CO LTD

Novel type low temperature booster pump gas bottle structure

The invention belongs to the technical field of booster pumps and particularly relates to a novel type low temperature booster pump gas bottle structure. The novel type low temperature booster pump gas bottle structure comprises an inner container assembly, an outer container assembly, a reciprocating type low temperature booster pump, a pump supporting assembly and a pipeline assembly. The innercontainer assembly is arranged in the outer container assembly. A heat insulation interlayer is arranged between the outer container assembly and the inner container assembly. A front end supporting assembly is arranged at one end between the outer container assembly and the inner container assembly, and an inner rear sealing head assembly is arranged at the other end between the outer container assembly and the inner container assembly. The reciprocating type low temperature booster pump penetrates through the outer container assembly and the inner container assembly, extends into the insideof the inner container assembly and is supported through the pump supporting assembly in the inner container assembly. The novel type low temperature booster pump gas bottle structure has the beneficial effects that the continuous travelling mileage of a vehicle is increased, and the service life of the reciprocating type low temperature pump and a gas bottle is prolonged.
Owner:英嘉动力科技无锡有限公司

Multifunctional room door

The invention discloses a multifunctional room door. The multifunctional room door comprises an inner board layer, a sound insulation layer, an anti-theft layer, an outer board layer, a waterproof layer and a door frame, wherein the inner board layer, the sound insulation layer, the anti-theft layer, the outer board layer and the waterproof layer are sequentially arranged from inside to outside; a first vent hole is formed in the inner board layer; an air valve is arranged on the outer side of the first vent hole; a second vent hole communicated with the first vent hole is formed in the lead sound insulation layer; a groove is formed in the anti-theft layer; the end part of the groove is connected with the lead sound insulation layer; a closed air chamber is formed between the sound insulation layer and the anti-theft layer and is communicated with the second vent hole; the section of the door frame is U-shaped; the bottom of the door frame of which the section is U-shaped is propped against the inner board layer, the sound insulation layer, the anti-theft layer and the outer board layer respectively; two side walls of the door frame of which the section is U-shaped are propped against the inner board layer and the waterproof layer respectively. The technical defect that an existing room door does not have the sound-insulating, heat-insulating and waterproof functions is overcome. The invention provides the multifunctional room door with the anti-theft, sound-insulating, heat-insulating and waterproof functions.
Owner:CHONGQING OFAN DOOR IND

Foundation platform used for vibration reduction and isolation of mechanical equipment and design method of foundation platform

The invention discloses a foundation platform used for vibration reduction and isolation of mechanical equipment and a design method of the foundation platform, and belongs to the field of machine vibration reduction. The foundation platform comprises a cast iron platform, a reinforced concrete platform, vibration isolators, bases and ground anchor devices. The cast iron platform is fixed to the upper surface of the reinforced concrete platform through the multiple ground anchor devices. The multiple bases are evenly arranged below the reinforced concrete platform. One vibration isolator is detachably mounted between the lower surface of the cast iron platform and each base, and each vibration isolator is formed by at least one spring. According to the foundation platform, the compositionstructure of the foundation platform is improved, platform vibration is reduced through the vibration isolators, transmission of vibration of outside power equipment and pipelines towards equipment mounted on the platform is attenuated, design of the structure parameters and construction scheme of the foundation platform is guided through the innovative design method, and therefore the technical problems that in the prior art, vibration control is inaccurate, special design targeted performance is lacked, and maintenance is not easy are solved.
Owner:HUAZHONG UNIV OF SCI & TECH

Cell transportation equipment

The invention relates to the technical field of transportation, in particular to cell transportation equipment. The equipment comprises a box body and a containing box, wherein the containing box is used for containing transported cells and arranged in the box body in a suspended mode. The equipment further comprises a fixing piece, wherein the fixing piece is located between the containing box and the inner wall of the box body and is fixedly arranged in the box body, and the fixing piece is provided with a through groove with a notch facing the containing box; the first damping piece is inserted into the through groove and fixedly connected with the groove top and the groove bottom of the through groove, wherein a mounting groove with a notch facing the containing box is formed in the middle of the first damping piece, and the first damping piece is used for damping the containing box; and one end of a second damping piece is detachably inserted into the mounting groove, and the other end of the second damping piece is fixedly connected with the containing box and used for damping the containing box. According to the cell transportation equipment, the problem that the death rateof the transported cells is increased due to poor shockproof performance in the transportation process of an existing cell transportation equipment can be solved.
Owner:THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV

Suspended type vibration and noise reduction window

PendingCN108412391AGuaranteed tightnessAchieve vibration and noise reduction effectsWindow/door framesNoise insulation doors/windowsEngineeringExternal noise
The invention discloses a suspended type vibration and noise reduction window. The window comprises a window frame, hinges, window glass and gas/liquid sealing loops. The window frame is fixedly connected to a window base, hollow guide sliding grooves the number of which is the same as that of the window glass are formed in the top of the inner wall of the window frame, the upper parts of the hinges are cylinders and are embedded in the corresponding hollow guide sliding grooves, the window glass is fixedly connected to the lower parts of the hinges to be suspended on the window frame, and thegas/liquid sealing loops are arranged around both sides of the window glass. The window glass is suspended in the hollow guide sliding grooves of the window frame through the hinges so that the window glass can be freely opened and closed, and meanwhile through the suspending characteristic, the transmission path of external vibration to the window glass can effectively decreased. According to the gas/liquid sealing loops, the sealing performance of the window in a closed state is ensured, introduction of external noise is avoided, and meanwhile the effective constraint of the window glass inclosed and open states is ensured, so that the vibration of the window glass is reduced, and therefore the vibration and noise reduction effect of the window under different states is achieved.
Owner:SHANDONG UNIV OF TECH

Unballasted track bed plate construction method

The invention relates to a construction method of the bottom seat plate of the ballastless track, which belongs to a construction process method of tracks. The purpose of the invention is to provide a reliable construction method of the bottom seat plate of the ballastless track on bridges to meet the quality and accuracy requirement of the bottom seat plate of the ballastless track. The construction method comprises the following steps: step one, firstly, the bridge floor is checked and accepted and assessed before planking; secondly, the stakingout connecting line of the bottom seat plate is measured; thirdly, the connection of the fixed bolt is arranged; fourthly, a sliding layer with two cloth and one film is laid on the bridge floor of the box-beam bridge; step two, a hard plastics foam layer is laid on the two ends of the beam slot; step three, a post casting strip connector is installed; step four, firstly, tooth socket welding studs are installed; secondly, bottom seat plate reinforcing bars are installed; step five, bottom seat plate mould plates are installed; step six, the concrete of the bottom seat plate is cast; step seven, the cast post casting strip and the weldingstud tooth socket are fixedly connected, and the connection of the bottom seat plates is completed.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD
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