12results about How to "Avoid heat exchange" patented technology

This invention provides a method for determining the oil level of a compressor and an air conditioning system. The compressor has an oil sump, and a throttling element and a liquid temperature sensor are sequentially installed at the outlet of the oil sump. The liquid temperature sensor is used to measure the temperature Tk of the fluid flowing out of the oil sump after being throttled by the throttling element. The method includes: acquiring the compressor's high-pressure Ph, low-pressure Ps, discharge temperature Tp, and fluid temperature Tk; determining the compression ratio Px based on the high-pressure Ph and low-pressure Ps; calculating the predicted oil temperature Tkcal of the compressor based on the compression ratio Px, discharge temperature Tp, and low-pressure Ps; calculating the difference ΔT between the predicted oil temperature Tkcal and the fluid temperature Tk, and comparing the difference ΔT with preset dynamic parameters; and determining whether the compressor's oil level is qualified based on the comparison result of the difference ΔT and the dynamic parameters. The control method of this application is simple, convenient, reduces manual intervention, and has high accuracy.

The utility model relates to the technical field of sterilization, and discloses a sterilization device for dairy product production, which comprises a shell, two electric push rods are fixedly connected in the shell, the bottoms of the two electric push rods are fixedly connected with the same scraping block, the top of the shell is fixedly connected with a motor, and the motor is fixedly connected with a motor. A motor is fixedly connected to the bottom of the shell, a vertical shaft is fixedly connected to the bottom of the motor, a plurality of stirring rods are fixedly connected to the outer side of the vertical shaft, two scraping rods are fixedly connected to the bottom of the vertical shaft, and a heating pipe is fixedly connected to the interior of the shell. The sterilization device for dairy product production has the advantages of being low in use cost, clean in discharging and the like, and solves the problems that when the sterilization device is used, most existing sterilization devices do not have a wall scraping function, so that the inner walls of the sterilization devices adhere to a large number of dairy products when the dairy products are discharged after sterilization is completed, and then the dairy products are wasted; and the use cost of the sterilization device is increased.

This utility model relates to the field of drinking water equipment technology, and discloses a water circuit board assembly and drinking water equipment. The water circuit board assembly includes: a lower water circuit board for installing the cooling component and the heating element, and connecting the water tank and the heating element through the lower water circuit board; a water tank water circuit board, integrated into and connected to the water tank, and installed and connected above the cooling component; the water tank water circuit board is connected to the heating element. The lower water circuit board and the water tank water circuit board provided by this utility model adopt integrated water circuit board module and modular design respectively, which not only improves the system sealing and stability of the drinking water equipment, but also simplifies the assembly process of the drinking water equipment and improves the production efficiency of the drinking water equipment. Furthermore, the modular design of the drinking water equipment makes maintenance and upgrades more convenient, and also solves the problems of odor, complex assembly, and low safety caused by messy pipelines in traditional drinking water equipment using silicone tubing.

This invention discloses a wax microsphere forming device and its forming process. The wax microsphere forming device includes a wax liquid storage device, a microsphere nozzle assembly, a microsphere tower, and a fluidization device. The microsphere nozzle assembly is located above and connected to the microsphere tower, and the fluidization device is located below and connected to the microsphere tower. The wax liquid storage device is connected to the microsphere nozzle assembly via a wax liquid pipeline. This invention, by employing a reliable microsphere nozzle assembly and fluidization device, and using a relatively small-sized microsphere tower, not only achieves the production of wax microspheres but also produces wax microspheres with a narrow particle size distribution, high production efficiency, low equipment investment, and a green and environmentally friendly process.

The invention discloses a constant-temperature fusion covering forming mechanism for granular resin 3D printing, and relates to the technical field of granular resin 3D printing, the constant-temperature fusion covering forming mechanism comprises a built-in frame and a third servo motor, auxiliary assemblies used for assisting feeding are arranged on the two sides of the interior of the built-in frame, and each auxiliary assembly comprises an auxiliary frame, a second hydraulic rod, a built-in plate, a material guide frame and a material guide pipe; a second hydraulic rod is arranged in the auxiliary frame. According to the constant-temperature cladding forming mechanism for granular resin 3D printing, the dual-heating design is adopted through the auxiliary assembly, heating wires in a material guiding frame and an auxiliary frame are matched with an S-shaped material guiding pipe, granular resin is fully preheated, the melting temperature is kept stable through a heat preservation layer outside a material barrel, and the situation that the forming quality is affected by temperature fluctuation is avoided; the two sets of built-in plates improve the feeding efficiency, meanwhile, a fault auxiliary discharging function is achieved, the hollow structure of the auxiliary frame and the design of a threaded cover are convenient to maintain, the phenomena of material blocking and material breaking are effectively reduced, and the printing efficiency and stability are improved.

The application provides a gas heat exchanger, which comprises a metal pipe, a flange and a heat exchange assembly; the metal pipe is provided with a gas passing channel; the flange is used for connecting external gas pipelines; the heat exchange assembly comprises a water inlet pipe, a first collecting pipe, a plurality of branch water pipes, a second collecting pipe, a water outlet pipe and a plurality of heat exchange fins; the water inlet pipe, the first collecting pipe, the plurality of branch water pipes, the second collecting pipe and the water outlet pipe are sequentially communicated; the plurality of heat exchange fins are connected to the plurality of branch water pipes and perform heat exchange with the plurality of branch water pipes; the plurality of heat exchange fins are located in the gas passing channel of the metal pipe; gaps are arranged between the plurality of heat exchange fins, the gaps are used for allowing gas in the gas passing channel to pass through, the gas passes through the plurality of heat exchange fins and performs heat exchange with the plurality of heat exchange fins, the metal pipe is fully utilized, air flows through the gaps between the plurality of heat exchange fins, so that fin heat exchange is realized, the heat exchange coefficient is significantly higher than that of light pipe heat exchange, and the heat exchange effect of the gas heat exchanger is improved.

This utility model relates to a solidification mold for aero-engine blades, comprising a blade shell membrane, a base plate, a pouring head, a sprue, a runner, and a heat insulation plate. The heat insulation plate includes an inner heat insulation plate and an outer heat insulation plate. The outer edge of the inner heat insulation plate has multiple evenly distributed notches (I). The outer heat insulation plate has a fan-shaped structure with notches (II) on its inner side. Notches (I) and (II) form a channel with the same cross-section as the blade shell membrane. The outer heat insulation plate is detachably installed on the outside of the inner heat insulation plate. This utility model, through the combined design of the inner and outer heat insulation plates and the ingenious cooperation of notches (I) and (II), forms a channel that perfectly fits the cross-section of the blade shell membrane. This design significantly reduces the gap between the blade shell membrane and the heat insulation plate, improves the heat insulation effect, effectively prevents heat exchange at the gap, and achieves a higher and more stable temperature gradient. The detachable connection between the inner and outer heat insulation plates provides convenience for the placement and removal of the blade shell membrane.

The utility model relates to the technical field of ventilation, and provides a green low-carbon air pipe and outer wall air port mounting structure which comprises an outer wall provided with an air port, shutters mounted in the air port and an air pipe arranged indoors and communicated with the air port. The shutter is installed at the position, close to the outdoor space, of the air opening, a hollow fixing frame is installed at the position, close to the indoor space, of the air opening, the fixing frame is provided with a clamping groove, and the space between the connecting position of the shutter and the air opening and the fixing frame is filled with heat insulation materials. The end, close to the air opening, of the air pipe is provided with a skirt edge which is folded outwards, and the skirt edge of the air pipe is connected into the clamping groove in a clamped mode. The hollow fixing frame is arranged in the tuyere, the skirt edge of the air pipe is clamped in the clamping groove of the fixing frame, and the air pipe is movably connected with the tuyere, so that the noise of the air pipe can be reduced, the sealing performance of the joint of the air pipe and the tuyere is ensured, the heat bridge breaking effect of the air pipe and the tuyere can be improved, and in addition, the air pipe is also convenient to disassemble and assemble.

The invention belongs to the technical field of distillation, and discloses negative pressure energy-saving distillation equipment which comprises a working frame, a square box is fixedly connected to the bottom of the inner wall of the working frame, bearing blocks are fixedly connected to the two sides of the square box, and a wine storage tank is fixedly connected to the bottom of the inner wall, close to the square box, of the working frame. Liquid is input into the distillation tower through a feeding butterfly valve pipe, an annular heating piece is driven and distills the liquid deposited on the top of an inverted cone bearing plate, meanwhile, in the process of starting a vacuum pump, valves of the feeding butterfly valve pipe and a first butterfly valve pipe are controlled, so that the interior of the distillation tower is in a sealed space, and the vacuum pump generates negative pressure; the gas flow in the distillation tower is extracted through the bent pipe, and the pressure in the distillation tower is reduced, so that the boiling point of liquid is reduced, and components in the liquid are separated at a relatively low temperature, thereby not only saving energy, but also protecting heat-sensitive substances and avoiding degradation or loss caused by high temperature.

The utility model relates to battery technical field discloses battery pack and electrical equipment, cooling device includes: transfusion subassembly, including liquid inlet pipe and liquid outlet pipe, a plurality of cooling components, cooling component includes heat exchange part and connecting seat, and the inside of heat exchange part has the cooling channel for the circulation of cooling liquid, and connecting seat has liquid inlet part and liquid outlet part, and at least one connecting seat still has input part, and at least another connecting seat still has output part, and liquid inlet part communicates with the liquid inlet of cooling channel, and liquid outlet part communicates with the liquid outlet of cooling channel, and liquid inlet part communicates with liquid inlet pipe through input part, and liquid outlet part communicates with liquid outlet pipe through output part, and electric core, the utility model will liquid inlet part, liquid outlet part, input part and output part be integrated to corresponding connecting seat respectively, and through single component can realize multiple connection functions simultaneously, and heat exchange part can be connected with adjacent heat exchange part or corresponding pipeline through a connecting seat, can reduce the quantity of connecting structure, and the structure is simplified also reduced the risk of liquid leakage.

The utility model relates to the technical field of plastic bag production, and provides a plastic bag production dry type compound machine convenient to clean, disassemble and assemble, the plastic bag production dry type compound machine comprises an upper machine body and a lower machine body, the upper machine body is movably connected with the lower machine body, and a plurality of upper transmission cylinders are installed in the upper machine body; the upper transmission cylinders are connected with an upper transmission motor, a pressing plate is arranged in the portion, between the upper transmission cylinders, of the upper machine body, a plurality of connecting blocks are installed on the top of the upper machine body, the tops of the connecting blocks are connected with the telescopic end of a lifting air cylinder, the fixed end of the lifting air cylinder is connected with the bottom of a movable plate, and the top of the movable plate is connected with a plurality of sliding blocks. The sliding block is slidably connected with a movable sliding rail, and the two ends of the movable sliding rail are connected with the top of the first supporting plate and the top of the second supporting plate correspondingly. The technical problem that in the prior art, an operator cannot conveniently clean the interior of a machine is solved.

The utility model relates to the technical field of refrigerator defrosting water drainage, in particular to a drainage assembly and a refrigerator. The drainage assembly comprises a drainage pipe, a water pan and a connecting pipe, the drainage pipe is used for being connected and sealed with a refrigerator inner container, and defrosting water in the refrigerator inner container can be drained through the drainage pipe; the water receiving disc is used for receiving externally-discharged defrosting water, a fixing pipe is arranged on the water receiving disc, and a water discharging opening is formed in the fixing pipe; the connecting pipe is connected and sealed with the drainage pipe, the connecting pipe is provided with a water storage part and an inserting part, the inserting part is contained in the fixing pipe and is in clearance fit with the pipe wall of the fixing pipe so as to form a water seal cavity, and the water seal cavity is formed in the lower position of the drainage port in the vertical direction and is communicated with the drainage port. Through the arrangement of a water sealing structure, discharging of defrosting water can be guaranteed, internal and external air pressure can be balanced, and external humid and hot air can be effectively blocked.