2821results about How to "Solve the cooling problem" patented technology

A light-emitting-diode (LED) lamp includes a control circuit board having a control circuit and a plurality of insertion holes provided thereon; a plurality of LED units, each of which including a circuit board, a plurality of LEDs mounted on the circuit board, and terminals provided at an end of the circuit board for plugging into the insertion holes on the control circuit board to thereby electrically assemble the LED unit to the control circuit board; and a glass bulb or tube for receiving the assembled control circuit board and LED units to complete the LED lamp that can be mounted to a general lamp holder. When electricity is supplied to the LED lamp, the LEDs are driven by the control circuit to emit light for illumination. The number of LED units and of the LEDs may be adjusted according to desired illuminance.

The invention discloses graphene heat radiation paint. The graphene heat radiation paint comprises the following ingredients, by weight, 40-80 parts of high-molecular resin, 5-15 parts of graphene, 1-8 parts of one-dimensional nanomaterials, 1-8 parts of heat conduction metal powder, 0.5-5 parts of dispersing agents, 0.5-5 parts of antifoaming agents and 100-200 parts of inert solvent. The heat conduction metal powder is at least one selected from silver powder, copper powder and aluminum powder and the granularity is 1-20 micrometers. The above paint has good heat radiation and heat conduction functions. The invention also discloses a preparation method for the graphene heat radiation paint. The preparation method mainly comprises processes of stirring, grinding and reblending. Operation is simple, and the cost is low. The graphene heat radiation paint is mainly applied in heat radiation of daily electronic products and also can be applied in spaceflight electronic devices with high requirements because of good heat conduction and heat radiation functions.

The invention discloses a microwave ablation needle and a microwave ablation therapeutic apparatus thereof, and relates to a structure of the microwave ablation needle and the microwave ablation therapeutic apparatus using the microwave ablation needle. The microwave ablation needle mainly comprises an ablation needle, an ablation needle tube, a microwave coaxial cable, a capillary, a handle with a crank, a temperature sensor, a fixed frame, a high-frequency joint and a water cavity, wherein the fixed frame comprises the high-frequency joint, a water inlet joint, a water outlet joint and the temperature sensor and is connected with a terminal external socket; the high-frequency joint comprises a lock card reed; and the water cavity used for circulating cold water is arranged in the handle. The circulating water enters the capillary from the water inlet joint, then enters the water cavity from the ablation needle tube, and finally flows out from the water outlet joint. The microwave energy enters the microwave coaxial cable from the high-frequency joint, and radiates through the ablation needle. The microwave ablation needle, a microwave power source and a computer control unit form the microwave ablation therapeutic apparatus. The microwave ablation needle and the microwave ablation therapeutic apparatus are mainly used for treating tumor through microwave ablation.

The invention relates to a cooling water channel structure for a motor casing, comprising an inner motor casing and an outer motor casing, wherein the outer motor casing is hermetically sleeved on the inner motor casing so as to form a cooling channel between the inner motor casing and the outer motor casing, the outer motor casing is provided with a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet is communicated with the cooling liquid outlet through the cooling channel, and preferably, the cooling channel is provided with a plurality of reinforcing ribs so as to guide the flow direction of a cooling liquid; and the cooling water channel structure for the motor casing further comprises a first sealing ring, a second sealing ring, a stopping and limiting part, a cooling liquid source and a power source, wherein the first sealing ring and the second sealing ring are used for sealing the outer motor casing and the inner motor casing, and the stopping and limiting part is arranged on the inner motor casing and used for stopping and limiting the outer motor casing. The cooling water channel structure for the motor casing in the invention has the characteristics of skillful structural design as well as simple and novel structure, can rapidly radiate heat for a motor so as to solve the problem on motor heat radiation, improve motor performance and finally improve the efficiency and prolong the service life of the motor, and is suitable for large-scale popularization and application.

The invention relates to a glass coating containing a fluorophor and a method for producing the glass coating, and a light-emitting device containing the glass coating and a method for manufacturing the light-emitting device. The method for producing the glass coating containing the fluorophor comprises the following steps of: (1) mixing the powder of glass B and the powder of fluorophor C, an organic solvent and a binder in a mass ratio of 100: (1-100): 150 together into even paste; (2) evenly spreading the paste on a glass substrate A, and drying the glass substrate A coated with the paste so that the organic solvent is completely volatilized; and (3) sintering the dried glass substrate A coated with the paste, thereby obtaining the glass coating containing the fluorophor on the surface of the glass substrate A, wherein the process of sintering is as follows: increasing the temperature to temperature D1, so that the binder is decomposed and volatilized completely, and then increasing the temperature to temperature D2 so that the powder of glass B is softened and united to form a continuous glass body, thus obtaining the glass coating containing the fluorophor C on the surface of the glass substrate A.

The invention provides a manufacturing method of a high-voltage LED (Light Emitting Diode) device, which comprises the following steps of: providing a substrate, and sequentially forming an N-type limit layer, an epitaxial layer and a reflecting layer on the substrate; manufacturing at least one isolation trench on the substrate so as to isolate at least two regions on the substrate, and manufacturing a plurality of uniformly-distributed N-type through holes in each region; depositing insulation layers on the inner surfaces, except for bottoms, of the N-type through holes and the isolation trench and the surface of a part of reflection layer; depositing metal to form conductive bolts in the N-type through holes, forming a positive electrode conductive bump on the exposed partial reflection layer, and forming negative electrode conductive bumps which are connected with the conductive bolts in the single region, so as to form LED modules; and packaging one or more LED module(s) and a functional chip to form a high-voltage LED device. The invention also provides the high-voltage LED device, and the problems of current density local crowding effect and heat dissipation of a power-typechip are solved.

The invention provides an electric automobile cooling system, comprising an electric water pump (1), an electric machine controller (MCU) (2), an electric machine (3), a radiator (5), a fan (4), an expansion tank and hose (6); wherein the electric machine (3) and the electric machine controller (2) are arranged in the front cabin of the electric automobile. The electric water pump (1), electric machine controller (2), electric machine (3) and the hose for the radiator (5) are connected with each other to form a cooling circuit; the fan is arranged at the back part of the radiator and the headwind and the cold air driven by the fan exchange heat with the radiator. When one of the electric machine temperature and the electric machine controller temperature achieves the preset value, the cooling system starts to work. When the two temperatures are lower than the preset value, the cooling system stops to work. Therefore the service life of the electric water pump is prolonged and the reliability of the cooling system is increased.

The invention discloses a solar energy comprehensive utilization apparatus that comprises a photovoltaic generating assembly, a temperature difference generating assembly, and a cooling device. The photovoltaic generating assembly receives solar radiation and converts solar energy into electric energy. The temperature difference generating assembly, which is arranged at a backlight side of the photovoltaic generating assembly, is used for converting heat energy that is from the photovoltaic generating assembly into electric energy; besides, the temperature difference assembly includes a hot end and a cold end that is at an opposite side of the hot end, wherein the hot end is contacted with the backlight side of the photovoltaic generating assembly. The cooling device, which contains fluid medium, is arranged at one side of the temperature difference generating assembly and is contacted with the cold end of the temperature difference generating assembly; moreover, the cooling device enables the cold end of the temperature difference generating assembly to be cooled by circulating the fluid medium as well as thermal fluid medium is generated for utilization. According to the invention, a modularized solar energy generating and heat recovery and utilization apparatus is established, thereby realizing high efficient solar energy generating efficiency and electric heating comprehensive utilization efficiency.

The invention provides a novel light emitting diode (LED) encapsulation structure which directly adopts a silicon dice substrate as both a surface mounting bracket and a radiation channel of an integrated structure support of an LED chip; a front electrode connecting layer is arranged on the front surface of the silicon dice substrate; the front electrode connecting layer on the front surface of the silicon dice substrate is connected with an electrode metal bonding pad at the back of the silicon dice substrate through a lead of a silicon groove side-wall or a lead of a through-hole of the silicon dice substrate; and at least one LED chip is welded directly by flip-chip on the front electrode connecting layer of the silicon dice substrate with an optical source through a metal bump. The invention also provides a method for manufacturing the LED encapsulation structure. The invention avoids steps of die bonding and gold-wire welding and enhances the connection reliability of chips and especially the connection reliability of multi-chip modules; and the invention leads the encapsulation of high-power LED and especially the encapsulation of multi-chip module to be miniaturized and also leads power-supply drive and circuits of LED protection and the like to be integrated on the silicon dice so as to provide a systematic and integrated encapsulation proposal for high-power LED illumination.

The invention discloses an air and water hybrid cooling high-speed permanent-magnet motor and belongs to the technical field of motors. The large-power high-speed permanent-magnet motor comprises a casing, a cooling water jacket, a stator core, a stator radial air duct, a stator inner air duct, a motor rotor, an outer rotor axial fan, an outer rotor fan fixing frame and two sliding bearings. The stator core is divided into two sections, the radial air duct is reserved in the middle, and the inner air duct is reserved in a stator slot close to the air gap position. The cooling water jacket is arranged outside the stator casing, a spiral water way is arranged in the water jacket, and water flows into the water way from the middle of the water way and flows out from a left spiral water outlet and a right spiral water outlet which are arranged at two ends of the water way. The air and water hybrid cooling high-speed permanent-magnet motor can mechanically solve the problem that a permanent magnet is broken when bearing large pulling stress during high-speed rotating, further solves the problems that the large-power high-speed motor is large in loss density, difficult in heat dissipation and over high in temperature rising, and prevents the permanent magnet from having irreversible demagnetization easily at high temperature.

The embodiment of the invention discloses a wavelength converter and a light-emitting device. The wavelength converter comprises a wavelength conversion layer for receiving exciting light and producing excited light, a driving device for driving the wavelength conversion layer to make periodical motion, a box for sealing the wavelength conversion layer and the driving device and comprising a first area for transmitting the exciting light to the wavelength conversion layer and a second area for transmitting the excited light, (and) an external fan arranged outside the box and used for cooling the box, and / or an external radiator arranged on the external surface of the box. According to the embodiment of the invention, the dustproof and radiating of a color wheel in the prior art are realized.

The invention relates to the technical field of lighting lamps, in particular to an LED lamp bulb which comprises a lamp holder, a lamp shade, an LED and a circuit board, wherein the bottom end of the lamp shade is installed and fixed at the top end of the lamp holder; the circuit board is installed and fixed inside the lamp shade and electrically connected with the lamp holder; and the interior of the lamp shade is filled with mixed gas used for conducting heat generated by the LED to the exterior of the lamp bulb. As the heat generated by the LED is emitted by the mixed gas, the LED lamp bulb has the characteristics of light weight, small volume and low production cost; in addition, the mixed gas is used as the medium of heat transmission, therefore the LED lamp bulb can quickly emit the heat generated by the LED to the exterior of the lamp bulb, with fast heat dissipation speed, thus effectively resolving the heat dissipation problem of the LED and prolonging the service life of the LED.

The invention relates to a high-power optical fiber transmission system. The high-power optical fiber transmission system comprises a laser transmission optical fiber, an end cap, a cladding stripper, a shell, a beam shaping device and a laser protection window. The high-power optical fiber transmission system is characterized in that the laser transmission optical fiber is connected with the end cap in a welding mode, the cladding of the laser transmission optical fiber is combined with the cladding stripper, the end cap, the laser transmission optical fiber, the cladding stripper and the beam shaping device are all fixed in the shell, the laser protection window is fixed on the shell, the beam shaping device and the laser protection window are arranged at the front end of the end cap, a water cooling channel is formed in the shell, and the cladding stripper and one section of the laser transmission optical fiber are arranged in the water cooling channel. According to the high-power optical fiber transmission system, the cladding of the transmission optical fiber is combined with the cladding stripper, the cladding stripper, the transmission optical fiber and the end cap are arranged in the water cooling channel, radiating and cladding stripping of the high-power optical fiber transmission system are achieved, and reliability and long-term stability of devices are improved.

The invention relates to the technical field of flat panel display, and provides a backlight module and a liquid crystal display device. The backlight module comprises a light source module, an optical panel and an optical module, wherein the light source module can emit blue light, the optical module is arranged above the optical panel, and the optical panel is provided with a ZnSe: Mn quantum dot nano material which can be excited to produce white light by the blue light. In the invention, a blue-light LED (light-emitting diode) is adopted for exciting the ZnSe: Mn quantum dot nano material, and compared with the existing fluorescent powder, the quantum dot nano material has various advantages such as controllable particle size, uniform dispersion, high and stable excited conversion efficiency, and high lighting effect; and a chip and an exciting material are separated, so that the temperatures of the two are effectively reduced, and the heat dissipation problem of LED driving is solved.

The invention relates to a light-emitting diode (LED) chip and a manufacturing method thereof. Materials with high heat conductivity are used as a support substrate of the LED chip, and the support substrate is sequentially provided with a bonding material layer, a reflecting layer, a transparent electrode layer, an epitaxial layer and an n-surface electrode. The manufacturing method comprises the following steps of: coating a transparent conducting layer on a sapphire substrate GaN epitaxial wafer by vaporization; coating the reflecting layer on the conducting layer by vaporization; spreading the bonding material layer on the reflecting layer, and bonding the sapphire substrate GaN epitaxial wafer to the substrate; removing the sapphire substrate by combining mechanical grinding, chemical mechanical polishing and wet-method corrosion; etching an n-GaN, an active layer and a p-GaN by using inductively coupled plasmas, removing the undoped GaN layer by etching with a potassium hydroxide solution, and coarsening the surface of the n-GaN; and coating the n-surface electrode to the n-GaN layer by vaporization to form an ohmic contact. The invention avoids the damage to the GaN-based LED epitaxial layer and the bonding layer caused by the stripping of the sapphire substrate by using laser, and the heat radiation efficiency is improved by using the substrate with high heat conductivity.

The invention discloses a liquid cooling temperature control and management method of a power lithium ion battery. The liquid cooling temperature control and management method comprises the steps of: 1) acquiring temperature and current; 2) obtaining a highest temperature value, a lowest temperature value, greatest temperature difference and liquid cooling system inlet and outlet temperature difference; 3) judging whether the current is large or not and computing a working state 1; 4) judging whether the temperature of the battery is high or not, computing a working state 2; 5) judging whether temperature difference of the battery is too great or not and computing a working state 3; 6) judging whether the outlet temperature of a battery pack is too high or not and computing a working state 4; 7) judging whether the temperature difference of circulating medium at the inlet and outlet of the battery pack is too great or not and computing a working state 5; and 8) comparing the computed working state 1, the working state 2, the working state 3, the working state 4 and the working state 5 to obtain a working state with the best heat dissipation effect for setting. The liquid cooling temperature control and management method of the power lithium ion battery solves the problems that the temperature of the battery is too high and the local temperature difference is too great, and has the beneficial effects that the performance of the battery is improved and the service life of battery is prolonged.

The invention provides a light emitting diode (LED) chip structure and a manufacture method thereof. Prior to manufacturing the traditional electrode structure, partial perforation is carried out on the well grown epitaxial structures by the method of wet etching or dry etching to cause the N-shaped gallium nitride layer to expose; meanwhile, the size and layout of the apertures are arranged reasonably according to the requirements of heat dissipation and current distribution. On the premise of ensuring good heat dissipation, the technical proposal provides more light-emitting surface so that light can be emitted from the lateral surface and the top surface simultaneously. At the same time, the current is distributed more evenly and reasonably owing to good current distribution design. The design not only can be used for common luminescence chips but also is especially suitable for power LED chip structures with high current. The technology mentioned in the invention fundamentally improves the heat dissipation and light emitting efficiency and the improved required technique is simple and efficient and does not need extra processing equipment and materials.

The invention discloses a thermal management system for low temperature starting of a fuel cell power generation system and a method thereof. The thermal management system comprises an internal circulating heating system and an external circulating cooling system. The internal circulating heating system is composed of a fuel cell stack, a fuel cell stack cooling liquid outlet sensor, an outlet tee, a water tank, a heater, an internal circulation pump, an internal circulation one-way valve, an inlet tee, and a fuel cell stack cooling liquid inlet sensor. And the external circulating cooling system consists of the fuel cell stack, the fuel cell stack cooling liquid outlet sensor, the outlet tee, the water tank, an external circulation pump, a radiator, an external circulation one-way valve, the inlet tee, and the fuel cell stack cooling liquid inlet sensor. By adding an internal circulating heating system, the system of the invention solves the heat radiation problem of the fuel cell stack, and simultaneously can rapidly raise the temperature of the fuel cell stack, which can be always maintained in an optimal working temperature range. Thus, the performance of the fuel cell can be maintained in a most stable state, and the service life can be prolonged.

The invention relates to a high-brightness excitation method and a light emitting device based on optical wavelength conversion. The method comprises the following steps: two surfaces of lamellar-distributed optical wavelength conversion materials respectively receive the excitation of first excitation light and second excitation light at two sides of the optical wavelength conversion materials, and excited light is generated; the first excitation light is the excitation light which is emitted by a solid light emitting chip array which is composed of a solid light emitting chip or a pluralityof solid light emitting chips; the second excitation light is guided by a first light splitting and filtering device which is positioned at the other side of the optical wavelength conversion materials and is emitted in the optical wavelength conversion materials; and the excited light is guided by the first light splitting and filtering device and is split into outgoing light from the light pathof the second excitation light. The two surfaces of the optical conversion materials are excited simultaneously, the excitation light and the excited light are guided by adopting the corresponding light splitting and filtering device, the heat radiation issue is solved through tightly clinging a transparent heat conduction substrate or an LED (light emitting diode) chip to the optical wavelength conversion materials, and the high-brightness high-power light output of the light emitting device is realized.

The invention relates to a refrigerator having multiple temperature zones. A refrigerating chamber is located at the upper half part of a refrigerator body of the refrigerator; a freezing chamber and a variable temperature chamber are located at the lower half part of the refrigerator; a condensation section pipeline of a hot-end gravity heat pipe is upwards arranged on the inner side of the left wall surface of a casing of the refrigerator; evaporation section pipelines of a cold-end gravity heat pipe are downwards arranged on the back wall surface and left and right wall surfaces inside the variable temperature chamber; a condensation section of the cold-end gravity heat pipe is connected with a cold end of a free-piston Stirling cooler by the aid of a cold conduction copper sleeve; and an evaporation section of the hot-end gravity heat pipe is connected with a hot end of the free-piston Stirling cooler by the aid of a heat conduction copper sleeve. The free-piston Stirling cooler has the characteristics of wide cooling temperature zone, compact structure, high low-temperature cooling efficiency and the like and enables the variable temperature chamber to realize the lowest temperature of subzero 60 DEG C through combination with the advantages of high heat transfer efficiency and simple structure of the gravity heat pipes. According to the novel refrigerator having the multiple temperature zones, different cooling temperatures inside the refrigerator can be accurately controlled through adjustment of the working frequency of a variable frequency compressor and the input voltage of the free-piston Stirling cooler.

The invention provides a dual-rotor wheel hub motor for a four-wheel drive electric automobile and a power transmission method of the dual-rotor wheel hub motor. The dual-rotor wheel hub motor comprises a planetary gear mechanism and a motor group formed by an inner motor and an outer motor. The motor group and the planetary gear mechanism are connected via a clutch and are arranged in a machine shell. The outer motor is formed by an outer rotor and a stator outer winding, and the inner motor is formed by an inner rotor and a stator inner winding. The planetary gear mechanism is composed of a gear ring, an output shaft, a sun wheel, a planet wheel and a planet carrier. The dual-rotor motor could achieve torque coupling, rotational speed coupling and speed differing by combining with the planetary gear mechanism, so that different vehicle condition requirements could be met under the condition that the motor with relative small power is selected, thereby reducing automobile arrangement space and cost. As the dual-rotor wheel hub motor has a single motor braking mode and a dual-motor braking mode, the braking energy can be effectively recovered, slow braking can be achieved, and the braking stability of the motor is improved.

The embodiment of the invention relates to the field of electronic equipment and provides an embedded circuit board radiating device and a processing method of an element. The outer surface of an element cavity is provided with a cooling tank, heat pipes are laid in the cooling tank or the cooling tank forms a seal pipeline which can accommodate circulating liquid, and the element is radiated by the heat pipes or the heat of the element is brought away by the circulating liquid. The invention furthest improves the radiating efficiency and solves the radiating problem of the embedded element and the embedded circuit board of the element.

The present invention provides a permanent magnet synchronous motor, belonging to the technical field of motors. The permanent magnet synchronous motor is characterized by: adoption of a solid shuttle-shaped rotor structure; a large radial air gap and an axial non-constant air gap; a permanent magnet adopting a radial buried structure; a starting squirrel cage embedded on the rotor; and the rotor and a stator both provided with corresponding ventilation ducts that facilitate cooling air which passes through the large radial air gap to take away heat of the surface of the solid rotor and heat of the stator itself. The permanent magnet synchronous motor in the invention not only solves a problem of starting difficulty in a permanent magnet motor having a conventional laminated rotor, but also solves a problem of heat dissipation difficulty in a permanent magnet motor having a conventional solid rotor. The permanent magnet synchronous motor in the invention with a starting torque from 2.0 to 3.0 further overcomes a problem of easy demagnetization of the permanent magnet caused by a too high temperature of the rotor.

The invention relates to a process for preparing a luminescent diode which is directly and inversely installed in a support, in a support, a single chip or a plurality of chips are directly and inversely installed on the support through metallic salient points. The method saves the steps of fixing a wafer by a chip and bonding by a gold wire, thereby the manufacturing cost is reduced, and the manufacturing efficiency is improved, the heat resistance is reduced, and the heat dissipating problem of a power type chip is solved, the light trapping problem of a bonding pad and a lead wire during the packing of a small size LED is solved, and the luminous efficiency of the LED is greatly improved, the more miniaturization of the packing size of the LED is realized, and the increased requirements of the market to the miniaturization packing are satisfied.

The LED with thermal channel adhesive layer is characterized in that, forming metal bulge on adhesive layer that combines base plate and LED stack, or the semiconductor bulge penetrates adhesive layer, both to form heat dispersion channel to increase heat dispersion effect and improve stability and efficiency; wherein, the said LED at least comprises a said plate, a insulating layer, a LED stack formed on insulating layer, and a said adhesive layer.

The invention discloses a power battery composite heat management system and a method thereof. The power battery composite heat management system comprises a water tank filled with a circulating fluid, a circulating pump, a sealing cover plate of the water tank, and a battery pack array which is fixedly mounted above the sealing cover plate and is composed of a plurality of battery cells, wherein a temperature equalizing plate and a heat pipe are adhered onto the surface of each battery cell respectively, and cooing sections of the heat pipes pass through the sealing cover plate to be arranged in the circulating fluid in the water tank; a circulating fluid inlet is formed in one side end of the water tank, a circulating fluid outlet is formed in the other side end of the water tank, and a circulating fluid turbulent flow structure is arranged inside the water tank, so that the circulating fluid flows into the circulating fluid outlet from the circulating fluid inlet of the water tank in a curve flowing manner. The system and the method thereof can solve the technical problems such as heat dissipation, battery pack temperature difference reduction, battery preheating and heat cyclic utilization under different working conditions of batteries; and meanwhile, the system is compact and simple in structure and convenient in installation and maintenance, accords with the development tendency of battery heat management systems and electric automobiles, and has good application prospects.

The invention discloses a speed regulation method for a fan. Wherein, acquiring the lowest and highest rotation speed of fan as well as opposite chip temperature to determine the variation relation between speed and temperature; when need, obtaining current chip temperature to determine fan rotation speed according to said relation. It also discloses a fan combination, which comprises a single board with chip, a heat sink on chip, a fan fixed on said sink, and a temperature sensor on said board. This invention not only solves heat dissipation problem of board well, but also overcomes the noise and dust difficulty.

The invention discloses an immersed-type packaged LED light source with high power, comprising an LED chip, a packaging substrate, cooling fluid, an optical window component, a shell and a radiator. The radiator is provided with the shell and the packaging substrate which is provided with the LED chip, the top of the shell is provided with the optical window component, and the cooling fluid is filled in the shell. The LED chip is arranged on the packaging substrate which is arranged on the radiator, and the LED chip and the packaging substrate are immersed in the cooling fluid, and the cooling fluid is enclosed in a negative pressure airtight space which is formed by the optical window component, the shell and the radiator to form condensation and evaporation circulation. Light generated by the LED chip is emitted from the optical window component, and heat energy is transmitted to a sealing component and the radiator to be dispersed, thereby effectively solving the problems of heat radiation and light intensity output of the LED light source with high power.

The invention relates to a split type one-to-two Stirling refrigerating variable temperature zone refrigerator. Two variable temperature chambers are arranged in a refrigerator body of the refrigerator. The top of the refrigerator body of the refrigerator is provided with a refrigerator body top space. A refrigerating system is arranged in the refrigerator body top space. A linear compressor of the refrigerating system is connected with two pneumatic expansion machines through a gas supply pipe. The two pneumatic expansion machines are connected with pulsating heat pipes in the two variable temperature chambers correspondingly. An adjusting valve is arranged on the gas supply pipe. The refrigerator adopts the process that the linear compressor drives the two pneumatic expansion machines, the adjusting valve is mounted on an inlet pipeline of one pneumatic expansion machine, and thus the refrigerating temperature and refrigerating capacity of the two pneumatic expansion machines can be effectively adjusted. According to the split type one-to-two Stirling refrigerating variable temperature zone refrigerator, the adjusting valve of the pneumatic expansion machines and the input voltage of the linear compressor can be adjusted through a controller, the refrigerating temperatures of the two different variable temperature chambers in the refrigerator are controlled independently, and thus the temperature in the refrigerator body of the refrigerator can be controlled at -40-7 DEG C in a high-precision mode.

The invention discloses an automated Congou black tea production process, which includes a staged dynamic withering technique, a continuous and progressive pressure rolling technique, a high-speed rotational deblocking technique, a variable-temperature dynamic fermentation technique, a microwave tempering and dehydration technique and the like; the staged dynamic withering technique is carried out by four automatic vertical withering machines, the continuous and progressive pressure rolling technique is carried out by six 65 model automatic rolling machines, the high-speed rotational deblocking technique is carried out by a high-speed rotating roller type deblocking machine, the fermentation temperatures of different stages are controlled by an automatic fermentation machine in the variable-temperature dynamic fermentation technique, and on-line tempering is carried out by a microwave tempering machine in the microwave tempering and dehydration technique. The automatic vertical withering machines, the automatic rolling machines, the high-speed rotating roller type deblocking machine, the automatic fermentation machine, the microwave tempering machine, two automatic driers and other equipment are connected through a production line and adopt an automatic control system, consequently, Congou black tea processing realizes automated, continuous and clean production, the quality and sanitary quality of the tea are increased, and the working efficiency is remarkably increased.