635results about How to "Evenly heated" patented technology

The invention discloses a lithium ion battery pack charge heating system and a lithium ion battery pack charge heating method, which are provided aiming at the problem of low-temperature heating of a lithium ion battery pack. According to the method, a heating mode adopted during the low-temperature charging of the lithium ion battery pack is that the interior and the exterior of a battery pack are simultaneously heated through discharge of the battery pack and simultaneous work of an external heating device, so that the heating efficiency is high and the heating time is short. The SOC (State of Charge) lost due to discharge is replenished through work of a charge loop; and data such as charge and discharge time, charge and discharge current, temperature and SOC in an entire process are acquired, monitored, processed and the like by a battery management system.

The invention relates to a technique method for producing lithium iron phosphate material in a vacuum rotary kiln. The invention relates to the industrial manufacturing of lithium ion battery cathode material, which is characterized in that: a continuous vacuum rotary kiln is adopted to sinter and produce lithium iron phosphate material, which realizes dynamic sintering. The invention solves the difficulties of material overburning, underburning, etc. appeared in static sintering in atmosphere protection pusher kiln, pit type furnace, etc. The rotary kiln comprises a screw-feeder, a hopper, a feeding bin, an inlet bin, a rotary barrel body, a receiving bin, a discharging bin, a furnace body, an air inlet, an air outlet and pumping port, a large gear outside the barrel body, a drive gear engaged with the large gear and a roller, etc. The material is continuously fed and discharged. Spiricle is arranged in the barrel body of the rotary kiln and the material goes forward sequentially in the barrel body. The furnace body of the outside furnace of a rotary furnace is sealed, the air is vacuumized and protection atmosphere is input. The technique line is burdening, mechanical strength grinding, mixing, milling and crushing, pressing pill, sintering in the vacuum rotary kiln, mechanical strength grinding, ball grinding, coating, conductive carbon, testing and packing. The lithium iron phosphate material produced by the invention has low energy consumption, high efficiency and good product quality.

The invention relates to a circulating fluid bed boiler furnace with water-cooled posts, which is characterized in that: the water-cooled posts arranged in the boiler furnace are able to provide enough heating area; meanwhile, enough space is left between posts for mixing materials at lower section of the boiler furnace, so as to ensure the concentration, temperature and the evenness of heat transfer; the heating status of the heat face of the water-cooled posts and the wall around the boiler furnace are similar, which is particularly beneficial for enhancing the hydrodynamic force safety of supercritical circulating fluidized bed boiler furnace. The water-cooled posts are able to be internally provided with dusts being able to through with secondary winds at the central area of the boiler furnace. The invention arranges the vertical water-cooled posts encircled by film walls between boiler furnace grid plate and a ceiling and working substance are provided from up to down in the film wall pipe; the external side of the water-cooled post faces to the burning space of the boiler furnace.

The invention discloses a forward and reverse rotation drum type grain drying device which comprises a base, a drying cylinder, a motor and an air heater. According to the forward and reverse rotation drum type grain drying device, a transmission mechanism is utilized to realize forward and reverse rotation of the drying cylinder; during the process of forward and reverse rotation, the drying cylinder can swing grain the drying cylinder to avoid grain accumulation so as to uniformly heat the grain; an air heating pipe is arranged in the center of the drying cylinder to dissipate heat from the center to the periphery so as to uniformly distribute heat of the drying cylinder, and a material turnover rod can turn over grain in the drying cylinder to further ensure that the grain is uniformly heated; in addition, the drying cylinder can do reciprocating motion left and right, so that the material turnover rod can turn over the grain in an all-around manner and the material turnover range is larger; a lantern ring with embedded balls is arranged to ensure rotating stability of the drying cylinder and does not affect left-right movement of the drying cylinder; and filtration holes are formed in the cylinder wall of the drying cylinder to effectively filter dust and impurities in the grain.

The invention relates to equipment capable of industrially implementing the entire dismantlement of a waste and old circuit board component. The equipment is characterized in that a heating groove and a vibrating table are arranged in parallel at the left and the right, an overturning arm capable of rotating left and right is arranged above the heating groove and the vibrating table and a supporting frame is fixedly connected to the overturning arm in a cantilever mode; the vibrating table is supported on a vibrating frame by a rubber damper; a vibrating screen gaze is arranged below the vibrating table towards the discharge side; a soldering flux collector is arranged at the bottom of the vibrating frame, the dismantled component is held by the vibrating screen gaze and granular solder fluxes fall into the solder flux collector through the vibrating screen gaze; a blanking rack consists of a row of support rods, a circuit board can be supported on the blanking rack, and the dismantled component and solder flux can fall off through the blanking rack; and a cover plate is linked with the blanking rack and the blanking rack and the cover plate are overturned towards the blanking side by the rotation of a blanking rotating shaft. The equipment is simple and practical and can be industrially produced.

The invention discloses an active non-contact control method of a water heater. The water heater comprises a water heater body, a multi-stage heating mode controller in the water heater body, a human body infrared induction module and a human body infrared receiving module, wherein the human body infrared receiving module is arranged on the water heater body and connected with a control circuit inside the water heater body through a wireless module or a serial port; data are transmitted between the human body infrared induction module and the human body infrared receiving module through a wireless module or a serial port, and corresponding control instructions are received through the human body infrared receiving module and transmitted to the control circuit inside the water heater body, so that the temperature of the water heater can be controlled, and not only are the safety and the comfort degree of a human body during usage of the water heater improved, but also the service life of the water heater is prolonged.

The invention discloses an efficient energy-saving electric oven for roast ducks. The oven comprises a shell, a roasting chamber and a seal cover; the oven is characterized in that the roasting chamber is formed in the shell, and a rotating motor is arranged at the upper end of the roasting chamber; a reversal motor is arranged at the lower end of the roasting chamber, and an output end of the reversal motor is fixedly connected with a third rotating shaft; heating pipes are arranged on the periphery of the roasting chamber; circulating mechanisms are symmetrically arranged on the left side and the right side of the roasting chamber in sequence, and the circulating mechanisms are composed of circulating air pipes, circulating pumps, active carbon adsorption layers and air nozzles; the seal cover is arranged at the lower end of the roasting chamber, and a water tank is arranged in the seal cover; an air outlet pipe is arranged on the left side of the seal cover, and a cooling pump is arranged on the air outlet pipe. The efficient energy-saving electric oven for the roast ducks is simple in structure and convenient to operate, the ducks conduct orbit motion and autorotation in the roasting process, so that the ducks are evenly heated, and the roasting effect is good; a hot wind current is formed in the roasting chamber by the circulating mechanisms, the roasting efficiency is improved, surplus hot gas is reused, and the resources are saved.

The invention provides an automatic wok tossing system with a fixed guide rail. The automatic wok tossing system with the fixed guide rail comprises a machine frame, the curved guide rail, a wok and a wok driving device, wherein the curved guide rail is fixed to the machine frame; the wok is provided with a swinging shaft; the wok driving device drives the swinging shaft of the wok to reciprocate along the curved guide rail, so that a wok body swings. The automatic wok tossing system with the fixed guide rail is small in size and capable of effectively realizing wok tossing. More importantly, ingredients in the wok can be prevented from always concentrating at the front end of the wok, and furthermore heat waste and fuel waste caused by insufficient use of heat of the wok are avoided. Besides, the ingredients have a sufficient move range in the wok and can be fully dispersed in the wok, thereby being evenly heated in the wok.

The invention discloses a food processor which comprises a main machine, a cup body, a cup cover and a stirring device. The main machine comprises a casing and a vapor generator arranged in the casing. The cup body is fixed on the casing in a detachable mode, the cup cover is connected with the opening end of the cup body, a vapor inlet communicated with a vapor outlet of the vapor generator is arranged in the cup cover, the stirring device is arranged in the cup body, a vapor channel with an inlet and an outlet is arranged on the stirring device, the inlet of the vapor channel is communicated with the vapor inlet, the outlet of the vapor channel is located at the bottom of the cup body, and a vapor discharging port communicated with the inner cavity of the cup body is arranged in the cup cover. The food processor has the advantage that food is heated evenly, vapor utilization efficiency is high on the food, and the food processor is high in efficiency and saves energy due to the fact that a way that the vapor flows from bottom to top to heat the food is adopted.

The invention discloses a rice process in the technical field of rice processing. The rice process comprises the steps of: impurity removal; dehumidification: paddies are paved in a drying room for drying by a hot air drying method to reach the paddy water content of 12-14%, and the hot air temperature is 35-45 DEG C; primary rice milling: the unshelling rate reaches 60-80%; attachment of water mist on the surfaces of semi-finished products by an atomization method; drying of the semi-finished products by cold air to reach the semi-finished product water content of 12-14%; secondary rice milling; polishing; and color sorting and classification. The paddies are cooled before being suffered from a mechanical effect in each link; compared with traditional airing and direct once high-temperature drying, the dehumdification process alleviates the effect of taking away water in the paddies, and is uniform in heating; compared with a traditional process, the rice process combines wetting and drying procedures, adds the wetting and drying, after wetting, steps, and uses secondary rice milling for largely reducing the rice milling rate; and the same one batch of paddies machined by the method reaches the rice milling rate of below 8%.

The invention discloses a temperature control device. The temperature control device comprises a silicon wafer carrying portion, a plurality of light heating portion, a temperature measuring portion and a temperature control portion. The silicon wafer carrying portion comprises a technical cavity, a base and a rotating mechanism, wherein the base keeps a silicon wafer horizontal, and the rotating mechanism rotates the base. The light heating portions emit light to the silicon wafer so as to form a plurality of heating areas on the surface of the silicon wafer and comprise a plurality of first linear heaters and second linear heaters, wherein the first linear heaters and the second linear heaters are parallelly distributed on the upper side and the lower side of the outside of the technical cavity and perpendicular to one another in the horizontal direction. The temperature measuring portion comprises a plurality of temperature sensors used for measuring the temperature of the heating areas and is arranged in the technical cavity at the positions corresponding to the heating areas. The temperature control portion is used for controlling the output power of the light heating portions according to the outputted temperature of the temperature sensors and the target temperature of the heating areas. The temperature control device is capable of accurately controlling quick heating and cooling of the silicon wafer and can guarantee temperature uniformity of the points inside the silicon wafer.

The invention provides a graded metal-ceramic composite containing a metal matrix and ceramic particles dispersed in the metal matrix, wherein the metal matrix is copper, aluminum or copper-aluminum alloy; the ceramic particles are boron nitride, pyrolyzed boron nitride, aluminum nitride or silicon carbide and are in graded distribution in the metal matrix along the longitudinal thickness direction, and the volume fraction is in continuous and gradient change between 10% and 60%. The invention also provides a preparation method of the graded metal-ceramic composite. The graded metal-ceramic composite provided by the invention is proper in heat conductivity and capable of realizing gradient change, and the heat conductivity of the prepared evaporation crucible is correspondingly in graded distribution from the bottom to an opening, so that an organic evaporation material placed in the crucible can be uniformly heated, and an organic film with favorable quality is formed by virtue of evaporation.

The invention relates to a sandwich precision thermal controller for a spatial optical remote sensor reflector, belongs to the technical field of thermal control of spatial optical remote sensors and solves the technical problems that the prior reflector mirror is unevenly heated and has ordinary stability and temperatures of the reflector mirror and a support structure are non-uniform. The sandwich precision thermal controller comprises an inner temperature control device, an outer temperature control device and a reflector support structure; the inner temperature control device and the outer temperature control device are identical in structure; the reflector support structure is disposed between the inner temperature control device and the outer temperature control device; a reflector is disposed in the inner temperature control device; the reflector support structure is disposed between the inner temperature control device and the outer temperature control device. The temperature of the reflector is controlled through controlling the temperature of an inner radiator, the temperature of the support structure is controlled through controlling the temperature of an outer radiator, and temperature uniformity is effectively ensured for the reflector and the support structure.

The invention discloses a segmental heating device of a heated-incombustible cigarette. The heating device comprises a heater and a control circuit, wherein the heater comprises plural heating units and a heat conduction pipe; the heating units comprise annular electric heating units; the heating units comprise heating rings, and the electric heating elements sleeve the peripheries of the heatingrings; and the plural heating rings firmly sleeve the outside of the heat conduction pipe and are distributed in a separated mode in an axial direction of the heat conduction pipe. According to the segmental heating device provided by the invention, tobacco shreds can be uniformly heated by virtue of the heating rings, and the circumstance that the tobacco shreds are subjected to spontaneous combustion due to local high temperature can be prevented. The heat conduction pipe is arranged between the heating rings and the tobacco shreds; and the tobacco shreds, which are stopped from being heatedin a previous stage, can acquire partial heat energy conducted from the heat conduction pipe when heating is conducted in a next stage, so that the circumstance the smoke, which is generated from thermal cracking in a heating stage, is excessively absorbed by low-temperature heated tobacco shreds since the part of the tobacco shreds are at a too low temperature can be prevented.

The invention relates to a method for preparing light ceramisite by means of chromium-containing sludge. The method comprises the following steps that 1, raw materials are supplied by weight; 2, the chromium-containing sludge is ground to 150-200 meshes in a wet mode, municipal sludge, decomposed rock, sludge and clay or kaolin are ground to 100-150 meshes in a dry mode, anthracite is ground to 100-150 meshes in a drying mode, and ferric oxide or hematite is ground to 100-150 meshes in a dry mode; 3, all the raw materials are mixed evenly; 4, the mixed materials are deep refined and then extruded into raw ceramisite through a granulating machine; 5, the raw ceramisite is preheated and calcined into light ceramisite through a double-barrel rotary kiln, and after discharging and cooling are performed, the finished light ceramisite is obtained. According to the method, the chromium-containing sludge generated through leather production is effectively utilized, toxin removing is thorough, the reliability is achieved, the technology is simple, the sludge consumption is large, heavy metal pollutants can be simultaneously treated, the production cost is low, and the prepared ceramisite can be reused in construction industry.

The invention belongs to the technical field of glass performance testing, and relates to a method using a dilatometer to measure the electronic flat glass shrinkage. The method comprises the following steps: measuring the length of a sample to be measured by a screw micrometer, then placing the sample into a dilatometer, carrying out heating-cooling-heating according to a certain temperature, cooling the sample to the room temperature; reading the shrinkage amount after the sample is cooled to the room temperature and the sample temperature becomes stable, using the average value of last six values so as to minimize the error, and finally calculating the glass shrinkage. According to the provided method, the built-in software testing function of the dilatometer can record the change of length after heating, thus the glass shrinkage can be calculated, and the method has the characteristics of simple operation and high measurement precision.

The invention discloses a dual-rod linkage type tea leaf carding machine which comprises a machine frame, a motor, a transmission mechanism, crankshaft and connecting rod mechanisms fixed on the two sides of an output shaft of the transmission mechanism, sieve groove pots fixed at the top ends of the crankshaft and connecting rod mechanisms, and heating plates arranged below the sieve groove pots, wherein the motor, the transmission mechanism, the crankshaft and connecting rod mechanisms, the sieve groove pots and the heating plates are all arranged in the machine frame; the motor is used for driving the transmission mechanism to run; the output shaft of the transmission mechanism are fixedly connected with the cranks of the crankshaft and connecting rod mechanisms. According to the dual-rod linkage type tea leaf carding machine, the sieve groove pots are driven by the crankshaft and connecting rod mechanisms symmetrically arranged at the two ends of the output shaft to make an up-down reciprocating movement and a planar left-right swinging movement for carding tea leaves, and the manual sieving operation is simulated, so that the tea leaves cannot be longitudinally restricted in the sieve groove pots, and tea strips are tighter, straighter and more stretched; due to the adoption of the sieve groove pots, the tea leaves are uniformly heated and the moisture can be timely dissipated.

The invention discloses a bamboo mat processing method and relates to the technical field of manufacture of bamboo mats. The bamboo mat processing method includes steps of A, preparing bamboo splints; B, pressurizing and boiling the bamboo splints; C drying the boiled bamboo splints; D, rubbing and polishing the surfaces of bamboo green of the bamboo splints; E, embossing the surfaces of the bamboo green of the bamboo splints; F, drying the bamboo splints; G, knitting the bamboo splints to be a base bamboo mat; H, gluing lining; I, pressing oil; J, cutting off redundant parts of the base bamboo mat subjected to oil pressing by a cutting machine; K, sewing, wrapping and jointing the base bamboo mat with redundant parts cut off to form a semi-finished bamboo mat; L, shaping the semi-finished bamboo mat by a bamboo mat shaping machine, finally, completing processing of the bamboo mat. Compared with the prior art, the bamboo mat processing method solves the problem about high processing cost of bamboo mats in the prior art.

The invention relates to a fluid container capable of refrigerating and heating, which comprises a container body (1), a semiconductor chip (4) arranged below the bottom of the container body (1), a radiator (6) arranged below the semiconductor chip (4), a control panel (32) and a control circuit board (33) connected with the control panel (32), wherein a temperature sensor (9) connected with the control circuit board (33) is arranged on the container body (1); the control circuit board (33) controls the supply and current direction of a power supply of the semiconductor chip (4); and a stirrer (8) is arranged at the bottom in the container body (1). Compared with the prior art, the fluid container can heat or refrigerate automatically to reach a set temperature according to the set temperature, and is intelligent and practical, and in addition, the stirrer can stir fluid in the container body continuously and prevent the fluid at the bottom in the container body from freezing.

The invention discloses a microwave doped sintering method of ITO (Indium Tin Oxide). A high-density and low-resistance ITO target is prepared through doping of metallic oxide and nitride by a microwave sintering method. The microwave doped sintering method comprises the following technological conditions: polyvinyl butyral (PVB) serves as an adhesive agent, and can improve the shaping property of powder in a pressing process, improve compaction strength and prevent a sample from cracking after demoulding, and the relative density of the obtained ITO target product ranges from 95% to 99% and the resistivity of the product ranges from 2.0*10<-4> omega*cm to 3.5*10<-4> omega*cm. Compared with the prior art, the product obtained by the microwave doped sintering method is high in density, low in resistivity and uniform in grain size distribution. The adopted technology does not require oxygen, and thus the industrial production safety is improved; and required equipment is simple, and thus the production cost is reduced.

A synthetic particle preparation system allows a material to be prepared into synthetic particles. The synthetic particle preparation system comprises a reaction apparatus, and the reaction apparatus comprises a rotatable reaction tank and a plurality of strip-shaped plates. The reaction tank comprises a cylindrical main body; the plurality of strip-shaped plates are spaced apart in the cylindrical body, one side edge of each strip-shaped plate is fixedly connected with the inner wall of the cylindrical main body, each strip-shaped plate is obliquely arranged relative to the axis of the cylindrical main body, the plurality of strip-shaped plates are arranged along a spiral line, and the spiral line is a curve spirally extending along the axis of the cylindrical main body, wherein the plurality of strip-shaped plates can rotate along with the reaction tank, so that the material and the synthetic particles can be slidable along the extending direction of the spiral line on the plurality of strip-shaped plates. The synthetic particle preparation system is not only simple in structure, and allows the material in the reaction tank to be heated more-evenly.

The invention discloses a log drying device which is especially used for drying logs of small diameters. The invention comprises a machine body (6) provided with an inner hollow cavity, a heating device (18a, 18b and 24) and a log-loading truck (22) used for holding logs to be dried. The heating device and the log-loading truck are arranged in the hollow cavity of the machine body (6). The heating device lead drying mediums in the hollow cavity of the machine body (6) to form convection so as to provide heat to the logs arranged on the log-loading truck. A vacuum venting outlet (8) connecting with a vacuumizing device is arranged on the machine body and is used for vacuumizing the hollow cavity of the machine body while logs are dried. The adoption of the log drying device of the invention can quickly dry logs in a lower temperature and guarantee non-crack on logs. The invention is especially suitable for drying logs which have a better ventilating capability and are apt to crimple as well as hard broadleaf logs with a bigger thickness.

The invention relates to a drying device, in particular to a cloth drying device. The technical problem to be solved by the present invention is to provide a cloth drying device capable of rapidly drying cloth. In order to solve the above-mentioned technical problems, the present invention provides such a cloth drying equipment, which includes a frame body, etc.; There are fixtures. The invention controls the left and right movement of the hot air blower by providing a left and right moving device, and performs drying treatment on different positions of the cloth, so that the cloth is heated more evenly, and the effect of not damaging the cloth is achieved.

The invention relates to a polycarbonate composite material for 3D printing and a preparation method thereof. Magnesium borate whiskers and graphene oxide are introduced into polycarbonate, so that not only is the polycarbonate strengthened, but also carboxyl, hydroxyl and epoxy functional groups can be promoted to be connected with the polycarbonate and to be uniformly dispersed, the thermal superconductivity of the graphene oxide allows powder in the polycarbonate to be uniformly heated and solidified, thereby reducing the thermal shrinkage of a product during 3D printing. Further, by virtue of polyelectrolytes, the polycarbonate powder is subjected to surface modification at a fluidized bed, so that the surface of the polycarbonate powder is more in a spherical shape, the mobility of the polycarbonate is greatly improved, the powder agglomeration is effectively prevented, and the polycarbonate is suitable for a 3D printing material.

The invention relates to the field of cooking equipment, in particular to a stir-frying mechanism of vegetable cooking equipment. The stir-frying mechanism comprises a reciprocating type lifting device and a stir-frying device, wherein the stir-frying device is installed on the reciprocating type lifting device; the reciprocating type lifting device comprises a fixed seat, a first driving device, a first crank-connecting rod mechanism and a lifting seat; the first crank-connecting rod mechanism is installed on the fixed seat, the first driving device is fixedly installed on the fixed seat, and the first crank-connecting rod mechanism is driven by the first driving device; a first sliding groove is vertically formed in the fixed seat, a sliding rod is vertically arranged on the lifting seat, a sliding pair is formed by the sliding rod and the first sliding groove, and the sliding rod is hinged to a connecting rod of the first crank-connecting rod mechanism and a reciprocating type lifting mechanism is formed. According to the stir-frying mechanism, the reciprocating type lifting device facilitates a vegetable shovel to go up and down, so that the stir-frying mechanism has the effect of spreading while frying, and food is more evenly heated; a stirring rod is driven to make circular motion by a stirring rod rotating device, so that the food in a pot is scattered by stirring, and a cooking technology of scattering by stirring is realized.

The simulating experimental facility relates to the area of the petroleum geology. The invented experimental facility includes the experimental device for simulating the creation of oil and gas and the experimental device for simulating the migration and congeries of oil and gas. The characteristics are that the back-pressure regulator of the experimental device for simulating the creation of oiland gas is connected to the constant temperature cabinet of the experimental device for simulating the migration and congeries of oil and gas. The experimental facility possesses the features of highdegree of automation, easy of maintenance, high temperature and high pressure. The invented device can realize the circulation flow so as to simulate the open system and the closed system.

The invention discloses a Cu/ZnO catalyst, a preparation method thereof and application thereof to CO2 chemical conversion and belongs to the fields of catalysis and greenhouse gas CO2 emission reduction. The preparation method of the Cu/ZnO catalyst includes the steps that soluble zinc salt and hexamethylene tetramine are dissolved in an ethylene glycol aqueous solution; under the inert atmosphere, a ZnO carrier is synthesized through reaction in a microwave reactor at the power of 200-300 W; by means of a deposition precipitation method, active metal copper is supported on the synthesized ZnO carrier. The synthesized ZnO carrier has uniform flowerlike or nanorod morphology, and the Cu loading is 5-15 wt%. The catalyst represents high activity and stability in the reaction of synthesizing low-carbon alcohol through CO2 catalytic conversion. The synthesized catalyst has the advantages of being simple in technology, low in cost, high in catalytic performance and the like, and accords with the development trend of green chemical engineering. Besides, the catalyst has wide application prospects in the field of synthesizing important chemicals through CO2 chemical conversion.

The invention relates to a cigarette heater and a heating assembly thereof. The cigarette heating assembly comprises a heating tube, a sleeve, a first conductive ring and a second conductive ring, wherein a plurality of connecting parts are connected to the two sides of heating rings respectively, the connecting parts close to first connecting rings are connected with the first connecting rings, the connecting parts close to second connecting rings are connected with the second connecting rings, and the rest of the connecting parts are connected with the adjacent heating rings. Due to the fact the conductive rings are sleeved with the connecting rings and the connecting rings are closely connected, the resistances on all the parts of the connecting rings are equal, and current distribution is uniform. Meanwhile, the connecting parts are alternately arranged on the two sides of the heating rings so that the distances between two adjacent connecting parts can be equal, all segments of currents passing through the heating rings are equal, the resistances are equal, the heat generation rates of all the parts on the heating rings are equal, heat generated by the heating tube is uniform, cigarettes can be evenly heated, and the utilization rate of tobacco is increased.

The invention provides an oven with an oblique locking device. A main body of the oven comprises an upper main body and a lower main body, wherein a support member is arranged at the lower part of the main body. The oven is characterized in that the bottom and the lateral part of the main body are supported by the support member; a positioning device or a locking device, which can control the angle change between the main body and the support member, is arranged at the connecting position between the support member and the main body. The oven provided by the invention has the characteristics of simple and reasonable structure, flexibility in operation, uniform heating of food, good cooking effect, simplicity in assembly, disassembly and cleaning, and wide application range.

The invention discloses a pit-type tempering furnace with a pressure control function. The pit-type tempering furnace comprises a furnace cover and a casing, wherein the furnace cover is mounted at the upper part of the casing; heating pipes and an air duct are arranged in the casing; the air duct is covered with the multiple heating pipes; a rotating platform is arranged in a furnace body and can rotate continuously and stably; the rotating platform drives a metal casting to rotate in different directions at different speeds in a heating process, heated air circulation dead angles in the furnace body are eliminated, different areas in a tempering chamber are heated uniformly, further, the metal casting is heated uniformly, and consistent quality of finished products can be guaranteed when massive metal castings are subjected to tempering processing; a smoke exhausting system arranged on the furnace cover solves the problem that the processing effect is affected by continuous increased temperature due to overhigh pressure in the furnace body, can open an auxiliary cover in advance to reduce the pressure in the furnace body and exhausts high-temperature gas in the furnace body when the metal casting is taken out after tempering, and the metal casting is taken out conveniently.