33results about How to "Affect heat transfer" patented technology

The invention provides a refrigerator and a quick-freezing method for the refrigerator. The refrigerator comprises an isolation bag, a first cord and a first motor, wherein the isolation bag is arranged in a storage compartment of the refrigerator and provided with a bag opening used for storing and taking objects; the first cord movably surrounds the periphery of the bag opening, and the bag opening can be fastened when the first cord is strained towards the winding end of the first cord; and the first motor is rotated towards a first direction in a controlled mode so that the first cord can be driven to be strained in the winding end of the first cord so as to fasten the bag opening. The invention further provides the quick-freezing method for the refrigerator. When the objects are quickly frozen through the quick-freezing method, on one hand, the objects can be protected against contamination or air-drying, and on the other hand, the bag opening of the isolation bag can be fastened automatically.

The invention discloses a fast-response temperature-measuring thermocouple device for casting, which comprises two thermocouple wires, which are located in a protective sleeve and connected at the hot end by a metal joint. Hollow structure, the contact part between the metal joint and the temperature measuring hole of the mold is a smooth plane, and the corresponding contact surface between the temperature measuring hole of the mold and the metal joint is also processed into a smooth plane; The cross-section of the contact part between the front end and the mold is in a shape suitable for the outer surface of the mold, and a sealing material is provided on the contact surface between the front end of the sheath and the mould; The invention enables the heat of the mold to be rapidly transferred to the thermocouple after the mold is heated up, so as to realize the rapid response of the thermocouple to the temperature. Protects the smooth contact surfaces of thermocouple metal junctions from the environment. The metal junction is insulated from the thermocouple parts except the thermocouple wire, avoiding interference.

The invention provides a refrigerator and a quick-freezing method for the refrigerator. The refrigerator comprises an insulating bag which is arranged in a storage chamber of the refrigerator and used for storing articles and a plurality of closing units. Each closing unit comprises a first line cord and a first motor. The first line cords are arranged outside the insulating bag and can move around the insulating bag. The first motors are configured to be controlled to rotate in the first direction so as to drive the corresponding first line cords to be tightened towards the winding ends of the first line cords so that the insulating bag can be closed to one chamber wall of the storage chamber as the first cords are tightened. The invention further provides the quick-freezing method for the refrigerator. When the articles are quick-frozen by the adoption of the quick-freezing method, on the one hand, the articles can be protected against pollution or , and on the other hand, when the isolating bag is not used, the isolating bag can be closed into the chamber wall of the storage chamber through the closing units automatically, and the storage space of the storage chamber is not occupied.

The invention discloses a control method of a liquid hydrogen fuel cell waste heat recovery system, comprising the steps of: when the fuel cell is running, real-time detection of a stack cooling liquid inlet temperature T in , the stack coolant outlet temperature T out , and calculate the real-time power generation power P of the stack; compare the detected temperature with the temperature threshold, adjust the four-way valve based on the temperature and power generation after calculation, and enter different waste heat recovery modes. The invention improves the utilization rate of heat energy, reduces the requirement for the heat dissipation capacity of the heat dissipation fan, reduces the power consumption of the heat dissipation system, and reduces noise at the same time; the four-way valve is calculated and controlled in combination with the temperature and the power generation power, and the internal temperature of the stack can be accurately adjusted by using the waste heat. There will be no local overcooling or local overheating, which is beneficial to the performance of the fuel cell.

The present invention provides a die capable of achieving rapid forming and quenching therein. The die includes an upper die, a blank holder and a lower die, where the upper die is composed of an internal solid die core and a thin-walled skin. Grooves in communication with each other are disposed between the internal solid die core and the thin-walled skin. In a forming stage, the grooves are not filled or filled with a heat insulating material such as a gas; and in a quenching stage, a low-temperature medium is introduced into the grooves. The die can be used to achieve rapid forming and quenching of metal materials of different types and thicknesses.

The invention discloses a fast-response temperature-measuring thermocouple for metal mold casting, which comprises two thermocouple wires, which are located in a protective sleeve and connected at the hot end by a metal joint. It is a hollow structure, the contact part between the metal joint and the mold temperature measuring hole is a smooth plane, and the corresponding contact surface between the mold temperature measuring hole and the metal joint is also processed into a smooth plane; behind the metal joint, the inner wall of the temperature measuring hole and the protective cover A high temperature sealant is provided between the tubes. The invention enables the heat of the mold to be rapidly transferred to the thermocouple after the mold is heated up, so as to realize the rapid response of the thermocouple to the temperature. Protects the smooth contact surfaces of thermocouple metal junctions from the environment. The metal junction is insulated from the thermocouple parts except the thermocouple wire, avoiding interference.

The invention provides a vacuum collector tube and a manufacturing method thereof, and the method comprises the following steps: after the manufacturing of a glass inner tube is completed, when preparing a film on the outer surface of the glass inner tube, firstly selecting the aluminium foil or the copper foil as a metal substrate; utilizing the sputtering process to form an aluminium nitrogen compound absorbing layer or utilizing the electroplating process to form a chromium plating absorbing layer on one side of the metal substrate; utilizing the polishing process to polish the surface of the metal substrate to form a reflecting layer on the other side of the metal substrate; clipping the film, and then coating the prepared film on the outer surface of the glass inner tube and utilizing the heat-conducting transparent organic adhesive to adhere the prepared film on the outer surface of the glass inner tube seamlessly; carrying out tight closeness and butt joint on the edge; and finally forming the interval space between the glass inner tube and the glass outer tube into vacuum and sealing the connector. The heat absorption capacity of the vacuum collector tube is higher, and can reach 96% to 98%; the film is not easy to fall off; the service life is long; the color consistency is good; and the operation is simple and the manufacturing cost is low by adopting the method.

The invention provides a technology and a system used for processing waste water. The system comprise a waste water preheater, a first effect evaporator, a second effect evaporator, a vapour compressor, a condensed water collector, and a noncondensable gas compressor. The invention also provides the technology used for processing waste water using the system. The waste water processing technology and the system are safe and reliable; equipment is simple; operation cost is low; energy saving effect is obvious; and 50 to 95% of water resource can be recycled.

The invention provides a refrigerator and a quick freezing method for the same. The refrigerator comprises an isolation bag, wherein the isolation bag is arranged in a storage chamber of the refrigerator and is used for storing articles; a first magnetic material is arranged on at least part of the wall of the storage chamber; and a second magnetic material which attracts the first magnetic material is correspondingly arranged on at least part of the wall of the isolation bag, so that the wall, with the second magnetic material, of the isolation bag is magnetically attracted to the first magnetic material when approaching the wall, with the first magnetic material, of the storage chamber. The invention further provides the quick freezing method for the refrigerator. The isolation bag for storing the articles is arranged in the storage chamber of the refrigerator, so that the articles to be cooled can be protected against being polluted or air-dried. When not used, the isolation bag of the refrigerator can be magnetically attracted to the wall of the storage chamber, and does not occupy storage space of the storage chamber.

The invention discloses an automobile radiator with a shock absorbing structure. A cooling fin installing base is included; one side of the cooling fin installing base is fixedly connected with a faninstalling plate; cooling fans are symmetrically embedded in and installed in one side of the fan installing plate; and the inner wall of the top of the cooling fin installing base is uniformly connected with cooling fins. The automobile radiator with the shock absorbing structure is scientific and reasonable in structure, and safe and convenient to use; after cooling an automobile, due to runningof a water sucking pump, a cooling fin cleaning agent in a second storing bin can be conveyed into the cooling fins, and therefore the interiors of the cooling fins installed in the cooling bin installing base can be cleaned, and it can be avoided that scale is accumulated in the cooling fins, and consequently the cooling fins are blocked; and due to shock absorbing installing bases symmetricallyinstalled at the bottom of the cooling fin installing base, shock absorbing protection can be performed on the automobile radiator, and it is avoided that waggle generated by the automobile is transmitted to the automobile radiator, and consequently the interior of the automobile radiator is vibrated.

The invention provides a refrigerator and a quick freezing method used for the refrigerator. The refrigerator comprises an isolation bag and an air extracting pump, wherein the isolation bag is arranged in a storage room and used for storing a to-be-cooled object, and the air extracting pump is configured to conduct air extracting on the isolation bag in a controlled mode so that the wall of the isolation bag can be attached to the outer surface of the object stored in the isolation bag in a collapsed mode. The storage room is configured to contain quick freezing liquid injected into the storage room in a controlled mode so that the object stored in the isolation bag is at least partially immersed in the quick freezing liquid. The invention further provides the quick freezing method used for the refrigerator. When the object is subjected to quick freezing through the quick freezing method, on the one hand, the object can be protected from being polluted or air-dried, on the other hand, the situation that quick freezing liquid heat transfer is affected by air is avoided, the large contact area of the object and the quick freezing liquid is ensured, and thus quick freezing is conducted on the object at a high freezing speed.

The invention discloses an engine cooling system based on phase change fluid / water. The engine cooling system comprises an engine and a cooling-water cooling system, wherein the cooling-water cooling system comprises a first pump, a first adjustment valve and a heat exchanger; the first pump is communicated with the first adjustment valve and the heat exchanger respectively; a cooling water inlet is formed in an engine body of the engine; a cooling cavity is formed between the engine body of the engine and a cylinder sleeve; the cooling water inlet is communicated with the cooling cavity; a cooling water outlet is formed in a cylinder cover of the engine; the first adjustment valve is communicated with the cooling water inlet; the cooling water outlet is communicated with the heat exchanger; the engine cooling system based on the phase change fluid / water is characterized by being provided with a phase change fluid cooling system; the phase change fluid cooling system comprises a second pump and a second adjustment valve; a spiral cooling pipe is fixedly arranged in the cooling cavity; the second pump is communicated with the second adjustment valve and the heat exchanger respectively; the second adjustment valve is communicated with an inlet of the cooling pipe; an outlet of the cooling pipe is communicated with the heat exchanger. The engine cooling system has the advantages that the circulating flow of a cooling medium is greatly reduced, pump consumption is reduced, and an energy-saving effect is achieved; meanwhile, the phase change fluid absorbs heat in the engine in a phase change latent heat manner; the temperature of the cylinder body of the engine is more uniform as the temperature region of a phase change material is narrower.