213 results about "Spiral heat exchanger" patented technology

The invention relates to a heat pump hot water unit with in-water cycling heat exchanging loop, comprising refrigerant loop system, water-refrigerant heat exchanging system, signal collection and circuit control system. It is characterized in that the water-refrigerant heat exchanging system adopts forced internal-cycling loop constituted by water-refrigerant heat exchanger, reflux tube and internal-cycling pump or natural internal-cycling loop which uses diversion sleeve to separate spiral heat exchanger in heat storing water tank and water pre-heating device can be collocated; the refrigerant loop system has single cycling of single air heat source, independent cycling of double heat source with four functions and adopts the structure of three-way electromagnetic valve with pneumatic valve, four-way valve and multiple-path restrictor so as to make switch of all cycles convenient; wind-cold heat exchanger also has water fin tube. The unit efficiency of invention is high and defrosting in winter is complete. Pressure can not be overloaded in summer. Hot water in 55deg.C can be supplied quickly and continuously. Waste heat can be reclaimed or solar hot water can be made use of. It can save energy by 70-85% compared with electric water heater in annual average. The independent cycling unit with double heat source has refrigeration, heating, heating water and heating water with refrigeration functions.

A heat exchanger has a first thermally conductive tube for conducting a fluid and a second thermal conductive tube for conducting a fluid. The first thermally conductive tube forms a first loop while the second thermally conductive tube forms a second loop. The first loop neighbors the second loop.

A shell-and-tube heat exchanger comprises a tubular shell, tube sheets arranged along two ends of the tubular shell and an end cover which is fixedly connected to the end of the tubular shell on the outer side of the tube sheets. A cavity of the shell and the tube sheet are provided with a whirl plate, a hollow coil heat exchanger bundle, a pull rod and a pipe spacer. Pores are uniformly arrangedon the whirl plate and periphery of the whirl plate is provided with a soft edge. The hollow coil heat exchanger bundle passes through the pore on the whirl plate and is fixed between two tube sheets.The hollow heat exchanger is the hollow coil heat exchanger bundle, tube wall of which has a continuous spiral slot shape and the external surface of which also has a spiral slot shape. The inventionavoids short circuit and split stream of flow media formed in the shell, and water is forced to spirally flow from a flowing pore gap, which is formed between the pore on the whirl plate and the spiral heat exchanger bundle, through the heat exchanger bundle. The invention improves heat-exchanging efficiency, enables shell side fluid to flow through a reasonable passage, reduces local scour, andeffectively prevents corrosion of the whirl plate, with clean and pollution-free water.

A spiral heat exchanger includes a spiral body formed by at least one spiral sheet wound to form the spiral body forming at least a first spiral-shaped flow channel for a first medium and a second spiral-shaped flow channel for a second medium, wherein the spiral body is enclosed by a substantially cylindrical shell being provided with connecting elements communicating with the first flow channel and the second flow channel, where the at least one spiral sheet comprises a corrugated heat transfer surface with corrugations for increasing the heat transfer and supports for spacing the wounds of the at least one spiral sheet in the spiral body.

A spiral heat exchanger features: a cold fluid inlet manifold, a hot fluid inlet manifold and at least one spiral fluid pathway. The cold fluid inlet manifold receives cold fluid and provide cold inlet manifold fluid. The hot fluid inlet manifold receives hot fluid and provide hot inlet manifold fluid. The at least one spiral fluid pathway includes cold spiral pathways configured to receive the cold inlet manifold fluid and provide cold spiral fluid pathway fluid, and hot spiral pathways configured to receive the hot inlet manifold fluid and provide hot spiral fluid pathway fluid. The cold spiral pathways and the hot spiral pathways are configured in relation to one another to exchange heat between the cold spiral pathway fluid and the hot spiral pathway fluid so that the hot spiral fluid pathway fluid warms the cold spiral fluid pathway fluid, and vice versa.

The invention relates to a spiral heat exchanger including a central cylinder (5) and at least two spiral sheets (6, 7). The sheets extend from the cylinder to form a first spiral-shaped flow channel (8) for a first medium and a second spiral-shaped flow channel (9) for a second medium. The cylinder forms an inner space within the cylinder. The cylinder includes a first opening (11) communicating with the first flow channel and a second opening (12) communicating with the second flow channel. A pipe (14) extends into the inner space of the cylinder. A first communication channel, communicating with the first flow channel via the first opening, is formed within the pipe. A second communication channel, communicating with the second flow channel via the second opening, is formed in the inner space outside the pipe.

A heat exchanger has a first thermally conductive tube for conducting a fluid and a second thermal conductive tube for conducting a fluid. The first thermally conductive tube forms a first loop while the second thermally conductive tube forms a second loop. The first loop neighbors the second loop.

This invention relates to a polymerization process for forming polymer comprising: contacting (typically in a solution or slurry phase), a monomer and a catalyst system in a reaction zone comprising at least one spiral heat exchanger and recovering polymer, wherein the monomer, the catalyst system and the polymer flow through the at least one spiral heat exchanger in a cross-flow direction relative to spirals of the at least one spiral heat exchanger.

A plate fin heat exchanger of the present invention includes a heat exchange part including a heat exchange part main body including layers of plural flow passages, and heat transfer members each of which is disposed within each flow passage of the heat exchange part main body to transfer the heat of fluid flowing in each of the flow passages to each partition walls opposed across the flow passage; and sensing parts connected to both the outsides of the heat exchange part respectively. Each of the sensing parts includes plural sealed spaces, and a sensor wall disposed to separate the outermost sealed space from the sealed space on the inner side thereof. The plate fin heat exchanger further includes a detection means for detecting damage of the sensor wall of the sensing part. According to such a structure, external leak of the fluid performing the heat exchange can be prevented while suppressing deterioration of performance or increase in size or weight.

A spiral heat exchanger features first spiral channels configured to form rows and columns of coiled hot fluid pathways to receive hot fluid; and second spiral channels configured to form corresponding rows and columns of coiled cold fluid pathways to receive cold fluid having a temperature less than the hot fluid. The first spiral channels and the second spiral channels are configured to alternate every other row and column so as to form a matrix of alternating rows and columns of coiled hot and cold fluid pathways separated by alternating coiled walls that act as both fluid separators and conduits through which heat is transferred between the hot fluid and cold fluid.

A large spiral low-order lignite quality improving system comprises a spiral heat exchanger, a combustion chamber, a lignite feeding device, a quenching box and a dedusting device. The spiral heat exchanger is horizontally placed and composed of an outer sleeve, a rotating shaft and a motor, wherein the rotating shaft and the motor are sleeved in the outer sleeve, and the rotating shaft is in transmission connection with the motor. A spiral blade is axially arranged along the rotating shaft, the wall of the outer sleeve, the rotating shaft and the spiral blade are all of hollow structures, tow ends of the spiral blade are communicated with a hollow cavity of the rotating shaft, the inlet end of a hollow cavity of the wall of the outer sleeve and the inlet end of the hollow cavity of the rotating shaft are communicated with the combustion chamber, and the outlet end of the hollow cavity of the wall of the outer sleeve and the outlet end of the hollow cavity of the rotating shaft are communicated with the dedusting device. The lignite feeding device is arranged on the upper portion of the spiral heat exchanger and close to the side of the dedusting device, and the quenching box is arranged on the lower portion of the spiral heat exchanger and close to the side of the combustion chamber. The large spiral low-order lignite quality improving system requires no pre-drying process, is strong in adaptability of coal types and particularly suitable for improving quality of sticky lignite, only needs to pre-break raw coal, is safe in operation, simple in structure and high in heat exchange efficiency, can perform large-scale continuous production easily and can obtain semi-coke, tar and coal gas with high quality.

The invention discloses a collecting main comprising an axially extending inner cavity and a plurality of axially extending and single components, wherein the inner cavity comprises a refrigerant charging cavity and a refrigerant distributing cavity; the refrigerant charging cavity is separated from and is in fluid communication with the refrigerant distributing cavity, and a refrigerant enters the refrigerant charging cavity and is distributed to heat exchange tubes from the refrigerant distributing cavity; and the refrigerant charging cavity and the refrigerant distributing cavity is formed by sequentially arranging and connecting the axially extending and single components in an assembly direction vertical to the axial direction. According to the structure of the collecting main disclosed by the invention, the collecting main is formed by connecting the single components together so that a problem of two-phase flow distribution of a heat exchanger is improved, and the heat exchange performance is improved; moreover, the problem of instable quality of a product is improved due to the simple assembly technology; and in addition, a problem of high cost of the existing radio-frequency welded tube is solved.

Disclosed is a superposed heat exchanger, comprising multiple fins (1) superposed together, two opposing sides of each fin (1) bending upwards, fitting with the fin (1) above to form a ventilating air duct, and adjacent fins (1) being arranged in a longitudinally and transversely staggered way so as to create mutually independent transverse air ducts and longitudinal air ducts separated top to bottom. The heat exchanger is created of multiple superposed fins arranged in a longitudinally and transversely staggered way, uses a plastic material, is simple to shape, and the thickness thereof can be controlled so that the heat exchanger can be made very thin. The number of fins can be increased in an effective space, which can increase the heat-dissipation area and improve heat-exchange efficiency. Using an insert pin (4), an insert groove (5) and a curved turn-up edge (7) to position and connect, the longitudinally and transversely staggered arrangement can be directly superposed with no need for other connecting components, and the positioning thereof is simple and precise.

A heat exchanger plate (1), a plate heat exchanger for evaporation of a first fluid, and a method of making a plate heat exchanger are disclosed. The heat exchanger plate comprises a heat exchanger area extending in parallel with an extension plane (p) of the heat exchanger plate, an edge area extending around the heat exchanger area, a number of portholes (11-14) extending through the heat exchanger area, and a peripheral rim (15) surrounding a first porthole of said number of portholes and extending transversely to the extension plane from a root end (16) to a top end (17) with a rim height(H) perpendicular to the extension plane. The heat exchanger plate comprises at least one restriction hole (20) extending through the peripheral rim and having a hole height (h) perpendicular to the extension plane.