Refrigerating unit with evaporator and method for manufacture of evaporator for refrigerating unit

FIELD: human vital needs satisfaction.

SUBSTANCE: refrigerating unit with an evaporator (103) for refrigerant evaporation includes an inlet tube (105) for refrigerant inlet, containing a pipe region (107) with the first flow cross section and a narrowing region (109) with the second flow cross section. The second flow cross-section is smaller than the first flow cross-section. The narrowing region (109) is formed by several concave surfaces of the inlet pipe (105) wall. The pipe (105) is located on the outlet side of the throttling body.

EFFECT: creation of a refrigerating unit with an evaporator, in which the noise arising when the refrigerant is pumped into the evaporator is reduced.

13 cl, 15 dwg



Same patents:

FIELD: heating.

SUBSTANCE: improved coil assembly includes preferably coiled pipes. These pipes mainly have elliptical cross section with external ribs (20) shaped on the external surface of pipes. Ribs are spaced from each other with an interval corresponding substantially from 1.5 to substantially 3.5 ribs per inch (2.54 cm), along the longitudinal axis (13) of pipes, besides, ribs have height from the outer surface of the pipes, making substantially from 23.8% to substantially 36% of the nominal external diameter of the pipe, and have thickness making substantially from 0.007 inch (0.018 cm) to substantially 0.020 inch (0.051 cm). Pipes are spaced with a centre-to-centre interval (DH) mainly along the horizontal line, which is perpendicular to the longitudinal axis of pipes and makes substantially from 109% to substantially 125% of the nominal outer diameter of the pipe, and mainly with a vertical centre-to-centre interval (DV), making substantially from 100% to approximately 131% of the nominal external diameter of the pipe.

EFFECT: increased efficiency of an evaporation heat exchanger.

35 cl, 16 dwg, 1 tbl

FIELD: heating.

SUBSTANCE: group of inventions relates to refrigerating equipment. Evaporator for refrigerating device includes a pipe (11) for coolant, at least one bearing plate (7), on which the pipe (11) is fixed, and a heat distributing plate (12) arranged between the pipe (11) and the bearing plate (7) and having ledges (18), which are used to press the pipe (11). The heat distributing plate (12; 21) is formed from plastic with an additive from a heat conducting material and has a groove adjacent to the pipe (11; 23, 24) with geometric closure.

EFFECT: improved heat transfer.

13 cl, 5 dwg

FIELD: heating.

SUBSTANCE: group of inventions relates to a refrigerating device and to the evaporator used in such a refrigerating device. The evaporator for a refrigerating device comprises a pipe through which the refrigerant passes. The said evaporator comprises at least one bearing plate on which the pipe is fixed. Between the pipe and the bearing plate a heat-distributing layer is located. The heat-distributing layer is graphitiferous. Also a refrigerating device is disclosed.

EFFECT: group of inventions is aimed at providing good heat exchange between the pipe and the bearing plate, increasing efficiency.

15 cl, 6 dwg

FIELD: heating.

SUBSTANCE: invention relates to a refrigeration circuit. The essence of the invention is the refrigeration circuit (3) for household appliances, in particular household appliances for cooling, such as refrigerators and freezers, comprises a first heat exchanger (5) made with the ability of fluid communication with the compressor (4), which provides cooling of cooling fluid medium which flows through it, and its transition to substantially liquid phase. It also comprises a second heat exchanger (7) fluidly communicating with the said first heat exchanger (5) and acting in the space (2) to be cooled. The second heat exchanger (7) provides a partial transition of the cooling fluid medium in gaseous phase with heat absorption thereby the said space (2) is cooled. The cooling fluid medium is circulated from the first heat exchanger (5) to the second heat exchanger (7) and, thus, enters into the compressor (4) for the next cycle. The capillary device (6) is located between the first heat exchanger (5) and the second (7) heat exchanger for expanding the said cooling fluid medium. One of the said first heat exchanger (5) and the second heat exchanger (7) comprises a flexible tube (9), and the part of the said tube (9) has such a corrugated profile, which gives it flexibility, and the said tube (9) in section comprises a layer (100) of plastic and a layer (101) comprising the metallic material. The metal layer (101) is connected to the plastic layer, and the said metallic material is configured with the ability to form a barrier against moisture. The said layer (100) of plastic is a layer the structural purpose of which is maintaining the shape of the tube (9), and is preferably made of a thermoplastic material. The metal layer (101) is flexible, it does not have a function of a supporting structure and comprises a single-layered metal film or a multilayer film comprising one or more metal films connected or not connected to the layer of material made with the ability to maintaining the shape.

EFFECT: improving the efficiency of heat exchanging and providing waterproofing.

16 cl, 27 dwg, 1 tbl

Refrigerating unit // 2505756

FIELD: heating.

SUBSTANCE: invention refers to refrigerating unit (1) that includes external housing (2), at least one refrigerating compartment (3) for storage of cooled products (5) and refrigerating circuit (6) with evaporator (4) for cooling of refrigerating compartment (3). Evaporator (4) includes the first element (7) of evaporator and the second element (8) of evaporator; besides, the first element (7) of evaporator is located outside refrigerating compartment (3), and the second element (8) of evaporator is located inside refrigerating compartment (3). The first element (7) of evaporator is made in the form of a helix evaporator, envelops refrigerating compartment (3) and includes the pipelines carrying cooling agent, which are wound around the refrigerating compartment and are in heat-carrying contact with it. The first element (7) of evaporator and the second element (8) of evaporator are connected in series; besides, the cooling agent circulating in refrigerating circuit (6) of the refrigerating unit first flows through one evaporator element, and then through the other evaporator element, or they are parallel connected.

EFFECT: increasing efficiency, and cooling or freezing capacity.

6 cl, 1 dwg

FIELD: heating.

SUBSTANCE: invention refers to refrigerating device, in which there installed is evaporator with anti-icing device (4) intended for elimination of ice accretion on tube (3) for cooling agent and/or heat exchanger (2); with that, the above heat exchanger (2) includes tube (3) for cooling agent with expansion point (3.3) having an increasing diameter; at least one branch pipe (3.1) of small diameter and one branch pipe (3.2) of large diameter is connected to heat exchanger (2). Property of invention is that in comparison to front section of tube (3), the above anti-icing device (4) in section to inlet element (3.2.1) of heat exchanger is approximated to branch pipe (3.2) of large diameter and preferably to expansion point (3.3).

EFFECT: effective elimination of evaporator icing.

8 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: cryogenic liquid evaporator includes a housing with cooling agent inlet and outlet chambers, heat exchange elements containing a liquid cooling agent chamber and a central tube equipped with an ejector. Cooling agent inlet and outlet chambers are divided with a partition wall with a hole, heat exchange elements are installed in the partition wall and interconnected with the central tube; the central tube is installed into the hole made in the partition wall with a gap, and the ejector has an insert that controls gaseous cooling agent from liquid cooling agent chambers. Cryogenic liquid evaporator is equipped with a recuperator. Evaporator allows increasing cooling agent use efficiency due to repeated use of cooling agent and arrangement of two-stepped cooling of working substance.

EFFECT: absence of any additional heat source for evaporation of liquid cooling agent and absence in the design of massive heat exchange head pieces additionally increases evaporator operating efficiency and reduces hydraulic resistance of an evaporator.

1 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: invention describes evaporative device (1) designed for obtaining ammonia and use of device (1) in mobile exhaust gas outlet systems; device (1) includes housing (2) with at least one supply pipeline (3) and at least one discharge pipeline (4), in which there provided is at least one heating element (5) and at least one channel (6) for connection of supply pipeline (3) to discharge pipeline (4), and in which at least one heating element (5) is in heat-conducting contact with evaporative section (7) of at least one channel (6), and at least one channel (6) is made on that evaporative section (7) in the form of meander (8). Besides, evaporative section includes at least one tube that is rigidly attached to the housing.

EFFECT: invention differs by compactness and allows obtaining gaseous ammonia with the specified accuracy and completeness.

16 cl, 11 dwg

FIELD: heating.

SUBSTANCE: invention refers to a refrigerating device with a cooling agent circulation system that includes a cooling agent compressor, a condenser, an evaporator with an evaporation plate for heat energy transfer from a refrigerating compartment of the refrigerating device to the cooling agent circulation system, and a temperature sensor for determination of evaporation plate temperature through sensitive surface of temperature sensor, which is connected to the evaporation plate by means of a holder. Holder is made so that immediate contact of sensitive surface of temperature sensor to evaporation plate of the evaporator that is located inside the refrigerating compartment is provided.

EFFECT: use of the present invention allows improved determination of evaporation plate temperature.

10 cl, 5 dwg

FIELD: electrical engineering.

SUBSTANCE: refrigerating apparatus is designed with at least one storage box cooled by an evaporator in the form of a plate and one refrigeration circuit containing such evaporator in the form of a plate. The channel (1) for the evaporator cooling medium is divided into at least two pipeline branches (4, 5) that cool the storage box, are included into the refrigeration circuit in parallel and have gravity centres (9, 10) distanced from each other.

EFFECT: distance between the gravity centres exceeds the ratio of the evaporator surface area to the length of the channel laid along the said evaporator; the invention usage will allow to reduce the refrigerator energy consumption.

9 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: wire-tubular evaporator is provided with guide plate whose body is extended lengthwise and at least one tubular clip for securing the plate to evaporator tube. Tubular clip is mounted on bracket extending aside from plate body.

EFFECT: enhanced accuracy of fitting the guide plate along center line of evaporator.

8 cl, 3 dwg

FIELD: cooling and air conditioning system components, particularly evaporators.

SUBSTANCE: evaporator comprises of the first elongated flat multi-channel pipe having serpentine configuration defined by elbow members bent across the minor dimension thereof. The pipe has a number of spaced apart parallel parts extending between ends of the first pipe. Inlet member of clamping means is connected to the first pipe end, outlet member thereof is fastened to the second end thereof. Ribs are located between neighboring parts of the first pipe. The second elongated flat multi-channel pipe forms suction radiator loop. The second pipe is connected to the first one so that side wall of the second pipe defining major pipe dimension is connected to side wall of the first pipe directly upstream of the outlet member of the clamping means to provide improved heat exchange between the pipes. The second pipe ends are also fitted with inlet and outlet members of clamping means.

EFFECT: increased compactness.

20 cl, 8 dwg

FIELD: refrigeration equipment.

SUBSTANCE: cooling agent evaporator comprises cooling agent pipeline and surface connected to the pipeline through heat-conductive connection. The surface is used as heat-exchanger and is covered with water-repellent oil film. The evaporator may be of lamella type (plate type).

EFFECT: decreased noise during evaporator operation.

3 cl, 1 dwg

FIELD: cooling equipment and other industry, for instance, chemical industry.

SUBSTANCE: evaporator comprises panels or coil pipe batteries, as well as liquid and vapor manifolds with coolant. Panels or coil pipe batteries or manifold batteries extend in horizontal direction one under another and are shifted one from another. The panels or coil pipe batteries or manifold batteries are enclosed with iron sheet having varying height. Panels or coil pipe batteries or manifold batteries are inserted in metal frame fixedly connected with metal tray and hermetically closed with plastic sheets along perimeter thereof.

EFFECT: provision of necessary heat carrier temperature and continuous temperature maintenance, decreased power inputs and heat carrier volume, reduced device costs and increased safety.

1 cl, 1 dwg

FIELD: heating.

SUBSTANCE: milk refrigerating unit contains square reservoir with external heat-insulating coating, evaporator, force-suction manifold of compressor-condenser device. Evaporator is of slot type and represents two halves of V-shaped bottom with injector and suction header each, which are connected accordingly with force and suction manifolds of compressor-condenser device, at that slot evaporator is made with seam welding with seam width of at least 4 mm, pitch of seams of not more than 35 mm, depth rolling of slots of not more than 3 mm.

EFFECT: exclusion of evaporator damage during its flushing with hot water.

4 dwg

Heat exchanger // 2359194

FIELD: mechanics.

SUBSTANCE: invention relates to refrigerating equipment used in climate tests. The proposed heat exchanger comprises a housing and evaporator. The heat exchanger housing is separated by the main baffle into inlet and outlet chambers. The inlet chamber inlet accommodates deflecting baffle. The outlet chamber outlet accommodates the outlet pipe-bend and houses the evaporator and additional baffle. The inlet and outlet chambers communicate via a gap arranged between the main baffle and heat exchanger housing. The fan is arranged between the inlet pipe-bend and the housing. The bypass is provided for between the inlet and outlet pipe-bends.

EFFECT: longer faultless operation of evaporator.

2 cl, 1 dwg

FIELD: personal demand items.

SUBSTANCE: refrigerator with a freezing chamber includes a through internal container with a freezing chamber and a storage compartment for cooled products, which are rigidly connected to each other. There is no connection line or broken edge, at that, evaporator (9) is installed on compartment (6) of the freezing chamber. Evaporator is made in the form of a box with winding, which envelopes the freezing chamber in a circumferential direction on its four sides.

EFFECT: providing more effective cooling of products.

8 cl, 3 dwg

FIELD: heating systems.

SUBSTANCE: anti-frost evaporation tube of refrigerator with drawers consists of internal housing wherein there provided is food storage compartment for arranging drawer-container, and in the latter, low temperature is maintained by means of evaporation tube for cooling agent circulation, which is located around external part of internal housing. Evaporation tube includes curved parts located on both side surfaces of internal housing and straight tube part located on upper surface of internal housing and connected to curved tube parts.

EFFECT: use of this invention allows eliminating frost formation on roof surface of refrigerator internal housing.

5 cl, 7 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to cryogenic equipment, and namely to cryogenic liquid evaporators, and can be used in gasification plants. Cryogenic liquid evaporator includes housing with cryogenic liquid supplying assembly and cooling agent output assembly and heat exchange assembly made in the form of a tube bank, inter-tube space of which includes dump packing. In addition, heat exchange assembly is equipped with gas distributing grid located in lower part of tube bank and having the shape of flattened cone installed with smaller base upwards. Dump packing is located on gas distributing grid.

EFFECT: use of invention will allow more efficient use of thermal and physical properties of heat exchange assembly of cryogenic liquid evaporator owing to arrangement of dump packing with section having constant resistance, and creating conditions of uniform distribution and passing of warm gas vapours through the head piece.

3 dwg

Heat exchanger // 2378586

FIELD: heating.

SUBSTANCE: invention concerns refrigerating engineering. A heat exchanger (301) is designed to be connected to an evaporator (201) of a heat-transfer system wherein a working medium used is compressed and evaporated. The heat exchanger comprises a first tube (107) with its first end (303) shaped in such a way to be attached to an outlet fitting (204) of the evaporator and to transfer the medium from said outlet fitting, and the second tube (108) with its first shaped in such a way to be connected to the inlet fitting of the evaporator and to transfer the medium to said inlet fitting. The second tube is mounted inside of the first tube, or in thermal contact thereto, herewith ensuring the relations (109, 110) of the respective lengths of the first and second tubes to enable heat exchange between the mediums in these tubes. The first tube is made of the steel alloy consisting of ingredients reducing hardness of said steel alloy, thereby easing bend of the tube and enabling to bend the first tube in installation in the heat transfer system.

EFFECT: application of the invention allows reducing cost of the heat exchanger.

31 cl, 10 dwg