HEAT EXCHANGE UNIT FOR DEVICES WITH A HEAT PUMP, IN PARTICULAR AN EVAPORATOR FOR MANUFACTURING AND STORING ICE

Abstract

The unit comprises two similar heat exchangers (2.1, 2.2) included in the thermodynamic medium circuit through an inlet collectors (7.1, 7.2) and outlet collectors (8.1, 8.2), wherein the inlet collectors (7.1, 7.2) are connected with the outlet collectors (8.1, 8.2) through the perpendicular tubular flow channels (5.1, 5.2), wherein final sections (10.1, 10.2) of the flow channel connections (5.1, 5.2) to the outlet collector (8.1, 8.2) are bent off the plate of the radiator (4) common for both exchangers (2.1, 2.2) by a dimension (e) greater that half the sum of the outside diameters of the inlet (7.1, 7.2) and outlet collector (8.1, 8.2), wherein the tubular nozzle distributors, having many nozzle orifices on the side, directed coaxially to the flow channels (5.1, 5.2), are introduced to the inside of the inlet collectors (7.1, 7.2), wherein the diameters of the nozzle orifices increase successively from the end of the thermodynamic medium supply.

Claims

1. A heat exchange unit for the devices with a heat pump, in particular an evaporator in the device for manufacturing and storing ice, comprising a heat exchanger (2,3) included in the thermodynamic medium circuit through an inlet collector (7.1, 7.2) and an outlet collector (8.1, 8.2), which in a parallel position are connected through the perpendicular tubular flow channels (5.1, 5.2) and connected with the plate of the radiator (4), moreover, wherein the tubular nozzle distributor (11), having many nozzle orifices (12) on the side, directed coaxially to the flow channels (5), and whose diameters d3 increase successively from the end of the thermodynamic medium supply is inserted longitudinally to the inside of the inlet collectors (7.1, 7.2), characterized in that the unit consists of two similar heat exchangers (2, 3) incorporated simultaneously in the heat pump circuit, where the flow channels (5.1, 5.2) have the final sections (10.1, 10.2) of the connections to the outlet collector (8.1, 8.2) bent off the radiator plate (9-9)determined by long, straight sections of the flow channels (5.1, 5.2) coming out from the inlet collector (7.1, 7.2)by a dimension (e) greater than half the sum of the outside diameters (d1, d2) of the inlet (7.1, 7.2) and outlet (8.1, 8.2) collector, the heat exchangers (2, 3) being superimposed so that the straight long sections of the flow channels (5.1, 5.2) alternate with each other in the plane of the radiator (9-9) and are connected with one, common plate of the radiator (4), the inlet collector (7.1) of the first exchanger (2) and the outlet collector (8.2) of the second exchanger (3) are located parallel to each other on both sides of such unit and on the other side the inlet collector (7.2) of the second exchanger (3) and the outlet collector (8.1) of the first exchanger (2), moreover, the nozzle distributors (11) of the first (2) and second exchanger (3) are built into the adjacent ends of both inlet collectors (7.1, 7.2).

2. The heat exchange unit according to claim 1, characterized in that the inter-collector insulating strip (14) is introduced on both sides of the unit between the inlet collectors (7.1, 7.2) and the outlet collector (8.1, 8.2) of the exchangers (2, 3).

3. The heat exchange unit according to claim 1, characterized in that in construction conditions with a horizontal location of the radiator plane (9-9), the inlet collectors (7.1, 7.2) in both heat exchangers (2, 3) are located above the outlet collectors (8.1, 8.2).

4. The heat exchange unit according to claim 1, characterized in that the surface between the outlet collectors (8.1, 8.2) of both exchangers (2, 3) is covered by a counter-plate (6) that adheres to the flow channels (5.1, 5.2).

5. The heat exchange unit according to claim 4, characterized in that in construction conditions with a horizontal location of the radiator plane (9-9), the counter-plate is made of a material with a low thermal conductivity coefficient.

6. The heat exchange unit according to claim 1, characterized in that the areas of adjacent pairs of the inlet collector (7.1, 7.2) and outlet collector (8.2, 8.1), on both sides of the unit (1), are longitudinally covered by the edge thermal insulation (15).

Description

[0014] FIG. 1unit diagram

[0015] FIG. 2unit in a perspective view,

[0016] FIG. 3vertical cross-section through the axis of the flow channel of the first exchanger,

[0017] FIG. 4 and FIG. 5the middle fragments of the vertical cross-sections of two exemplary embodiments of the heat exchange surface, according to the line A-A in FIG. 2,

[0018] FIG. 6a vertical cross-section of the unit according to the line C-C in FIG. 2 through the axis of the flow channel of the first heat exchanger,

[0019] FIG. 7a vertical cross-section of the unit according to the line D-D in FIG. 2 through the axis of the flow channel of the second heat exchanger,

[0020] FIG. 8a vertical cross-section of the left side of the heat exchange unit, with a counter-plate and edge thermal insulation.

[0021] The heat exchange unit 1 consists of two similar tubular heat exchangers 2 and 3 incorporated simultaneously in the circuit of the thermodynamic medium of the heat pump. The unit can perform both the evaporator and condenser functions, working in horizontal or vertical positioning. Each of the exchangers 2 and 3 with a harp system has parallel inlet collector 7 and outlet collector 8 spaced apart. The collectors 7.1 and 8.1 of the first exchanger 2 and the collectors 7.2 and 82. of the second exchanger 3 are connected by numerous tubular flow channels 5.1 and 5.2 located perpendicular. Final sections 10.1 and 10.2 of flow channel connections 5.1 and 5.2 to the outlet collector 8.1, 8.2 are deflected by a dimension (e) greater than half the sum of the outside diameters d1 of the inlet collector 7.1 and 7.2 and the diameter d2 of the outlet collector 8.1 and 8.2as shown in FIG. 3 of the drawing. With superimposing the exchangers 2 and 3, the inlet collector 7.1 of the first exchanger 2 and the outlet collector (8.2) of the second exchanger 3 are located parallel to each other on both sides of the heat exchange unit 1 and on the other side the inlet collector 7.2 of the second exchanger 3 and the outlet collector 8.1 of the first exchanger 2. The flow channels 5.1 and 5.2 are connectedwhile maintaining good thermal conductivityby the plate of the radiator 4 made of a material with high thermal conductivity coefficient between the inlet collectors 7.1 and 7.2 of both exchangers 2 and 3. Tubular nozzle distributors 11, having many nozzle orifices 12 on the side, directed coaxially to the inlets 13 of the flow channels 5.1 and 5.2, are introduced longitudinally to the inside of the inlet collectors 7.1 and 7.2. The diameters d3 of the nozzle orifices 12 increase successively from the end of the thermodynamic medium supply. Inter-collector insulating strips 14 which thermally separate the pipelines through which fluids of different temperatures flow are introduced on both sides of the unit between the inlet collectors 7.1, 7.2 and the outlet collectors 8.1, 8.2.

[0022] In conditions shown in FIGS. 6 and 7 and with horizontal installation of the heat exchange unit, the inlet collectors 7.1 and 7.2 in both heat exchangers 2 and 3 are arranged above the outlet collectors 8.1 and 8.2. FIG. 8 shows the implementation of the unit incorporated into the heat pump circuit as an evaporator, installed horizontally, where the surface between the outlet collectors 8.1 and 8.2 of both exchangers 2 and 3 is covered by a counter-plate 6 of thermally insulating material. Grooves including the flow channels 5.1 and 5.2 are performed in the counter-plate 6, which allows the counter-board 6 to adhere to the plate of the radiator 4. Using the unit in the ice-making device is supplemented by the incorporation of edge thermal insulations 15, comprising pair of the inlet collectors 7.1, 7.2 and outlet collectors 8.2, 8.1 adjacent longitudinally to each other on both sides. In the operation of the deviceuniformity of temperature over the entire surface of the radiator, obtained as a result of local equalization of the amount of heat supplied to the radiator by contiguous counter-current flows of thermodynamic media in the phases of physical transition with a constant parameter differenceis essential for the production efficiency and storage capacity of the ice in the device.

LIST OF INDICATIONS IN THE FIGURE

[0023] 1. heat exchange unit [0024] 2. first heat exchanger [0025] 3. second heat exchanger [0026] 4. plate of the radiator [0027] 5. flow channels [0028] 5.1 flow channels of the first exchanger [0029] 5.2 flow channels of the second exchanger [0030] 6. counter-plate [0031] 7. inlet collector [0032] 7.1 inlet collector of the first exchanger [0033] 7.2 inlet collector of the second exchanger [0034] 8. outlet collector [0035] 8.1 outlet collector of the first exchanger [0036] 8.2 outlet collector of the second exchanger [0037] 9-9 radiator plane [0038] 10. flow channel final section [0039] 10.1 flow channel final section of the first exchanger [0040] 10.2 flow channel final section of the second exchanger [0041] 11. tubular nozzle distributor [0042] 12. nozzle orifice [0043] 13. flow channel inlet [0044] 14. inter-collector insulating strip [0045] 15. edge thermal insulation [0046] e. the dimension of the inlet collector offset relative to the outlet collector d1. outside diameter of the inlet collector [0047] d2. outside diameter of the outlet collector [0048] d3. diameter of the nozzle orifice [0049] k. the flow direction of the thermodynamic medium