The utility model content
The utility model is in order to overcome weak point of the prior art, and a kind of heat exchanger tube monomer and bridge piece variation and the heat exchanger tube unit that changes along with cold-producing medium specific volume in heat exchanger tube is provided.
Another purpose of the utility model provides a kind ofly emits heat at refrigerant gas and condenses into that heat exchanger tube and bend pipe diameter dwindle gradually in the process of liquid, to reduce metal consumption, reduces the fin tube type air-cooled condenser of product cost.
Another purpose of the utility model is cold-producing medium in the process of the heat of vaporization gasification that absorbs outside air heat exchanger tube increases with the bend pipe diameter gradually, to reduce fluid resistance losses, provides the fin tube type of performance of refrigerant systems to cool off air evaporator.
The utility model is realized through following technical proposals:
A kind of heat exchanger tube unit; Comprise the many heat exchanger tube monomers that laterally arrange; The heat exchanger tube monomer is through the bend pipe formation heat exchanging medium passage that joins end to end; It is characterized in that the heat exchanger tube monomer diameter of the adjacent arrangement of direction that increases along gas specific volume increases gradually, being used for the end to end bend pipe of heat exchanger tube monomer is gradual change footpath bend pipe.
A kind of fin tube type air-cooled condenser that uses the convergent footpath bend pipe connection of above-mentioned heat exchanger tube unit; The many heat exchanger tube monomers that laterally arrange join end to end through bend pipe and form a heat exchanger tube unit; A plurality of heat exchanger tubes unit is set up in parallel; The gas service pipes that each heat exchanger tube unit one end passes through separately respectively is connected with gas inlet tube, and the liquid tube connector that the other end of each heat exchanger tube unit passes through separately respectively is connected with collector tube, it is characterized in that; The heat exchanger tube monomer diameter of the adjacent arrangement of direction along gas inlet tube to collector tube reduces gradually, and being used for the end to end bend pipe of heat exchanger tube monomer is convergent footpath bend pipe.
A kind of cooling air evaporator that uses the flaring footpath bend pipe connection of above-mentioned heat exchanger tube unit; The many heat exchanger tube monomers that laterally arrange join end to end through bend pipe and form a heat exchanger tube unit; A plurality of heat exchanger tubes unit is arranged side by side; The return-air tube connector that each heat exchanger tube unit one end passes through separately respectively is connected with discharge, and the liquid distributing pipe that the other end of each heat exchanger tube unit passes through separately respectively is connected with separating tube, it is characterized in that; The heat exchanger tube monomer diameter of the adjacent arrangement of direction along the liquid distributing pipe to discharge increases gradually, and being used for the end to end bend pipe of heat exchanger tube monomer is flaring footpath bend pipe.
The utlity model has following technique effect:
Heat exchanger tube monomer in the heat exchanger tube unit of the utility model and bend pipe diameter change according to the variation of gas specific volume, the shortcoming that can avoid single diameter heat exchanger tube monomer and bend pipe to produce.For the fin tube type air-cooled condenser, condense in the process of liquid at refrigerant gas, along with specific volume reduces gradually, heat exchanger tube and bend pipe diameter dwindle gradually, can reduce metal consumption, reduce product cost.For the cooling air evaporator, in cold-producing medium evaporation gasification, along with the increase gradually of specific volume, the diameter of heat exchanger tube and bend pipe also increases thereupon gradually, can reduce flow losses, reduces pressure ratio, reduces wasted work, improves the performance of refrigeration system.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Fig. 1 is the sketch map of the utility model heat exchanger tube unit; Comprise the many heat exchanger tube monomers 1 that laterally arrange; The heat exchanger tube monomer is through the bend pipe 2 formation heat exchanging medium passage that joins end to end; The heat exchanger tube monomer diameter of the adjacent arrangement of direction that increases along gas specific volume increases gradually, and being used for the end to end bend pipe of heat exchanger tube monomer is gradual change footpath bend pipe.
The heat exchanger tube unit of the utility model can be formed products such as air-cooled condenser, cooling air evaporator according to the environment for use needs, and the heat exchanger tube unit can horizontally-arranged, vertical setting of types, and the heat exchanger tube monomer in the heat exchanger tube unit can in line, wrong row, V-type arrangement etc.
Below forming by 4 heat exchanger tube unit, the fin tube type air-cooled condenser that each heat exchange unit contains 8 heat exchanger tube monomers of vertically arranging is that example is elaborated.
The sketch map of the fin tube type air-cooled condenser that the utility model convergent footpath bend pipe connects such as Fig. 2-shown in Figure 5; Comprise 4 heat exchanger tube unit arranged side by side; Each heat exchanger tube unit comprises first row's heat exchanger tube monomer 11 of laterally arranging, second row's heat exchanger tube monomer 13, the 3rd row's heat exchanger tube monomer 14, the 4th row's heat exchanger tube monomer 16, the 5th row's heat exchanger tube monomer 17, the 6th row's heat exchanger tube monomer 19, the 7th row's heat exchanger tube monomer 20, the 8th row's heat exchanger tube monomer 22; Wherein, first row's heat exchanger tube monomer, 11 diameters<second row's heat exchanger tube monomer, 13 diameters<the 3rd row's heat exchanger tube monomer 14 diameters<the 4th row's heat exchanger tube monomer 16 diameters<the 5th row's heat exchanger tube monomer 17 diameters<the 6th row's heat exchanger tube monomer 19 diameters<the 7th row's heat exchanger tube monomer 20 diameters<the 8th row's heat exchanger tube monomer 22 diameters.Minor diameter one side of first convergent footpath bend pipe 6 is connected with a side of the 6th row's heat exchanger tube 19, and major diameter one end of first convergent footpath bend pipe 6 is connected with an end of the 7th row's heat exchanger tube 20; Minor diameter one end of second convergent footpath bend pipe 7 is connected with an end of the 4th row's heat exchanger tube 16, and major diameter one end of second convergent footpath bend pipe 7 is connected with an end of the 5th row's heat exchanger tube 17; Minor diameter one end of the 3rd convergent footpath bend pipe 8 is connected with an end of second row's heat exchanger tube 13, and major diameter one end of the 3rd convergent footpath bend pipe 8 is connected with an end of the 3rd row's heat exchanger tube 14; Minor diameter one end of the 4th convergent footpath bend pipe 12 is connected with an end of first row's heat exchanger tube 11, and major diameter one end of the 4th convergent footpath bend pipe 12 is connected with the other end of second row's heat exchanger tube 13; Minor diameter one end of the 5th convergent footpath bend pipe 15 is connected with the other end of the 3rd row's heat exchanger tube 14, and major diameter one end of the 5th convergent footpath bend pipe 15 is connected with the other end of the 4th row's heat exchanger tube 16; Minor diameter one end of the 6th convergent footpath bend pipe 18 is connected with the other end of the 5th row's heat exchanger tube 17, and major diameter one end of the 6th convergent footpath bend pipe 18 is connected with the other end of the 6th row's heat exchanger tube 19; Minor diameter one end of the 7th convergent footpath bend pipe 21 is connected with the other end of the 7th row's heat exchanger tube 20; Major diameter one end of the 7th convergent footpath bend pipe 21 is connected with an end of the 8th row's heat exchanger tube 22; Like this, 8 heat exchanger tube monomers join end to end through convergent footpath bend pipe and form a heat exchanger tube unit.The other end of the row's heat exchanger tube 22 of the 8th in each heat exchanger tube unit is connected with an end of gas service pipes 5 respectively; The other end of gas service pipes 5 is connected with gas inlet tube 4; The other end of the row's heat exchanger tube 11 of first in each heat exchanger tube unit is connected with an end of liquid tube connector 9 respectively, and the other end of liquid tube connector 9 is connected with collector tube 10.The nest plate 24 of band flange is enclosed within outside heat exchanger tube monomer of each row, and left gripper shoe 23, right gripper shoe 3 are respectively in the both sides of the nest plate heap of band flange.
During use the outlet of flue 4 with the blast pipe of refrigeration system compressor is connected, collector tube 10 is connected with the inlet of heating power expansion valve.The HTHP refrigeration working medium that refrigeration compressor is discharged gets into flue 4 in gas service pipes 5 distributes each heat exchanger tube that gets into the 8th row's heat exchanger tube 22, and the bend pipe 21 through the 7th convergent footpath gets in each heat exchanger tube of the 7th row's heat exchanger tube 20; The bend pipe 6 through first convergent footpath gets in each heat exchanger tube of the 6th row's heat exchanger tube 19, the bend pipe 18 through the 6th convergent footpath; Get in each heat exchanger tube of the 5th row's heat exchanger tube 17, the bend pipe 7 through second convergent footpath gets in each heat exchanger tube of the 4th row's heat exchanger tube 16; The bend pipe 15 through the 5th convergent footpath gets in each heat exchanger tube of the 3rd row's heat exchanger tube 14, the bend pipe 8 through the 3rd convergent footpath; Get in each heat exchanger tube of second row's heat exchanger tube 13; The bend pipe 12 through the 4th convergent footpath gets in each heat exchanger tube of first row's heat exchanger tube 11, then gets into collector tube 10 eductor condensers through each liquid tube connector 9 respectively; The refrigeration working medium of HTHP is externally emitted heat in the passage that heat exchanger tube, convergent footpath bend pipe are connected to form, accomplish the cooling condensation process.
The nest plate number of the material of heat exchanger tube monomer, wall thickness, length, diameter, row's number of heat exchanger tube unit, every row's heat exchanger tube monomer number in the fin tube type air-cooled condenser that the utility model convergent footpath bend pipe connects, the convergent footpath bend pipe number that connects the heat exchanger tube monomer of adjacent rows, gas service pipes and liquid tube connector number and band flange, the height of nest plate flange are determined by the heat exchange area of total air-cooled condenser that the heat dissipation capacity and the operating condition of the high temperature refrigerant of refrigeration system calculates; The arrangement of pipe can be in line, wrong row and V-type arrangement etc., and the inwall of heat exchanger tube monomer can be smooth or has an interior wing.The fin of the air-cooled condenser of the utility model can be above-mentioned whole the nest plate outside the set of heat exchange tubes that be enclosed within; Can also be shown in Figure 10 respectively outside single heat exchange tube around sheet, around the heat exchange area decision by total air-cooled condenser such as the width of sheet, thickness, material, sheet spacing.
The fin tube type air-cooled condenser that utilizes the convergent footpath bend pipe of the utility model to connect can be used as the air cooled condenser of various refrigeration systems.Simple in structure, nest plate adds only need adjust nest plate punching, flanging die man-hour, and expand tube head and angle pipe equipment are easy to operate, environmental protection and energy saving.
Below forming by 8 heat exchanger tube unit, it is that example is elaborated that each heat exchange unit contains the cooling air evaporator that the flaring footpath bend pipe of 4 transversely arranged heat exchanger tube monomers connects
The sketch map of the cooling air evaporator that the utility model flaring footpath bend pipe connects such as Fig. 6-shown in Figure 9,
Comprise 8 heat exchanger tube unit arranged side by side, each heat exchanger tube unit comprises that the first row's heat exchanger tube monomer 34, second that laterally arranges is arranged heat exchanger tube monomer 36, the 3rd row's heat exchanger tube monomer the 37, the 4th is arranged heat exchanger tube monomer 38.The heat exchanger tube monomer diameter of the adjacent arrangement of direction along the liquid distributing pipe to discharge increases gradually; Being used for the end to end bend pipe of heat exchanger tube monomer is flaring footpath bend pipe, that is: first row's heat exchanger tube monomer, 34 diameters<second row's heat exchanger tube monomer, 36 diameters<the 3rd row's heat exchanger tube monomer 37 diameters<the 4th row's heat exchanger tube monomer 38 diameters.Minor diameter one end of second flaring footpath bend pipe 35 is connected with an end of first row's heat exchanger tube 34; Major diameter one end of second flaring footpath bend pipe 35 is connected with an end of second row's heat exchanger tube 36; Minor diameter one end of the 3rd flaring footpath bend pipe 25 is connected with an end of the 3rd row's heat exchanger tube 37; Major diameter one end of the 3rd flaring footpath bend pipe 25 is connected with an end of the 4th row's heat exchanger tube 38, and minor diameter one end of first flaring footpath bend pipe 31 is connected with the other end of second row's heat exchanger tube 36, and major diameter one end of first flaring footpath bend pipe 31 is connected with the other end of the 3rd row's heat exchanger tube 37; Like this, 4 heat exchanger tube monomers join end to end through flaring footpath bend pipe and form a heat exchanger tube unit.The return-air tube connector 30 that the other end of the 4th row's heat exchanger tube 38 passes through separately respectively in each heat exchanger tube unit is connected with discharge 29, and the liquid distributing pipe 33 that the other end of first row's heat exchanger tube 34 passes through separately respectively in each heat exchanger tube unit is connected with separating tube 32.The fin 27 of band flange is enclosed within outside heat exchanger tube monomer of each row, and left gripper shoe 26, right gripper shoe 28 are respectively in the both sides of the nest plate heap of band flange.
During use, the outlet of separating tube 32 with the heating power expansion valve of refrigeration system is connected, discharge 29 is connected with the muffler of refrigeration compressor.Get into separating tube 32 in liquid distributing pipe 33 distributes the first row's heat exchanger tube monomer 34 that gets into each heat exchanger tube unit through the low-temp low-pressure refrigeration working medium after the step-down of damming; Get in second row's heat exchanger tube monomer 36 through second flaring footpath bend pipe 35; Get in the 3rd row's heat exchanger tube monomer 37 through first flaring footpath bend pipe 31; Get in the 4th row's heat exchanger tube 38 through the 3rd flaring footpath bend pipe 25, then get in the discharge 29 through each return-air tube connector 30 respectively and get back to compressor.The refrigeration working medium of low-temp low-pressure absorbs the heat of outside air in the passage that first row's heat exchanger tube monomer 34, second flaring footpath bend pipe 35, second row's heat exchanger tube monomer 36, first flaring footpath bend pipe 31, the 3rd row's heat exchanger tube monomer 37, the 3rd flaring footpath bend pipe 25, the 4th row's heat exchanger tube monomer 38 are connected to form, air is cooled.
The nest plate number of the material of the heat exchanger tube monomer of the cooling air evaporator of the utility model, wall thickness, length, diameter, heat exchanger tube row of cells number, every row's heat exchanger tube monomer number, the flaring footpath bend pipe number that connects the heat exchanger tube monomer of adjacent rows, return-air tube connector and liquid distributing pipe number and band flange, the height of nest plate flange are determined by the heat exchange area of total cooling air evaporator that the refrigerating capacity and the operating condition of refrigeration system calculates; The arrangement of pipe can be in line, wrong row etc., and the inwall of heat exchanger tube monomer can be smooth or has an interior wing.The fin of the cooling air evaporator of the utility model can be to be enclosed within whole outer nest plate of set of heat exchange tubes; Can also be shown in Figure 10 respectively outside single heat exchange tube around sheet, around the heat exchange area decision by total cooling air evaporator such as the width of sheet, thickness, material, sheet spacing.
The cooling air evaporator that utilizes the flaring footpath bend pipe of the utility model to connect can be used for the air cooling in the cold space of usefulness of refrigeration systems such as freezer, refrigerator, air-conditioning.