CN111829213A

CN111829213A - Evaporative condenser with variable-curvature serpentine coil pipe

Info

Publication number: CN111829213A
Application number: CN202010833181.1A
Authority: CN
Inventors: 周永伟; 胡小华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-10-27

Abstract

The invention relates to the technical field of evaporative condensers, and discloses an evaporative condenser with a variable-curvature serpentine coil, which comprises a gas collecting pipe, wherein a gaseous refrigerant enters a coil group from the gas collecting pipe and is discharged from the liquid collecting pipe, a water pump runs to convey cooling water in a water tank to a cooling main pipe through a water pumping pipe in the flowing process of the gaseous refrigerant, the cooling water is sprayed to the top of the coil group through a distribution pipe and flows downwards along the outer wall surface of the coil group to exchange heat with the gaseous refrigerant in the coil group so that the gaseous refrigerant is condensed into a liquid state, the temperature of the cooling water flowing through the coil group is raised and falls into a filler, the filler increases the contact area of the water and air, the water is rapidly cooled, and the cooled water returns to the water tank and is circulated again through the water pump. Is suitable for large-scale popularization and application.

Description

Evaporative condenser with variable-curvature serpentine coil pipe

Technical Field

The invention relates to the technical field of evaporative condensers, in particular to an evaporative condenser with a variable-curvature serpentine coil.

Background

With the diversification of air conditioning market, the share of the evaporative condensing units rising in these years on the market is increased year by year due to the advantages of high integration, small occupied area, no need of building machine rooms and the like. The core energy-saving heat transfer component of the evaporative condensing unit is an evaporative condenser, the evaporative condenser takes water and air as cooling media, and latent heat of partial water evaporation is utilized to take away heat released in the condensing process of the refrigerant. Because the latent heat energy during water evaporation is large, the temperature of the condenser can be reduced by 2-3 ℃ compared with that of a water cooling unit, and the comprehensive energy efficiency is improved by about 10% and 60% compared with that of the water cooling unit and an air cooling unit respectively;

the evaporative condensers in the market generally adopt coil pipes or straight pipes as heat transfer pipes. However, in practical application, the traditional evaporative condenser generally has the defects of large overall dimension, low space utilization rate, uneven water distribution, more welding seams, easy leakage, inconvenient cleaning, high manufacturing cost and the like;

based on the above, we propose an evaporative condenser with a variable curvature serpentine coil, which hopefully solves the disadvantages of the prior art.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the evaporative condenser with the variable-curvature serpentine coil, which has the advantages of high heat transfer efficiency, compact structure, small overall dimension, easiness in cleaning and simplicity in manufacturing.

(II) technical scheme

In order to realize the purposes of high heat transfer efficiency, compact structure, small overall dimension, easy cleaning and simple manufacture, the invention provides the following technical scheme: an evaporative condenser with a variable-curvature serpentine coil comprises a shell, wherein a box body is arranged at the upper part inside the shell, a coil group is arranged inside the box body, a filler is arranged at the middle part inside the shell, a water tank is arranged at the lower part inside the shell, a water pumping pipe is arranged inside the water tank, the water pumping pipe is fixedly connected to the input end of a water pump, a connecting pipe is arranged at the output end of the water pump, the top end of the connecting pipe is fixedly connected with a cooling main pipe, and the outer wall of the cooling main pipe is connected with a distribution pipe in a penetrating;

the coil pipe group is composed of a plurality of serpentine coils arranged in parallel, and each serpentine coil comprises a first layer of coil pipe, a second layer of coil pipe, a third layer of coil pipe and a fourth layer of coil pipe.

As a preferred technical scheme of the invention, the left side of the shell is provided with an air inlet, the position of the air inlet corresponds to the position of the filler and the position of the box body, the top of the shell is provided with an air outlet, and the top of the air outlet is provided with a fan.

As a preferable technical scheme of the invention, the distribution pipe is positioned above the coil group and corresponds to the serpentine coil.

As a preferable technical scheme of the invention, a guide pipe is transversely arranged at the gap of the coil group, and a support plate is longitudinally and fixedly connected inside the coil group.

As a preferable technical scheme, an inlet is formed in the top end of the serpentine coil, an outlet is formed in the tail end of the serpentine coil, the inlet and the outlet are fixedly connected with a collecting pipe, the outer wall of the collecting pipe at the inlet is connected with a gas collecting pipe in a penetrating mode, and the outer wall of the collecting pipe at the outlet is connected with a liquid collecting pipe in a penetrating mode.

According to a preferable technical scheme, an inlet is formed in the top end of the serpentine coil, an outlet is formed in the tail end of the serpentine coil, tube plates are fixedly connected to the outer walls of the inlet and the outlet, a gas collecting cavity and a liquid collecting cavity are formed in the outer wall of the tube plate, the gas collecting cavity is communicated with the inlet and is communicated with the outlet, a gas collecting pipe is fixedly connected to the outer wall of the gas collecting cavity, and a liquid collecting pipe is fixedly connected to the outer wall of the liquid collecting cavity.

As a preferable technical scheme of the invention, the first layer of coil pipe, the second layer of coil pipe, the third layer of coil pipe and the fourth layer of coil pipe are made of metal or plastic materials, the diameter of the first layer of coil pipe is between 5mm and 50mm, the first layer of coil pipe is provided with a plurality of bending sections, and the number of the bending sections is between 1 and 100.

(III) advantageous effects

Compared with the prior art, the invention provides the evaporative condenser with the variable-curvature serpentine coil, which has the following beneficial effects:

1. this variable camber serpentine coil's evaporative condenser, first layer coil pipe, second floor coil pipe, third layer coil pipe and fourth layer coil pipe constitute serpentine coil pipe, are connected through the backup pad between a plurality of serpentine coil pipes, constitute the coil pipe group, and structural design is compacter, and overall dimension is smaller and more exquisite, and manufacturing process is also fairly simple.

2. This variable camber serpentine coil's evaporative condenser, the top evenly distributed of coil group has the distributing pipe, and the distributing pipe is connected with cooling main, and cooling main is connected with the water pump through the connecting pipe again, sprays the coil group top that cooling water is even through the distributing pipe during water pump operation, and the cooling water forms the water film downstream along the outer wall of coil group, greatly increased heat transfer efficiency, make the inside gaseous state refrigerant of coil group condense into liquid discharge.

3. This evaporative condenser of variable camber serpentine coil, the air intake has been seted up to the casing lateral wall, and the casing top is equipped with the air outlet, and air outlet department installs the fan, and the air gets into from the air intake under the effect of fan, flows through coil group, packs and carries out the heat transfer, finally discharges from the air outlet, and heat exchange efficiency is higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a discrete body of a coil assembly according to the present invention;

FIG. 3 is a partial front view of a coil assembly of the present invention;

FIG. 4 is a schematic view of a first layer of coiled tubing according to the present invention;

FIG. 5 is a schematic view of a second layer coil of the present invention;

FIG. 6 is a schematic view of a third layer of coiled tubing according to the present invention;

FIG. 7 is a schematic view of a fourth layer coil of the present invention;

FIG. 8 is a perspective view of another embodiment of the coil assembly of the present invention;

figure 9 is an elevational view of another configuration of a portion of the coil assembly of the present invention.

In the figure: 1-shell, 2-box, 3-coil group, 301-first layer coil, 302-second layer coil, 303-third layer coil, 304-fourth layer coil, 305-support plate, 306-draft tube, 307-collecting tube, 4-filler, 5-water tank, 6-air outlet, 7-blower, 8-connecting tube, 9-water pump, 10-water pumping tube, 11-distribution tube, 12-cooling header tube, 13-gas collecting tube, 14-liquid collecting tube, 15-tube plate, 16-gas collecting cavity and 17-liquid collecting cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an evaporative condenser with a variable curvature serpentine coil comprises a casing 1, wherein a casing 2 is arranged at the upper part inside the casing 1, a coil group 3 is arranged inside the casing 2, a filler 4 is arranged at the middle part inside the casing 1, a water tank 5 is arranged at the lower part inside the casing 1, a water pumping pipe 10 is arranged inside the water tank 5, the water pumping pipe 10 is fixedly connected to the input end of a water pump 9, a connecting pipe 8 is arranged at the output end of the water pump 9, the top end of the connecting pipe 8 is fixedly connected with a cooling main pipe 12, and the outer wall of the cooling main pipe 12 is connected with;

the coil set 3 is formed of a plurality of serpentine coils arranged in parallel, the serpentine coils including a first layer of coils 301, a second layer of coils 302, a third layer of coils 303 and a fourth layer of coils 304.

In this embodiment, furthermore, the left side of casing 1 is provided with the air intake, and the position of air intake is corresponding with the position of packing 4 and the position of box 2, and the top of casing 1 is provided with air outlet 6, and the top of air outlet 7 is provided with fan 7, and the air gets into from the air intake under the effect of fan 7, flows through coil group 3, packs 4 and carries out the heat transfer, finally discharges from air outlet 6, and heat exchange efficiency is higher.

In this embodiment, further, the distribution pipe 11 is located the top of coil group 3, and corresponds to each other between the snakelike coil, wherein, the distribution hole has been seted up towards one side of coil group 3 to the bottom of distribution pipe 11, and the distribution pipe 11 sprays cooling water to the top of coil group 3, and the cooling water forms the water film downstream along coil group 3 outer wall, carries out the heat transfer to the inside gaseous state refrigerant of coil group 3, makes the gaseous state refrigerant condensate become liquid.

In this embodiment, further, the guide pipe 306 is transversely arranged at the gap of the coil group 3, the support plate 305 is longitudinally and fixedly connected inside the coil group 3, the guide pipe 306 is arranged to enable cooling water to form a stable water film, optionally, the guide pipe 306 is arranged when the gap of the coil group 3 is greater than 10mm, and in order to prevent the insufficient rigidity of the coil group 3, the support plate 305 is adopted to reinforce and fix the coil group.

In this embodiment, further, an inlet is formed in the top end of the serpentine coil, an outlet is formed in the tail end of the serpentine coil, the inlet and the outlet are both fixedly connected with a collecting pipe 307, the outer wall of the collecting pipe 307 at the inlet is connected with a gas collecting pipe 13 in a penetrating manner, and the outer wall of the collecting pipe 307 at the outlet is connected with a liquid collecting pipe 14 in a penetrating manner, as shown in fig. 2-3.

In this embodiment, further, an inlet is formed in the top end of the serpentine coil, an outlet is formed in the tail end of the serpentine coil, a tube plate 15 is fixedly connected to the outer wall of the inlet and the outer wall of the outlet, a gas collecting cavity 16 and a liquid collecting cavity 17 are formed in the outer wall of the tube plate 15, the gas collecting cavity 16 is in through connection with the inlet, the liquid collecting cavity 17 is in through connection with the outlet, a gas collecting pipe 13 is fixedly connected to the outer wall of the gas collecting cavity 16, and a liquid collecting pipe 14 is fixedly connected to the outer wall of the liquid collecting cavity 17.

In this embodiment, the first layer of coils 301, the second layer of coils 302, the third layer of coils 303 and the fourth layer of coils 304 are made of metal or plastic material, have a diameter of 5mm-50mm, and have a plurality of bending sections, the number of the bending sections is 1-100, for example, fig. 4-7, the first bending section of the first layer of coils 301 has a radius of R44, the second bending section has a radius of R11, the third bending section has a radius of R44, and the fourth bending section has a radius of R11 … …, which are alternately changed all the time, in order to enable the multi-layer coils to be arranged on the same plane, the coil group 3 is formed without interference, when the gap between the coils is set to be 11mm, the bending radius of the second layer of coils 302 is changed on the basis of the first layer of coils 301, the first bending radius of the second layer of coils 302 is reduced by the gap distance of R44 to be 11mm to obtain R33, the second bending radius of the second layer of coils 302 is obtained by adding R11 to 11mm to be R22, the subsequent bending sections alternate all the time. The above-mentioned types are pushed out that the two bending section radiuses of the third layer coil pipe 303 are R22 and R33, and the two bending section radiuses of the fourth layer coil pipe 304 are R11 and R44. The coil group 3 can be formed by a plurality of layers of serpentine coils on the same plane by adopting the rule of the change of the bending radius, and the supporting plate 305 is adopted for reinforcing and fixing in order to prevent the insufficient rigidity of the coil group 3. The guide device is arranged at the position with too large gap of the coil group 3, and the guide pipe 306 is adopted in the embodiment.

The working principle and the using process of the invention are as follows:

gaseous refrigerant enters the coil group 3 through the gas collecting pipe 13 and is discharged through the liquid collecting pipe 14, and during flowing in the coil group:

the water pump 9 operates to convey cooling water in the water tank 5 to the cooling main pipe 12 through the water pumping pipe 10, and then the cooling water is sprayed to the top of the coil group 3 through the distribution pipe 11, and the cooling water flows downwards along the outer wall surface of the coil group 3 to exchange heat for the gaseous refrigerant in the coil group 3, so that the gaseous refrigerant is condensed into liquid;

the temperature of the cooling water flowing through the coil group 3 rises and falls to the filler 4 at the lower part, the filler 4 increases the contact area of the water and the air, the water is rapidly cooled, and the cooled water returns to the bottom water tank 5 and is circulated again through the water pump 9;

the air intake has been seted up to 1 lateral wall of casing, and air outlet 6 has been seted up at 1 top of casing, and fan 7 is installed to air outlet 6 department, and the air gets into from the air intake under the effect of fan 7, flows through coil group 3, packs 4 and carries out the heat transfer, finally discharges from air outlet 6, and heat exchange efficiency is higher.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An evaporative condenser with variable-curvature serpentine coil, comprising a shell (1), characterized in that: a box body (2) is arranged at the upper part inside the shell (1), a coil group (3) is arranged inside the box body (2), a filler (4) is arranged at the middle part inside the shell (1), a water tank (5) is arranged at the lower part inside the shell (1), a water pumping pipe (10) is arranged inside the water tank (5), the water pumping pipe (10) is fixedly connected to the input end of a water pump (9), a connecting pipe (8) is arranged at the output end of the water pump (9), a cooling main pipe (12) is fixedly connected to the top end of the connecting pipe (8), and a distribution pipe (11) is connected to the outer wall of the cooling main pipe (12) in a penetrating manner;

the coil group (3) is composed of a plurality of serpentine coils arranged in parallel, and each serpentine coil comprises a first layer of coil (301), a second layer of coil (302), a third layer of coil (303) and a fourth layer of coil (304).

2. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: the left side of casing (1) is provided with the air intake, the position of air intake and the position of packing (4) and box (2) are corresponding, the top of casing (1) is provided with air outlet (6), the top of air outlet (7) is provided with fan (7).

3. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: the distribution pipe (11) is positioned above the coil group (3) and corresponds to the snake-shaped coil.

4. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: a guide pipe (306) is transversely arranged at the gap of the coil group (3), and a support plate (305) is longitudinally and fixedly connected inside the coil group (3).

5. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: the top end of the serpentine coil is provided with an inlet, the tail end of the serpentine coil is provided with an outlet, the inlet and the outlet are fixedly connected with a collecting pipe (307), the outer wall of the collecting pipe (307) at the inlet is connected with a gas collecting pipe (13) in a penetrating way, and the outer wall of the collecting pipe (307) at the outlet is connected with a liquid collecting pipe (14) in a penetrating way.

6. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: the improved structure of the coiled pipe is characterized in that an inlet is formed in the top end of the coiled pipe, an outlet is formed in the tail end of the coiled pipe, a pipe plate (15) is fixedly connected to the outer wall of the inlet and the outer wall of the outlet, a gas collecting cavity (16) and a liquid collecting cavity (17) are formed in the outer wall of the pipe plate (15), the gas collecting cavity (16) is in through connection with the inlet, the liquid collecting cavity (17) is in through connection with the outlet, a gas collecting pipe (13) is fixedly connected to the outer wall of the gas collecting cavity (16), and a liquid collecting pipe (14) is fixedly.

7. The evaporative condenser of a variable curvature serpentine coil as recited in claim 1, wherein: the first layer of coil pipe (301), the second layer of coil pipe (302), the third layer of coil pipe (303) and the fourth layer of coil pipe (304) are made of metal or plastic materials, have the diameter of 5mm-50mm, and are provided with a plurality of bending sections, and the number of the bending sections is 1-100.