CN107477923A - A kind of evaporative condenser - Google Patents

Abstract

The invention discloses an evaporative condenser, which comprises a box-shaped structure outer frame and a plurality of parallel plate-shaped serpentine integral inflation heat exchange tubes installed in the outer frame. The heat exchange plate of aluminum plate structure and the serpentine heat exchange tube formed by blowing on the heat exchange plate; there is an air inlet on the lower side of the outer frame, an air outlet on the top, and a fan at the air outlet. There are multiple water nozzles between the heat pipes, and the water nozzles are installed on the water supply pipes. The inlet ends of the multiple serpentine overall inflation heat exchange tubes are connected to the gas distribution pipe, and the liquid outlets are connected to the liquid collection pipe. The piping and the liquid collecting pipe are on the same side, and the upper and lower adjacent elbows of the serpentine integral blown heat exchange pipe are respectively connected with liquid discharge pipes. The invention can effectively reduce heat resistance, effectively utilize heat exchange area, reduce heat transfer temperature difference, reduce pressure ratio of refrigeration cycle, reduce power consumption of refrigeration compressor, improve performance of refrigeration system, and reduce external dimensions.

Description

An evaporative condenser

technical field

The invention relates to the technical field of refrigeration, in particular to an evaporative condenser.

Background technique

The evaporative condenser saves water resources, the water system is simple, and the heat transfer effect is better than that of the air-cooled condenser. It is used more and more in refrigeration and air-conditioning systems. The high-temperature and high-pressure refrigerant gas discharged from the refrigeration compressor is The heat exchange tube of the evaporative condenser exchanges heat with the air flowing outside the tube, and the water droplets sprayed on the surface of the heat exchange tube evaporate to take away heat, and the refrigerant releases heat and condenses into a high-pressure liquid. The heat pipe is a light pipe with a large heat exchange area, large overall dimensions, and a large heat transfer temperature difference, resulting in high condensation temperature, resulting in increased power consumption of the refrigeration compressor and a decrease in the thermal performance of the system. If the heat transfer area is effectively increased and the heat transfer effect is enhanced, the heat transfer temperature difference can be reduced, the condensation temperature can be reduced, and the external dimension conditions can be reduced. Therefore, a high-efficiency evaporative condenser is developed to use the drain pipe to discharge the condensed liquid during the refrigerant flow process. , to reduce the thermal resistance, to reduce the heat transfer temperature difference, reduce the pressure ratio of the refrigeration compressor, reduce the power consumption of the refrigeration compressor, improve the performance of the refrigeration system, and achieve energy saving and environmental protection, which is of great significance.

Contents of the invention

The object of the present invention is to provide an evaporative condenser aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of the present invention is:

An evaporative condenser, comprising a box-shaped outer frame and a plurality of serpentine integral blown heat exchange tubes arranged in parallel in the plate structure, the serpentine integral blown heat exchange tubes The tube includes a heat exchange plate with a double-layer aluminum plate structure and a serpentine heat exchange tube formed on the heat exchange plate by inflation; there is an air inlet on the lower side of the outer frame, and an air outlet on the top. A fan is installed, and a plurality of water nozzles are arranged between the fan and the serpentine overall inflation heat exchange tube, the water nozzles are installed on the water supply pipe, and a plurality of the serpentine overall inflation heat exchange tubes The inlet ends of the tubes are commonly connected to the gas distribution pipes for distributing the refrigerant gas into a plurality of said serpentine integral blown heat exchange tubes, and the liquid outlets are commonly connected to the liquid collection pipes; The position of the bend of the serpentine overall inflation heat exchange tube on the same side, and the corresponding positions of the upper and lower adjacent bends are respectively connected with drain pipes.

The water supply pipe is welded to the water outlet of the water pump, and the corresponding water outlet orifice of the water supply pipe is welded to the water spray outlet.

The gas distribution pipe is welded to the exhaust pipe of the refrigeration compressor, and the liquid collecting pipe is welded to the inlet connection pipe of the throttling and pressure-reducing element.

The orifices of the gas distribution pipe are respectively welded to the corresponding circular orifices on one side of the serpentine integral inflatable heat exchange tube, and the circular orifices on the other side of the serpentine integral inflatable heat exchange tube The circular orifices corresponding to the liquid collecting pipes are respectively welded and connected.

The integral blown heat exchange tube is fixed in the outer frame by a heat exchange tube fixing bracket.

The fan motor is fixedly connected by a fan bracket, and the fan bracket is fixed on the top of the outer frame.

In the present invention, a plurality of plate-shaped serpentine overall blown heat exchange tubes are arranged in parallel and fixed in the outer frame. There is an air inlet at the lower part of the outer frame, and a fan is installed at the top air outlet, and the refrigerant is discharged through the liquid discharge pipe between the elbows. The liquid condensed by the gas in the flow process can effectively increase the heat transfer area, reduce the heat transfer temperature difference, reduce the pressure ratio of the refrigeration cycle, reduce the power consumption of the refrigeration compressor, improve the performance of the refrigeration system, reduce the overall size, and realize energy saving Environmental friendly.

Description of drawings

Fig. 1 is the B-B direction sectional view of the evaporative condenser of Fig. 2;

Fig. 2 is an A-A sectional view of the evaporative condenser in Fig. 1 .

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Figure 1-2, an evaporative condenser includes:

The outer frame 5 of the box-type structure, the serpentine integral inflation heat exchange tube 4 installed in the outer frame 5, the serpentine integral inflation heat exchange tube 4 is a plate structure, arranged in parallel, each of the serpentine The overall blown heat exchange tube includes a heat exchange plate with a double-layer aluminum plate structure and a serpentine heat exchange tube formed by inflation on the heat exchange plate (that is, between the double-layer aluminum plates), and the lower side of the outer frame 5 There is an air inlet 7 and an air outlet on the top, and a fan 3 is installed at the air outlet, and a plurality of water spray ports 11 are arranged between the fan and the serpentine integral inflation heat exchange tube, and the water spray ports Installed on the water supply pipe 9, the inlet ends of the plurality of serpentine integral blown heat exchange tubes 4 are commonly connected to gas distribution pipes for distributing refrigerant gas into the plurality of serpentine integral blown heat exchange tubes 12. The liquid outlet is jointly connected to the liquid collection pipe 13, which is formed at the elbow position of the serpentine integral inflation heat exchange tube 4 on the same side as the gas distribution pipe 12 and the liquid collection pipe 13, and the corresponding positions of the upper and lower adjacent elbow pipes The liquid discharge ports are respectively connected to the upper and lower ends of the liquid discharge pipe 10, so as to discharge the liquid condensed by the refrigerant gas in the upper serpentine overall inflation heat exchange tube 4 during the flow process to the lower layer, and discharge layer by layer, and finally to the bottom snake. Formed integral blowing heat exchange tube 4, and finally discharged through the liquid collection pipe.

Since each serpentine integral blown heat exchange tube 4 has a refrigerant gas inlet and a liquid discharge port, when a plurality of said serpentine integral blown heat exchange tubes 4 are working, in order to distribute the refrigerant gas into the serpentine In the overall expansion heat exchange tube 4, the liquid formed after cooling is discharged, so the gas distribution pipe 12 is used to distribute the refrigerant gas, and the liquid collection pipe is used to concentrate the liquid discharge.

Each of the serpentine overall blown heat exchange tubes 4 is formed by two layers of aluminum plates. The pipeline part between the two layers of aluminum plates is sprinkled with graphite powder and then hot-pressed. The compressed air is blown into a hollow circular pipeline and bent. A serpentine refrigerant fluid pipeline with integral fins is formed.

Wherein, the plurality of distribution orifices of the gas distribution pipe 12 are respectively welded and connected to the circular orifices corresponding to one side of the plurality of serpentine integral inflation heat exchange tubes 4, and the plurality of serpentine integral inflation heat exchange tubes 4 are connected by welding. The circular openings on the other side of the heat pipe 4 are respectively welded to a plurality of circular openings corresponding to the liquid collecting pipe 13 .

Wherein, the integral inflation heat exchange tube 4 is arranged in the outer frame by fixing the corresponding positions of the heat exchange tube fixing bracket 6 and the outer frame 5 .

Wherein, the water supply pipe 9 is welded to the water outlet of the water pump 8 , and a plurality of openings of the water supply pipe 9 are welded to the water spray outlet 11 .

Wherein, the fan 3 cooperates with the fan motor 2 , the fan motor 2 is fixedly connected with the fan bracket 1 , and the fan bracket 1 is fixed on the top of the outer frame 5 .

During specific use, the gas distribution pipe 12 is welded to the exhaust pipe of the refrigeration compressor, and the liquid collecting pipe 13 is welded to the inlet connection pipe of the throttling and pressure-reducing element.

When the refrigeration system is running, the high-temperature and high-pressure refrigerant gas discharged from the refrigeration compressor enters the serpentine integral blowing heat exchange tube 4 through the gas distribution pipe 12, and is mixed with the air flowing outside the heat exchange tube and sprayed by the water nozzle. The heat exchange of water droplets outside the tube releases heat, the condensed liquid is discharged through the discharge pipe 10 during the flow, and finally the condensed liquid flows out through the liquid collection pipe 13 .

Compared with prior art, the beneficial effect of the present invention is:

1. In the evaporative condenser of the present invention, the overall inflation heat exchange tube is inflated by the overall two-layer aluminum plate, bent to form an overall serpentine refrigerant fluid pipeline with fins, and the refrigerant gas is discharged through the liquid discharge pipe to flow The liquid condenses during the process, reducing thermal resistance and effectively utilizing the heat transfer area.

2. The evaporative condenser of the present invention can effectively increase the heat exchange area, reduce the heat transfer temperature difference, reduce the pressure ratio of the refrigeration cycle, reduce the power consumption of the refrigeration compressor, improve the performance of the refrigeration system, reduce the overall size, and realize Energy saving and environmental protection.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and Moisture should also be regarded as the scope of protection of the present invention.

Claims (6)

1. An evaporative condenser, characterized in that it comprises an outer frame of a box-type structure and a plurality of serpentine integral inflation heat exchange tubes of plate-like structures arranged in parallel in the outer frame, the snake Integral blown heat exchange tubes include a heat exchange plate with a double-layer aluminum plate structure and a serpentine heat exchange tube formed on the heat exchange plate by inflation; there is an air inlet on the lower side of the outer frame and an air outlet on the top , a fan is installed at the air outlet, and a plurality of water nozzles are arranged between the fan and the serpentine overall inflation heat exchange tube, the water nozzles are installed on the water supply pipe, and the plurality of snakes The inlet ends of the integral blown heat exchange tubes are commonly connected to the gas distribution pipes for distributing the refrigerant gas into a plurality of the serpentine integral blown heat exchange tubes, and the liquid outlet ends are connected to the liquid collection pipes together. The elbow position of the serpentine overall inflation heat exchange tube on the same side as the distribution pipe and the liquid collection pipe, and the corresponding positions of the upper and lower adjacent elbow pipes are respectively connected with a liquid discharge pipe. 2 . The evaporative condenser according to claim 1 , wherein the water supply pipe is welded to the water outlet of the water pump, and the corresponding water outlet orifice of the water supply pipe is welded to the water spray outlet. 3 . 3. The evaporative condenser according to claim 1, wherein the gas distribution pipe is welded to the exhaust pipe of the refrigeration compressor, and the liquid collecting pipe is welded to the inlet connection pipe of the throttling and pressure-reducing element. 4. The evaporative condenser according to claim 1, wherein the orifices of the gas distribution pipes are respectively welded to the circular orifices corresponding to one side of the serpentine integral inflation heat exchange tube, and the The circular openings on the other side of the serpentine integral blown heat exchange tube are respectively welded to the corresponding circular openings of the liquid collecting pipe. 5. The evaporative condenser according to claim 1, wherein the integral blown heat exchange tube is fixed in the outer frame by a heat exchange tube fixing bracket. 6 . The evaporative condenser according to claim 1 , wherein the fan is connected to a fan motor, and the fan motor is fixedly connected by a fan bracket, and the fan bracket is fixed on the top of the outer frame.