CN201858821U - A refrigerant evaporative cooler - Google Patents

Abstract

A refrigerant evaporative cooler comprises a box body, an overheated steam cooler, a heat exchanger, a water collecting tank, a circulating water pump, a fan, a spraying device and a water supplementing device, wherein the overheated steam cooler is connected with the heat exchanger. The beneficial effects are as follows: 1. the metal fins are arranged on the condensing coil, so that the heat exchange area is increased, and the heat transfer efficiency is improved; 2. the structure is more compact, the refrigerant filling amount is less, and the cost is reduced; 3. when the system condensation load is low or the external environment temperature is low, wind can be adopted for direct cooling, and the freezing problem in winter is solved.

Description

A refrigerant evaporative cooler

【Technical field】

The utility model relates to refrigeration equipment, in particular to a refrigerant evaporation cooler.

【Background technique】

In refrigeration devices, there are many types of condensers, usually air-cooled condensers, water-cooled condensers with or without cooling water towers, and evaporative condensers. Air-cooled condensers have low operating efficiency and system operating costs Relatively high, bulky, high noise and shortened service life of the compressor due to high compression ratio, etc., the dual use of cooling and heating is its biggest advantage. The water-cooled condenser has high operating efficiency and compact structure, but the main engine must be equipped with a cooling tower and a cooling water circulation system, which consumes a lot of water and requires additional water treatment costs. The main engine can only achieve a single cooling function. The evaporative condenser is a compact heat exchange equipment that combines air-cooled, water-cooled and cooling towers. It mainly relies on the evaporation of water to condense the refrigerant to dissipate heat, and has the highest operating efficiency.

At present, the traditional evaporative condenser structure is usually divided into special-shaped tube type (including round tube, oval tube, different drop-shaped tube, conical arc tube and alternating twisted tube, etc.), evaporative condenser and plate or plate Tubular evaporative condensers all have the following deficiencies: 1. The heat transfer element is a bare tube bundle or a flat plate bundle, the effective heat exchange area is small, the heat transfer coefficient outside the tube bundle or plate is low, and the equipment is bulky; 2. It is necessary to add an additional heat exchange layer of PVC filler. PVC filler is easy to accumulate dust, scale and rot and denature, so it needs to be replaced frequently; When the temperature is low, the water pump still needs to be turned on to ensure the operation of the equipment, and there is a danger of freezing in winter; 4. Normal heating operation cannot be realized in transitional seasons or winter; 5. Refrigerant steam directly enters the evaporative condenser for phase-change heat transfer. The temperature of the spray water on the surface of the tube or plate is high, and the surface of the condenser is easy to scale.

Therefore, the utility model further improves the evaporative condenser aiming at the deficiencies of the prior art.

【Content of utility model】

The purpose of the utility model is to provide a refrigerant evaporative cooler with high heat transfer efficiency, more compact structure, less refrigerant charge, less scale formation, strong corrosion resistance and stable long-term operating efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions:

A refrigerant evaporative cooler, including a box body, a superheated steam cooler, a heat exchanger, a water collection tank, a circulating water pump, a fan, a spray device and a water supply device, the superheated steam cooler is connected with the heat exchanger, It is characterized in that the heat exchanger includes a gas collection pipe, a liquid collection pipe and a condensation coil, the inlet ports of the condensation coil are respectively connected with the gas collection pipe, and the liquid outlet ports of the condensation coil are connected with the liquid collection pipe respectively. The tubes are connected, and the condensation coil is composed of heat transfer tubes and cooling fins.

A refrigerant evaporative cooler as described above is characterized in that the superheated steam cooler includes an inlet pipe, an outlet pipe and a pre-condensation coil, the front end of the pre-condensation coil is connected to the inlet pipe, and the The rear end of the pre-condensing coil is connected with the air outlet pipe; the air outlet pipe is connected with the gas collecting pipe of the heat exchanger; the pre-condensing coil is composed of heat transfer tubes and fins.

A refrigerant evaporative cooler as described above is characterized in that the condensing coils and the pre-condensing coils are distributed in multiple arrays.

A refrigerant evaporative cooler as described above is characterized in that the heat dissipation fins are distributed in a spiral shape or arranged in an independent sheet shape.

A refrigerant evaporative cooler as described above is characterized in that the heat dissipation fins are clamped on or sleeved on the heat transfer tubes.

A refrigerant evaporative cooler as described above is characterized in that an air filter is provided at the side air inlet of the box body.

A refrigerant evaporative cooler as described above is characterized in that heat exchangers are respectively arranged on the left and right sides of the box body, and water baffles are arranged between the heat exchangers.

The beneficial effects of the utility model are as follows: 1. Since the metal fins are arranged on the condensing coil, the heat exchange area is increased, which is conducive to improving the heat transfer efficiency; 2. The structure is more compact, and the refrigerant charge is less, which is beneficial to Reduce costs; 3. When the system condensing load is low or the external environment temperature is low, direct wind cooling can be used to solve the freezing problem in winter; 4. The effective heat exchange area of the condensing coil increases significantly, so the equipment can realize the transition season Or normal heating operation in winter.

【Description of drawings】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail;

Fig. 1 is a schematic diagram of the structural layout of the utility model;

Fig. 2 is a structural schematic diagram of the utility model heat exchanger;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the top view of Fig. 2;

Fig. 5 is a structural schematic diagram of the utility model superheated steam cooler 2;

Fig. 6 is the left side view of Fig. 5;

Figure 7 is a top view of Figure 5;

Fig. 8 is a schematic diagram of a condensing coil;

Fig. 9 is a schematic diagram of a rib installation structure of the present invention;

Fig. 10 is a second schematic diagram of the rib installation structure of the utility model;

Fig. 11 is the third schematic diagram of the rib installation structure of the utility model;

【Detailed ways】

As shown in Figure 1, a refrigerant evaporative cooler referred to in the utility model includes a box body 1, a superheated steam cooler 2, a heat exchanger 3, a water collection tank 4, a circulating water pump 5, a fan 6, a spray device 7 and water supply device 8, the superheated steam cooler 2 is connected with the heat exchanger 3. The water collecting tank 4 is arranged below the heat exchanger 3 , and the spray device 7 is arranged above the heat exchanger 3 . One end of the circulating water pump 5 is connected to the water collection tank 4 through a pipeline, and the other end is connected to the spray device 7 through a pipeline. The fan 6 is arranged on the top of the box body 1 and is located directly above the superheated steam cooler 2 . Wherein said heat exchanger 3 comprises gas collecting pipe 9, liquid collecting pipe 10 and condensing coil 11, and the inlet port of said condensing coil 11 is connected with gas collecting pipe 9 respectively, and the outlet liquid of said condensing coil 11 The ports communicate with the liquid collecting pipes 10 respectively, and the condensation coil 11 is composed of heat transfer tubes 12 and cooling fins 13 .

In the utility model, the superheated steam cooler 2 includes an air inlet pipe 14, an air outlet pipe 15 and a pre-condensation coil 16, the front end of the pre-condensation coil 16 communicates with the air inlet pipe 14, and the pre-condensation coil The rear end of 16 communicates with the air outlet pipe 15; the air outlet pipe 15 communicates with the air collector 9 of the heat exchanger 3;

In this embodiment, the condensing coils 11 and the pre-condensing coils 16 are distributed in multiple arrays. The heat dissipation fins 13, 18 are distributed in a spiral shape or arranged in an independent sheet shape. The heat dissipation fins 13 , 18 are clamped on the heat transfer tubes 12 , 17 or sleeved on the heat transfer tubes 12 , 17 .

And an air filter 19 is provided at the side air inlet of the casing 1 . In order to improve the cooling effect, heat exchangers 3 are arranged on the left and right sides of the box body 1 respectively, and a water baffle plate 20 is arranged between the heat exchangers 3 .

The principle of the utility model is: the high-temperature and high-pressure refrigerant steam is pre-cooled through the hot steam cooler, and then the pre-cooled refrigerant steam is input into the heat exchanger through the outlet pipe for secondary cooling. , the refrigerant changes from a gaseous state to a liquid state, and at this time it turns into a low-temperature and high-pressure refrigerant liquid and then flows out of the cooler.

The utility model extracts the water in the water collecting tank 4 through the circulating water pump 5, and sprays the water on the heat exchanger 3 by the spray device 5. Since the heat exchanger 3 adopts the structure of the condensing coil 11, and the condensing coil 11 The metal heat dissipation fins 13 are arranged on the top, so that the heat exchange area of the condensation coil 11 is greatly increased, which is more conducive to the heat and mass exchange of the refrigerant, so that the cooling effect is better. Set the pre-condensation coil 16 in the superheated steam cooler 2, and set the metal heat dissipation fins 13 on the pre-condensation coil 16, on the one hand, it can effectively prevent the high-temperature section of the condensation coil 11 from forming fouling after being sprayed with water , and further improve the heat transfer efficiency to about 10%, the energy saving effect is more obvious.

Claims (7)

1. A refrigerant evaporative cooler, comprising a casing (1), a superheated steam cooler (2), a heat exchanger (3), a water collection tank (4), a circulating water pump (5), a blower fan (6), Spraying device (7) and water supply device (8), the superheated steam cooler (2) is connected with the heat exchanger (3), it is characterized in that the heat exchanger (3) includes a gas collector (9) , a liquid collecting pipe (10) and a condensing coil (11), the inlet ports of the condensing coil (11) are connected with the gas collecting pipe (9) respectively, and the liquid outlet ports of the condensing coil (11) are respectively It communicates with the liquid collecting pipe (10), and the condensation coil (11) is composed of heat transfer pipes (12) and cooling fins (13). 2. A refrigerant evaporative cooler according to claim 1, characterized in that the superheated steam cooler (2) includes an inlet pipe (14), an outlet pipe (15) and a pre-condensing coil (16) , the front end of the pre-condensing coil (16) communicates with the air inlet pipe (14), and the rear end of the pre-condensing coil (16) communicates with the air outlet pipe (15); the outlet pipe (15) communicates with the air outlet pipe (15) The air collecting pipes (9) of the heat exchanger (3) are connected; the pre-condensing coil (16) is composed of heat transfer pipes (17) and fins (18). 3. A refrigerant evaporative cooler according to claim 1 or 2, characterized in that the condensation coil (11) and the pre-condensation coil (16) are distributed in multiple arrays. 4. A refrigerant evaporative cooler according to claim 1 or 2, characterized in that the heat dissipation fins (13, 18) are distributed in a spiral shape or arranged in an independent sheet shape. 5. A refrigerant evaporative cooler according to claim 4, characterized in that the heat dissipation fins (13, 18) are stuck on the heat transfer tubes (12, 17) or sleeved on the heat transfer tubes (12, 17). 17) on. 6. A refrigerant evaporative cooler according to claim 1, characterized in that an air filter (19) is provided at the side air inlet of the box body (1). 7. A refrigerant evaporative cooler according to claim 1, characterized in that heat exchangers (3) are respectively arranged on the left and right sides of the box body (1), and between the heat exchangers (3) A water baffle (20) is provided.

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