CN204806586U - Evaporation cooling formula cooling water set - Google Patents

Abstract

The utility model discloses an evaporative cooling chiller, which comprises a compressor, a condenser, a throttling device, and an evaporator. The evaporator is provided with a refrigerating liquid inlet and a refrigerating liquid outlet; The energy consumption of the whole machine improves the energy efficiency ratio of the whole machine. The evaporative cooling chiller also includes an evaporative cooling device; the evaporative cooling device is provided with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid outlet and the cooling liquid inlet The end pipes are connected. The evaporative cooling chiller adds an evaporative cooling device to the traditional chiller, so that the frozen liquid to be cooled first passes through the evaporative cooling device for pre-cooling and then enters the evaporator for secondary cooling. The evaporative cooling device can only use the evaporator for one-time cooling of the traditional chiller, which can help save energy consumption when processing high-temperature return water, and greatly improve the energy efficiency ratio of the whole machine.

Description

An evaporative cooling chiller

technical field

The utility model relates to the technical field of chillers, in particular to an evaporative cooling chiller.

Background technique

In air conditioning applications, the return water is usually sent directly to the evaporator of the chiller for cooling, but when the return water temperature is high and the required supply water temperature is low, when this method is used, the evaporator needs to provide less than The evaporation temperature of the outlet water temperature leads to a large heat transfer temperature difference and a large irreversible loss, that is, the chiller needs to consume a lot of energy to process the high-temperature return water, which makes the energy efficiency ratio of the whole machine low and consumes a lot of energy.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide an evaporative cooling chiller, which can save energy consumption when processing high-temperature return water, and improve the energy efficiency ratio of the whole machine.

In order to solve the above problems, the technical scheme adopted in the utility model is as follows:

An evaporative cooling chiller, comprising a compressor, a condenser, a throttling device, and an evaporator, the evaporator is provided with a refrigerant inlet port and a refrigerant outlet port; in order to save energy consumption when processing high-temperature return water, improve The overall energy efficiency ratio, the evaporative cooling chiller also includes an evaporative cooling device; the evaporative cooling device is provided with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid outlet is connected to the cooling liquid inlet pipe.

Further, the exhaust pipe of the compressor is connected to the gas pipe of the condenser, and the liquid pipe of the condenser is connected to the liquid pipe of the evaporator through the throttling device; the gas pipe of the evaporator is connected to The suction port of the compressor.

As an improved scheme of the evaporative cooling water chiller of the utility model, the evaporative cooling device includes N evaporative cooling units, and each of the evaporative cooling units is provided with a liquid inlet and a liquid outlet; the N The liquid inlet and outlet ports of the evaporative cooling units are connected in series through pipelines, and the refrigerant inlet is the liquid inlet of the first evaporative cooling unit, and the refrigerant outlet is the outlet of the Nth evaporative cooling unit. liquid port; said N is a positive integer.

Preferably, the refrigerant entering the liquid inlet is one or more of the return water of the air conditioning system, the supply water of the air conditioning system, and the air conditioning water in the intermediate process after the return water is cooled.

Preferably, the evaporative cooling unit further includes a casing, an exhaust fan arranged on the air outlet on the top of the casing, a first heat exchanger arranged in the air inlet on the side of the casing, and a cooling liquid collecting liquid arranged in the casing The pan and the cooling liquid circulation pump, and the cooling liquid sprayer and the second heat exchanger which are arranged in the casing and are located in the air passage connecting the air inlet and the exhaust fan; the cooling liquid sprayer and the cooling liquid The liquid collecting tray is respectively located above and below the second heat exchanger; the first heat exchanger is a gas-liquid heat exchanger; the second heat exchanger is at least provided with a cooling liquid pipeline; the liquid inlet, the first heat exchanger The liquid inlet end of the heat exchanger, the liquid outlet end of the first heat exchanger, the inlet of the cooling liquid pipeline, the outlet of the cooling liquid pipeline, and the liquid outlet are sequentially connected by pipelines; The outlet pipe of the liquid circulation pump is connected to the coolant sprayer.

More preferably, the number of the first heat exchangers is one or more, the air inlets correspond to the first heat exchangers one by one, and the corresponding first heat exchangers are arranged in the corresponding air inlets; The number of the second heat exchanger is one or more.

More preferably, the first heat exchanger is any one of a finned heat exchanger or a micro-channel heat exchanger; the second heat exchanger is a micro-channel heat exchanger or a coiled tube Any of the heat exchangers or plate-fin heat exchangers or plate-and-tube heat exchangers.

Further, the condenser is any one of evaporative condenser, water-cooled condenser or air-cooled condenser.

Furthermore, the condenser is an evaporative condenser, the N is a positive integer greater than 2, and part or all of the air outlet of the evaporative cooling unit is connected to the air inlet of the evaporative condenser.

Alternatively, the condenser is an air-cooled condenser, the N is a positive integer greater than 2, and part or all of the air outlet of the evaporative cooling unit is connected to the air inlet of the air-cooled condenser.

Compared with the prior art, the beneficial effects of the utility model are:

The evaporative cooling chiller of the utility model adds an evaporative cooling device to the traditional chiller, so that the frozen liquid to be cooled first passes through the evaporative cooling device for pre-cooling and then enters the evaporator for secondary cooling. For the traditional chiller that does not have an evaporative cooling device and can only use the evaporator for one-time cooling, it can help save energy consumption when processing high-temperature return water, and greatly improve the energy efficiency ratio of the whole machine.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is the structural representation of the first preferred embodiment of the evaporative cooling chiller of the present invention;

Fig. 2 is the structural representation of the second preferred embodiment of the evaporative cooling chiller of the present invention;

Fig. 3 is the structure diagram of the third more preferred embodiment of the evaporative cooling chiller of the present invention;

Fig. 4 is the structure diagram of the fourth more preferred embodiment of the evaporative cooling chiller of the present utility model;

Fig. 5 is a structural schematic diagram of a fifth preferred embodiment of the evaporative cooling chiller of the present invention;

Fig. 6 is a schematic diagram of the first preferred structure of the evaporative cooling device of the present invention;

Fig. 7 is the schematic diagram of the second preferred structure of the evaporative cooling device of the present invention;

Fig. 8 is the schematic diagram of the third preferred structure of the evaporative cooling device of the present invention;

Fig. 9 is a schematic diagram of the fourth preferred structure of the evaporative cooling device of the present invention;

Fig. 10 is a schematic diagram of the fifth preferred structure of the evaporative cooling device of the present invention;

Fig. 11 is a schematic diagram of the sixth preferred structure of the evaporative cooling device of the present invention.

Wherein, the reference signs of Fig. 1 to Fig. 11 are as follows:

101. Compressor; 102. Condenser; 1021. Air inlet of condenser; 103. Throttling device; 104. Evaporator; 1041. Refrigerant inlet; 1042. Refrigerant outlet; 105. Evaporative cooling device; 1051. Refrigerant inlet; 1052. Refrigerant outlet; 1053. Evaporative cooling unit; 1. The first heat exchanger; 11. The liquid inlet of the first heat exchanger; 12. The liquid outlet of the first heat exchanger 2, the second heat exchanger; 21, the inlet of the refrigerant pipe; 22, the outlet of the refrigerant pipe; 3, the shell; 31, the air inlet; 32, the air outlet; 4, the exhaust fan; 5, the coolant sprayer ;6. Coolant circulation pump; 61. Coolant circulation pump inlet; 62. Coolant circulation pump outlet; 7. Coolant collecting tray; 8. Refrigeration circulation pump; 81. Refrigeration circulation pump inlet; 9. The refrigerant flow regulating valve; 91. The inlet of the refrigerant flow regulating valve; 92. The outlet of the refrigerant flow regulating valve; A. Liquid inlet; B. Liquid outlet.

Moreover, the direction of the dotted arrows in FIGS. 1 to 11 is the flow direction of the air.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the specific implementation, structure, features and effects of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. as follows:

Example 1

What Fig. 1 shows is the first embodiment of the evaporative cooling chiller of the present invention, which includes a compressor 101, a condenser 102, a throttling device 103, and an evaporator 104, and the evaporator 104 is provided with a refrigerant inlet port 1041 and refrigerant outlet port 1042; the exhaust pipe of the compressor 101 is connected to the gas pipe of the condenser 102, and the liquid pipe of the condenser 102 is connected to the liquid of the evaporator 104 through the throttling device 103 tube; the gas pipe of the evaporator 104 is connected to the suction port of the compressor 101; in order to save energy consumption when processing high-temperature return water and improve the energy efficiency ratio of the whole machine, the evaporative cooling chiller also includes evaporative cooling Device 105; the evaporative cooling device is provided with a cooling liquid inlet 1051 and a cooling liquid outlet 1052, and the cooling liquid outlet 1052 communicates with the cooling liquid inlet port 1041 through pipes.

The working principle of the evaporative cooling chiller of the present invention is as follows:

The refrigerated liquid to be cooled first enters the inside of the evaporative cooling device 105 from the refrigerated liquid inlet 1051 for pre-cooling to form a low-temperature refrigerated liquid, and then enters the evaporator 104 through the refrigerated liquid outlet 1052 and the refrigerated liquid inlet port 1041, thereby providing Ready to exchange heat with the refrigerant flowing through the evaporator 104 .

When the refrigerant is compressed by the compressor 101 and becomes a high-temperature and high-pressure gas, it enters the condenser 102 through the refrigeration system pipe, and after being absorbed by the cooling water in the condenser 102, the high-temperature and high-pressure gas is cooled into a low-temperature and high-pressure liquid. The flow device 103 forms a low-temperature and low-pressure liquid and enters the evaporator 104 for heat exchange with the refrigerated liquid to produce a low-temperature refrigerated liquid. At this time, the low-temperature and low-pressure liquid in the evaporator 104 absorbs heat from the low-temperature refrigerated liquid input into the evaporator The evaporation is vaporized and absorbed by the compressor 101 to complete the refrigeration cycle mode, and the temperature of the low-temperature refrigerant is further reduced due to further loss of heat during the refrigerant vaporization process, and finally passes through the refrigerant outlet port 1042 of the evaporator Output to the user side, thus providing users with lower temperature refrigerant.

Since the evaporative cooling chiller of the present utility model adds an evaporative cooling device 105 to the traditional chiller, the frozen liquid to be cooled first passes through the evaporative cooling device 105 for pre-cooling and then enters the evaporator 104 for secondary cooling. Cooling, compared to the traditional chiller that does not have the evaporative cooling device 105 and can only use the evaporator 104 for one-time cooling, can help save energy consumption when processing high-temperature return water, and greatly improve the energy efficiency ratio of the whole machine.

As an improved solution of the evaporative cooling device 105 of the present invention, the evaporative cooling device 105 includes N evaporative cooling units 1053, and each of the evaporative cooling units 1053 is provided with a liquid inlet and a liquid outlet; The liquid inlets and outlets of the N evaporative cooling units 1053 are sequentially connected in series through pipelines, and the refrigerant inlet 1051 is the liquid inlet of the first evaporative cooling unit 1053, and the refrigerant outlet 1052 is the Nth liquid outlets of evaporative cooling units 1053; said N is a positive integer.

After adopting the improvement plan of the evaporative cooling device, the cooling process of the refrigerated liquid is: the refrigerated liquid to be cooled enters the liquid inlet of the first-stage evaporative cooling unit 1053 to cool down in the first-stage evaporative cooling unit 1053, and then passes through the first-stage evaporative cooling unit 1053 to cool down. The liquid outlet of the first-stage evaporative cooling unit 1053 enters the second, third, ... stage evaporative cooling units until the Nth-stage evaporative cooling unit 1053 cools down and reaches the refrigerant inlet port 1041 of the evaporator, and is cooled to the target by the evaporator. After the temperature is reached, the cryogenic liquid is provided to the user through the refrigerant liquid outlet port 1042 of the evaporator. It should be noted that when the value of N is larger, the heat exchange efficiency of the evaporative cooling device 105 is higher, so that the heat exchange efficiency of the evaporative cooling water chiller of the present utility model is higher.

As a further improvement of the evaporative cooling device of the present invention, as shown in FIG. 6, the first preferred structure of the evaporative cooling unit 1053 is: the evaporative cooling unit 1053 also includes a housing 3, which is located in the housing 3 The exhaust fan 4 on the top air outlet 32, the first heat exchanger 1 arranged in the side air inlet 31 of the casing 3, the cooling liquid collecting pan 7 and the cooling liquid circulation pump 6 arranged in the casing 3, and The cooling liquid sprayer 5 and the second heat exchanger 2 which are arranged in the housing 3 and are located in the air duct connecting the air inlet 31 and the exhaust fan 4; the cooling liquid sprayer 5 and the cooling liquid collection The liquid pan 7 is respectively located above and below the second heat exchanger 2; the first heat exchanger 1 is a gas-liquid heat exchanger; the second heat exchanger 2 is at least provided with a cooling liquid pipeline; the liquid inlet A , the liquid inlet end 11 of the first heat exchanger, the liquid outlet end 12 of the first heat exchanger, the inlet 21 of the refrigerant pipe, the outlet 22 of the refrigerant pipe, and the outlet B are connected in sequence; the inlet 61 of the cooling liquid circulation pump is piped The cooling liquid collecting pan 7 is connected, and the cooling liquid circulation pump outlet 62 is connected to the cooling liquid sprayer 5 through pipelines.

It should be noted that the number of the first heat exchangers 1 is one or more, the air inlets 31 correspond to the first heat exchangers 1 one by one, and the corresponding first heat exchangers 1 are arranged at the corresponding Among the air inlets 31; the number of the second heat exchanger 2 is one or more. In order to simplify the structure, the number of the first heat exchanger 1 and the number of the second heat exchanger 2 in this embodiment is one respectively. At the same time, in order to save production costs and improve production efficiency, the first heat exchanger 1 is any one of a finned heat exchanger or a microchannel heat exchanger; the second heat exchanger 2 is a microchannel Any one of type heat exchanger or serpentine tube heat exchanger or plate-fin heat exchanger or plate-tube heat exchanger.

The evaporative cooling unit described above works as follows:

The refrigerant to be cooled enters the first heat exchanger 1 through the liquid inlet A of the first-stage evaporative cooling unit 1053 and the liquid inlet 11 of the first heat exchanger in sequence, and is combined with the first heat exchanger 1 under the action of the exhaust fan 4 The normal-temperature air around the heat exchanger 1 performs heat exchange. After absorbing the heat of the normal-temperature air, the refrigerant to be cooled is heated into a high-temperature refrigerant and then enters the refrigerant pipeline of the second heat exchanger 2. The normal-temperature air Due to the loss of heat, it is cooled into low-temperature air and flows in the direction of the second heat exchanger 2 so as to prepare for reverse mass transfer and heat exchange with the coolant sprayed from the coolant sprayer 5;

The coolant in the coolant sprayer 5 is sprayed onto the surface of the second heat exchanger 2, part of the coolant is evaporated and cooled after contacting the low-temperature air, and the theoretical limit temperature of the evaporated coolant after cooling is It is the dew point temperature of the air. After cooling, the evaporating cooling liquid exchanges heat with the non-evaporating cooling liquid to lower the temperature of the non-evaporating cooling liquid. The theoretical limit temperature of the non-evaporating cooling liquid after cooling is also that of air. Dew point temperature; the non-evaporated cooling liquid on the surface of the second heat exchanger 2 is cooled by the evaporative cooling liquid while also exchanging heat with the high-temperature refrigerating liquid flowing inside the refrigerating liquid pipeline of the second heat exchanger 2, so that The high-temperature refrigerant in the second heat exchanger 2 is cooled to a low-temperature refrigerant, and the theoretical limit temperature of the low-temperature refrigerant is also the dew point temperature of the air. Finally, the low-temperature refrigerant is output to the refrigerant of the evaporator through the liquid outlet. The inlet port (that is, when the value of N is 1) or the liquid inlet of the next-stage evaporative cooling unit 1053 (that is, when the value of N is more than 2);

Finally, the non-evaporated cooling liquid below the second heat exchanger 2 continues to exchange heat with the evaporated cooling liquid until it falls back into the cooling liquid collecting pan 7, and is redistributed under the action of the cooling liquid circulation pump 6. pumped into the coolant sprayer 5 for recycling;

The outdoor air that is forcibly inhaled by the exhaust fan 4 is cooled by the first heat exchanger 1 and then in countercurrent contact with the cooling liquid sprayed from top to bottom in the device, so that the cooling liquid evaporates quickly, and the latent heat of evaporation of the cooling liquid is used to take away The heat of the refrigerant liquid in the second heat exchanger 2 and the heat of the cooling liquid outside the second heat exchanger 2, the air is cooled and humidified by the evaporation of the cooling liquid to become low-temperature and high-humidity air, which is discharged into the atmosphere by the exhaust fan 4 .

The specific structure of the evaporative cooling unit of the utility model makes the refrigerant flow in the pipeline between the liquid inlet A, the first heat exchanger 1, the second heat exchanger 2, and the liquid outlet B, combined with the first spray The sprayed cooling liquid directly exchanges heat with the cooled air sucked into the housing 3, and then the sprayed cooling liquid exchanges heat with the cooling liquid flowing in the second heat exchanger 2. While cooling the refrigerant liquid, it also avoids direct contact of the refrigerant liquid with the air, and prevents dust particles in the air from contaminating the prepared cryogenic refrigerant, thus avoiding the occurrence of dust particles in the cryogenic refrigerant causing the evaporator 104 or the next-stage evaporative The pipe blockage of the freezing unit 1053 also avoids the blockage of the unit pipes caused by the produced low-temperature refrigerated liquid returning to the inside of the unit, prolonging the service life of the evaporative cooling device of the present invention.

Moreover, in order to meet the user's cooling demand for air-conditioning water, as a further improvement of this embodiment, the refrigerant entering the liquid inlet A is the return water of the air-conditioning system, the water supply of the air-conditioning system, and the intermediate process after the return water is cooled. One or more of the three types of air-conditioning water. Moreover, it should be noted that the cooling liquid may be water or any liquid other than water that can be used to cool down objects.

As a further improvement of this embodiment, the condenser 102 is an evaporative condenser. Since the evaporative cooler has superior heat dissipation performance, the system has a large refrigeration coefficient, and does not require a cooling tower, it not only saves installation space, but also reduces The refrigerant circulation volume of the chiller enables the evaporative cooling chiller of the utility model to achieve the superior effect of energy saving, and meets the consumer's demand for energy-saving and environment-friendly products.

Example 2

What Fig. 2 shows is the second embodiment of the evaporative cooling water chiller of the utility model, which differs from the first embodiment shown in Fig. 1 in that: said N is a positive integer greater than 2, said Part or all of the air outlet 32 of the evaporative cooling unit 1053 communicates with the air inlet 1021 of the evaporative condenser. The cooled air discharged from the evaporative cooling unit 1053 can make the air inlet temperature of the evaporative condenser lower than the general ambient temperature, so that the heat transfer performance of the evaporative condenser is better, so that the evaporation of the utility model The cooling chiller has a superior effect of energy saving as a whole.

Example 3

The third embodiment of the evaporative cooling water chiller of the present invention shown in FIG. 3 differs from the first embodiment shown in FIG. 1 in that the condenser 102 is an air-cooled condenser. Since the operation and maintenance of the air-cooled condenser is the simplest and the equipment investment is small, it is suitable for use in areas where water resources are scarce. For areas where the unit needs to run for a long time, its economic benefits are more obvious, so that the evaporative cooling of the utility model The chiller has a superior effect of energy saving as a whole.

Example 4

What Fig. 4 shows is the fourth embodiment of the evaporative cooling water chiller of the present utility model, which is different from the third embodiment shown in Fig. 3 in that: said N is a positive integer greater than 2, said Part or all of the air outlet 32 of the evaporative cooling unit 1053 communicates with the air inlet 1021 of the air-cooled condenser. The cooled air discharged from the evaporative cooling unit 1053 can make the inlet air temperature of the air-cooled condenser lower than the general ambient temperature, so that the heat exchange performance of the air-cooled condenser is better, so that the utility model The evaporative cooling chiller has a superior effect of energy saving as a whole.

Example 5

Fig. 5 shows the fifth embodiment of the evaporative cooling water chiller of the present invention, which differs from the first embodiment shown in Fig. 1 in that the condenser 102 is a water-cooled condenser. Since the water-cooled condenser has mature condensation technology, the evaporative cooling chiller of the utility model can operate more stably.

The structure of the evaporative cooling unit 1053 of the evaporative cooling chiller described in the above embodiments 1 to 5 can be replaced by the following five preferred structures:

Preferred structure 2

What Fig. 7 shows is the second preferred structure of the evaporative cooling unit 1053 of the present utility model, which differs from the first preferred structure shown in Fig. 6 in that: the evaporative cooling unit 1053 also includes a refrigerant circulation pump 8. The inlet 81 of the cooling liquid circulating pump is connected to the liquid outlet B, and the outlet 82 of the cooling liquid circulating pump is connected to the liquid inlet A, so that the prepared low-temperature cooling liquid is divided into two paths, one path Flow to the liquid outlet B and output to the refrigerant inlet port of the evaporator (that is, when the value of N is 1) or enter the liquid inlet of the next-stage evaporative cooling unit (that is, when the value of N is more than 2) , the other way can be re-injected into the evaporative cooling unit to further reduce the temperature of the refrigerant at the inlet A of the refrigerant, so that the refrigerant in the first heat exchanger 1 needs to absorb more into the air around the first heat exchanger 1 More heat can increase the temperature, so as to further reduce the temperature of the air around the first heat exchanger 1, and when this part of air is sucked into the shell 3 by the exhaust fan 4, it can be sprayed out quickly. The cooling effect of the cooling liquid finally accelerates the cooling speed of the freezing liquid in the second heat exchanger 2, greatly improves the heat exchange efficiency of the evaporative cooling unit, and finally achieves the improvement of the overall heat exchange of the evaporative cooling water chiller of the utility model purpose of efficiency.

Preferred structure 3

What Fig. 8 shows is the third preferred structure of the evaporative cooling unit 1053 of the present invention, and the difference between it and the first preferred structure shown in Fig. 6 is that this preferred structure adds a first heat exchanger 1. Specifically: the number of the first heat exchangers 1 is two, and the number of air inlets 31 on the side of the housing 3 is two; the two first heat exchangers 1 are respectively installed in the two inlets. In the tuyere 31; the liquid inlet ports 11 of the two first heat exchangers are connected to the liquid inlet A, and the liquid outlet ports 12 of the two first heat exchangers are connected to the refrigerant of the second heat exchanger 2 Pipe inlet 21.

The specific flow direction of the refrigerated liquid in the evaporative cooling unit 1053 is: the refrigerated liquid to be cooled enters the evaporative cooling unit of the utility model through the liquid inlet A and is divided into two paths and flows to the two first heat exchangers 1 respectively. Exchange heat with the outdoor air that is forcibly inhaled by the exhaust fan 4, the refrigerant heats up, and then is sent to the refrigerant pipe of the second heat exchanger 2 at the lower part of the coolant sprayer 5 to be cooled, and the cooled refrigerant passes through this The liquid outlet B of the evaporative cooling unit of the utility model is output to the refrigerant inlet port of the evaporator (that is, when the value of N is 1) or enters the liquid inlet of the next-stage evaporative cooling unit (that is, when the value of N is 1) when the value is greater than 2).

Compared with the first preferred structure using only one first heat exchanger 1, this preferred structure makes twice as much cold and low-temperature air in the housing 3 flow to the second heat exchanger 2, so that the second heat exchanger The refrigerated liquid in 2 can be cooled to the target temperature faster, which greatly improves the heat exchange efficiency of the second heat exchanger 2, thereby improving the heat exchange efficiency of the evaporative cooling unit, and finally achieving the improvement of the evaporation rate of the utility model. The purpose of the overall heat transfer efficiency of the cooled chiller.

Preferred structure 4

Figure 9 shows the fourth preferred structure of the evaporative cooling unit 1053 of the present invention, which differs from the first preferred structure shown in Figure 6 in two points.

The first point of difference is: the number of second heat exchangers 2 in this preferred structure is two; wherein, the refrigerant liquid pipeline inlet 21 and outlet 22 of the first second heat exchanger 2 are respectively connected to the first heat exchanger. The liquid outlet 12 communicates with the liquid outlet B with the refrigerant liquid pipe inlet 21 of the second second heat exchanger, and the refrigerant liquid pipe outlet 22 of the second second heat exchanger 2 . In order to make the structure more compact, the two second heat exchangers 2 are arranged up and down, and the first second heat exchanger 2 is located below the coolant sprayer 5, and the second second heat exchanger 2 The heat exchanger 2 is located below the first and second heat exchangers 2 .

The specific flow direction of the refrigerated liquid in the evaporative cooling unit 1053 is: the refrigerated liquid to be cooled enters the evaporative cooling unit 1053 of the utility model through the liquid inlet A, and then flows into the first heat exchanger 1 and is connected with the exhaust fan 4. The forced inhaled outdoor air is heat-exchanged, and the refrigerant heats up, and then sent into the refrigerant pipeline of the first and second heat exchangers 2 at the bottom of the coolant sprayer 5 to be cooled, and the cooled refrigerant is then sent to the Secondary cooling is carried out in the freezing liquid pipeline of the second second heat exchanger 2, and finally output to the freezing liquid inlet port of the evaporator through the liquid outlet B of the evaporative cooling unit of the present utility model (that is, when N when the value is 1) or into the liquid inlet of the next-stage evaporative cooling unit (that is, when the value of N is more than 2).

Compared with the first preferred structure using only one second heat exchanger 2, this embodiment uses two second heat exchangers 2, so that the refrigerant output from the liquid outlet 12 of the first heat exchanger is subjected to secondary cooling , so that the refrigerant is cooled to the target temperature faster, greatly improving the heat exchange efficiency of the evaporative cooling unit of the utility model, and finally achieving the purpose of improving the overall heat exchange efficiency of the evaporative cooling chiller of the utility model.

The second point of difference is: this preferred structure also includes a cooling liquid circulation pump 8, the inlet 81 of the cooling liquid circulation pump is connected to the cooling liquid pipeline outlet 22 of the first second heat exchanger 2, and the cooling liquid circulation pump The outlet 82 pipe is connected to the liquid inlet A, so that the low-temperature refrigerant produced by the first second heat exchanger 2 is divided into two paths, and one path flows to the second second heat exchanger 2 for secondary cooling. The other way can be re-injected into the evaporative cooling unit to further reduce the temperature of the refrigerant at the liquid inlet A, so that the refrigerant in the first heat exchanger 1 needs to absorb more into the air around the first heat exchanger 1 Only by using the heat can the temperature be raised to achieve the purpose of further reducing the temperature of the air around the first heat exchanger 1, and when this part of the air is sucked into the shell 3 by the exhaust fan 4, it can speed up its spraying process. The cooling effect of the cooling liquid further accelerates the cooling speed of the freezing liquid in the second heat exchanger 2, improves the heat exchange efficiency of the evaporative cooling unit, and finally achieves a further improvement in the overall heat exchange of the evaporative cooling water chiller of the utility model. purpose of efficiency.

Preferred structure 5

FIG. 10 shows the fifth preferred structure of the evaporative cooling unit 1053 of the present invention, which differs from the third optimized structure shown in FIG. 8 in two points.

The first difference is: the liquid inlet A pipe is connected to the liquid outlet 12 of the first heat exchanger, so as to guide the refrigerant at the liquid inlet A directly to the liquid outlet of the first heat exchanger 12, thereby reducing the temperature of the refrigerant in the refrigerant pipe flowing into the second heat exchanger 2, improving the heat exchange efficiency of the second heat exchanger 2, and improving the heat exchange efficiency of the evaporative cooling unit 1053, thereby achieving an improvement The purpose of the overall heat exchange efficiency of the evaporative cooling water chiller of the utility model.

Further, this preferred structure also includes a refrigerant flow regulating valve 9, the liquid inlet A pipe is connected to the inlet 91 of the refrigerant flow regulating valve, and the outlet 92 of the refrigerant flow regulating valve is piped to the first The liquid outlet 12 of the heat exchanger, by setting the refrigerant flow regulating valve 9, can control the flow rate of the refrigerant directly directed to the liquid inlet of the first heat exchanger outlet 12, thereby realizing regulation The function of the heat exchange efficiency of the second heat exchanger 2 satisfies the user's demand for diversified functions of the evaporative cooling unit.

The second difference is: this preferred structure also includes a refrigerant circulation pump 8, the inlet 81 of the refrigerant circulation pump is connected to the liquid outlet B, and the outlet 82 of the refrigerant circulation pump is connected to the liquid inlet A, so that the prepared low-temperature freezing liquid is divided into two paths, one way flows to the liquid outlet B to be output to the freezing liquid inlet port of the evaporator (that is, when the value of N is 1) or enter the next stage of evaporative cooling The liquid inlet of the unit (that is, when the value of N is more than 2), the other way can be re-injected into the evaporative cooling unit to further reduce the temperature of the refrigerant at the liquid inlet A; on the one hand, the first heat exchange The refrigerant in the device 1 needs to absorb more heat from the air around the first heat exchanger 1 to increase its temperature, so as to further reduce the temperature of the air around the first heat exchanger 1, and when this part of the air is drawn When the heat exchanger 4 is drawn into the housing 3, it can speed up its cooling effect on the sprayed coolant, and finally accelerate the cooling speed of the coolant in the second heat exchanger 2, improving the exchange rate of the evaporative cooling unit. thermal efficiency; on the other hand, due to the existence of the above-mentioned first difference point, the temperature of the refrigerated liquid in the refrigerated liquid pipeline flowing into the second heat exchanger 2 can be further reduced, and the heat exchange efficiency of the second heat exchanger 2 can be further improved. Therefore, the heat exchange efficiency of the evaporative cooling unit can be further improved, thereby greatly improving the overall heat exchange efficiency of the evaporative cooling water chiller of the utility model.

Preferred Structure 6

Fig. 11 is a sixth preferred structure of the evaporative cooling unit 1053 of the present invention, which differs from the first preferred structure shown in Fig. 6 in two points.

The first difference is: the number of the first heat exchanger 1 and the second heat exchanger 2 are two respectively; the number of air inlets 31 on the side of the housing 3 is two; the two first heat exchangers The device 1 is respectively installed in the two air inlets 31 correspondingly; the liquid inlets 11 of the two first heat exchangers are connected to the liquid inlet A, and the liquid outlets 12 of the two first heat exchangers are connected to each other. The coolant pipeline inlet 21 of the first second heat exchanger 2, the coolant pipeline outlet 22 of the first second heat exchanger 2 communicates with the coolant pipeline inlet 21 of the second second heat exchanger 2, The cooling liquid pipeline outlet 22 of the second second heat exchanger 2 communicates with the liquid outlet B. In order to make the structure more compact, the two second heat exchangers 2 are arranged up and down, and the first second heat exchanger 2 is located below the coolant sprayer 5, and the second second heat exchanger 2 The heat exchanger 2 is located below the first and second heat exchangers 2 .

The specific flow direction of the refrigerated liquid in the evaporative cooling unit is: the refrigerated liquid to be cooled enters the evaporative cooling unit through the liquid inlet A and then divides into two paths to flow into the two first heat exchangers 1 and the exhaust fan 4. The forced inhaled outdoor air is heat-exchanged, and the refrigerant heats up, and then sent into the refrigerant pipeline of the first and second heat exchangers 2 at the bottom of the coolant sprayer 5 to be cooled, and the cooled refrigerant is then sent to the Secondary cooling is carried out in the refrigerant liquid pipeline of the second second heat exchanger 2, and finally through the liquid outlet B of the evaporative cooling unit to output to the refrigerant inlet port of the evaporator (that is, when the value of N is 1) or into the liquid inlet of the next-stage evaporative cooling unit (that is, when the value of N is above 2).

Compared with the first preferred structure using only one first heat exchanger 1 and one second heat exchanger 2, this preferred structure uses two first heat exchangers 1 on the one hand to make the shell 3 have more Double the cold and low temperature air flows to the second heat exchanger 2, which greatly improves the heat exchange efficiency of the second heat exchanger 2. On the other hand, two second heat exchangers 2 are used to make the two first heat exchangers The refrigerated liquid output from the liquid outlet 12 of the evaporative cooling unit is subjected to secondary cooling, so that the refrigerated liquid is cooled to the target temperature faster, which greatly improves the heat exchange efficiency of the evaporative cooling unit, and finally achieves the improvement of the evaporative cooling system of the utility model. The purpose of the overall heat exchange efficiency of the chiller.

The second point of difference is: this preferred structure also includes a cooling liquid circulation pump 8, the inlet 81 of the cooling liquid circulation pump is connected to the cooling liquid pipeline outlet 22 of the first second heat exchanger 2, and the cooling liquid circulation pump The outlet 82 pipe is connected to the liquid inlet A, so that the prepared low-temperature freezing liquid is divided into two paths, one path flows to the second second heat exchanger 2 for secondary cooling, and the other path can be re-injected into the evaporative In the cooling unit, further reduce the temperature of the refrigerant at the liquid inlet A, so that the refrigerant in the two first heat exchangers 1 needs to absorb more heat from the air around the two first heat exchangers 1 to increase temperature, so as to further reduce the temperature of the air around the two first heat exchangers 1, and when this part of the air is sucked into the housing 3 by the exhaust fan 4, it can speed up the spraying of the cooling liquid. The cooling effect finally further accelerates the cooling speed of the refrigerated liquid in the two second heat exchangers 2, further improves the heat exchange efficiency of the evaporative cooling unit, and finally achieves further improving the overall exchange rate of the evaporative cooling water chiller of the utility model. purpose of thermal efficiency.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. The scope of protection required by the utility model.

Claims (10)

1. An evaporative cooling chiller, comprising a compressor, a condenser, a throttling device, and an evaporator, and the evaporator is provided with a refrigerating liquid inlet and a refrigerating liquid outlet; it is characterized in that: also includes an evaporative cooling device ; The evaporative cooling device is provided with a cooling liquid inlet and a cooling liquid outlet; the cooling liquid outlet is connected to the cooling liquid inlet pipe. 2. The evaporative cooling chiller as claimed in claim 1, characterized in that: the exhaust pipe of the compressor is connected to the gas pipe of the condenser, and the liquid pipe of the condenser is connected to the The liquid pipe of the evaporator; the gas pipe of the evaporator is connected to the suction port of the compressor. 3. The evaporative cooling chiller as claimed in claim 1, wherein the evaporative cooling device comprises N evaporative cooling units, and each of the evaporative cooling units is provided with a liquid inlet and a liquid outlet mouth; the liquid inlet and outlet ports of the N evaporative cooling units are connected in series through pipelines, and the refrigerant inlet is the liquid inlet of the first evaporative cooling unit, and the refrigerant outlet is the Nth The liquid outlet of the evaporative cooling unit; said N is a positive integer. 4. The evaporative cooling chiller as claimed in claim 3, characterized in that: the refrigerant entering the liquid inlet is the return water of the air conditioning system, the water supply of the air conditioning system, and the air conditioner in the middle process after the return water is cooled. One or more of the three types of water. 5. The evaporative cooling chiller as claimed in claim 3, characterized in that: the evaporative cooling unit further comprises a housing, and an exhaust fan arranged on the air outlet on the top of the housing is arranged in the air inlet on the side of the housing The first heat exchanger, the cooling liquid collecting pan and the cooling liquid circulation pump arranged in the casing, and the cooling liquid sprayer and the cooling liquid sprayer and The second heat exchanger; the coolant sprayer and the coolant collecting pan are respectively located above and below the second heat exchanger; the first heat exchanger is a gas-liquid heat exchanger; the second heat exchanger The heater is at least provided with a refrigerant pipe; the liquid inlet, the liquid inlet end of the first heat exchanger, the liquid outlet end of the first heat exchanger, the inlet of the refrigerant pipe, the outlet of the refrigerant pipe, and the outlet are connected in sequence; The inlet pipe of the cooling liquid circulation pump is connected to the cooling liquid collecting pan, and the outlet pipe of the cooling liquid circulating pump is connected to the cooling liquid sprayer. 6. The evaporative cooling water chiller according to claim 5, characterized in that: the number of the first heat exchanger is one or more, and the air inlet corresponds to the first heat exchanger one by one, The corresponding first heat exchanger is arranged in the corresponding air inlet; the number of the second heat exchanger is one or more. 7. The evaporative cooling chiller as claimed in claim 5, characterized in that: the first heat exchanger is any one of a finned heat exchanger or a micro-channel heat exchanger; The heat exchanger is any one of a micro-channel heat exchanger, a serpentine tube heat exchanger, a plate-plate heat exchanger or a plate-tube heat exchanger. 8. The evaporative cooling chiller according to any one of claims 5-7, wherein the condenser is any one of an evaporative condenser, a water-cooled condenser or an air-cooled condenser. 9. The evaporative cooling chiller according to claim 8, wherein the condenser is an evaporative condenser, the N is a positive integer greater than 2, and the air outlet part of the evaporative cooling unit or All are connected to the air inlet of the evaporative condenser. 10. The evaporative cooling chiller according to claim 8, wherein the condenser is an air-cooled condenser, the N is a positive integer greater than 2, and the air outlet part of the evaporative cooling unit Or all connected to the air inlet of the air-cooled condenser.