CN217303046U - Air-cooled water chilling unit - Google Patents

Abstract

The application provides an air-cooled water chilling unit. The air-cooled water chilling unit comprises a condenser, a water pump and a water storage tank, wherein the condenser comprises an air inlet side; the curtain subassembly sets up in the air inlet side, including the wet curtain that contains water, wet curtain air feed stream passes and then flows to the air inlet side. When the air flow passes through the wet curtain containing water, the temperature of the air flow is reduced along with evaporation and heat absorption in the process that the moisture in the wet curtain is changed into gas from liquid, so that the temperature of the air flow entering the condenser for heat exchange is reduced, and when the air flow with lower temperature exchanges heat in the condenser, more high-temperature high-pressure gaseous refrigerant can be condensed and liquefied, so that the energy efficiency ratio of the air-cooled water chilling unit is improved.

Description

Air-cooled water chilling unit

Technical Field

The application relates to the technical field of air conditioners, in particular to an air-cooled water chilling unit.

Background

Climate change is a global problem facing human beings, and with carbon dioxide emission of various countries, greenhouse gases are increased rapidly, thus forming a threat to life systems. In this context, countries around the world reduce greenhouse gas in a global contractual manner, and thus our country proposes carbon peak-to-peak and carbon neutralization targets. Carbon peak reaching means that the emission of carbon dioxide does not increase until 2030 years of commitment in China, and the emission of carbon dioxide gradually decreases after the carbon peak reaching; carbon neutralization means that enterprises, groups or individuals measure and calculate the total amount of greenhouse gas emission generated directly or indirectly within a certain time, and the emission of carbon dioxide generated by the enterprises, the groups or the individuals is counteracted through the forms of afforestation, energy conservation, emission reduction and the like, so that zero emission of the carbon dioxide is realized.

The energy saving performance of the air-cooled chiller unit which is an important component of building energy consumption is further emphasized, and people need to find a mode with higher energy efficiency ratio to improve the energy saving performance.

SUMMERY OF THE UTILITY MODEL

The application provides an air-cooled water chilling unit, can improve air-cooled water chilling unit's energy efficiency ratio.

The air-cooled water chilling unit comprises a condenser and a water storage tank, wherein the condenser comprises an air inlet side; and the curtain assembly is arranged on the air inlet side and comprises a wet curtain containing water, and air supply flow of the wet curtain passes through the wet curtain and then flows to the air inlet side.

The air-cooled chiller sets up the curtain subassembly through the air inlet side at the condenser, and the curtain subassembly includes hydrous wet curtain, and wet curtain air feed stream passes and then flows to the air inlet side. When the air current passes through the wet curtain containing water, the moisture in the wet curtain is changed into the gaseous state along with the evaporation heat absorption in the process along with the moisture, so that the temperature of the air current is reduced, the temperature of the air current entering the condenser for heat exchange is reduced, and when the air current with lower temperature exchanges heat in the condenser, more high-temperature high-pressure gaseous refrigerant can be condensed and liquefied, the heat exchange quantity of the condenser is improved, the condensing pressure is reduced, and the energy efficiency ratio of the air-cooled water chilling unit is improved.

Drawings

FIG. 1 is a schematic diagram of the working principle of an air-cooled chiller;

FIG. 2 is a schematic view of an air-cooled chiller according to an embodiment of the present application;

FIG. 3 is a schematic view of a plurality of condensers according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a compression module and a condensation module arranged side by side according to the present application;

fig. 5 is a schematic diagram of a parallel arrangement of the compression module and the condensation module according to the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The air-cooled cooling water set of the embodiment of the application includes: a condenser including an air intake side; and the curtain component is arranged on the air inlet side and comprises a wet curtain containing water, and air flow supplied by the wet curtain passes through the wet curtain and then flows to the air inlet side.

The air-cooled water chilling unit is provided with a curtain component through the air inlet side of the condenser, the curtain component comprises a wet curtain containing water, and air flow supplied by the wet curtain passes through the wet curtain and then flows to the air inlet side. When the air flow passes through the wet curtain containing water, the temperature of the air flow is reduced along with evaporation and heat absorption in the process that the moisture in the wet curtain is changed into gas from liquid, so that the temperature of the air flow entering the condenser for heat exchange is reduced, and when the air flow with lower temperature exchanges heat in the condenser, more high-temperature high-pressure gaseous refrigerant can be condensed and liquefied, so that the energy efficiency ratio of the air-cooled water chilling unit is improved.

Fig. 1 is a schematic diagram of a refrigeration operation principle of an air-cooled chiller 10. The air-cooled chiller 10 includes an evaporator 110, a compressor 120, a condenser 130, and an expansion valve 140. The liquid refrigerant is arranged in the evaporator 110, the temperature of the environment to be cooled enables the liquid refrigerant in the evaporator 110 to be changed from a low-temperature low-pressure liquid state into a low-temperature low-pressure gaseous state, and the phase state change from the liquid state to the gaseous state takes away the heat in the environment to be cooled, so that the purpose of cooling is achieved.

The compressor 120 communicates with the evaporator 110, and the low-temperature low-pressure gas refrigerant flowing out of the evaporator 110 is changed into a high-temperature high-pressure gas refrigerant by the compressor 120. The compressor 120 communicates with the condenser 130, and the high-temperature and high-pressure gaseous refrigerant is condensed and liquefied in the condenser 130 into a high-temperature and high-pressure liquid refrigerant. The condenser 130 is connected to an expansion valve 140, and the high-temperature and high-pressure liquid refrigerant is changed into a low-temperature and low-pressure liquid refrigerant by the expansion valve 140, and then enters the evaporator 110 to circulate.

The condenser 130 condenses and liquefies the high-temperature and high-pressure gaseous refrigerant, and the heat exchange is performed by blowing cooling air through the condenser 130 filled with the high-temperature and high-pressure gaseous refrigerant.

Fig. 2 is a schematic diagram of an air-cooled chiller according to an embodiment of the present application. The air-cooled chiller 10 includes a condenser 130 and a curtain assembly 150. The condenser 130 includes an intake side 131, and the curtain assembly 150 is disposed on the intake side 131. The curtain assembly 150 includes a moisture laden wet curtain 151, with the wet curtain 151 providing a flow of air therethrough towards the air intake side 131.

The air-cooled chiller 10 is constructed by providing a curtain assembly 150 on the air intake side 131 of the condenser 130, the curtain assembly 150 including a moisture-laden wet curtain 151, the wet curtain 151 providing a flow of air therethrough to the air intake side 131. When the air flow passes through the wet curtain 151 containing water, the temperature of the air flow is reduced along with the heat absorption of evaporation in the process that the moisture in the wet curtain 151 is changed from a liquid state to a gas state, so that the temperature of the air flow entering the condenser 130 for heat exchange is reduced, and when the air flow with lower temperature exchanges heat in the condenser 130, more high-temperature and high-pressure gaseous refrigerant can be condensed and liquefied, so that the energy efficiency ratio of the air-cooled water chilling unit 10 is improved, wherein the energy efficiency ratio is the ratio of energy conversion efficiency, and the larger the energy efficiency ratio is, the more electric energy is saved.

The condenser 130 includes tubes (not shown) through which the refrigerant flows, which in some embodiments may be U or V coils. The condenser 130 comprises an air inlet side 131, and air flow enters the condenser 130 from the air inlet side 131 to exchange heat with the refrigerant, so that the purpose of phase change of the refrigerant is achieved. The condenser 130 further comprises an air outlet side 132, the air outlet side 132 and the air inlet side 131 are arranged on two sides of the condenser 130 and are communicated with each other, and air flow passes through all the coil pipes from the air inlet side 131 and flows out from the air outlet side 132, so that the air flow is fully utilized.

The curtain assembly 150 includes a moisture laden wet curtain 151, with the wet curtain 151 providing a flow of air therethrough towards the air intake side 131. The wet curtain 151 cools the air flow, so that the temperature of the air flow flowing into the air inlet side 131 is lower, and the effect of improving the energy efficiency ratio of the air-cooled water chilling unit 10 is achieved. In some embodiments, the wet curtain 151 is a honeycomb structure, is made of raw paper, and may be selected from wet curtains 151 having the advantages of high water absorption, high water resistance, mildew resistance, long service life, and the like. However, it should be noted that the material of the wet curtain 151 is not limited to the paper material.

In some embodiments, the wet curtain 151 is a bent structure, so that the area of the wet curtain 151 can be increased, and further the contact area between the airflow and the wet curtain 151 can be enlarged, so that the airflow and the wet curtain 151 are fully contacted, and a better cooling effect is achieved. In some embodiments, the wet curtain 151 may have a V-shaped structure, a W-shaped structure, a semicircular structure, etc., which may enlarge a contact area between the air flow and the wet curtain 151; wherein, V type structure, W type structure can be whole preparation, or according to actual need scene concatenation. In other embodiments, the wet curtain 151 may also be a flat plate structure.

In some embodiments, the curtain assembly 150 further includes a moisture removal curtain 152, the moisture removal curtain 152 configured to filter or remove water molecules from the airflow to increase the dryness of the airflow. The dehumidification curtain 152 is arranged between the dehumidification curtain 151 and the air inlet side 131, and the dehumidification curtain 152 allows air flow passing through the dehumidification curtain 151 to pass through and then flow to the air inlet side 131, so that the purposes of cooling and dehumidifying the air flow are achieved. The airflow passes through the wet curtain 151, a large amount of water molecules are entrained in the airflow, and the dehumidification curtain 152 can filter the water molecules in the airflow and prevent the water molecules in the airflow from entering the air inlet side 131 of the condenser 130, so that the humidity of the surface of the coil can be reduced and the coil can be corroded.

In some embodiments, the dehumidifying curtain 152 has a flat plate structure, and one side surface of the dehumidifying curtain 152 in the thickness direction is disposed parallel to the air inlet side 131. So set up, can reduce the clearance between dehumidification curtain 152 and air inlet side 131. The airflow passing through the wet curtain 151 flows through the dehumidifying curtain 152, and water molecules are filtered by the dehumidifying curtain 152, so that a large amount of water molecules can be prevented from directly entering the condenser 130 to corrode the coil. In other embodiments, the moisture removing curtain 152 may be provided in a bent structure. Further, the dehumidifying curtain 152 may be provided with a plurality of layers.

In some embodiments, the area of the desiccant curtain 152 is greater than or equal to the area of the air intake side 131 in an orthographic projection along a direction perpendicular to the desiccant curtain 152. So set up, dehumidification curtain 152 can cover air inlet side 131 completely, ensures that the air current that gets into air inlet side 131 all passes dehumidification curtain 152 and reenters air inlet side 131, prevents to the corruption of coil pipe in condenser 130.

In some embodiments, the wet curtain 151 is contiguous with the desiccant curtain 152, leaving a space 153 between the wet curtain 151 and the desiccant curtain 152; curtain assembly 150 further includes a water spray portion 154, water spray portion 154 being disposed within gap 153 with spray heads facing wet curtain 151 for spraying water toward wet curtain 151. So set up, can continuously keep wet curtain 151 moist, contain a large amount of hydrones, guarantee the cooling effect of wet curtain 151 to the air current. In some embodiments, the curtain assembly 150 is disposed below the condenser 130, and a water spray part 154 is disposed in a space 153 between the wet curtain 151 and the dehumidifying curtain 152, so that water drops or water flow can fall on the wet curtain 151 under the action of gravity, thereby ensuring the dehumidifying effect of the dehumidifying curtain 152.

In some embodiments, the air-cooled chiller 10 further includes a housing 160, the housing 160 includes a receiving chamber 161, an air inlet 162, and an air outlet 163, the air inlet 162 is used for air flow, and the air outlet 163 is communicated with the air inlet side 131 of the condenser 130; the curtain assembly 150 is disposed in the accommodating cavity 161, the accommodating cavity 161 is divided into a first cavity 1611 and a second cavity 1612 by the wet curtain 151, the first cavity 1611 is communicated with the air inlet 162, and the second cavity 1612 is communicated with the air outlet 163. With such an arrangement, the air flow can be guided to pass through the wet curtain 151 and the moisture removing curtain 152 in sequence and then enter the air inlet side 131 of the condenser 130. And can prevent external dust from entering the curtain assembly 150 or the air intake side 131, thereby preventing the condenser 130 from being affected in normal operation.

Referring to fig. 3, in some embodiments, the air-cooled chiller 10 includes a plurality of condensers 130, the plurality of condensers 130 are arranged in parallel, and the length direction of the curtain assembly 150 extends along the arrangement direction a of the condensers 130. So set up, a plurality of condensers 130 can adopt same curtain subassembly 150 to carry out the precooling of air current, conveniently arrange, and a plurality of condensers 130 can share same curtain subassembly 150, and curtain subassembly 150 extends along the direction of arranging of a plurality of condensers 130, easy to assemble and maintenance.

Referring to fig. 4 and 5, in some embodiments, the condenser 130 and the curtain assembly 150 are combined into a condensing module 200, and the air-cooled chiller 10 further includes a compression module 300 including a compressor 120, which is a split structure, so as to not increase the height of the air-cooled chiller 10, reduce the risk of tipping, and adapt to the field installation environment. The condensing module 200 includes a first port 210 disposed on the same side, and the compressing module 300 includes a second port 310 disposed on the same side. The first interface 210 is disposed on the same side of the condensing module 200, the first interface 210 includes a plurality of interfaces, the second interface 310 is disposed on the same side of the compressing module 300, and the second interface 310 includes a plurality of interfaces, so that the connection between the condensing module 200 and the compressing module 300 can prevent the connection pipeline from being entangled.

Referring to fig. 4, in some embodiments, the condensing module 200 and the compressing module 300 are arranged side by side, and the first interface 210 and the second interface 310 are located on the same side. The arrangement is such that the first interface 210 and the second interface 310 are located on the same side, which is convenient for connection and maintenance.

Referring to fig. 5, in some embodiments, the condensing module 200 is arranged in parallel with the compressing module 300, and the first port 210 is opposite to the second port 310. With such an arrangement, when the first connector 210 and the second connector 310 are connected by a hose, the length of the hose can be reduced, which is beneficial to improving energy efficiency.

In some embodiments, the condensing module 200 may further include a blower electric cabinet, a frame, a connection pipe (not shown), etc., and the compressing module 300 may further include an evaporator, an expansion valve, an oil separator, an electric cabinet, a frame, a filter, a connection pipe (not shown), etc.

In some embodiments, the first interface 210 includes a gas inlet 211 and a liquid outlet 212, and the second interface 310 includes a gas outlet 311 and a liquid inlet 312, wherein the gas inlet 211 and the gas outlet 311 are connected by a hose, and the liquid outlet 212 and the liquid inlet 312 are connected by a hose, so as to ensure the normal operation of the air-cooled chiller 10. In some embodiments, when there are multiple refrigeration system circuits, multiple first interfaces 210 and multiple second interfaces 310, the length of the hose connecting the different gaseous inlets 211 and the gaseous outlets 311 is close, and the length of the hose connecting the different liquid outlets 212 and the liquid inlets 312 is close, so as to ensure that the pressure drop of the suction and exhaust lines of each refrigeration system circuit is close.

Referring to FIG. 1, in some embodiments, to reduce the pressure loss of the curtain assembly 150 to the airflow, a high static pressure fan 170 may be employed.

In some embodiments, the first connector 210 and the second connector 310 are both configured as flange connectors, and before the manufacturing factory, the condensing module 200 fills nitrogen gas into the pipe communicated with the first connector 210, and the compressing module 300 fills nitrogen gas into the pipe communicated with the second connector 310, so as to protect the pipes. The first port 210 and the second port 310 are sealed by a sealing member, such as a sealing plate. When the connector is installed on site, the first connector 210 and the second connector 310 are connected through metal hoses, specifically, one metal hose is connected with the gas outlet 311 and the gas inlet 211, and one metal hose is connected with the liquid outlet 212 and the liquid inlet 312.

Taking a certain air-cooled chiller as an example, since the housing 160 blocks the airflow, when the wind speed passes through the curtain assembly 150 at 3m/s, the pressure drop of the curtain assembly 150 to the airflow is about 80 Pa. Assuming a national standard operating condition dry bulb temperature of 35 ℃ (wet bulb temperature of 24 ℃), the air dry bulb temperature drops to 27 ℃ (estimated from wet curtain manufacturer data) into the refrigerant coil after using the curtain assembly 150. After simulation calculation, the performance improvement data of the air-cooled chiller 10 is shown in table 1, wherein the COP of the air-cooled chiller 10 with the curtain assembly 150 is predicted to be about 3.6, which is about 18% higher than that of the standard model.

TABLE 1 prediction of performance of certain air-cooled chiller with curtain assembly

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (9)

1. An air-cooled chiller, comprising:

a condenser including an air intake side; and

the curtain component is arranged on the air inlet side and comprises a wet curtain containing water, and air flows through the wet curtain to flow to the air inlet side;

curtain subassembly is still including the dehumidification curtain that is arranged in filtering the aqueous humor in the air current, the dehumidification curtain is located wet the curtain with between the air inlet side, the dehumidification curtain supplies to pass the air current of wet curtain passes, and then flows to the air inlet side.

2. The air-cooled chiller according to claim 1 wherein said wet curtain is of a bent construction.

3. The air-cooled chiller according to claim 2 wherein said wet curtain is V-shaped, W-shaped or semi-circular.

4. The air-cooled chiller according to claim 1, wherein said wet curtain is contiguous with said moisture removal curtain, said wet curtain being positioned below said moisture removal curtain with a space therebetween;

the curtain component further comprises a water spraying part, and the water spraying part is arranged in the interval and used for spraying water to the wet curtain.

5. The air-cooled chiller according to claim 1 wherein said dehumidifying curtain is of a flat plate-like structure, and a surface of said dehumidifying curtain on one side in a thickness direction is disposed parallel to said intake side.

6. The air-cooled chiller according to claim 5 wherein the area of said dehumidification curtain is greater than or equal to the area of said air intake side in an orthographic projection in a direction perpendicular to said dehumidification curtain.

7. The air-cooled chiller according to any one of claims 1 to 6 further comprising a housing, said housing comprising a housing chamber, an air inlet into which an air stream flows, and an air outlet in communication with the air inlet side of said condenser;

the curtain assembly is arranged in the accommodating cavity, the accommodating cavity is divided into a first cavity and a second cavity by the wet curtain, the first cavity is communicated with the air inlet, and the second cavity is communicated with the air outlet.

8. The air-cooled chiller according to any one of claims 1 to 6 wherein said air-cooled chiller comprises a plurality of condensers, said plurality of condensers being arranged in parallel, said curtain assembly having a length direction extending along the arrangement direction of said condensers.

9. The air-cooled chiller according to claim 1 wherein said condenser and said curtain assembly are a condensing module, said air-cooled chiller further comprising a compression module including a compressor, said condensing module including a first port disposed on the same side, said compression module including a second port disposed on the same side;

the condensation module and the compression module are arranged side by side, and the first interface and the second interface are positioned on the same side; or

The condensation module and the compression module are arranged in parallel, and the first interface is opposite to the second interface.

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