CN219776032U

CN219776032U - Air-cooled chiller unit

Info

Publication number: CN219776032U
Application number: CN202320932371.8U
Authority: CN
Inventors: 张少文; 刘颖; 王超
Original assignee: Shandong Zhonghe Construction Technology Co ltd
Current assignee: Shandong Zhonghe Construction Technology Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-09-29
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses an air-cooled water chiller, which comprises a plurality of air-cooled water chillers arranged adjacently, and is characterized in that each water chiller at least comprises a hollow box body, a water chiller and a water chiller, wherein the box body comprises a hollow side wall and a top wall provided with at least two air outlets; the first condenser is positioned in the box body and is close to the side wall; the fans are arranged at the positions corresponding to the air outlets; and the second condenser is communicated with the first condenser, is positioned in the box body and divides the interior of the box body into a plurality of spaces corresponding to each fan. Therefore, according to the technical scheme provided by the utility model, by arranging the second condenser, after one fan fails, the cooling of the refrigerant in the condenser can still be carried out by means of the adjacent fan, so that the rapid reduction of the refrigerating effect and the continuous increase of energy consumption are prevented.

Description

Air-cooled chiller unit

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air-cooled chiller.

Background

The air-cooled chiller is a main central cold source device of a central air-conditioning system and is generally used for refrigerating in summer. The air-cooled chiller unit is widely used at present because of the advantages of flexibility, convenient installation and the like.

Basic principle of refrigerating system of air-cooled chiller unit: the liquid refrigerant absorbs the heat of the cooled object in the evaporator, and then is vaporized into low-temperature low-pressure steam, the steam is sucked by the compressor, compressed into high-pressure high-temperature steam and discharged into the condenser, the heat is released to the cooling medium (water or air) in the condenser, the high-pressure liquid is condensed into high-pressure liquid, the high-pressure liquid is throttled into low-temperature low-pressure refrigerant through the throttle valve, and the low-pressure refrigerant enters the evaporator again to absorb heat and vaporize, so that the aim of circulating refrigeration is achieved. Thus, the refrigerant completes a refrigeration cycle through four basic processes of evaporation, compression, condensation and throttling in the system.

The air-cooled chiller mainly comprises a compressor, a condenser, an evaporator and an expansion valve. The compressor is used for compressing low-temperature gas into high-temperature gas through the compressor; the condenser is used for cooling the high-temperature and high-pressure refrigerant superheated steam discharged by the compressor into liquid or gas-liquid mixture, and the heat released by the refrigerant in the condenser is taken away by a cooling medium (water or air); the air-cooled chiller is generally an air-cooled condenser, wherein the air-cooled condenser takes air as a cooling medium, and the condensation heat is taken away by the temperature rise of the air; expansion valve: the expansion valve on the air-cooled chiller is a thermal expansion valve, the thermal expansion valve controls the flow of the refrigerant entering the evaporator by sensing the superheat degree of the gaseous refrigerant at the outlet of the evaporator, so that the high-pressure liquid from the condenser is throttled and depressurized, and the liquid refrigerant is vaporized and absorbs heat under low pressure (low temperature); an evaporator: the evaporator is used for utilizing the liquid low-temperature refrigerant to be easily evaporated under low pressure, converting the liquid low-temperature refrigerant into steam and absorbing the heat of a cooled medium so as to achieve the aim of cooling.

The fan of the air-cooled chiller is very important, and is a part of the finned condenser of the air-cooled chiller, which is continuously exchanged with air, and once the heat dissipation is poor, the chiller cannot normally refrigerate. Especially when one of the fans fails, not only the refrigeration effect is affected, but also the energy consumption is increased. The existing air-cooled chiller does not have an effective monitoring mechanism and a compensation mechanism for the running state of the fan, and cannot be found out in time when the fan fails, and during the period, the cooling effect is continuously reduced and the energy consumption is increased, so that the compensation of the air exchange efficiency when the fan fails becomes important.

Disclosure of Invention

The utility model aims to provide an air-cooled chiller, which can solve the problems that after a fan fails in the prior art, the refrigeration effect is rapidly reduced and the energy consumption is continuously increased.

In order to achieve the aim, the utility model provides an air-cooled chiller, which comprises a plurality of air-cooled chillers adjacently arranged, and is characterized in that each chiller at least comprises a hollow box body, a water tank and a water tank, wherein the hollow box body comprises a hollow side wall and a top wall provided with at least two air outlets; the first condenser is positioned in the box body and is close to the side wall; the fans are arranged at the positions corresponding to the air outlets; and the second condenser is communicated with the first condenser, is positioned in the box body and divides the interior of the box body into a plurality of spaces corresponding to each fan.

Further, the first condenser has a first portion and a second portion disposed at an incline in the tank and having a V-shaped cross section.

Further, the second condenser extends downwardly from the top wall.

Further, the refrigeration system also comprises at least one compressor, at least one expansion valve and at least one evaporator which are communicated with the first condenser and the second condenser through an inlet pipeline and an outlet pipeline so as to form at least one refrigeration cycle.

Further, the inlet pipeline and the outlet pipeline are respectively provided with electromagnetic valves.

Further, the fan control device also comprises a controller, wherein the controller is used for controlling the electromagnetic valve according to the running state of the fan; the first condenser is communicated with an inlet pipeline through an electromagnetic valve, and the first condenser and the second condenser are respectively communicated with an outlet pipeline through an electromagnetic valve; when the controller monitors the fan fault, a control signal is generated so that the electromagnetic valve between the first condenser and the outlet pipeline is closed, and the electromagnetic valve between the first condenser and the inlet pipeline and the electromagnetic valve between the second condenser and the outlet pipeline are kept open.

Therefore, according to the technical scheme provided by the utility model, by arranging the second condenser, after one fan fails, the cooling of the refrigerant in the condenser can still be carried out by means of the adjacent fan, so that the rapid reduction of the refrigerating effect and the continuous increase of energy consumption are prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an air-cooled chiller in the prior art;

FIG. 2 is a schematic diagram of a wind-cooled chiller in accordance with one embodiment of the present utility model;

FIG. 3 is a schematic diagram of the internal structure of a wind-cooling chiller according to an embodiment of the present utility model;

FIG. 4 is a schematic view of A-A in cross-section in one embodiment provided by the present utility model;

fig. 5 is a schematic diagram of an internal structure of an air-cooled chiller according to an embodiment of the present utility model.

In the figure, 1, a box body; 10. a first fan; 11. a second fan; 21. an inlet line; 22. an outlet line; 3. an electromagnetic valve; 310. a first electromagnetic valve; 320. a second electromagnetic valve; 330. a third electromagnetic valve; 340. a fourth electromagnetic valve; 350. a fifth electromagnetic valve; 360. a sixth electromagnetic valve; 4. a second condenser; 5. a first condenser; 6. a controller; 7. a control circuit; 8. a sidewall; 9. a top wall.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the running process, the fan of the air-cooled water cooler can drive air flow to circulate outside and inside the air cooler. Under normal conditions, all fans drive the corresponding air in the space to circulate inside and outside the box body through the fan blades. However, when one fan fails and does not rotate, the air flow in the space corresponding to the failed fan is inevitably affected. In addition, since the fan is located at the top wall opening, the space is generally larger than the hollow hole of the side wall, that is, the airflow resistance at the air outlet of the fan is smaller than that of the side wall of the box. At this time, under the effect of the adjacent fans, the air flow can enter from the top wall air outlet of the fault fan preferentially, so that the air entering from the hollow side wall is greatly reduced. As shown in fig. 1, when the second fan 11 fails and stops operating, since the first fan 10 is still operating normally, the air flow enters from the air outlet of the second fan 11 under the action of the first fan 10 and is discharged by the first fan 10. In this way, most of the air flow circulates between the first fan 10 and the second fan 11, so that the cooling of the condenser of the whole air-cooled water-cooled unit is greatly affected. Therefore, in order to ensure that the functions of the air-cooled water-cooling unit are not affected, the energy consumption is reduced, and it is necessary to ensure that the cooling effect is not greatly affected after the second fan 11 fails.

In order to achieve the above objective, please refer to fig. 2 to 5 together, the present utility model provides an air-cooled chiller, comprising a plurality of adjacent chillers, wherein each chiller at least comprises a hollow box 1, wherein the box 1 comprises a hollow side wall 8 and a top wall 9 provided with at least two air outlets; a first condenser 5, wherein the first condenser 5 is positioned inside the box 1 and is close to the side wall 8; the fans are arranged at the positions corresponding to the air outlets; and a second condenser 4 communicating with the first condenser 5, the second condenser 4 being located inside the cabinet 1 and dividing the interior of the cabinet 1 into a plurality of spaces corresponding to each fan.

By arranging the second condenser 4, when the second fan 11 fails and stops running, the air flow can still cool the refrigerant in the condenser in the process of flowing from the air outlet where the second fan is positioned to the first fan 10, so that the normal running of the whole air-cooled water cooling unit is ensured.

In one realisable form, as shown in fig. 2, the first condenser 5 has a first portion and a second portion, which are arranged at an incline in the tank and have a V-shaped cross section. By arranging the V-shape of the first condenser, the contact area between the condenser and the air can be increased, thereby improving the cooling effect on the condenser.

In one possible way, as shown in fig. 4, the second condenser 4 extends downwards from the top wall. The height of the second condenser 4 may be equal to the height of the projection of the first condenser 5 in the height direction, and likewise, the width of the second condenser may be equal to the width projection of the first condenser 5 in the width direction. In this way, the second condenser can divide the case 1 into a plurality of spaces corresponding to the fans, and the contact area between the second condenser and the air flow can be increased, thereby improving the cooling effect on the refrigerant in the second condenser.

In one realisable form, it further comprises at least one compressor, at least one expansion valve, at least one evaporator in communication with said first condenser 5, second condenser 4 through an inlet line 21 and an outlet line 22, to form at least one refrigeration cycle. The second condenser is connected with the first condenser through a pipeline, the refrigerant sequentially enters the first condenser and the second condenser through an inlet pipeline 21 and flows out of an outlet pipeline 22, and at least one compressor, at least one expansion valve and at least one evaporator are communicated between the outlet pipeline 22 and the inlet pipeline 21, so that after a certain fan fails, the effect is only generated on the refrigeration cycle corresponding to the fan. The refrigeration cycle of the adjacent water chiller is not affected, and the refrigeration cycle corresponding to the failed fan is compensated to a certain extent, so that the influence of the failed fan on the whole unit is reduced.

In one possible way, as shown in fig. 3, the inlet line 21 and the outlet line 22 are each provided with a solenoid valve. Through setting up the solenoid valve, can conveniently manage the pipeline of the cold water machine that the trouble fan corresponds. The electromagnetic valve can adjust the flow rate of the refrigerant passing through. For example, after the second fan 11 fails, the flow rate of the refrigerant flowing through the second condenser may be increased by adjusting the first electromagnetic valve 310 and the second electromagnetic valve 320, so that more refrigerant in the chiller corresponding to the first fan may be cooled by the air flow flowing through the chiller, and the influence of the failed fan is further reduced. Of course, the third electromagnetic valve 330 and the fourth electromagnetic valve 340 may be adjusted simultaneously, so that the flow of the refrigerant in the chiller corresponding to the first fan 10 is increased, more refrigerant in the chiller corresponding to the first fan 10 may be cooled by the flowing air, and the influence of the partition failure fan on the area is reduced.

Of course, when a fan fails, the first condenser in the space corresponding to the fan can be stopped to be used, and the second condenser can be used for replacing the first condenser. In one implementation, as shown in fig. 5, a controller may also be provided for controlling the solenoid valve according to the fan operating state. The controller 6 may be composed of a monitoring module and a control module. The monitoring module is used for monitoring the running state of the fan and generating corresponding electric signals, and the control module receives the electric signals of the monitoring module and generates corresponding control signals according to the corresponding electric signals and transmits the control signals to the electromagnetic valves in the corresponding areas of the fan. For example, in the normal state, all solenoid valves in the figure remain open, or only solenoid valves between the second condenser and the outlet management are closed. When the second fan 11 fails, after the monitoring module of the corresponding controller 6 monitors that the running state of the fan fails, a corresponding electric signal representing the failure of the fan is generated and transmitted to the control module, the control module receives the corresponding electric signal, generates a corresponding control signal according to the electric signal, and transmits the corresponding control signal to the first electromagnetic valve 310, the second electromagnetic valve 320 and the fifth electromagnetic valve respectively through the control circuit 7, so that the first electromagnetic valve 310 is normally opened, the second electromagnetic valve 320 is closed, and the fifth electromagnetic valve 350 is normally opened. In this way, the passage between the first condenser and the outlet pipe is cut off, so that the refrigerant passes through the second condenser, and the refrigerant is prevented from passing through the first condenser and returning to the outlet circuit. Otherwise, if the fifth electromagnetic valve 350 is not closed, the refrigerant returns to the outlet loop through the first condenser, and the cooling effect is reduced because the refrigerant is not cooled, which affects the efficiency of the chiller. The controller 6 may use a PLC control system in the prior art, and the present utility model is not described herein.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides an air-cooled chiller, includes a plurality of adjacent settings's air-cooled chiller, its characterized in that, every the chiller includes at least:

the box body comprises a hollow side wall and a top wall provided with at least two air outlets;

the first condenser is positioned in the box body and is close to the side wall;

the fans are arranged at the positions corresponding to the air outlets;

and the second condenser is communicated with the first condenser, is positioned in the box body and divides the interior of the box body into a plurality of spaces corresponding to each fan.

2. The air-cooled chiller according to claim 1 wherein the first condenser has a first portion and a second portion, the first portion and the second portion being disposed at an incline within the housing and having a V-shaped cross-section.

3. The air-cooled chiller according to claim 2 wherein the second condenser extends downwardly from the top wall.

4. The air-cooled chiller according to claim 1 further comprising at least one compressor, at least one expansion valve, at least one evaporator in communication with the first condenser and the second condenser through inlet and outlet lines to form at least one refrigeration cycle.

5. An air-cooled chiller according to claim 4 wherein the inlet and outlet lines are each provided with solenoid valves.

6. The air-cooled chiller of claim 5, further comprising a controller for controlling the solenoid valve based on the fan operating condition;

the first condenser is communicated with an inlet pipeline through an electromagnetic valve, and the first condenser and the second condenser are respectively communicated with an outlet pipeline through an electromagnetic valve;

when the controller monitors the fan fault, a control signal is generated so that the electromagnetic valve between the first condenser and the outlet pipeline is closed, and the electromagnetic valve between the first condenser and the inlet pipeline and the electromagnetic valve between the second condenser and the outlet pipeline are kept open.