CN213931265U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN213931265U CN213931265U CN202023023418.4U CN202023023418U CN213931265U CN 213931265 U CN213931265 U CN 213931265U CN 202023023418 U CN202023023418 U CN 202023023418U CN 213931265 U CN213931265 U CN 213931265U
- Authority
- CN
- China
- Prior art keywords
- cooling
- temperature
- condenser
- air conditioning
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to an air conditioning technology field discloses an air conditioning system. The air conditioning system comprises a compressor, an evaporator, a restrictor and a condenser which are sequentially connected through refrigerant pipelines and are connected to form a refrigerant circulation loop. The air conditioning system also includes a cooling tower, a coolant pipe, a water pump, and a bypass line. The cooling liquid pipe comprises a first cooling liquid pipe and a second cooling liquid pipe, two ends of the first cooling liquid pipe are respectively communicated with a water inlet of the cooling tower and a cooling water outlet of the condenser, and two ends of the second cooling liquid pipe are respectively communicated with a water outlet of the cooling tower and a cooling water inlet of the condenser so as to form a cooling water circulation loop; the water pump is arranged on the second cooling liquid pipe. Two ends of the bypass pipeline are respectively communicated with the first cooling liquid pipe and the second cooling liquid pipe and are arranged between the water pump and the condenser, and a bypass valve is arranged on the bypass pipeline. The utility model discloses guaranteed the higher temperature of the refrigerant in the entering evaporator, avoided the condition that the evaporator frosted, reduced the maintenance cost.
Description
Technical Field
The utility model relates to an air conditioning technology field especially relates to an air conditioning system.
Background
In general, a common air conditioner performs indoor cooling under a high outdoor environment temperature, and for some special places such as medical warehouses, wine cellars, laboratories and the like, under a low outdoor environment temperature, in order to ensure the storage quality of indoor articles or the application environment, the environment temperature must be kept within a certain temperature range, and at this time, the air conditioner needs to perform cooling under a low temperature environment. Particularly in plateau areas, the temperature of the air conditioner needs to be set at 18 ℃, because the plateau air density is low, the relative humidity and the temperature of the air are also low, the heat exchange effect of an evaporator is poor, the evaporation temperature is low, meanwhile, the temperature of cooling water entering a condenser is low, the condensation temperature is also reduced, namely, the temperature of a refrigerant reduced after passing through the condenser is high, the evaporation temperature is further reduced, and the problem that the evaporator frosts easily occurs in the air conditioner at the moment. In addition, under the condition of low temperature and low humidity, because the exhaust temperature of the compressor is lower, and the evaporating pressure is small, more lubricating oil can be brought into a refrigerant pipeline system, and then is stored in the evaporator at a lower temperature, and the lubricating oil can not be smoothly brought back to the compressor, so that the oil shortage and the abrasion of the compressor are caused, the compressor can be damaged in serious conditions, and the use safety of the air conditioner is reduced. Generally, after a traditional air conditioner evaporator frosts, a fan or a compressor needs to be stopped, and then manual defrosting, stop defrosting, electric heating defrosting, hot gas bypass defrosting, four-way valve reversing reverse defrosting and the like are carried out. The compressor needs to be shut down in the defrosting process, the indoor refrigerating effect is affected, the indoor temperature fluctuation is large, and the user experience is poor.
Based on this, there is a need for an air conditioning system to solve the above mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air conditioning system has guaranteed the higher temperature of the refrigerant that gets into in the evaporimeter, has avoided the evaporimeter condition of frosting, has reduced the maintenance cost, has also avoided the compressor to lack the condition emergence of oil damage simultaneously, has improved the safety in utilization.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides an air conditioning system, includes compressor, evaporimeter, flow controller, condenser and refrigerant pipeline, just the compressor the evaporimeter the flow controller with the refrigerant interface of condenser loops through the refrigerant pipe connection forms the circulation circuit of refrigerant, still includes:
a cooling tower;
the cooling liquid pipe comprises a first cooling liquid pipe and a second cooling liquid pipe, two ends of the first cooling liquid pipe are respectively communicated with the water inlet of the cooling tower and the cooling water outlet of the condenser, and two ends of the second cooling liquid pipe are respectively communicated with the water outlet of the cooling tower and the cooling water inlet of the condenser so as to form a cooling water circulation loop;
the water pump is arranged on the second cooling liquid pipe;
and two ends of the bypass pipeline are respectively communicated with the first cooling liquid pipe and the second cooling liquid pipe, a bypass valve is arranged on the bypass pipeline, and the bypass pipeline is arranged between the water pump and the condenser.
Preferably, the air conditioning system further includes a first temperature sensor disposed on the second cooling liquid pipe and between the bypass line and the condenser, the first temperature sensor being capable of measuring a temperature of the cooling water flowing into the condenser.
Preferably, the air conditioning system further includes a second temperature sensor, the second temperature sensor is disposed on the evaporator, and the second temperature sensor is capable of measuring a temperature of a refrigerant in a coil pipe of the evaporator.
Preferably, a flow meter is provided on the circulation loop of the cooling water, and the flow meter is capable of measuring the volume of the cooling water in the circulation loop of the cooling water.
Preferably, the flow meter is disposed on the first coolant pipe and is disposed between the bypass line and the cooling tower.
Preferably, a first filter is arranged on a refrigerant pipeline between the throttler and the condenser.
Preferably, a second filter is arranged on the second cooling liquid pipe, and the second filter is arranged between the water pump and the cooling tower.
Preferably, the refrigerant pipelines at both ends of the compressor are provided with detection valves.
Preferably, the evaporator is a finned evaporator.
Preferably, the bypass valve is a solenoid valve.
The utility model has the advantages that:
the air conditioning system that this embodiment provided sets up bypass pipeline between first coolant pipe and second coolant pipe, and sets up the bypass valve on bypass pipeline, and the water pump setting is close to one side of cooling tower at the pipeline. When the ambient temperature that the air conditioner is in is lower or the cooling water temperature that gets into the condenser is lower, open the bypass valve this moment, under the effect of water pump, in part cooling water gets into the bypass pipeline, reduce the volume that gets into condenser cooling water, reduced the effect that the condenser reduces the refrigerant temperature to improve the temperature of the refrigerant that gets into in the evaporimeter, made it be higher than freezing temperature, solved the problem of frosting on the evaporimeter, guaranteed evaporating pressure again, avoided the condition emergence of compressor oil shortage wearing and tearing, reduced the maintenance cost. And part of cooling water enters the first cooling liquid pipe through the bypass pipeline, so that the amount of the cooling water entering the condenser is reduced, the integral volume of the cooling water in the cooling water circulation loop is not reduced, the operation of the cooling water circulation loop is ensured, and the shutdown maintenance is further avoided. The air conditioning system provided by the embodiment avoids the frosting condition of the evaporator, reduces the maintenance cost, further avoids the shutdown of the compressor, ensures the indoor refrigeration effect, ensures the functionality of the air conditioning system, avoids the oil shortage damage of the compressor, and improves the use safety.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention.
In the figure:
1. a cooling tower;
21. a first coolant tube; 211. a flow meter; 22. a second coolant tube; 221. a second filter;
3. a condenser; 4. a water pump; 5. a bypass line; 51. a bypass valve;
61. a first temperature sensor; 62. a second temperature sensor; 7. a compressor; 8. an evaporator;
9. a restrictor; 10. a refrigerant pipeline; 101. a first filter; 102. and detecting the valve.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides an air conditioning system, which comprises a compressor 7, an evaporator 8, a restrictor 9, a condenser 3 and a refrigerant pipeline 10, wherein refrigerant interfaces of the compressor 7, the evaporator 8, the restrictor 9 and the condenser 3 are connected through the refrigerant pipeline 10 in sequence to form a refrigerant circulation loop. Specifically, as shown in fig. 1, the air conditioning system further includes a cooling tower 1, a coolant pipe, a water pump 4, and a bypass line 5. The cooling liquid pipe comprises a first cooling liquid pipe 21 and a second cooling liquid pipe 22, two ends of the first cooling liquid pipe 21 are respectively communicated with the water inlet of the cooling tower 1 and the cooling water outlet of the condenser 3, and two ends of the second cooling liquid pipe 22 are respectively communicated with the water outlet of the cooling tower 1 and the cooling water inlet of the condenser 3 to form a cooling water circulation loop. The water pump 4 is provided on the second coolant pipe 22. Two ends of the bypass pipeline 5 are respectively communicated with the first cooling liquid pipe 21 and the second cooling liquid pipe 22, a bypass valve 51 is arranged on the bypass pipeline 5, and the bypass pipeline 5 is arranged between the water pump 4 and the condenser 3. A bypass line 5 is provided between the first coolant pipe 21 and the second coolant pipe 22, a bypass valve 51 is provided in the bypass line 5, and a water pump 4 is provided on the side of the second coolant pipe 22 close to the cooling tower 1. When the ambient temperature of the air conditioner is high or the water temperature of the cooling water is high, the bypass valve 51 is in a closed state, all the cooling water can enter the condenser 3, and the cooling effect on the refrigerant is achieved. When the ambient temperature of the air conditioner is low or the temperature of the cooling water entering the condenser 3 is low, the bypass valve 51 is opened at the moment, part of the cooling water enters the bypass pipeline 5 under the action of the water pump 4, the amount of the cooling water entering the condenser 3 is reduced, the effect of reducing the temperature of the refrigerant by the condenser 3 is reduced, the temperature of the refrigerant entering the evaporator 8 is improved and is higher than the freezing temperature, the problem of frosting on the evaporator 8 is solved, the evaporation pressure is guaranteed, the condition of oil shortage and abrasion of the compressor 7 is avoided, and the maintenance cost is reduced. And part of the cooling water enters the first cooling liquid pipe 21 through the bypass pipeline 5, so that the amount of the cooling water entering the condenser 3 is reduced, the integral volume of the cooling water in the cooling water circulation loop is not reduced, the operation of the cooling water circulation loop is ensured, and the shutdown maintenance is further avoided. The air conditioning system provided by the embodiment avoids the frosting condition of the evaporator 8, reduces the maintenance cost, further avoids the shutdown of the compressor 7, ensures the indoor refrigeration effect, ensures the functionality of the air conditioning system, also avoids the oil shortage shutdown condition of the compressor 7, and improves the use safety. It is understood that the cooling tower 1 is provided with a fan, and the fan of the cooling tower 1 can reduce the temperature of the cooling water flowing through the cooling tower 1.
The refrigerant interfaces of the compressor 7, the evaporator 8, the restrictor 9 and the condenser 3 are sequentially connected through the refrigerant pipeline 10 to form a refrigerant circulation loop, and for the prior art, the refrigerant interface of the compressor 7, the refrigerant interface of the evaporator 8, the refrigerant interface of the restrictor 9 and the refrigerant interface of the condenser 3 are specifically connected in sequence to form a refrigerant circulation loop, which is not described herein again.
Preferably, the bypass valve 51 is an electromagnetic valve, which improves the automation degree and facilitates automatic control of opening and closing of the bypass valve 51 according to the ambient temperature. And the bypass valve 51 is an electromagnetic valve whose opening degree can be adjusted. In other embodiments, the bypass valve 51 may also be a hand valve, which is not limited herein.
Preferably, the air conditioning system further comprises a first temperature sensor 61. First temperature sensor 61 sets up on second coolant pipe 22, and set up between bypass pipeline 5 and condenser 3, first temperature sensor 61 can measure the temperature of the cooling water that flows into condenser 3, be convenient for measure the temperature of the cooling water that flows into condenser 3, can judge the cooling effect of cooling water to the refrigerant, thereby be convenient for control by-pass valve 51 opens and close, only make partial cooling water flow into condenser 3, the cooling effect to the refrigerant of condenser 3 of flowing through has been reduced, thereby the temperature of the refrigerant in the entering evaporimeter 8 has been improved, make it be higher than the temperature of icing, the problem of frosting on evaporimeter 8 has been solved, vapor pressure has been guaranteed again, the condition of compressor 7 oil shortage wearing and tearing has been avoided takes place.
Preferably, the air conditioning system further includes a second temperature sensor 62, the second temperature sensor 62 is disposed on the evaporator 8, and the second temperature sensor 62 can measure the temperature of the refrigerant in the coil of the evaporator 8, can accurately measure the temperature of the evaporator 8, and can accurately control the opening and closing of the bypass valve 51 according to the temperature of the evaporator 8.
Preferably, the flow meter 211 is arranged on the cooling water circulation loop, and the flow meter 211 can measure the volume of the cooling water in the cooling water circulation loop, so that the volume of the cooling water in the cooling water circulation loop can be conveniently measured, the operation of the cooling water circulation loop is ensured, the shutdown maintenance is avoided, and the maintenance cost is reduced.
Specifically, the flow meter 211 is disposed on the first cooling liquid pipe 21 and disposed between the bypass line 5 and the cooling tower 1, and the flow meter 211 is disposed between the bypass line 5 and the cooling tower 1, so that the flow meter 211 can also measure the amount of the cooling water flowing into the first cooling liquid pipe 21 from the bypass line 5, and thus the flow meter 211 can measure the amount of the entire cooling liquid actually in the circulation loop of the cooling liquid, the accuracy of measurement is improved, shutdown maintenance due to the fact that the measured volume of the cooling water is too small is avoided, and the maintenance cost is reduced.
Preferably, a first filter 101 is disposed on the refrigerant pipe 10 between the throttle 9 and the condenser 3, and the first filter 101 is used for filtering the refrigerant. Further, a second filter 221 is disposed on the second cooling liquid pipe 22, the second filter 221 is disposed between the water pump 4 and the cooling tower 1, and the second filter 221 is used for filtering the cooling water. In the present embodiment, the evaporator 8 is a fin evaporator. It can be understood that the evaporator 8 is provided with a fan, and the fan of the evaporator 8 can reduce the temperature of the refrigerant passing through the evaporator 8.
Preferably, the refrigerant pipelines 10 at both ends of the compressor 7 are provided with detection valves 102, which is convenient for detecting and maintaining the compressor 7.
For easy understanding, the air conditioning system uses the following control method, which includes the steps of:
s1, acquiring a return air temperature T0 at a return air inlet of the air conditioning system;
s2, judging whether the return air temperature T0 is less than the preset return air temperature T1', if so, executing the step S3, and if not, closing the bypass valve 51;
s3, acquiring the inlet water temperature T1 of the cooling water entering the condenser 3 from the cooling water inlet of the condenser 3;
s4, judging whether the inlet water temperature T1 is less than a first preset inlet water temperature T2', if so, opening the bypass valve 51 to an initial opening degree, closing a fan of the cooling tower 1, if not, closing the bypass valve 51, and going to the step S5;
s5, judging whether the inlet water temperature T1 is larger than a second preset inlet water temperature T3 ', wherein the first preset inlet water temperature T2 ' is smaller than the second preset inlet water temperature T3 ', if so, starting the fan of the cooling tower 1, and if not, stopping the fan of the cooling tower 1.
That is, the ambient temperature of the environment in which the air conditioner is located is determined by the return air temperature T0, and if the ambient temperature is higher than the preset return air temperature T1 ', the bypass valve 51 is closed, otherwise, the relationship between the inlet water temperature T1 of the condenser and the first preset inlet water temperature T2' is further determined. If the inlet water temperature T1 is less than the first preset inlet water temperature T2 ', the bypass valve 51 is opened and the fan of the cooling tower 1 is closed, thereby reducing the cooling effect of the cooling tower 1 on the cooling water, otherwise, the bypass valve 51 is closed and the relationship between the inlet water temperature T1 and the second preset inlet water temperature T3' is further determined. If the water inlet temperature T1 is greater than the second preset water inlet temperature T3', the fan of the cooling tower 1 is started, the cooling effect of the cooling tower 1 on the cooling water is recovered, the refrigeration effect of the cooling medium is guaranteed, otherwise, the cooling water is judged not to reach higher temperature, the fan of the cooling tower 1 is closed, the cooling effect on the cooling water is reduced, and the temperature of the cooling medium is increased.
According to the control method of the air conditioning system provided by the embodiment, the ambient temperature of the air conditioning system is judged through the return air temperature T0, and the cooling effect of cooling water on a refrigerant is judged through the water inlet temperature T1, so that whether the bypass valve 51 and the fan of the cooling tower 1 are opened or not is comprehensively judged, the temperature of the cooling water can be adjusted, and the judgment accuracy is improved through the common judgment of the two values of the return air temperature T0 and the water inlet temperature T1. Through the temperature of adjustment cooling water to the cooling capacity of the inside cooling water of adjustment condenser 3 to the refrigerant, and then the temperature of the refrigerant that changes to flow into in the evaporimeter 8 avoids the refrigerant in the evaporimeter 8 to be less than the temperature that freezes, has just also avoided the condition emergence that evaporimeter 8 frosted, has reduced the maintenance cost, and then has avoided compressor 7 to shut down, has guaranteed indoor refrigeration effect, has guaranteed air conditioning system's functionality. In addition, when the fan of cooling tower 1 was closed, behind the cooling water passed through condenser 3 in circulation loop many times, because the heat release process of refrigerant in condenser 3, and make the temperature of cooling water rise to a certain extent, further slowed down the refrigerant and released heat, guaranteed that the refrigerant that flows out condenser 3 has higher temperature, further avoided evaporimeter 8 to frost. And whether the fan of the cooling tower 1 is started or not is controlled according to the return air temperature T0 and the water inlet temperature T1, so that resources are saved, and the cost is reduced.
The control method of the present air conditioning system will be described in detail below.
And S1, acquiring the return air temperature T0 at a return air inlet of the air conditioning system.
In the present embodiment, the ambient temperature of the air conditioning system is determined by the return air temperature T0. In other embodiments, temperatures at other locations may also be measured to represent ambient temperature.
And S2, judging whether the return air temperature T0 is less than the preset return air temperature T1', if so, executing the step S3, and if not, closing the bypass valve 51.
If the return air temperature T0 is greater than or equal to the preset return air temperature T1', the environment temperature is judged to be high, the bypass valve 51 is closed, all cooling water can enter the condenser 3, and the cooling effect on the refrigerant is achieved. And if the return air temperature T0 is less than the preset return air temperature T1', judging that the environment temperature is lower. In this embodiment, the preset return air temperature T1' is set to range from 15 ℃ to 25 ℃. In other embodiments, the range of the preset return air temperature T1' can be adaptively adjusted according to actual conditions. Further, the return air temperature T0 is acquired specifically using a temperature sensor.
S3, acquiring the water inlet temperature T1 of the cooling water entering the condenser 3 from the cooling water inlet of the condenser 3.
In the present embodiment, the temperature T1 of the incoming water is measured on the second coolant pipe 22 by the first temperature sensor 61.
S4, judging whether the inlet water temperature T1 is less than a first preset inlet water temperature T2', if so, opening the bypass valve 51 to an initial opening degree, closing the fan of the cooling tower 1, if not, closing the bypass valve 51, and going to the step S5.
If the inlet water temperature T1 is greater than or equal to the first predetermined inlet water temperature T2', it is determined that the inlet water temperature T1 is high, the cooling effect of the cooling water on the refrigerant is low, and the temperature of the refrigerant flowing into the evaporator 8 is high, so that the evaporator 8 can be prevented from frosting. If the inlet water temperature T1 is less than the first preset inlet water temperature T2', the inlet water temperature T1 is judged to be low, the cooling effect of cooling water on the refrigerant is high, the evaporator 8 has the possibility of frosting, the bypass valve 51 is opened, the amount of the cooling water entering the condenser 3 is reduced, the cooling effect on the refrigerant is reduced, the evaporator 8 is prevented from frosting, and the maintenance cost is reduced. Judge the cooling effect of cooling water to the refrigerant through temperature T1 of intaking, again according to return air temperature T0, whether the fan of comprehensive judgement bypass valve 51 and cooling tower 1 opens, can adjust the temperature of cooling water, judge jointly through two numerical values of return air temperature T0 and temperature T1, also improved the accuracy of judging. When the fan of the cooling tower 1 is closed, the cooling water passes through the condenser 3 for multiple times in the circulation loop, and the temperature of the cooling water rises to a certain extent due to the heat release process of the refrigerant in the condenser 3, so that the heat release of the refrigerant is further slowed down, the refrigerant flowing out of the condenser 3 is ensured to have higher temperature, and the frosting of the evaporator 8 is further avoided.
In this embodiment, the first predetermined inlet water temperature T2' is in the range of 20 ℃ to 30 ℃. In other embodiments, the value range of the first preset inlet water temperature T2' may be adaptively adjusted according to actual conditions.
Preferably, in step S4, the initial opening degree of the bypass valve 51 is 10%. In other embodiments, the initial opening of the bypass valve 51 may have other values, and is not limited herein.
Specifically, in step S4, when the determination result is yes, the method further includes:
s41, acquiring the coil temperature T2 at the coil in the evaporator 8.
In this embodiment, the second temperature sensor 62 is specifically used to measure the coil temperature T2.
Preferably, in step S41, the air conditioning system obtains the coil temperature T2 once every preset time period T of operation.
Due to the fact that the temperature T2 of the coil is measured for many times, the temperature T2 of the coil can be monitored in real time, the condition that the evaporator 8 is frosted is further avoided, the functionality of the air conditioning system is guaranteed, and the accuracy of judgment is improved. In this embodiment, the preset time period t is 0-10 s. In other embodiments, the value range of the preset time t may be adaptively adjusted according to the actual situation, which is not limited herein. Similarly, the water inlet temperature T1 can be measured for multiple times within a certain time period, the water inlet temperature T1 can be monitored in real time, and the time period of the measurement interval can be adjusted according to the adaptability of the actual situation.
And S42, judging whether the coil temperature T2 is less than the preset coil temperature T4', if so, adjusting the opening degree of the bypass valve 51, and if not, keeping the opening degree of the bypass valve 51 unchanged.
If the coil temperature T2 is greater than or equal to the preset coil temperature T4', it is determined that the coil temperature T2 is high, the evaporator 8 will not frost, and the bypass valve 51 can maintain the existing opening. Coil temperature T2 < preset coil temperature T4', then judge that coil temperature T2 is lower, evaporator 8 has the possibility of frosting, increases the aperture of bypass valve 51, further reduces the volume of the cooling water that can get into condenser 3, reduces the cooling effect to the refrigerant, prevents evaporator 8 frosting, has reduced the maintenance cost. In other embodiments, when the coil temperature T2 is greater than or equal to the preset coil temperature T4', the opening of the bypass valve 51 may be reduced appropriately, which is not limited herein.
In this embodiment, the preset coil temperature T4' is in the range of 0-5 ℃. In other embodiments, the value range of the preset coil temperature T4 'may be adaptively adjusted according to actual conditions such as altitude or barometric pressure, but it is necessary to ensure that the preset coil temperature T4' is greater than the freezing temperature.
Preferably, in step S42, specifically, the method includes: if the determination result is yes, the opening degree of the bypass valve 51 is increased by 10% each time.
If the determination result is yes, it is determined that the coil temperature T2 at the coil of the evaporator 8 is low, and in order to avoid that the refrigerant temperature flowing through the evaporator 8 is low, the opening degree of the bypass valve 51 is increased by 10% each time, and the cooling effect of the condenser 3 on the refrigerant is reduced. In other embodiments, the opening degree of the bypass valve 51 may be other values each time it is increased, and is not limited herein. It is understood that the opening degree of the bypass valve 51 is stopped when increasing to 100%.
S5, judging whether the inlet water temperature T1 is larger than a second preset inlet water temperature T3 ', wherein the first preset inlet water temperature T2 ' is smaller than the second preset inlet water temperature T3 ', if so, starting the fan of the cooling tower 1, and if not, stopping the fan of the cooling tower 1.
If the inlet water temperature T1 > the second preset inlet water temperature T3', it is judged that the inlet water temperature T1 is high and the cooling effect on the refrigerant is too low, and in order to ensure the normal realization of the cooling function of the air conditioner, the fan of the cooling tower 1 needs to be started to cool the cooling water. If the inlet water temperature T1 is not more than the second preset inlet water temperature T3', the inlet water temperature T1 is judged to be higher, but the inlet water temperature T3 has a certain cooling effect on the refrigerant, the air conditioner can normally realize the cooling function, the fan of the cooling tower 1 is turned off, resources are saved, and the cost is reduced. In this embodiment, the second predetermined inlet water temperature T3' is in the range of 30 ℃ to 40 ℃. In other embodiments, the value range of the second preset inlet water temperature T3 ' may be adaptively adjusted according to actual conditions, but it is required to ensure that the first preset inlet water temperature T2 ' < the second preset inlet water temperature T3 '.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides an air conditioning system, includes compressor (7), evaporimeter (8), throttle ware (9), condenser (3) and refrigerant pipeline (10), just compressor (7) evaporator (8) throttle ware (9) with the refrigerant interface of condenser (3) loops through refrigerant pipeline (10) connect the circulation circuit who forms the refrigerant, its characterized in that still includes:
a cooling tower (1);
the cooling liquid pipe comprises a first cooling liquid pipe (21) and a second cooling liquid pipe (22), two ends of the first cooling liquid pipe (21) are respectively communicated with a water inlet of the cooling tower (1) and a cooling water outlet of the condenser (3), two ends of the second cooling liquid pipe (22) are respectively communicated with a water outlet of the cooling tower (1) and a cooling water inlet of the condenser (3) to form a cooling water circulation loop;
a water pump (4) disposed on the second coolant pipe (22);
bypass pipeline (5), the both ends of bypass pipeline (5) communicate respectively in first coolant pipe (21) with second coolant pipe (22), be equipped with bypass valve (51) on bypass pipeline (5), bypass pipeline (5) are arranged in water pump (4) with between condenser (3).
2. Air conditioning system according to claim 1, characterized in that it further comprises a first temperature sensor (61), said first temperature sensor (61) being arranged on said second coolant pipe (22) and between said bypass line (5) and said condenser (3), said first temperature sensor (61) being able to measure the temperature of the cooling water flowing into said condenser (3).
3. Air conditioning system according to claim 1, characterized in that it further comprises a second temperature sensor (62), said second temperature sensor (62) being arranged on said evaporator (8), said second temperature sensor (62) being able to measure the temperature of the refrigerant inside the coil of said evaporator (8).
4. Air conditioning system according to claim 1, characterized in that a flow meter (211) is provided on the circulation circuit of the cooling water, said flow meter (211) being capable of measuring the volume of the cooling water in the circulation circuit of the cooling water.
5. Air conditioning system according to claim 4, characterized in that the flow meter (211) is arranged on the first coolant pipe (21) and is placed between the bypass line (5) and the cooling tower (1).
6. Air conditioning system according to claim 1, characterized in that a first filter (101) is provided in the refrigerant line (10) between the restriction (9) and the condenser (3).
7. Air conditioning system according to claim 1, characterized in that a second filter (221) is arranged on the second cooling liquid pipe (22), the second filter (221) being placed between the water pump (4) and the cooling tower (1).
8. The air conditioning system as claimed in claim 1, wherein a check valve (102) is disposed on each of the refrigerant pipes (10) at both ends of the compressor (7).
9. Air conditioning system according to claim 1, characterized in that the evaporator (8) is a finned evaporator.
10. Air conditioning system according to claim 1, characterized in that the bypass valve (51) is a solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023418.4U CN213931265U (en) | 2020-12-14 | 2020-12-14 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023418.4U CN213931265U (en) | 2020-12-14 | 2020-12-14 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213931265U true CN213931265U (en) | 2021-08-10 |
Family
ID=77152355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023023418.4U Active CN213931265U (en) | 2020-12-14 | 2020-12-14 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213931265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484190A (en) * | 2020-12-14 | 2021-03-12 | 广东欧科空调制冷有限公司 | Air conditioning system and control method thereof |
| CN116255749A (en) * | 2023-05-12 | 2023-06-13 | 广东美的暖通设备有限公司 | Temperature control unit, temperature control method, temperature control device and controller |
-
2020
- 2020-12-14 CN CN202023023418.4U patent/CN213931265U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484190A (en) * | 2020-12-14 | 2021-03-12 | 广东欧科空调制冷有限公司 | Air conditioning system and control method thereof |
| CN116255749A (en) * | 2023-05-12 | 2023-06-13 | 广东美的暖通设备有限公司 | Temperature control unit, temperature control method, temperature control device and controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110425112B (en) | Compressor liquid impact prevention air conditioner and compressor liquid impact prevention control method | |
| CN213931265U (en) | Air conditioning system | |
| CN112283993B (en) | Refrigeration control method and device and refrigeration equipment | |
| CN110319541B (en) | Unloading adjustment control method of large-displacement variable-frequency multi-split system | |
| EP4012294A1 (en) | Air conditioner and method of controlling the same | |
| CN211977168U (en) | Air conditioning system for preventing heating and frost accumulation | |
| EP4354048A1 (en) | Heat pump system and control method therefor | |
| CN208254038U (en) | A kind of critical-cross carbon dioxide air source heat pump defrosting system | |
| CN111623568A (en) | Refrigerating unit and control method thereof | |
| CN110940103A (en) | Constant temperature refrigerating system and storage and transportation equipment | |
| CN108800440B (en) | Air conditioner and control method thereof | |
| CN113701375A (en) | Frostless type refrigeration house and control method thereof | |
| CN113418247A (en) | Full fresh air dehumidifier and method for controlling evaporator load by dew point temperature | |
| CN112484190A (en) | Air conditioning system and control method thereof | |
| WO2023060882A1 (en) | Air conditioner | |
| CN111089395B (en) | Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner | |
| CN115218346A (en) | Heat storage defrosting control method and air conditioning unit | |
| CN114413416A (en) | Multi-split air conditioner defrosting control method, storage medium and multi-split air conditioner | |
| CN109595841A (en) | Air-conditioning system and its control method | |
| CN110411066B (en) | Oil cooling system of water chilling unit and control method thereof | |
| CN201327258Y (en) | Device capable of improving defrosting speed of air conditioning unit | |
| CN211876410U (en) | Air conditioner | |
| CN113776142A (en) | Heat pump type air conditioner refrigeration cycle system and control method thereof | |
| CN216114828U (en) | Outdoor side heat exchange mechanism of large capacity air conditioner | |
| CN1272593C (en) | Lithium brominate absorptive-type refrigerator with cryogen steam regulation and antifreeze device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |