CN214172596U - Multi-refrigerant loop refrigerating system and air conditioning equipment - Google Patents
Multi-refrigerant loop refrigerating system and air conditioning equipment Download PDFInfo
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- CN214172596U CN214172596U CN202022839711.1U CN202022839711U CN214172596U CN 214172596 U CN214172596 U CN 214172596U CN 202022839711 U CN202022839711 U CN 202022839711U CN 214172596 U CN214172596 U CN 214172596U
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 27
- 238000004378 air conditioning Methods 0.000 title claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims abstract description 21
- 238000005057 refrigeration Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000001704 evaporation Methods 0.000 abstract description 12
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a many refrigerant return circuits refrigerating system and air conditioning equipment relates to cooling water set technical field, and the condenser and the evaporimeter that have solved existence among the prior art all adopt the axial arrangement mode, and the evaporating temperature that causes each system is close with condensing temperature ratio, leads to the refrigerating capacity of unit poor and cause the technical problem that the unit is not compact. The multi-refrigerant-loop refrigerating system comprises a compressor, a condenser and evaporators which are located in the same shell, at least two groups of compressors are arranged, the compressors are communicated with the condensers, the condensers are communicated with the evaporators, the evaporators are communicated with the compressors, all the condensers are arranged in parallel along the radial direction of the condensers, and all the evaporators are arranged in parallel along the radial direction of the evaporators. The utility model is used for optimize compressor operating mode, promote the refrigerating output of complete machine.
Description
Technical Field
The utility model belongs to the technical field of the cooling water set technique and specifically relates to a many refrigerant return circuits refrigerating system and air conditioning equipment are related to.
Background
The water chilling unit has a larger and larger share in the air conditioning market with higher comfort, and is popularized and applied in a large amount in the coal reducing and changing project promoted by the current government.
45% -50% of electric energy of a building in summer is used for air conditioning refrigeration, wherein the energy consumption of a water chilling unit accounts for more than 40% of the energy consumption of the air conditioner, and the energy conservation of the water chilling unit is a very important energy-saving aspect. For an air conditioning system with an independent refrigerating system, the energy efficiency of the unit is improved on the basis of not increasing the cost, and the key for improving the performance is to save electric energy.
The water chilling unit is an important central air conditioning type and is widely applied to engineering due to high reliability and wide operation range. Along with the continuous increase of engineering refrigerating output, the unit needs to be increased more and is limited by the limits of compressor discharge capacity and volume price, a single compressor with large refrigerating output is expensive, and the backup cost is high, so that the parallel connection of a plurality of compressors becomes an important mode of expanding the refrigerating output range of the screw water-cooling water chilling unit.
The refrigerant sides of the multiple refrigeration systems operate independently, one refrigeration system goes wrong, the other refrigeration system can still operate normally, the normal operation of the air-conditioning system is ensured, and the reliability of the whole refrigeration system is improved. The general solution is to employ a condenser evaporator arranged in series along the axial direction.
The applicant has found that the prior art has at least the following technical problems:
the existing axial arrangement mode of the condenser evaporator causes that the evaporation temperature and the condensation temperature of each system are relatively similar, so that the refrigerating capacity of the unit is poor, and the unit is not compact due to too long length.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a many refrigerant return circuits refrigerating system and air conditioning equipment to the condenser and the evaporimeter that exist among the solution prior art all adopt the axial arrangement mode, cause the evaporating temperature of each system and be close with condensing temperature ratio, lead to the refrigerating capacity of unit poor and cause the technical problem that the unit is not compact. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a many refrigerant return circuits refrigerating system, including compressor, condenser and the evaporimeter that is located same casing, and be two sets of at least, the compressor with the condenser intercommunication, the condenser with the evaporimeter intercommunication, the evaporimeter with the compressor intercommunication, all the condenser is followed the radial direction of condenser arranges side by side, all the evaporimeter is followed the radial direction of evaporimeter arranges side by side.
Preferably, the compressor, the condenser and the evaporator are divided into three groups of refrigeration systems, namely a first group of refrigeration system, a second group of refrigeration system and a third group of refrigeration system.
Preferably, the first group of refrigeration systems comprises a first compressor, a first condenser and a first evaporator, wherein an outlet of the first evaporator is communicated with a suction port of the first compressor, a discharge port of the first compressor is communicated with an inlet of the first condenser, and an outlet of the first condenser is communicated with an inlet of the first evaporator through a throttling mechanism.
Preferably, the second group of refrigeration systems comprises a first compressor, a second condenser and a second evaporator, wherein an outlet of the second evaporator is communicated with a suction port of the second compressor, a discharge port of the second compressor is communicated with an inlet of the second condenser, and an outlet of the second condenser is communicated with an inlet of the second evaporator through a throttling mechanism.
Preferably, the third refrigeration system set comprises a third compressor, a third condenser and a third evaporator, an outlet of the third evaporator is communicated with a suction port of the third compressor, a discharge port of the third compressor is communicated with an inlet of the third condenser, and an outlet of the third condenser is communicated with an inlet of the third evaporator through a throttling mechanism.
Preferably, the throttle mechanism is an electronic expansion valve.
Preferably, the first condenser, the second condenser and the third condenser are arranged in parallel in the horizontal direction in the housing, and the first evaporator, the second evaporator and the third evaporator are arranged in parallel in the horizontal direction in the housing.
Preferably, the evaporator and the condenser are both shell-and-tube heat exchangers.
Preferably, the cooling water inlet end of the first condenser, the cooling water outlet end of the third condenser, the chilled water inlet end of the third evaporator and the chilled water outlet end of the first evaporator are all provided with temperature sensors.
An air conditioning device comprises the multi-refrigerant loop refrigerating system.
The utility model provides a many refrigerant return circuits refrigerating system, including being located the compressor in same casing, condenser and evaporimeter, and be two sets of at least, compressor and condenser intercommunication, condenser and evaporimeter intercommunication, evaporimeter and compressor intercommunication, all condensers arrange side by side along the radial direction of condenser, and all evaporators arrange side by side along the radial direction of evaporimeter, the utility model discloses a structural design has optimized the refrigerating system evaporimeter, the arrangement of condenser, and rational utilization unit casing space is under the same refrigerated water, cooling water working condition of intaking, guaranteeing that the evaporating temperature of a refrigerating system, under the unchangeable condition of condensing temperature, improving all the other refrigerating system's evaporating temperature, thereby the operating mode of compressor has been optimized to the reduction condensing temperature, promotes the performance of complete machine. In addition, under the condition that the cost is almost unchanged, the refrigerating capacity and the performance coefficient of the unit can be obviously improved, so that the energy is saved, and the cost is indirectly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-refrigerant-loop refrigeration system according to an embodiment of the present invention.
Reference numerals: 1. a first condenser; 2. a first compressor; 3. a first evaporator; 4. a second condenser; 5. a second compressor; 6. a second evaporator; 7. a third condenser; 8. a third compressor; 9. a third evaporator; 10. a throttle mechanism; 11. a cooling water inlet end; 12. a cooling water outlet end; 13. a chilled water inlet end; 14. and (5) discharging the chilled water from the water outlet end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a many refrigerants return circuits refrigerating system, including compressor, condenser and the evaporimeter that is located same casing, and be two sets of at least, compressor and condenser intercommunication, condenser and evaporimeter intercommunication, evaporimeter and compressor intercommunication, all condensers arrange side by side along the radial direction of condenser, and all evaporimeters arrange side by side along the radial direction of evaporimeter. The utility model discloses a structural design has optimized the arrangement of refrigerating system evaporimeter, condenser, and rational utilization unit casing inner space is under the same refrigerated water, the cooling water operating mode of intaking, under the unchangeable condition of evaporating temperature, the condensation temperature of guaranteeing a refrigerating system, thereby improves all the other refrigerating system's evaporating temperature, reduces the operating mode that the compressor was optimized to condensation temperature, promotes the performance of complete machine. In addition, under the condition that the cost is almost unchanged, the refrigerating capacity and the performance coefficient of the unit can be obviously improved, so that the energy is saved, and the cost is indirectly reduced.
The quantity of compressor, condenser and evaporimeter all communicates with each other, does the utility model discloses the optional embodiment of embodiment, and the number of compressor, condenser and evaporimeter in this embodiment divide into three refrigerating system of group, as shown in fig. 1, is first refrigerating system of group, the refrigerating system of second group and the refrigerating system of third group respectively, and of course, the quantity of compressor, the quantity of condenser and the quantity of evaporimeter do not do the restriction here, as long as three quantity is the same, independent refrigerating system is constituteed to every compressor, evaporimeter and condenser.
The first group of refrigeration systems in this embodiment includes a first compressor 2, a first condenser 1, and a first evaporator 3, an outlet of the first evaporator 3 is communicated with a suction port of the first compressor 2, an exhaust port of the first compressor 2 is communicated with an inlet of the first condenser 1, and an outlet of the first condenser 1 is communicated with an inlet of the first evaporator 3 through a throttle mechanism 10. The second group of refrigeration systems comprises a first compressor 2, a second condenser 4 and a second evaporator 6, wherein the outlet of the second evaporator 6 is communicated with the suction port of the second compressor 5, the exhaust port of the second compressor 5 is communicated with the inlet of the second condenser 4, and the outlet of the second condenser 4 is communicated with the inlet of the second evaporator 6 through a throttling mechanism 10. The third group of refrigeration systems comprises a third compressor 8, a third condenser 7 and a third evaporator 9, wherein an outlet of the third evaporator 9 is communicated with an air suction port of the third compressor 8, an air outlet of the third compressor 8 is communicated with an inlet of the third condenser 7, and an outlet of the third condenser 7 is communicated with an inlet of the third evaporator 9 through a throttling mechanism 10. Further, the throttle mechanism 10 in the present embodiment may employ an electronic expansion valve.
The evaporator and the condenser in this embodiment are both shell-and-tube heat exchangers. The first condenser 1, the second condenser 4, and the third condenser 7 are arranged in parallel in the horizontal direction in the casing, and the first evaporator 3, the second evaporator 6, and the third evaporator 9 are arranged in parallel in the horizontal direction in the casing.
The utility model provides a many refrigerant return circuits refrigerating system is guaranteeing the unit in the unchangeable condition of hardware configuration, and the pipeline through optimizing the condenser is arranged and the pipeline of evaporimeter is arranged, under the same refrigerated water, the cooling water operating mode of intaking, under the unchangeable condition of evaporating temperature, the condensation temperature of guaranteeing a system, improves the evaporating temperature of several other systems, reduces the condensation temperature to optimize the operating mode of compressor, promote the performance of complete machine. The optimized arrangement structure can obviously improve the refrigerating capacity and the performance coefficient of the water chilling unit under the condition that the cost is almost unchanged.
Temperature sensors are arranged at a cooling water inlet end 11 of the first condenser 1, a cooling water outlet end 12 of the third condenser 7, a chilled water inlet end 13 of the third evaporator 9 and a chilled water outlet end 14 of the first evaporator 3. The measured temperature of the cooling water inlet end 11 of the first condenser 1 is T1, the measured temperature of the cooling water outlet end 12 of the third condenser 7 is T2, the measured temperature of the chilled water inlet end 13 of the third evaporator 9 is T3, and the measured temperature of the chilled water outlet end 14 of the first evaporator 3 is T4.
As shown in fig. 1, the arrangement of the condenser of the system ensures that when the temperature of the inlet and outlet chilled water is not changed, the inlet temperature of the cooling water is T1, and the outlet temperature of the cooling water is T2(T2> T1), the working condition water temperature of the first group of refrigeration systems is (T1/2+ T2/4); according to the traditional axial arrangement, the working condition water temperature of the cooling water of the first group of refrigerating systems is (T1/2+ T2/2), obviously (T1/2+ T2/4) < (T1/2+ T2/2), so that the condensing temperature of the first group of refrigerating systems is lower under the condition of ensuring that the heat exchange temperature difference delta Ta is not changed, (T1/2+ T2/4) + delta Ta < (T1/2+ T2/2) + delta Ta. The lower the condensation temperature in the steam refrigerating system, the larger the refrigerating capacity of the unit, and the higher the performance coefficient of the unit, thereby improving the refrigerating capacity and performance.
Similarly, when the temperature of the inlet and outlet water of the cooling water is not changed, and when the temperature of the inlet freezing water is T3 and the temperature of the outlet cooling water is T4(T3 is less than T4), the temperature of the cold water in the first group of refrigeration systems is (T3/2+3T 4/4). The operating water temperature of the first group of refrigeration systems arranged axially according to the traditional method is (T3/2+ T4/2), and obviously (T3/2+3T4/4) > (T3/2+ T4/2). Thus, under the condition of ensuring that the heat exchange temperature difference delta Tb is not changed, (T3/2+3T4/4) + delta Tb > (T3/2+ T4/2) + delta Tb, the evaporation temperature of the first group of refrigeration systems in the embodiment has higher evaporation temperature. The higher the evaporation temperature in the steam refrigerating system is, the larger the refrigerating capacity of the unit is, the higher the performance coefficient of the unit is, the refrigerating capacity and performance are improved again, and the refrigerating capacity and performance of the unit are improved through the double functions of the condenser and the evaporator.
Furthermore, the utility model also provides an air conditioning equipment, including foretell many refrigerant return circuits refrigerating system.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The multi-refrigerant-loop refrigerating system is characterized by comprising at least two groups of compressors, condensers and evaporators which are positioned in the same shell, wherein the compressors are communicated with the condensers, the condensers are communicated with the evaporators, the evaporators are communicated with the compressors, all the condensers are arranged in parallel along the radial direction of the condensers, and all the evaporators are arranged in parallel along the radial direction of the evaporators.
2. The multi-refrigerant circuit refrigeration system as claimed in claim 1, wherein the compressor, the condenser and the evaporator are divided into three groups of refrigeration systems, namely a first group of refrigeration system, a second group of refrigeration system and a third group of refrigeration system.
3. The refrigerant circuit refrigerant system as set forth in claim 2, wherein said first group refrigerant system includes a first compressor, a first condenser and a first evaporator, an outlet of said first evaporator is connected to a suction port of said first compressor, a discharge port of said first compressor is connected to an inlet of said first condenser, and an outlet of said first condenser is connected to an inlet of said first evaporator through a throttle mechanism.
4. The refrigerant circuit refrigerant system as set forth in claim 3, wherein said second group refrigerant system includes a second compressor, a second condenser and a second evaporator, an outlet of said second evaporator is connected to a suction port of said second compressor, a discharge port of said second compressor is connected to an inlet of said second condenser, and an outlet of said second condenser is connected to an inlet of said second evaporator through a throttle mechanism.
5. The multi-refrigerant circuit refrigeration system as claimed in claim 4, wherein the third refrigeration system group comprises a third compressor, a third condenser and a third evaporator, an outlet of the third evaporator is communicated with a suction port of the third compressor, a discharge port of the third compressor is communicated with an inlet of the third condenser, and an outlet of the third condenser is communicated with an inlet of the third evaporator through a throttling mechanism.
6. The refrigerant circuit refrigerant system as set forth in claim 5, wherein said throttling mechanism is an electronic expansion valve.
7. The refrigerant circuit refrigerant system as set forth in claim 5, wherein said first condenser, said second condenser and said third condenser are arranged in parallel in a horizontal direction within said housing, and said first evaporator, said second evaporator and said third evaporator are arranged in parallel in a horizontal direction within said housing.
8. The multi-refrigerant circuit refrigerant system as in claim 1, wherein the evaporator and the condenser are both shell and tube heat exchangers.
9. The multi-refrigerant loop refrigeration system as claimed in claim 5, wherein the cooling water inlet end of the first condenser, the cooling water outlet end of the third condenser, the chilled water inlet end of the third evaporator and the chilled water outlet end of the first evaporator are all provided with temperature sensors.
10. An air conditioning apparatus comprising the multi-refrigerant-circuit refrigeration system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022839711.1U CN214172596U (en) | 2020-11-30 | 2020-11-30 | Multi-refrigerant loop refrigerating system and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022839711.1U CN214172596U (en) | 2020-11-30 | 2020-11-30 | Multi-refrigerant loop refrigerating system and air conditioning equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214172596U true CN214172596U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022839711.1U Active CN214172596U (en) | 2020-11-30 | 2020-11-30 | Multi-refrigerant loop refrigerating system and air conditioning equipment |
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| Country | Link |
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| CN (1) | CN214172596U (en) |
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