CN210602351U - Condenser capable of improving supercooling degree, water chilling unit and air conditioner - Google Patents
Condenser capable of improving supercooling degree, water chilling unit and air conditioner Download PDFInfo
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- CN210602351U CN210602351U CN201921585017.2U CN201921585017U CN210602351U CN 210602351 U CN210602351 U CN 210602351U CN 201921585017 U CN201921585017 U CN 201921585017U CN 210602351 U CN210602351 U CN 210602351U
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Abstract
The utility model discloses a can improve condenser, cooling water set and air conditioner of super-cooled rate. Wherein, the condenser is internally provided with a condensing area and a supercooling area which are mutually independent; the condensation area is positioned above the supercooling area and used for converting gaseous refrigerants into liquid refrigerants, and the liquid refrigerants flow into the supercooling area; the supercooling zone is positioned at the bottom of the condenser and used for performing heat exchange with the liquid refrigerant by utilizing chilled water so as to reduce the temperature of the liquid refrigerant. The utility model discloses a set up the supercooling zone at the condenser, after gaseous state refrigerant converts the liquid refrigerant into, utilize the refrigerated water to intake and reduce the temperature of liquid refrigerant for the actual temperature of condenser export liquid reduces, and then improves the unit super-cooled rate, has simply improved the efficiency of unit refrigerating output and refrigeration host computer effectively.
Description
Technical Field
The utility model relates to a unit technical field particularly, relates to a can improve condenser, cooling water set and air conditioner of super-cooled rate.
Background
The air conditioning system is an important component of a building system, and accounts for a large proportion of the energy consumption and the electric quantity of the whole building system. The energy conservation of the air conditioning system has very important significance and effect on reducing the energy consumption of a building system, saving the electricity consumption and optimizing the national power structure. The air conditioner energy efficiency, especially the refrigeration energy efficiency, is improved, and the air conditioner has important significance for energy conservation and emission reduction.
At present, the energy efficiency of a refrigeration host is generally improved by improving the energy efficiency of a compressor, for example, the number of times of starting and stopping the compressor is reduced, the oil return condition of the compressor is improved, and the like, but the control method is generally complex.
Aiming at the problem of how to simply and effectively improve the energy efficiency of a refrigeration host in the prior art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a can improve condenser, cooling water set and air conditioner of super-cooled rate to solve the problem of how to simply promote the refrigeration host computer efficiency effectively among the prior art, utilize the refrigerated water to intake and promote the unit super-cooled rate, improve the refrigeration host computer efficiency.
In order to solve the technical problem, an embodiment of the present invention provides a condenser capable of increasing a supercooling degree, wherein a condensation area and a supercooling area which are independent of each other are arranged inside the condenser; the condensation area is positioned above the supercooling area and used for converting gaseous refrigerants into liquid refrigerants, and the liquid refrigerants flow into the supercooling area; the supercooling zone is positioned at the bottom of the condenser and used for performing heat exchange with the liquid refrigerant by utilizing chilled water so as to reduce the temperature of the liquid refrigerant.
Optionally, the condensation zone comprises: the first heat exchange tube, a cooling water inlet and a cooling water outlet.
Optionally, the subcooling zone comprises: the second heat exchange tube, a chilled water inlet and a chilled water outlet.
Optionally, a gaseous refrigerant inlet is arranged above the condensation zone, and a liquid refrigerant outlet is arranged below the supercooling zone.
The embodiment of the utility model provides a still provide a can improve cooling water set of super-cooled rate, include: the condenser described above.
Optionally, the water chilling unit further includes: the evaporator is connected with a chilled water inlet pipeline and a chilled water outlet pipeline; one end of the first pipeline is connected to the chilled water inlet pipeline, and the other end of the first pipeline is connected to the chilled water inlet of the supercooling zone and used for inputting chilled water into the supercooling zone; and one end of the second pipeline is connected to the chilled water outlet of the supercooling zone, and the other end of the second pipeline is connected to the chilled water outlet pipeline and used for outputting the chilled water subjected to heat exchange from the supercooling zone to the chilled water outlet pipeline.
Optionally, the water chilling unit further includes: and the three-way valve is arranged at the joint of the first pipeline and the chilled water inlet pipeline.
Optionally, the first pipeline with the resistance of refrigerated water inlet line equals or the resistance difference is in predetermineeing the within range, install first water pump on the refrigerated water inlet line, be used for simultaneously doing the first pipeline with the refrigerated water inlet line provides power.
Optionally, a second water pump is installed on the first pipeline and used for providing power for the first pipeline; and a third water pump is arranged on the chilled water inlet pipeline and used for providing power for the chilled water inlet pipeline.
The embodiment of the utility model provides a still provide an air conditioner that can improve super-cooled rate, include: the water chilling unit is provided.
Use the technical scheme of the utility model, through set up the supercooling zone at the condenser, after gaseous state refrigerant converts the liquid refrigerant into, utilize the refrigerated water to intake and reduce the temperature of liquid refrigerant for the actual temperature of condenser export liquid reduces, and then improves the unit super-cooled rate, has simply improved the efficiency of unit refrigerating output and refrigeration host computer effectively.
Drawings
FIG. 1 is a schematic structural diagram of a condenser capable of increasing supercooling degree according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram i of a chiller capable of increasing supercooling degree according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram ii of a chiller capable of increasing supercooling degree according to an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of a chiller capable of increasing supercooling degree according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the relationship between the supercooling degree and the unit energy efficiency provided by the embodiment of the present invention;
fig. 6 is a flowchart of a unit control method capable of increasing supercooling degree according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in 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.
The noun explains: the supercooling degree refers to the difference between the saturated liquid temperature corresponding to the condensing pressure and the actual temperature of the liquid at the outlet of the condenser. The liquid is a liquid refrigerant.
Fig. 1 is a schematic structural diagram of a condenser capable of improving a supercooling degree according to an embodiment of the present invention, as shown in fig. 1, a condensation area 11 and a supercooling area 12 (see two areas enclosed by a black frame in fig. 1) which are independent of each other are disposed inside a condenser 10, and the condensation area 11 and the supercooling area 12 are vertically disposed. A gaseous refrigerant inlet 13 is provided above the condensing region 11 to supply gaseous refrigerant to the condenser 10. A liquid refrigerant outlet 14 is provided below the supercooling section 12 to output the liquid refrigerant from the condenser 10.
The condensing region 11 is located above the supercooling region 12, and converts the gaseous refrigerant into a liquid refrigerant, and the liquid refrigerant flows into the supercooling region 12 due to the relative position of the condensing region and the supercooling region.
The supercooling region 12 is located at the bottom of the condenser 10, and is configured to perform heat exchange between chilled water and a liquid refrigerant, that is, perform supercooling cooling on the liquid refrigerant, so as to reduce the temperature of the liquid refrigerant.
After entering the condenser 10 from the gaseous refrigerant inlet 13, the gaseous refrigerant is cooled and liquefied after heat exchange in the condensation zone 11, and the condensed liquid refrigerant is further cooled in the supercooling zone 12 and then flows out from the liquid refrigerant outlet 14. Specifically, the condensing area 11 uses cooling water to liquefy gaseous refrigerant, and the supercooling area 12 uses chilled water to cool liquid refrigerant.
The condensation zone 11 comprises: a first heat exchange pipe 111, a cooling water inlet, and a cooling water outlet (not shown in the figure). The cooling water enters the first heat exchange tube 111 through the cooling water inlet, flows in the first heat exchange tube 111, exchanges heat with the gaseous refrigerant outside the first heat exchange tube 111, condenses and liquefies the gaseous refrigerant, and the liquid refrigerant flows into the supercooling zone 12 below. The cooling water after heat exchange flows out through the cooling water outlet.
The supercooling zone 12 includes: a second heat exchange pipe 121, a chilled water inlet, and a chilled water outlet (not shown). The chilled water enters the second heat exchange tube 121 through the chilled water inlet, flows in the second heat exchange tube 121, and exchanges heat with the liquid refrigerant outside the second heat exchange tube 121, and the temperature of the chilled water is low, so that the temperature of the liquid refrigerant can be further reduced. The chilled water after heat exchange flows out through the chilled water outlet.
The number of the heat exchange tubes in the condensing area 11 and the number of the heat exchange tubes in the subcooling area 12 can be set according to actual requirements, for example, the heat exchange tubes are laid according to the refrigerating capacity of a unit and the structure of a condenser.
In this embodiment, the chilled water is a medium used by the evaporator, and for the evaporator, the inlet temperature of the chilled water is generally 12 ℃, the outlet temperature of the chilled water is 7 ℃, and the chilled water is supplied to the tail end, so as to achieve the purpose of refrigeration. The inlet water temperature of cooling water used by a conventional condenser is generally higher, for example, 32 ℃, so that the chilled water passing through an supercooling zone further cools a liquid refrigerant, the supercooling degree can be greatly improved, and the unit energy efficiency can also be effectively improved.
This embodiment is through setting up the supercooling zone at the condenser, after gaseous state refrigerant converts liquid refrigerant into, utilizes the refrigerated water to intake and reduces the temperature of liquid refrigerant for the actual temperature of condenser export liquid reduces, and then improves the unit super-cooled rate, has simply improved the efficiency of unit refrigeration volume and refrigeration host computer effectively.
The embodiment of the utility model provides a still provide a can improve cooling water set of subcooling degree, including above-mentioned embodiment condenser 10. Referring to fig. 2, the water chilling unit includes, in addition to the condenser 10: evaporator 20, compressor 30, and throttle valve 40. A denotes cooling water inlet, B denotes cooling water outlet, and a dotted line denotes a refrigerant circulation circuit.
The cooling water set of this embodiment through set up the supercooling district at the condenser, after gaseous refrigerant converts the liquid refrigerant into, utilizes the refrigerated water to intake and reduces the temperature of liquid refrigerant for the actual temperature of condenser export liquid reduces, and then improves the unit super-cooled rate, has simply improved the efficiency of unit refrigeration capacity and refrigeration host computer effectively.
As shown in fig. 2, the evaporator 20 is connected to a chilled water inlet line 21 and a chilled water outlet line 22.
The water chilling unit further comprises:
a first pipe 50 having one end connected to the chilled water inlet pipe 21 and the other end connected to the chilled water inlet of the supercooling region 12, for inputting chilled water (where the temperature of the chilled water is 12 ℃) to the supercooling region 12;
one end of the second pipeline 60 is connected to the chilled water outlet of the supercooling zone 12, and the other end is connected to the chilled water outlet pipeline 22, and is used for outputting the chilled water after heat exchange from the supercooling zone 12 to the chilled water outlet pipeline 22.
The first pipeline and the second pipeline are used for realizing that chilled water inlet water on the evaporator side is transmitted to the supercooling zone of the condenser, so that the supercooling degree is improved by utilizing the chilled water inlet water, and then the chilled water after heat exchange is output.
The water chilling unit further comprises: and a three-way valve 70 installed at a connection of the first pipe 50 and the chilled water inlet pipe 21. When the three-way valve 70 is opened, the chilled water enters the evaporator 20 and the supercooling region 12 of the condenser 10 through two routes, specifically, the chilled water enters the evaporator 20 through the chilled water main line (i.e., the chilled water inlet line 21) and enters the supercooling region 12 through the chilled water branch line (i.e., the first line 50). Therefore, a branch of water flow is separated from the chilled water inlet pipeline of the evaporator by using the three-way valve, enters the supercooling region of the condenser and returns to the chilled water outlet pipeline, the chilled water is transmitted to the supercooling region of the condenser, and the purpose of improving the supercooling degree is achieved.
To ensure the delivery and flow of chilled water, in one embodiment, as shown in FIG. 3, the first line 50 has equal or similar resistance to the chilled water inlet line 21 (i.e., the difference in resistance is within an acceptable predetermined range). Specifically, the pipeline resistance comprises the on-way resistance and the local resistance of each part (such as a three-way valve, an elbow and the like), the on-way resistance is related to the length of the pipeline, and the local resistance can be obtained through calculation. Through calculation and reasonable design, the resistance of the first pipeline 50 is equal to or close to that of the chilled water inlet pipeline 21, and the phenomenon of hydraulic imbalance is avoided. Based on this, the first pipeline 50 and the chilled water inlet pipeline 21 can share one water pump, so that the structure is simple and energy-saving. Specifically, the chilled water inlet line 21 is provided with a first water pump 23 for powering the first line 50 and the chilled water inlet line 21 simultaneously.
In another embodiment, as shown in FIG. 4, two water pumps are used to power two circuits, respectively. Specifically, the first pipeline 50 is provided with a second water pump 51 for providing power for the first pipeline; the chilled water inlet line 21 is provided with a third water pump 24 for providing power to the chilled water inlet line 21. In this embodiment, the resistance between the first pipeline 50 and the chilled water inlet pipeline 21 is not designed, and the implementation is simple.
Taking R134a refrigerant, 5 ℃ evaporation temperature and 36 ℃ condensation temperature as examples, the relationship between the supercooling degree and the unit energy efficiency is shown in FIG. 5, and the unit energy efficiency is improved by about 1% when the supercooling degree is increased by one degree.
The embodiment of the utility model provides a still provide an air conditioner that can improve super-cooled rate, include: the water chilling unit of the above embodiment.
Based on above-mentioned each embodiment, the embodiment of the utility model provides a still provide a unit control method that can improve the supercooling degree, figure 6 is the embodiment of the utility model provides a can improve the flow chart of the unit control method of supercooling degree, as shown in figure 6, include:
s601, converting the gaseous refrigerant into a liquid refrigerant by using a condensation area of the condenser, and enabling the liquid refrigerant to flow into an supercooling area of the condenser.
S602, the chilled water is controlled to be input into the supercooling region, and heat exchange is carried out between the chilled water and the liquid refrigerant, so that the temperature of the liquid refrigerant is reduced.
The technical scheme of this embodiment through set up the supercooling district at the condenser, after gaseous refrigerant converts the liquid refrigerant into, utilizes the refrigerated water to intake and reduces the temperature of liquid refrigerant for the actual temperature of condenser export liquid reduces, and then improves the unit super-cooled rate, has simply improved the efficiency of unit refrigeration capacity and refrigeration host computer effectively.
Optionally, controlling the input of the chilled water to the supercooling zone in S602 includes: chilled water is introduced from a chilled water inlet line of the evaporator and is input to the subcooling region through a first line. The first pipeline is used for conveying the inlet chilled water on the evaporator side to the supercooling zone of the condenser, so that the inlet chilled water is used for improving the supercooling degree.
Optionally, the inputting of the chilled water to the subcooling zone through a first line comprises: under the power provided by the water pump, controlling the frozen water to be input into the supercooling region through a first pipeline; wherein, the water pump is installed on the refrigerated water inlet pipeline or on the first pipeline. The water pump is used for providing power, so that the chilled water can smoothly enter the supercooling zone through the first pipeline.
Optionally, the inputting of the chilled water to the subcooling zone through a first line comprises: and opening the three-way valve to control the chilled water to simultaneously enter the chilled water inlet pipeline and the first pipeline. A branch of water flow is separated from a chilled water inlet pipeline of the evaporator by using the three-way valve, enters a supercooling region of the condenser and returns to a chilled water outlet pipeline, so that chilled water is transmitted to the supercooling region of the condenser, and the aim of improving the supercooling degree is fulfilled.
Optionally, after the heat exchange is performed between the chilled water and the liquid refrigerant, the method may further include: and the chilled water after heat exchange is controlled to be transmitted to a chilled water outlet pipeline of the evaporator through a second pipeline. Thereby discharging the chilled water from the supercooling zone.
To sum up, the embodiment of the utility model provides an utilize the refrigerated water to intake and improve unit super-cooled rate, promoted the complete machine efficiency from system optimization design's angle.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A condenser is characterized in that a condensing area and a supercooling area which are independent of each other are arranged in the condenser;
the condensation area is positioned above the supercooling area and used for converting gaseous refrigerants into liquid refrigerants, and the liquid refrigerants flow into the supercooling area;
the supercooling zone is positioned at the bottom of the condenser and used for performing heat exchange with the liquid refrigerant by utilizing chilled water so as to reduce the temperature of the liquid refrigerant.
2. The condenser of claim 1, wherein the condensing zone comprises: the first heat exchange tube, a cooling water inlet and a cooling water outlet.
3. The condenser of claim 1, wherein the subcooling zone comprises: the second heat exchange tube, a chilled water inlet and a chilled water outlet.
4. The condenser as claimed in claim 1, wherein a gaseous refrigerant inlet is provided above the condensing zone, and a liquid refrigerant outlet is provided below the supercooling zone.
5. A chiller, comprising: the condenser of any one of claims 1 to 4.
6. The water chilling unit according to claim 5, further comprising:
the evaporator is connected with a chilled water inlet pipeline and a chilled water outlet pipeline;
one end of the first pipeline is connected to the chilled water inlet pipeline, and the other end of the first pipeline is connected to the chilled water inlet of the supercooling zone and used for inputting chilled water into the supercooling zone;
and one end of the second pipeline is connected to the chilled water outlet of the supercooling zone, and the other end of the second pipeline is connected to the chilled water outlet pipeline and used for outputting the chilled water subjected to heat exchange from the supercooling zone to the chilled water outlet pipeline.
7. The water chilling unit according to claim 6, further comprising: and the three-way valve is arranged at the joint of the first pipeline and the chilled water inlet pipeline.
8. The water chilling unit according to claim 6, wherein the resistance of the first pipeline is equal to the resistance of the chilled water inlet pipeline or the difference between the resistances is within a preset range, and a first water pump is installed on the chilled water inlet pipeline and used for providing power for the first pipeline and the chilled water inlet pipeline simultaneously.
9. The chiller according to claim 6,
the first pipeline is provided with a second water pump for providing power for the first pipeline;
and a third water pump is arranged on the chilled water inlet pipeline and used for providing power for the chilled water inlet pipeline.
10. An air conditioner, comprising: the water chilling unit of any one of claims 5 to 9.
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| CN201921585017.2U CN210602351U (en) | 2019-09-23 | 2019-09-23 | Condenser capable of improving supercooling degree, water chilling unit and air conditioner |
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| CN201921585017.2U CN210602351U (en) | 2019-09-23 | 2019-09-23 | Condenser capable of improving supercooling degree, water chilling unit and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542248A (en) * | 2019-09-23 | 2019-12-06 | 珠海格力电器股份有限公司 | Condenser capable of improving supercooling degree, water chilling unit, air conditioner and unit control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110542248A (en) * | 2019-09-23 | 2019-12-06 | 珠海格力电器股份有限公司 | Condenser capable of improving supercooling degree, water chilling unit, air conditioner and unit control method |
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