CN2669069Y - Air conditioner for realizing flexible variable start - Google Patents
Air conditioner for realizing flexible variable start Download PDFInfo
- Publication number
- CN2669069Y CN2669069Y CNU2003201069641U CN200320106964U CN2669069Y CN 2669069 Y CN2669069 Y CN 2669069Y CN U2003201069641 U CNU2003201069641 U CN U2003201069641U CN 200320106964 U CN200320106964 U CN 200320106964U CN 2669069 Y CN2669069 Y CN 2669069Y
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- water
- inlet
- cooling
- temperature sensor
- cooling water
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Abstract
The utility model discloses an air conditioner for realizing flexible variable start. The freezing water inlet/outlet of the evaporator unit is provided with an inlet/outlet water temperature sensor and an inlet/outlet water pressure sensor. The cooling water inlet/outlet of the condenser unit is provided with an inlet/outlet water temperature sensor and an inlet/outlet water pressure sensor. Simultaneously, the cooling water inlet of the cooling water tower is provided with an inlet water temperature sensor. The air conditioner for realizing flexible variable start of the utility model realizes a leakage controlling between a refrigerating unit and a freezing water pump, a cooling water pump and a cooling tower, so that after the system is started, the operation energy controlling of the units is more reasonable and accurate to achieve the purpose of energy saving. Meanwhile, the load impact to the electrical network is reduced.
Description
Technical field
The utility model relates to a kind of air conditioner, regulates the air-conditioner of refrigeration unit power output according to temperature difference after starting and pressure differential specifically.
Background technology
In large-scale enterprises and institutions and market, adopt various air-conditioners comparatively at large at present.Use the environment of air-conditioner generally all to have a plurality of independent rooms that are provided with, the size and the house type in room also are not quite similar, and all need every day to open or close air-conditioner by Indoor Control Device.
Existing central air-conditioning unit generally is only to compare at leaving water temperature in the system pipeline and design temperature when starting, and adjusts the operation energy of refrigerator itself according to the difference of leaving water temperature.Be adjusted into segmented after said system starts, capacity regulating generally is divided into ranks such as 25-50%, 50-75%, 75-100%.Owing to the existing variable technology that starts realizes interlock control with whole unit equipment, thereby the segmented adjusting exists the energy consumption after bigger blindness, system start bigger.
Summary of the invention
The air-conditioner that the flexible variable of realization described in the utility model starts, be intended to address the above problem and deficiency, it is realized chilled water pump, cooling water pump and cooling tower and refrigeration unit interlock control, make the unit operation energy control after system starts more rationally accurate, thereby reach purpose of energy saving, reduce load impact simultaneously electrical network.
The air-conditioner that the flexible variable of realization described in the utility model starts, the chilled water entery and delivery port place at the evaporimeter unit is provided with the water-in and water-out temperature sensor, and the water-in and water-out pressure sensor;
Cooling water entery and delivery port place at the condenser unit is provided with the water-in and water-out temperature sensor, and the water-in and water-out pressure sensor.
Simultaneously, the cooling water intake place at cooling tower is provided with the inflow temperature sensor.
After system starts, by chilled water temperature sensor groups, chilled water pressure sensor groups, cooling-water temperature sensor group and cooling water pressure sensor groups, will detect numerical value respectively and send the MCU master chip to, thus the temperature difference of calculating, pressure difference value.
Be responsible for controlling the operation energy of chilled water pump, cooling water pump and blower fan of cooling tower by the MCU master chip, earlier with specified minimum operation frequency operation.
Then, control step by step the operation energy that improves, regulates refrigeration unit according to the difference result, the cooling water outlet and inlet in making refrigeration unit has the suitable temperature difference.
The air-conditioner that the flexible variable of realization described in the utility model starts, can be respectively after system starts regulate refrigeration unit and between the 25-100% frequency, carry out the continous way adjusting according to the difference value of leaving water temperature, pressure of inspiration(Pi) value and the setting value of chilled water and cooling water, rather than segmented regulates, with realize fast, the cooling activation mode of hoisting power by a small margin.
Therefore, the air-conditioner that the flexible variable of aforesaid realization starts has the following advantages and beneficial effect:
1, said structure can make air-conditioning system after startup, and the unit operation FREQUENCY CONTROL is more accurate, thereby reaches energy saving purposes;
2, owing to adopt to start the back continous way and regulate, rather than segmented regulates, and therefore can effectively reduce when starting the load impact to electrical network.
Description of drawings
Fig. 1 is the evaporimeter set structure schematic diagram of air-conditioner described in the utility model;
Fig. 2 is a condenser set structure schematic diagram;
Fig. 3 is the air conditioner control system module diagram;
As shown in the figure, include evaporimeter unit A, the condenser B of Unit, chilled water pump 1, cooling water pump 2, cooling tower 3, chilled water inflow temperature sensor 11, chilled water leaving water temperature sensor 12, chilled water intake pressure sensor 13, chilled water discharge pressure sensor 14, cold in-water temperature sensor 21, cooling water leaving water temperature sensor 22, cooling water intake pressure sensor 23, cooling water discharge pressure sensor 24, blower fan of cooling tower 31.
The specific embodiment:
Embodiment 1, as Fig. 1-shown in Figure 2, and the air-conditioner that the flexible variable of realization described in the utility model starts, its refrigeration unit has realized the interlock control with chilled water pump 1, cooling water pump 2 and blower fan of cooling tower 31.
In the system pipeline that comprises evaporimeter unit A, be provided with chilled water inflow temperature sensor 11, chilled water intake pressure sensor 13 in the chilled water water inlet of evaporimeter unit A; Chilled water delivery port place at evaporimeter unit A is provided with chilled water leaving water temperature sensor 12, chilled water discharge pressure sensor 14.
As shown in Figure 3, after system starts, will send the MCU master chip to by the chilled water out temperature value that refrigeration unit transmits respectively by chilled water inflow temperature sensor 11 and chilled water leaving water temperature sensor 12, thereby calculate temperature difference numerical value; Simultaneously, will send the MCU master chip to by the chilled water inlet and outlet pressure value that refrigeration unit transmits respectively by chilled water intake pressure sensor 13 and chilled water discharge pressure sensor 14, thereby calculate pressure differential numerical value.
Move with specified minimum operation frequency earlier by MCU master chip control chilled water pump.Wherein, the minimum operation frequency can guarantee chilled water minimum pressure and minimum flow.
Then, the running frequency by the chilled water pump control device increases, regulates chilled water pump automatically according to the import and export of the chilled water in the refrigeration unit temperature difference, pressure differential step by step has the suitable temperature difference until the import and export that make the refrigeration unit chilled water.
As depicted in figs. 1 and 2, in the system pipeline that comprises the condenser B of Unit, be provided with cold in-water temperature sensor 21, cooling water intake pressure sensor 23 at the cooling water intake place of condenser B of Unit; Be provided with cooling water leaving water temperature sensor 22 at the cooling water outlet place of condenser B of Unit, cooling water discharge pressure sensor 24.
As shown in Figure 3, after system starts, will send the MCU master chip to by the cooling water outlet and inlet temperature value that refrigeration unit transmits respectively by cold in-water temperature sensor 21 and cooling water leaving water temperature sensor 22, thereby calculate temperature difference numerical value; Simultaneously, will send the MCU master chip to by the cooling water outlet and inlet force value that refrigeration unit transmits respectively by cooling water intake pressure sensor 23 and cooling water discharge pressure sensor 24, thereby calculate pressure differential numerical value.
Move with specified minimum operation frequency earlier by MCU master chip control cooling water pump.Wherein, the minimum operation frequency can guarantee cooling water minimum pressure and minimum flow.
Then, the running frequency by the cooling water pump control device increases, regulates cooling water pump step by step automatically according to the cooling water outlet and inlet temperature difference, the pressure differential in the refrigeration unit has the suitable temperature difference until the import and export that make the refrigeration unit cooling water.
Based on said structure, blower fan of cooling tower control also realizes the interlock control with refrigeration unit.As shown in Figures 2 and 3, after refrigeration unit starts operation, send detected cooling water inlet temperature value to the MCU master chip, judge whether to be higher than the temperature value of setting by the MCU master chip by the cooling-water temperature sensor group.
If be higher than design temperature, then the MCU master chip is controlled the PLC programmable logic controller (PLC), and then provides blower fan of cooling tower 31 enabling signals, is then controlled the operation of blower fan by the blower fan of cooling tower control module;
When detected cooling water inlet temperature was not higher than the temperature of setting, it was out of service then to control blower fan of cooling tower, thereby realized the interlock control to blower fan of cooling tower and refrigeration unit.
Claims (2)
1, a kind of air-conditioner of realizing that flexible variable starts includes indoor set and refrigeration unit, and it is characterized in that: the chilled water entery and delivery port place at the evaporimeter unit is provided with water-in and water-out temperature sensor and water-in and water-out pressure sensor; Cooling water entery and delivery port place at the condenser unit is provided with water-in and water-out temperature sensor and water-in and water-out pressure sensor.
2, the air-conditioner of the flexible variable startup of realization according to claim 1, it is characterized in that: the cooling water intake place at cooling tower is provided with the inflow temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201069641U CN2669069Y (en) | 2003-11-08 | 2003-11-08 | Air conditioner for realizing flexible variable start |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201069641U CN2669069Y (en) | 2003-11-08 | 2003-11-08 | Air conditioner for realizing flexible variable start |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669069Y true CN2669069Y (en) | 2005-01-05 |
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ID=34438646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201069641U Expired - Lifetime CN2669069Y (en) | 2003-11-08 | 2003-11-08 | Air conditioner for realizing flexible variable start |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669069Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003768A (en) * | 2010-11-02 | 2011-04-06 | 深圳达实智能股份有限公司 | Energy-saving control method and controller of central air conditioner |
| CN102705067A (en) * | 2012-05-17 | 2012-10-03 | 三一重机有限公司 | Coolant leakage preventing device, coolant leakage preventing device and engineering machinery cooling system |
| CN113739371A (en) * | 2021-08-31 | 2021-12-03 | 广州汇电云联互联网科技有限公司 | Central air-conditioning system based on cloud cooperation and control method thereof |
-
2003
- 2003-11-08 CN CNU2003201069641U patent/CN2669069Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003768A (en) * | 2010-11-02 | 2011-04-06 | 深圳达实智能股份有限公司 | Energy-saving control method and controller of central air conditioner |
| CN102705067A (en) * | 2012-05-17 | 2012-10-03 | 三一重机有限公司 | Coolant leakage preventing device, coolant leakage preventing device and engineering machinery cooling system |
| CN113739371A (en) * | 2021-08-31 | 2021-12-03 | 广州汇电云联互联网科技有限公司 | Central air-conditioning system based on cloud cooperation and control method thereof |
| CN113739371B (en) * | 2021-08-31 | 2023-03-07 | 广州汇电云联互联网科技有限公司 | Central air conditioning system based on cloud cooperation and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131108 Granted publication date: 20050105 |