CN201621815U - Central air-conditioner billing controller based on flow and temperature difference detection - Google Patents
Central air-conditioner billing controller based on flow and temperature difference detection Download PDFInfo
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- CN201621815U CN201621815U CN2009203121572U CN200920312157U CN201621815U CN 201621815 U CN201621815 U CN 201621815U CN 2009203121572 U CN2009203121572 U CN 2009203121572U CN 200920312157 U CN200920312157 U CN 200920312157U CN 201621815 U CN201621815 U CN 201621815U
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Abstract
The utility model provides a central air-conditioner billing controller based on flow and temperature different detection, which is characterized by comprising a microprocessor, a billing control module, a first temperature sensor for detecting intake water temperature, a second temperature sensor for detecting return water temperature, a flow meter and an actuating mechanism for starting or closing the central air-conditioner, the billing control module, the first temperature sensor, the second temperature sensor and the flow meter are all connected with the microprocessor, and the microprocessor outputs control signals to the actuating mechanism. The central air-conditioner billing controller integrates billing with controlling, can calculate energy consumption of the air-conditioner according to temperature difference and flow of intake water and return water of the air-conditioner and then bill according to energy consumption, and is accurate in billing and easy to be implemented.
Description
Technical field
The utility model belongs to central air-conditioning and electronic technology field, relates to a kind of central air-conditioning charging controller based on flow and temperature difference detection.
Background technology
Along with the fast development of Chinese national economy, central air-conditioning is able to large-scale application, is one of problem that is always perplexing industry to the meterage of central air-conditioning.Not adopting measurement technology period, generally adopt the mode of sharing to charge abroad by area.To the seventies in 20th century, because the appearance of oil crisis, and along with the enhancing of people's awareness of saving energy, power-saving technology and equipment obtain fast development thereupon.In the process of promoting the heat metering technology, thereby purpose how to select metering method to reach energy-conservation and increase economic efficiency becomes the hot issue that central air-conditioning is charged.
It is longer that the time is used in cold and hot metering abroad, is the technology of comparative maturity; Though the simple and convenient and zero cost of the charging way of sharing out equally of domestic extensive use does not have accuracy, sheerly a kind of methodology of simple arithmetic average can not satisfy the user to the rational demand of chargeing.Under this situation, domestic hot and cold measurement technology has been subjected to paying attention to widely.The HVAC expert has proposed a series of meterage methodology in the industry, and is used in the central air-conditioning charge system.So far, these meterage methods all exist defective more or less, all fail thoroughly to solve the problem of air-conditioning meterage " reasonability ".
In recent years, the central air-conditioning measurement technology has obtained certain development, more generally adopts following dual mode at present:
(1) energy type charging method:
A temperature sensor respectively is installed on user's confession, the water return pipeline, and on water return pipeline, a flowmeter is installed.Measure the size of chilled water (or hot water) flow with flowmeter, again in conjunction with the loss of supplying water, the temperature difference of backwater is come together calculating energy, simultaneously temperature signal and flow signal are inserted the energy integrating instrument, and charge, this charging method has taken into full account the user to the actual consumption of air-conditioning cold flow, measuring accuracy height in theory, but has the problem of the difficulty of checking meter, as adopting the networking then wiring of checking meter complicated, difficulty of construction is big, and the system maintenance work amount is big.Because user's air-conditioning system is not had control device, often there is the situation of user's malicious owing fee, make troubles for manager's regular fee and management.
(2) " time equivalent type " charging method:
The temperature controller of fan coil, the control signal wire of electric two-way valve are all inserted collector, detect the enabling signal and fan coil gear signal of electric two-way valve when collector after, the host computer system begins to charge.Data acquisition unit is with certain cycle taking turn image data, computer system is carried out analyzing and processing with the data that collect, with each range state time accumulative total, convert fiducial time to by given coefficient, tabulate statistics is isolated user service time, according to the price of appraising and deciding in advance, charge (when the fan coil model is different, in the host computer monitoring system, using the coefficient correction).This programme be " time equivalent type " and charging method, more reasonable relatively.But system is complicated, equipment is more, comprise time integrator, zone manager, charging main frame, ups power etc., and it is very complicated to connect up, need adopt the mode of net connection to receive computer all equipment, difficulty of construction be big, the construction costs height, the plant maintenance amount is big, is unfavorable for large-scale promotion.And also there is underground, the transparent problem of chargeing in this programme, and the user can not get information about the situation that oneself consumes energy, and often has the charge dispute.
The utility model content
It is difficult at the control of chargeing of existing central air-conditioning that the utility model is wanted the technical solution problem, and the problem such as inaccurate of chargeing, and a kind of central air-conditioning charging controller that detects based on flow and the temperature difference is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of central air-conditioning charging controller based on flow and temperature difference detection, it is characterized in that, comprise microprocessor, charging control module, be used to detect inflow temperature first temperature sensor, be used to detect second temperature sensor, the flowmeter of return water temperature and be used to start or close the executing agency of central air-conditioning, communication module; Described charging control module, first temperature sensor, second temperature sensor and flowmeter all are connected with described microprocessor; Described microprocessor outputs a control signal to executing agency.
Described executing agency is electrically operated valve or central air-conditioning circuit controling switch.[the central air-conditioning circuit controling switch is used for opening or disconnecting the central air-conditioning power supply, thereby starts or stops cooling or heating.】
Described charging control module is the IC-card taximeter, and the IC-card taximeter adopts contact or radio frequency receive mode to communicate by letter with IC-card.
This charging controller also comprises the communication module that is used for group-net communication, but described communication module networking communication uploads to host computer with continuous data.
Described a kind of central air-conditioning charging controller based on flow and temperature difference detection also comprises chargeing encrypts memory module, and described charging is encrypted memory module and is connected with described microprocessor.
Described a kind of central air-conditioning charging controller based on flow and temperature difference detection also comprises display, and this display connects described microprocessor.
This charging is encrypted memory module and is used for accumulative total discharge and advances the return water temperature difference and in addition computing and encrypt the storage metering data.
Authorization: adopt keeper's card or the mandate of management computer
Its course of work is: have the data of energy value in the IC-card, IC-card is connected with microprocessor communication by the IC-card taximeter.When air-conditioning is opened, microprocessor perceives the difference variation of temperature by first temperature sensor and second temperature sensor, variation by flowmeter perception discharge, thereby start the control of chargeing, promptly calculate air-conditioning and open the energy that the back is consumed, and energy that consumes and expense there are corresponding relation, therefore, microprocessor promptly reaches the purpose of accurate charging according to the energy value data on the air-conditioning system consumed energy value renewal IC-card controller.Controller is turned off electrically operated valve or air-conditioning system circuit controling switch automatically by microprocessor when the residual energy value is 0, stops cold or heat supply.
The beneficial effect of utility model:
This device collection charges and the control one, can charge according to energy consumption according to the water inlet of air-conditioning and the energy consumption of return water temperature difference and flow rate calculation air-conditioning again, charges accurately, and is easy to implement.This central air-conditioning charging controller based on flow and temperature difference detection has following clear superiority:
1, this controller is easy to realize reasonable price.Integrate control and charge.
2, installation is simple and convenient.No network layout and data transmission set.
3, charging is just, fair and open, has only when intake backwater generation temperature difference and flowmeter collect data on flows just to begin to charge; The user can inquire about the usefulness energy situation of oneself at any time, does not have any charge dispute.
4, modern charging mode " post-pay paystation, back cooling ".The customer consumption cold adopts the IC-card clearing, the cold of buying certain amount of money earlier is transferred in the central air-conditioning charging controller of IC-card based on flow and temperature difference detection by the IC radio-frequency card, controller is turned off electrically operated valve or air-conditioning system circuit controling switch automatically when remaining sum is 0, stops cold or heat supply.The user buys card earlier, back energy supply.
5, high reliability.This controller does not have rotatable parts, and whole measuring transducers and temperature control controller are integrated in the box, need not data communication, has very high reliability.
6, antitheft cold.Since this controller with flow detection,, temperature difference detection, CPU, relay etc. all metering units concentrate in the box, cooling-water temperature sensor directly is inserted in the waterpipe, and adopts special-purpose lead sealing locking, can prevent to steal cold effectively, has protected user benefit.
7, this device can be with communication interface, can gather energy consumption data by data wire.
8, outward appearance novelty, operation facility.Adopt liquid crystal panel, touch-key is attractive in appearance, generous.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the structured flowchart of embodiment 1.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1:
As illustrated in fig. 1 and 2, a kind of central air-conditioning charging controller based on flow and temperature difference detection, it is characterized in that, comprise microprocessor, charging control module, be used to detect inflow temperature first temperature sensor, be used to detect second temperature sensor, the flowmeter of return water temperature and be used to start or close the executing agency of central air-conditioning; Communication module.Described charging control module, first temperature sensor, second temperature sensor and flowmeter all are connected with described microprocessor; Described microprocessor outputs a control signal to executing agency.
Described executing agency is electrically operated valve or central air-conditioning circuit controling switch.
Described charging control module is the IC-card taximeter, and the IC-card taximeter adopts contact or radio frequency receive mode to communicate by letter with IC-card.
Described a kind of central air-conditioning charging controller based on flow and temperature difference detection also comprises chargeing encrypts memory module, and described charging is encrypted memory module and is connected with described microprocessor.
Described a kind of central air-conditioning charging controller based on flow and temperature difference detection also comprises display, and this display connects described microprocessor.
This charging is encrypted memory module and is used for accumulative total discharge and advances the return water temperature difference and in addition computing and encrypt the storage metering data.
The technical parameter of this device
1, precision: 0.1%;
2, design temperature: 15 ℃～30 ℃;
3, load: 1A, 220VAC;
4, working environment: 0 ℃～45 ℃ of temperature, humidity 0～90%;
5, preserve environment: temperature-20 ℃～70 ℃, humidity 0～90%.
Control mode of this device and toll project:
1, control mode
IC-card is IC-card to be chargeed combine with central air conditioner system control based on the central air-conditioning charging controller of flow and temperature difference detection, after IC-card is supplemented with money based on the central air-conditioning charging controller of flow and temperature difference detection, corresponding air-conditioning system equipment can be enabled, can select for use independent electrically operated valve to accept the instruction of controller and the start and stop water system, circuit controller control central air-conditioning contactor or both are used simultaneously and control separately, when expense is zero, the pipe-line system of charged movable valve makes electrically operated valve close, and the air-conditioning system electric power of charged movable valve does not disconnect.
2, charge algorithm
A, user buy cold: (unit/KW) supplement with money supplements with money and shows cold reading value (KW) in the IC-card of back and be kept in the IC-card by the cold unit price.As 0.4 yuan/KW of cold unit price, show cold 250KW in the IC-card after supplementing 100 yuan with money.
B, supplement with money to the charging controller: by " menu-supplement with money " key of control panel, the IC-card after supplementing with money is close to the control panel of charging controller, display screen shows " successful recharging ", and after glimmering three seconds, shows and supplement cold with money.
C, authorize open-minded: every charging controller need by keeper's card (or by managing computer mandate) open an account and authorize after could use, there is not to authorize the system that opens to be in normally closed state, electrically operated valve and contactor all can not be opened, and display floater shows lock icon; Every charging controller has unique encoding, and control panel and charging controller are corresponding, can not arbitrarily change; By " menu-inquiry " key of control panel, can show the residue remaining sum after opening an account.
D, charging way: air-conditioning system is advanced water return pipeline and is produced the temperature difference, and flow produces in respect of flow, just effectively charges.Microprocessor is measured in real time to the leaving water temperature T1 in the air-conditioning heat-exchange system, inflow temperature T2 and instantaneous delivery q, and according to thermodynamics energy computing formula, the device that the cold or the calorie value of system consumption calculated.As T1 during, cold is carried out integrating, and heat is carried out integrating during less than T2 as T1, and cold and heat are preserved greater than T2.Computing formula is as follows: (energy consumption that the Q representative is total)
In the formula:
The heat (J or wh) that Q-discharges or absorbs;
The flow through mass flow (kg/h) of water of calorimeter of qm-;
The flow through volume flow (m3/h) of water of calorimeter of qv-;
The density (kg/m3) of the water of the ρ-calorimeter of flowing through;
Δ h-under the entrance and exit temperature of heat-exchange system, the enthalpy of water poor (J/kg);
The t-time (h).T0 and t1 represent the zero-time and the termination time of primary charging respectively.
E, charging controller are gathered a secondary data automatically every 5 seconds, and calculate automatically and the result is stored in the taximeter, are not produce discharge in zero or the water system as water inlet return water temperature difference, and then automatic screening is invalid operation, does not charge.
F, can show " Sorry, your ticket has not enough value ", when remaining cold is zero, closes electrically operated valve or air-condition circuits switch and disconnect, stop energy supply to system when the charging controller shows when the amount of money is lower than 20KW.
G, lead sealing: the charging controller is directly to be connected on the water-system pipeline, and screw terminal is in the controller the inside, and the back that carefully connects the wire adopts lead sealing to block.Cooling-water temperature sensor directly is connected on the water pipe, installs the back and adopts lead sealing to block.
3, system management
The central air-conditioning meterage is made up of five parts altogether.
(1), keeper's card (then cancelling keeper's card) as adopting the mandate of management computer
Keeper's card information is provided with: keeper's IC-card is write the control mode (electrically operated valve control mode, contactor control mode, mixed-control mode) that air-conditioning system adopts in the corresponding card, and every keeper blocks corresponding one type meter for air conditioner equipment.
Can apply for opening an account when user installation is finished the air conditioning charging controller, the keeper holds the keeper and tightens the controller that pastes the user, and by " menu-supplement with money " key, display screen shows " success " three seconds, the disposable controller that reads in of corresponding data.
(2), IC control card
Function: buy energy
For the terminal charging controller of central air-conditioning is supplemented with money
Characteristics: adopt the CPU card
Data encryption height (3DES encryption)
Long service life.
(3), write the card device
Determine a certain cold numerical value Q, user's amount payable Y.Cold numerical value Q writes IC-card with writing the card device.
The corresponding a certain Q that counts, calculate user's amount payable and can carry out according to the following steps:
Input cold numerical value Q;
Input cold unit price D (unit/KW);
Calculate user's amount payable: Y=Q * D
(5), accounting management software
Function: generate subscriber card, keeper's card
For subscriber card is supplemented with money.
Characteristics: be used for the above edition data encryption of WINDOWS98 height (3DES encryption).Can detect database, error correction is arranged; Can add up recharge amount automatically.
Claims (4)
1. central air-conditioning charging controller that detects based on flow and the temperature difference, it is characterized in that, comprise microprocessor, charging control module, be used to detect inflow temperature first temperature sensor, be used to detect second temperature sensor, the flowmeter of return water temperature and be used to start or close the executing agency of central air-conditioning; Described charging control module, first temperature sensor, second temperature sensor and flowmeter all are connected with described microprocessor; Described microprocessor outputs a control signal to executing agency.
2. the central air-conditioning charging controller based on flow and temperature difference detection according to claim 1 is characterized in that described executing agency is electrically operated valve or central air-conditioning circuit controling switch.
3. the central air-conditioning charging controller based on flow and temperature difference detection according to claim 1 is characterized in that described charging control module is the IC-card taximeter, and the IC-card taximeter adopts contact or radio frequency receive mode to communicate by letter with IC-card.
4. the central air-conditioning charging controller based on flow and temperature difference detection according to claim 1 is characterized in that also comprise the communication module that is used for group-net communication, described communication module is connected with described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203121572U CN201621815U (en) | 2009-10-09 | 2009-10-09 | Central air-conditioner billing controller based on flow and temperature difference detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203121572U CN201621815U (en) | 2009-10-09 | 2009-10-09 | Central air-conditioner billing controller based on flow and temperature difference detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621815U true CN201621815U (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203121572U Expired - Fee Related CN201621815U (en) | 2009-10-09 | 2009-10-09 | Central air-conditioner billing controller based on flow and temperature difference detection |
Country Status (1)
| Country | Link |
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| CN (1) | CN201621815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388877A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Central air conditioner billing system provided with energy billing meter |
| CN112330885A (en) * | 2020-10-09 | 2021-02-05 | 广东美的暖通设备有限公司 | Central air conditioner charging method, system, charging management equipment and storage medium |
-
2009
- 2009-10-09 CN CN2009203121572U patent/CN201621815U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388877A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Central air conditioner billing system provided with energy billing meter |
| CN112330885A (en) * | 2020-10-09 | 2021-02-05 | 广东美的暖通设备有限公司 | Central air conditioner charging method, system, charging management equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20181009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |