CN202485112U - Fan coil system in central air conditioner - Google Patents
Fan coil system in central air conditioner Download PDFInfo
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- CN202485112U CN202485112U CN2012200180091U CN201220018009U CN202485112U CN 202485112 U CN202485112 U CN 202485112U CN 2012200180091 U CN2012200180091 U CN 2012200180091U CN 201220018009 U CN201220018009 U CN 201220018009U CN 202485112 U CN202485112 U CN 202485112U
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Abstract
The utility model provides a fan coil system in a central air conditioner, belongs to the technical field of an air conditioner, and solves the problems of the existing fan coil system that the temperature conditioning precision is low and the whole system is unstable. According to the fan coil system in the central air conditioner, the fan coil is connected with a water collector through a water inlet pipe; the fan coil is connected with a water distributor through a water reflowing pipe; the water reflowing pipe or the water inlet pipe is provided with a water pump; and the water reflowing pipe is serially connected with an electric two-way valve and a self-operated differential pressure control valve. The fan coil system has the advantages of high adjusting precision, stability in control and the like.
Description
Technical field
The utility model belongs to the air-conditioner technical field, relates to a kind of central air-conditioning, the fan coil system in particularly a kind of central air-conditioning.
Background technology
Central air conditioner system is by cold and heat source system, air handling system and end equipment.Refrigeration system is that air handling system provides institute's chilling requirement, in order to offset the refrigeration duty of indoor environment; Heating provides in order to offset the heat of indoor environment thermic load for the air-conditioning regulating system.Air handling system is to be used for the technology of temperature, humidity etc. of the air in the process chamber.End equipment makes to be delivered to the air after handling indoorly through blower fan, replace original air in the time of in inlet chamber.
Connect through conveyance conduit between the cold and heat source system of central air conditioner system, air handling system and the end equipment, electric two-way valve is installed on the pipeline.
Fan coil is a kind of end equipment that comparatively generally uses, and comprises that coil pipe, blower fan and new blower fan group temperature control system be made up of temperature controller, the temperature sensor that is installed in the ajutage.The effect of temperature controller is to compare the temperature of detected wind pushing temperature of temperature sensor that places supply air duct and temperature controller setting; And according to the result of PI computing; Temperature controller is given the signal of a close/open valve of electric two-way valve; Thereby make wind pushing temperature remain on needed scope, remain on set temperature thereby reach indoor temperature.
Traditional fan coil system or employing constant flow Hydraulic Power System; Through the stepping of end-equipment air quantity is controlled the adjusting that realizes the target area environment temperature, as adopting three speed switch to regulate the fan coil air quantity and carrying out the air quantity adjusting through the air quantity variable air conditioner case.But this adjusting is simple, rough and distributed, and regulating effect is bad, is easy to waste resource.
Along with people's is to the requirement of environmental degree of comfort and improving constantly of awareness of saving energy; This adjusting can not be satisfied; So people begin to adopt flow-changing water power system and variable air volume system, the water yield or the air quantity of system are regulated the accurate control that realizes environment temperature through motor-driven valve or air-valve actuator.
But in the bigger variable flow system of disposable load fluctuation; Because many motor-driven valves are worked simultaneously, the change of any motor-driven valve duty all can exert an influence to other motor-driven valve, and the antijamming capability of motor-driven valve itself is poor; Cause motor-driven valve frequent unlatching owing to the fluctuation of pressure in the system or flow; Thereby caused whole system unstable, to the ability of regulation and control decline of environment temperature, degree of regulation reduces.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, has proposed the fan coil system in the comparatively stable central air-conditioning of a kind of pressure reduction.
The purpose of the utility model can realize through following technical proposal: the fan coil system in a kind of central air-conditioning; Fan coil links to each other with water collector through water inlet pipe; Fan coil links to each other with water knockout drum through return pipe; Described return pipe or water inlet pipe are provided with water pump, it is characterized in that, are in series with electric two-way valve and Differential Pressure Controller on the described return pipe.
During work; The off-premises station of central air-conditioning produces cold (heat) water; Cold (heat) water is transported to respectively on the fan coil through water inlet pipe through water pump,, makes coil pipe surrounding air fall (liter) temperature through the heat exchange of coil pipe and air; Through blower fan heat-exchanged air is blown to indoorly again, the effect of heat exchange is preferably just arranged.Fan coil makes the room air that new blower fan group is installed fall (liter) temperature through heat exchange, refluxes through return pipe through cold (heat) water after the heat exchange.Because return pipe is provided with control of self-operated type pressure reduction and electric two-way valve; Because fan coil is provided with temperature sensor; The temperature that temperature sensor detects in the supply air duct compares, and according to the computing structure, signal is passed to controller; Controller sends the folding degree that signal is given electric two-way valve and controlled electric two-way valve, the scope that wind pushing temperature is remained on set; Also be provided with the Differential Pressure Controller of connecting with electric two-way valve on the return pipe, Differential Pressure Controller makes the constant pressure differential at electric two-way valve two ends, thereby makes electric two-way valve not receive the fluctuation of system's pressure reduction or flow and be affected.
In the fan coil system in above-mentioned central air-conditioning; The quantity of said fan coil is 2-10; Have some return branch on the described return pipe, have some water inlet arms on the said water inlet pipe, described each fan coil all links with a return branch and water inlet arm.Fan coil is the 2-10 group, and each fan coil all links with a return branch and water inlet arm, makes central air-conditioning can supply 2-10 user to use, through differential pressure control valve and electric two-way valve being set, pressure reduction in each return branch and constant flow.
In the fan coil system in above-mentioned central air-conditioning, the valve rod of described electric two-way valve and a YE link, and YE can actuate valve stem make two-port valve be in unlatching or closing state.
When needs freeze; Temperature controller places refrigeration mode, and when the temperature of sensor measurement reached or is lower than design temperature, temperature controller closed valve signal for one of YE; Actuate valve stem makes closing of two-port valve; Do not reach design temperature if measure temperature, temperature controller is given valve opening signal of YE, and actuate valve stem makes opening of two-port valve; When needs heat; Temperature controller places heating mode, and when the temperature of sensor measurement reached or is higher than design temperature, temperature controller closed valve signal for one of YE; Actuate valve stem makes closing of two-port valve; Do not reach design temperature if measure temperature, temperature controller is given valve opening signal of YE, and actuate valve stem makes opening of two-port valve.
In the fan coil system in above-mentioned central air-conditioning; Said Differential Pressure Controller comprises valve body, valve rod, spool and pressure regulation part; Have two cavitys on the valve body: water flowing chamber and control chamber, spool are arranged in the water flowing chamber, and an end of valve rod is arranged in the water flowing chamber and links with spool; The valve rod other end is arranged in control chamber and links in the pressure regulation part, and described pressure regulation part can apply valve rod and make it move down the active force of trend.
In the fan coil system in above-mentioned central air-conditioning; Described pressure regulation part is for being connected in the control chamber septation; Barrier film is divided into two neighbouring cavitys with control chamber, and the other end of above-mentioned valve rod is connected on the barrier film, also is provided with connecting pipe and connecting pipe on the said valve body and communicates with the barrier film upper chamber; Be provided with its two ends in the valve body and act on the spring on barrier film and the valve body respectively, have the trend of moving down at spring force effect lower diaphragm plate.
Under normal circumstances, the water pressure invariableness at the hydraulic pressure at water inlet end place and place, water side, i.e. water pressure invariableness in control chamber and the water flowing chamber.When hydraulic pressure was non-constant in control chamber and the water flowing chamber, it is the pressure reduction that like this comes constant user's water inlet end and water side: the opening under the normal condition was called poised state, i.e. initial setting up value.When poised state is broken because of the hydraulic pressure in the control chamber increases, at this moment, be located under the effect of the barrier film hydraulic pressure in control chamber in the valve body and move to the water flowing cavity direction; In the moving process, spool diminishes the valve openings degree, after the valve openings degree diminishes; The current at place, water side diminish, and the current of water inlet end are constant, and current will overstock at the place, water side; Hydraulic pressure uprises gradually, thus balance pressure reduction.
In the fan coil system in above-mentioned central air-conditioning, described pressure regulation part also comprises an adjusting handle, and adjusting handle is threadedly connected on the valve body, and an end of above-mentioned spring acts on the handwheel.
Can change the initial setting up value of poised state through adjusting handle.
In the fan coil system in above-mentioned central air-conditioning, said valve body is provided with two pressure measuring tie-ins, and two pressure measurement structures are connected with the entrance point and the port of export in valve body water flowing chamber respectively.With the understanding valve inleting water end that can also be instant in the crimp head of needle for measuring blood pressue inserting side and the hydraulic pressure of water side.
In the fan coil system in above-mentioned central air-conditioning, be provided with sealing ring between said valve rod and the valve body.
Compared with prior art, the fan coil system in this central air-conditioning has the following advantages:
1, is in series with electric two-way valve and Differential Pressure Controller on the return pipe and makes each the fan coil constant flow in this central air-conditioning, thereby make temperature in the control room that native system can be more stable;
2, through electric two-way valve and Differential Pressure Controller are set, when bringing comfortable human settlement, play the effect of energy savings to people.
Description of drawings
Fig. 1 is the structural representation of the fan coil system in this central air-conditioning.
Fig. 2 is the structural representation of Differential Pressure Controller in the fan coil system in this central air-conditioning.
Among the figure, 1, fan coil; 2, water inlet pipe; 2a, water inlet arm; 3, return pipe; 3a, return branch; 4, electric two-way valve; 5, Differential Pressure Controller; 6, valve body; 6a, water flowing chamber; 6b, control chamber; 7, valve rod; 8, barrier film; 9, connecting pipe; 10, spring; 11, sealing ring; 12, spool.
The specific embodiment
As depicted in figs. 1 and 2; Fan coil 1 links to each other with water collector through water inlet pipe 2 in the fan coil system in this central air-conditioning; Fan coil 1 links to each other with water knockout drum through return pipe 3; Described return pipe 3 or water inlet pipe 2 are provided with water pump, are in series with electric two-way valve 4 and Differential Pressure Controller 5 on the return pipe.The quantity of fan coil is 8, has some return branch 3a on the described return pipe 3, has some water inlet arm 2a on the said water inlet pipe 2, and described each fan coil 1 all links with a return branch 3a and water inlet arm 2a.The valve rod of electric two-way valve 4 and a YE link, and YE can actuate valve stem make two-port valve be in unlatching or closing state.
As shown in Figure 2; Differential Pressure Controller comprises valve body 6, valve rod 7, spool 12 and pressure regulation part; Have two cavitys on the valve body: water flowing chamber 6a and control chamber 6b, spool 12 are arranged in water flowing chamber 6a, and an end of valve rod 7 is arranged in water flowing chamber 6a and links with spool 12; Valve rod 7 other ends are arranged in control chamber 6b and link with the pressure regulation part, and described pressure regulation part can apply valve rod 7 and make it move down the active force of trend.
The pressure regulation part is for being connected in control chamber 6b septation 8; Barrier film 8 is divided into two neighbouring cavitys with control chamber 6b; The other end of above-mentioned valve rod 7 is connected on the barrier film 8; Also be provided with connecting pipe 9 and connecting pipe 9 on the said valve body 6 and communicate, be provided with its two ends in the valve body 6 and act on the spring 10 on barrier film 8 and the valve body 6 respectively, have the trend of moving down at spring 10 elastic force effect lower diaphragm plates 8 with barrier film 8 upper chamber.The pressure regulation part also comprises an adjusting handle, and adjusting handle is threadedly connected on the valve body, and an end of above-mentioned spring 10 acts on the handwheel.Valve body 6 is provided with two pressure measuring tie-ins, and two pressure measurement structures are connected with the entrance point and the port of export in valve body water flowing chamber respectively.In the present embodiment, be provided with sealing ring between valve rod and the valve body.
During work; The off-premises station of central air-conditioning produces cold (heat) water; Cold (heat) water is transported to respectively on the fan coil through water inlet pipe through water pump,, makes coil pipe surrounding air fall (liter) temperature through the heat exchange of coil pipe and air; Through blower fan heat-exchanged air is blown to indoorly again, the effect of heat exchange is preferably just arranged.Fan coil makes the room air that new blower fan group is installed fall (liter) temperature through heat exchange, refluxes through return pipe through cold (heat) water after the heat exchange.Because return pipe is provided with control of self-operated type pressure reduction and electric two-way valve; Because fan coil is provided with temperature sensor; The temperature that temperature sensor detects in the supply air duct compares, and according to the computing structure, signal is passed to controller; Controller sends the folding degree that signal is given electric two-way valve and controlled electric two-way valve, the scope that wind pushing temperature is remained on set; Also be provided with the Differential Pressure Controller of connecting with electric two-way valve on the return pipe, Differential Pressure Controller makes the constant pressure differential at electric two-way valve two ends, thereby makes electric two-way valve not receive the fluctuation of system's pressure reduction or flow and be affected.
Claims (8)
1. the fan coil system in the central air-conditioning; Fan coil (1) links to each other with water collector through water inlet pipe (2); Fan coil (1) links to each other with water knockout drum through return pipe (3); Described return pipe (3) or water inlet pipe (2) are provided with water pump, it is characterized in that, are in series with electric two-way valve (4) and Differential Pressure Controller (5) on the described return pipe (3).
2. the fan coil system in the central air-conditioning according to claim 1; It is characterized in that; The quantity of said fan coil (1) is 2-10; Have some return branch (3a) on the described return pipe (3), have some water inlet arms (2a) on the said water inlet pipe (2), described each fan coil (1) all links with a return branch (3a) and water inlet arm (2a).
3. the fan coil system in the central air-conditioning according to claim 2 is characterized in that, the valve rod (7) of described electric two-way valve (4) links with a YE, and YE can actuate valve stem (7) make two-port valve be in unlatching or closing state.
4. according to the fan coil system in claim 1 or the 2 or 3 described central air-conditioning; It is characterized in that; Said Differential Pressure Controller (5) comprises valve body (6), valve rod (7), spool (12) and pressure regulation part; Have two cavitys on the valve body (6): water flowing chamber (6a) and control chamber (6b), spool (12) is arranged in water flowing chamber (6a), and an end of valve rod (7) is arranged in water flowing chamber (6a) and links with spool (12); Valve rod (7) other end is arranged in control chamber (6b) and links in the pressure regulation part, and described pressure regulation part can apply valve rod (7) and make it move down the active force of trend.
5. the fan coil system in the central air-conditioning according to claim 4; It is characterized in that; Described pressure regulation part is for being connected in control chamber (6b) septation (8); Barrier film (8) is divided into two neighbouring cavitys with control chamber (6b), and the other end of above-mentioned valve rod (7) is connected on the barrier film (8), also is provided with connecting pipe (9) and connecting pipe (9) on the said valve body (6) and communicates with barrier film (8) upper chamber; Be provided with its two ends in the valve body (6) and act on the spring (10) on barrier film (8) and the valve body (6) respectively, have the trend of moving down at spring (10) elastic force effect lower diaphragm plate (8).
6. the fan coil system in the central air-conditioning according to claim 5 is characterized in that, described pressure regulation part also comprises an adjusting handle, and adjusting handle is threadedly connected on the valve body (6), and an end of above-mentioned spring (10) acts on the handwheel.
7. the fan coil system in the central air-conditioning according to claim 4 is characterized in that, said valve body (6) is provided with two pressure measuring tie-ins, and two pressure measurement structures are connected with the entrance point and the port of export in valve body (6) water flowing chamber (6a) respectively.
8. the fan coil system in the central air-conditioning according to claim 4 is characterized in that, is provided with sealing ring (11) between said valve rod (7) and the valve body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200180091U CN202485112U (en) | 2012-01-16 | 2012-01-16 | Fan coil system in central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200180091U CN202485112U (en) | 2012-01-16 | 2012-01-16 | Fan coil system in central air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN202485112U true CN202485112U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200180091U Expired - Fee Related CN202485112U (en) | 2012-01-16 | 2012-01-16 | Fan coil system in central air conditioner |
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| Country | Link |
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| CN (1) | CN202485112U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062842A (en) * | 2013-02-07 | 2013-04-24 | 江苏新城新能源有限公司 | Modular fan coil system |
| CN104236001A (en) * | 2013-06-17 | 2014-12-24 | 珠海格力电器股份有限公司 | air conditioner control system and method |
| CN104566630A (en) * | 2013-10-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Fan coil and mode conversion control method thereof |
| CN104833042A (en) * | 2014-02-12 | 2015-08-12 | 珠海格力电器股份有限公司 | Control method of fan coil reversing valve and fan coil system |
| CN106500252A (en) * | 2016-11-01 | 2017-03-15 | 青岛海信日立空调系统有限公司 | A kind of detection method of secondary refrigerant leakage, device and air-conditioning |
| CN110207344A (en) * | 2019-06-18 | 2019-09-06 | 悉地（北京）国际建筑设计顾问有限公司 | A kind of control method and device of fan coil |
-
2012
- 2012-01-16 CN CN2012200180091U patent/CN202485112U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062842A (en) * | 2013-02-07 | 2013-04-24 | 江苏新城新能源有限公司 | Modular fan coil system |
| CN103062842B (en) * | 2013-02-07 | 2016-01-20 | 江苏新城新能源有限公司 | Modular fan coil system |
| CN104236001A (en) * | 2013-06-17 | 2014-12-24 | 珠海格力电器股份有限公司 | air conditioner control system and method |
| CN104566630A (en) * | 2013-10-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Fan coil and mode conversion control method thereof |
| CN104833042A (en) * | 2014-02-12 | 2015-08-12 | 珠海格力电器股份有限公司 | Control method of fan coil reversing valve and fan coil system |
| CN104833042B (en) * | 2014-02-12 | 2019-01-29 | 珠海格力电器股份有限公司 | Control method of fan coil reversing valve and fan coil system |
| CN106500252A (en) * | 2016-11-01 | 2017-03-15 | 青岛海信日立空调系统有限公司 | A kind of detection method of secondary refrigerant leakage, device and air-conditioning |
| CN106500252B (en) * | 2016-11-01 | 2019-01-04 | 青岛海信日立空调系统有限公司 | A kind of detection method of secondary refrigerant leakage, device and air-conditioning |
| CN110207344A (en) * | 2019-06-18 | 2019-09-06 | 悉地（北京）国际建筑设计顾问有限公司 | A kind of control method and device of fan coil |
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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: 20121010 Termination date: 20150116 |
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| EXPY | Termination of patent right or utility model |