CN203518071U - Antifreeze type fresh air pre-heating and control device - Google Patents
Antifreeze type fresh air pre-heating and control device Download PDFInfo
- Publication number
- CN203518071U CN203518071U CN201320609308.7U CN201320609308U CN203518071U CN 203518071 U CN203518071 U CN 203518071U CN 201320609308 U CN201320609308 U CN 201320609308U CN 203518071 U CN203518071 U CN 203518071U
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- Prior art keywords
- fresh air
- heat exchanger
- control device
- valve
- electromagnetic valve
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- 238000010438 heat treatment Methods 0.000 title abstract description 9
- 230000002528 anti-freeze Effects 0.000 title abstract 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000007710 freezing Methods 0.000 claims abstract description 14
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 4
- 230000009469 supplementation Effects 0.000 claims description 4
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000004378 air conditioning Methods 0.000 description 6
- 230000004087 circulation Effects 0.000 description 5
- 230000009172 bursting Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Steam Or Hot-Water Central Heating Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Provided is an antifreeze type fresh air pre-heating and control device. A filter (1) and an electric regulating valve (3) are mounted on a hot water pipeline on one side of a plate heat exchanger (2), a front electromagnetic valve (4), a frequency conversion circulating pump (6) and a fresh air unit (8) are mounted on an ethanediol aqueous solution pipeline on the other side of the plate heat exchanger (2), and a rear electromagnetic valve (5) is connected between an ethanediol aqueous solution inlet and an ethanediol aqueous solution outlet of the plate heat exchanger (2) on the ethanediol aqueous solution pipeline behind the front electromagnetic valve (4) to form short circuit. Under the control of a special system, low-grade energy is used for replacing high-grade energy, working medium heat is used for directly heating fresh air, the primary energy ratio is improved, a coil pipe can crack due to freezing, and the requirements for green buildings, energy saving and environment protecting are met. System operation cost is saved, the design is smart, the structure is compact, safety and stability are achieved, operation is convenient and saves energy, and manufacturing and maintaining are economical and practical. The antifreeze type fresh air pre-heating and control device can be safely used in cold areas and severe cold areas.
Description
Technical field
The utility model relates to new wind conveyance assisting device, especially anti-freezing type fresh air preheating and control device in central air-conditioning.
Background technology
In primary retirn air air-conditioning unit, if when winter, outdoor air enthalpy was lower than certain value, just need to carry out preheating to new wind, otherwise mixed air cannot be processed ventilation state point.Especially, for the air-conditioning system of clean operating room, clean room, because resh air requirement demand is larger, often adopt the mode of independent new blower fan group, the new wind of handling well carries out cold and hot processing after sending into and mixing with return air in different Air-conditioning Cycle units again.If do not carry out fresh air preheating, there is the risk of freezing Air-conditioning Cycle unit coil pipe.
The fresh air preheating mode adopting is at present generally electrical heating and hot water heating; due to; when system-down; the easy bursting by freezing of water heater funnel; so the fresh air preheating mode that a lot of field of purification adopt is selected electric preheating; but there is the problem of energy waste in electric preheating, and in the region of some power shortages, the impact of easily being rationed the power supply.The main cause that does not adopt hot water preheated air is the generation that prevents coil frost broken, adopts the freeze proof glycol water can head it off.Fresh air preheating generally adopts electrical heating at present, wastes the high-quality energy, does not meet the requirement of green building.
Various countries put into effect the construction of some laws, rules promotion green building, require building " green " to change energy-saving and emission-reduction, in corresponding standard, all limited electrically heated application, pertinent literature is clearly stipulated: except some special circumstances, do not allow to use boilers heated electrically, electric heater as the thermal source of heating, air-conditioning.In document, also stipulate: for air cleaning and conditioning systems such as clean operation departments, adopt technical measures to reduce again thermal power 50% than primary retirn air system.
Utility model content
The purpose of this utility model is to provide a kind of anti-freezing type fresh air preheating and control device, the control system of design specialized so that security of system, efficiently operation.
The purpose of this utility model will realize by following technical measures: on plate type heat exchanger one side hot water piping, filter and electric control valve are installed, magnetic valve, frequency variable circulating pump and new blower fan group before installing on plate type heat exchanger opposite side glycol water pipeline, and the plate type heat exchanger glycol water on the glycol water pipeline at front magnetic valve rear connects rear electromagnetic valve and forms short circuit between importing and exporting.
Especially, between frequency variable circulating pump and new blower fan group, connect liquid supplementation pipe 7.
Especially, hot water piping connects hot water pipe valve.
Especially, on plate type heat exchanger glycol water pipeline water return outlet, there is balancing side warm spot, between balancing side warm spot and electric control valve, connect controller.
Especially, on the pipeline between rear electromagnetic valve and new blower fan group, there is low-temperature protection point for measuring temperature, between front magnetic valve, rear electromagnetic valve and low-temperature protection point for measuring temperature, by control valve, connect.
Especially, in new blower fan group, return on the pipeline of plate type heat exchanger and have pressure tap, between pressure tap and frequency variable circulating pump, connect controller.
Advantage of the present utility model and effect: under the control of proprietary system, with low-grade energy, replace high-grade energy, with working medium heat, directly heat new wind, raising primary energy ratio, can bursting by freezing coil pipe, meets the requirement of green building, energy-conserving and environment-protective.Saving systematic running cost is used.Design is dexterous, compact conformation, and safety and stability, easy to operate energy-conservation, manufacture and safeguard economical and practical.At cold district and severe cold area, can use safely.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation.
Reference numeral comprises: filter 1, plate type heat exchanger 2, electric control valve 3, front magnetic valve 4, rear electromagnetic valve 5, frequency variable circulating pump 6, liquid supplementation pipe 7, new blower fan group 8.
The specific embodiment
In the utility model, system comprises two circulations, is respectively hot water pipe net circulation and glycol water circulation.Fresh air preheating heat comes from building hot water pipe net, and the hot water in pipe network is transmitted to glycol water by plate type heat exchanger 2 by heat, and this solution enters in the preheat coil of new blower fan group 8 again and heats new wind.
The utility model comprises: filter 1, plate type heat exchanger 2, electric control valve 3, front magnetic valve 4, rear electromagnetic valve 5, frequency variable circulating pump 6 and new blower fan group 8.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1: on plate type heat exchanger 2 one side hot water pipings, filter 1 and electric control valve 3 are installed, magnetic valve 4, frequency variable circulating pump 6 and new blower fan group 8 before installing on plate type heat exchanger 2 opposite side glycol water pipelines, and plate type heat exchanger 2 glycol waters on the glycol water pipeline at front magnetic valve 4 rears connect rear electromagnetic valve 5 between importing and exporting and form short circuit.
In aforementioned, between frequency variable circulating pump 6 and new blower fan group 8, connect liquid supplementation pipe 7.
In aforementioned, hot water piping connects hot water pipe valve 9.
In aforementioned, on plate type heat exchanger 2 glycol water pipeline water return outlets, there is balancing side warm spot T1, between balancing side warm spot T1 and electric control valve 3, connect controller PID.
In aforementioned, on the pipeline between rear electromagnetic valve 5 and new blower fan group 8, there is low-temperature protection point for measuring temperature T2, between front magnetic valve 4, rear electromagnetic valve 5 and low-temperature protection point for measuring temperature T2, by control valve C, connect.
In aforementioned, on the pipeline of new 8 times plate type heat exchangers 2 of blower fan group, there is pressure tap P, between pressure tap P and frequency variable circulating pump 6, connect controller PID.
In the utility model, start hot water pipe valve 9, first the hot water in hot water pipe net pass through filter 1, enters plate type heat exchanger 2, transfers heat to therein after ethylene glycol, and the electric control valve 3 of flowing through, gets back to hot water pipe net, completes hot water circuit; Glycol water after plate type heat exchanger 2 heating is sent in the heat exchange dish of new blower fan group 8, by frequency variable circulating pump 6, through front magnetic valve 4, sends back in plate type heat exchanger 2, forms ethylene glycol heat exchange circulation.
In the utility model, preheating and heat-exchange system mainly comprise the control of three aspects:.Comprise: for ease of the control of fresh air preheating amount in new blower fan group 8 and the pump merit of saving hot water pipe net, need to control effluent temperature constancy, by the value of feedback of point for measuring temperature T1, regulate the electric control valve 3 of hot water circuit, when leaving water temperature is too high, by controller, PID regulates, and reduces the aperture of electric control valve 3; When leaving water temperature is too low, increase the aperture of electric control valve 3.For preventing plate type heat exchanger 2 bursting by freezing, magnetic valve 4 and rear electromagnetic valve 5 before setting, take 0 ℃ as example, the temperature value obtaining as point for measuring temperature T2 during lower than setting value, is closed front magnetic valve 4, opens rear electromagnetic valve 5, until temperature, higher than when setting value, reopen front magnetic valve 4, close rear electromagnetic valve 5.For save ethylene glycol variable frequency pump merit in new blower fan group 8 situations of varying number, set the pressure acquisition point of Glycol Circulation System, the variation of the systemic circulation pressure bringing according to the difference of new blower fan group 8 quantity, the frequency of adjustment ethylene glycol variable frequency pump.Hot water in building hot water pipe net is transmitted to glycol water by plate type heat exchanger by heat, this solution enters in the preheat coil of new blower fan group again and heats new wind, by proprietary control system, can make fresh air preheating security of system, efficient, energy-saving run.
The utility model meets < < green building assessment standard (GB50378-2006) > >, < < public building energy design standard (GB50189-2005) > >, the requirement of the standards such as < < green hospital building evaluation criterion (CSUS/GBC 2-2011) > >.
Claims (6)
1. anti-freezing type fresh air preheating and control device, comprise filter (1), plate type heat exchanger (2), electric control valve (3), front magnetic valve (4), rear electromagnetic valve (5), frequency variable circulating pump (6) and new blower fan group (8); It is characterized in that, filter (1) and electric control valve (3) are installed on plate type heat exchanger (2) one side hot water pipings, magnetic valve (4), frequency variable circulating pump (6) and new blower fan group (8) before installing on plate type heat exchanger (2) opposite side glycol water pipeline, and plate type heat exchanger (2) glycol water on the glycol water pipeline at front magnetic valve (4) rear connects rear electromagnetic valve (5) and forms short circuit between importing and exporting.
2. anti-freezing type fresh air preheating as claimed in claim 1 and control device, is characterized in that, between frequency variable circulating pump (6) and new blower fan group (8), connects liquid supplementation pipe (7).
3. anti-freezing type fresh air preheating as claimed in claim 1 and control device, is characterized in that, hot water piping connects hot water pipe valve (9).
4. anti-freezing type fresh air preheating as claimed in claim 1 and control device, it is characterized in that, on plate type heat exchanger (2) glycol water pipeline water return outlet, there is balancing side warm spot (T1), between balancing side warm spot (T1) and electric control valve (3), connect controller (PID).
5. anti-freezing type fresh air preheating as claimed in claim 1 and control device; it is characterized in that; on the pipeline between rear electromagnetic valve (5) and new blower fan group (8), there is low-temperature protection point for measuring temperature (T2), between front magnetic valve (4), rear electromagnetic valve (5) and low-temperature protection point for measuring temperature (T2), by control valve (C), connect.
6. anti-freezing type fresh air preheating as claimed in claim 1 and control device, it is characterized in that, on the pipeline of new blower fan group (8) time plate type heat exchanger (2), there is pressure tap (P), between pressure tap (P) and frequency variable circulating pump (6), connect controller (PID).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609308.7U CN203518071U (en) | 2013-09-30 | 2013-09-30 | Antifreeze type fresh air pre-heating and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609308.7U CN203518071U (en) | 2013-09-30 | 2013-09-30 | Antifreeze type fresh air pre-heating and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203518071U true CN203518071U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609308.7U Expired - Fee Related CN203518071U (en) | 2013-09-30 | 2013-09-30 | Antifreeze type fresh air pre-heating and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203518071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566719A (en) * | 2014-12-29 | 2015-04-29 | 北京格瑞力德空调科技有限公司 | Anti-freezing air conditioner |
| CN114941862A (en) * | 2022-05-23 | 2022-08-26 | 北京新机场建设指挥部 | Aircraft ground air conditioner heating system |
-
2013
- 2013-09-30 CN CN201320609308.7U patent/CN203518071U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566719A (en) * | 2014-12-29 | 2015-04-29 | 北京格瑞力德空调科技有限公司 | Anti-freezing air conditioner |
| CN114941862A (en) * | 2022-05-23 | 2022-08-26 | 北京新机场建设指挥部 | Aircraft ground air conditioner heating system |
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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: 20140402 Termination date: 20170930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |