CN201311033Y - Heat recovery type fresh air exchange system - Google Patents
Heat recovery type fresh air exchange system Download PDFInfo
- Publication number
- CN201311033Y CN201311033Y CNU2008201400374U CN200820140037U CN201311033Y CN 201311033 Y CN201311033 Y CN 201311033Y CN U2008201400374 U CNU2008201400374 U CN U2008201400374U CN 200820140037 U CN200820140037 U CN 200820140037U CN 201311033 Y CN201311033 Y CN 201311033Y
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- China
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- air
- copper tube
- heat recovery
- heat exchanger
- fresh air
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Abstract
The utility model discloses a heat recovery type fresh air exchange system comprising an exhaust fan installed in an exhaust duct; the exhaust fan is adjacent to one aluminum finned copper tube heat exchanger which is connected with the other aluminum finned copper tube heat exchanger adjacent to an air inlet fan, the two aluminum finned copper tube heat exchangers are directly connected by a pipeline, and a throttling expansion element is connected to the pipeline; the two aluminum finned copper tube heat exchangers are respectively connected with a four-way reversing valve through pipelines, and the four-way reversing valve is connected with a refrigerating compressor, thereby a cooling medium circulative loop is formed; the air inlet fan is installed in an air inlet duct, and the air inlet duct is provided with an air filter screen; and the exhaust dust is internally provided with another air filter screen. The heat recovery type fresh air exchange system can reach 100 percent of heat recovery efficiency, can directly exchange heat at a fresh air outlet and an exhaust outlet, prevents fresh air and indoor air from forming an air path cutting off and saves the energy waste to the utmost extent.
Description
Technical field
The utility model relates to the logical technical field of pipe, is meant the heat recovery type fresh air air exchange system especially.
Background technology
Closed public place has all been installed and has been renewed wind system, if but be simple import outdoor air indoor and indoor air is sent the outdoor new wind replacing of carrying out, can cause the massive losses of air-conditioning heat energy undoubtedly, because air indoor when summer is handled through refrigeration, the relative outdoor air of its enthalpy is much lower, and it directly is discharged to outdoor again that the air suction of outdoor high enthalpy is indoor, will inevitably strengthen the thermic load of air-conditioning, and in the winter time the time indoor air through heating processing, the relative outdoor air of its enthalpy is much higher, and it directly is discharged to outdoor again that the air suction of outdoor low enthalpy is indoor, will inevitably strengthen the thermic load of air-conditioning equally.
In view of the situation, some scientific and technical personnel have proposed to utilize new wind and have discharged and carried out heat exchange between the wind and reach energy-conservation purpose scheme, just now more common rotary-type new wind-heat reclaims unit, but from situation about implementing, there are three kinds of problems in this scheme, first, because the consideration of air channel windage loss, make that the distance of the exhaust outlet of this mode and fresh wind port can not be too far away, this just might cause the short circuit of wind path and the effect that influences the quality of new wind and finally cause IAQ to promote, and the second, the design in air channel is too complicated, cause manufacturing cost too high, the 3rd, also be the most important, because most effective 60% the heat recovery efficiency of also only having an appointment that adopts this scheme, energy-conservation completely purpose can not be reached, bigger heat loss can be brought all the time.
The utility model content
In view of this, the utility model is to provide the heat recovery type fresh air air exchange system, reclaims unit, complex structure, the problem that heat recovery efficiency is low to solve above-mentioned rotary-type new wind-heat.
For addressing the above problem, the utility model provides the heat recovery type fresh air air exchange system, comprising:
Be installed in the air draft blower fan in the exhaust duct, the adjacent aluminium copper tube with fins of air draft blower fan heat exchanger, aluminium copper tube with fins heat exchanger connects another aluminium copper tube with fins heat exchanger adjacent with air intake blower fan, and two aluminium copper tube with fins heat exchangers directly link to each other by pipeline, and connect the throttling expansion element on the pipeline; Two aluminium copper tube with fins heat exchangers connect four-way change-over valve by pipeline respectively, and four-way change-over valve connects refrigeration compressor, and air intake blower fan is installed in the intake stack.
In addition, intake stack is equipped with air filter screen; Air filter screen is installed in exhaust duct.
The heat recovery type fresh air air exchange system contrasts rotary-type new wind-heat recovery system very big advantage on heat recovery efficiency, utilize Carnot cycle and contrary Carnot cycle to carry out the transfer of heat, because indoor temperature is lower, can better bring into play the efficient of compressor cooling fully, EER and COP value even can reach about 4.0～5.0, can reach 100% heat recovery efficiency fully, the economy of its long-time running is that rotary-type new wind-heat recovery system is incomparable.
The recuperation of heat air-conditioning contrasts rotary-type new wind-heat recovery system and is installing very big advantage, because during the design of rotary-type system is that requirement is directly carried out exchange heat with new wind and indoor wind, structurally require new wind and indoor wind are focused on, but in order to prevent that new wind and indoor wind from forming path short circuit, looking for novelty air port and exhaust outlet again can not be too near, this has just caused rotary-type new wind-heat recovery system must be furnished with long airduct air channel when mounted, so cause the increase of windage loss in the increase of mounting cost and the air channel.
The heat recovery type fresh air air exchange system can adopt the medium of refrigerant as new wind and the exchange of indoor wind energy, structurally do not need new wind and indoor wind are focused on, can directly carry out heat exchange at fresh wind port and exhaust outlet place, so just avoided new wind and indoor wind to form path short circuit, and can effectively prolong distance between fresh wind port and exhaust outlet when maximum (can reach tens of rice), the windage loss that does not have the air channel, the waste of farthest having saved energy.
Description of drawings
Fig. 1 is the structure chart of embodiment.
The specific embodiment
For clearly demonstrating the technical scheme in the utility model, provide preferred embodiment below and be described with reference to the accompanying drawings.
Referring to Fig. 1, this heat recovery type fresh air air exchange system comprises:
Be installed in the air draft blower fan 1 in the exhaust duct, air draft blower fan 1 adjacent aluminium copper tube with fins heat exchanger 2 and the air filter screen 4 that is installed in the exhaust duct, aluminium copper tube with fins heat exchanger 2 connects the aluminium copper tube with fins heat exchanger 9 adjacent with air intake blower fan 10, aluminium copper tube with fins heat exchanger 9 and aluminium copper tube with fins heat exchanger 2 directly link to each other by pipeline, and connect throttling expansion element 7 on the pipeline, aluminium copper tube with fins heat exchanger 9 is connected four-way change-over valve 6 by pipeline respectively with aluminium copper tube with fins heat exchanger 2, four-way change-over valve 6 connects refrigeration compressor 5, air intake blower fan 10 is installed in the intake stack, and intake stack is equipped with air filter screen 8.
Elaborate the course of work of heat recovery type fresh air air exchange system below:
To use summer circulation to be example, refrigeration compressor 5 will suck the fluorine Lyons gas that is compressed into HTHP from fluorine Lyons gas of the low-temp low-pressure in the aluminium copper tube with fins heat exchanger 9 (being evaporimeter) at air intake blower fan 10 places, flow through the then aluminium copper tube with fins heat exchanger 2 (being condenser) at air draft blower fan 1 place, fluorine Lyons of HTHP is through liquid fluorine Lyons of warm high pressure in being condensed into being discharged from that outdoor room air carries out heat exchange in condenser, and then the throttling expansion element 7 of flowing through (being the heating power expansion valve), throttling becomes fluorine Lyons gas-liquid two-phase object of low-temp low-pressure, fluorine Lyons liquid of low-temp low-pressure absorbs the heat from outdoor air in the evaporimeter at air intake blower fan 10 places then, become fluorine Lyons gas of low-temp low-pressure, the cooled again compressor 5 of fluorine Lyons gas of low-temp low-pressure is inhaled the people.Outdoor air has discharged heat through behind the evaporimeter, and air themperature descends.So compression----condensation----throttling----evaporation circulation repeatedly, cold-producing medium is constantly taken away from the heat of the new wind air of outdoor suction, and the heat of this part recovery transferred to from indoor toward the air that effluxes through refrigerant, thereby reduced the temperature of the new wind air that enters the room.And in this process, because the working environment air themperature of the condenser of air draft place is near indoor environment temperature, just about about 26～28 degrees centigrade, and just in time be its duty the most efficiently for the R410a refrigerant under this state, the Energy Efficiency Ratio EER in this time nearly will exceed 30% than the efficiency of the duty (about 35 degrees centigrade of environment temperature) of common air-conditioning, and this has just guaranteed the high efficiency of heat recovery type fresh air air exchange system.
And use circulation time winter, and by the switching of four-way change-over valve 6, changed the flow direction of cold-producing medium, make the aluminium copper tube with fins heat exchanger 9 at air intake blower fan 10 places become condenser, and the aluminium copper tube with fins heat exchanger 2 at air draft blower fan 1 place become evaporimeter.Compressor 5 will suck the fluorine Lyons gas that is compressed into HTHP from fluorine Lyons gas of the low-temp low-pressure in the evaporimeter at air draft blower fan 1 place, flow through the then condenser at air intake blower fan 10 places, liquid fluorine Lyons of warm high pressure being condensed into is passed through with being carried out heat exchange by the new wind air from outdoor suction in fluorine Lyons of HTHP in condenser, and then the heating power expansion valve of flowing through (capillary), throttling becomes fluorine Lyons gas-liquid two-phase object of low-temp low-pressure, fluorine Lyons liquid of low-temp low-pressure absorbs the heat from room air in the evaporimeter at air draft blower fan 1 place then, become fluorine Lyons gas of low-temp low-pressure, fluorine Lyons gas of low-temp low-pressure is inhaled the people by compressor again.Behind the new wind process condenser of outdoor introducing, absorbed from effluxing the heat that room air is retrieved, air themperature rises.So compression----condensation----throttling----evaporation circulation repeatedly, cold-producing medium constantly absorbs the heat toward the room air that effluxes from indoor, and the heat of this part recovery transferred to from the new wind of outdoor introducing through refrigerant, thereby the temperature of the new wind air that enters the room of having raise.Reach the purpose that heat new wind winter.And in this process, because the working environment air themperature of the evaporimeter at air intake blower fan 10 places is near indoor environment temperature, just about about 23～25 degrees centigrade, and just in time can guarantee to be in the duty of more efficient under this state to aluminium finned heat exchanger 9, because the temperature difference of air and refrigerant is bigger, because common air-conditioning about 7 degrees centigrade of environment temperature in the winter time the time, just the temperature difference is wanted big nearly 15～18 degrees centigrade, the Energy Efficiency Ratio COP in this time nearly will exceed 30% than the efficiency of the duty (about 7 degrees centigrade of environment temperature) of common air-conditioning, and this has also just guaranteed the high efficiency of heat recovery type fresh air air exchange system equally.
The heat recovery type fresh air air exchange system contrasts rotary-type new wind-heat recovery system very big advantage on heat recovery efficiency, because during the design of rotary-type system is that requirement is directly carried out exchange heat with new wind and indoor wind, owing to the reason in cost and space can not get design of heat exchanger infinitely great, therefore can only accomplish about 60% heat recovery efficiency basically, lose remaining 40% heat.
The heat recovery type fresh air air exchange system is owing to adopted the medium of refrigerant as new wind and the exchange of indoor wind energy, utilize Carnot cycle and contrary Carnot cycle to carry out the transfer of heat, because indoor temperature is lower, can better bring into play the efficient of compressor cooling fully, EER and COP value even can reach about 4.0～5.0, can reach 100% heat recovery efficiency fully, the economy of its long-time running is that rotary-type new wind-heat recovery system is incomparable.
The heat recovery type fresh air air exchange system contrasts rotary-type new wind-heat recovery system and is installing very big advantage, because during the design of rotary-type system is that requirement is directly carried out exchange heat with new wind and indoor wind, structurally require new wind and indoor wind are focused on, but in order to prevent that new wind and indoor wind from forming path short circuit, looking for novelty air port and exhaust outlet again can not be too near, this has just caused rotary-type new wind-heat recovery system must be furnished with long airduct air channel when mounted, so cause the increase of windage loss in the increase of mounting cost and the air channel.
The heat recovery type fresh air air exchange system is owing to adopted the medium of refrigerant as new wind and the exchange of indoor wind energy, structurally do not need new wind and indoor wind are focused on, can directly carry out heat exchange at fresh wind port and exhaust outlet place, so just avoided new wind and indoor wind to form path short circuit, and can effectively prolong distance between fresh wind port and exhaust outlet when maximum (can reach tens of rice), the windage loss that does not have the air channel, the waste of farthest having saved energy.
For the heat recovery type fresh air air exchange system of being set forth among each embodiment of the utility model, all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1, the heat recovery type fresh air air exchange system is characterized in that, comprising:
Be installed in the air draft blower fan (1) in the exhaust duct, air draft blower fan (1) adjacent aluminium copper tube with fins heat exchanger (2), aluminium copper tube with fins heat exchanger (2) connects the aluminium copper tube with fins heat exchanger (9) adjacent with air intake blower fan (10), aluminium copper tube with fins heat exchanger (9) directly links to each other by pipeline with aluminium copper tube with fins heat exchanger (2), and connects throttling expansion element (7) on the pipeline; Aluminium copper tube with fins heat exchanger (9) is connected four-way change-over valve (6) by pipeline respectively with aluminium copper tube with fins heat exchanger (2), and four-way change-over valve (6) connects refrigeration compressor (5), and air intake blower fan (10) is installed in the intake stack.
2, heat recovery type fresh air air exchange system according to claim 1 is characterized in that, intake stack is equipped with air filter screen (8); Air filter screen (4) is installed in exhaust duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201400374U CN201311033Y (en) | 2008-10-20 | 2008-10-20 | Heat recovery type fresh air exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201400374U CN201311033Y (en) | 2008-10-20 | 2008-10-20 | Heat recovery type fresh air exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311033Y true CN201311033Y (en) | 2009-09-16 |
Family
ID=41108288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201400374U Expired - Fee Related CN201311033Y (en) | 2008-10-20 | 2008-10-20 | Heat recovery type fresh air exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311033Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520101A (en) * | 2018-11-14 | 2019-03-26 | 清华大学 | Heat-recovering fresh air system and working method |
-
2008
- 2008-10-20 CN CNU2008201400374U patent/CN201311033Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520101A (en) * | 2018-11-14 | 2019-03-26 | 清华大学 | Heat-recovering fresh air system and working method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20111020 |