CN204227617U - A kind of year round cooling type direct-evaporation-type unitary air handling unit - Google Patents
A kind of year round cooling type direct-evaporation-type unitary air handling unit Download PDFInfo
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- CN204227617U CN204227617U CN201420695078.5U CN201420695078U CN204227617U CN 204227617 U CN204227617 U CN 204227617U CN 201420695078 U CN201420695078 U CN 201420695078U CN 204227617 U CN204227617 U CN 204227617U
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Abstract
The utility model relates to a kind of year round cooling type direct-evaporation-type unitary air handling unit.This kind of year round cooling type direct-evaporation-type unitary air handling unit, comprise the direct-expansion coil and expansion valve that are positioned at indoor cabinet and the compressor being positioned at outdoor cabinet, condenser fan, condenser coil, fan governor, temperature sensor, reservoir and device for drying and filtering, described indoor cabinet is connected by pipeline with outdoor cabinet; The exhaust outlet of described compressor connects condenser coil, reservoir, device for drying and filtering, expansion valve and direct-expansion coil in turn, and the other end of described direct-expansion coil is connected with the air entry of described compressor, forms complete refrigerating circuit; Described temperature sensor is connected with the signal input part of fan governor, and the control output end of described fan governor is connected with condenser fan, and described condenser fan is installed on above described condenser coil.
Description
Technical field
The utility model belongs to HVAC technical applications, particularly a kind of year round cooling type direct-evaporation-type unitary air handling unit.
Background technology
Along with the raising of expanding economy and living standards of the people, the use of air-conditioning is increasingly extensive, based on the factor of energy saving standard, the cost of conventional air conditioning system is large, energy consumption great achievement people's questions of common concern.For the current modal Large Central Air Conditioning System system of the composition such as cooling-water machine and air conditioning terminal unit, the pattern of its heat exchange method is cold-producing medium-water-air, namely cold-producing medium first absorbs heat to water, generate chilled water, chilled water again by Pipeline transport in the end unit such as fan coil in room, by unit inner blower circulation blowing, make the chilled water heat exchange in room air and coil pipe, generate " cold air " and blow down.This mode also exists the problems such as initial cost is large, energy consumption is many, present at resource growing tension, energy-conservationly must become a kind of trend.
In addition, have a kind of direct-evaporation-type unitary air handling unit, it not only without cooling, chilled water system, save the investment of the auxiliary devices such as cooling tower, water pump, pipeline, and decrease heat exchange link, improve heat exchange efficiency, decrease heat loss.But the heat of existing direct-evaporation-type unitary air handling unit discharge has been come by the heat convection of cold-producing medium and air, and environment temperature changes with seasonal variations, and the condensation effect of unit also can with seasonal variations, and namely condensation temperature is in continuous change.In order to protect compressor, when condensation temperature is lower than certain value time, compressor does not allow to drop into.When outdoor temperature is lower, and air-conditioned room needs cooling, and does not allow to send into more new wind, and when namely using new wind to lower the temperature, direct-evaporation-type unitary air handling unit common is at present non-serviceable.
Therefore, how to control condensation air quantity and controlled by condensing pressure within rational scope, ensure that refrigeration compressor can safely and steadily run, making unit realize year round cooling becomes the technical problem needing solution badly.
Summary of the invention
The technical problems to be solved in the utility model is the above-mentioned defect how overcoming prior art, provides a kind of year round cooling type direct-evaporation-type unitary air handling unit.
The utility model is achieved through the following technical solutions:
This kind of year round cooling type direct-evaporation-type unitary air handling unit, comprise the direct-expansion coil and expansion valve that are positioned at indoor cabinet and the compressor being positioned at outdoor cabinet, condenser fan, condenser coil, fan governor, temperature sensor, reservoir and device for drying and filtering, described indoor cabinet is connected by pipeline with outdoor cabinet;
The exhaust outlet of described compressor connects condenser coil, reservoir, device for drying and filtering, expansion valve and direct-expansion coil in turn, and the other end of described direct-expansion coil is connected with the air entry of described compressor, forms complete refrigerating circuit;
Described temperature sensor is connected with the signal input part of fan governor, and the control output end of described fan governor is connected with condenser fan, and described condenser fan is installed on above described condenser coil.
As optimization, the in-built cold-producing medium of described direct-expansion coil.
As optimization, described indoor cabinet is connected by copper pipe with outdoor cabinet.
As optimization, described condenser fan is driven by Brush-Less DC motor.
The beneficial effect of a kind of year round cooling type of the utility model direct-evaporation-type unitary air handling unit is:
This kind of year round cooling type direct-evaporation-type unitary air handling unit structure is simple, design science, be convenient to install, can ensure that direct evaporating air conditioner group year round cooling runs, its efficient Energy Efficiency Ratio can be maintained again, and system run all right, life-span increases, and has good actual application value and promotional value.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this kind of year round cooling type direct-evaporation-type unitary air handling unit is described further:
Fig. 1 is the structural representation of this kind of year round cooling type direct-evaporation-type unitary air handling unit.
In figure: 1 be air inlet, 2 be fan assembly, 3 be filter, 4 be direct-expansion coil, 5 be air outlet, 6 be expansion valve, 7 be compressor, 8 be condenser fan, 9 be condenser coil, 10 be fan governor, 11 be temperature sensor, 12 be reservoir, 13 for device for drying and filtering.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the utility model is further described.
As shown in Figure 1, this a kind of year round cooling type direct-evaporation-type unitary air handling unit, by air inlet 1, fan assembly 2, filter 3, direct-expansion coil 4, air outlet 5, expansion valve 6, compressor 7, condenser fan 8, condenser coil 9, fan governor 10, temperature sensor 11, reservoir 12, device for drying and filtering 13 forms, air inlet 1, fan assembly 2, filter 3, direct-expansion coil 4, air outlet 5, expansion valve 6 is positioned at indoor cabinet, condenser fan 8, condenser coil 9, fan governor 10, temperature sensor 11, reservoir 12, device for drying and filtering 13 is positioned at outdoor cabinet, air enters room through air inlet 1, fan assembly 2, filter 3, direct-expansion coil 4, air outlet 5 successively, in described direct-expansion coil 4, flowing is cold-producing medium, and cold-producing medium directly evaporates the heat absorbing direct-expansion coil 4 surrounding air in direct-expansion coil 4, thus reduces the temperature of air, described indoor cabinet is connected by copper pipe with outdoor cabinet,
The exhaust outlet of described compressor 7 connects condenser coil 9, reservoir 12, device for drying and filtering 13, expansion valve 6 and direct-expansion coil 4 in turn, and the other end of described direct-expansion coil 4 is connected with the air entry of described compressor 7, forms complete refrigerating circuit; Described temperature sensor 11 is connected with the signal input part of fan governor 10, and the control output end of described fan governor 10 is connected with condenser fan 8, and described condenser fan 8 is installed on above described condenser coil 9;
Described condenser fan 8 is driven by Brush-Less DC motor, and the environment temperature that condenser fan 8 rotating speed records according to temperature sensor 11 realizes step-less adjustment, thus realizes the step-less adjustment of air quantity, makes condensing pressure control within rational scope; During summer operation, environment temperature is high, and the difference between environment temperature and condensation temperature is less, and now condensation fan needs high-speed cruising, for direct-evaporation-type unit provides best radiating condition, realizes unit Effec-tive Function; Winter or outdoor environment temperature lower time, condensation temperature and environment temperature difference are comparatively large, and now condensation fan needs low cruise, and make unit condensation temperature unlikely too low, compressor can run well.In a word, can ensure that refrigeration system is normally run and ensures maximum Energy Efficiency Ratio, economize energy.
Specific works process is as follows:
First, compressor 7 sucks the low-temperature low-pressure refrigerant steam from direct-expansion coil 4, carries out the superheated steam compressing rear discharge HTHP; Secondly, the cold-producing medium of HTHP enters condenser coil 9, carries out heat exchange, the heat discharged is passed to air, make gaseous refrigerant be condensed into highly pressurised liquid in condensation process by the forced ventilation of condenser fan 8 and the lower surrounding air of temperature; Again, highly pressurised liquid flows through reservoir 12, and passes through the dry filter of device for drying and filtering 13, becomes the liquid refrigerant of low-temp low-pressure after expansion valve 6 reducing pressure by regulating flow; Then, the liquid refrigerant of low-temp low-pressure enters direct-expansion coil 4; Finally, in direct-evaporation-type coil pipe 4, the cold-producing medium of low-temp low-pressure will carry out exchange heat with surrounding air, refrigerant liquid generating gasification, becomes steam after absorbing the heat of surrounding air, and the air after cooling is delivered directly to the occasion needing refrigeration after warming and humidifying, thus reach refrigeration object, refrigerant vapour after gasification will be inhaled into compressor 7 again, so circulate, and reach refrigeration object.
This kind of year round cooling type direct-evaporation-type unitary air handling unit, automatically can regulate air quantity with variation of ambient temperature, not only save energy, also can make the operation that unit safety is stable, reach the object of year round cooling.
Above-mentioned detailed description of the invention is only concrete case of the present utility model, be not restriction the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent implementations of equivalent variations.But every do not depart from the prerequisite of the utility model know-why under, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present utility model, all should fall into scope of patent protection of the present utility model.
Claims (4)
1. a year round cooling type direct-evaporation-type unitary air handling unit, it is characterized in that: comprise the direct-expansion coil (4) and expansion valve (6) that are positioned at indoor cabinet and the compressor (7) being positioned at outdoor cabinet, condenser fan (8), condenser coil (9), fan governor (10), temperature sensor (11), reservoir (12) and device for drying and filtering (13), described indoor cabinet is connected by pipeline with outdoor cabinet;
The exhaust outlet of described compressor (7) connects condenser coil (9), reservoir (12), device for drying and filtering (13), expansion valve (6) and direct-expansion coil (4) in turn, the other end of described direct-expansion coil (4) is connected with the air entry of described compressor (7), forms complete refrigerating circuit;
Described temperature sensor (11) is connected with the signal input part of fan governor (10), and the control output end of described fan governor (10) is connected with condenser fan (8), and described condenser fan (8) is installed on described condenser coil (9) top.
2. a kind of year round cooling type direct-evaporation-type unitary air handling unit as claimed in claim 1, is characterized in that: described direct-expansion coil (4) in-built cold-producing medium.
3. a kind of year round cooling type direct-evaporation-type unitary air handling unit as claimed in claim 2, is characterized in that: described indoor cabinet is connected by copper pipe with outdoor cabinet.
4. a kind of year round cooling type direct-evaporation-type unitary air handling unit as described in as arbitrary in claims 1 to 3, is characterized in that: described condenser fan (8) is driven by Brush-Less DC motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420695078.5U CN204227617U (en) | 2014-11-19 | 2014-11-19 | A kind of year round cooling type direct-evaporation-type unitary air handling unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420695078.5U CN204227617U (en) | 2014-11-19 | 2014-11-19 | A kind of year round cooling type direct-evaporation-type unitary air handling unit |
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| CN204227617U true CN204227617U (en) | 2015-03-25 |
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| CN201420695078.5U Active CN204227617U (en) | 2014-11-19 | 2014-11-19 | A kind of year round cooling type direct-evaporation-type unitary air handling unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225128A (en) * | 2016-08-31 | 2016-12-14 | 天津金轮自行车集团有限公司 | A kind of refrigeration equipment |
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2014
- 2014-11-19 CN CN201420695078.5U patent/CN204227617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225128A (en) * | 2016-08-31 | 2016-12-14 | 天津金轮自行车集团有限公司 | A kind of refrigeration equipment |
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