CN208075149U - Machine and constant temperature and humidity system in constant temperature and humidity - Google Patents
Machine and constant temperature and humidity system in constant temperature and humidity Download PDFInfo
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- CN208075149U CN208075149U CN201820483983.2U CN201820483983U CN208075149U CN 208075149 U CN208075149 U CN 208075149U CN 201820483983 U CN201820483983 U CN 201820483983U CN 208075149 U CN208075149 U CN 208075149U
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Abstract
The utility model discloses machine and constant temperature and humidity system in a kind of constant temperature and humidity, machine in the constant temperature and humidity, including：Wind turbine；First evaporator；Second evaporator, and second evaporator is arranged in parallel with the refrigerant compression cycle of the first evaporator machine in the constant temperature and humidity；First electric expansion valve is arranged in the refrigerant compression cycle of the machine in the constant temperature and humidity and is arranged with first evaporator series, and first electric expansion valve is used to control the cold medium flux in first evaporator.Two evaporators by being arranged in parallel by the utility model, wherein the first electric expansion valve is fully closed, is dehumidified by the second evaporator, and avoiding compressor raising frequency causes refrigerating capacity to increase, and the auxiliary heat of high-power electricity is effectively avoided to open not energy-efficient situation.
Description
Technical field
The utility model is related to thermostatic constant wet equipment technical fields, and in particular to machine and constant temperature and humidity in a kind of constant temperature and humidity
System.
Background technology
Constant temperature and humidity machine is one kind of commercial special air-conditioning units, there is national standard limitation in product development process, and with constant temperature
The constant temperature and humidity control of the air-conditioning or air-conditioning of constant humidity function is entirely different.
Air conditioner dehumidification principle is will to make the lower evaporator of wind excess temperature so that the temperature of the wind after heat exchange is less than dew point
Temperature, water vapor portion in such case leeward can condensation at liquid water droplet.For using the air-conditioning of conventional refrigerant, making
It generally can all dehumidify when cold, it is desirable to increase effect on moisture extraction, interior fan delivery can be increased or reduce evaporating temperature.For frequency conversion
Thermostatic and humidistatic air conditioning unit, when indoor environment has dehumidification, air-conditioner set (can generally be added by increasing compressor frequency
Big compressor height pressure difference is to reduce system low-voltage and evaporating temperature) and open big electric expansion valve step number (increase refrigerant circulation
Measure to reducing evaporating temperature) method dehumidify.
But constant temperature and humidity machine inner blower generally can all use alternating current generator, rotating speed non-adjustable.In the case that air quantity is constant
Dehumidifying can lead to a result：Compressor raising frequency can cause refrigerating capacity to improve, in the case that indoor load is constant, in order to maintain
Constant temperature and humidity needs to open the extra cold of the auxiliary heat counteracting of electricity, and which results in invalid energy consumptions.
Utility model content
The utility model discloses machine and constant temperature and humidity systems in a kind of constant temperature and humidity, solve existing constant temperature and humidity system
Because of air quantity constant the problem of will produce extra cold when dehumidifying.
One side according to the present utility model discloses machine in a kind of constant temperature and humidity, including：Wind turbine；First evaporator；
Second evaporator, and the refrigerant of second evaporator and the first evaporator machine in the constant temperature and humidity compresses in cycle
It is arranged in parallel；First electric expansion valve is arranged in the refrigerant compression cycle of the machine in the constant temperature and humidity and with described first
Evaporator series are arranged, and first electric expansion valve is used to control the cold medium flux in first evaporator.
Further, machine further includes return air inlet in the constant temperature and humidity, and first evaporator is located at described second and evaporates
Between device and the return air inlet.
Further, first evaporator is obliquely installed with second evaporator and forms V-structure.
Other side according to the present utility model, discloses a kind of constant temperature and humidity system, including refrigerant compression cycle and
Machine in above-mentioned constant temperature and humidity, the refrigerant compression cycle, including：Compressor；First heat exchange loop, first end and condenser
Connection, the second end of first heat exchange loop are connected to the air inlet of the compressor；Second heat exchange loop, and it is described
First heat exchange loop is in parallel；First evaporator of machine and first electric expansion valve setting exist in the constant temperature and humidity
On first heat exchange loop, and first electric expansion valve is located at the upstream of first evaporator；The constant temperature is permanent
Second evaporator of wet interior machine is arranged on second heat exchange loop.
The utility model utilizes the electronic expansion valve controls refrigerant of one of them by being arranged in parallel two evaporators
Uninterrupted, when indoor dehumidification demand is larger but indoor load is not high, unit enters dehumidifying enhancement mode, wherein the
One electric expansion valve is fully closed, is dehumidified by the second evaporator, passes through the refrigerant of two evaporators originally, now only from the second evaporator
By this causes to increase by the refrigerant circulation of the second evaporator, can cause under evaporating temperature in the case that thermic load is certain
Drop is more advantageous to dehumidifying, while the first electric expansion valve is closed, and is only gone to complete refrigeration and dehumidifying, this feelings by the second evaporator
Condition, which is equivalent to, reduces disengagement area and air quantity, and do not return makes refrigerating capacity increase because of compressor raising frequency, so as to avoid by
Extra cold is generated because air quantity is constant in constant temperature and humidity machine, the auxiliary heat of high-power electricity is caused to open not energy-efficient situation.
Description of the drawings
Fig. 1 is the structural schematic diagram of machine in the constant temperature and humidity of the utility model embodiment；
Fig. 2 is the fundamental diagram of the constant temperature and humidity system of the utility model embodiment；
Fig. 3 is the control method work flow diagram of the constant temperature and humidity system of the utility model embodiment；
Fig. 4 is the control method work flow diagram of the constant temperature and humidity system of another embodiment of the utility model；
Legend：1, wind turbine；2, the first evaporator；3, the second evaporator；4, the first electric expansion valve；5, the second electronic expansion
Valve；6, return air inlet；7, the first auxiliary thermal of electricity；8, the second auxiliary thermal of electricity；9, compressor；10, the first heat exchange loop；11,
Second heat exchange loop；12, temperature sensor.
Specific implementation mode
The utility model is described further with reference to embodiment, but is not limited to the content on specification.
The utility model discloses machines in a kind of constant temperature and humidity, including：Wind turbine 1, the first evaporator 2,3 and of the second evaporator
First electric expansion valve 4, wind turbine 1 are arranged in constant temperature and humidity at the air outlet in the air duct of machine；First evaporator 2 is arranged in wind
Between machine 1 and the return air inlet in air duct 6；Second evaporator 3 is arranged between wind turbine 1 and return air inlet 6, and the second evaporator 3 and the
It is arranged in parallel in the refrigerant compression cycle of one machine in constant temperature and humidity of evaporator 2；First electric expansion valve 4 is arranged in constant temperature and humidity
It is arranged in series in the refrigerant compression cycle of interior machine and with the first evaporator 2, the first electric expansion valve 4 is for controlling the first evaporation
Cold medium flux in device 2.
By being arranged in parallel two evaporators, and the electronic expansion valve controls cold medium flux size of one of them is utilized,
When indoor dehumidification demand is larger but indoor load is not high, unit enters dehumidifying enhancement mode, wherein the first electronic expansion
Valve 4 is fully closed, is dehumidified by the second evaporator 3, passes through the refrigerant of two evaporators originally, only passes through now from the second evaporator 3, this
Cause to increase by the refrigerant circulation of the second evaporator 3, evaporating temperature can be caused to decline in the case that thermic load is certain, more had
Conducive to dehumidifying, while the first electric expansion valve 4 is closed, and only goes to complete to freeze by the second evaporator 3 and dehumidifying, such case are suitable
In reduce disengagement area and heat exchange air quantity, do not return makes refrigerating capacity increase because of compressor raising frequency, so as to avoid due to
Constant temperature and humidity fan delivery is constant to will produce extra cold, and the auxiliary heat of high-power electricity is caused to open not energy-efficient situation.
Moreover, in the case where the not high auxiliary thermal power of indoor electric of thermic load is not high, to ensure effect on moisture extraction, may lead
Refrigerating capacity is excessive, and the auxiliary thermogenetic shortage of heat of electricity causes indoor environment temperature out of control to offset.By by two evaporators simultaneously
Connection setting, and using the electronic expansion valve controls cold medium flux sizes of one of them, only by the second evaporator 3 go to complete refrigeration and
Dehumidifying, such case, which is equivalent to, reduces disengagement area and air quantity, the phenomenon that avoid the occurrence of temperature control.
In the above-described embodiments, machine further includes in constant temperature and humidity：Second electric expansion valve 5, the setting of the second electric expansion valve 5
It is arranged in series in constant temperature and humidity in the refrigerant compression cycle of machine and with the second evaporator 3, for controlling in the second evaporator 3
Cold medium flux, between the second evaporator 3 and return air inlet 6, the first evaporator 2 inclines the first evaporator 2 with the second evaporator 3
Tiltedly it is arranged and forms V-structure.By individually being controlled by electric expansion valve, when indoor environment is larger to dehumidification but hot negative
When lotus is not high, unit can only be dehumidified using the second evaporator 3 by the cold medium flux in electronic expansion valve controls evaporator,
Without causing refrigerating capacity to increase, to effectively avoid indoor temperature out of control or energy consumption increase.Moreover, because the first evaporator
2 between the second evaporator 3 and return air inlet 6, and the first evaporator 2 and the second evaporator 3 are formed v-angle structure, from
And wind field distribution is had adjusted, the return air entered from return air inlet 6 is after the first evaporator 2 close to return air inlet 6, air quantity and wind speed
All opposite to reduce, to make air quantity and demeanour by the second evaporator 3 also reduce relatively, the reduction of air quantity can prevent heat exchange amount
Excessive, wind speed attenuating, which can be more advantageous to, removes Water vapor condensation in return air, to make constant temperature and humidity machine improve effect on moisture extraction
Meanwhile extra cold is not will produce also.
In the above-described embodiments, wet machine further includes in constant temperature perseverance：The auxiliary 7 and second electric auxiliary thermal 8 of thermal of first electricity, the
The one auxiliary thermal 7 of electricity is arranged between the first evaporator 2 and wind turbine 1；The setting of second electricity auxiliary thermal 8 the second evaporator 3 with
Between wind turbine 1.Temperature control is may further ensure that by the auxiliary thermal of electricity.
Another aspect according to the present utility model, discloses a kind of constant temperature and humidity system, including refrigerant compression cycle and on
Machine in the constant temperature and humidity stated, refrigerant compression cycle include：Compressor 9, the first heat exchange loop 10 and the second heat exchange loop 11,
The first end of first heat exchange loop 10 is connect with condenser, the air inlet of the second end and compressor 9 of the first heat exchange loop 10
Mouth connection；Second heat exchange loop 11 is in parallel with the first heat exchange loop 10；First evaporator 2 and first of machine in constant temperature and humidity
Electric expansion valve 4 is arranged on the first heat exchange loop 10, and the first electric expansion valve 4 is located at the upstream of the first evaporator 2；It is permanent
The second evaporator 3 of machine is arranged on the second heat exchange loop 11 in constant temperature and humidity.By the way that two heat exchange loops in parallel are arranged,
And two evaporators are separately positioned on two heat exchange loops, and using in the one of evaporator of electronic expansion valve controls
Cold medium flux size, when indoor dehumidification demand is strong but indoor load is not high, unit enters dehumidifying enhancement mode,
In, the first electric expansion valve 4 of 2 upstream of the first evaporator is fully closed, is dehumidified by the second evaporator 3, passes through two evaporators originally
Refrigerant, only pass through now from the second evaporator 3, this causes by the second heat exchange loop 11 where the second evaporator 3
Refrigerant circulation increases, and evaporating temperature can be caused to decline in the case that thermic load is certain, be more advantageous to dehumidifying, while the first electronics
Expansion valve 4 is closed, and only goes to complete to freeze and dehumidify by the second evaporator 3, such case, which is equivalent to, reduces disengagement area and wind
Amount, therefore, avoiding compressor raising frequency causes refrigerating capacity to increase, and the auxiliary heat of high-power electricity is effectively avoided to open not energy-efficient feelings
Condition.
Another aspect according to the present utility model discloses a kind of control method of constant temperature and humidity system, constant temperature and humidity system
System is above-mentioned constant temperature and humidity system, and the second electric expansion valve 5, the second electric expansion valve are provided on the second heat exchange loop 11
5 for controlling the cold medium flux size in the second evaporator 3, and control method includes：
Step S10：Obtain environment temperature TID-Amb, obtain set temperature TID-Tar, obtain ambient humidity RHID-Amb, acquisition sets
Determine humidity RHID-Tar；
Step S20：According to environment temperature TID-Amb, set temperature TID-Tar, ambient humidity RHID-Amb, setting humidity
RHID-Tar, judge whether constant temperature and humidity system enters dehumidifying enhancement mode.
In the above-described embodiments, step S20 includes the following steps：
Step S21：Judge environment temperature TID-AmbWith ambient humidity RHID-AmbWhether preset range is in；
Step S22：Work as TID-Amb< TID-Tar+Tdeviation, and RHID-Amb> RHID-TarWhen, control constant temperature and humidity system into
Enter the enhancement mode that dehumidifies；
Step S23：Work as TID-Amb≥TID-Tar+Tdeviation+ 1 or RHID-Amb< RHID-TarWhen, control constant temperature and humidity system is moved back
Go out the enhancement mode that dehumidifies；
Wherein, TdeviationFor temperature accuracy.
In the above-described embodiments, when constant temperature and humidity system is under the enhancement mode that dehumidifies, 9 raising frequency of compressor controls the first electricity
The aperture of sub- expansion valve 4 gradually turns down, and the aperture of the second electric expansion valve 5 is constant.
In the above-described embodiments, the aperture of the first electric expansion valve 4 is controlled by following equation：
Wherein,
EXVID-TarFor electric expansion valve target aperture, EXVID-PntFor the current aperture of electric expansion valve, TID-AmbFor indoor ring
Border temperature, TID-TarFor indoor set temperature.
In the above-described embodiments, when thermostatic constant wet control system exits dehumidifying enhancement mode, the first electronic expansion is controlled
The aperture of valve 4 gradually increases, and the aperture of the second electric expansion valve 5 is constant.
By the above method, since the condition of dehumidifying enhancement mode is TID-Amb< TID-Tar+Tdeviation, so TID-Amb-
TID-Tar+TdeviationIt is a negative, so EXVID-Tar=EXVID-Pnt+ negative, the first electric expansion valve 4 can turn down always until
0, the first heat exchange loop 10 is closed, this leads to the refrigerant circulation by the second heat exchange loop 11 where the second evaporator 3
Amount increases, and evaporating temperature can be caused to decline in the case that thermic load is certain, be more advantageous to dehumidifying, simultaneously because the first electronic expansion
Valve 4 is closed, and only goes to complete to freeze and dehumidify by the second evaporator 3, and such case, which is equivalent to, reduces heat exchange area and air quantity, because
This, avoiding compressor raising frequency causes refrigerating capacity to increase, and the auxiliary heat of high-power electricity is effectively avoided to open not energy-efficient situation.
Since the first electric expansion valve 4 can be closed under dehumidifying enhancement mode, the refrigerant by another second evaporator 3 is caused to follow
Circular rector increases, and the refrigerant inlet pipe temperature of the second evaporator 3 can reduce on the basis of the original, when the refrigerant inlet pipe of the second evaporator
When temperature is less than -1 DEG C, evaporator can evaporate not exclusively in the case that thermic load is constant indoors, and compressor is caused largely to return liquid,
And general constant temperature and humidity system is both provided with anti-freeze protection, does not only result in refrigerating efficiency reduction, and system operation is unstable.
To solve the above-mentioned problems, the utility model discloses another embodiments, and this embodiment disclose a kind of constant temperature
The control method of constant humidity system, constant temperature and humidity system are above-mentioned constant temperature and humidity system, are provided on the second heat exchange loop 11
Second electric expansion valve 5, the second electric expansion valve 5 are used to control the cold medium flux size in the second evaporator 3, the second evaporator
Temperature sensor 12 is provided on 3 refrigerant inlet pipeline, temperature sensor 12 is used to obtain the refrigerant inlet pipe of the second evaporator 3
Temperature, control method include：
Step S10：Obtain environment temperature TID-Amb, obtain set temperature TID-Tar, obtain ambient humidity RHID-Amb, acquisition sets
Determine humidity RHID-Tar, obtain the refrigerant inlet pipe temperature T of the second evaporator 3ID-In；
Step S20：According to environment temperature TID-Amb, set temperature TID-Tar, ambient humidity RHID-Amb, setting humidity
RHID-Tar, refrigerant inlet pipe temperature TID-In, judge whether constant temperature and humidity system enters dehumidifying enhancement mode.
In the above-described embodiments, step S20 includes the following steps：
Step S21：Judge environment temperature TID-Amb, ambient humidity RHID-Amb, refrigerant inlet pipe temperature TID-InWhether in default
Range；
Step S22：Meet T when simultaneouslyID-Amb< TID-Tar+Tdeviation、RHID-Amb> RHID-Tar、TID-InWhen > A conditions,
Control constant temperature and humidity system enters dehumidifying enhancement mode；
Step S23：When meeting TID-Amb≥TID-Tar+Tdeviation+1≥TID-Amb≥TID-Tar+Tdeviation+1、RHID-Amb<
RHID-TarOr TID-InWhen either condition in≤B, control constant temperature and humidity system exits dehumidifying enhancement mode；
Wherein, TdeviationFor temperature accuracy, generally 0.5 DEG C, A is default safe temperature, and B is default supercooling temperature.
In the above-described embodiments, the value range of A is 3 DEG C~5 DEG C.
In the above-described embodiments, the value range of B is 1 DEG C~3 DEG C.
In the above-described embodiments, in step S22, when constant temperature and humidity system is under the enhancement mode that dehumidifies, compressor 9 works
Frequency gradually increases, and the aperture of the first electric expansion valve 4 gradually turns down, and the aperture of the second electric expansion valve 5 is constant.
In the above-described embodiments, the aperture of the first electric expansion valve 4 is controlled by following equation：
Wherein,
EXVID-TarFor the first electric expansion valve target aperture, EXVID-PntFor the current aperture of the first electric expansion valve, TID-Amb
For indoor environment temperature, TID-TarFor indoor set temperature.
In the above-described embodiments, in step S23, when thermostatic constant wet control system exits dehumidifying enhancement mode, first
The aperture of electric expansion valve 4 gradually increases to normally, and the aperture of the second electric expansion valve 5 is constant.
By the above method, cause refrigerating capacity to increase avoiding compressor raising frequency, effectively avoids the high-power auxiliary heat of electricity
Open not energy-efficient situation.Simultaneously as the setting temperature sensor on 3 inlet pipe of the second evaporator, is steamed by detection second
It sends out device inlet pipe temperature and as control condition, causes anti-freeze to be protected so as to prevent the enhancement mode because entrance dehumidifies
Shield ensures system operation reliability while improving dehumidifying drop ability.
Obviously, the above embodiment of the utility model is only intended to clearly illustrate the utility model example,
And it is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, it is stated upper
It can also be made other variations or changes in different ways on the basis of bright.Here all embodiments can not be given thoroughly
It lifts.It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
Protection domain row.
Claims (4)
1. machine in a kind of constant temperature and humidity, which is characterized in that including：
Wind turbine (1)；
First evaporator (2)；
Second evaporator (3), and second evaporator (3) and the first evaporator (2) machine in the constant temperature and humidity
It is arranged in parallel in refrigerant compression cycle；
First electric expansion valve (4) is arranged in the refrigerant compression cycle of the machine in the constant temperature and humidity and is steamed with described first
Hair device (2) is arranged in series, and first electric expansion valve (4) is used to control the cold medium flux in first evaporator (2).
2. machine in constant temperature and humidity according to claim 1, which is characterized in that machine further includes return air inlet in the constant temperature and humidity
(6), first evaporator (2) is between second evaporator (3) and the return air inlet (6).
3. machine in constant temperature and humidity according to claim 2, which is characterized in that first evaporator (2) and described second
Evaporator (3) is obliquely installed and forms V-structure.
4. a kind of constant temperature and humidity system, which is characterized in that permanent including refrigerant compression cycle and claim 1-3 any one of them
Machine in constant temperature and humidity, the refrigerant compression cycle, including：
Compressor (9)；
First heat exchange loop (10), first end is connect with condenser, the second end of first heat exchange loop (10) and institute
State the air inlet connection of compressor (9)；
Second heat exchange loop (11), it is in parallel with the first heat exchange loop (10)；
First evaporator (2) of machine and first electric expansion valve (4) are arranged described first in the constant temperature and humidity
On heat exchange loop (10), and first electric expansion valve (4) is located at the upstream of first evaporator (2)；
Second evaporator (3) of machine is arranged on second heat exchange loop (11) in the constant temperature and humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820483983.2U CN208075149U (en) | 2018-04-04 | 2018-04-04 | Machine and constant temperature and humidity system in constant temperature and humidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820483983.2U CN208075149U (en) | 2018-04-04 | 2018-04-04 | Machine and constant temperature and humidity system in constant temperature and humidity |
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| CN208075149U true CN208075149U (en) | 2018-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518736A (en) * | 2018-04-04 | 2018-09-11 | 珠海格力电器股份有限公司 | Machine, constant temperature and humidity system and its control method in constant temperature and humidity |
-
2018
- 2018-04-04 CN CN201820483983.2U patent/CN208075149U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518736A (en) * | 2018-04-04 | 2018-09-11 | 珠海格力电器股份有限公司 | Machine, constant temperature and humidity system and its control method in constant temperature and humidity |
| WO2019192210A1 (en) * | 2018-04-04 | 2019-10-10 | 珠海格力电器股份有限公司 | Constant-temperature and constant-humidity indoor unit, constant-temperature and constant-humidity system, and control method therefor |
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