CN106705306B - The integrated operating system of domestic air conditioner and refrigerator - Google Patents
The integrated operating system of domestic air conditioner and refrigerator Download PDFInfo
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- CN106705306B CN106705306B CN201710023820.6A CN201710023820A CN106705306B CN 106705306 B CN106705306 B CN 106705306B CN 201710023820 A CN201710023820 A CN 201710023820A CN 106705306 B CN106705306 B CN 106705306B
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- convection
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
Abstract
The integrated operating system of domestic air conditioner and refrigerator, the refrigeration duty of refrigerator is set not to be transmitted to room air in condenser, but it is directly transmitted to the refrigerant of air-conditioning, i.e. the refrigerant of air-conditioning first exchanges heat with room air in evaporator, take away indoor refrigeration duty, it exchanges heat again with the condenser of refrigerator, take away the refrigeration duty of refrigerator, in this way, the refrigeration duty of refrigerator directly carries row to outdoor from the refrigerant of air-conditioning, not but not cause indoor additional refrigeration duty, and since this partial heat is without room air, it is directly transmitted to air-conditioning refrigerant, increase heat transfer temperature difference, so that the efficiency of refrigerator is substantially improved.Additionally, due to this partial heat air-conditioning refrigerant is overheated, air-conditioner efficiency can be improved, so that the performance of the two obtains fully optimized.
Description
Technical field
The present invention relates to a kind of integrated operating systems of refrigeration system, and in particular to a kind of domestic air conditioner and refrigerator
Integrated operating system.
Background technique
Modern refrigeration system largely has been realized in large size in the either relatively high place waited in some public arenas
Efficient refrigeration system, but in household house, in terms of especially common residential houses, due to individual needs difference and
The factors such as the limitation of economy, most of user still select the lower Domestic separating air conditioner of refrigerating efficiency and electric ice
Case wishes to improve running efficiency of system in the industry, realizes energy-saving and environment-friendly target for this problem.
The refrigeration modes of present air-conditioning, typically make room air cool down, then in decontamination chamber by way of convection current
Space refrigeration duty, this air conditioner refrigerating mode refrigerating capacity is larger, but is detrimental to build the living environment of comfort, studies table
Bright, under the conditions of comfort, the net quantity of heat that human body generates distributes by a certain percentage, wherein the total heat dissipation capacity of heat loss through radiation Zhan
45%, evaporative heat loss accounts for 25%, and heat loss through convection accounts for 30%, it can be seen that, radiation heat transfer is during the entire process of human-body radiating
Very important effect is played, and correlative study and experiment show that, relative to heat convection, radiation heat transfer is on comfort
There is very big advantage.
And traditional refrigerator is that refrigerant absorbs heat from freezing chamber and refrigerating chamber, then passes through compressor, refrigerant becomes high
It calms the anger body, then by condenser to interior space heat release, this partial heat is then transformed into indoor refrigeration duty, then by air-conditioning system
It is cold, this partial heat and other indoor refrigeration dutys are sent in outside atmosphere, it is in this process, cold negative caused by refrigerator
The refrigeration cycle that lotus first passes through refrigerator is transmitted to room air, then is transmitted to air-conditioning refrigerant by room air, finally by air-conditioning
Refrigeration cycle is arranged to outdoor.Such air-conditioning and refrigerator isolated operation system, during heat transfer, due to have passed through room
Interior air conducts heat this link, so not only cause additional refrigeration duty to the interior space, and makes condenser for refrigerator and empty
Adjust heat transfer temperature difference of the evaporator when transmitting this partial heat smaller, heat transfer efficiency is lower, and then leads to the effect of refrigerator and air-conditioning
Rate all declines.This is defect existing for traditional isolated operation system.
Summary of the invention
The purpose of the present invention is to provide a kind of using radiation refrigeration in such a way that conventional convection refrigeration combines, and raising is empty
Comfort is adjusted, the uniformity of indoor air temperature is improved, thus the domestic air conditioner for optimizing entire Performance for Air Conditioning Systems
With the integrated operating system of refrigerator.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: including refrigerator body and be arranged in refrigerator body
Condenser for refrigerator by wall side is provided with the A/C evaporator of air inlet and air outlet in other sides of refrigerator body,
The A/C evaporator is four layers, and innermost layer is to be close to refrigerator body to be arranged in one layer of refrigerator as heat convection plate,
One layer of outermost is radiant panel, after fin tube type convection recuperator and radiant panel are provided between heat convection plate and radiant panel
Convection recuperator, by the condensed refrigerant line docile of air-conditioning condenser on the inner wall of radiant panel, after being then passed through radiant panel
Convection recuperator, after fin tube type convection recuperator docile on the outer wall of heat convection plate, A/C evaporator outlet with it is empty
The pipeline for adjusting compressor to be connected is set as sleeve type structure, and condenser for refrigerator passes through the sleeve type structure, and in refrigerator body
Upper end centrifugal fan is installed.
The refrigerator body uses cylindrical shape.
The space top between convection recuperator after the radiant panel and radiant panel uses sealing structure with bottom.
The present invention improves the domestic air conditioning and refrigerator of traditional isolated operation, devises domestic air conditioner and electricity
The integrated operating system of refrigerator, makes the refrigeration duty of refrigerator not be transmitted to room air in condenser, but is directly transmitted to air-conditioning
Refrigerant, i.e., the refrigerant of air-conditioning in evaporator first with room air exchange heat, take away indoor refrigeration duty, then cold with refrigerator
Condenser heat exchange, takes away the refrigeration duty of refrigerator, in this way, the refrigeration duty of refrigerator directly carries row to outdoor, no from the refrigerant of air-conditioning
But not indoor additional refrigeration duty is caused, and since this partial heat is without room air, is directly transmitted to air conditioner refrigerating
Agent increases heat transfer temperature difference, so that the efficiency of refrigerator is substantially improved.Make air-conditioning refrigerant additionally, due to this partial heat
Overheat, can be improved air-conditioner efficiency, so that the performance of the two obtains fully optimized.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of A/C evaporator 4 of the present invention；
Fig. 3 is the cross-sectional view of refrigerator body 1 of the present invention.
Specific embodiment
Xia Mianjiehefutuduibenfamingjiegouyuanlihegongzuoyuanlizuojinyibuxiangxishuoming.
Referring to Fig. 1,2,3, the present invention include cylindrical shape refrigerator body 1 and setting in refrigerator body 1 by wall one
The condenser for refrigerator 3 of side is provided with the A/C evaporator 4 of air inlet and air outlet in other sides of refrigerator body 1, described
A/C evaporator 4 be four layers, innermost layer is to be close to refrigerator body 1 to be arranged in one layer of refrigerator for heat convection plate 6, most
One layer of outside is radiant panel 9, after fin tube type convection recuperator 7 and radiant panel are provided between heat convection plate 6 and radiant panel 9
Convection recuperator 8 be then passed through radiation by the condensed refrigerant line docile of air-conditioning condenser 2 on the inner wall of radiant panel 9
Docile is on the outer wall of heat convection plate 6 after convection recuperator 8, fin tube type convection recuperator 7 after plate, radiant panel 9 and spoke
The space top between convection recuperator 8 after penetrating plate uses sealing structure, the outlet of A/C evaporator 4 and compressor of air conditioner with bottom
The pipeline being connected is set as sleeve type structure 5, and condenser for refrigerator 3 passes through the sleeve type structure 5, and in the upper of refrigerator body 1
End is equipped with centrifugal fan 10.
Referring to Fig. 1, refrigerator refrigerant of the invention directly by heat be transmitted to the air-conditioning refrigerant after air heat-exchange, mainly
The efficiency of refrigerator can be improved in terms of following two:
1) from the point of view of heat transfer temperature difference, in conventional refrigerator and air-conditioning isolated operation system, the diabatic process of refrigerator refrigeration duty are as follows:
Condenser for refrigerator → room air → air-conditioning refrigerant, the condensation temperature of refrigerator are generally 45 DEG C, and indoor air temperature is 27 DEG C,
The evaporator outlet temperature of air-conditioning refrigerant is 15 DEG C, that is to say, that in such systems, the first time of refrigerator refrigeration duty conducts heat
The temperature difference is (45-27)=18 DEG C, and second of heat transfer temperature difference is (27-15)=12 DEG C, and heat transfer temperature difference is smaller twice, and improved
The diabatic process of system, refrigerator refrigeration duty is condenser for refrigerator → air-conditioning refrigerant, removes the heat transfer of room air, heat transfer temperature difference
(45-15)=30 DEG C is increased to, the heat exchange efficiency of condenser for refrigerator is improved.
2) from the point of view of the coefficient of heat transfer, present condenser for refrigerator the changing by free convection that be all room air with condenser
Hot mode exchanges heat, and efficiency is lower, and uses double pipe heat exchanger, makes refrigerator refrigerant and air-conditioning refrigerant is directly forced pair
Stream heat exchange, the coefficient of heat transfer greatly improve, and can improve the efficiency of refrigerator well.
Air-conditioning exchanges heat in this way, can also be improved efficiency.Air-conditioning refrigerant is typically now using environmental protection system
Under the operating condition of domestic air conditioning, using overheat, refrigerating efficiency can be improved in cryogen R410A, this refrigerant.Cause
This, using new integrated operating system, air-conditioning refrigerant after conveying air heat-exchange again with the refrigerant in condenser for refrigerator
Heat exchange is realized air-conditioning refrigerant using refrigerator condensation heat and is overheated, the refrigerating efficiency of air-conditioning can be allowed to be effectively improved.
From operation logic, the raising of the efficiency of refrigerator and air-conditioning can be realized, to reach and realize energy-efficient mesh
's.
Front is described the operation logic of entire creative design system, and elaborates its reasonability, but in reality
In border production and application process, also corresponding change is made with the external form of refrigerator and its evaporator and condenser to air-conditioning
Into not only new system being allowed to become more efficient and rational in this way, moreover it is possible to become the temperature in entire room uniformly, and improve
The comfort of air-conditioning cooling supply.
The shape of refrigerator is transformed: by original cuboid appearance improvement being cylindrical shape by refrigerator, is in addition condensed
Device is arranged to the outside that double pipe heat exchanger is arranged in whole system, and other equipment do not change, and the purpose designed in this way is main
It is the evaporator in order to be conducive to arrange air-conditioning, reduces occupied area, and improve the comfort of air-conditioning cooling supply.
The arrangement of A/C evaporator: traditional fin tube type heat convection evaporator is arranged in external in refrigerator, refrigerator
Centrifugal fan is arranged in top, the negative pressure generated using centrifugal fan 10, sucks room air from the lower part of heat exchanger, makes room
Interior air and air-conditioning refrigerant carry out heat convection, are then sent into interior from the air outlet on top, and in fin tube type convection current
The outside of heat exchanging evaporator, that is, in the outermost layer of whole system, radiant panel is set, carries out radiation system using its outer surface
It is cold, to radiation refrigeration reasonably be combined with convection current cooling supply, refrigeration duty in decontamination chamber, create comfortable living environment referring to
Fig. 2,
In the process of running, refrigerant exchanges heat with outermost radiant panel first, it is made to drop to certain temperature, from
And radiation refrigeration is carried out to the interior space, the fin tube type heat convection that then refrigerant after heat exchange passes through inner layer again steams
Device is sent out, is cooled down to the room air of blower sucking, the refrigerant after at this moment exchanging heat leads to double pipe heat exchanger again and takes away ice
Case refrigeration duty realizes overheat, after compressor boosts, finally leads to outdoor condenser, realizes the refrigeration to the interior space.
Referring to fig. 2, A/C evaporator is set on fridge exterior face, is divided into four layers, most one layer of the inside, that is, be close to refrigerator
One layer be heat convection plate, it is arranged in refrigerator, while abutting with the copper pipe on central fins pipe heat exchanger, is making
When cryogen flows through copper pipe, surface temperature is reduced, and blower sucks room air from bottom, thus to air cooling.Followed by
Fin-tube heat exchanger, then be one layer be outward heat convection plate, this three layers, all by heat convection, provide cooling capacity, realize room
Interior space refrigeration, one layer of outermost is radiant panel, and refrigerant firstly flows through its surface, is preferably minimized its temperature, and then its is outer
Again to interior space radiation refrigeration, space top and bottom between radiant panel and heat convection plate thereafter are sealings on surface,
That is room air cannot be introduced into, and mention here there is no heat convection the purpose for the arrangement is that keeping radiation refrigeration amount larger
It is high-comfort.
Referring to Fig. 3 because refrigerator is typically all to be placed against the wall to set, the area of radiant panel we be only set as outermost layer table
3/4ths of face, the top of radiant panel are arranged air outlet, the room air after cooling are equably sent into interior, by wall
It is not provided with radiant panel and air outlet on one side, air-conditioning refrigerant and condenser for refrigerator is arranged in the remaining a quarter area of outermost layer
The double pipe heat exchanger of heat exchange.
Space not only can be effectively utilized in the present invention, and can be improved the efficiency of whole system.Here to cylindrical body
The advantage of refrigerator is illustrated again: because air-conditioning draught fan is to be arranged on refrigerator top, and blower is circular, so refrigerator is set
It is set to cylinder, is not only able to arrange that A/C evaporator preferably, can more make air-supply local losses smaller, close air-flow relatively
Reason and evaporator heat exchange in addition, the air outlet on cylindrical surface can also make to blow more uniform realize that comfort is preferably lived ring
Border.
Theoretical calculation
From operation logic, the present invention has carried out theory analysis to whole system, demonstrates its reasonability and reliable
Property using theoretical calculation, illustrates this system completely and can satisfy common local-style dwelling houses to live in the following, from the angle of actual use
The requirement of residence user.
In this system, for refrigerator, its shape and condenser are only changed, so the refrigerating capacity on it influences not
Greatly, it can satisfy user's requirement, but for air-conditioning system, the present invention has re-started setting to its evaporator, therefore should
Examine whether its refrigerating capacity meets the requirements.
1, air-conditioning semen donors are calculated
A/C evaporator is by radiation heat exchange plate and the fin tube type convection recuperator (heat convection including being close to refrigerator
Convection recuperator after plate and radiant panel) composition, its structure is arranged below.
1. the structural planning of A/C evaporator
Refrigerator is sized such that 1.5 meters high, and diameter is 0.5 meter, and such size volume is not much different with common refrigerator, can
To meet user's requirement, in its surface layout fin-tube heat exchanger, heat-transfer pipe selects the copper pipe of φ 7.00mmx0.30mm, wing
Piece selects aluminum fin-stock, the fork row's arrangement of pipeline equilateral triangle, tube spacing s1=0.025m arranges distance s2=0.02165m, pipe outside diameter d0
=7.00x10-3M, bore di=0.0064m, fin thickness δf=0.18x10-3M, innermost layer heat exchanger plates and finned heat exchanger
Spacing of fin sf=9mm, finned heat exchanger and outer heat convection plate spacing are sf=9mm, radiation heat exchange plate with thereafter
Heat convection plate spacing is 9mm；
2. air-conditioning refrigerant and room air parameter
Air-conditioning refrigerant is chosen to be R410a, and evaporating temperature is 7 DEG C, it is known that the dry-bulb temperature of air is 27 DEG C, and refrigerant is first
By outermost radiation heat exchange plate, by heat exchange, refrigerant temperature becomes 9 DEG C, and the temperature of radiant panel is reduced to 10 DEG C, refrigeration
Agent passes through three layers next of convection current finned heat exchanger again, considers heat transfer temperature difference, the outer fin temperature of general heat convection pipe is tw=
12℃.Preselecting finned heat exchanger, speed is u windward0=2.00m/s calculates refrigerating capacity, temperature of inlet air t from air side1=
27 DEG C, outlet air temperature t2=22 DEG C, then the mean temperature of air be
3. calculating the quantity of heat convection
The refrigerating capacity of heat convection is calculated from air side, first calculates the convection transfer rate of air side.
Air is in tm=24.5 DEG C of physical property is ρm=1.187 DEG C, cp,m=1.005kJ/ (kgK),m2/s
Find out most leptoprosopy air velocityReynolds number
It according to Reynolds number and relevant information, looks into and takes correlation criterion relational expression, and consider the two-phase surface heat transfer of boiling in ducts
And fin efficiency, the heat transfer coefficient on the basis of outer surface is obtained as h0=35.5W/ (m2·s).Calculate entire heat exchanger heat exchange
Outer surface is S=9.76m2/ s, then convection current refrigerating capacity is Qd=h*S* (tm-tw)=35.5x9.76x (24.5-12)=4331W
=4.3kW.
4. calculating radiant panel heat exchange amount
When radiant panel is to interior space cooling supply, not only through the mode and each surface heat transfer in room of radiation, but also and room
Interior air is conducted heat by way of free convection, the refrigerating capacity Q of outermost layer radiant panelfFor Radiant exothermicity Q1With it is naturally right
Flow heat exchange amount Q2The sum of.
The radiation refrigeration amount of radiant panel unit area is
q1=5x10-8[(tp+273)4-(AUST+273)4]
T in formulapThe surface temperature of-Net long wave radiation plate, DEG C；
AUST-mean radiant temperature (weighted mean of indoor remaining surface in addition to radiant panel), DEG C；
Take tp=10 DEG C, AUST=27 DEG C, then q1=84.3W/ (m2·s)
The calculating of the free convection refrigerating capacity of radiant panel unit area is public using the experience of radiant wall refrigeration heat convection
Formula,
Convection current refrigerating capacity q2=2.42x | tp-ta|0.32(tp-ta)/H0.05
tpThe surface temperature of-Net long wave radiation plate, DEG C；
ta- indoor air temperature, DEG C；
H-radiant wall plate height, m；H=1.5m；
tp=10 DEG C, ta=27 DEG C, then q2=99.8W/ (m2·s)
The then refrigerating capacity q of radiant panel unit areaf=q1+q2=184.1W,
The area S of radiant panel2=1.96m2,
Qf=qf*S2=184.1x1.96=361W.
5. the overall refrigerating effect of whole system
To sum up, the total refrigerating capacity Q of whole system is finned-tube convection heat exchange amount QdWith radiant panel heat exchange amount QfThe sum of, Q=
Qd+Qf=4331W+361W=4692W, then the refrigerating capacity of whole system is 4692W.
2, calculated room refrigeration duty
Refrigerator is typically placed in parlor, so calculating the refrigeration duty in parlor, whether the refrigerating capacity that verifying system provides can
Meet the summer refrigeration duty requirement in room.
It looks into " practical heat supplying air conditioning design manual " and knows that general residential housing cold finger is designated as 80~120W/ ㎡.Therefore it is selected when estimating
Cold finger is designated as 100W/ ㎡.General parlor area is 40 ㎡.Then this parlor air-conditioning refrigeration duty is 4KW.
By calculating, the refrigerating capacity Q=Q of air-conditioning system offerd+Qf=4692W, and the refrigeration duty of room summer is 4KW,
The refrigerating capacity of air-conditioning is greater than room load, and therefore, which can satisfy the requirement of user, realize the function of refrigeration.
The present invention is by carrying out integrated operation, the system for realizing the following aspects for domestic air conditioner and refrigerator
Advantage:
1, by the improvement in terms of system structure, the heat transfer temperature difference and the coefficient of heat transfer of condenser for refrigerator are increased, thus
Improve the operational efficiency of refrigerator.Also, due to the evaporator superheat of air-conditioning, the operational efficiency of air-conditioning is also promoted.
2, this system using radiation refrigeration in such a way that conventional convection refrigeration combines, to the wind pushing form of traditional air conditioner into
Row improves, and improves the comfort of indoor environment, optimizes the performance of entire air-conditioning system.
Claims (2)
1. the integrated operating system of domestic air conditioner and refrigerator, it is characterised in that: exist including refrigerator body (1) and setting
Refrigerator body (1) leans on the condenser for refrigerator (3) of wall side, is provided with air inlet and outlet air in other sides of refrigerator body 1
The A/C evaporator (4) of mouth, the A/C evaporator (4) are four layers, and innermost layer is close to refrigerator body (1) and is arranged in refrigerator
One layer of surface is heat convection plate (6), and one layer of outermost is radiant panel (9), between heat convection plate (6) and radiant panel (9)
Convection recuperator (8) after being provided with fin tube type convection recuperator (7) and radiant panel, it is condensed by air-conditioning condenser (2)
Refrigerant line docile is on the inner wall of radiant panel (9), the convection recuperator (8) after being then passed through radiant panel, fin tube type convection current
For docile on the outer wall of heat convection plate (6), A/C evaporator 4 exports the pipe being connected with compressor of air conditioner to heat exchanger (7) afterwards
Road is set as sleeve type structure (5), and condenser for refrigerator (3) passes through the sleeve type structure (5), and in the upper end of refrigerator body (1)
It is equipped with centrifugal fan (10), the space top and bottom between convection recuperator (8) after the radiant panel (9) and radiant panel
Portion uses sealing structure.
2. the integrated operating system of domestic air conditioner according to claim 1 and refrigerator, it is characterised in that: described
Refrigerator body (1) uses cylindrical shape.
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| CN201710023820.6A CN106705306B (en) | 2017-01-13 | 2017-01-13 | The integrated operating system of domestic air conditioner and refrigerator |
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| CN201710023820.6A CN106705306B (en) | 2017-01-13 | 2017-01-13 | The integrated operating system of domestic air conditioner and refrigerator |
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| CN1536297A (en) * | 2003-04-08 | 2004-10-13 | Lg������ʽ���� | Defroster for heat exchanger and its mfg. method |
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| CN106705306A (en) | 2017-05-24 |
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