CN203053002U - Heat-accumulation water tank of air source heat pump water heater - Google Patents

Heat-accumulation water tank of air source heat pump water heater Download PDF

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Publication number
CN203053002U
CN203053002U CN 201220668905 CN201220668905U CN203053002U CN 203053002 U CN203053002 U CN 203053002U CN 201220668905 CN201220668905 CN 201220668905 CN 201220668905 U CN201220668905 U CN 201220668905U CN 203053002 U CN203053002 U CN 203053002U
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CN
China
Prior art keywords
water
tank
heat
air source
water tank
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Expired - Fee Related
Application number
CN 201220668905
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Chinese (zh)
Inventor
王沣浩
王志华
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN 201220668905 priority Critical patent/CN203053002U/en
Application granted granted Critical
Publication of CN203053002U publication Critical patent/CN203053002U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a heat-accumulation water tank of an air source heat pump water heater. The heat-accumulation water tank of the air source heat pump water heater comprises a water-tank outer shell and a water-tank inner container, wherein a heat-preservation layer is installed between the water-tank outer shell and the water-tank inner container, a condensing coil is wound on the outer wall of the water-tank inner container, a cellular fin is installed on the periphery of the inner wall of the water-tank inner container, and a radiation cylinder installed along the axial direction of the water tank is installed at the center of the water-tank inner container. The cellular fin is installed to enlarge the heat exchange area and improve heat exchange capability. The radiation cylinder installed inside the water tank along the axial direction conducts radiation heat exchange with the cellular fin and conducts convective heat exchange with the periphery simultaneously, so that temperature stratification is reduced, absorption of heat released by a condenser is benefited, and performance of the water heater is improved.

Description

A kind of air source hot pump water heater hot water storage tank
Technical field
The utility model belongs to field of water heaters, relates to air source hot pump water heater, particularly a kind of air source hot pump water heater hot water storage tank.
Background technology
Along with the increase day by day of energy resource consumption, saved energy and reduce the cost into one of alleviation energy-intensive effective means, also paid attention to by people day by day as the water heater of energy-consuming product is how energy-conservation.After traditional electric heater, gas heater, solar water heater, as the 4th generation water heater air source hot pump water heater, have characteristics such as energy-efficient, safe and convenient to use, round-the-clock running, become a dazzling star in water heater market rapidly, be subjected to people's attention.
For Teat pump boiler, the effect of condenser be the transfer of heat of heat that heat pump is absorbed from air and compressor consumption in hot water, simultaneously refrigerant is had the condensation of gas of high temperature to become liquid.If condenser can not be in time smoothly with the transfer of heat of refrigerant in water, the performance of heat pump will reduce even cisco unity malfunction.Therefore, as the water tank of Teat pump boiler critical piece, two important effects being arranged, is the press-bearing water tank of a water storage, is again the condenser of heat pump, is undertaking the task of the high temperature refrigerant Steam Heating hot water of discharging with compressor.Therefore, the quality of water tank is directly determining the service life of water heater, and simultaneously, the reasonability of waterbox design directly affects efficient, stability and the reliability of heat pump work.
At present, heat-pump water-heater water tank mainly contains inner coil pipe mode and two kinds of outer coil pipe modes on the market.The inner coil pipe mode, condensation copper pipe directly contacts with water, and the high temperature refrigerant that compressor is discharged flows in copper pipe, adds hot water in the hot-water cylinder by heating copper tube; Outer coil pipe mode, copper pipe does not contact with water, the high temperature refrigerant elder generation heating copper tube that compressor is discharged, copper pipe adds the hot-water cylinder outer wall, and water pot goes heat hot water again.
Compare with general air-conditioning, the Teat pump boiler condensation is residing to be a dynamic environment, its evaporating pressure, condensing pressure and heating power raise along with hot water temperature's rising, and hot water temperature's distribution has a significant impact the heating efficiency of air source hot pump water heater in the case.Under same outdoor environment temperature, rising along with water temperature in the water tank, condenser with reduce with the heat transfer temperature difference of outer courage, condensing pressure raises, delivery temperature raises, simultaneously, along with the prolongation of heat time heating time, thermal stratification increases gradually in the water tank, and the heat exchange effect weakens, finally cause the Teat pump boiler performance to descend, hindered applying of product.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of air source hot pump water heater hot water storage tank is provided.
For reaching above utility model purpose, the technical solution adopted in the utility model is as follows: comprise tank shell and be installed in the interior inner water tank of tank shell, tank shell is provided with hot water outlet and the cooling water inlet that is communicated with inner water tank, be wound with condenser coil on the outer wall of inner water tank, also be provided with the condensation-water drain that is communicated with condenser coil on the tank shell, on the inwall of inner water tank fin be installed.
Described fin is cellular fin.
Described inner water tank central authorities are equipped with the radiation cylinder that axially arranges along water tank.
Described radiation cylinder upper and lower opening and barrel have aperture.
Described radiation cylinder is shaggy cylinder.
Described radiation cylinder is installed in the inner water tank by support.
Be provided with heat-insulation layer between described tank shell and the inner water tank, heat-insulation layer is with condenser coil and inner water tank parcel.
Also be provided with the air bleeding valve that is communicated with inner water tank on the described tank shell.
Water heater hot water storage tank described in the utility model, inwall at inner water tank is equipped with fin, increased heat exchange area, improve heat exchange amount ability, made that the heat in the condenser coil imports in the water of water tank fast, improved heat transfer efficiency, guarantee the condenser coil pressure stability, avoid because of heat exchange weak effect between condenser coil and the water tank, can not be in time smoothly with the transfer of heat of refrigerant in water, cause the performance of heat pump to reduce even the problem of cisco unity malfunction.
Further, in the water tank radiation cylinder is installed vertically and cellular fin carries out radiation heat transfer, simultaneously with carry out heat convection on every side, reduced thermal stratification, be beneficial to the heat that absorptive condenser discharges, further improve the performance of water heater.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is the axial sectional structure schematic diagram of the utility model.
Accompanying drawing 3 tiltedly cuts open structural representation for the utility model.
Among the figure: 1-hot water outlet, 2-tank shell, 3-heat-insulation layer, 4-inner water tank, 5-cooling water inlet, 6-condenser coil, 7-air bleeding valve, 8-condensation-water drain, the cellular fin of 9-, 10-radiation cylinder, 11-support.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
As Fig. 1, shown in Figure 2, the utility model comprises tank shell 2 and inner water tank 4, be provided with heat-insulation layer 3 between tank shell 2 and the inner water tank 4, tank shell 2 is provided with the hot water outlet 1 that is communicated with inner water tank 4, cooling water inlet 5 and air bleeding valve 7, be wound with condenser coil 6 on the outer wall of inner water tank 4, heat-insulation layer 3 is with condenser coil 6 and inner water tank 4 parcels, also be provided with the condensation-water drain 8 that is communicated with condenser coil on the tank shell, the periphery of inner wall of inner water tank 4 is equipped with cellular fin 9, in inner water tank 4 central authorities the radiation cylinder 10 that axially arranges along water tank is installed, cylinder 10 is installed in the inner water tank 4 by support 11.
As shown in Figure 3, further, described radiation cylinder 10 upper and lower openings and barrel have aperture, and described radiation cylinder 10 is the full coarse cylinder of table.
Cold water enters inner water tank 4 through cold water inlet 5, the condenser coil 6 of high-temperature high-pressure medium through being wrapped in inner water tank 4 outer walls flows through, by heat convection heat is imported into and to heat cold water in the water tank, discharge for using from hot water outlet 1 cold water heating back, cold water continues to enter inner water tank, high-temperature high-pressure medium is condensed into condensed water and enters condenser coil again after pressurization, and the water in the cyclic heating water tank provides hot water continuously.
Principle of the present utility model is as follows:
When Teat pump boiler is worked, high-temperature high-pressure refrigerant enter condenser coil and inner water tank by heat conduction with the heat transferred inner water tank, inner bag and cold water heat cold water by heat convection, according to formula:
Φ=KFΔt
In the formula: Φ is the heat exchange amount in the unit interval;
K is heat transfer coefficient;
F is heat transfer area;
Δ t is the temperature difference of cold fluid and hot fluid.
As can be seen, increasing heat output can realize by improving heat transfer coefficient, enlarge heat transfer area and increasing three kinds of approach of heat transfer temperature difference.The heat-pump water-heater water tank that the utility model relates to is owing to designed cellular heat transmission fin at tank inner wall, one, each honeycomb hole of this cellular heat transmission fin is worked as the heat transfer fin that is Myself with the wall of all honeycomb holes around it, increased the heat transfer sheet area of water tank heat exchanger virtually, and do not increase its metal material consumption and influence its fluid passage, this integration honeycomb ceramics play certain intensive effect and strengthened single honeycomb hole exchange capability of heat, improved the coefficient of heat transfer of whole heat exchanger greatly.They are two years old, each honeycomb hole all is provided with the rifling indenture, and both sides rifling indenture swirl direction is reciprocal, will make like this two kinds of fluids when carrying out heat exchange each instantaneous all be reciprocal meet, this not only is very beneficial for exchange heat, and the effect of this form bead can finely prevent fluid fouling on the heat exchanger wall, played from souring.Its three, the honeycomb heat exchange fin can make the flow velocity of cross section of rate of flow of fluid direction convergent consistent, its disjunctor conjugation also can make the thermograde of flow velocity direction cross section reach identical, has perfect field synergy effect.
On the other hand, owing to the effect of fluid viscous force, making near near the fluid velocity the wall and reduce, is zero until the fluid velocity of being close to the wall place, i.e. flow boundary layer.Because fluid is different with the temperature of tank inner wall, when it flows through wall, except meeting forms a flow boundary layer, also because being heated, making near near the fluid temperature (F.T.) the wall and change the formation temperature boundary layer simultaneously.According to the prandtl boundary layer theory,
In velocity boundary layer:
In temperature boundary layer:
Boundary layer internal face velocity gradient and thermograde maximum, its heat convection thermal resistance mainly concentrates on the thermal conduction resistance in thermal boundary layer zone, have a strong impact on the heat convection effect, and fin has destroyed velocity boundary layer and the temperature boundary layer of wall of inner container, reduce the heat exchange thermal resistance, further improved heat exchange efficiency.
For further reinforcing heat exchange capability, the utility model has been placed the higher radiation cylinder of roughness vertically in water tank, according to Si Difen-Boltzmann law:
E b=εσ b(T 1-T 2) 4W/m 2
Wherein: E bBe object heat radiation energy-flux density;
ε is emissivity, i.e. the ratio of body surface radiant power and black body radiation ability, the ε of black matrix=1
T 1, T 2Absolute temperature for object;
σ b=5.67×10 -8W/(m 2·K 4)
Radiation heat transfer is directly proportional with the biquadratic of temperature, the cylinder of radiation simultaneously is near black matrix, almost can absorb the radiant energy from water tank high temperature inwall fully, the temperature of cylinder is raise rapidly, and because hydraulically rough surface in fact, improved convection transfer rate, even about the area of radiation barrel a little less than the temperature of tank inner wall, also can make the defeated heat of tank inner wall high-temperature wall surface double.Add that radiant panel can improve exchange capability of heat greatly, reduced thermal stratification, be beneficial to the heat that absorptive condenser discharges, reduce condensation temperature, avoid because heating causes condensing pressure too high, and then improved the performance of Teat pump boiler, be conducive to air source hot pump water heater and apply;
The characteristics of this utility model patent are:
1, the inner water tank wall is provided with cellular heat exchange fin, its pressure-resistance structure power is strong, the honeycomb hole that they adjoin has mutually constituted the withstand voltage mechanics version of arcuation each other, need not increase wall thickness and strengthen that it is withstand voltage, and can save metal material greatly, the expense that reduces cost, moreover, its compact conformation reduces the occupancy in space.
2, each hole of honeycomb ceramics can increase heat exchange area to the fin of the partition of other hole when the heat radiation that is Myself on the inner water tank wall, has improved heat exchange amount ability, i.e. so-called " rib effect altogether ".
3, this water tank utilizes the little principle of pressure drop of cellular fin heat transfer process, has reduced to provide the supply of circulation power to fluid, and produces stronger turbulent flow under than the low reynolds number situation, thereby has improved its heat exchange property greatly.
4, higher radiation cylinder and the cellular fin of placing vertically in this water tank of roughness carries out radiation heat transfer, with the cold heat convection that carries out on every side, reduced thermal stratification simultaneously, is beneficial to the heat that absorptive condenser discharges, the performance of raising water heater.
5, the radiation cylinder is equipped with in this tank center, and cylinder is opening up and down, has aperture on the barrel, is beneficial to water tank inner transverse heat convection.
6, this water tank can finely prevent from fluid fouling on the tank inner wall face from reducing the thermal conduction resistance that fouling increases, and has improved the heat exchange effect, prolongs the service life of water tank.

Claims (8)

1. air source hot pump water heater hot water storage tank, it is characterized in that: comprise tank shell (2) and be installed in the interior inner water tank (4) of tank shell (2), tank shell (2) is provided with hot water outlet (1) and the cooling water inlet (5) that is communicated with inner water tank (4), be wound with condenser coil (6) on the outer wall of inner water tank (4), also be provided with the condensation-water drain (8) that is communicated with condenser coil (6) on the tank shell (2), fin (9) is installed on the inwall of inner water tank (4).
2. air source hot pump water heater hot water storage tank according to claim 1, it is characterized in that: described fin (9) is cellular fin.
3. air source hot pump water heater hot water storage tank according to claim 1 is characterized in that: described inner water tank (4) central authorities are equipped with the radiation cylinder (10) that axially arranges along water tank.
4. air source hot pump water heater hot water storage tank according to claim 3, it is characterized in that: described radiation cylinder (10) upper and lower opening and barrel have aperture.
5. air source hot pump water heater hot water storage tank according to claim 3, it is characterized in that: described radiation cylinder (10) is shaggy cylinder.
6. air source hot pump water heater hot water storage tank according to claim 3, it is characterized in that: described radiation cylinder (10) is installed in the inner water tank (4) by support (11).
7. according to claim 1,2 or 3 described air source hot pump water heater hot water storage tanks, it is characterized in that: be provided with heat-insulation layer (3) between described tank shell (2) and the inner water tank (4), heat-insulation layer (3) is with condenser coil (6) and inner water tank (4) parcel.
8. air source hot pump water heater hot water storage tank according to claim 1 is characterized in that: also be provided with the air bleeding valve (7) that is communicated with inner water tank (4) on the described tank shell (2).
CN 201220668905 2012-12-05 2012-12-05 Heat-accumulation water tank of air source heat pump water heater Expired - Fee Related CN203053002U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220668905 CN203053002U (en) 2012-12-05 2012-12-05 Heat-accumulation water tank of air source heat pump water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220668905 CN203053002U (en) 2012-12-05 2012-12-05 Heat-accumulation water tank of air source heat pump water heater

Publications (1)

Publication Number Publication Date
CN203053002U true CN203053002U (en) 2013-07-10

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ID=48735949

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220668905 Expired - Fee Related CN203053002U (en) 2012-12-05 2012-12-05 Heat-accumulation water tank of air source heat pump water heater

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595967A (en) * 2015-02-13 2015-05-06 东南大学 Heating device of solar water heater with discrete-type heat pipes
CN105083569A (en) * 2015-09-09 2015-11-25 中国商用飞机有限责任公司 Heat exchange enhancement device and method for aircraft fuel oil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595967A (en) * 2015-02-13 2015-05-06 东南大学 Heating device of solar water heater with discrete-type heat pipes
CN105083569A (en) * 2015-09-09 2015-11-25 中国商用飞机有限责任公司 Heat exchange enhancement device and method for aircraft fuel oil

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20151205