CN102628658A - Method for separating ice and frost from surface of heat exchanger and application - Google Patents
Method for separating ice and frost from surface of heat exchanger and application Download PDFInfo
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- CN102628658A CN102628658A CN2012100020561A CN201210002056A CN102628658A CN 102628658 A CN102628658 A CN 102628658A CN 2012100020561 A CN2012100020561 A CN 2012100020561A CN 201210002056 A CN201210002056 A CN 201210002056A CN 102628658 A CN102628658 A CN 102628658A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 230000001154 acute effect Effects 0.000 claims abstract description 9
- 238000004378 air conditioning Methods 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 8
- 239000013535 sea water Substances 0.000 claims description 6
- 238000010612 desalination reaction Methods 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 238000007667 floating Methods 0.000 abstract description 19
- 230000005484 gravity Effects 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010257 thawing Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention relates to a method for separating ice and frost from the surface of a heat exchanger. According to the method, a low-heat-conductivity or insulating heat-insulating strip (1) is arranged on a heat transfer surface (2) of the heat exchanger (3); the acute angle of the include angle of the tangential direction and the vertical direction of the heat transfer surface (2), for blocking moving direction of the ice block and the frost block, of the heat exchanger (3) is designed into the anti-cotangent function value of the maximum static friction of the ice block and the frost block on the heat transfer surface (2); and the heat-insulating strip (1) divides the heat transfer surface (2) into a non-annular region and a non-closed region. According to the method, the ice block and the frost block can be separated from the surface of the heat exchanger (3) under the action of gravity force and floating force, so that the heat transfer resistance of the heat exchanger (3) is reduced, the temperature difference between the two sides of the heat transfer surface (2) of the heat exchanger (3) is reduced, the energy efficiency of the system is improved, the energy consumption for removing ice and frost is reduced, and the reliability and the stability of the system are improved.
Description
Technical field
The present invention be a kind ofly be convenient to ice, frost is from method and application that heat exchanger surface breaks away from, is applicable to that air-conditioning, heat pump heat, the energy efficiency technical field of systems such as ice making and the desalinization of ice making formula.
Background technology
When heat exchanger is lower than 0 ℃ at heat source temperature, can occur freezing, the frosting phenomenon, this brings great trouble for air-conditioning, heat pump heat distribution system; The normal operation energy consumption significantly increases; The defrost of deicing simultaneously causes system's cisco unity malfunction, and energy consumption heightens, and the comprehensive Energy Efficiency Ratio of whole system is declined to a great extent; Even can not use, ice cold storage type air-conditioning, water become systems such as icing latent heat formula heat pump heat supply and can reduce and the energy consumption increase because of the blocked up ability of ice sheet.The method of deicing at present, defrosting mainly contains heat energy (the reverse heat supply of electric heating or heat pump) deicing defrosting, mechanical automatic de-icing defrosting, artificial mechanism deicing method.Like one Chinese patent application number is 200810219706.1 to disclose a kind of defroster control system, and the defrosting temperature sensor is located on the evaporimeter, and said evaporimeter has drip tray; Be connected with a defrosting heating tube of connecting with controller with the high temperature fuse; Said defrosting heating tube is located between evaporimeter and the drip tray; The defrosting control method of this defroster control system is that combine with the compressor operating time frost layer situation of judging evaporimeter and getting into of the rate temperature change of monitoring freezer compartment of refrigerator in the refrigerator cycle of operation defrosts; During defroster; Control panel control defrosting heating tube heats one earlier regularly asks, then with circulating heated type work, after molten the moving of frost layer of device to be evaporated; The frost layer leans on self gravitation to break away from evaporimeter and drops to drip tray, about 6 ℃, withdraws from defrosting up to evaporator temperature.One Chinese patent application number is 02207678.6 to disclose the high efficiency heat-exchange tube of a kind of easy-to-defrost; Be applicable to the conveying of various cold medium, this heat-exchange tube comprise one have a cold medium runner hollow tube, a plurality of outside at intervals and downward-slopingly extend heat exchange fin different in size radially from this hollow tube outer surface; This heat exchange fin can increase heat exchange area and effectively promote hot transfer efficiency, reduces the contact area of frost simultaneously, and can easily defrost.
These methods respectively have its shortcoming, and heat energy deicing defrosting is to melt frost with heat energy to achieve the goal, but consumes a large amount of electric energy or heat energy, system is lost more than gain and stop using; Machinery automatic de-icing frost, though a little complex structures have been lacked in consumption, because of moving component is arranged, fault rate is high, reliability is low, gives and produces, lives and bring great inconvenience; Though artificial mechanism deicing defrosting does not have energy consumption, wastes time and energy, operate extremely not convenient, so the problem that deicing defrosts has restricted the application of air-conditioning, heat pump heat supply greatly.In addition, the deicing most important difficult point that defrosts is that the process of heat-exchange tube ice is the frost piece that forms annular closed shape at tube wall, has encased heat exchanger tube and be full of between the pipe of heat exchanger the gap because of ice cube greatly to deviate from.
Summary of the invention
The objective of the invention is to above-mentioned problem, provide a kind of and be convenient to ice, frost is from the method that heat exchanger surface breaks away from, be applicable to air-conditioning, heat pump refrigerating, heat, the design and the manufacturing of the heat absorbing end heat exchanger of system such as ice making formula desalinization.
To achieve these goals, the present invention has adopted following technical solution:
The method that a kind ofly be convenient to ice, frost breaks away from from heat exchanger surface; It is the adiabatic bar that on the heat-transfer area of heat exchanger, is provided with low heat conduction or heat-insulating material; Heat exchanger is divided into some non-annularities, non-enclosed region with the heat-transfer area that water (or moisture, steam medium) contacts; Because it is thermoae inhomogeneous that the existence of heat-insulating material has caused heat-transfer area to upload, the heat-insulating material thermal resistance is big, and the heating surface that does not have the heat-insulating material covering above that is difficult to the frosting of freezing; Thereby stoped and formed bulk, continuous, closed hoop frost piece, the very convenient disengaging heat exchanger surface of such frost piece on the heat exchanger heat transfer surface; And the acute angle design of angle of tangential direction and vertical direction that heat exchanger is stopped the heat-transfer area of ice, white piece telemechanical direction process less than ice, white piece is to the arc cotangent functional value of the coefficient of maximum static friction of heat-transfer area.
Described adiabatic bar generally adopts the very poor material of heat conductivility to process; For example plastics, graphite, glass fibre, asbestos, silicate foaming body or the composite between them; The kind of plastics is more; Comprise the polystyrene, Polyurethane, polyethers, polyvinyl chloride of foaming etc., require to differ good more far more than the thermal conductivity factor of the material of heat exchanger.
If can not break away from because of adiabatic bar and tube surface have ice (frost) piece that thin ice (frost) layer that the gap forms causes, in the time of therefore will deicing frost,, then only need this thin ice frost layer is melted disconnected getting final product with heat energy if gravity or buoyancy can not fracture this thin ice frost layer
In order to make the frost piece under gravity or buoyancy function, break away from heat exchanger automatically, to the disengaging direction that the frost piece forms under gravity or buoyancy function, the heat-transfer area of heat exchanging device and the designing requirement at inclination angle:
A. during the density of density＜medium fluid of ice (coagulum), ice (coagulum) will move upward after breaking away from heat transfer interface, and at this moment the acute angle, theta of the angle of the tangential direction of heat transfer interface and vertical direction should satisfy the requirement of coefficient of maximum static friction μ＜cot θ.
When (1) heat-transfer area of heat exchanger is the inverted triangle inclined-plane (figure); Ice (coagulum) is under gravity and buoyancy of liquid effect; Ice (coagulum) is at cooling surface; When the acute angle, theta of the angle of the tangential direction of cooling surface and vertical direction more and more littler, when the acute angle, theta of the tangential direction of cooling surface and the angle of vertical direction satisfies requiring of coefficient of maximum static friction μ＜cot θ, the coagulum slip that can make progress automatically.
When (2) heat-transfer area of heat exchanger is positive triangle inclined-plane, then need not to follow above formula, ice (coagulum) breaks away from the back and upwards slides automatically.
B. during the density of density＞medium fluid of ice (coagulum), ice (coagulum) will move downward after breaking away from heat transfer interface, and at this moment the acute angle, theta of the angle of the tangential direction of heat-transfer area and vertical direction should satisfy the requirement of coefficient of maximum static friction μ＜cot θ.
When (1) heat-transfer area of heat exchanger is positive triangle inclined-plane; Ice (coagulum) is under gravity and buoyancy of liquid effect; Coagulum is at heat transfer interface; When the acute angle, theta of the angle of the tangential direction of cooling surface and vertical direction more and more littler, cooling surface and the acute angle, theta of angle of tangential direction vertical direction when satisfying requiring of coefficient of maximum static friction μ＜cot θ, coagulum begins to lower slider.
When (2) heat-transfer area of heat exchanger is the inverted triangle inclined-plane, then need not to follow above formula, after coagulum breaks away from automatically to lower slider.
Advantage of the present invention:
1, uses method of the present invention; Ice, white piece just can make ice, white piece break away from heat exchanger surface easily under gravity and buoyancy function; Thereby reduce the heat transmission resistance of heat exchanger, reduce heat exchanger heat transfer face temperature difference, improve the efficiency of system; Reduce deicing, defrost energy consumption simultaneously, improved the reliability and stability of system.
2, defrost, change ice process do not need the heating heat exchanger surface again or stop the work of ice machine, have improved operating efficiency and have reduced meaningless energy loss.
Description of drawings
Fig. 1 is to use the adiabatic bar of the plate type heat exchanger of the inventive method to cut apart the heating surface sketch map.
Fig. 2 is to use the adiabatic bar of the plate type heat exchanger of the inventive method to cut apart the heating surface cutaway view.
Fig. 3 is to use the adiabatic bar of the pipe heat exchanger of the inventive method to cut apart the heating surface sketch map.
Fig. 4 is to use the adiabatic bar of the pipe heat exchanger of the inventive method to cut apart the heating surface cutaway view.
Fig. 5 is to use the sketch map of θ angle of an embodiment of the inventive method.
Fig. 6 is to use the sketch map of θ angle of another embodiment of the inventive method.
Fig. 7 is outdoor spray-type heat exchanger air conditioner sketch map.
Fig. 8 is an ice making formula seawater desalination system sketch map.
Fig. 9 is that heat pump heats the hot-water supply system sketch map.
Figure 10 is the sketch map of territory, heat energy deicing ice formation and the ratio of ice sheet area in the heat-transfer pipe.
Reference numeral: adiabatic bar 1, heat-transfer area 2, heat exchanger 3, ice sheet 4, heat-absorbing medium 5, territory, ice formation 7 is changed in gap 6.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is further specified.
Embodiment 1: shown in accompanying drawing 1, accompanying drawing 2, use the tube-sheet type evaporimeter of the inventive method, be made up of heat exchanger plates 3 and adiabatic bar 1; Adiabatic bar 1 is installed on the heat-transfer area 2 of heat exchanger plates 3; And heat exchanger plates 3 is divided into some non-annularities, non-enclosed region with the heat-transfer area 2 that water (or moisture, steam medium) contacts; Because it is thermoae inhomogeneous that the existence of heat-insulating material has caused heat-transfer area to upload; The heat-insulating material thermal resistance is big; Do not have the heating surface that heat-insulating material covers above that and be difficult to the frosting of freezing, thus stoped form on the heat-transfer area 2 of heat exchanger plates 3 bulk, continuously, closed hoop frost piece, the very convenient disengaging heat-transfer area 2 of such frost piece; And the angle design of tangential direction and vertical direction that heat exchanger plates 3 is stopped the heat-transfer area 2 of ice, white piece telemechanical direction process less than ice, white piece is to the arc cotangent functional value of the coefficient of maximum static friction of heat-transfer area 2; Be θ＜arccot μ.
The computing formula at θ angle
A, (as shown in Figure 5) are when the density of the density＜medium fluid of ice (coagulum); Object on adiabatic bar (1) inclined-plane (ice, frost) is because the tangential force that buoyancy produces during greater than the tangential force sum of the gravity generation of maximum static friction force and frost; Object (ice, frost) slides with heat-transfer area (2), and the object on the inclined-plane (ice, frost) upwards slides.
The tangential force that the gravity effect produces: Gcos θ;
Represent maximum static friction force with f, N representes normal pressure, and wherein proportionality constant μ is called confficient of static friction, is a numerical value that does not have unit.Factors such as the material of μ and contact-making surface, smooth degree of roughness, dried wet situation are relevant, and irrelevant with the size of contact-making surface, f=μ N;
The tangential force that buoyancy produces: F
FloatingCos θ
Work as F
FloatingDuring cos θ＞f+Gcos θ, the object on the inclined-plane (ice, frost) upwards slides:
F
FloatingCos θ＞f+Gcos θ
→ F
FloatingCos θ＞μ N+Gcos θ
→ F
FloatingCos θ＞μ (F
Floating-G) sin θ+Gcos θ
→ F
FloatingCos θ-Gcos θ＞μ (F
Floating-G) sin θ
→ (F
Floating-G) cos θ＞μ (F
Floating-G) sin θ
→ (F
Floating-G) cos θ/(F
Floating-G) sin θ＞μ
→cosθ/sinθ＞μ
→μ＜cotθ
→θ＜arccotμ
B, (as shown in Figure 6) are when the density of the density＞medium fluid of ice (coagulum); Object on adiabatic bar (1) inclined-plane (ice, frost) is because the tangential force that the gravity effect produces during greater than the tangential force sum of maximum static friction force and buoyancy generation; Object (ice, frost) slides with heat-transfer area (2), and the object on the inclined-plane (ice, frost) is to lower slider.
Represent the tangential force that the gravity effect produces with F, G representes gravity, F=Gcos θ;
Represent maximum static friction force with f, N representes normal pressure, and wherein proportionality constant μ is called confficient of static friction, is a numerical value that does not have unit.Factors such as the material of μ and contact-making surface, smooth degree of roughness, dried wet situation are relevant, and irrelevant with the size of contact-making surface, f=μ N;
The tangential force that buoyancy produces: F
FloatingCos θ
As F＞f+F
FloatingDuring cos θ, the object on the inclined-plane (ice, frost) is to lower slider:
F＞f+F
FloatingCos θ
→ Gcos θ=μ N+F
FloatingCos θ
→ Gcos θ＞μ (G-F
Floating) sin θ+F
FloatingCos θ
→ Gcos θ-F
FloatingCos θ＞μ (G-F
Floating) sin θ
→ (G-F
Floating) cos θ＞μ (G-F
Floating) sin θ
→ (G-F
Floating) cos θ/(G-F
Floating) sin θ＞μ
→μ＜cotθ
→θ＜arccotμ
Seven, application implementation example:
Embodiment 2: outdoor spray-type heat exchanger air conditioner
Like Fig. 7, the heat-transfer pipe (or heat transfer plate) in the outdoor spray-type heat exchanger designs manufacturing by the inventive method.Water becomes ice when outside air temperature is lower than 0 degree centigrade; Because of design the heat exchanger of making 3 by the inventive method; Be designed with on the heat exchanger wall greater than pipe (plate) the adiabatic bar 1 of radius or height that freezes, thus stoped form on the heat-transfer area 2 of pipe (plate) of heat exchanger tube bulk, continuously, closed hoop frost piece, make deice conveniently, efficient is high, energy consumption is low; Air-conditioning system can also operate as normal, and the air-conditioning of forming with conventional heat exchanger because of deice difficulty, efficient is low, energy consumption is high and compelled inactive.Design manufacturing fountain air conditioner by the inventive method in addition and can also make thermal source with waste water, air-conditioning system continues as indoor heating through the heat of solidification that absorbs water.
Like Fig. 8; The operation principle of ice making formula seawater desalination system: be condensed into ice cube on the evaporimeter heat-transfer surface of seawater in the pond that freezes; Because evaporimeter manufactures and designs by method of the present invention, be designed with on the evaporator wall greater than pipe (plate) the adiabatic bar 1 of radius or height that freezes, thereby stoped form on the heat-transfer area 2 of pipe (plate) of evaporimeter bulk, continuously, closed hoop frost piece; Be convenient to very much to break away from heat exchanger and float on the seawater face; Ice in the pond that freezes moved in the ice-melt pond dissolve into water behind the absorptive condenser liberated heat,, contain other impurity (as: salt) hardly because ice cube is made up of hydrone; So freezing process also is a desalination processes, the ice that ice cube dissolves back formation is fresh water.
Operation principle such as Fig. 9 adopt the refrigerant evaporator that manufactures and designs by the present invention.When the water temperature of used heat water tank reached 0 degree centigrade, the refrigerant evaporator heat-transfer area will freeze, and ice cube returns under the effect of heating load at buoyancy or pipeline, and ice cube breaks away from heat-transfer area and bubbles through the water column, and was convenient to collect get rid of.Owing to adopt the refrigerant evaporator that manufactures and designs by the present invention; Be designed with the adiabatic bar 1 greater than icing radius of pipe (plate) or height on the evaporator wall, the ice sheet when ice cube melts on the adiabatic bar is very thin, at first deicing; Thereby stoped form on the heat-transfer area 2 of pipe (plate) of evaporimeter bulk, continuously, closed hoop frost piece; The ice cube of removing on the heat-transfer area is not only even used heat with a spot of heat, and the deicing time is short, less energy consumption; So improved the heat exchange efficiency and the intensity of refrigerant evaporator, reached reliable operation, purpose of energy saving thereby make heat pump heat hot-water supply system.
As shown in Figure 4; Because of having ice (frost) piece that thin ice (frost) layer that gap 6 forms causes, adiabatic bar and tube surface can not break away from; Therefore in the time of will deicing frost,, then only need this thin ice frost layer to be melted disconnected getting final product with heat energy if gravity or buoyancy can not fracture this thin ice frost layer.
If the length of heat-transfer pipe is 1 meter, ice layer thickness 3mm, heat-transfer pipe external diameter are 10mm, and the gap of adiabatic bar and heat-transfer pipe is 0.1mm (actual be lower than 0.1mm), the melting heat 3.35 * 105J/Kg of ice.
White heat energy freezes:
(π R
2-π r
2The melting heat of) * L * ρ * ice
(3.14×0.8
2-3.14×0.5
2)×100×0.917×10
-3×3.35×10
5
≈1.22×100×0.917×10
-3×3.35×10
5
≈37619J
Deice white heat energy: the ice that melts 0.1mm
(π R '
2-π r
2The melting heat of) * L * ρ * ice
(3.14×0.51
2-3.14×0.5
2)×100×0.917×10
-3×3.35×10
5
≈0.0317×100×0.917×10
-3×3.35×10
5
≈974J
Efficient is: (37619-974)/and 37619 * 100%=97.4%.
The length of same heat-transfer pipe is 1 meter, and ice layer thickness 3mm, heat-transfer pipe external diameter are 10mm, and the heat energy of the frost that freezes equates to be approximately 37619J.
Shown in Figure 10, the density of the density＜medium fluid of ice (coagulum), behind the ice sheet of thawing heat-transfer pipe lower part, frost floats after breaking away from heat-transfer pipe automatically;
On the contrary, if the density of the density＞medium fluid of ice (coagulum), behind the ice sheet of thawing heat-transfer pipe top, frost is sunk after breaking away from heat-transfer pipe automatically.
Deice white heat energy:
The melting heat of S * L * ρ * ice
≈0.3516×100×0.917×10
-3×3.35×10
5
≈10800J
The minimum area that S---deicing must be melted
Efficient is: (37619-10800)/and 37619 * 100%=71.3
Claims (3)
- One kind be convenient to ice, method that frost breaks away from from heat exchanger surface; It is characterized in that: the adiabatic bar (1) that on the heat-transfer area (2) of heat exchanger (3), is provided with low heat conduction or heat-insulating material; Heat-transfer area (2) is divided into the zone of non-annularity, non-closure, makes its heat exchanger (3) stop that the acute angle of angle of tangential direction and vertical direction of the heat-transfer area (2) of ice, the white piece direction of motion is designed to less than ice, the white piece arc cotangent functional value to the coefficient of maximum static friction of heat-transfer area (2).
- 2. according to claim 1ly be convenient to ice, frost is from the method that heat exchanger surface breaks away from, it is characterized in that: described adiabatic bar (1) adopts plastics, graphite, glass fibre, asbestos, silicate foaming body or the composite between them to process.
- 3. claim 1 describedly is convenient to ice, frost is from the method that heat exchanger surface breaks away from, and it is characterized in that: this method at air-conditioning, heat pump refrigerating, heat or the application of ice making formula seawater desalination system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100020561A CN102628658A (en) | 2012-01-01 | 2012-01-01 | Method for separating ice and frost from surface of heat exchanger and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100020561A CN102628658A (en) | 2012-01-01 | 2012-01-01 | Method for separating ice and frost from surface of heat exchanger and application |
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| Publication Number | Publication Date |
|---|---|
| CN102628658A true CN102628658A (en) | 2012-08-08 |
Family
ID=46586969
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|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61272594A (en) * | 1985-05-24 | 1986-12-02 | Matsushita Electric Ind Co Ltd | Finned heat exchanger |
| JPH08152228A (en) * | 1994-11-29 | 1996-06-11 | Sanyo Electric Co Ltd | Heat exchanger |
| JPH109786A (en) * | 1996-06-21 | 1998-01-16 | Matsushita Refrig Co Ltd | Finned heat exchanger |
| CN2534543Y (en) * | 2002-03-14 | 2003-02-05 | 柯朝阳 | Easy-to-defrost high efficiency heat-exchange tube |
| CN1295466C (en) * | 2003-12-12 | 2007-01-17 | 三星电子株式会社 | Refrigeration apparatus and refrigerator with the refrigeration apparatus |
-
2012
- 2012-01-01 CN CN2012100020561A patent/CN102628658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61272594A (en) * | 1985-05-24 | 1986-12-02 | Matsushita Electric Ind Co Ltd | Finned heat exchanger |
| JPH08152228A (en) * | 1994-11-29 | 1996-06-11 | Sanyo Electric Co Ltd | Heat exchanger |
| JPH109786A (en) * | 1996-06-21 | 1998-01-16 | Matsushita Refrig Co Ltd | Finned heat exchanger |
| CN2534543Y (en) * | 2002-03-14 | 2003-02-05 | 柯朝阳 | Easy-to-defrost high efficiency heat-exchange tube |
| CN1295466C (en) * | 2003-12-12 | 2007-01-17 | 三星电子株式会社 | Refrigeration apparatus and refrigerator with the refrigeration apparatus |
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