CN113137680A - Refrigeration and heating equipment with variable evaporation temperature and condensation temperature - Google Patents
Refrigeration and heating equipment with variable evaporation temperature and condensation temperature Download PDFInfo
- Publication number
- CN113137680A CN113137680A CN202110593193.6A CN202110593193A CN113137680A CN 113137680 A CN113137680 A CN 113137680A CN 202110593193 A CN202110593193 A CN 202110593193A CN 113137680 A CN113137680 A CN 113137680A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- evaporator
- variable
- temperature
- microchannel heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 31
- 230000008020 evaporation Effects 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 238000005057 refrigeration Methods 0.000 title claims abstract description 16
- 230000005494 condensation Effects 0.000 title claims abstract description 9
- 238000009833 condensation Methods 0.000 title claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to the technical field of refrigeration equipment, in particular to refrigeration and heating equipment with variable evaporation temperature and condensation temperature. The evaporator comprises an evaporator, wherein a refrigerant pipeline is connected and arranged at the front end of the outside of the evaporator, a composite pore plate is arranged inside the refrigerant pipeline, a compressor is arranged at the top end of the outside of the evaporator, a refrigerant is arranged inside the evaporator, and a microchannel heat-carrying layer is arranged above the refrigerant inside the evaporator. The composite pore plate has the advantages of reasonable and simple structure and convenience in operation, the refrigerant is conveyed into the evaporator through the refrigerant pipeline, and the aperture of the composite pore plate on the plate surface can be changed at any time according to the real-time evaporation temperature to adapt to the evaporation temperature, so that the composite pore plate can be suitable for severe environments with large temperature difference. Meanwhile, in order to solve the problem of lubricating oil floating on the surface of the refrigerant and solidified, the micro-channel heat-carrying layer is arranged on the top of the refrigerant.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to refrigeration and heating equipment with variable evaporation temperature and condensation temperature.
Background
Air conditioners are refrigeration devices that are commonly used in everyday life. The household air conditioner and the large commercial air conditioner are two types of air conditioners, wherein the household air conditioner can refrigerate and heat, but has small refrigerating capacity and low energy efficiency ratio, and when the outdoor temperature is low, the heating effect is very poor; the large commercial air conditioner can only perform single refrigeration or single heating, and cannot meet higher use scenes. And the method cannot be applied to severe environments with large temperature difference.
The above problems are problems that the art needs to solve.
Disclosure of Invention
The invention aims to provide a refrigerating and heating device with variable evaporation temperature and condensation temperature, so that the refrigerating and heating device can be suitable for severe environments with large temperature difference.
In order to solve the technical problem, the invention provides the following scheme: the refrigeration and heating equipment with the variable evaporation temperature and condensation temperature comprises an evaporator, wherein a refrigerant pipeline is connected to the front end of the outside of the evaporator, a composite pore plate is arranged inside the refrigerant pipeline, a compressor is arranged at the top end of the outside of the evaporator, a refrigerant is arranged inside the evaporator, and a micro-channel heat-carrying layer is arranged above the refrigerant inside the evaporator.
As a further improvement of the invention, capillaries are arranged in the microchannel heat-carrying layer, the capillaries are distributed in microchannels, the side of the microchannel heat-carrying layer is provided with an inlet communicated with the capillaries, and the side of the microchannel heat-carrying layer is provided with an outlet communicated with the capillaries.
As a further improvement of the invention, fins are arranged on the outer wall of the capillary tube inside the micro-channel heat carrier layer.
As a further improvement of the invention, a plurality of outlets communicated with the capillary tubes are arranged on the side surface of the micro-channel heat-carrying layer at intervals.
As a further improvement of the invention, one end of each outlet is connected with an ejector.
As a further improvement of the invention, the distance between the microchannel heat carrier layer and the liquid level of the refrigerant is 0.5mm-2 mm.
As a further improvement of the invention, the composite orifice plate comprises a throttle plate arranged inside the refrigerant pipeline, a flow guide hole is arranged on the throttle plate, fan blades are arranged on the flow guide hole, a microcomputer control board for controlling the opening and closing of the fan blades is connected to the throttle plate, and a microprocessor connected with the microcomputer control board is arranged outside the throttle plate.
As a further improvement of the invention, the microprocessor is connected with a sensor.
As a further improvement of the invention, the diversion holes are arranged in a matrix form.
As a further improvement of the invention, the fan blades are driven and controlled by a stepping servo transmission mechanism.
The invention has the beneficial effects that:
the composite pore plate has the advantages of reasonable and simple structure and convenience in operation, the refrigerant is conveyed into the evaporator through the refrigerant pipeline, and the aperture of the composite pore plate on the plate surface can be changed at any time according to the real-time evaporation temperature to adapt to the evaporation temperature, so that the composite pore plate can be suitable for severe environments with large temperature difference. Meanwhile, in order to solve the problem of lubricating oil floating on the surface of the refrigerant and solidified, the micro-channel heat-carrying layer is arranged on the top of the refrigerant.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a front view of a microchannel heat carrier layer of the present invention;
FIG. 3 is a front view of the composite orifice plate of the present invention.
Reference numerals: 1. an evaporator; 2. a compressor; 3. a microchannel heat-carrying layer; 301. a capillary tube; 302. a fin; 303. an inlet; 304. an outlet; 4. a refrigerant; 5. a refrigerant pipeline; 6. a composite orifice plate; 601. a throttle plate; 602. a flow guide hole; 603. a fan blade; 604. a microcomputer control panel; 605. a microprocessor; 606. a sensor; 7. an ejector.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, an embodiment of the present invention includes an evaporator 1, a refrigerant pipeline 5 is connected to a front end of an exterior of the evaporator 1, a composite orifice plate 6 is disposed inside the refrigerant pipeline 5, a compressor 2 is disposed at a top end of the exterior of the evaporator 1, and a refrigerant 4 is disposed inside the evaporator 1. The refrigerant is conveyed into the evaporator 1 through the refrigerant pipeline 5, and according to the real-time evaporation temperature, the aperture of the composite pore plate 6 on the surface can be changed at any time to adapt to the evaporation temperature, so that the evaporator can be suitable for the severe environment with large temperature difference. Meanwhile, in order to solve the problem of lubricating oil floating on the surface of the refrigerant 4 and solidified, the micro-channel heat-carrying layer 3 made of steel materials is arranged on the top of the refrigerant 4.
In this embodiment, the capillary 301 is disposed inside the microchannel heat-carrying layer 3, the capillary 301 is distributed in a microchannel, the side surface of the microchannel heat-carrying layer 3 is provided with an inlet 303 communicated with the capillary 301, and the side surface of the microchannel heat-carrying layer 3 is provided with an outlet 304 communicated with the capillary 301. The inlet 303 is connected with an external hot gas source, so as to heat the microchannel heat-carrying layer 3, the lubricating oil floating on the surface of the refrigerant 4 can be dissolved by heating the microchannel heat-carrying layer 3, the dissolved lubricating oil is brought back to the compressor 2 through the boiling refrigerant 4, in order to make the heating more uniform, so as to distribute the capillary tube 301 according to the microchannel, and meanwhile, the hot gas is cooled to form liquid and can be discharged from the outlet 304.
In the actual use process, in order to further accelerate the heating efficiency of the micro-channel heat-carrying layer 3, the fins 302 are arranged on the outer wall of the capillary 301 inside the micro-channel heat-carrying layer 3, and the heating efficiency can be improved through the heat absorption of the fins 302; since the hot gas enters the microchannel heat-carrying layer 3 and is rapidly liquefied, a plurality of outlets 304 are arranged on the side surface of the microchannel heat-carrying layer 3 at intervals, so that the liquid can conveniently flow out of the microchannel heat-carrying layer 3; meanwhile, in order to facilitate the liquid to flow out of the micro-channel heat-carrying layer 3, the ejector 7 is connected to the outlet 304, so that the liquid can flow out of the micro-channel heat-carrying layer 3 conveniently.
According to practical conditions, the micro-channel heat-carrying layer 3 is not immersed in the refrigerant 4, and simultaneously, in order to better heat lubricating oil on the surface of the refrigerant 4, the distance between the micro-channel heat-carrying layer 3 and the liquid level of the refrigerant 4 is controlled to be 0.5mm-2mm, so that solidified lubricating oil can be better heated and dissolved without immersion.
In this embodiment, the compound orifice plate 6 includes a throttle plate 601 disposed inside the refrigerant pipeline 5, a flow guide hole 602 is disposed on the throttle plate 601, fan blades 603 are disposed on the flow guide hole 602, a microcomputer control board 604 for controlling the opening and closing of the fan blades 603 is connected to the throttle plate 601, and a microprocessor 605 connected to the microcomputer control board 604 is disposed outside the throttle plate 601. Since the evaporation temperature can be dynamically changed, the microprocessor 605 can send real-time instruction signals to the microcomputer control board 604 according to the temperature, the refrigerant quality, the refrigerant flow rate, the throttling pressure difference and other parameters required by evaporation, and control the opening and closing states of the fan blades 603 in real time, so that the array aperture of the flow guide holes 602 is changed, the refrigerant can pass through the flow guide holes 602 with different apertures, and the dynamically changed evaporation temperature is achieved.
In this embodiment, since the change of the aperture, the pressure difference and other factors may affect the evaporation temperature, the microprocessor 605 is connected to the plurality of sensors 606, the change of the evaporation temperature and the evaporation pressure can be fed back in time by the operation of the sensors 606, and a feedback signal is sent to the microprocessor 605, so that the microprocessor 605 can send a dynamic instruction signal to the microcomputer control board 604 in real time, thereby changing the opening and closing state of the diversion hole 602, and maintaining the refrigerant at the required evaporation temperature.
In this embodiment, the guiding holes 602 are arranged in a matrix. The number of the aperture arrays for opening and closing the diversion holes 602 can be increased, so that the refrigeration equipment with dynamically changed evaporation temperature can be suitable.
In this embodiment, the fan blade 603 is controlled by a step servo transmission mechanism, the step servo transmission mechanism includes a servo motor and a worm connected to the fan blade 603, and the servo motor can accurately control the rotation angle of the worm, so as to improve the opening and closing precision of the fan blade 603.
In the actual use process, a plurality of compound pore plates 6 can be combined for use, a plurality of throttle plates 601 are arranged in the refrigerant pipeline 5 at intervals, and the microcomputer control panel 604 controls the opening and closing states of all the diversion holes 602, so that the variable control of the temperature of the refrigerant in the refrigerant pipeline 5 can be realized. The evaporator can be suitable for refrigeration equipment with complicated and variable evaporation temperature, and meets the refrigeration and heating requirements under extremely complicated environment.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Any substitution or change made by the person skilled in the art on the basis of the present invention is within the protection scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The refrigeration and heating equipment with the variable evaporation temperature and condensation temperature is characterized by comprising an evaporator (1), wherein a refrigerant pipeline (5) is connected to the front end of the outside of the evaporator (1), a composite pore plate (6) is arranged inside the refrigerant pipeline (5), a compressor (2) is arranged at the top end of the outside of the evaporator (1), a refrigerant (4) is arranged inside the evaporator (1), and a microchannel heat-carrying layer (3) is arranged above the refrigerant (4) and inside the evaporator (1).
2. The refrigerating and heating equipment with variable evaporation temperature and condensation temperature as claimed in claim 1, wherein the microchannel heat carrier layer (3) is internally provided with capillaries (301), the capillaries (301) are distributed in microchannels, the side surface of the microchannel heat carrier layer (3) is provided with an inlet (303) communicated with the capillaries (301), and the side surface of the microchannel heat carrier layer (3) is provided with an outlet (304) communicated with the capillaries (301).
3. A variable evaporating and condensing temperature refrigerating and heating apparatus as claimed in claim 2, wherein fins (302) are provided on the outer wall of the capillary tube (301) inside the microchannel heat carrier layer (3).
4. A variable evaporating and condensing temperature refrigerating and heating apparatus as claimed in claim 2, wherein said microchannel heat carrier layer (3) is provided with a plurality of outlets (304) at intervals on the side thereof communicating with said capillary tube (301).
5. A variable evaporating and condensing temperature refrigeration and heating apparatus as claimed in claim 4, wherein an ejector (7) is connected to each end of the outlet (304).
6. A variable evaporating and condensing temperature refrigerating and heating apparatus as claimed in claim 1, wherein said microchannel heat carrier layer (3) is located at a distance of 0.5mm to 2mm from the liquid surface of said refrigerant (4).
7. The refrigerating and heating equipment with variable evaporation temperature and condensation temperature as claimed in claim 1, wherein said compound orifice plate (6) comprises a throttle plate (601) arranged inside said refrigerant pipeline (5), said throttle plate (601) is provided with a flow guiding hole (602), said flow guiding hole (602) is provided with a fan blade (603), said throttle plate (601) is connected with a microcomputer control board (604) for controlling said fan blade (603) to open and close, and a microprocessor (605) connected with said microcomputer control board (604) is arranged outside said throttle plate (601).
8. A variable evaporating and condensing temperature cooling and heating apparatus as claimed in claim 7, wherein the microprocessor (605) is connected to sensors (606).
9. The variable evaporating and condensing temperature refrigeration and heating apparatus of claim 7 wherein said orifices (602) are arranged in a matrix.
10. A variable evaporating and condensing temperature refrigeration and heating apparatus as claimed in claim 7, wherein said fan blades (603) are drive controlled by a step servo drive.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110593193.6A CN113137680A (en) | 2021-05-28 | 2021-05-28 | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature |
| PCT/CN2022/095173 WO2022247897A1 (en) | 2021-05-28 | 2022-05-26 | Refrigeration and heating apparatus with variable evaporation temperature and condensation temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110593193.6A CN113137680A (en) | 2021-05-28 | 2021-05-28 | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113137680A true CN113137680A (en) | 2021-07-20 |
Family
ID=76815795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110593193.6A Pending CN113137680A (en) | 2021-05-28 | 2021-05-28 | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113137680A (en) |
| WO (1) | WO2022247897A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121950A1 (en) * | 2020-12-11 | 2022-06-16 | 爱法科技(无锡)有限公司 | Low-temperature flooded evaporator and using method |
| WO2022247892A1 (en) * | 2021-05-28 | 2022-12-01 | 爱法科技(无锡)有限公司 | Electronic multi-stage composite matrix type throttle orifice plate |
| WO2022247897A1 (en) * | 2021-05-28 | 2022-12-01 | 爱法科技(无锡)有限公司 | Refrigeration and heating apparatus with variable evaporation temperature and condensation temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806725A (en) * | 2017-12-06 | 2018-03-16 | 珠海格力电器股份有限公司 | Throttling device, refrigerant circulation system and air conditioner |
| CN109442822A (en) * | 2018-11-28 | 2019-03-08 | 宁波奥克斯电气股份有限公司 | A kind of throttling set and its control method of air-conditioning system |
| CN112432391A (en) * | 2020-12-11 | 2021-03-02 | 爱法空调冷冻科技(无锡)有限公司 | Low-temperature flooded evaporator and use method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10220881A (en) * | 1997-02-05 | 1998-08-21 | Toshiba Corp | Method of controlling air conditioner |
| CN107388646A (en) * | 2017-08-10 | 2017-11-24 | 珠海格力电器股份有限公司 | Refrigerant flow regulating mechanism and refrigerating device |
| CN210687198U (en) * | 2019-09-23 | 2020-06-05 | 浙江捷亨环境科技有限公司 | Gear-controlled rotary opening and closing structure |
| CN113124589A (en) * | 2021-05-28 | 2021-07-16 | 爱法科技(无锡)有限公司 | Electronic multi-stage composite matrix type throttle orifice plate |
| CN113137680A (en) * | 2021-05-28 | 2021-07-20 | 爱法科技(无锡)有限公司 | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature |
-
2021
- 2021-05-28 CN CN202110593193.6A patent/CN113137680A/en active Pending
-
2022
- 2022-05-26 WO PCT/CN2022/095173 patent/WO2022247897A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806725A (en) * | 2017-12-06 | 2018-03-16 | 珠海格力电器股份有限公司 | Throttling device, refrigerant circulation system and air conditioner |
| CN109442822A (en) * | 2018-11-28 | 2019-03-08 | 宁波奥克斯电气股份有限公司 | A kind of throttling set and its control method of air-conditioning system |
| CN112432391A (en) * | 2020-12-11 | 2021-03-02 | 爱法空调冷冻科技(无锡)有限公司 | Low-temperature flooded evaporator and use method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121950A1 (en) * | 2020-12-11 | 2022-06-16 | 爱法科技(无锡)有限公司 | Low-temperature flooded evaporator and using method |
| WO2022247892A1 (en) * | 2021-05-28 | 2022-12-01 | 爱法科技(无锡)有限公司 | Electronic multi-stage composite matrix type throttle orifice plate |
| WO2022247897A1 (en) * | 2021-05-28 | 2022-12-01 | 爱法科技(无锡)有限公司 | Refrigeration and heating apparatus with variable evaporation temperature and condensation temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022247897A1 (en) | 2022-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113137680A (en) | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature | |
| CN101213415B (en) | Heat Exchange systems | |
| CN214250272U (en) | Double-temperature constant-temperature wine cabinet | |
| KR20040065626A (en) | Heat exchanger | |
| US9574803B2 (en) | Absorber with plate exchanger with porous distribution element | |
| CN111895772A (en) | High-efficient heat pump drying system | |
| CN105546879A (en) | Parallel flow heat exchanger and air conditioner | |
| CN205373156U (en) | Parallel flow heat exchanger and air conditioner | |
| CN101694360A (en) | Parallel flow heat exchanger and wing band structure thereof | |
| US11629896B2 (en) | Heat exchanger and refrigeration cycle apparatus | |
| CN217236132U (en) | Variable frequency air conditioning system | |
| CN104501470B (en) | Parallel-flow heat exchanger and air-conditioner | |
| CN107289705B (en) | Low-temperature refrigerator | |
| JPH0783458A (en) | Indoor device for air conditioner | |
| CN215336705U (en) | Air conditioner | |
| CN221005569U (en) | Heat exchange device for water chilling unit and water chilling unit | |
| CN216159159U (en) | Indoor unit of air conditioner | |
| CN219934254U (en) | Air conditioner | |
| CN219223417U (en) | Heat exchanger assembly for energy conservation of refrigeration equipment | |
| US12111123B2 (en) | Heat exchanger | |
| JP3007708B2 (en) | Cooling / hot air direct-blowing absorption air conditioner and absorption air conditioning system | |
| CN215062949U (en) | Energy-saving low-carbon refrigerating device for data machine room | |
| CN219577187U (en) | Outdoor micro-cabinet energy-saving temperature-control air conditioner | |
| CN217250138U (en) | Heat exchange tube wet film coating device | |
| CN219937153U (en) | Energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210720 |