CN221238018U - Ultrasonic defrosting and detecting integrated air source heat pump evaporator - Google Patents
Ultrasonic defrosting and detecting integrated air source heat pump evaporator Download PDFInfo
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- CN221238018U CN221238018U CN202322891352.8U CN202322891352U CN221238018U CN 221238018 U CN221238018 U CN 221238018U CN 202322891352 U CN202322891352 U CN 202322891352U CN 221238018 U CN221238018 U CN 221238018U
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- ultrasonic
- heat exchange
- exchange tube
- flexible porous
- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Defrosting Systems (AREA)
Abstract
The utility model relates to an air source heat pump evaporator integrating ultrasonic defrosting and detecting, which comprises a shell, a heat exchange tube, a variable frequency generator, an ultrasonic transducer, an ultrasonic transmitter, an ultrasonic receiver, an amplitude transformer, a vibration transmission plate and a metal flexible porous fin, wherein the shell is arranged on the shell; the heat exchange tube array is positioned in the shell, a plurality of metal flexible porous fins are arranged on the heat exchange tube array, and the vibration transmission plate is horizontally arranged on the heat exchange tube array and connected with each metal flexible porous fin; the variable frequency generator is electrically connected with the ultrasonic transducer, the output end of the ultrasonic transducer is connected with one end of the amplitude transformer, and the other end of the amplitude transformer is in close contact with the vibration transmission plate; the ultrasonic transmitter and the ultrasonic receiver are positioned on the shell, and the ultrasonic transmitter is electrically connected with the ultrasonic transducer. The evaporator monitors the thickness of the frost layer through ultrasonic waves and enables the heat exchange tube and the metal flexible porous fins to vibrate, so that the air source heat pump evaporator can realize frost measurement and defrosting through one set of system on the basis of having a heat exchange function, the defrosting is more thorough, and secondary frosting is avoided.
Description
Technical Field
The utility model relates to the field of evaporator defrosting, in particular to an air source heat pump evaporator with integrated ultrasonic defrosting and detecting function.
Background
The air source heat pump heats by taking the ambient air as a low-level heat source, has a higher energy efficiency coefficient, and is widely concerned and used. When the evaporator of the air source heat pump works, heat is required to be extracted from the outside, and the evaporator is easy to frost in a low-temperature high-humidity environment, so that the energy efficiency performance of the unit is affected.
At present, the defrosting technology for the air source heat pump evaporator mainly has the following problems: 1. the defrosting method mainly comprises reverse circulation defrosting, electric heating defrosting, hot gas bypass defrosting and ultrasonic defrosting, so that two sets of devices are generally used for completing the defrosting and the defrosting, and the defrosting method is high in equipment cost, large in size and inconvenient to install. 2. When the ultrasonic defrosting is performed, the vibration amplitude of the heat exchange pipeline of the evaporator is low, frosting cannot be completely removed, and the frosting which is vibrated off is easy to remain on the pipeline and the fins to cause secondary frosting.
Therefore, the utility model provides the ultrasonic defrosting and detecting integrated air source heat pump evaporator, which combines the defrosting and detecting structures together to be arranged on the evaporator, so that the air source heat pump evaporator has the defrosting and detecting functions on the basis of having a heat exchange function, and the problems of incomplete defrosting and secondary frosting are effectively solved.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide the air source heat pump evaporator with the integrated ultrasonic defrosting and detecting function.
The technical scheme adopted for solving the technical problems is as follows:
An air source heat pump evaporator integrating ultrasonic defrosting and detecting comprises a shell and a heat exchange tube array positioned in the shell; the evaporator is characterized by further comprising a variable frequency generator, an ultrasonic transducer, an ultrasonic transmitter, an ultrasonic receiver, an amplitude transformer, a vibration transmission plate and a metal flexible porous fin;
The plurality of metal flexible porous fins are arranged on the heat exchange tube array, and the vibration transmission plate is horizontally arranged on the heat exchange tube array and connected with each metal flexible porous fin; the variable frequency generator is electrically connected with the ultrasonic transducer, the output end of the ultrasonic transducer is connected with one end of the amplitude transformer, and the other end of the amplitude transformer is in close contact with the vibration transmission plate; the ultrasonic transmitter and the ultrasonic receiver are positioned on the shell, and the ultrasonic transmitter is electrically connected with the ultrasonic transducer.
Further, the evaporator also comprises a fan, and the fan is arranged on the shell and is opposite to the heat exchange tube array and the metal flexible porous fins.
Further, the metal flexible porous fin is made of aluminum fibers, and the thickness is 0.2-0.5 mm.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the utility model, the thickness of frost is monitored by utilizing an ultrasonic ranging principle through an ultrasonic transmitter and an ultrasonic receiver, electric energy is converted into mechanical energy through an ultrasonic transducer to generate ultrasonic wave, the amplitude of the ultrasonic wave is further amplified by an amplitude transformer, the vibration is transmitted to a heat exchange tube and a metal flexible porous fin through a vibration transmission plate, and finally the heat exchange tube and the metal flexible porous fin are driven to vibrate, so that the air source heat pump evaporator can realize frost measurement and defrosting through a set of system on the basis of having a heat exchange function, the problems of frost removal, frost removal and the like caused by the fact that the existing evaporator adopts timing defrosting are solved, and the air source heat pump evaporator can defrost timely and efficiently; the metal flexible porous fins replace the traditional aluminum fins, the metal flexible porous fins are easier to vibrate, and the porous structure is easier to frost and drop.
2. The blower can increase the air flow speed, improve the heat exchange capacity of the evaporator, and simultaneously blow off residual frosting on the heat exchange tube and the metal flexible porous fins, so that the problem of incomplete ultrasonic defrosting is solved, and secondary frosting caused by accumulation of residual frosting on the heat exchange tube and the metal flexible porous fins is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure;
FIG. 2 is a schematic illustration of the overall structure with the housing removed;
FIG. 3 is a schematic illustration of the connection of an ultrasonic transducer to a horn;
FIG. 4 is a cross-sectional view of the metallic flexible porous fin of FIG. 1 taken along the B-B direction;
FIG. 5 is a cross-sectional view of the metallic flexible porous fin of FIG. 1 taken along the direction A-A;
FIG. 6 is a state diagram of a metallic flexible porous fin while vibrating;
FIG. 7 is a control block diagram;
In the figure, 1, a variable frequency generator; 2. an ultrasonic transducer; 3. an ultrasonic emitter; 4. an ultrasonic receiver; 5. a horn; 6. a housing; 7. a heat exchange tube array; 8. a vibration transmission plate; 9. a blower; 10. a metal flexible porous fin.
Detailed Description
Specific examples of the present utility model are given below. The specific examples are provided only for further details of the present utility model and do not limit the scope of the claims.
The utility model provides an air source heat pump evaporator (hereinafter referred to as evaporator, see fig. 1-7) with integrated ultrasonic defrosting and detecting function, which comprises a variable frequency generator 1, an ultrasonic transducer 2, an ultrasonic transmitter 3, an ultrasonic receiver 4, an amplitude transformer 5, a shell 6, a heat exchange tube array 7, a vibration transmission plate 8 and a metal flexible porous fin 10;
The heat exchange tube nest 7 is positioned in the shell 6, and two ends of the heat exchange tube nest 7 are respectively connected with the compressor and the expansion valve of the air source heat pump; a plurality of metal flexible porous fins 10 are sleeved on the heat exchange tube array 7 in an array manner and welded with the heat exchange tube array 7; the vibration transmission plate 8 is horizontally arranged on the heat exchange tube array 7 and is fixedly connected with the heat exchange tube array 7 and all the metal flexible porous fins 10; the variable frequency generator 1 and the ultrasonic transducer 2 are positioned in the shell 6, the variable frequency generator 1 is connected with the ultrasonic transducer 2 through a wire, the output end of the ultrasonic transducer 2 is connected with one end of the amplitude transformer 5, and the other end of the amplitude transformer 5 is tightly contacted with the side surface of the vibration transmission plate 8; the ultrasonic transmitter 3 and the ultrasonic receiver 4 are arranged on the shell 6, the ultrasonic transmitter 3 is connected with the ultrasonic transducer 2 through a wire, the transmitting end of the ultrasonic transmitter 3 and the receiving end of the ultrasonic receiver 4 are opposite to the same heat exchange tube of the heat exchange tube array 7, and the horizontal distances from the heat exchange tube array 7 to the ultrasonic transmitter 3 and the ultrasonic receiver 4 are equal respectively, so that the frost thickness of the heat exchange tube array 7 is monitored; multiple sets of ultrasonic transmitters 3 and ultrasonic receivers 4 can be mounted on the housing 6, and the thickness of the frost layer can be monitored at multiple points.
The variable frequency generator 1 provides electric energy for the ultrasonic transducer 2, the ultrasonic transducer 2 converts the electric energy into mechanical energy, namely ultrasonic waves, the amplitude transformer 5 further amplifies the vibration amplitude of the ultrasonic waves, and the vibration transmission plate 8 drives the metal flexible porous fins 10 to vibrate, so that frosting on the metal flexible porous fins 10 falls off, and the purpose of defrosting is achieved. The metal flexible porous fins 10 not only increase the heat exchange area of the heat exchange tube array, but also compare in traditional fin, the vibration transmission plate 8 more easily drives the vibration of the metal flexible porous fins 10, and the frosting on the metal flexible porous fins 10 shakes off, and the porous structure more easily frosts off, because the metal flexible porous fins 10 and the heat exchange tube array 7 are fixedly connected, the heat exchange tube array 7 can also be driven to vibrate, and the defrosting is more thorough.
The evaporator also comprises a fan 9; the fan 9 is fixedly arranged on the shell 6 and is opposite to the heat exchange tube 7 and the metal flexible porous fins 10, the fan 9 blows off residual frost on the heat exchange tube 7 and the metal flexible porous fins 10, the occurrence of secondary frost formation is avoided, and the fan 9 can also increase the flow speed of air so as to improve the heat exchange capacity of the evaporator. The shell 6 is provided with a plurality of ventilation holes on the side wall provided with the fan 9 and the side wall opposite to the fan 9.
The heat exchange tube nest 7 is coiled in a serpentine shape by adopting a copper tube. The metal flexible porous fin 10 is made of aluminum fibers, has the thickness of 0.2-0.5 mm, ensures certain flexibility and is beneficial to vibration.
The working principle and the working process of the utility model are as follows:
The low-temperature low-pressure refrigerant expanded in the expansion valve of the air source heat pump enters the heat exchange tube array 7 and absorbs the latent heat in the air to be vaporized when flowing through the heat exchange tube array 7, so that the aim of absorbing heat is fulfilled; the gaseous refrigerant flowing out of the heat exchange tube nest 7 is pressurized by the compressor of the air source heat pump, enters the condenser to release heat, and then flows into the expansion valve to complete the cycle.
In the working process of the evaporator, the variable frequency generator 1 converts a 50Hz current provided by a power supply into a high-frequency current of 20kHz-40kHz to supply power for the ultrasonic transducer 2, the ultrasonic transducer 2 drives the ultrasonic transmitter 3 to transmit ultrasonic waves to the heat exchange tube array 7, the ultrasonic receiver 4 receives the ultrasonic waves reflected by the heat exchange tube array 7, the current frost layer thickness is calculated according to the time from the transmission of the ultrasonic waves to the return of the ultrasonic waves by utilizing the ultrasonic ranging principle, if the current frost layer thickness is smaller than a preset threshold value, defrosting is not needed, and the ultrasonic transducer 2 continuously drives the ultrasonic transmitter 3 to transmit the ultrasonic waves to continuously monitor the frost layer thickness; if the thickness of the current frost layer is greater than or equal to a preset threshold value, defrosting is needed, the ultrasonic transducer 2 does not drive the ultrasonic transmitter 3 to work, at the moment, the variable frequency generator 1 converts 50Hz current into high-frequency current which is greater than 20kHz to supply power for the ultrasonic transducer 2, the ultrasonic transducer 2 converts electric energy into mechanical energy to generate ultrasonic waves, the amplitude of vibration of the ultrasonic waves is further increased by the amplitude transformer 5 connected with the ultrasonic transducer 2, and meanwhile, the heat exchange tube 7 and the metal flexible porous fins 10 are driven to vibrate through the vibration transmission plate 8 due to the close contact of the amplitude transformer 5 and the vibration transmission plate 8, so that frost on the heat exchange tube 7 and the metal flexible porous fins 10 is vibrated. Meanwhile, the blower 9 works to blow off residual frost accumulated on the vibration transmission plate 8 and the metal flexible porous fins 10, and after defrosting is completed, the ultrasonic transmitter 3 and the ultrasonic receiver 4 continue to monitor the thickness of the frost layer, so that real-time monitoring and timely defrosting of the thickness of the frost layer are realized.
The utility model is applicable to the prior art where it is not described.
Claims (3)
1. An air source heat pump evaporator integrating ultrasonic defrosting and detecting comprises a shell and a heat exchange tube array positioned in the shell; the evaporator is characterized by further comprising a variable frequency generator, an ultrasonic transducer, an ultrasonic transmitter, an ultrasonic receiver, an amplitude transformer, a vibration transmission plate and a metal flexible porous fin;
The plurality of metal flexible porous fins are arranged on the heat exchange tube array, and the vibration transmission plate is horizontally arranged on the heat exchange tube array and connected with each metal flexible porous fin; the variable frequency generator is electrically connected with the ultrasonic transducer, the output end of the ultrasonic transducer is connected with one end of the amplitude transformer, and the other end of the amplitude transformer is in close contact with the vibration transmission plate; the ultrasonic transmitter and the ultrasonic receiver are positioned on the shell, and the ultrasonic transmitter is electrically connected with the ultrasonic transducer.
2. The ultrasonic defrosting integrated air source heat pump evaporator of claim 1 further comprising a blower mounted on the housing and facing the heat exchange tube array and the metal flexible porous fins.
3. The ultrasonic defrosting integrated air source heat pump evaporator according to claim 1, wherein the metal flexible porous fin is made of aluminum fibers and has a thickness of 0.2-0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322891352.8U CN221238018U (en) | 2023-10-27 | 2023-10-27 | Ultrasonic defrosting and detecting integrated air source heat pump evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322891352.8U CN221238018U (en) | 2023-10-27 | 2023-10-27 | Ultrasonic defrosting and detecting integrated air source heat pump evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221238018U true CN221238018U (en) | 2024-06-28 |
Family
ID=91594036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322891352.8U Active CN221238018U (en) | 2023-10-27 | 2023-10-27 | Ultrasonic defrosting and detecting integrated air source heat pump evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221238018U (en) |
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2023
- 2023-10-27 CN CN202322891352.8U patent/CN221238018U/en active Active
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