CN115200125A - High-efficient low temperature refrigeration air conditioning unit - Google Patents
High-efficient low temperature refrigeration air conditioning unit Download PDFInfo
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- CN115200125A CN115200125A CN202211118461.XA CN202211118461A CN115200125A CN 115200125 A CN115200125 A CN 115200125A CN 202211118461 A CN202211118461 A CN 202211118461A CN 115200125 A CN115200125 A CN 115200125A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F11/84—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 using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a high-efficiency low-temperature refrigeration air-conditioning system which comprises an indoor heat exchange unit, an outdoor heat exchange unit, a compressor and a throttle valve, wherein a refrigerant outlet of the indoor heat exchange unit is communicated with a refrigerant inlet of the outdoor heat exchange unit through a pipeline, a refrigerant outlet of the outdoor heat exchange unit is communicated with a refrigerant inlet of the indoor heat exchange unit through a pipeline, the throttle valve is arranged in front of the refrigerant inlet of the indoor heat exchange unit, and the compressor is arranged in front of the refrigerant inlet of the outdoor heat exchange unit; through improving air conditioning unit's heat transfer structure, make its heat transfer effect more abundant, refrigerant flow path can carry out the self-interacting based on heat transfer effect simultaneously, makes the refrigerant distribute in heat transfer structure balancedly, avoids carrying the refrigerant heat transfer of a large amount of cold energies inadequately just to flow back to the pipeline, and air conditioning unit's heat utilization efficiency can promote.
Description
Technical Field
The invention belongs to the technical field of air conditioning units and refrigeration systems, and particularly relates to a high-efficiency low-temperature refrigeration air conditioning unit.
Background
Air-conditioning refrigeration becomes equipment widely applied in various fields such as daily life, logistics transportation, cold chain storage and the like, the application field is wide, the base number is large, the air-conditioning unit is enabled to be widely concerned about the problem of refrigerant, the occupied proportion of the air-conditioning unit on energy consumption is increased, the air-conditioning unit has compression, throttling and multiple heat exchange processes, each process generates loss, the heat energy utilization efficiency of the air-conditioning unit is low, in addition, the external surface of a heat exchange sheet is easy to frost due to direct current of low-temperature refrigerant in a heat exchange assembly of the air conditioner, the frosting is easy to occur especially in an environment with low temperature control requirement, the frosting covers the surface of a heat exchange area, the heat exchange efficiency is reduced, and the frosting phenomenon is further aggravated.
Disclosure of Invention
Based on the technical current situation, the invention aims to provide an efficient low-temperature refrigeration air conditioning unit, the heat exchange effect of the air conditioning unit is more sufficient by improving the heat exchange structure of the air conditioning unit, meanwhile, the flow path of the refrigerant can be self-adjusted based on the heat exchange effect, the refrigerant is distributed in the heat exchange structure in a balanced manner, the problem that the refrigerant carrying a large amount of cold energy cannot exchange heat sufficiently and then flows back to a pipeline is avoided, the heat utilization efficiency of the air conditioning unit is improved, and due to distributed flow of the refrigerant, an extremely low temperature region does not exist in the heat exchange plate, and the outer surface of the heat exchange plate is not easy to frost.
The technical scheme adopted by the invention is as follows: a high-efficiency low-temperature refrigeration air conditioning unit comprises an indoor heat exchange unit, an outdoor heat exchange unit, a compressor and a throttle valve, wherein a refrigerant outlet of the indoor heat exchange unit is communicated with a refrigerant inlet of the outdoor heat exchange unit through a pipeline; the indoor heat exchanger unit provides cold energy for the indoor to adjust the indoor temperature, and the outdoor heat exchanger unit exchanges heat for the refrigerant fluid after being compressed by the compressor to reduce the temperature.
The indoor heat exchanger unit and the outdoor heat exchanger unit are basically the same in structure and respectively comprise a shell, a fan and a flow distribution window, the shell is of a box type structure with two open ends, the fan is installed at an opening at one end of the shell, the flow distribution window is installed at an opening at the other end of the shell, and airflow blown by the fan is blown out of the shell from the flow distribution window after passing through the inner space of the shell; the air distribution window is composed of an outer frame and a plurality of air baffles uniformly distributed in the middle of the outer frame, air flow blown out from the inside of the shell is uniformly dispersed by the air baffles, and the angle of the plane where the surface of each air baffle is located relative to the central axis of the shell can be adjusted so as to adjust the direction of the air flow blown out from the air distribution window.
The heat exchanger is characterized in that a heat exchange assembly is arranged in the shell and consists of a plurality of heat exchange fins which are arranged side by side, the upper end and the lower end of each heat exchange fin form a heat exchange fin inlet and a heat exchange fin outlet respectively, and the heat exchange fin inlet and the heat exchange fin outlet are communicated with a pipeline respectively. Specifically, a first collecting and distributing pipe and a second collecting and distributing pipe are arranged outside the shell, the heat exchange fin inlets are communicated with the first collecting and distributing pipe, the heat exchange fin outlets are communicated with the second collecting and distributing pipe, and the first collecting and distributing pipe and the second collecting and distributing pipe are communicated with the pipeline.
The fin is flat shell structure, and its inside cavity is formed with evenly distributed in order to constitute the space of refrigerant circulation on its surface along the recess of axial extension on the fin, multichannel waved plate has still been arranged on the surface of fin, and multichannel waved plate uses the axial of fin to distribute as array line uniform array, and the transverse direction of the length direction edge fin of each waved plate. Due to the groove structure on the surface of the heat exchange plate, the bottom surface of the corrugated plate, which is contacted with the surface of the heat exchange plate, is fixedly connected only at the surface part of the heat exchange plate, which is not provided with the groove, and a gap is formed between the bottom surface of the corrugated plate and the surface of the heat exchange plate at the groove, so that in the flowing process of the airflow, the fluctuation of the corrugated plate and the gap between the corrugated plate and the surface of the heat exchange plate jointly force the airflow to generate a plurality of backflow, the turbulence degree is increased, and the heat exchange efficiency of the airflow and the heat exchange plate is increased.
Furthermore, the outlet of the heat exchange plate of the indoor heat exchanger unit is connected with a flow control valve, the valve body of the flow control valve is of a flat shell structure, a flow control valve assembly is arranged in the flow control valve assembly, the flow control valve assembly is composed of a first valve plate, a second valve plate and a third valve plate, and the expansion coefficients of the first valve plate and the second valve plate are larger than that of the third valve plate; the first valve plate comprises an attaching part fixedly attached to the inner wall surface of the flow control valve and an elastic plate part with an end part capable of elastically and radially leaving the inner wall surface of the flow control valve for a certain distance, and the first valve plate is fixedly mounted on the inner wall surface of the flow control valve through the attaching part; the second valve plate also comprises an attaching part and an elastic piece part, the attaching part and the elastic piece part of the second valve plate are connected through bending parts, so that the elastic piece part leaves from the inner wall surface of the flow control valve at a second distance in the radial direction, and two ends of the third valve plate are fixedly connected with the end parts of the elastic piece parts of the first valve plate and the second valve plate respectively.
Specifically, the two ends of the third valve plate are both provided with return bending parts with hook-shaped cross sections, the bending directions of the return bending parts at the two ends are opposite, the end part of the return bending part at one end is fixedly connected with the end part of the elastic sheet of the first valve plate, and the end part of the return bending part at the other end is fixedly connected with the end part of the elastic sheet of the second valve plate.
In order to realize that the expansion coefficients of the first valve plate and the second valve plate are both larger than the expansion coefficient of the third valve plate, the first valve plate and the second valve plate can be made of copper base material alloy, the third valve plate can be made of iron base material alloy, and the expansion coefficients of the first valve plate and the second valve plate can be set to be the same.
The technical scheme of the invention has the advantages that:
(1) The surface structure of the heat exchange plate is combined with the corrugated plates through the grooves, so that the surface area of the heat exchange plate is increased, and a plurality of eddy currents are formed when airflow flows through the surface of the heat exchange plate, so that sufficient contact heat exchange is realized, and the heat exchange efficiency is improved;
(2) The flow control valve is arranged at the outlet of the heat exchange plate, when the heat exchange effect of a certain heat exchange plate is poor, the temperature of the refrigerant in the heat exchange plate can still be low, the flow control valve automatically closes the flow passage area of the outlet of the heat exchange plate, when the heat exchange effect of the certain heat exchange plate is good, the temperature of the refrigerant in the heat exchange plate is high, and the flow passage area of the outlet of the heat exchange plate is automatically increased by the flow control valve, so that the refrigerant fluid is evenly distributed according to the actual heat exchange effect of the heat exchange plate, the cold energy of the refrigerant is fully utilized, and the energy utilization rate of the whole air conditioning unit is improved.
Drawings
FIG. 1 is a schematic view of the overall system of the air conditioning assembly of the present invention;
FIG. 2 is a schematic diagram of the heat exchanger unit of the air conditioning unit of the present invention;
FIG. 3 is a schematic diagram showing the structure of a heat exchange unit of the air conditioning unit of the present invention in a disassembled state;
FIG. 4 is a schematic diagram of a heat exchange assembly of the air conditioning unit of the present invention;
FIG. 5 is a schematic view of a heat exchanger fin configuration of the air conditioning unit of the present invention;
FIG. 6 is a schematic view of a flow control valve configuration of the air conditioning assembly of the present invention;
fig. 7 is a schematic diagram of the operating principle of the flow control valve of the air conditioning unit of the present invention, wherein (a) is a schematic diagram of the open state of the flow control valve, and (b) is a schematic diagram of the gradually closed state of the flow control valve;
in the figure: 1. the heat exchanger comprises an indoor heat exchanger unit, 2, an outdoor heat exchanger unit, 3, a compressor, 4, a throttling valve, 5, a pipeline, 6, a refrigerant tank, 7, a shell, 8, a fan, 9, a flow distribution window, 10, a heat exchange assembly, 11, a collecting and distributing pipe, 12, heat exchange plates, 13, a flow control valve, 14, a first valve plate, 15, a second valve plate, 16 and a third valve plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present invention is a schematic view of an overall system of an air conditioning unit, and the high efficiency low temperature refrigeration air conditioning unit of the present invention includes an indoor heat exchanger unit 1, an outdoor heat exchanger unit 2, a compressor 3, and a throttle valve 4, where the indoor heat exchanger unit 1 and the outdoor heat exchanger unit 2 are connected to each other through a pipeline 5, specifically, an outlet of the compressor 3 is communicated to a refrigerant inlet of the outdoor heat exchanger unit 2 through the pipeline 5, refrigerant fluid whose temperature is increased after being compressed and pressurized exchanges heat with outdoor airflow in the outdoor heat exchanger unit 2 to reduce the temperature of the refrigerant fluid, a refrigerant outlet of the outdoor heat exchanger unit 2 is communicated with a refrigerant inlet of the indoor heat exchanger unit 1 through the pipeline 5, and the throttle valve 4 is installed in front of the refrigerant inlet of the indoor heat exchanger unit 1 to further throttle and reduce the temperature of the refrigerant fluid flowing through, the indoor heat exchanger unit 1 provides cooling capacity for indoor to adjust the indoor temperature, and the refrigerant outlet of the indoor heat exchanger unit 1 is communicated with an inlet of the compressor 3 through a pipeline to return the refrigerant fluid after releasing the cooling capacity to the compressor for compression, thereby completing a cycle. Referring to fig. 1, a refrigerant tank 6 is also installed in the circulation line to store refrigerant fluid.
In the present invention, the structures of the indoor heat exchanger unit 1 and the outdoor heat exchanger unit 2 are substantially the same, wherein fig. 2 and fig. 3 illustrate specific structural features of the heat exchanger unit by taking the indoor heat exchanger unit 1 as an example, refer to fig. 2 and fig. 3, fig. 2 is a structural schematic view of the heat exchanger unit of the air conditioner unit of the present invention, fig. 3 is a structural schematic split view of the heat exchanger unit of the air conditioner unit of the present invention, the heat exchanger unit includes a box-type housing 7 with two open ends, a fan 8 is installed at an opening at one end of the housing 7, a distribution window 9 is installed at an opening at the other end of the housing 7, the fan 8 blows air from the distribution window 9 to the outside of the housing after passing through the space inside of the housing 7, the distribution window 9 is composed of an outer frame and a plurality of wind shields uniformly distributed in the middle of the outer frame, the wind shields uniformly disperse the air flow blown from the inside of the housing 7, and the angle of the plane of the wind shields relative to the central axis of the housing can be adjusted, so as to adjust the direction of the air flow blown from the distribution window 9.
A heat exchange assembly 10 is arranged inside the shell 7, the heat exchange assembly 10 is formed by arranging a plurality of heat exchange plates 12 side by side, and the upper end and the lower end of each heat exchange plate 12 are respectively formed as an inlet and an outlet, in fig. 3, the lower ends of the heat exchange plates 12 are formed as inlets, the inlets of the heat exchange plates 12 extend out of the shell 7 from the bottom wall of the shell 7, the upper ends of the heat exchange plates 12 are formed as outlets, and the outlets of the heat exchange plates 12 extend out of the shell 7 from the top wall of the shell 7; the upper surface and the lower surface of the shell 7 are also provided with collecting and distributing pipes 11, the collecting and distributing pipes 11 on the lower surface divide the refrigerant fluid which flows through the throttle valve after being boosted and cooled into each heat exchange fin 12, and the collecting and distributing pipes 11 on the upper surface converge the refrigerant fluid flowing out from the outlets of the heat exchange fins 12 and then convey the refrigerant fluid into the pipeline 5.
FIG. 4 is a schematic structural diagram of a heat exchange assembly of the air conditioning unit of the present invention, and FIG. 5 is a schematic structural diagram of a heat exchange fin of the air conditioning unit of the present invention; referring to fig. 4 and 5, the heat exchanger plate 12 is a flat shell structure, the interior of the heat exchanger plate 12 is hollow to form a space for refrigerant to flow through, and grooves which are uniformly distributed on the surface of the heat exchanger plate 12 and extend along the axial direction are formed on the heat exchanger plate, and the total area of the outer surface of the heat exchanger plate 12 is relatively increased by the grooves; the heat exchanger is characterized in that a plurality of wave plates are further arranged on the outer surface of the heat exchange plates 12 and are uniformly distributed along the axial array of the heat exchange plates 12, the length direction of each wave plate is along the transverse direction of the heat exchange plates 12, the distance between every two adjacent heat exchange plates 12 is equal to the height of each wave plate, air blown by a fan passes through gaps among the heat exchange plates 12, in the air flow flowing process, the fluctuation of the wave plates can guide air flow to flow in a zigzag mode, in addition, due to the groove structures on the surfaces of the heat exchange plates 12, the bottom surfaces of the wave plates, which are in contact with the surfaces of the heat exchange plates 12, are only fixedly connected on the surface parts, which do not form grooves, of the heat exchange plates, gaps are formed between the bottom surfaces of the wave plates and the surfaces of the heat exchange plates, in the air flow flowing process, the fluctuation of the wave plates and the gaps between the wave plates force the air flow to generate a plurality of backflow together, the fluidity is increased, and the heat exchange efficiency of the air flow and the heat exchange plates 12 is increased.
The outlet of the heat exchange plate 12 is connected with a flow control valve 13, the valve body of the flow control valve 13 is of a flat shell structure, and a flow control valve assembly is arranged in the flow control valve 13, referring to fig. 6, the flow control valve assembly is a structural schematic diagram of the flow control valve of the air conditioning unit, the flow control valve assembly is composed of a first valve plate 14, a second valve plate 15 and a third valve plate 16, and the expansion coefficients of the first valve plate 14 and the second valve plate 15 are both greater than that of the third valve plate 16; the first valve plate 14 comprises an attachment part attached and fixed on the inner wall surface of the flow control valve 13 and an elastic plate part with an end part capable of elastically and radially leaving the inner wall surface of the flow control valve 13 for a certain distance, and the first valve plate 14 is fixedly installed (for example, welded) on the inner wall surface of the flow control valve 13 through the attachment part; the second valve plate 15 also comprises an attaching part and an elastic piece part, the attaching part and the elastic piece part of the second valve plate 15 are connected through a bending part, the elastic piece part leaves from the inner wall surface of the flow control valve 13 in the radial direction by a second distance, the second distance enables the elastic piece of the second valve plate 15 and the elastic piece of the first valve plate 14 to form a gap, the third valve plate 16 is installed in the gap, two ends of the third valve plate 16 are fixedly connected with the end parts of the elastic piece parts of the first valve plate 14 and the second valve plate 15 respectively, specifically, two ends of the third valve plate 16 are both provided with return bending parts with hook-shaped cross sections, the bending directions of the return bending parts at the two ends are opposite, the end part of the return bending part at one end is fixedly welded with the end part of the elastic piece of the first valve plate 14, and the end part of the return bending part at the other end is fixedly welded with the end part of the elastic piece of the second valve plate 15.
Fig. 7 is a schematic diagram of an operating principle of a flow control valve of an air conditioning unit according to the present invention, wherein (a) is a schematic diagram of a state of the flow control valve, and (b) is a schematic diagram of a state after the flow control valve is gradually closed, and the following describes in detail the operating principle of the flow control valve in the technical solution of the present invention with reference to fig. 7 as follows: the first valve plate 14, the second valve plate 15 and the third valve plate 16 are preferably metal alloy valve plates, the expansion coefficients of the first valve plate 14 and the second valve plate 15 are greater than the expansion coefficient of the third valve plate 16, if the first valve plate 14 and the second valve plate 15 are made of copper alloy, and the third valve plate 16 is made of iron alloy, in the whole heat exchange assembly of the air conditioning unit, along with the fact that air flow passes through each heat exchange plate 12, the heat exchange effects of different heat exchange plates 12 and the air flow are different, the temperature of refrigerant in part of the heat exchange plates 12 with good heat exchange effect is increased more, the temperature change range of refrigerant in part of the heat exchange plates 12 with poor heat exchange effect is small, and the refrigerant fluid carrying a large amount of cold energy still flows through the heat exchange plates and then flows back to a pipeline, so that the cold energy is consumed, and the flow control valve 13 is arranged at the outflow port of the heat exchange plates 12 in the air conditioning unit, when the temperature of the refrigerant fluid flowing through the flow control valve 13 is high, the expansion coefficients of the first valve plate 14, the second valve plate 15 and the third valve plate 16 are larger, the expansion coefficient of the expansion valve plate 14 is attached to the inner wall surface of the second valve plate 13, and the expansion coefficient of the expansion valve plate 13 is obviously larger; when the temperature of the refrigerant fluid flowing through the flow control valve 13 is low (i.e., the heat exchange effect is poor), the larger the contraction degree of the first valve sheet 14 and the second valve sheet 15 is, the more the third valve sheet 16 is forced to be pulled and inclined, the whole valve sheet assembly changes to the valve closing state, i.e., the state shown in fig. 7 (b), and the lower the temperature is, the more the valve closing state is significant, the smaller the flow passage area of the flow control valve 13 that can circulate is, the smaller the refrigerant flow in the corresponding heat exchange sheet 12 becomes, the refrigerant fluid is forced to be distributed in the heat exchange sheet with the good heat exchange effect, and the cold energy is fully utilized. And the cold energy supplied in the heat exchange sheet after the flow of the refrigerant is reduced in unit time is reduced, so that the heat exchange efficiency is relatively improved, the temperature of the refrigerant flowing through the flow control valve 13 is gradually increased, the valve opening of the flow control valve 13 is gradually increased, the flow of the refrigerant is increased, and the effects of self-regulation of the flow and improvement of the total heat exchange efficiency are achieved.
According to actual needs, the inlets of the heat exchange fins 12 can also be connected with flow control valves 13, so that refrigerants are distributed into the heat exchange fins of the heat exchange assembly 10 as required, and the cold energy of the refrigerants is fully utilized; alternatively, the inlet of the plate 12 is simply a flat shell structure that is connected to extend outside the housing 7.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and changes in equivalent structure or equivalent flow, or direct or indirect application to other related fields without creative efforts based on the technical solutions of the present invention may be made within the scope of the present invention.
Claims (6)
1. A high-efficiency low-temperature refrigeration air conditioning unit comprises an indoor heat exchange unit, an outdoor heat exchange unit, a compressor and a throttle valve, wherein a refrigerant outlet of the indoor heat exchange unit is communicated with a refrigerant inlet of the outdoor heat exchange unit through a pipeline;
the indoor heat exchanger unit provides cold energy for the indoor space, and the outdoor heat exchanger unit exchanges heat and reduces the temperature for the refrigerant fluid compressed by the compressor;
the indoor heat exchanger unit comprises a shell, a fan and a flow distribution window, wherein the shell is of a box type structure with two open ends, the fan is installed at the opening at one end of the shell, the flow distribution window is installed at the opening at the other end of the shell, and the fan blows airflow to the outside of the shell from the flow distribution window after passing through the inner space of the shell;
a heat exchange assembly is arranged in the shell and consists of a plurality of heat exchange sheets which are arranged side by side, the upper end and the lower end of each heat exchange sheet are respectively formed into a heat exchange sheet inlet and a heat exchange sheet outlet, and the heat exchange sheet inlet and the heat exchange sheet outlet are respectively communicated with a pipeline;
the heat exchange plate is of a flat shell structure, the interior of the heat exchange plate is hollow so as to form a space for the circulation of a refrigerant, grooves which are uniformly distributed on the surface of the heat exchange plate and extend along the axial direction are formed in the heat exchange plate, a plurality of corrugated plates are also arranged on the outer surface of the heat exchange plate, the corrugated plates are uniformly distributed in an array mode by taking the axial direction of the heat exchange plate as an array line, and the length direction of each corrugated plate is along the transverse direction of the heat exchange plate;
the outlet of the heat exchange plate is connected with a flow control valve, the valve body of the flow control valve is of a flat shell structure, a flow control valve component is arranged in the flow control valve component, the flow control valve component is composed of a first valve plate, a second valve plate and a third valve plate, and the expansion coefficients of the first valve plate and the second valve plate are larger than that of the third valve plate; the first valve plate comprises an attaching part attached and fixed on the inner wall surface of the flow control valve and an elastic plate part with an end part capable of elastically and radially leaving the inner wall surface of the flow control valve for a certain distance, and the first valve plate is fixedly installed on the inner wall surface of the flow control valve through the attaching part; the second valve plate also comprises an attaching part and an elastic piece part, the attaching part and the elastic piece part of the second valve plate are connected through bending parts, so that the elastic piece part leaves from the inner wall surface of the flow control valve at a second distance in the radial direction, and two ends of the third valve plate are fixedly connected with the end parts of the elastic piece parts of the first valve plate and the second valve plate respectively.
2. The air conditioning assembly as recited in claim 1 further characterized in that a first collecting and distributing duct and a second collecting and distributing duct are disposed outside of said housing, said inlet of said fins being in communication with said first collecting and distributing duct, and said outlet of said fins being in communication with said second collecting and distributing duct.
3. The air conditioning unit according to claim 1, wherein the third valve plate has two ends each having a bent back portion with a hook-shaped cross section, and the bent back portions at the two ends have opposite bending directions, wherein the end of the bent back portion at one end is fixedly connected to the end of the elastic piece of the first valve plate, and the end of the bent back portion at the other end is fixedly connected to the end of the elastic piece of the second valve plate.
4. The air conditioning assembly according to claim 1, wherein the air distribution window is composed of an outer frame and a plurality of air deflectors uniformly distributed in the middle of the outer frame, the air deflectors uniformly distribute the air flow blown out from the inside of the housing, and the angle of the plane of the air deflectors relative to the central axis of the housing is adjustable.
5. The air conditioning unit according to claim 1, further characterized in that the outdoor heat exchanger unit also includes a casing, a fan and a distribution window, and the installation structure of the casing, the fan and the distribution window is the same as that of the indoor heat exchanger unit, the casing of the outdoor heat exchanger unit is also provided with a heat exchange assembly inside, the heat exchange assembly is composed of a plurality of heat exchange fins arranged side by side, the upper end and the lower end of each heat exchange fin are respectively composed of a heat exchange fin inlet and a heat exchange fin outlet, and the heat exchange fin inlet and the heat exchange fin outlet are respectively communicated with the pipeline.
6. The air conditioning unit of claim 1, further characterized in that the first and second flaps are made of an alloy of copper base material and the third flap is made of an alloy of iron base material.
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| CN202211118461.XA CN115200125B (en) | 2022-09-15 | 2022-09-15 | High-efficient low temperature refrigeration air conditioning unit |
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| CN202211118461.XA CN115200125B (en) | 2022-09-15 | 2022-09-15 | High-efficient low temperature refrigeration air conditioning unit |
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| JPH01108482A (en) * | 1987-10-19 | 1989-04-25 | Hitachi Metals Ltd | Piezoelectric flow control valve |
| CN102121760A (en) * | 2011-04-12 | 2011-07-13 | 广东机电职业技术学院 | Parallel flow air conditioner and processing method thereof |
| CN102954634A (en) * | 2011-08-18 | 2013-03-06 | 苏州三星电子有限公司 | Thermostatic expansion valve |
| CN208124956U (en) * | 2018-03-19 | 2018-11-20 | 贵州永红航空机械有限责任公司 | A kind of heat exchanger fin of waveform microchannel structure |
| CN109441599A (en) * | 2018-11-20 | 2019-03-08 | 汽解放汽车有限公司 | A kind of device and method adjusting exhaust gas shunt volume |
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Denomination of invention: An efficient low-temperature refrigeration air conditioning unit Effective date of registration: 20230525 Granted publication date: 20221118 Pledgee: Shandong Wucheng Rural Commercial Bank Co.,Ltd. Pledgor: Changxing Group Co.,Ltd. Registration number: Y2023980041667 |
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