CN112856588B - Air conditioner indoor unit and air conditioner - Google Patents
Air conditioner indoor unit and air conditioner Download PDFInfo
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- CN112856588B CN112856588B CN202110093592.6A CN202110093592A CN112856588B CN 112856588 B CN112856588 B CN 112856588B CN 202110093592 A CN202110093592 A CN 202110093592A CN 112856588 B CN112856588 B CN 112856588B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 101
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 238000004804 winding Methods 0.000 claims description 20
- 238000004378 air conditioning Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 description 32
- 230000000694 effects Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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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
- F24F13/24—Means for preventing or suppressing noise
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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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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application relates to the technical field of throttling, discloses machine in air conditioning, includes: indoor heat exchanger still includes: the throttling part of the throttling element is a spiral pipe, the spiral pipe is wound on the outer surface of the air outlet pipe of the indoor heat exchanger, and a liquid outlet of the throttling element is connected with an air inlet pipe of the indoor heat exchanger. The application provides an install spiral tube's throttling element in the air conditioning indoor set, reduced the noise of throttle in-process, increased the velocity of flow of refrigerant, improved indoor heat exchanger's heat exchange efficiency. Meanwhile, the spiral pipe type throttling element is wound on the outer surface of the air outlet pipe of the indoor heat exchanger, so that heat exchange is carried out between the refrigerant in the spiral pipe and the refrigerant in the air outlet pipe of the indoor heat exchanger, and the temperature of the refrigerant in the spiral pipe is reduced. The application also discloses an air conditioner.
Description
Technical Field
The application relates to the technical field of throttling, for example to an air conditioner indoor unit and an air conditioner.
Background
At present, in an air conditioning system, a condenser of an outdoor unit of an air conditioner and an evaporator of an indoor unit of the air conditioner are communicated through a connecting pipe, and a throttling and pressure reducing device is required to be arranged between the condenser and the evaporator so that a refrigerant reaches a state required by system circulation.
The throttling and pressure reducing device comprises a small hole throttling device or a capillary throttling device and the like. For example, the orifice throttling device refers to a pressure reduction occurring after a liquid flowing in a pipe passes through a valve, a slit, an orifice or the like having a suddenly reduced channel cross section, that is, throttling decompression is performed by utilizing a local resistance loss generated in the orifice throttling device by the liquid. With the miniaturization of the external shape of the air conditioner indoor unit and the reduction of noise, a throttle pressure reducing device is generally installed in the air conditioner outdoor unit.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
after passing through the throttling and pressure reducing device, the refrigerant is changed from a liquid state into a gas-liquid mixed state, the temperature is reduced, and then the refrigerant is conveyed to an indoor unit of the air conditioner through a connecting pipe, the length of the connecting pipe is generally more than 3 meters, in the process, the refrigerant in the gas-liquid mixed state flows in the connecting pipe, so that large pressure loss and flow velocity loss can be generated, and the heat exchange capacity of a refrigerating system is reduced. However, if the throttling pressure reducing device is installed in the indoor unit of the air conditioner to avoid such pressure loss and flow rate loss, the throttling pressure reducing device generates large noise during the throttling process, which may degrade user experience.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides an air conditioner indoor unit and an air conditioner, and aims to solve the problems that a throttling device cannot be installed in the air conditioner indoor unit due to noise generated in a throttling process and cannot exchange heat with an indoor heat exchanger.
In some embodiments, the indoor unit of an air conditioner includes an indoor heat exchanger, and further includes: the throttling part of the throttling element is a spiral pipe, the spiral pipe is wound on the outer surface of an air outlet pipe of the indoor heat exchanger, and a liquid outlet of the throttling element is connected with an air inlet pipe of the indoor heat exchanger.
In some embodiments, the outlet pipe includes a winding section having an outer surface wound with the spiral pipe, wherein the winding section sequentially includes, in a flow direction of the refrigerant in the winding section: the first end is close to the air outlet of the indoor heat exchanger and close to the liquid outlet of the throttling element; and the second end is close to the liquid inlet of the throttling element.
In some embodiments, the throttle portion comprises: the front section throttling spiral pipe is directly communicated with the liquid inlet of the throttling element; and the rear section throttling spiral pipe is directly communicated with the front section throttling spiral pipe, the rear section throttling spiral pipe is directly communicated with a liquid outlet of the throttling element, and the front section throttling spiral pipe is wound on the outer surface of an air outlet pipe of the indoor heat exchanger.
In some embodiments, the length of the front section choke coil is greater than or equal to the length of the rear section choke coil.
In some embodiments, the inner diameter of the forward throttling coil is greater than or equal to the inner diameter of the aft throttling coil.
In some embodiments, the throttle portion comprises: a first choke coil; the second throttling spiral pipe is connected with the first throttling spiral pipe in parallel; and the third throttling spiral pipe is connected with the first throttling spiral pipe and the second throttling spiral pipe in series and is communicated with the air inlet pipe of the indoor heat exchanger, the air outlet pipe of the indoor heat exchanger comprises a first branch pipe and a second branch pipe which are connected in parallel, the first throttling spiral pipe is wound on the outer surface of the first branch pipe, and the second throttling spiral pipe is wound on the outer surface of the second branch pipe.
In some embodiments, the length of the first and second choke coils is less than or equal to the length of the third choke coil.
In some embodiments, the inner diameter of the first and second choke coils is greater than or equal to the inner diameter of the third choke coil.
In some embodiments, the indoor unit of the air conditioner further includes a liquid separation element connected to the liquid outlet of the throttling element.
In some embodiments, the air conditioner comprises an air conditioner indoor unit as described above.
In some embodiments, the air conditioner further comprises an air conditioner outdoor unit and a compressor, wherein an outdoor heat exchanger in the air conditioner outdoor unit is directly communicated with the throttling liquid-distributing assembly of the air conditioner indoor unit through a connecting pipe.
The air conditioner indoor unit and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the throttling part of the throttling element in the air-conditioning indoor unit provided by the embodiment of the disclosure is a spiral pipe spirally wound along the length direction, and when a refrigerant flows through the spiral pipe, the resistance along the way is overcome, the pressure is reduced, and then the throttling function is realized.
According to the throttling element provided by the embodiment of the disclosure, the refrigerant flows in the spiral pipe in a rotating manner, and the flowing speed of the refrigerant in the spiral pipe is favorably improved under the action of centrifugal force, so that the flow speed of the refrigerant at the air inlet of the evaporator is improved, and the heat exchange effect of the evaporator is favorably improved.
In the throttling process of the small hole throttling device, a refrigerant flows through the small hole throttling device to generate a large amount of eddy currents, the eddy currents easily generate large noise, the requirement of a user on low noise of the indoor unit cannot be met, and the small hole throttling device cannot be installed on the indoor unit. According to the throttling element provided by the embodiment of the disclosure, the refrigerant rotates and flows in the spiral pipe, the pressure is uniformly reduced along the flowing direction of the refrigerant, a larger vortex cannot be generated, the possibility of generating noise is reduced, the requirement of a user on low noise of the air-conditioning indoor unit is met, and the throttling element can be installed on the air-conditioning indoor unit. Furthermore, pressure loss and flow velocity loss in the connecting pipe caused by the fact that the throttling device is installed on the outdoor unit are avoided, and the heat exchange capacity of the refrigerating system is improved.
The throttling element that this disclosed embodiment provided, refrigerant flow in the spiral pipe internal rotation, and the liquid outlet through throttling element sprays and gets into minute liquid component, makes the gas-liquid mixture of refrigerant more even in minute liquid component. On the basis, the volume of the cavity of the liquid separating element is reduced, the structure of the liquid separating element is simplified, the miniaturization of the indoor air conditioner is facilitated, and the cost of the indoor air conditioner is reduced.
In the air-conditioning indoor unit provided by the embodiment of the disclosure, the spiral tubular throttling part of the throttling element is wound on the outer surface of the air outlet pipe of the indoor heat exchanger, so that the refrigerant in the spiral part of the throttling element can exchange heat with the refrigerant in the air outlet pipe of the indoor heat exchanger, the temperature of the refrigerant in the spiral pipe is reduced, and the cooling efficiency of the throttling element on the refrigerant is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a throttling element provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another throttling element provided by an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of another throttling element provided by an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another throttling element provided by an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a throttling and liquid-separating assembly provided by the embodiment of the disclosure;
FIG. 6 is a schematic diagram illustrating the refrigerant flow conditions of a throttling and liquid distributing assembly according to an embodiment of the disclosure;
FIG. 7 is a schematic view of a structure of a liquid separation element provided by an embodiment of the disclosure;
FIG. 8 is a schematic structural view of another liquid separation element provided by an embodiment of the disclosure;
FIG. 9 is a schematic structural view of another liquid-separating element provided by embodiments of the present disclosure;
FIG. 10 is a schematic diagram of another dispensing element provided by embodiments of the present disclosure;
FIG. 11 is a schematic view of a spiral pipe wound around an outlet pipe of an evaporator according to an embodiment of the present disclosure;
fig. 12 is a schematic structural view of an air conditioner according to an embodiment of the present disclosure;
fig. 13 is a schematic structural diagram of an air conditioner according to an embodiment of the present disclosure;
fig. 14 is a schematic structural diagram of an air conditioner according to an embodiment of the present disclosure.
Reference numerals:
1: a throttling element; 11: a liquid inlet; 12: a liquid outlet; 13: a throttle section; 1301: a first thread; 1302: a second thread; 131: a first choke coil; 1311: a first front section throttling spiral pipe; 1312: a first rear section throttle spiral pipe; 132: a second choke coil; 1321: a second front throttling spiral pipe; 1322: a second rear section throttle spiral pipe; 133: a third choke coil; 2: a liquid separation element; 21: a liquid separation cavity; 2101: a wire mesh; 2102: a reflective structure; 2103: a flow channel; 3: an evaporator; 301: an air outlet pipe of the evaporator; 4: a condenser; 5: a compressor; 6: a connecting pipe; 7: an air conditioner indoor unit fan; 8: air condensing units fan.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the disclosed embodiments can be understood by those of ordinary skill in the art according to specific situations.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
Embodiments of the present disclosure provide a throttling element, as shown in fig. 1-4.
The throttling element 1 provided by the embodiment of the present disclosure includes a liquid inlet 11, a liquid outlet 12 and a throttling portion 13. Wherein, inlet 11 is used for communicating with the condenser drain pipe, and liquid outlet 12 is used for communicating with the intake pipe of evaporimeter, and throttle portion 13 is the spiral pipe, sets up between inlet 11 and liquid outlet 12, and is linked together with inlet 11 and liquid outlet 12, and wherein, the liquid outlet 12 and the branch liquid component 2 intercommunication of throttling element 1.
Alternatively, the throttle portion 13 is a spiral pipe, and it is understood that the throttle portion 13 is a pipe body spirally wound in a length direction, that is, a flow path of the refrigerant in the spiral pipe is a spiral path. Alternatively, the restriction 13 is a spiral capillary tube, as shown in fig. 1.
The throttling part 13 of the throttling element 1 provided by the embodiment of the disclosure is a spiral pipe spirally wound along the length direction, and when a refrigerant flows through the spiral pipe, the resistance along the way is overcome, the pressure is reduced, and then the throttling function is realized.
According to the throttling element provided by the embodiment of the disclosure, the refrigerant flows in the spiral pipe in a rotating manner, and the flowing speed of the refrigerant in the spiral pipe is favorably improved under the action of centrifugal force, so that the flow speed of the refrigerant at the air inlet of the evaporator is improved, and the heat exchange effect of the evaporator is favorably improved.
According to the throttling element provided by the embodiment of the disclosure, the refrigerant rotates and flows in the spiral pipe, the pressure is uniformly reduced along the flowing direction of the refrigerant, a larger vortex cannot be generated, the possibility of generating noise is reduced, the requirement of a user on low noise of the indoor unit of the air conditioner is met, and the throttling element can be installed on the indoor unit of the air conditioner. Furthermore, when the throttling element provided by the embodiment of the disclosure is installed in an indoor unit of an air conditioner, pressure loss and flow velocity loss caused in a connecting pipe when the throttling device is installed in an outdoor unit are avoided, and the heat exchange capacity of a refrigerating system is improved.
According to the throttling element provided by the embodiment of the disclosure, the refrigerant flows in the spiral pipe in a rotating manner, and is sprayed into the liquid separating element 2 through the liquid outlet 12 of the throttling element 1, so that the gas and liquid of the refrigerant in the liquid separating element 2 are mixed more uniformly, as shown in fig. 6. On the basis, the volume of the cavity of the liquid separation element 2 is reduced, the structure of the liquid separation element 2 is simplified, the miniaturization of the air-conditioning indoor unit is facilitated, and the cost of the air-conditioning indoor unit is reduced.
Alternatively, the flow rate and mass flow of refrigerant within the throttling element may be adjusted by adjusting the tube inner diameter, tube length, and/or thread diameter of the helical tube. Optionally, the inner diameter of the pipe of the spiral pipe is smaller than or equal to 8mm, the contact area between the refrigerant and the pipe wall of the spiral pipe is increased, the on-way resistance of the refrigerant in the spiral pipe is increased, and the throttling effect of the spiral pipe on the refrigerant is improved.
Compared with a capillary throttling element, the spiral throttling element provided by the embodiment of the disclosure has the advantages that the refrigerant is acted by a centrifugal force in the process of flowing along the spiral flow channel, the flowing speed of the refrigerant in the spiral throttling element is further improved than that in the capillary throttling element, and thus the pressure drop effect of the spiral throttling element is further increased.
At present, capillary tube throttling elements are also arranged in an air conditioner indoor unit, but the arrangement is to ensure that heat exchange of each flow path of an evaporator of the air conditioner indoor unit is uniform, a refrigerant needs to flow through a liquid separator and then flows into capillary tubes of each branch, and meanwhile, a throttling device of an air conditioner outdoor unit cannot be eliminated, so that the number of parts of the air conditioner is large, and the cost of the air conditioner is increased. The throttling element provided by the embodiment of the disclosure can be used for being installed in an air conditioner indoor unit for throttling, other throttling elements do not need to be installed in an air conditioner outdoor unit, and the cost of the air conditioner is reduced. Moreover, the throttling element provided by the embodiment of the disclosure does not need to additionally increase the design space of the air-conditioning indoor unit, and compared with a small hole throttling scheme, the throttling element does not increase devices, and is more beneficial to the miniaturization of the air-conditioning indoor unit.
Alternatively, two adjacent threads of the volute are in direct contact.
Two adjacent threads of the spiral pipe are in direct contact, that is, the spiral pipe is tightly wound in the length direction, and no gap exists between the two adjacent threads, as shown in fig. 1, the first thread 1301 and the second thread 1302 adjacent to the spiral pipe are in direct contact, so that the centrifugal force of the refrigerant in the spiral pipe is increased, the flow velocity of the refrigerant in the spiral pipe is increased, and the pressure drop effect of the spiral pipe type throttling element 1 on the refrigerant is increased.
Optionally, the throttle portion 13 includes: the front section throttling spiral pipe is directly communicated with the liquid inlet 11; and the back section throttling spiral pipe is directly communicated with the front section throttling spiral pipe, and the back section throttling spiral pipe is directly communicated with the liquid outlet 12, wherein the inner diameter of the front section throttling spiral pipe is larger than or equal to that of the back section throttling spiral pipe.
Optionally, the inner diameters of the front section throttling spiral pipes are the same, the inner diameters of the rear section throttling spiral pipes are the same, and the inner diameters of the front section throttling spiral pipes are larger than the inner diameters of the rear section throttling spiral pipes, that is, the inner diameters of the spiral pipes are reduced in two stages. Alternatively, the inner diameter and length of the front-stage throttling coil and the inner diameter and length of the rear-stage throttling coil may be adjusted according to the throttling demand for the refrigerant. According to the difference of spiral pipe internal diameter, carry out further grading with the spiral pipe, obtain anterior segment throttle spiral pipe, middle section throttle spiral pipe and back end throttle spiral pipe, wherein, the internal diameter of anterior segment throttle spiral pipe is greater than the internal diameter of middle section throttle spiral pipe, and the internal diameter of middle section throttle spiral pipe is greater than the internal diameter of back end throttle spiral pipe, promptly, the internal diameter of spiral pipe divides tertiary the reduction. Similarly, more levels of gradient-decreasing volutes are available.
The internal diameter of the pipeline before the liquid inlet 11 of the throttling element 1 is larger, namely, the internal diameter of the pipeline before the inlet of the spiral pipe is larger, and the difference with the internal diameter of the spiral pipe is larger. Optionally, the inner diameter of the spiral pipe is gradually reduced in a gradient manner from the liquid inlet 11, so that the noise and vibration caused by local gasification of the refrigerant due to the fact that the refrigerant enters the spiral pipe from a pipeline in front of the liquid inlet 11 of the throttling element 1 and descends in a step-by-step manner are avoided. Namely, the embodiment of the present disclosure provides the spiral-tube throttling element 1 with the inner diameter gradually reduced in a gradient manner, so that noise and vibration in the throttling process of the refrigerant are reduced, and the spiral-tube throttling element is more suitable for being installed in an air-conditioning indoor unit, and meets the requirement of a user on low noise of the air-conditioning indoor unit.
Optionally, the restriction 13 includes a first restriction coil 131 and a second restriction coil 132, wherein the first restriction coil 131 is connected in parallel with the second restriction coil 132, as shown in fig. 2.
The first and second throttle coils 131 and 132 are connected in parallel, and refrigerant may flow through both the first and second throttle coils 131 and 132, such that both parallel throttle coils throttle refrigerant at the same time. Compare in the embodiment that uses a spiral pipe to carry out the throttle, adopt the spiral pipe of two parallelly connected intercommunications, can reduce the internal diameter of first throttle spiral pipe 131 and second throttle spiral pipe 132, improved the refrigerant flow in first throttle spiral pipe 131 and second throttle spiral pipe 132 with the frictional resistance of pipeline, and then improved the whole throttle effect of spiral pipe. Alternatively, the inner diameter of the first throttle coil 131 is equal to the inner diameter of the second throttle coil 132, and the length of the first throttle coil 131 is equal to the length of the second throttle coil 132, which improves the uniformity of the coil throttling the refrigerant.
Optionally, the first throttle coil 131 includes a first front-stage throttle coil 1311 and a first back-stage throttle coil 1312 in direct communication, wherein an inner diameter of the first front-stage throttle coil 1311 is greater than an inner diameter of the first back-stage throttle coil 1312, and the second throttle coil 132 includes a second front-stage throttle coil 1321 and a second back-stage throttle coil 1322 in direct communication, wherein an inner diameter of the second front-stage throttle coil 1321 is greater than an inner diameter of the second back-stage throttle coil 1322, as shown in fig. 3.
Optionally, the outlet of the first back-stage throttle coil 1312 is disposed near an end of the second back-stage throttle coil 1322, and the outlet of the second back-stage throttle coil 1322 is disposed near an end of the first back-stage throttle coil 1312, as shown in fig. 3. Optionally, the first throttle coil 131 and the second throttle coil 132 are located adjacent to each other. In this way, the outlets of the two throttling spiral pipes are close to each other, and the refrigerants flowing out of the two throttling spiral pipes can be mixed with each other in the liquid separating element 2, so that the mixing uniformity of the refrigerants in the liquid separating element 2 is further improved.
The first throttle coil 131 includes a first front-stage throttle coil 1311 and a first rear-stage throttle coil 1312, the inner diameter of which is gradually decreased, and the second throttle coil 132 includes a second front-stage throttle coil 1321 and a second rear-stage throttle coil 1322, the inner diameter of which is gradually decreased. The internal diameters of the first throttling spiral pipe 131 and the second throttling spiral pipe 132 which are communicated in parallel are all reduced step by step, so that the throttling effect of the spiral pipes is improved, meanwhile, the noise and the vibration in the throttling process of the refrigerant are reduced, and the user experience is improved.
According to the difference of the inner diameters of the spiral pipes, the first throttling spiral pipe 131 is further classified to obtain a first front throttling spiral pipe 1311, a first middle throttling spiral pipe and a first rear throttling spiral pipe 1312, wherein the inner diameter of the first front throttling spiral pipe 1311 is larger than that of the first middle throttling spiral pipe, and the inner diameter of the first middle throttling spiral pipe is larger than that of the first rear throttling spiral pipe 1312, namely, the inner diameter of the first throttling spiral pipe 131 is reduced in three stages. Similarly, more gradient-decreasing first throttle coil 131 may be available to further reduce noise and vibration during throttling of the refrigerant.
Similarly, according to the difference of the inner diameters of the spiral pipes, the second throttling spiral pipe 132 is further classified to obtain a second front-section throttling spiral pipe 1321, a second middle-section throttling spiral pipe and a second rear-section throttling spiral pipe 1322, wherein the inner diameter of the second front-section throttling spiral pipe 1321 is larger than that of the second middle-section throttling spiral pipe, and the inner diameter of the second middle-section throttling spiral pipe is larger than that of the second rear-section throttling spiral pipe 1322, that is, the inner diameter of the second throttling spiral pipe 132 is reduced in three stages. Similarly, more gradient reducing second coil 132 may be available to further reduce noise and vibration during throttling of the refrigerant.
Alternatively, the coil may include three or more throttling coils in parallel communication such that the refrigerant is throttled simultaneously by the three or more throttling coils in parallel communication. Alternatively, the greater the number of throttling coils in parallel communication, the smaller the inner diameter of the single throttling coil. The throttling effect of the spiral pipe on the refrigerant is improved. Optionally, three or more throttling spiral pipes which are communicated in parallel are all the throttling spiral pipes with gradually reduced inner diameters, so that noise and vibration in the throttling process of the refrigerant are reduced. The number of the throttling spiral pipes connected in parallel and the inner diameter grading level of a single throttling spiral pipe are not limited too much in the embodiment of the disclosure.
Optionally, the inner diameter of the first front throttling coil 1311 is equal to the inner diameter of the second front throttling coil 1321, the length of the first front throttling coil 1311 is equal to the length of the second front throttling coil 1321, the inner diameter of the first rear throttling coil 1312 is equal to the inner diameter of the second rear throttling coil 1322, and the length of the first rear throttling coil 1312 is equal to the length of the second rear throttling coil 1322, so that the uniformity of refrigerant throttling by the coils is improved.
Optionally, the throttling element further comprises a third throttling coil 133, the third throttling coil 133 being in series communication with the first throttling coil 131 and the second throttling coil 132, as shown in fig. 4.
Alternatively, the threads of the first throttle coil 131 are not in direct contact with the threads of the third throttle coil 133, and the threads of the second throttle coil 132 are not in direct contact with the threads of the third throttle coil 133. In the throttling element, the refrigerant is throttled for the first time through the first throttling spiral tube 131 and the second throttling spiral tube 132 which are connected in parallel, and then throttled for the second time through the third throttling spiral tube 133, so that the refrigerant is throttled step by step, and the noise and vibration in the throttling process are further reduced.
Alternatively, the throttling element 1 may further include a fourth throttling coil, which is in series communication with the third throttling coil 133, and the fourth throttling coil is not in direct contact with the thread of the third throttling coil 133, i.e., the refrigerant is throttled three times in the throttling element, reducing noise and vibration during throttling. The embodiment of the present disclosure does not specifically limit the number of the series connection of the choke coils in the choke element 1.
Optionally, the inner diameters of the first and second throttle coils 131 and 132 are greater than or equal to the inner diameter of the third throttle coil 133.
The inside diameter of the first throttle coil 131 is equal to the inside diameter of the second throttle coil 132 and the inside diameters of the first throttle coil 131 and the second throttle coil 132 are greater than the inside diameter of the third throttle coil 133 as shown in fig. 4. In the step-by-step throttling process, the inner diameter of the throttling spiral pipes connected in series is reduced, and the throttling effect on the refrigerant is improved while the noise in the throttling process is reduced.
The application also provides a throttling liquid-distributing component.
Optionally, the throttling and separating assembly comprises the throttling element 1, and the separating element 2, as shown in fig. 5 and 6.
Optionally, the liquid separation element 2 includes a liquid separation cavity 21, a first end of the liquid separation cavity 21 is directly communicated with the liquid outlet 12 of the throttling element 1, and a second end is provided with a plurality of liquid separation branch pipes, wherein the liquid separation cavity 21 is hollow, as shown in fig. 7.
At present, in order to improve the liquid separation effect of the liquid separation element, a structure for optimizing the flow separation is usually arranged in the liquid separation cavity of the liquid separation element, for example, the liquid separation element with a silk screen 2101 arranged in the liquid separation cavity, as shown in fig. 8, the liquid separation element with a reflection structure 2102 arranged in the liquid separation cavity, as shown in fig. 9, the liquid separation element with a flow channel 2103 arranged in the liquid separation cavity, as shown in fig. 10, and the like. According to the spiral pipe type flow dividing element provided by the embodiment of the disclosure, the refrigerant flows in a spiral pipe in a spiral manner, and enters the liquid dividing element 2 in a spraying manner under the action of centrifugal force, so that the speed of the refrigerant entering the liquid dividing element 2 and the gas-liquid mixing effect of the refrigerant in the liquid dividing element 2 are improved. The structure that need not to set up the aforesaid and optimize the reposition of redundant personnel in the minute liquid cavity 21 of minute liquid component 2 that this disclosed embodiment provided can play fine minute liquid effect. It can be seen that the throttling element 1 provided by the embodiment of the disclosure simplifies the internal construction of the liquid separating element 2. Meanwhile, the flow rate of the refrigerant flowing into the liquid separation element 2 is increased, the inner diameter and/or the length of the liquid separation cavity 21 of the liquid separation element 2 can be reduced, namely, the volume of the liquid separation element 2 is reduced, and the miniaturization of the air conditioner indoor unit is facilitated. The term "the liquid separation chamber 21 is hollow" as used herein means that the liquid separation chamber 21 is not provided with the above-described structure for optimizing the flow distribution.
Alternatively, a plurality of liquid separation branch pipes of the liquid separation element 2 are respectively communicated with the evaporator 3 through the aforementioned spiral pipe, as shown in fig. 13. The refrigerant is further throttled, the flow rate of the refrigerant entering the evaporator 3 is improved, and the heat exchange effect of the evaporator 3 is improved.
This application provides one kind simultaneously and includes the indoor set of air conditioning of aforementioned throttling element or throttle divides liquid subassembly.
The throttling element or the throttling liquid-separating component provided by the embodiment of the disclosure can be installed at the inlet end of the evaporator 3 of the indoor unit of the air conditioner, so that the pressure loss caused in the connecting pipe when the throttling device is installed in the outdoor unit is avoided, and the heat exchange capacity of the refrigerating system is improved. Meanwhile, the throttling element provided by the embodiment of the disclosure reduces noise generated in the throttling process of the refrigerant, and meets the requirement of a user on silencing of the indoor unit of the air conditioner.
Alternatively, the indoor unit of an air conditioner includes an indoor heat exchanger and a throttling element 1, wherein the throttling portion 13 of the throttling element 1 of the indoor heat exchanger is a spiral pipe, the spiral pipe is wound on the outer surface of the air outlet pipe 301 of the indoor heat exchanger, and the throttling element 1 is connected with the air inlet pipe of the indoor heat exchanger, as shown in fig. 11 and 14.
The throttle element 1 is connected to the intake pipe of the indoor heat exchanger, either directly or indirectly. For example, the indirect connection may be such that the throttling element 1 is connected to the intake pipe of the indoor heat exchanger via the liquid separation element 2.
The refrigerant is for about 36 ℃ at the temperature that gets into before the liquid subassembly is divided in the throttle, namely, the temperature of the inlet 11 department of spiral throttle component 1 is about 36 ℃, and after the liquid component 2 throttle cooling is divided in the spiral throttle, the temperature of the liquid outlet 12 department of spiral throttle component 2 is less than 15 ℃. An indoor heat exchanger, which may also be referred to as an evaporator 3. The temperature of the refrigerant in the outlet pipe 301 of the evaporator is about 12 ℃. It can be seen that the temperature difference between the temperature of the outlet duct 301 of the evaporator and the temperature of the helical throttling element 1 is large. The spiral pipe winding sets up in the surface of the outlet duct 301 of evaporimeter, makes the refrigerant in the spiral pipe and the refrigerant in the outlet duct 301 of evaporimeter carry out heat exchange, is favorable to reducing the temperature of the refrigerant in the spiral pipe, and then has reduced the temperature of the refrigerant that flows into in the evaporimeter 3, has increased the heat transfer difference in temperature of evaporimeter 3 with user's indoor environment, has improved the heat transfer volume of evaporimeter 3.
Optionally, the spiral pipe is wound on the outer surface of the air outlet pipe of the indoor heat exchanger, and the outer surface of the spiral pipe is in contact with the outer surface of the air outlet pipe of the indoor heat exchanger, so that the heat exchange capacity of the spiral pipe and the air outlet pipe of the indoor heat exchanger is improved, and the temperature of the refrigerant in the spiral pipe is further reduced.
Optionally, part or all of the spiral pipe is wound on the outer surface of the outlet pipe of the indoor heat exchanger.
Optionally, the air outlet pipe of the indoor heat exchanger comprises a winding section, the outer surface of which is wound with a spiral pipe, and the winding section sequentially comprises a first end and a second end along the flowing direction of the refrigerant in the winding section, wherein the first end is close to the air outlet of the indoor heat exchanger and close to the liquid outlet 12 of the throttling element 1; the second end is close to the inlet 11 of the restriction element 1.
The first end of the winding section is closer to the air outlet of the indoor heat exchanger than the second end of the winding section, and the first end of the winding section is closer to the liquid outlet 12 of the throttling element 1. The second end of the winding section is closer to the inlet port 11 of the restriction element 1 than the first end of the winding section. The refrigerant flows from the first end to the second end in the winding section, and flows from the liquid inlet 11 to the liquid outlet 12 in the spiral tube, so that the refrigerant flows in the winding section in the opposite direction to the spiral tube, as shown in fig. 11, and the heat exchange capacity between the winding section and the spiral tube is improved.
Optionally, the throttling portion 13 includes a front throttling spiral pipe and a rear throttling spiral pipe, the front throttling spiral pipe is directly communicated with the liquid inlet 11 of the throttling element 1, the rear throttling spiral pipe is directly communicated with the front throttling spiral pipe, and the rear throttling spiral pipe is directly communicated with the liquid outlet 12 of the throttling element 1, wherein the front throttling spiral pipe is wound on the outer surface of the air outlet pipe of the indoor heat exchanger.
The spiral pipe is partially wound on the outer surface of the air outlet pipe of the indoor heat exchanger, the front section throttling spiral pipe of the spiral pipe is wound on the outer surface of the air outlet pipe of the indoor heat exchanger, and the rear section throttling spiral pipe of the spiral pipe is not wound on the outer surface of the air outlet pipe of the indoor heat exchanger. The difference in temperature of the refrigerant temperature in the anterior segment throttle spiral pipe and the refrigerant temperature in the outlet duct of indoor heat exchanger is great, the anterior segment throttle spiral pipe of spiral pipe twines in the surface of the outlet duct of indoor heat exchanger, be favorable to improving heat exchange efficiency between the two, and simultaneously, the back end throttle spiral pipe of spiral pipe does not twine in the surface of the outlet duct of indoor heat exchanger, the time of the heat exchange of refrigerant in the outlet duct and the interior refrigerant of spiral pipe has been shortened, when effectively cooling down to the interior refrigerant of spiral pipe, be unlikely to change the state of the interior refrigerator of outlet duct, be favorable to keeping whole refrigerating system's pressure stability.
Optionally, the length of the front section throttle coil is greater than or equal to the length of the rear section throttle coil.
The length of the front section of the throttling spiral pipe is greater than that of the rear section of the throttling spiral pipe, so that the time of heat exchange between the refrigerant in the air outlet pipe and the refrigerant in the spiral pipe is further shortened, and the pressure stability of the whole refrigerating system is favorably maintained.
Optionally, the inner diameter of the forward stage restriction coil is greater than or equal to the inner diameter of the aft stage restriction coil.
The inner diameter of an air outlet pipe of the indoor heat exchanger is larger than that of the spiral pipe. The inner diameter of the front throttling spiral pipe which is used for exchanging heat with the air outlet pipe of the indoor heat exchanger is larger, so that the heat exchange efficiency between the spiral pipe and the indoor heat exchanger in unit time is facilitated, and the temperature of a refrigerant in the spiral pipe is reduced.
Optionally, the throttling part 13 includes a first throttling coil 131, a second throttling coil 132 and a third throttling coil 133, wherein the first throttling coil 131 is connected in parallel with the second throttling coil 132, the first throttling coil 131 is directly communicated with the liquid inlet of the throttling part with the second throttling coil 132, and the third throttling coil 133 is connected in series with the first throttling coil 131 and the second throttling coil 132 and is communicated with the air inlet pipe of the indoor heat exchanger. The air outlet pipe of the indoor heat exchanger comprises a first branch pipe and a second branch pipe which are connected in parallel. Wherein, the first throttling coil 131 is wound on the outer surface of the first branch pipe, and the second throttling coil 132 is wound on the outer surface of the second branch pipe.
The first throttling coil 131 is wound on the outer surface of the first branch pipe, the second throttling coil 132 is wound on the outer surface of the second branch pipe, and the third throttling coil 133 does not wind the outlet duct of the indoor heat exchanger. As described above, the inner diameter of the outlet pipe of the indoor heat exchanger is larger than that of the spiral pipe. The air outlet pipe of the indoor heat exchanger is divided, so that the contact area of the refrigerant in the air outlet pipe of the indoor heat exchanger and the refrigerant in the spiral pipe is increased, and the heat exchange efficiency between the refrigerant and the spiral pipe is improved. Meanwhile, only the first and second spiral throttle pipes 131 and 132 are disposed on the outer surface of the outlet pipe, which is advantageous to improve the pressure stability of the entire refrigerating system.
Optionally, the length of the first throttle coil 131 and the length of the second throttle coil 132 are less than or equal to the length of the third throttle coil 133.
The length of the first and second choke coils 131 and 132 is less than the length of the third choke coil 133, which further shortens the heat exchange time between the refrigerant in the outlet pipe and the refrigerant in the coil, and is beneficial to maintaining the pressure stability of the whole refrigeration system.
Optionally, the inner diameter of the first throttle coil 131 and the inner diameter of the second throttle coil 132 are greater than or equal to the inner diameter of the third throttle coil 133.
The inner diameter of the first throttle coil 131 and the inner diameter of the second throttle coil 132 are greater than the inner diameter of the third throttle coil 133.
The inner diameter of the air outlet pipe of the indoor heat exchanger is larger than that of the spiral pipe. The first spiral throttle pipe 131 and the second spiral throttle pipe 132, which are heat-exchanged with the outlet pipe of the indoor heat exchanger, have a large inner diameter, which is beneficial to improving the heat exchange efficiency between the first spiral throttle pipe and the second spiral throttle pipe in unit time, and further reducing the temperature of the refrigerant in the spiral pipe.
The present application also provides an air conditioner including the aforementioned air conditioning indoor unit, as shown in fig. 12 to 14.
Alternatively, the air conditioner includes an air conditioner indoor unit, an air conditioner outdoor unit, a compressor 5, an air conditioner indoor unit fan 7, and an air conditioner outdoor unit fan 8 as previously described. The outdoor heat exchanger in the outdoor unit of the air conditioner is directly communicated with the throttling liquid-separating component of the indoor unit of the air conditioner through the connecting pipe 6. The outdoor heat exchanger may also be referred to as a condenser 4.
The throttling element 1 is not arranged at the outlet of the outdoor heat exchanger of the outdoor unit of the air conditioner, but is directly connected with the throttling liquid-distributing component of the indoor unit of the air conditioner through the connecting pipe, so that the pressure loss and the flow velocity loss of a refrigerant caused by the fact that the throttling device is arranged in the connecting pipe when the outdoor unit is arranged are avoided, and the heat exchange capacity of the refrigerating system is improved.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (6)
1. An air conditioner comprises an indoor air conditioner unit, an outdoor air conditioner unit and a compressor, wherein the indoor air conditioner unit comprises an indoor heat exchanger, and the air conditioner unit is characterized by further comprising a throttling liquid-separating component, the outdoor heat exchanger in the outdoor air conditioner unit is directly communicated with the throttling liquid-separating component of the indoor air conditioner unit through a connecting pipe, other throttling elements do not need to be installed on the outdoor air conditioner unit, the throttling liquid-separating component comprises a throttling element and a liquid-separating element, the throttling liquid-separating component is installed at the inlet end of the indoor heat exchanger of the indoor air conditioner unit,
the throttling part of the throttling element is a spiral pipe, the spiral pipe is wound on the outer surface of an air outlet pipe of the indoor heat exchanger, the outer surface of the spiral pipe is in contact with the outer surface of the air outlet pipe of the indoor heat exchanger, so that heat exchange is carried out between refrigerant in the spiral pipe and refrigerant in the air outlet pipe of the indoor heat exchanger, the temperature of the refrigerant in the spiral pipe is reduced, the temperature of the refrigerant flowing into the indoor heat exchanger is further reduced, a liquid outlet of the throttling element is connected with an air inlet pipe of the indoor heat exchanger, two adjacent threads of the spiral pipe are in direct contact, the inner diameter of the spiral pipe is smaller than or equal to 8mm, the refrigerant overcomes on-way resistance in the spiral pipe, and the pressure is reduced,
the throttle portion includes:
a first choke coil;
the first throttling spiral pipes are connected in parallel; and the combination of (a) and (b),
a third throttling helix tube which is connected with the first throttling helix tube and the second throttling helix tube in series and is communicated with an air inlet pipe of the indoor heat exchanger,
the air outlet pipe of the indoor heat exchanger comprises a first branch pipe and a second branch pipe which are connected in parallel,
wherein, first throttle spiral pipe winding set up in the surface of first branch pipe, second throttle spiral pipe winding set up in the surface of second branch pipe, the internal diameter of first throttle spiral pipe and the internal diameter of second throttle spiral pipe are greater than the internal diameter of third throttle spiral pipe.
2. The air conditioner of claim 1, wherein the outlet duct comprises a winding section having the spiral pipe wound on an outer surface thereof, wherein the winding section sequentially comprises, in a flow direction of the refrigerant in the winding section:
the first end is close to the air outlet of the indoor heat exchanger and close to the liquid outlet of the throttling element; and the combination of (a) and (b),
and the second end is close to the liquid inlet of the throttling element.
3. The air conditioner according to claim 1, wherein the throttle portion comprises: the front section throttling spiral pipe is directly communicated with a liquid inlet of the throttling element; and (c) and (d),
the back section throttling spiral pipe is directly communicated with the front section throttling spiral pipe, and the back section throttling spiral pipe is directly communicated with a liquid outlet of the throttling element,
the front throttling spiral pipe is wound on the outer surface of an air outlet pipe of the indoor heat exchanger.
4. The air conditioner according to claim 3,
the length of the front section throttling spiral pipe is larger than or equal to that of the rear section throttling spiral pipe.
5. The air conditioner according to claim 3,
the inner diameter of the front section throttling spiral pipe is larger than or equal to that of the rear section throttling spiral pipe.
6. The air conditioner according to claim 1,
the length of the first and second choke coils is less than or equal to the length of the third choke coil.
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| CN202110093592.6A CN112856588B (en) | 2021-01-22 | 2021-01-22 | Air conditioner indoor unit and air conditioner |
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| CN210399143U (en) * | 2019-08-23 | 2020-04-24 | 宁波奥克斯电气股份有限公司 | Indoor unit and air conditioner |
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