CN217685963U - Refrigerant adjusting heat exchanger and air conditioner - Google Patents
Refrigerant adjusting heat exchanger and air conditioner Download PDFInfo
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- CN217685963U CN217685963U CN202220827669.8U CN202220827669U CN217685963U CN 217685963 U CN217685963 U CN 217685963U CN 202220827669 U CN202220827669 U CN 202220827669U CN 217685963 U CN217685963 U CN 217685963U
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Abstract
The application relates to the technical field of air conditioners, and discloses a heat exchanger is adjusted to refrigerant includes: the heat exchanger body is provided with a heat exchange branch; and the liquid storage and distribution device comprises a liquid storage shell, a first refrigerant pipe and a second refrigerant pipe, wherein the liquid storage shell forms a liquid storage and distribution cavity, the first end of the first refrigerant pipe and the first end of the second refrigerant pipe are communicated with the liquid storage and distribution cavity, the first refrigerant pipe is communicated with the heat exchange branch, the liquid storage and distribution device is used for partially storing the refrigerant flowing out of the heat exchange branch in the liquid storage and distribution cavity, the refrigerant passes through the second refrigerant pipe and flows out, and the liquid storage and distribution device is provided with a heating element to heat the refrigerant in the liquid storage and distribution cavity. The quantity and temperature of the refrigerant participating in the refrigerant cycle are adjusted. The application also discloses an air conditioner.
Description
Technical Field
The application relates to the technical field of air conditioners, for example to a refrigerant conditioning heat exchanger and an air conditioner.
Background
The existing air conditioner product models comprise a split type structure and an integrated structure. A split type structure such as an air source heat pump multi-connected air conditioner comprises an indoor unit and an outdoor unit which are respectively arranged indoors, wherein an indoor heat exchanger of the indoor unit and an outdoor heat exchanger of the outdoor unit are directly used for carrying out heat exchange with corresponding side environments, so that the split type structure is a key device of an air conditioner product, and the refrigerating and heating performances of the air conditioner can be directly influenced by the heat exchange efficiency of the heat exchangers. The outdoor environment temperature range of the air conditioner operation is large, and the load variation difference of the air conditioner is also large. The optimal refrigerant quantity required by the air conditioner is different under different outdoor environment temperatures and different loads, but the refrigerant filling quantity in the air conditioner is certain, so that the air conditioner cannot exert the optimal energy efficiency under different operation loads.
In the prior art, a liquid storage tank is arranged between an outdoor heat exchanger and an indoor heat exchanger to adjust a refrigerant participating in circulation in an air conditioner, so that the air conditioner has different refrigerant circulation amounts under different operation loads.
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:
the mode of arranging the liquid storage tank between the outdoor heat exchanger and the indoor heat exchanger needs to arrange valve body structures such as an electromagnetic valve, a capillary tube and the like at two ends of the liquid storage tank, so that the pipeline cost and the control complexity of the air conditioner are improved.
SUMMERY OF THE UTILITY MODEL
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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a refrigerant regulating heat exchanger and an air conditioner, and aims to solve the technical problems that a liquid storage tank is arranged between an indoor heat exchanger and an outdoor heat exchanger, a solenoid valve, a capillary tube and other valve body components need to be arranged in a matching manner, the refrigerant quantity of the air conditioner is complex to regulate, and the like.
In some embodiments, the refrigerant conditioning heat exchanger comprises: the heat exchanger body is provided with a heat exchange branch; and the liquid storage and distribution device comprises a liquid storage shell, a first refrigerant pipe and a second refrigerant pipe, wherein the liquid storage shell forms a liquid storage and distribution cavity, the first end of the first refrigerant pipe and the first end of the second refrigerant pipe are communicated with the liquid storage and distribution cavity, the first refrigerant pipe is communicated with the heat exchange branch pipe, the liquid storage and distribution device is used for partially storing the liquid storage and distribution cavity, the refrigerant passes through the second refrigerant pipe and flows out, and the liquid storage and distribution device is provided with a heating element to heat the refrigerant in the liquid storage and distribution cavity.
In some embodiments, the heating element is disposed in a lower portion of the reservoir housing.
In some embodiments, the liquid storage casing includes a bottom shell, wherein both the first end of the first refrigerant pipe and the first end of the second refrigerant pipe extend into the liquid storage diversion cavity, a distance from the first end of the first refrigerant pipe to the bottom shell is smaller than a distance from the first end of the second refrigerant pipe to the bottom shell, and the heating element is disposed between the first end of the first refrigerant pipe and the bottom shell.
In some embodiments, a distance between the first end of the first refrigerant pipe and the bottom case is greater than or equal to 10 mm.
In some embodiments, the heating element comprises an electromagnetic heating coil.
In some embodiments, the heat exchanger body is provided with a plurality of heat exchange branches, the first refrigerant pipe is communicated with a first part of the heat exchange branches, the second refrigerant pipe is communicated with a second part of the heat exchange branches, and the liquid storage and distribution device is configured to partially store, in the liquid storage and distribution cavity, the refrigerant flowing out of the first part of the heat exchange branches, and then the refrigerant flows into the second part of the heat exchange branches through the second refrigerant pipe.
In some embodiments, the air conditioner includes a refrigerant conditioning heat exchanger as described above.
In some embodiments, the air conditioner further includes a compressor, a four-way valve, and an indoor heat exchange assembly, the refrigerant conditioning heat exchanger is an outdoor heat exchanger, and the air conditioner further includes a control portion configured to: when the air conditioner operates to heat, the heating element is controlled to be started to heat the refrigerant in the liquid storage and distribution cavity, so that the refrigerant in the liquid storage and distribution cavity flows out through the first refrigerant pipe, and the refrigerant circulation quantity participating in the heating working condition is increased.
In some embodiments, the control section is further configured to: when the air conditioner operates in a heating working condition, the heating element is controlled to be started so as to heat the refrigerant in the liquid storage and distribution cavity, the temperature of the refrigerant flowing through the heat exchanger body is increased, and defrosting is performed on the heat exchanger body.
In some embodiments, the indoor heat exchange assembly comprises a plurality of indoor heat exchangers arranged in parallel.
The refrigerant adjusting heat exchanger and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the refrigerant adjusting heat exchanger provided by the embodiment of the disclosure is provided with a liquid storage and distribution device. The liquid storage and distribution device can partially store the refrigerant flowing out of the heat exchange branch of the heat exchanger body in the liquid storage and distribution cavity, and automatically adjusts the refrigerant quantity participating in the refrigerant circulation of the air conditioner, so that the refrigerant circulation quantity of the air conditioner can meet different running loads, and the air conditioner has the optimal running state under different loads.
Simultaneously, stock solution diverging device is provided with heating element, and heating element can heat the liquid refrigerant of stock solution diverging intracavity, has further adjusted the refrigerant volume and the refrigerant temperature of participating in the refrigerant circulation.
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 in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:
fig. 1 is a schematic structural diagram of a refrigerant conditioning heat exchanger according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a refrigerant flow path when the refrigerant conditioning heat exchanger is used as an outdoor heat exchanger under a refrigeration condition according to the embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of a liquid storage and diversion device provided by the embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another liquid storage and distribution device provided by the embodiment of the disclosure;
FIG. 5 is a schematic structural diagram of another liquid storage and distribution device provided by the embodiment of the disclosure;
fig. 6 is a schematic cross-sectional view of a liquid storage and distribution device at a first end of a second refrigerant pipe according to an embodiment of the disclosure;
fig. 7 is a schematic structural diagram of another refrigerant conditioning heat exchanger provided in the embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an air conditioner according to an embodiment of the present disclosure.
Reference numerals are as follows:
1: a heat exchanger body; 2: a liquid storage and distribution device; 3: a liquid separating device; 4: a first portion of the heat exchange branches; 5: a second part of heat exchange branch; 6: a compressor; 7: a four-way valve;
21: a first refrigerant pipe; 211: a first end of a first refrigerant tube; 22: a second refrigerant pipe; 221: a first end of a second refrigerant tube; 23: a liquid storage housing; 231: a bottom case; 24: a liquid full line; 25: a heating element;
81: a first indoor heat exchanger; 82: a second indoor heat exchanger;
91: a first throttling element; 92: a second throttling element; 93: a third throttling element; 94: a fourth throttling element.
Detailed Description
So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. 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 in the claims, and the above-described drawings of embodiments of the present disclosure, 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 under appropriate circumstances such that embodiments of the present disclosure described herein may be made. 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, terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on 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 to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. 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 embodiments of the present disclosure 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.
The embodiment of the disclosure provides an air conditioner.
Generally, an air conditioner includes an indoor heat exchanger, an outdoor heat exchanger, a throttling device and a compressor, the indoor heat exchanger, the outdoor heat exchanger, the throttling device and the compressor are connected through refrigerant pipelines to form a refrigerant circulation loop, and the refrigerant passes through the refrigerant circulation loop along the flow direction set by different operation modes to realize different operation modes such as a refrigeration mode and a heating mode.
Optionally, the air conditioner provided in the embodiment of the present disclosure is an air source heat pump multi-connected air conditioner, as shown in fig. 8, the air conditioner includes a compressor 6, a four-way valve 7, an outdoor heat exchanger, a first indoor heat exchanger 81, and a second indoor heat exchanger 82. The first indoor heat exchanger 81 and the second indoor heat exchanger 82 are connected in parallel. Alternatively, both ends of the first indoor heat exchanger 81 are provided with a first throttling element 91 and a third throttling element 93, respectively, and both ends of the second indoor heat exchanger 82 are provided with a second throttling element 92 and a fourth throttling element 94, respectively.
The embodiment of the disclosure simultaneously provides a refrigerant regulation heat exchanger.
Alternatively, the refrigerant conditioning heat exchanger may be an indoor heat exchanger or an outdoor heat exchanger in the air conditioner. The refrigerant conditioning heat exchanger will be described in detail below as an example of an outdoor heat exchanger.
Optionally, the refrigerant conditioning heat exchanger includes a heat exchanger body 1 and a liquid storage and diversion device 2. As shown in fig. 1-7. The heat exchanger body 1 is provided with a heat exchange branch. The liquid storage and distribution device 2 comprises a liquid storage shell 23, a first refrigerant pipe 21 and a second refrigerant pipe 22, the liquid storage shell 23 forms a liquid storage and distribution cavity, and the first end 211 of the first refrigerant pipe and the first end 221 of the second refrigerant pipe are both communicated with the liquid storage and distribution cavity. The first refrigerant pipe 21 is communicated with the heat exchange branch, and the liquid storage and distribution device 2 is used for partially storing the refrigerant flowing out from the heat exchange branch in the liquid storage and distribution cavity, and then the refrigerant flows out through the second refrigerant pipe 22.
It can be understood that the flow direction of the refrigerant is different when the air conditioner operates in different modes. For example, the first refrigerant pipe 21 may be a refrigerant inflow pipe and the second refrigerant pipe 22 may be a refrigerant outflow pipe in the cooling mode of the air conditioner. In the heating mode of the air conditioner, the second refrigerant pipe 22 may be a refrigerant inflow pipe, and the first refrigerant pipe 21 may be a refrigerant outflow pipe.
When the air conditioner operates in a refrigeration working condition, the air conditioner comprises different refrigeration operation modes such as rated refrigeration, intermediate refrigeration, low-temperature intermediate refrigeration and the like, the loads of the different refrigeration operation modes are different, and the optimal refrigerant quantity in a required refrigerant circulating flow path is also different. The embodiment of the present disclosure provides a heat exchanger provided with a liquid storage and distribution device 2, which can partially store a refrigerant flowing through the heat exchanger to adjust the amount of the refrigerant flowing through the heat exchanger or the refrigerant circulation loop, so that the amount of the refrigerant in the heat exchanger or the refrigerant circulation loop conforms to the operation mode of the current air conditioner, thereby improving the operation capability of the air conditioner under different operation loads, and facilitating the Annual energy consumption rate (APF) of the air conditioner.
Optionally, the liquid storage casing 23 includes a bottom shell 231, wherein the first end 211 of the first refrigerant pipe and the first end 221 of the second refrigerant pipe both extend into the liquid storage diversion cavity, and a distance from the first end 211 of the first refrigerant pipe to the bottom shell 231 is smaller than a distance from the first end 221 of the second refrigerant pipe to the bottom shell 231.
When the air conditioner operates in a refrigeration mode, the refrigerant of the heat exchange branch flows into the liquid storage shunting cavity from the first refrigerant pipe 21 and then flows out from the second refrigerant pipe 22, namely, the long pipe enters the short pipe to flow out, the liquid storage shunting device 2 can partially store the liquid refrigerant flowing into the liquid storage shunting cavity through the first end 211 of the first refrigerant pipe, and after the liquid refrigerant reaches the liquid full line 24, the liquid refrigerant flows out of the liquid storage shunting device 2 through the second refrigerant pipe 22. When the air conditioner is in a motion refrigeration mode, more refrigerants are stored in the liquid storage and flow dividing cavity, and the system refrigeration energy efficiency of the air conditioner is improved, as shown in fig. 4.
When the air conditioner operates in a heating mode, the refrigerant of the heat exchange branch pipe flows into the liquid storage and diversion cavity from the second refrigerant pipe 22 and then flows out from the first refrigerant pipe 21, namely, the short pipe enters the long pipe and then flows out, the refrigerant stored in the liquid storage and diversion cavity is relatively less at the moment, most of the refrigerant flows out through the first refrigerant pipe 21 and participates in the heating circulation process of the air conditioner, the amount of the refrigerant participating in heating circulation is increased, and the heating capacity of the air conditioner is improved.
Optionally, the liquid storage and distribution device is provided with a heating element 25 to heat the refrigerant in the liquid storage and distribution cavity. As shown in fig. 7. Optionally, the heating element 25 comprises a heat pipe or an electromagnetic heating coil.
When the air conditioner operates in a heating mode, the heating element 25 arranged in the liquid storage and flow dividing device is controlled to be started under the working condition of low outdoor environment temperature, such as-7 ℃ or-15 ℃, so that a small part of refrigerant stored in the liquid storage and flow dividing cavity is heated, and the small part of refrigerant participates in heating circulation, the refrigerant quantity participating in heating circulation in the air conditioner is further increased, the heating capacity of the air conditioner is improved, and the indoor environment temperature of a user is improved. Optionally, the first end 211 of the first refrigerant pipe is flared to collect and guide the heated refrigerant to the first refrigerant pipe 21 to participate in the heating cycle.
Optionally, the heating element 25 comprises a first gear, a second gear and a third gear with successively higher heating power. When the outdoor environment temperature is more than-7 ℃ and less than or equal to 0 ℃, controlling the heating element 25 to start a first gear; when the outdoor environment temperature is more than-15 ℃ and less than or equal to-7 ℃, controlling the heating element 25 to start a second gear; and when the outdoor environment temperature is less than or equal to-15 ℃, controlling the heating element 25 to start a third gear. The refrigerant stored in the liquid storage and flow dividing cavity can be rapidly heated and flows out through the first refrigerant pipe 21 to participate in the heating circulation of the air conditioner, so that the heating capacity of the air conditioner under the low-temperature or ultralow-temperature working condition is improved.
Optionally, when the air conditioner operates in a heating working condition, the heating element 25 is controlled to be turned on so as to heat the refrigerant in the liquid storage and distribution cavity, improve the temperature of the refrigerant flowing through the heat exchanger body, and defrost the heat exchanger body.
Optionally, a heating element 25 is provided at a lower portion of the reservoir housing 23. Therefore, the refrigerant at the lower part of the liquid storage and distribution cavity can be better heated, and the heating efficiency is improved. Optionally, the heating element 25 is an electromagnetic heating coil disposed between the first end 211 of the first cooling medium pipe and the bottom case 231 and wound outside the liquid storage casing 23. Like this, can be better to the refrigerant of saving in stock solution reposition of redundant personnel intracavity portion under the mode of heating heat.
Optionally, heat exchanger body 1 is provided with many heat transfer branch roads, stock solution diverging device 2 sets up between many heat transfer branch roads, first refrigerant pipe 21 is linked together with the first part heat transfer branch road 4 in many heat transfer branch roads, second refrigerant pipe 22 is linked together with the second part heat transfer branch road 5 in many heat transfer branch roads, stock solution diverging device 2 is used for carrying out the partial storage back at stock solution reposition of redundant personnel intracavity to the refrigerant that flows out from first part heat transfer branch road 4, the refrigerant flows in second part heat transfer branch road 5 through second refrigerant pipe 22. As shown in fig. 1-6.
The heat exchanger body 1 comprises a plurality of heat exchange branch circuits which are communicated with one another, the plurality of heat exchange branch circuits comprise a first part heat exchange branch circuit 4 and a second part heat exchange branch circuit 5, optionally, when the air conditioner operates in a refrigeration working condition, the first part heat exchange branch circuit 4 is connected with the second part heat exchange branch circuit 5 in series, and the flowing sequence of the refrigerant in the heat exchanger can be that the refrigerant firstly flows through the first part heat exchange branch circuit 4 and then flows through the second part heat exchange branch circuit 5. Optionally, in the usage state of the heat exchanger, the first partial heat exchange branch 4 is arranged above the second partial heat exchange branch 5, as shown in fig. 2. Alternatively, the second partial heat exchange branch 5 may be a subcooling section of a heat exchanger.
The liquid storage and distribution device 2 is of a shell structure with a liquid storage and distribution cavity, and can partially store the refrigerant flowing from the heat exchanger. The aforementioned liquid storage and distribution device 2 is used for partially storing the refrigerant flowing out of the first partial heat exchange branch 4 in the liquid storage and distribution cavity, and the "partial storage" here may be understood as partial storage of the liquid refrigerant flowing out of the first partial heat exchange branch 4. For example, the first part heat transfer branch 4 of heat exchanger flows into the stock solution reposition of redundant personnel intracavity of stock solution diverging device 2 through first refrigerant pipe 21, at this moment, gaseous refrigerant can flow into second part heat transfer branch 5 through the second refrigerant pipe 22 of stock solution diverging device 2, when the liquid refrigerant of stock solution reposition of redundant personnel intracavity reaches more than full liquid line 24, liquid refrigerant also can flow into second part heat transfer branch 5 through second refrigerant pipe 22, and the refrigerant that is less than full liquid line 24 can be stored in stock solution reposition of redundant personnel intracavity, the second part heat transfer branch 5 that does not get into the heat exchanger, namely, the refrigerant circulation system of the air conditioner is not participated in.
Alternatively, the liquid storage and distribution device 2 may be barrel-shaped.
In the air conditioner operation cooling mode, when the outdoor ambient temperature is relatively low, the air conditioner can meet the temperature requirement of the user without exerting the maximum cooling capacity of the air conditioner, such as an intermediate cooling mode or a low-temperature intermediate cooling mode of the air conditioner. The heat exchanger provided by the embodiment of the disclosure can adjust the amount of the refrigerant flowing through the heat exchanger, and adjust the amount of the refrigerant flowing into the refrigerant circulating system, so that the refrigerant entering the evaporator through the throttling device can fully exchange heat in the evaporator, and the operation energy efficiency ratio of the air conditioner is improved.
Optionally, the first refrigerant pipe 21 of the liquid storage and distribution device 2 is a copper pipe having the same inner diameter and material as the refrigerant pipe in the heat exchange branch. Similarly, the second refrigerant pipe 22 of the liquid storage and distribution device 2 is a copper pipe with the same inner diameter and material as the refrigerant pipe in the heat exchange branch.
Optionally, each of the plurality of heat exchange branches includes one or more refrigerant pipes. The number of the refrigerant pipes contained in each heat exchange branch can be the same or different. Optionally, when the heat exchange branch includes a plurality of refrigerant pipes, the plurality of refrigerant pipes are connected in series.
Optionally, a distance h from the first end 211 of the first refrigerant pipe 21 to the bottom shell 231 is greater than or equal to 10 mm, as shown in fig. 5.
When the refrigerant in the first part heat transfer branch road 4 flowed into the stock solution reposition of redundant personnel intracavity through first refrigerant pipe 21, the high pressure of refrigerant can cause the refrigerant turbulence that flows into the stock solution reposition of redundant personnel intracavity, if the refrigerant of turbulent state directly when the second part heat transfer branch road 5 of second refrigerant pipe 22 inflow heat exchanger, can cause the refrigerant circulation system's of air conditioner unstability. The distance h from the first end of the first refrigerant pipe 21 to the bottom shell 231 is greater than or equal to 10 mm, so that the impact of the high-pressure refrigerant on the bottom shell 231 of the liquid storage and distribution device 2 is reduced, the refrigerant turbulence phenomenon in the liquid storage and distribution cavity caused by the high-pressure refrigerant is reduced, the stability of the refrigerant flowing out through the second refrigerant pipe 22 is improved, and the stability of a refrigerant circulating system of the air conditioner is improved.
Optionally, the first refrigerant pipe 21 is linear; and/or the second refrigerant pipe 22 is linear.
The linear first refrigerant pipe 21 can make the refrigerant flow from bottom to top in the liquid storage and distribution device 2, and the instability of the refrigerant circulating system caused by the fact that the refrigerant is turbulent and directly flows into the second refrigerant pipe 22 due to high pressure is reduced. Meanwhile, the linear first refrigerant pipe 21 and/or the linear second refrigerant pipe 22 reduce the volume of the first refrigerant pipe 21 and/or the second refrigerant pipe 22 in the liquid storage and distribution cavity, and further increase the effective liquid storage volume of the liquid storage and distribution cavity. Under the same demand of effective stock solution volume, reduced stock solution diverging device 2's volume, and then be favorable to reducing the volume of heat exchanger.
Optionally, under three refrigeration modes, namely a rated refrigeration mode, an intermediate refrigeration mode and a low-temperature intermediate refrigeration mode, part of the refrigerant flowing out of the first part of the heat exchange branch circuit is stored in the liquid storage branch cavity. Under the rated refrigeration mode, the frequency of the compressor is high, the flow rate of the refrigerant is large, the impact force is large, and the amount of the refrigerant stored in the liquid storage shunting cavity under the rated refrigeration mode is larger than the storage amount under the intermediate refrigeration mode and the low-temperature intermediate refrigeration mode. Therefore, the heat exchanger provided by the embodiment of the disclosure can further adjust the storage capacity of the refrigerant in the refrigerant shunting cavity under different loads by using the frequency of the compressor, the flow rate of the refrigerant and the impact force.
When the air conditioner operates in a refrigeration working condition, the operation parameters of the rated refrigeration mode, the intermediate refrigeration mode and the low-temperature intermediate refrigeration mode are shown in the table 1.
TABLE 1
| Item | Rated refrigeration | Intermediate refrigeration | Low temperature intermediate |
| Refrigerating capacity (W) of air- |
3442.643 | 1669.456 | 1765.894 |
| Refrigerating capacity (W) of air- |
3420 | 1662 | 1778 |
| Power of air-conditioner 1 (W) | 1031.515 | 394.818 | 290.42 |
| Power of air-conditioner 2 (W) | 975 | 373 | 295 |
In table 1, the liquid storage and diversion device 2 is arranged on the outdoor heat exchanger in the air conditioner 1, and the liquid storage and diversion device 2 is not arranged on the heat exchanger in the air conditioner 2. The first refrigerant pipe 21 of the liquid storage and distribution device 2 is linear, and a distance from a first end of the first refrigerant pipe 21 to the bottom case 231 is 10 mm.
In the intermediate refrigeration mode, the higher the power of the air conditioner is, the more advantageous the APF is when the refrigeration capacity meets the national standard requirements, and in the low-temperature intermediate refrigeration mode, the lower the power of the air conditioner is, the more advantageous the APF is when the capacity meets the national standard requirements.
In table 1, in the rated cooling mode, the cooling capacity of the air conditioner 1 is 3442.643W and the power is 1031.515W, and the cooling capacity of the air conditioner 2 is 3420W and the power is 975W; in the intermediate cooling mode, the cooling capacity of the air conditioner 1 is 1669.456W and the power is 394.818W, and the cooling capacity of the air conditioner 2 is 1662W and the power is 373W; in the low-temperature intermediate cooling mode, the cooling capacity of the air conditioner 1 is 1765.894W and the power is 290.42W, and the cooling capacity of the air conditioner 2 is 1778W and the power is 295W.
As can be seen from the data in table 1, compared with the air conditioner 2 without the liquid storage and flow dividing device 2 in the outdoor heat exchanger, the air conditioner 1 with the liquid storage and flow dividing device 2 in the outdoor heat exchanger provided in the embodiment of the present disclosure improves the power of the air conditioner in the intermediate cooling mode, and reduces the power of the air conditioner in the low-temperature intermediate cooling mode. Therefore, the heat exchanger provided with the liquid storage and flow dividing device 2 provided by the embodiment of the disclosure improves the APF of the air conditioner.
Optionally, the number of the second refrigerant pipes 22 is multiple, the number of the heat exchange branches in the second part of heat exchange branch 5 is multiple, and the multiple second refrigerant pipes 22 are respectively communicated with the multiple heat exchange branches in the second part of heat exchange branch 5 one by one.
The second part of the heat exchange branches 5 comprise a plurality of heat exchange branches which are communicated in parallel. The number of the second refrigerant pipes 22 may be plural. The second refrigerant pipes 22 are respectively communicated with the heat exchange branches of the second part of heat exchange branch 5 one by one, so that each heat exchange branch of the second part of heat exchange branch 5 has a second refrigerant pipe 22 corresponding to the heat exchange branch.
When the quantity of second refrigerant pipe 22 is a plurality of, the quantity of the heat transfer branch road in the second part heat transfer branch road 5 is a plurality of, when the high pressure refrigerant that flows out in the first part heat transfer branch road 4 flowed into stock solution reposition of redundant personnel intracavity through first refrigerant pipe 21, because the refrigerant turbulence causes the refrigerant volume that flows into different second refrigerant pipe 22 to be different easily, and then make the heat transfer ability of the second part heat transfer branch road 5 of heat exchanger inhomogeneous, and then reduced the heat transfer homogeneity of heat exchanger.
When the number of the second refrigerant pipes 22 is multiple, and the number of the heat exchange branches in the second part heat exchange branch 5 is multiple, the distance from the first end of the first refrigerant pipe 21 to the bottom shell 231 is greater than or equal to 10 mm, so that the impact of the high-pressure refrigerant and the bottom shell 231 of the liquid storage and distribution device 2 is reduced, the refrigerant turbulence phenomenon in the liquid storage and distribution cavity caused by the high-pressure refrigerant is reduced, and the uniformity of the refrigerant amount flowing into each second refrigerant pipe 22 is improved.
When the air conditioner operates in the refrigeration working condition, taking the number of the heat exchange branches in the second part heat exchange branch 5 as 3 and the number of the second refrigerant pipes 22 as 3 as an example, the outlet temperatures of the 3 heat exchange branches in the second part heat exchange branch 5 in the rated refrigeration mode, the intermediate refrigeration mode and the low-temperature intermediate refrigeration mode are shown in table 2.
TABLE 2
| Item | Rated refrigeration | Intermediate refrigeration | Low temperature intermediate |
| Heat exchange branch 1 (DEG C) | 48.3 | 42.8 | 36.4 |
| Heat exchange branch 2 (DEG C) | 48.4 | 42.9 | 36.6 |
| Heat exchange branch 3 (DEG C) | 43.5 | 41.7 | 34.9 |
The outlet temperatures of the heat exchange branch 1, the heat exchange branch 2, and the heat exchange branch 3 of the second part of heat exchanger branches in the rated refrigeration mode, the intermediate refrigeration mode, and the low-temperature intermediate refrigeration mode are given in table 2.
In table 2, in the rated refrigeration mode, the outlet temperature of the heat exchange branch 1 is 48.3 ℃, the outlet temperature of the heat exchange branch 2 is 48.4 ℃, and the outlet temperature of the heat exchange branch 3 is 43.5 ℃; under the intermediate refrigeration mode, the outlet temperature of the heat exchange branch 1 is 42.8 ℃, the outlet temperature of the heat exchange branch 2 is 42.9 ℃ and the outlet temperature of the heat exchange branch 3 is 41.7 ℃; under the low-temperature intermediate refrigeration mode, the outlet temperature of the heat exchange branch 1 is 36.4 ℃, the outlet temperature of the heat exchange branch 2 is 36.6 ℃ and the outlet temperature of the heat exchange branch 3 is 34.9 ℃.
As can be seen from the data in table 2, in the nominal refrigeration mode, the temperature difference between the maximum outlet temperature and the minimum outlet temperature in the second portion of the heat exchanger branches is only 4.9 ℃; in the intermediate refrigeration mode, the temperature difference between the maximum outlet temperature and the minimum outlet temperature in the second part of the heat exchanger branches is only 1.2 ℃; in the low temperature intermediate refrigeration mode, the temperature difference between the maximum outlet temperature and the minimum outlet temperature in the second portion of the heat exchanger legs is only 1.7 ℃.
Therefore, in the heat exchanger provided by the embodiment of the present disclosure, when in the rated refrigeration mode, the intermediate refrigeration mode and the low-temperature intermediate refrigeration mode, the outlet temperatures of the heat exchange branch 1, the heat exchange branch 2 and the heat exchange branch 3 of the second part of the heat exchanger branches are different from each other. It can be seen that, according to the heat exchanger provided by the embodiment of the present disclosure, when the number of the heat exchange branch circuits in the second heat exchange branch circuits is multiple, and the number of the second refrigerant pipes 22 is multiple, the uniformity of the refrigerant quantity flowing into each second refrigerant pipe 22 is improved, and further, the heat exchange uniformity of the whole heat exchanger in different refrigeration modes is improved.
Optionally, each of the second refrigerant tubes 22 includes a first end extending into the liquid storage and distribution cavity, wherein the first ends of the second refrigerant tubes 22 have the same distance from the bottom shell 231 of the liquid storage shell 23.
The distances from the first ends of the second refrigerant pipes 22 to the bottom shell 231 of the liquid storage shell 23 are the same, so that the uniformity of the amount of refrigerant flowing out of each second refrigerant pipe 22 is further improved. Optionally, the bottom shell 231 of the liquid storage shell 23 is planar.
Optionally, the vertical distances from the first ends of the second refrigerant pipes 22 to the first refrigerant pipe 21 are the same.
The refrigerant flowing into the liquid storage and distribution cavity through the first refrigerant pipe 21 is a high-pressure refrigerant, and the high-pressure refrigerant flows in the liquid storage and distribution cavity easily to form turbulence. The vertical distances from the first ends of the second refrigerant pipes 22 to the first refrigerant pipe 21 are the same, so that the difference of the refrigerant quantity in each second refrigerant pipe 22 caused by refrigerant turbulence is further reduced, and theThe uniformity of the amount of the refrigerant flowing out of each second refrigerant pipe 22 is improved. Fig. 6 is a schematic cross-sectional view of the liquid storage and distribution device at the first end of the second refrigerant pipe. As shown in fig. 6, the number of the second refrigerant pipes 22 is 3, and the vertical distances d from the 3 second refrigerant pipes 22 to the first refrigerant pipe 21 are respectively 1 、d 2 、d 3 . Wherein d is 1 ＝d 2 ＝d 3 。
Optionally, the distance between every two adjacent second refrigerant pipes 22 is equal.
Optionally, the heat exchanger further comprises a liquid separating device 3. The liquid separating device 3 comprises a confluence pipe opening and a plurality of liquid separating branch pipes, wherein the liquid separating branch pipes are communicated with the heat exchange branch pipes in the first part of heat exchange branch pipes 4 one by one, and the confluence opening is communicated with the second end of the first refrigerant pipe 21 of the liquid storage and separating device 2.
First part heat transfer branch 4 includes many heat transfer branch roads, and many heat transfer branch roads in first part heat transfer branch 4 are parallelly connected when the air conditioner operation refrigeration mode and are linked together. Divide a plurality of branch liquid pipes of liquid device 3 and the heat transfer branch road one-to-one intercommunication in the first part heat transfer branch road 4, converge the refrigerant that many heat transfer branch roads in the first part heat transfer branch road 4 flow out to the chamber that converges of liquid device 3 to through the flow converging mouth of pipe that is linked together with the chamber that converges with the refrigerant and flow to the stock solution reposition of redundant personnel intracavity of stock solution diverging device 2. Optionally, the volume of the liquid storage and flow distribution cavity is larger than the volume of the flow converging cavity.
Optionally, the liquid storage and distribution device 2 and the heat exchanger body 1 are of an integrated structure, and the liquid storage and distribution device 2 is arranged on the side portion of the heat exchanger body 1.
In the user state of heat exchanger, divide liquid device 3 and stock solution diverging device 2 and all set up in the lateral part of heat exchanger body 1, and, divide liquid device 3 to set up in the upper portion of stock solution diverging device 2. Optionally, the outlet of each of the first part of heat exchange branches 4 is disposed at the upper part of the plurality of branch liquid dividing pipes of the liquid dividing device 3. Optionally, the first end of the second refrigerant pipe 22 is disposed at the upper portion of the inlet of the heat exchange branch in the second partial heat exchange branch 5. Is beneficial to the flow of the refrigerant in the heat exchanger.
The above description and the 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 shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A refrigerant conditioning heat exchanger, comprising:
the heat exchanger body is provided with a heat exchange branch; and the combination of (a) and (b),
the liquid storage and distribution device comprises a liquid storage shell, a first refrigerant pipe and a second refrigerant pipe, wherein the liquid storage shell forms a liquid storage and distribution cavity, the first end of the first refrigerant pipe and the first end of the second refrigerant pipe are both communicated with the liquid storage and distribution cavity,
wherein the first refrigerant pipe is communicated with the heat exchange branch, the liquid storage and distribution device is used for partially storing the refrigerant flowing out of the heat exchange branch in the liquid storage and distribution cavity, and then the refrigerant flows out of the second refrigerant pipe,
the liquid storage and distribution device is provided with a heating element to heat the refrigerant in the liquid storage and distribution cavity.
2. The refrigerant conditioning heat exchanger as set forth in claim 1,
the heating element is arranged at the lower part of the liquid storage shell.
3. The refrigerant conditioning heat exchanger as set forth in claim 2,
the liquid storage shell comprises a bottom shell,
wherein the first end of the first refrigerant pipe and the first end of the second refrigerant pipe both extend into the liquid storage and diversion cavity, the distance from the first end of the first refrigerant pipe to the bottom shell is less than the distance from the first end of the second refrigerant pipe to the bottom shell,
the heating element is arranged between the first end of the first refrigerant pipe and the bottom shell.
4. The refrigerant conditioning heat exchanger of claim 3,
the distance between the first end of the first refrigerant pipe and the bottom shell is greater than or equal to 10 mm.
5. The refrigerant conditioning heat exchanger as set forth in claim 1,
the heating element comprises an electromagnetic heating coil.
6. The refrigerant conditioning heat exchanger as set forth in claim 1,
the heat exchanger body is provided with a plurality of heat exchange branches,
the first refrigerant pipe is communicated with a first part of heat exchange branches in the plurality of heat exchange branches, the second refrigerant pipe is communicated with a second part of heat exchange branches in the plurality of heat exchange branches, and the liquid storage and distribution device is used for partially storing refrigerants flowing out of the first part of heat exchange branches in the liquid storage and distribution cavity, and then the refrigerants flow into the second part of heat exchange branches through the second refrigerant pipe.
7. An air conditioner characterized by comprising the refrigerant conditioning heat exchanger as recited in any one of claims 1 to 6.
8. The air conditioner as claimed in claim 7, further comprising a compressor, a four-way valve and an indoor heat exchange assembly, wherein the refrigerant conditioning heat exchanger is an outdoor heat exchanger,
the air conditioner further includes a control part configured to:
when the air conditioner operates to heat, the heating element is controlled to be started to heat the refrigerant in the liquid storage and distribution cavity, so that the refrigerant in the liquid storage and distribution cavity flows out through the first refrigerant pipe, and the refrigerant circulation quantity participating in the heating working condition is increased.
9. The air conditioner according to claim 8,
the control section is further configured to:
when the air conditioner operates in a heating working condition, the heating element is controlled to be started so as to heat the refrigerant in the liquid storage and distribution cavity, the temperature of the refrigerant flowing through the heat exchanger body is increased, and defrosting is performed on the heat exchanger body.
10. The air conditioner according to claim 8 or 9,
the indoor heat exchange assembly comprises a plurality of indoor heat exchangers arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220827669.8U CN217685963U (en) | 2022-04-11 | 2022-04-11 | Refrigerant adjusting heat exchanger and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220827669.8U CN217685963U (en) | 2022-04-11 | 2022-04-11 | Refrigerant adjusting heat exchanger and air conditioner |
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| Publication Number | Publication Date |
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| CN217685963U true CN217685963U (en) | 2022-10-28 |
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| CN202220827669.8U Active CN217685963U (en) | 2022-04-11 | 2022-04-11 | Refrigerant adjusting heat exchanger and air conditioner |
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| Country | Link |
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| CN (1) | CN217685963U (en) |
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