Refrigerant heat dissipation assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses a refrigerant heat dissipation assembly, an air conditioner outdoor unit and an air conditioner. The refrigerant heat dissipation assembly comprises a liquid inlet pipe, a heat transfer pipe and a liquid outlet pipe. The multiple heat transfer pipes are sequentially communicated end to end to form a main pipe set, and one end of the main pipe set is communicated with the liquid inlet pipe. The liquid outlet pipe is communicated with the other end of the main body pipe set and provided with a protruding part, the height of the protruding part is larger than that of the main body pipe set, refrigerants flow under the action of pressure, if bubbles appear in a system, the refrigerants can be pushed to the rear pipeline under the action of pressure, and when the bubbles reach the tail end of the main body pipe set, due to the fact that the protruding part is provided with an upwards-extending part, the liquid outlet pipe is not prone to falling off. The liquid needs to accumulate certain energy to resist gravity and move upwards, bubbles can reach the position above the liquid level, namely, the bubbles cannot be reserved in the main body pipe set, it is guaranteed that the time for the main body pipe set to be in the full liquid state is longer, and therefore the better heat dissipation effect is achieved, the structural design is ingenious, and machining and achieving are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning heat dissipation, in particular to a refrigerant heat dissipation component, an air conditioning outdoor unit and an air conditioner. Background Art

[0002] With the development of air-conditioning technology, the heat generated by the electronic control components used in the air conditioner has gradually increased, and it is necessary to dissipate the heat of the electronic control components inside the air conditioner. The electronic control components are loaded in an electrical box.

[0003] At present, heat is taken away from the electrical box by setting a heat transfer tube on the electrical box, but the existing heat transfer tube cannot be guaranteed to be full of liquid. The heat transfer tube that is not full of liquid cannot meet the heat dissipation of the electronic control components in the large-capacity air conditioner under high temperature conditions, and the heat dissipation efficiency is low. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a refrigerant heat dissipation component that can meet the heat dissipation of the electric control components in a large-capacity air conditioner under high temperature conditions and has high heat dissipation efficiency.

[0005] The utility model also provides an outdoor unit having the refrigerant heat dissipation component.

[0006] The utility model also provides an air conditioner with the outdoor unit.

[0007] According to a first aspect of the utility model, a refrigerant heat dissipation component includes: a liquid inlet pipe; two heat transfer pipes are provided, the heat transfer pipes are extended in the horizontal direction, the two heat transfer pipes are arranged vertically, the two heat transfer pipes are connected in sequence end to end, the two heat transfer pipes are connected to form a main pipe group, one end of the main pipe group is connected to the liquid inlet pipe, and the main pipe group is distributed in an S shape; a liquid outlet pipe is connected to the other end of the main pipe group, the starting end of the liquid outlet pipe is bent from front to back to form a protrusion, and the height of the protrusion is greater than that of the main pipe group; a first connecting pipe is connected to the inlet end of the liquid inlet pipe through a connecting piece; a second connecting pipe is connected to the outlet end of the liquid outlet pipe through a connecting piece.

[0008] A refrigerant heat dissipation component according to an embodiment of the utility model has at least the following beneficial effects: the heat transfer tube is extended in the horizontal direction, and in the height direction, the protrusion on the liquid outlet pipe is higher than the heat transfer tube. Even if tiny bubbles appear in the pipeline, the bubbles will move to the top of the protrusion under the action of pressure to ensure that the heat transfer tube is always in a full liquid state; the refrigerant flows under the action of pressure, and if bubbles appear in the system, they will be pushed to the rear pipeline under the action of pressure. When it reaches the end of the main tube group, since the protrusion has a part extending upward, the liquid needs to accumulate a certain amount of energy to move upward against gravity, and the bubbles will reach above the liquid surface, that is, the bubbles will not remain in the main tube group, ensuring that the main tube group is in a full liquid state for a longer time, thereby achieving a better heat dissipation effect, and the structural design is ingenious and easy to process and implement; the S-shaped distribution of the main tube group has a large space utilization rate and can absorb heat in a concentrated manner.

[0009] According to some embodiments of the utility model, the two heat transfer tubes are arranged parallel to each other, and the heat transfer tubes are arranged horizontally. The horizontally arranged heat transfer tubes lengthen the flow distance of the refrigerant therein, increase the heat exchange time, and increase the heat absorption.

[0010] According to some embodiments of the utility model, the two heat transfer tubes are connected by a U-shaped tube, and the bent portion of the U-shaped tube is bent downward. The U-shaped tube can also reduce the accumulation of bubbles in the heat transfer tube when the refrigerant flows in the reverse direction. The forward and reverse flows of the refrigerant can make the heat transfer tube full of liquid.

[0011] According to some embodiments of the present invention, the protrusion is configured to be U-shaped.

[0012] According to some embodiments of the utility model, the free end of the first connecting pipe is connected to a one-way valve and a first filter in sequence, the inlet and outlet ends of the one-way valve are connected to a first throttling device, the first filter is used to connect to the outlet of an external compressor, the free end of the second connecting pipe is connected to a second throttling device, a second filter and a stop valve in sequence, the stop valve is used to connect to the inlet of an external compressor, the first connecting pipe and the second connecting pipe are arranged to cooperate with each other, and the effects of forward primary throttling and reverse secondary throttling are achieved under the action of the first throttling device and the second throttling device.

[0013] According to some embodiments of the present invention, the first throttling member and / or the second throttling member is a capillary tube. Using the capillary tube as a throttling element has no moving parts, is not prone to malfunction and leakage, and has low maintenance costs.

[0014] According to the second aspect of the present invention, an air-conditioning outdoor unit includes the refrigerant heat dissipation assembly and a heat dissipation plate, wherein the heat dissipation plate is provided with a mounting groove for mounting the heat transfer tube, and the heat dissipation plate is used to be mounted on an electrical box to absorb heat from the electrical box.

[0015] An air-conditioning outdoor unit according to an embodiment of the utility model has at least the following beneficial effects: the outdoor unit can efficiently dissipate heat for the electrical components therein when provided with the refrigerant heat dissipation assembly, thereby increasing the service life of the outdoor unit; the heat dissipation plate can better conduct heat, which can facilitate the installation of the heat transfer pipe and improve the heat dissipation efficiency.

[0016] An air conditioner according to a third aspect of the present utility model includes the outdoor unit.

[0017] An air conditioner according to an embodiment of the utility model has at least the following beneficial effects: since the heat dissipation efficiency of the electrical components of the outdoor unit of the air conditioner is improved, the service life of the entire air conditioner is relatively improved.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of the refrigerant heat dissipation component and the heat dissipation plate in cooperation with each other in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram showing the structure of the refrigerant heat dissipation component being separated from the heat dissipation plate;

[0022] Figure 3 for Figure 1 A schematic diagram showing the installation of a refrigerant heat dissipation assembly in an outdoor unit is shown.

[0023] Liquid inlet pipe 100;

[0024] Heat transfer tube 200, main tube group 200a;

[0025] Liquid outlet pipe 300, protrusion 310;

[0026] U-tube 400;

[0027] A first connecting pipe 500, a one-way valve 510, a first filter 520, and a first throttling member 530;

[0028] A second connecting pipe 600, a second throttling member 610, a second filter 620, and a stop valve 630;

[0029] Heat dissipation plate 700 , mounting groove 710 , and connector 800 . DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "more" is two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 3A refrigerant heat dissipation component comprises: a liquid inlet pipe 100; two heat transfer pipes 200 are provided, the heat transfer pipes 200 are extended in the horizontal direction, the two heat transfer pipes 200 are arranged in the vertical direction, the two heat transfer pipes 200 are connected in sequence, the two heat transfer pipes 200 are connected to form a main pipe group 200a, one end of the main pipe group 200a is connected to the liquid inlet pipe 100, and the main pipe group 200a is distributed in an S shape; a liquid outlet pipe 300 is connected to the other end of the main pipe group 200a, the starting end of the liquid outlet pipe 300 is bent from front to back to form a protrusion 310, and the height of the protrusion 310 is greater than the main pipe group 200a; a first connecting pipe 500 is connected to the inlet end of the liquid inlet pipe 100 through a connecting piece 800; a second connecting pipe 600 is connected to the outlet end of the liquid outlet pipe 300 through the connecting piece 800; The heat pipe 200 is extended in the horizontal direction. In the height direction, the protrusion 310 on the liquid outlet pipe 300 is higher than the heat transfer pipe 200. Even if tiny bubbles appear in the pipeline, the bubbles will move to the top of the protrusion 310 under the action of pressure to ensure that the heat transfer pipe 200 is always in a full liquid state. The refrigerant flows under the action of pressure. If bubbles appear in the system, they will be pushed to the rear pipeline under the action of pressure. When it reaches the end of the main tube group 200a, since the protrusion 310 has a part extending upward, the liquid needs to accumulate a certain amount of energy to move upward against gravity, and the bubbles will reach above the liquid surface, that is, the bubbles will not remain in the main tube group 200a, ensuring that the main tube group 200a is in a full liquid state for a longer time, thereby achieving a better heat dissipation effect. The structural design is ingenious and easy to process and implement. It can be understood that the first connecting pipe 500 and the second connecting pipe 600 are used as an external compressor, and the connecting piece 800 includes a quick connector or a nut connector. The first connecting pipe 500 is threadedly connected to the inlet end of the liquid inlet pipe 100 through the nut connector, and the second connecting pipe 600 is threadedly connected to the outlet end of the liquid outlet pipe 300 through the nut connector. A sealing gasket and a sealing ring are arranged in the nut connector, and the sealing gasket and the sealing ring are used to seal the connection between the two pipes to prevent leakage.

[0035] It should be noted that when the electronic control components control the operation of the air conditioner, the electronic control components begin to heat up and the surface temperature of the electronic control components rises. In large-capacity variable-frequency air conditioners, the heat generated by the electronic control components increases significantly with the increase in workload, especially in high-temperature environments. The heat dissipation of the electronic control components through the temperature difference with the environment is far from enough to maintain the high-efficiency operation of the electronic control components in a high-temperature environment. It may even be possible that the electronic control components are damaged due to continuous overload operation in a harsh high-temperature environment, causing the air conditioner to malfunction. The refrigerant heat dissipation pipe filled with low-temperature liquid refrigerant provides a sufficient and effective heat dissipation environment for the electronic control components to dissipate heat, provides a better working environment for the electronic control components, and ensures that the air conditioner can work more efficiently in a high-temperature environment. The protrusion 310 is arranged to prevent the heat transfer pipe 200 from being full of liquid, thereby improving the cooling capacity and high-temperature adaptability of large-capacity air conditioners under high temperature conditions, and improving user comfort. The liquid inlet pipe 100, the heat transfer pipe 200 and the liquid outlet pipe 300 are spliced ​​together by multiple pipes, and can also be an integral molding setting. The so-called head-to-tail sequential connection means that the liquid inlet pipe 100, the heat transfer pipe 200 and the liquid outlet pipe 300 are connected in this order.

[0036] In some embodiments, the main tube group 200a is distributed in an S-shape. The S-shaped main tube group 200a has a large space utilization rate and can absorb heat in a concentrated manner.

[0037] In some embodiments, two heat transfer tubes 200 are provided, the heat transfer tubes 200 are extended in the horizontal direction, the two heat transfer tubes 200 are arranged vertically, the two heat transfer tubes 200 are connected end to end in sequence, the relatively lower heat transfer tube 200 is connected to the liquid inlet pipe 100, and the relatively upper heat transfer tube 200 is connected to the liquid outlet pipe 300.

[0038] In some embodiments, two heat transfer tubes 200 are arranged parallel to each other, and the heat transfer tubes 200 are arranged horizontally. The horizontally arranged heat transfer tubes 200 lengthen the flow distance of the refrigerant therein, increase the heat exchange time, and increase the heat absorption.

[0039] In some embodiments, two heat transfer tubes 200 are connected through a U-shaped tube 400, and the curved portion of the U-shaped tube 400 is bent downward. The U-shaped tube 400 can also reduce the accumulation of bubbles in the heat transfer tube 200 when the refrigerant flows in the reverse direction. The forward and reverse flows of the refrigerant can make the heat transfer tube 200 full of liquid.

[0040] In some embodiments, the protrusion 310 is configured in a U-shape.

[0041] In some embodiments, it also includes a first connecting pipe 500 and a second connecting pipe 600. The first connecting pipe 500 is connected to the liquid inlet pipe 100, and the second connecting pipe 600 is connected to the liquid outlet pipe 300. The free end of the first connecting pipe 500 is connected to a one-way valve 510 and a first filter 520 in sequence. The inlet and outlet ends of the one-way valve 510 are connected to a first throttling piece 530. The first filter 520 is used to connect to the outlet of an external compressor. The free end of the second connecting pipe 600 is connected to a second throttling piece 610, a second filter 620 and a stop valve 630 in sequence. The stop valve 630 is used to connect to the inlet of an external compressor. The first connecting pipe 500 and the second connecting pipe 600 cooperate to achieve the effects of forward primary throttling and reverse secondary throttling under the action of the first throttling piece 530 and the second throttling piece 610.

[0042] In some embodiments, the first throttle member 530 and / or the second throttle member 610 is a capillary tube. Using the capillary tube as a throttling element has no moving parts, is not prone to failure and leakage, and has low maintenance costs.

[0043] It can be understood that when the refrigerant liquid flows from the first connecting pipe 500 to the second connecting pipe 600, the one-way valve 510 can be unidirectional, and the first throttling piece 530 is basically not used at this time, so throttling is performed at the position of the second throttling piece 610, that is, the entire flow path is throttled only at the position of the second throttling piece 610, that is, primary throttling; if the refrigerant flows from the second connecting pipe 600 to the first connecting pipe 500, it will first pass through the second throttling piece 610 for throttling, and because the one-way valve 510 cannot be conducted, it will pass through the first throttling piece 530 for throttling, which becomes secondary throttling. The so-called primary throttling and secondary throttling mean how many times the throttling has been performed. This scheme adopts a system combining primary throttling with secondary throttling. The system can be a combination of primary throttling for refrigeration and secondary throttling for heating, or a combination of secondary throttling for refrigeration and primary throttling for heating. The first-level throttling means that the cold refrigerant liquid flows from the first connecting pipe 500 to the second connecting pipe 600. At this time, the air conditioner is in the cooling state. Conversely, in the heating state, the refrigerant flows from the second connecting pipe 600 to the first connecting pipe 500. The heat exchange of the electrical box is achieved through the second-level throttling cooling. The second-level throttling of cooling is similar to the first-level throttling of heating. When the second-level throttling of heating is adopted, the system adjusts the flow and pressure of the condensed high-temperature liquid refrigerant through the second-level throttling capillary. The first-level throttling can reduce the temperature of the refrigerant, so that the refrigerant flowing through the heat transfer tube 200 can prevent condensation on the surface of the electronic control components in a low-temperature environment. After the refrigerant dissipates heat, the refrigerant undergoes the second-level throttling through the capillary, which can further reduce the evaporation pressure and evaporation temperature of the refrigerant, thereby better absorbing heat from the low-temperature environment and achieving the purpose of heating the high-temperature indoor environment. When two-stage refrigeration throttling is used, the first stage throttling can fully reduce the temperature of the refrigerant flowing through the heat transfer tube 200 in a high temperature environment, providing a better heat dissipation environment for the heat dissipation of the electronic control components. The second stage throttling further reduces the refrigerant temperature to meet the effect of heat exchange and heat absorption to reduce the indoor temperature.

[0044] The liquid supply capacity of the capillary tube mainly depends on its structural parameters (inner diameter and length) and the state parameters of the refrigerant inlet (pressure and temperature), and has basically nothing to do with the outlet state. When the inner diameter, length and refrigerant inlet pressure of the capillary tube are determined, if the subcooling of the refrigerant increases, the appearance of the gas-liquid two-phase state when flowing in the tube will be delayed, and the amount of refrigerant passing through will increase.

[0045] In actual use, the evaporation pressure of the refrigerant is usually lower than the critical pressure at the outlet of the capillary tube. Therefore, when the load of the evaporator changes, the refrigerant flow through the capillary tube remains basically unchanged, and the evaporation pressure also does not change, but the superheat of the refrigerant flowing out of the evaporator will change greatly.

[0046] In some embodiments, the length of the capillary is calculated as follows:

[0047]

[0048] △P—pressure difference (condensation-evaporation), Pa;

[0049] R e —Reynolds number;

[0050] L—capillary length, m;

[0051] v—refrigerant flow rate, m / s;

[0052] ρ—refrigerant density, kg / m 3 ;

[0053] d—capillary inner diameter, mm;

[0054] Refrigeration parameters: pressure difference △P = 2999.88-1031.66 = 1968.22 kPa; refrigerant flow rate v = 15.1047 m / s; refrigerant density ρ = 928.117 kg / m 3 ; Capillary inner diameter d = 2.1 mm; Reynolds number Re = 283.4801;

[0055] Capillary length: =0.5063m;

[0056] Heating parameters: pressure difference △P = 2632.17-778.61 = 1853.56 kPa; refrigerant flow rate v = 17.4170 m / s; refrigerant density ρ = 945.3050 kg / m 3 ; Capillary inner diameter d = 2.1 mm; Reynolds number Re = 317.9128;

[0057] Capillary length: =0.3623m;

[0058] The heat dissipation effect of the electronic control components in high temperature environment is obvious and reliable; the high temperature cooling capacity can be increased and the air conditioning comfort is improved.

[0059] An air conditioner outdoor unit includes a refrigerant heat dissipation assembly and a heat dissipation plate 700. The heat dissipation plate 700 is provided with a mounting groove 710. The mounting groove 710 is used to install a heat transfer pipe 200. The heat dissipation plate 700 is used to be installed on an electrical box to absorb heat from the electrical box. When the outdoor unit has the refrigerant heat dissipation assembly, the electrical components inside can be efficiently dissipated, thereby increasing the service life of the outdoor unit. The heat dissipation plate 700 can conduct heat better, which can facilitate the installation of the heat transfer pipe 200 and improve the heat dissipation efficiency. It should be noted that the heat dissipation plate 700 includes a plate made of a metal with strong thermal conductivity, such as an aluminum plate or a copper plate.

[0060] An air conditioner includes an outdoor unit. The air conditioner with the outdoor unit has a relatively longer service life because the heat dissipation efficiency of the electrical components of the outdoor unit is improved.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A refrigerant heat dissipation component, characterized in that: include: Liquid inlet pipe (100); Two heat transfer tubes (200) are provided, the heat transfer tubes (200) are extended in the horizontal direction, the two heat transfer tubes (200) are arranged in the vertical direction, the two heat transfer tubes (200) are connected end to end in sequence, the two heat transfer tubes (200) are connected to form a main tube group (200a), one end of the main tube group (200a) is connected to the liquid inlet pipe (100), and the main tube group (200a) is distributed in an S shape; a liquid outlet pipe (300) connected to the other end of the main pipe assembly (200a); the starting end of the liquid outlet pipe (300) is bent from front to back to form a protrusion (310); the height of the protrusion (310) is greater than that of the main pipe assembly (200a); A first connecting pipe (500) connected to the inlet end of the liquid inlet pipe (100) via a connecting piece (800); The second connecting pipe (600) is connected to the outlet end of the liquid outlet pipe (300) through a connecting piece (800).

2. A refrigerant heat dissipation component according to claim 1, characterized in that: The two heat transfer tubes (200) are arranged parallel to each other, and the heat transfer tubes (200) are arranged horizontally.

3. A refrigerant heat dissipation component according to claim 2, characterized in that: The two heat transfer tubes (200) are connected via a U-shaped tube (400), and the bent portion of the U-shaped tube (400) is bent downward.

4. A refrigerant heat dissipation component according to claim 3, characterized in that: The protrusion (310) is configured to be U-shaped.

5. A refrigerant heat dissipation assembly according to any one of claims 1 to 4, characterized in that: The free end of the first connecting pipe (500) is connected to a one-way valve (510) and a first filter (520) in sequence, and the inlet and outlet ends of the one-way valve (510) are connected to a first throttling device (530). The first filter (520) is used to connect to the outlet of an external compressor. The free end of the second connecting pipe (600) is connected to a second throttling device (610), a second filter (620) and a stop valve (630) in sequence, and the stop valve (630) is used to connect to the inlet of an external compressor.

6. A refrigerant heat dissipation component according to claim 5, characterized in that: The first throttling member (530) and / or the second throttling member (610) is a capillary tube.

7. An air conditioner outdoor unit, characterized in that: The refrigerant heat dissipation component comprises the refrigerant heat dissipation component according to any one of claims 1 to 6, and further comprises a heat dissipation plate (700), wherein the heat dissipation plate (700) is provided with a mounting groove (710), wherein the mounting groove (710) is used for mounting the heat transfer tube (200), and the heat dissipation plate (700) is used for mounting on an electrical box to absorb heat from the electrical box.

8. An air conditioner, characterized in that: Includes the outdoor unit as described in claim 7.

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