Air conditioning system

Abstract

The utility model discloses an air conditioning system which comprises an outdoor unit. The outdoor heat exchanger is fixedly arranged in the machine shell; the supporting mechanism is fixed in the machine shell and located on one side of the outdoor heat exchanger. The head shaking mechanism is fixed with the supporting mechanism; and the outdoor fan is connected with the oscillating mechanism, and the oscillating mechanism is used for driving the outdoor fan to oscillate and rotate. According to the air conditioning system, the oscillating mechanism is arranged in the outdoor unit, the outdoor fan is connected with the oscillating mechanism, and the oscillating mechanism can drive the outdoor fan to oscillate and rotate, so that the problems that the outdoor fan of an existing air conditioner can only supply air towards a fixed direction, so that airflow flowing through the outdoor heat exchanger is not uniformly distributed; according to the scheme, the air supply direction of the outdoor fan is variable, the air field distribution of the outdoor heat exchanger is optimized, the edge area of the outdoor heat exchanger is fully utilized, and the air fields of all the areas of the outdoor heat exchanger are optimized.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioners. Background Art

[0002] At present, most of the side-blowing air conditioner outdoor units usually use axial flow fans. During normal cooling and heating operation, they can only draw air from a fixed direction (perpendicular to the direction in which the heat exchanger is placed). Therefore, the wind speed in the middle area of ​​the heat exchanger is greater than that in the edge area, which makes the heat exchange efficiency in the edge area lower, resulting in the heat exchange efficiency at the edge of the heat exchanger cannot be fully utilized.

[0003] In addition, when the air conditioner switches from heating mode to defrost mode, the entire heat exchanger of the air conditioner outdoor unit is in a defrost state. This is manifested as no warm air blowing out from the indoor unit at regular intervals during the heating season, and slight fluctuations in the indoor ambient temperature, resulting in users experiencing poor air conditioning performance during the heating season.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The utility model aims at solving the technical problems that the outdoor heat exchanger of the air conditioner in the prior art adopts an axial flow fan in a fixed direction, resulting in uneven air flow distribution through the outdoor heat exchanger and low heat exchange efficiency, and proposes an air conditioning system that can solve the above problems.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0007] An air conditioning system includes an outdoor unit, wherein the outdoor unit includes:

[0008] chassis;

[0009] an outdoor heat exchanger, which is fixedly disposed in the casing;

[0010] A supporting mechanism, which is fixed in the casing and located on one side of the outdoor heat exchanger;

[0011] A shaking head mechanism, which is fixed to the supporting mechanism;

[0012] An outdoor fan is connected to the shaking mechanism, and the shaking mechanism is used to drive the outdoor fan to shake and rotate.

[0013] In some embodiments, the shaking mechanism includes:

[0014] A fixing seat, which is fixed to the supporting mechanism, wherein a cavity is formed in the fixing seat, and an axial hole is formed on a side surface of the fixing seat facing away from the supporting mechanism, wherein the axial hole is connected to the cavity;

[0015] An oscillating motor is fixed in the cavity, and a power output shaft of the oscillating motor is coaxially arranged with the shaft hole;

[0016] The connecting part has a first connecting shaft at one end and a connecting hole at the other end. The first connecting shaft is connected to the power output shaft of the oscillating motor. A second connecting shaft is formed on the outdoor fan, and the second connecting shaft is fixed to the connecting hole.

[0017] In some embodiments, the support mechanism includes:

[0018] A support body is arranged vertically and is fixed to the outdoor heat exchanger. An assembly hole matching the fixing seat is formed on the support body. A side of the assembly hole facing away from the outdoor heat exchanger protrudes to form a limiting portion. The fixing seat extends into the assembly hole and is fixed to the limiting portion.

[0019] In some embodiments, the support mechanism further includes:

[0020] An upper connecting portion, which is connected to the top end of the supporting body and extends in a horizontal direction, and the upper connecting portion is fixed to the top plate of the housing;

[0021] The lower connecting part is connected to the bottom end of the supporting body and extends in the horizontal direction, and the lower connecting part is fixed to the bottom plate of the casing.

[0022] In some embodiments, the first connecting shaft and the second connecting shaft are arranged non-parallel, and the second connecting shaft extends obliquely from the connecting portion toward the axial direction of the first connecting shaft.

[0023] In some embodiments, the shaking mechanism further includes:

[0024] There are two connecting arms, which are symmetrically fixedly connected to the two sides of the fixing seat;

[0025] The limiting frame has two groups of frame edges arranged opposite to each other, wherein the first group of frame edges is rotationally connected to the two connecting arms in a one-to-one correspondence, and the second group of frame edges is rotationally connected to the outdoor fans respectively.

[0026] In some embodiments, the second group of frames are respectively provided with second shaft holes, and the two second shaft holes are coaxially arranged, and the outdoor fan comprises:

[0027] A fan, wherein the fan is provided with a second rotating shaft corresponding to the second rotating shaft hole one by one, the fan is inserted into the limit frame, and the second rotating shaft is inserted into the second rotating shaft hole corresponding thereto;

[0028] A fan blade connected to a power output shaft of the fan, and the fan drives the fan blade to rotate;

[0029] First rotating shafts are fixed to the outer sides of the first group of frame edges respectively, and the two first rotating shafts are coaxially arranged. The connecting arm is provided with second rotating shaft holes corresponding to the first rotating shafts, and the first rotating shaft is inserted into the corresponding first rotating shaft holes.

[0030] In some embodiments, there are two outdoor heat exchangers, and the two outdoor heat exchangers share one outdoor fan, or each outdoor heat exchanger corresponds to one outdoor fan.

[0031] In some embodiments, the two outdoor heat exchangers are respectively a first outdoor heat exchanger and a second outdoor heat exchanger, and the air conditioning system further includes:

[0032] A four-way valve, wherein one path of a C tube of the four-way valve is connected to a first end of a first outdoor heat exchanger through a first solenoid valve, and the other path is connected to a first end of a second outdoor heat exchanger through a second solenoid valve;

[0033] A compressor, one of the exhaust ports of the compressor is connected to the D pipe of the four-way valve, another is connected to the first end of the first outdoor heat exchanger through the third solenoid valve, and the third is connected to the first end of the second outdoor heat exchanger through the fourth solenoid valve.

[0034] In some embodiments, the second end of the first outdoor heat exchanger is connected to the first electronic expansion valve, and the second end of the second outdoor heat exchanger is connected to the first branch and the second branch respectively after being connected to the second electronic expansion valve, a fifth solenoid valve is provided in the first branch, and a sixth solenoid valve is provided in the second branch.

[0035] Compared with the prior art, the advantages and positive effects of the utility model are:

[0036] The air conditioning system of the utility model is provided with an shaking head mechanism in the outdoor unit and the outdoor fan is connected to the shaking head mechanism. The shaking head mechanism can drive the outdoor fan to shake its head and rotate, thereby solving the technical problems that the outdoor fan of the existing air conditioner can only supply air in a fixed direction, resulting in uneven air flow distribution through the outdoor heat exchanger and low heat exchange efficiency. The air supply direction of the outdoor fan of this scheme is variable, thereby optimizing the wind field distribution of the outdoor heat exchanger, making full use of the edge area of ​​the outdoor heat exchanger, and optimizing the wind field of all areas of the outdoor heat exchanger.

[0037] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the local structure of an outdoor unit in an embodiment of the air-conditioning system proposed by the utility model;

[0040] Figure 2 yes Figure 1 The main view;

[0041] Figure 3 It is a schematic diagram of the assembly relationship between the support mechanism and the outdoor fan in one embodiment of the air conditioning system proposed by the utility model;

[0042] Figure 4 yes Figure 3 Rear view of

[0043] Figure 5 yes Figure 3 Side view of

[0044] Figure 6 This is a schematic diagram of a state of a shaking mechanism in an embodiment of the air conditioning system proposed by the utility model;

[0045] Figure 7 This is another state schematic diagram of the shaking mechanism in one embodiment of the air conditioning system proposed by the utility model;

[0046] Figure 8 This is a schematic diagram of another state of the shaking mechanism in one embodiment of the air conditioning system proposed by the utility model;

[0047] Fig. 9 This is a schematic diagram of another state of the shaking mechanism in one embodiment of the air conditioning system proposed by the utility model;

[0048] Fig.10 It is a schematic diagram of the assembly of a shaking head mechanism in one embodiment of the air conditioning system proposed by the utility model;

[0049] Fig.11 It is a schematic diagram of refrigerant circulation in a cooling state in an embodiment of the air conditioning system proposed by the utility model;

[0050] Fig.12 It is a schematic diagram of refrigerant circulation in a heating but not defrosting state in an embodiment of the air-conditioning system proposed by the utility model. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are merely for the convenience of description, and do not indicate or imply that the device or element 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. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] <Basic operating principle of air conditioner>

[0055] In the present application, the air conditioning system performs the refrigerant cycle of the system by using a compressor, a condenser, an electronic expansion valve and an evaporator. The refrigerant cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.

[0056] The compressor compresses the refrigerant gas at low temperature and low pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0057] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0058] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0059] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0060] According to some embodiments of the present application, the air conditioning system includes an indoor unit installed in an indoor space, and the indoor unit is connected to an outdoor unit installed in an outdoor space through a pipe.

[0061] The outdoor unit may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expansion device and similar components of a refrigeration cycle, and the indoor unit may also be provided with an indoor heat exchanger and an indoor fan.

[0062] In some embodiments, the outdoor unit of the air conditioning system includes a casing, and a receiving space is defined inside the casing.

[0063] like Figure 1 As shown, the outdoor unit further includes an outdoor heat exchanger 12, and the outdoor heat exchanger 12 is fixedly disposed in the casing.

[0064] The outdoor unit also includes a supporting mechanism 13, which is fixed in the casing and located on one side of the outdoor heat exchanger 12. The supporting mechanism 13 can be fixed to the casing, to the outdoor heat exchanger 12, or to the casing and the outdoor heat exchanger 12 respectively.

[0065] The outdoor unit further comprises an oscillating mechanism 14, which is fixed to the supporting mechanism 13. The oscillating mechanism 14 has a power device, which can drive the device connected thereto to rotate through a power output mechanism.

[0066] The outdoor unit also includes an outdoor fan 15, which is connected to an oscillating mechanism 14, and the oscillating mechanism 14 is used to drive the outdoor fan 15 to oscillate. The outdoor fan 15 itself has a power device that can drive the fan blades to rotate according to the set gear. The oscillating mechanism 14 in this embodiment can drive the entire outdoor fan 15 to oscillate according to a certain motion trajectory.

[0067] The rotation of the blades of the outdoor fan 15 can drive the air flow to flow in a directional manner, and the shaking mechanism 14 changes the blowing direction of the outdoor fan 15 by driving the outdoor fan 15 to shake its head and rotate, thereby solving the technical problem that the outdoor fan of the existing air conditioner can only supply air in a fixed direction, resulting in uneven air flow distribution through the outdoor heat exchanger and low heat exchange efficiency. In this scheme, the air supply direction of the outdoor fan is variable, the wind field distribution of the heat exchanger is optimized, and the edge area of ​​the heat exchanger is fully utilized to optimize the wind field of all areas of the heat exchanger.

[0068] In some embodiments, such as Figure 3-Figure 9 As shown, the oscillating mechanism 14 includes a fixing seat 141, and the fixing seat 141 is fixed to the supporting mechanism 13, so that the oscillating mechanism 14 is fixed to the supporting mechanism 13. A cavity is provided in the fixing seat 141, and an axial hole (not shown in the figure due to angle reasons) is provided on a side surface of the fixing seat 141 facing away from the supporting mechanism 13, and the axial hole is connected to the cavity of the fixing seat 141.

[0069] like Fig.10 As shown, the oscillating mechanism 14 also includes an oscillating motor 142, which is fixed in the cavity of the fixing seat 141, and the power output shaft of the oscillating motor 142 is coaxially arranged with the shaft hole. The power output shaft of the oscillating motor 142 can pass through the shaft hole to the outside of the fixing seat 141, or the connecting shaft of the external structure to be driven can be inserted into the cavity through the shaft hole to connect with the power output shaft of the oscillating motor 142.

[0070] The oscillating mechanism 14 also includes a connecting part 143, one end of the connecting part 143 has a first connecting shaft 1431, and the other end has a connecting hole 1432, the first connecting shaft 1431 is connected to the power output shaft of the oscillating motor 142, and a second connecting shaft 151 is fixedly arranged on the outdoor fan 15, and the second connecting shaft 151 is fixed to the connecting hole of the connecting part 143.

[0071] The power output shaft of the oscillating motor 142 can rotate around the axis, thereby driving the connecting part 143 to rotate together. Since the second connecting shaft 151 is fixed to the connecting part 143, the outdoor fan 15 can be driven to rotate around the axis synchronously.

[0072] The first connecting shaft of the connecting portion 143 is coaxial with the connecting hole or the axes are parallel to each other, so that the outdoor fan 15 can rotate in the rotation plane of the oscillating motor 142. When the outdoor fan 15 rotates to different positions, its air outlet directions are parallel or nearly parallel.

[0073] In some embodiments, the first connecting shaft 1431 of the connecting portion 143 is not coaxially arranged with the connecting hole 1432, and the two are not parallelly arranged, that is, the axis of the first connecting shaft and the axis of the connecting hole form a certain angle, so that the trajectory swept by the outdoor fan 15 is in the shape of a conical surface. When the outdoor fan 15 rotates to different positions, its air outlet direction is no longer parallel, which is conducive to increasing the cross-sectional area of ​​the air inlet and outlet, further optimizing the wind field distribution of the outdoor heat exchanger, making full use of the edge area of ​​the outdoor heat exchanger, and optimizing the wind field of all areas of the outdoor heat exchanger.

[0074] In some embodiments, the support mechanism 13 includes a support body 131, which is arranged vertically and fixed to the outdoor heat exchanger 12. An assembly hole 132 matching the fixing seat 141 is formed on the support body 131. A side of the assembly hole 132 that is away from the outdoor heat exchanger 12 protrudes to form a limiting portion 133. The fixing seat 141 extends into the assembly hole 132 and is fixed to the limiting portion 133.

[0075] The power output shaft of the oscillating motor 142 is arranged in the horizontal direction. When the power output shaft of the oscillating motor 142 rotates, it drives the outdoor fan 15 to rotate with the power output shaft of the oscillating motor 142 as the central axis, and the trajectory swept by the outdoor fan 15 is in the shape of a cone.

[0076] Since the oscillating motor 142 drives the outdoor fan 15 to rotate, the outdoor fan 15 also needs to rotate itself. In order to improve the stability of supporting the oscillating mechanism 14 and the outdoor fan 15, in some embodiments, the supporting mechanism 13 also includes an upper connecting part 134, which is connected to the top of the supporting body 131 and extends in the horizontal direction. The upper connecting part 134 is fixed to the top plate of the casing.

[0077] In some embodiments, such as Figure 3 As shown, the upper connecting portion 134 is tightly fitted to the lower surface of the top plate of the casing. By fixing the upper connecting portion 134 to the top plate of the casing, the top plate of the casing can provide an upward pulling force for the supporting mechanism 13, and can jointly provide a supporting force for the supporting body 131 with the outdoor heat exchanger 12, thereby improving the stability of the fixing of the supporting body 131.

[0078] In some embodiments, the support mechanism 13 further includes a lower connection portion 135 , which is connected to the bottom end of the support body 131 and extends in a horizontal direction. The lower connection portion 135 is fixed to the bottom plate of the housing.

[0079] In some embodiments, the lower connecting portion 135 is tightly fitted to the upper surface of the bottom plate of the casing. By fixing the lower connecting portion 135 to the bottom plate of the casing, the bottom plate of the casing can provide an upward supporting force for the supporting mechanism 13, and can jointly provide a supporting force for the supporting body 131 with the outdoor heat exchanger 12, thereby improving the stability of the fixing of the supporting body 131.

[0080] In some embodiments, the support mechanism 13 includes both an upper connection portion 134 and a lower connection portion 135 , which is optimal for improving the stability of the support body 131 .

[0081] In some embodiments, the supporting body 131 includes two vertical beams 1311 , which are respectively fixed to the outdoor heat exchanger 12 , and the limiting portion 133 is formed between the two vertical beams 1311 and is respectively connected and fixed to the two vertical beams 1311 .

[0082] The two vertical beams 1311 are connected by a horizontal beam 1312 . There are two horizontal beams 1312 , which are respectively located at the top and bottom of the vertical beam 1311 . A clamping portion 1313 is also provided on the horizontal beam 1312 for clamping with the outdoor heat exchanger 12 .

[0083] In some embodiments, the upper connecting portion 134 is provided with an assembly hole 1341 , through which a screw may be passed to fix the upper connecting portion 134 to a screw hole on the top plate of the housing.

[0084] In some embodiments, the assembly hole 1341 extends in the extension direction of the upper connecting portion 134 and is a long strip-shaped hole, so that the assembly hole 1341 is easily matched and aligned with the screw hole of the top plate of the housing.

[0085] like Fig.10 As shown, in some embodiments, since the second connecting shaft 151 is coaxially arranged with the connecting hole 1432, the first connecting shaft 1431 of the connecting portion 143 is not arranged in parallel with the second connecting shaft 151, and the second connecting shaft 151 extends obliquely from the connecting portion 143 toward the axial direction of the first connecting shaft. In this way, the track swept by the outdoor fan 15 driven by the oscillating motor 142 is in the shape of a conical surface.

[0086] In some embodiments, the shaking mechanism 14 further includes two connecting arms 144 , and the two connecting arms 144 are symmetrically fixedly connected to two sides of the fixing base 141 .

[0087] like Figure 6-Figure 10 As shown, the shaking mechanism 14 also includes a limit frame 145, which has two groups of oppositely arranged frame edges, and the frame edges are connected end to end to form a closed structure, wherein the first group of frame edges 1451 are rotationally connected to the two connecting arms 144 one by one, and the second group of frame edges 1452 are rotationally connected to the outdoor fans 15 respectively.

[0088] When the oscillating motor 142 rotates, the outdoor fan 15 is driven to rotate around the first connecting axis through the connecting part 143. At the same time, the limit frame 145 and the connecting arm 144 provide a certain supporting force for the outdoor fan 15 without interfering with the twisting of the outdoor fan 15, thereby further providing the support stability of the outdoor fan 15.

[0089] In some embodiments, second rotating shaft holes are respectively opened on the second group of frame edges 1452, and the two second rotating shaft holes are coaxially arranged. The outdoor fan 15 includes a fan 152, and the fan 152 is provided with a second rotating shaft 153 corresponding to the second rotating shaft holes one by one. The fan 152 is inserted into the limit frame 145, and the second rotating shaft 153 is inserted into the second rotating shaft hole corresponding thereto, so that the second group of frame edges 1452 are respectively rotatably connected with the outdoor fan 15.

[0090] like Figure 2 As shown, in some embodiments, the outdoor fan 15 also includes fan blades 154, which are connected to the power output shaft of the fan 152. The fan 152 is used to drive the fan blades 154 to rotate, thereby driving the airflow to move. The airflow passes through the outdoor heat exchanger 12 to achieve heat exchange between the refrigerant inside it and the external air.

[0091] In some embodiments, first rotating shafts 1453 are respectively fixed on the outer surfaces of the first group of frame edges 1451, and the two first rotating shafts 1453 are coaxially arranged. A second rotating shaft hole 1441 corresponding to the first rotating shaft 1453 is opened on the connecting arm 144, and the first rotating shaft 1453 is inserted into the first rotating shaft hole 1441 corresponding to it, thereby realizing the rotational connection between the limit frame 145 and the connecting arm 144.

[0092] In some embodiments, the axis of the first rotating shaft 1453 and the axis of the second rotating shaft 153 are perpendicular to each other.

[0093] In some embodiments, there are two outdoor heat exchangers 12 , and the two outdoor heat exchangers can share one outdoor fan 15 .

[0094] When two outdoor heat exchangers share one outdoor fan 15, in some embodiments, the outdoor fan 15 is disposed between the two outdoor heat exchangers so that the wind field distribution of each outdoor heat exchanger is as uniform as possible.

[0095] In order to further improve the uniformity of wind field distribution and thus improve the heat exchange efficiency of each outdoor heat exchanger, in some embodiments, each outdoor heat exchanger corresponds to an outdoor fan 15 .

[0096] When each outdoor heat exchanger corresponds to an outdoor fan 15 , each outdoor fan 15 is arranged adjacent to the outdoor heat exchanger corresponding to it.

[0097] In some embodiments, the two outdoor heat exchangers are respectively a first outdoor heat exchanger 121 and a second outdoor heat exchanger 122, and the air conditioning system further comprises a four-way valve 16, and the four-way valve 16 has four interfaces, namely, a C pipe, an E pipe, an S pipe, and a D pipe. Among them, the S pipe of the four-way valve 16 is connected to the air inlet of the compressor 17, and the E pipe of the four-way valve 16 is connected to the indoor heat exchanger.

[0098] The C tube of the four-way valve is connected to two paths, one of which is connected to the first end of the first outdoor heat exchanger 121 through the first solenoid valve SV1, and the other is connected to the first end of the second outdoor heat exchanger 122 through the second solenoid valve SV2.

[0099] One of the exhaust ports of the compressor 17 is connected to the D pipe of the four-way valve, another is connected to the first end of the first outdoor heat exchanger 121 through the third solenoid valve SV3, and another is connected to the first end of the second outdoor heat exchanger 122 through the fourth solenoid valve SV4.

[0100] In some embodiments, the second end of the first outdoor heat exchanger 121 is connected to the first electronic expansion valve 18, and the second end of the second outdoor heat exchanger 122 is connected to the second electronic expansion valve 19 and then respectively connected to the first branch and the second branch, a fifth solenoid valve SV5 is provided in the first branch, and a sixth solenoid valve SV6 is provided in the second branch.

[0101] In some embodiments, in order to prevent the refrigerant from flowing back, a one-way valve CV2 is further connected to the rear end of the sixth solenoid valve SV6 in the second branch.

[0102] When operating under refrigeration conditions, the first solenoid valve SV1, the second solenoid valve SV2, and the sixth solenoid valve SV6 are opened, and the third solenoid valve SV3, the fourth solenoid valve SV4, and the fifth solenoid valve SV5 are closed. After the refrigerant participating in the cycle is compressed by the compressor 17 and enters the four-way valve, the refrigerant enters the outdoor heat exchanger from the first solenoid valve SV1 and the second SV2 for heat exchange. At the same time, the outdoor fan shakes the fan through the crank-connecting rod structure, which increases the wind speed in the edge area of ​​the heat exchanger and optimizes the wind field distribution at the edge of the outdoor heat exchanger. Then, after passing through the first electronic expansion valve 18 and the second electronic expansion valve 19, the solenoid valve SV6 and the one-way valve CV2, it enters the indoor heat exchanger to absorb heat, and then returns to the refrigerant on the gas side stop valve of the outdoor unit, enters the S pipe of the four-way valve 16, and enters the gas-liquid separator 20, completing the entire refrigerant circulation process. Fig.11 shown.

[0103] When operating under heating conditions, the unit can switch between various heating states by changing the opening and closing states of each solenoid valve. When the outdoor heat exchanger 12 does not need to be defrosted, the outdoor fan 15 with a constant speed swing head draws air from various angles on the back of the outdoor heat exchanger 12 to ensure that the wind field distribution at the edge of the outdoor heat exchanger 12 is more uniform without significant changes in the central wind field, thereby enhancing the normal heating of the unit. When the outdoor heat exchanger 12 needs to be defrosted, combined with the swing head function of the outdoor fan 15, the outdoor heat exchanger 12 can be heated uninterruptedly in different zones, that is, the function of uninterrupted heating can be realized.

[0104] When the outdoor machine is heating but not defrosting, the first solenoid valve SV1, the second solenoid valve SV2, and the fifth solenoid valve SV5 are opened, and the third solenoid valve SV3, the fourth solenoid valve SV4, and the sixth solenoid valve SV6 are closed. After the refrigerant participating in the cycle is compressed by the compressor 17 and enters the four-way valve 16, the refrigerant first passes through the indoor heat exchanger, and then passes through the fifth solenoid valve SV5 and the one-way valve CV1, as well as the first electronic expansion valve 18 and the second electronic expansion valve 19. Since the outdoor fan 15 can shake its head through the shaking mechanism 14, the wind speed in the edge area of ​​the outdoor heat exchanger 12 is increased, and the wind field distribution at the edge of the outdoor heat exchanger 12 is optimized. It flows into the outdoor heat exchanger 12 to absorb heat, and finally passes through the second solenoid valve SV2 and the first solenoid valve SV1, enters the S pipe of the four-way valve, and then enters the gas-liquid separator 20, completing the entire refrigerant circulation process. Fig.12 shown.

[0105] For the external unit circulation system, when it is detected that Te1 and Te2 of the heat exchanger both meet the time condition and a certain temperature condition, the second outdoor heat exchanger 122 is given priority for defrosting. When only the heat exchanger in a certain area meets the conditions, the solenoid valve can be directly switched to defrost it, achieving the purpose of uninterrupted heating.

[0106] By defrosting the first outdoor heat exchanger 121 and the second outdoor heat exchanger 122 separately, when the outdoor unit detects that the temperature of the second outdoor heat exchanger 122 is ≤Te, the second outdoor heat exchanger 122 starts to defrost, and the first outdoor heat exchanger 121 serves as an evaporator.

[0107] When the second outdoor heat exchanger 122 meets the defrost conditions, the first solenoid valve SV1, the fourth solenoid valve SV4, and the sixth solenoid valve SV6 are opened, the second solenoid valve SV2 and the third solenoid valve SV3 and the fifth solenoid valve SV5 are closed, the fan head exchanges heat with the first outdoor heat exchanger 121, and the wind speed of the second outdoor heat exchanger 122 is reduced, thereby quickly melting the frost layer of the second outdoor heat exchanger 122.

[0108] At this time, after the compressed refrigerant enters the D pipe of the four-way valve from the compressor, a part of it enters the second outdoor heat exchanger 122 through the first solenoid valve SV1 to absorb heat and melt the frost layer on its surface, and then enters the first outdoor heat exchanger 121 through the one-way valve and the fourth solenoid valve SV4.

[0109] The other part enters the indoor unit through the gas-side stop valve, exchanges heat with the indoor air, and then enters the outdoor unit through the liquid-side stop valve. Then, after being combined with the refrigerant condensed by the second outdoor heat exchanger 122, it enters the first outdoor heat exchanger 121 through the one-way valve and the fourth solenoid valve SV4 to absorb heat from the outdoor environment. Finally, it enters the S pipe of the four-way valve and enters the gas-liquid separator to complete the entire refrigerant circulation process.

[0110] Therefore, when the outdoor unit detects that the temperature of the first outdoor heat exchanger 121 is ≤Te, the first outdoor heat exchanger 121 starts to defrost, and when the second outdoor heat exchanger 122 serves as an evaporator, the first solenoid valve SV1, the fourth solenoid valve SV4, and the sixth solenoid valve SV6 are closed, and the second solenoid valve SV2, the third solenoid valve SV3 and the fifth solenoid valve SV5 are opened, and the fan head exchanges heat with the second outdoor heat exchanger 122, and the wind speed of the first outdoor heat exchanger 121 is reduced, thereby quickly melting the frost layer of the heat exchanger.

[0111] At this time, after the compressed refrigerant enters the D pipe of the four-way valve from the compressor 17, a part of it enters the first outdoor heat exchanger 121 through the third solenoid valve SV3 to absorb heat and melt the frost layer on its surface, and then enters the second outdoor heat exchanger 122 through the one-way valve CV2 and the fifth solenoid valve SV5.

[0112] The other part enters the indoor unit through the gas-side stop valve, exchanges heat with the indoor air, and then enters the outdoor unit through the liquid-side stop valve. Then, after being combined with the refrigerant condensed by the first outdoor heat exchanger 121, it enters the second outdoor heat exchanger 122 through the one-way valve and the fifth solenoid valve SV5 to absorb heat from the outdoor environment. Finally, it enters the S pipe of the four-way valve and enters the gas-liquid separator 20, completing the entire refrigerant circulation process.

[0113] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0115] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioning system, comprising an outdoor unit, characterized in that: The outdoor unit comprises: chassis; an outdoor heat exchanger, which is fixedly disposed in the casing; A supporting mechanism, which is fixed in the casing and located on one side of the outdoor heat exchanger; A shaking head mechanism, which is fixed to the supporting mechanism; An outdoor fan is connected to the shaking mechanism, and the shaking mechanism is used to drive the outdoor fan to shake and rotate.

2. The air conditioning system according to claim 1, characterized in that: The shaking head mechanism comprises: A fixing seat, which is fixed to the supporting mechanism, wherein a cavity is formed in the fixing seat, and an axial hole is formed on a side surface of the fixing seat facing away from the supporting mechanism, wherein the axial hole is connected to the cavity; An oscillating motor is fixed in the cavity, and a power output shaft of the oscillating motor is coaxially arranged with the shaft hole; The connecting part has a first connecting shaft at one end and a connecting hole at the other end. The first connecting shaft is connected to the power output shaft of the oscillating motor. A second connecting shaft is formed on the outdoor fan, and the second connecting shaft is fixed to the connecting hole.

3. The air conditioning system according to claim 2, characterized in that: The supporting mechanism comprises: A support body is arranged vertically and is fixed to the outdoor heat exchanger. An assembly hole matching the fixing seat is formed on the support body. A side of the assembly hole facing away from the outdoor heat exchanger protrudes to form a limiting portion. The fixing seat extends into the assembly hole and is fixed to the limiting portion.

4. The air conditioning system according to claim 3, characterized in that: The support mechanism also includes: An upper connecting portion, which is connected to the top end of the supporting body and extends in a horizontal direction, and the upper connecting portion is fixed to the top plate of the housing; The lower connecting part is connected to the bottom end of the supporting body and extends in the horizontal direction, and the lower connecting part is fixed to the bottom plate of the casing.

5. The air conditioning system according to claim 2, characterized in that: The first connecting shaft and the second connecting shaft are arranged non-parallel, and the second connecting shaft extends obliquely from the connecting portion toward the axial direction of the first connecting shaft.

6. The air conditioning system according to any one of claims 2 to 5, characterized in that: The shaking head mechanism also includes: There are two connecting arms, which are symmetrically fixedly connected to the two sides of the fixing seat; The limiting frame has two groups of frame edges arranged opposite to each other, wherein the first group of frame edges is rotationally connected to the two connecting arms in a one-to-one correspondence, and the second group of frame edges is rotationally connected to the outdoor fans respectively.

7. The air conditioning system according to claim 6, characterized in that: The second group of frames are respectively provided with second shaft holes, and the two second shaft holes are coaxially arranged. The outdoor fan comprises: A fan, wherein the fan is provided with a second rotating shaft corresponding to the second rotating shaft hole one by one, the fan is inserted into the limit frame, and the second rotating shaft is inserted into the second rotating shaft hole corresponding thereto; A fan blade connected to a power output shaft of the fan, and the fan drives the fan blade to rotate; First rotating shafts are fixed to the outer sides of the first group of frame edges respectively, and the two first rotating shafts are coaxially arranged. The connecting arm is provided with second rotating shaft holes corresponding to the first rotating shafts, and the first rotating shaft is inserted into the corresponding first rotating shaft holes.

8. The air conditioning system according to any one of claims 1 to 5, characterized in that: There are two outdoor heat exchangers, and the two outdoor heat exchangers share one outdoor fan, or each outdoor heat exchanger corresponds to one outdoor fan.

9. The air conditioning system according to claim 8, characterized in that: The two outdoor heat exchangers are respectively a first outdoor heat exchanger and a second outdoor heat exchanger, and the air conditioning system further comprises: A four-way valve, wherein one path of a C tube of the four-way valve is connected to a first end of a first outdoor heat exchanger through a first solenoid valve, and the other path is connected to a first end of a second outdoor heat exchanger through a second solenoid valve; A compressor, one of the exhaust ports of the compressor is connected to the D pipe of the four-way valve, another is connected to the first end of the first outdoor heat exchanger through the third solenoid valve, and the third is connected to the first end of the second outdoor heat exchanger through the fourth solenoid valve.

10. The air conditioning system according to claim 9, characterized in that: The second end of the first outdoor heat exchanger is connected to the first electronic expansion valve. The second end of the second outdoor heat exchanger is connected to the first branch and the second branch respectively after being connected to the second electronic expansion valve. The first branch is provided with a fifth solenoid valve, and the second branch is provided with a sixth solenoid valve.

Images