A energy storage low-temperature variable-frequency heat pump system

Abstract

The present invention relates to the technical field of heat pump systems, and particularly to an energy storage low-frequency variable frequency heat pump system, which includes an outdoor unit. The outdoor unit includes a machine shell, and a water pump structure, a gas collecting pipe structure and a condenser structure are arranged inside the machine shell; multiple water pump bodies can be set according to the requirements of the liquid discharge amount and the flow rate. Adjacent two water pump bodies are connected by a driving shaft, the liquid inlet between adjacent two water pump bodies is connected, and the liquid outlet between adjacent two water pump bodies is connected; so that the liquid can be discharged after passing through multiple water pump bodies, and the flow rate and the discharge amount can be increased according to different requirements; only one motor is needed, and setting multiple water pump bodies can realize the adjustment of the flow rate; when the top positioning bar swings to the longitudinal state, the top positioning hole and the bottom positioning hole are coaxially aligned. At this time, the positioning shaft can be inserted into the top positioning hole, so that the top positioning bar is fixedly connected with the mounting bracket, maintaining the longitudinal posture and realizing the positioning installation of the motor module.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump systems, and in particular to an energy storage low-temperature variable frequency heat pump system. Background Art

[0002] At present, the control mainboard of the variable frequency heat pump unit is seriously heated during operation, even up to 90°C. In the prior art, a heat sink fin is set at the bottom of the control mainboard, and the heat sink fin is connected to the refrigerant auxiliary circuit, and the refrigerant is used to dissipate heat from the heat sink fin. However, this solution has the following problems:

[0003] Heat is dissipated through the refrigerant auxiliary circuit, which has low heat dissipation efficiency and increases the operating load of the compressor.

[0004] When the unit dissipates heat through the refrigerant auxiliary circuit, condensation is likely to form on the surface of the cooling fins due to the low temperature, and the condensed water droplets are likely to cause damage to the electronic components in the heat pump unit.

[0005] In this regard, the Chinese invention with application number CN202210136466.9 discloses an outdoor unit and a heat pump system. The outdoor unit of the present invention includes a hood, a heat exchanger is arranged in the hood; a fan is arranged in the hood, and the fan is used to suck the external air into the hood; an air guide frame is arranged in the hood, and the air guide frame is provided with an air guide port, the air guide port faces the air supply surface of the fan, and the side of the air guide frame away from the fan is provided with a first channel and a second channel, and the air inlets of the first channel and the second channel are both connected to the air guide port; a control mainboard is arranged in the hood, and the control mainboard includes a heat dissipation part, and the heat dissipation part is arranged in the second channel. By arranging a control mainboard in the hood, the heat dissipation part of the control mainboard is arranged in the second channel, when the fan maintains the suction action, the heat dissipation part in the second channel continues to exchange heat with the flowing air, thereby cooling the control mainboard, so the outdoor unit of the present application can reduce the risk of thermal damage to the control mainboard.

[0006] Most of the existing fin modules are plate-shaped structures. When the heat dissipation area needs to be increased, the area of ​​the fin module is often increased laterally to increase the overall area. However, the space of the heat pump outdoor unit is limited, so the area of ​​the fin module increased laterally cannot match the space of the heat pump outdoor unit and cannot be installed. Summary of the invention

[0007] The purpose of the present invention is to provide an energy storage low-temperature variable frequency heat pump system in view of the deficiencies in the prior art.

[0008] To achieve the above object, the technical solution of the present invention is as follows:

[0009] An energy storage low-temperature variable frequency heat pump system comprises an outdoor unit, the outdoor unit comprises a casing, a water pump structure, a gas collecting pipe structure and a condenser structure are arranged in the casing;

[0010] The water pump structure includes a motor module and a mounting bracket installed at the bottom of the motor module. The mounting bracket is provided with a plurality of water pump bodies. Each water pump body includes a housing. A water pump chamber is formed inside the housing. A rotor body is arranged in the water pump chamber. A drive shaft connected to the rotor body is installed between the top and the bottom of the housing. Two adjacent water pump bodies are coaxially connected through the drive shaft. The housing is provided with a liquid inlet and a liquid outlet that communicate with the water pump chamber. The liquid inlets between two adjacent water pump bodies are connected, and the liquid outlets between two adjacent water pump bodies are connected.

[0011] A swingable top positioning strip is further arranged at the top of the mounting bracket. A plurality of fitting blocks are arranged along the way of the top positioning strip. The fitting blocks can be embedded into the slots of the motor module. A bottom positioning hole coaxially aligned with the top positioning hole is formed at the top of the mounting bracket. A positioning shaft that can be elastically inserted into the top positioning hole is installed in the bottom positioning hole.

[0012] The gas collecting pipe structure includes a main pipe and a plurality of sub-pipes. An active connecting piece is installed between the main pipe and the sub-pipes. The active connecting piece includes a connecting rod piece for allowing the sub-pipe to move axially and radially along the main pipe. A bottom hose is installed at the bottom of the sub-pipe. The bottom hose communicates with the main pipe. An air pipe joint is installed at the top of the sub-pipe.

[0013] The condenser structure includes a fin module. The fin module includes a first heat exchange area and a second heat exchange area. The first heat exchange area and the second heat exchange area are perpendicular to each other, and are integrally and arc-shapedly connected between the first heat exchange area and the second heat exchange area. A plurality of heat exchange pipes penetrate through the fin module. Two adjacent heat exchange pipes are connected. A connecting head is installed at the end of one of the heat exchange pipes. The connecting head includes a connecting sleeve. A joint sleeve with different inner diameters is detachably sleeved inside the connecting sleeve.

[0014] The beneficial effects of the present invention: The liquid enters the water pump chamber of the housing through the liquid inlet of the water pump body, and is discharged along the liquid outlet under the rotation of the rotor body. According to the requirements of the liquid discharge volume and the flow rate, a plurality of water pump bodies can be set. Two adjacent water pump bodies are connected by a drive shaft. The liquid inlets between two adjacent water pump bodies are connected, and the liquid outlets between two adjacent water pump bodies are connected. So that the liquid can be discharged after passing through a plurality of water pump bodies. According to different requirements, the flow rate and the discharge volume can be increased. Only one motor is needed, and setting a plurality of water pump bodies can realize the adjustment of the flow rate.

[0015] When the top positioning strip swings to the longitudinal state, the top positioning hole and the bottom positioning hole are coaxially aligned. At this time, the positioning shaft can be inserted into the top positioning hole, so that the top positioning strip is fixedly connected to the mounting bracket, maintaining the longitudinal posture, and realizing the positioning installation of the motor module.

[0016] When multiple hole positions need to be connected, the auxiliary pipeline can adjust its position accordingly through the connecting rod. The auxiliary pipeline can move axially and radially along the main pipeline through the movable connector and the connecting rod, so that the air pipe joints of the auxiliary pipeline are connected to multiple hole positions, realizing the connection with multiple hole positions arranged at equal angles, and the function of gas collection is more perfect. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the outdoor unit.

[0018] Figure 2 It is a schematic structural diagram of the water pump structure.

[0019] Figure 3 It is a schematic structural diagram of the connection between the motor module and the mounting bracket.

[0020] Figure 4 It is a schematic structural diagram of the water pump body.

[0021] Figure 5 It is an exploded structural diagram of the water pump body.

[0022] Figure 6 It is an exploded structural diagram of the water pump body from another perspective.

[0023] Figure 7 It is a schematic diagram of the structure of the gas collecting pipe.

[0024] Figure 8 It is a partial schematic diagram of the structure of the gas collecting pipe.

[0025] Figure 9 It is a schematic structural diagram of the condenser structure.

[0026] Figure 10 It is a partial structural schematic diagram of the condenser structure.

[0027] Figure 11 It is a schematic structural diagram of the connector and the inlet pipe.

[0028] Figure 12 For Figure 10 The sectional structural schematic diagram of

[0029] Figure 13 It is a schematic structural diagram of the heat dissipation fins.

[0030] Reference numerals include:

[0031] 1 - Outdoor unit, 101 - Cabinet, 102 - Water pump structure, 103 - Water pump support assembly,

[0032] 11 - Motor module,

[0033] 110 - Mounting bracket, 111 - Top connecting frame, 112 - Top connecting plate, 113 - Bottom connecting frame,

[0034] 114 - Mounting groove, 115 - Side positioning strip, 116 - Top positioning strip, 117 - Fitting block, 118 - Positioning shaft,

[0035] 12 - Water pump body,

[0036] 121 - Housing, 122 - Eccentric hole, 123 - Driving shaft, 124 - Rotor body, 125 - Cylinder,

[0037] 126 - Impeller blade, 127 - Movable groove, 128 - Compression spring,

[0038] 13 - Water pump chamber,

[0039] 131 - Liquid inlet, 132 - First conduit, 133 - Liquid inlet groove, 134 - Liquid outlet, 135 - Second conduit,

[0040] 136 - Liquid outlet groove, 137 - Water pump positioning plate, 138 - Top positioning hole, 139 - Bottom positioning hole,

[0041] 2 - Gas collecting pipe structure,

[0042] 21 - Main pipe,

[0043] 211 - Sealing plug, 212 - Connecting screw sleeve, 213 - Gas collecting seat, 214 - Gas collecting chamber, 215 - Gas collecting hole,

[0044] 216 - Bottom hose, 217 - Top movable sleeve, 218 - Bottom movable sleeve, 219 - Sub - pipe,

[0045] 22 - Movable connecting piece,

[0046] 221 - First connecting rod, 222 - Second connecting rod, 223 - Rotating connecting shaft, 224 - Rotating connecting seat,

[0047] 225 - Outer wall seat, 226 - Inner end connecting shaft, 227 - Rotating connecting groove,

[0048] 3 - Condenser structure,

[0049] 31 - Fin module,

[0050] 311 - First heat exchange area, 312 - Second heat exchange area, 313 - Heat dissipation fins, 314 - Heat dissipation holes,

[0051] 315 - Contact cylinder, 319 - Bent connecting pipe,

[0052] 32 - Connector,

[0053] 321 - connecting sleeve, 322 - adapter sleeve, 323 - first guiding groove, 324 - first guiding block,

[0054] 325 - heat exchange tube,

[0055] 33 - inlet pipe,

[0056] 331 - inlet head, 332 - second guiding groove, 333 - second guiding block, 334 - external thread sleeve,

[0057] 335 - external thread structure, 336 - connector nozzle, Detailed implementation mode

[0058] The present invention will be described in detail below with reference to the accompanying drawings.

[0059] As Figure 1-13 shown, an energy storage low - temperature variable - frequency heat pump system includes an outdoor unit 1. The outdoor unit 1 includes a housing 101, and a water pump structure 102, a gas collecting pipe structure 2, and a condenser structure 3 are arranged inside the housing 101.

[0060] A water pump support assembly 103 for installing and fixing the water pump structure 102 is arranged inside the housing 101. The water pump structure 102 can be installed and fixed through the water pump support assembly 103, preventing phenomena such as shaking during use and improving stability.

[0061] The water pump structure 102 includes a motor module 11 and a mounting bracket 110 installed at the bottom of the motor module 11. The mounting bracket 110 is provided with a plurality of water pump bodies 12, and each water pump body 12 includes a housing 121.

[0062] The mounting bracket 110 includes a top connecting frame 111 and a bottom connecting frame 113. The top connecting frame 111 is formed with a top connecting plate 112 connected to the bottom of the motor module 11, and a plurality of top connecting holes are opened in the top connecting plate 112. The motor module 11 is fixedly installed on the top of the top connecting frame 111 through the top positioning holes 138. The bottom connecting frame 113 is longitudinally formed with a plurality of spaced - apart mounting grooves 114. A part of the housing 121 is embedded into the mounting grooves 114, and the bottom connecting frame 113 is further provided with side positioning strips 115 that cooperate with the outer side wall of the housing 121. The housing 121 of the water pump body 12 is embedded into the mounting grooves 114 to achieve installation, and the corresponding number of water pump bodies 12 can be installed on the bottom connecting frame 113 according to requirements.

[0063] A water pump chamber 13 is formed inside the housing 121. A rotor body 124 is disposed inside the water pump chamber 13. A drive shaft 123 connected to the rotor body 124 is installed between the top and bottom of the housing 121. Two adjacent water pump bodies 12 are coaxially connected through the drive shaft 123. The housing 121 is provided with a liquid inlet 131 and a liquid outlet 134 communicating with the water pump chamber 13. The liquid inlets 131 between two adjacent water pump bodies 12 are connected, and the liquid outlets 134 between two adjacent water pump bodies 12 are connected.

[0064] A swingable top positioning bar 116 is further provided at the top of the mounting bracket 110. A plurality of fitting blocks 117 are arranged along the top positioning bar 116. The fitting blocks 117 can be inserted into the slots of the motor module 11 and are fitted and connected with the motor module 11 to achieve the positioning of the motor module 11. A water pump positioning plate 137 is formed at the bottom of the top positioning bar 116. A top positioning hole 138 is formed in the water pump positioning plate 137. A bottom positioning hole 139 coaxially aligned with the top positioning hole 138 is formed at the top of the mounting bracket 110. A positioning shaft 118 that can be elastically inserted into the top positioning hole 138 is installed in the bottom positioning hole 139. When the top positioning bar 116 swings to the longitudinal state, the top positioning hole 138 is coaxially aligned with the bottom positioning hole 139. At this time, the positioning shaft 118 can be inserted into the top positioning hole 138, so that the top positioning bar 116 is fixedly connected to the mounting bracket 110, maintaining a longitudinal posture, and realizing the positioning and installation of the motor module 11.

[0065] The liquid enters the water pump chamber 13 of the housing 121 through the liquid inlet 131 of the water pump body 12 and is discharged along the liquid outlet 134 under the rotation of the rotor body 124. Multiple water pump bodies 12 can be provided according to the requirements of the liquid discharge volume and the flow rate. Two adjacent water pump bodies 12 are connected by the drive shaft 123. The liquid inlets 131 between two adjacent water pump bodies 12 are connected, and the liquid outlets 134 between two adjacent water pump bodies 12 are connected. So that the liquid can be discharged after passing through multiple water pump bodies 12. According to different requirements, the flow rate and the discharge volume can be increased. Only one motor is needed, and the flow rate can be adjusted by setting multiple water pump bodies 12.

[0066] Further, the housing 121 is formed with an eccentric hole 122, the drive shaft 123 is installed in the eccentric hole 122, and the rotor body 124 is connected to the drive shaft 123 rotatably installed in the eccentric hole 122; the rotor body 124 includes a cylinder 125 connected to the drive shaft 123, and the cylinder 125 is radially provided with blades 126. When the rotor body 124 rotates, the liquid entering the water pump chamber 13 from the liquid inlet 131 is deflected to the liquid outlet 134; in this embodiment, the liquid is introduced into the water pump chamber 13 of the water pump body 12 through the liquid inlet 131, and the rotor body 124 in the water pump chamber 13 rotates under the drive of the drive shaft 123. The radially arranged blades 126 move along the cavity wall of the water pump chamber 13, and the liquid entering the water pump chamber 13 is discharged to the liquid outlet 134; thus, the effect of liquid circulation is achieved.

[0067] It should be noted that since the drive shaft 123 is installed in the eccentric hole 122, when the water pump body 12 rotates in the water pump chamber 13, that is, when the blade 126 moves from the liquid inlet 131 to the liquid outlet 134, the space for liquid flow is compressed, so the liquid will be extruded to the liquid outlet 134. That is, when the motor module 11 rotates normally, the liquid can quickly flow from the liquid inlet 131 to the liquid outlet 134. Compared with the traditional coaxial structure, the water pump body 12 of this solution greatly increases the flow rate, and the efficiency of liquid circulation is higher.

[0068] Preferably, the cylinder 125 is radially formed with a movable groove 127, the blade 126 is elastically installed in the movable groove 127, and a compression spring 128 for driving the blade 126 to radially pop outwards is arranged in the movable groove 127; since the rotation trajectory of the water pump body 12 in the water pump chamber 13 is elliptical, the blade 126 will radially expand and contract along the movable groove 127 under the elastic drive of the compression spring 128, so that the outer end of the blade 126 always remains in contact with the cavity wall of the water pump chamber 13, ensuring the stability of liquid flow.

[0069] The liquid inlet 131 and the liquid outlet 134 are respectively formed longitudinally through the housing 121. The liquid inlet 131 includes a first conduit 132 longitudinally formed in the housing 121. Along the way, the first conduit 132 is formed with a liquid inlet groove 133 communicating with the water pump chamber 13. The first conduit 132 extends longitudinally towards the top and bottom respectively. The liquid inlets 131 of two adjacent water pump bodies 12 are interconnected through the first conduit 132. The liquid outlet 134 includes a second conduit 135 longitudinally formed in the housing 121. Along the way, the second conduit 135 is formed with a liquid outlet groove 136 communicating with the water pump chamber 13. The second conduit 135 extends longitudinally towards the top and bottom respectively. The liquid outlets 134 of two adjacent water pump bodies 12 are interconnected through the second conduit 135. Multiple water pump bodies 12 can be provided according to different requirements. The first conduits 132 between two adjacent water pump bodies 12 are hermetically connected, and the second conduits 135 between two adjacent water pump bodies 12 are hermetically connected; and the drive shafts 123 between two adjacent water pump bodies 12 are coaxially connected. The drive shaft 123 at the topmost end is in transmission connection with the motor shaft of the motor module 11. Driven by the motor module 11, multiple water pump bodies 12 work simultaneously. Liquid is introduced into the first conduit 132 at the lower end. After passing through the liquid inlets 131 of multiple water pump bodies 12 respectively, the liquid is discharged to the liquid outlet 134 and finally converges to the second conduit 135 at the lowermost end and is discharged, realizing the efficient circulating flow of the liquid.

[0070] A heat exchange module is further provided in the machine housing 101, and the heat exchange module is connected to the gas collecting pipe assembly. The gas collecting pipe assembly includes a main pipe 21 and multiple sub-pipes 219. The main pipe 21 of the gas collecting pipe assembly is communicated with the first end of the heat exchange module, and two adjacent heat exchange modules are communicated through the gas collecting pipe assembly.

[0071] A movable connecting piece 22 is installed between the main pipe 21 and the sub-pipe 219. The movable connecting piece 22 includes a connecting rod piece for the sub-pipe 219 to move axially and radially along the main pipe 21; a bottom hose 216 is installed at the bottom of the sub-pipe 219, and the bottom hose 216 is communicated with the main pipe 21. An air pipe joint is installed at the top of the sub-pipe 219.

[0072] When multiple hole positions need to be connected, the sub-pipe 219 can adjust its position accordingly through the connecting rod piece. The sub-pipe 219 can move axially and radially along the main pipe 21 through the movable connecting piece 22 and the connecting rod piece, so that the air pipe joint of the sub-pipe 219 is connected to multiple hole positions, realizing the connection with multiple hole positions arranged at equal angles, and the gas collecting function is more perfect.

[0073] Specifically, the movable connecting member 22 further includes a movable sleeve 217 sleeved on the top of the main pipe 21 and a movable sleeve 218 sleeved on the bottom of the main pipe 21. A first connecting rod 221 is rotatably installed between the bottom movable sleeve 218 and the auxiliary pipe 219, and a second connecting rod 222 is rotatably installed between the top movable sleeve 217 and the first connecting rod 221. In this embodiment, by simultaneously moving the top movable sleeve 217 and the bottom movable sleeve 218, the axial position of the auxiliary pipe 219 can be adjusted, and the air pipe joint installed on the top of the auxiliary pipe 219 can be close to the hole position and connected to the corresponding hole position. In addition, according to the position of the hole position, move the top movable sleeve 217 or the bottom movable sleeve 218, so that the included angle between the first connecting rod 221 and the second connecting rod 222 changes, and the distance between the auxiliary pipe 219 and the main pipe 21 can be adjusted. The air pipe joint installed on the top of the auxiliary pipe 219 can be coaxially aligned with the hole position to achieve plug-in connection.

[0074] Further, the auxiliary pipe 219 is provided with a rotating connecting member rotatably connected to the first connecting rod 221. The rotating connecting member includes a rotating connecting shaft 223 horizontally penetrating through the auxiliary pipe 219, and a rotating connecting seat 224 is installed at the end of the first connecting rod 221. One end of the first connecting rod 221 is rotatably connected to the rotating connecting shaft 223 of the auxiliary pipe 219 through the rotating connecting seat 224, so that the outer end of the first connecting rod 221 is rotatably connected to the auxiliary pipe 219, realizing the adjustment of the distance between the auxiliary pipe 219 and the main pipe 21.

[0075] Further, the rotating connecting seat 224 is provided with a movable groove, and rotating connecting holes for rotatably connecting with the rotating connecting shaft 223 are opened on both side walls of the movable groove; the rotating connecting seat 224 is rotatably connected to the rotating connecting shaft 223 of the auxiliary pipe 219 through the rotating connecting holes in the movable groove, realizing the rotation connection between the outer end of the first connecting rod 221 and the auxiliary pipe 219, and realizing the adjustment of the distance between the auxiliary pipe 219 and the main pipe 21.

[0076] Further, outer wall seats 225 are respectively formed on the outer wall of the top movable sleeve 217, and inner end connecting shafts 226 are installed on the outer wall seats 225. Rotating connecting grooves 227 for rotatably connecting with the inner end connecting shafts 226 are formed at the inner ends of the first connecting rod 221 and the second connecting rod 222; the first connecting rod 221 and the second connecting rod 222 are respectively rotatably connected to the inner end connecting shafts 226 on the outer wall of the top movable sleeve 217 through the rotating connecting grooves 227.

[0077] Preferably, the number of the first connecting rods 221 is two, and the two first connecting rods 221 are arranged in parallel at intervals, and one of the first connecting rods 221 is installed with the second connecting rod 222; under the action of the two first connecting rods 221, the main pipe 21 and the auxiliary pipe 219 always maintain a state of being arranged in parallel at intervals.

[0078] A gas collecting seat 213 is formed in the lower half of the main pipeline 21. A gas collecting cavity 214 is formed in the gas collecting seat 213. The gas collecting cavity 214 communicates with the main pipeline 21. A plurality of gas collecting holes 215 communicating with the gas collecting cavity 214 are formed at the top of the gas collecting seat 213. A connecting hose at the bottom of the auxiliary pipeline 219 is hermetically connected to the gas collecting holes 215. Since the bottom connection of the auxiliary pipeline 219 is a hose, when the position of the auxiliary pipeline 219 changes, the bottom hose 216 can keep connected to the gas collecting holes 215 of the gas collecting seat 213 without breaking, ensuring its stability and airtightness during gas collection and reducing the occurrence of leakage.

[0079] A sealing plug 211 is installed at the top of the main pipeline 21 and a connecting screw sleeve 212 is sleeved thereon. When the opening at the top of the main pipeline 21 is not in use, the top of the main pipeline 21 is sealed by the sealing plug 211 to prevent leakage at the top of the main pipeline 21. Subsequently, the main pipeline 21 can be fixed by connecting the main pipeline 21 to the screw through the connecting screw sleeve 212.

[0080] The condenser structure 3 includes a fin module 31. The fin module 31 includes a first heat exchange area 311 and a second heat exchange area 312. The first heat exchange area 311 and the second heat exchange area 312 are perpendicular to each other, and are integrally and arc-shapedly connected between the first heat exchange area 311 and the second heat exchange area 312. A plurality of heat exchange tubes 325 are passed through the fin module 31, and two adjacent heat exchange tubes 325 are connected to each other. A connector 32 is installed at the end of one of the heat exchange tubes 325. The connector 32 includes a connecting sleeve 321, and a connector sleeve 322 with different inner diameters is detachably sleeved in the connecting sleeve 321.

[0081] During heat exchange, the heat of the heat exchange tubes 325 will achieve heat transfer through the fin module 31, and the heat will be transferred to the fin module 31 for heat dissipation. In addition, since the first heat exchange area 311 and the second heat exchange area 312 are perpendicular to each other, and are integrally and arc-shapedly connected between the first heat exchange area 311 and the second heat exchange area 312, forming an L-shaped fin module 31, the fin module 31 can be adapted to the internal space shape of the outdoor unit 1 of the heat pump system, improving the space utilization rate. The connector 32 of the heat exchange tubes 325 can be connected to inlet connectors of various sizes, and can be applied to different scenarios, improving the practicality.

[0082] A bent connecting pipe 319 is arranged between the heat exchange tubes 325, and a connector nozzle 336 is installed at the end of the bent connecting pipe 319. By inserting the connector nozzle 336 into the end of the bent connecting pipe 319, a continuous and sealed pipeline is formed by a plurality of heat exchange tubes 325, and the contact area between the liquid or gas in the heat exchange tubes 325 and the fin module 31 is increased, increasing the heat exchange efficiency.

[0083] Further, the first heat exchange area 311 and the second heat exchange area 312 respectively include a plurality of heat dissipation fins 313 arranged in parallel at intervals. Coaxial and aligned heat dissipation holes 314 are formed between two adjacent heat dissipation fins 313, and the heat exchange tubes 325 can pass through the heat dissipation holes 314. A contact cylinder 315 is formed on the hole wall of the heat dissipation hole 314, and the heat exchange tube 325 can pass through the contact cylinder 315. After the heat exchange tube 325 is inserted into the heat dissipation hole 314 of the heat dissipation fin 313, the contact cylinder 315 contacts the outer wall surface of the heat exchange tube 325, which can increase the area of surface contact and further improve the heat exchange efficiency during heat exchange.

[0084] One of the connectors 32 is for inlet use, and the other connector 32 is for outlet use. The connector 32 is connected with an inlet pipe 33. An inlet head 331 inserted into the connector sleeve 322 is installed on the inlet pipe 33. A plurality of first guiding grooves 323 are axially formed on the inner wall of the inner ring of the connecting sleeve 321, and a first guiding block 324 slidably matched with the first guiding grooves 323 is axially formed on the outer wall of the connector sleeve 322. When it is necessary to cooperate and connect with inlet heads 331 of different sizes, connector sleeves 322 with different inner diameters can be inserted into the connecting sleeve 321. Through the sliding cooperation between the first guiding grooves 323 and the first guiding blocks 324, the insertion is realized, so that the inner hole diameter of the connecting sleeve 321 changes. At this time, the inlet head 331 of the inlet pipe 33 can be connected with the corresponding-sized connector 32.

[0085] Specifically, a plurality of second guiding grooves 332 are axially formed on the inner wall of the inner ring of the connector sleeve 322, and a second guiding block 333 slidably matched with the second guiding grooves 332 is axially formed on the outer wall of the inlet head 331. When the connector sleeve 322 and the inlet head 331 are connected and inserted, the inlet head 331 of the inlet pipe 33 can pass through the second guiding block 333 and the second guiding grooves 332 on the inner wall of the connector sleeve 322 to realize anti-fool insertion.

[0086] Further, an external thread structure 335 is formed on the outer wall of the connecting sleeve 321. An external thread sleeve 334 is slidably sleeved on the end of the bent connecting pipe 319, and an internal thread structure that is threadedly matched with the external thread structure 335 of the connecting sleeve 321 is formed on the inner wall of the external thread sleeve 334. After the inlet pipe 33 is connected with the connector 32, the external thread sleeve 334 located at the connector 32 can rotate and is threadedly matched with the external thread structure 335 at the end of the bent connecting pipe 319 by screwing, so as to realize screwing connection, prevent the inlet pipe 33 from falling off after being connected with the connector 32, and thus ensure the stability of the connection.

[0087] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An energy storage low-temperature variable frequency heat pump system, comprising an outdoor unit, the outdoor unit comprising a casing, characterized in that: The housing is provided with a water pump structure, an air collecting pipe structure and a condenser structure; The water pump structure comprises a motor module and a mounting bracket mounted at the bottom of the motor module, the mounting bracket is provided with a plurality of water pump bodies, the water pump body comprises a shell, a water pump cavity is formed in the shell, a rotor body is provided in the water pump cavity, a driving shaft connected to the rotor body is installed between the top and bottom of the shell; two adjacent water pump bodies are coaxially connected through the driving shaft; the shell is provided with a liquid inlet and a liquid outlet communicated with the water pump cavity; the liquid inlets of two adjacent water pump bodies are connected, and the liquid outlets of two adjacent water pump bodies are connected; The top of the mounting bracket is also provided with a swingable top positioning bar, and a plurality of interlocking blocks are provided along the top positioning bar, and the interlocking blocks can be embedded in the slots of the motor module; the top of the mounting bracket is formed with a bottom positioning hole coaxially aligned with the top positioning hole, and the bottom positioning hole is provided with a positioning shaft that can be elastically inserted into the top positioning hole; The gas collecting pipe structure comprises a main pipe and a plurality of auxiliary pipes, wherein a movable connecting piece is installed between the main pipe and the auxiliary pipe, and the movable connecting piece comprises a connecting rod for the auxiliary pipe to move axially and radially along the main pipe; a bottom hose is installed at the bottom of the auxiliary pipe, the bottom hose is connected to the main pipe, and an air pipe joint is installed at the top of the auxiliary pipe; The condenser structure comprises a fin module, the fin module comprises a first heat exchange area and a second heat exchange area, the first heat exchange area and the second heat exchange area are perpendicular to each other, and the first heat exchange area and the second heat exchange area are integrally formed and connected in an arc shape; a plurality of heat exchange tubes are passed through the fin module, and two adjacent heat exchange tubes are connected; a connector is installed at the end of one of the heat exchange tubes, and the connector comprises a connector sleeve, and connector sleeves with different inner diameters are detachably sleeved in the connector sleeve; The shell is formed with an eccentric hole, the drive shaft is installed in the eccentric hole, and the rotor body is connected to the drive shaft rotatably installed in the eccentric hole; the rotor body includes a cylinder connected to the drive shaft, and the cylinder is radially arranged with paddles, and when the rotor body rotates, the liquid entering the water pump cavity from the liquid inlet is pushed to the liquid outlet; the cylinder is radially formed with a movable groove, the paddle is elastically installed in the movable groove, and a compression spring is arranged in the movable groove to drive the paddle to pop out radially outward; The movable connecting part also includes a top movable sleeve and a bottom movable sleeve which are sleeved on the main pipeline, a first connecting rod is rotatably installed between the bottom movable sleeve and the auxiliary pipeline, and a second connecting rod is rotatably installed between the top movable sleeve and the first connecting rod; the auxiliary pipeline is provided with a rotating connecting part rotatably connected to the first connecting rod, the rotating connecting part includes a rotating connecting shaft which is transversely penetrated in the auxiliary pipeline, and a rotating connecting seat is installed at the end of the first connecting rod.

2. The energy storage low-temperature variable frequency heat pump system according to claim 1, characterized in that: The liquid inlet includes a first conduit longitudinally formed in the shell, and a liquid inlet groove connected to the water pump cavity is formed along the first conduit. The first conduit extends longitudinally to the top and the bottom respectively, and the liquid inlets of two adjacent water pump bodies are connected to each other through the first conduit.

3. The energy storage low-temperature variable frequency heat pump system according to claim 2, characterized in that: The liquid outlet includes a second conduit longitudinally formed in the shell, and the second conduit is formed with a liquid outlet groove connected to the water pump cavity along the way. The second conduit extends longitudinally to the top and the bottom respectively, and the liquid outlets of two adjacent water pump bodies are connected to each other through the second conduit.

4. The energy storage low-temperature variable frequency heat pump system according to claim 1, characterized in that: The rotating connection seat is provided with a movable groove, and the two side walls of the movable groove are provided with rotating connection holes rotatably connected to the rotating connection shaft; the outer walls of the top movable sleeve are respectively formed with outer wall seats, and the outer wall seats are installed with inner end connecting shafts, and the inner ends of the first connecting rod and the second connecting rod are both formed with rotating connection grooves rotatably connected to the inner end connecting shafts.

5. The energy storage low-temperature variable frequency heat pump system according to claim 1, characterized in that: A curved connecting pipe is arranged between the heat exchange tubes, and a joint nozzle is installed at the end of the curved connecting pipe; the first heat exchange area and the second heat exchange area respectively include a plurality of heat dissipation fins arranged in parallel and spaced apart, and two adjacent heat dissipation fins are formed with coaxially aligned heat dissipation holes, and the heat dissipation holes can be used for the heat exchange tube to pass through.

6. The energy storage low-temperature variable frequency heat pump system according to claim 5, characterized in that: The inner ring wall of the connecting sleeve is formed with a plurality of first guide grooves along the axial direction, and the outer ring wall of the joint sleeve is formed with a first guide block slidably matched with the first guide grooves along the axial direction; the connecting head is connected to the entry pipe, and the entry pipe is installed with an entry head inserted into the joint sleeve.

7. The energy storage low-temperature variable frequency heat pump system according to claim 6, characterized in that: The inner ring wall of the joint sleeve is formed with multiple second guide grooves along the axial direction, and the outer ring wall of the entry head is formed with a second guide block that slides with the second guide groove along the axial direction; the outer ring wall of the connecting sleeve is formed with an external thread structure, the end sliding sleeve of the curved connecting pipe is provided with an external thread sleeve, and the inner ring wall of the external thread sleeve is formed with an internal thread structure that threadably cooperates with the external thread structure of the connecting sleeve.

8. The energy storage low-temperature variable frequency heat pump system according to claim 7, characterized in that: The fin module also includes a side fixing plate for fixing the heat dissipation fins, and side positioning plates parallel to the heat dissipation fins are respectively formed on both sides of the side fixing plate. The side fixing plate cooperates with the side positioning plate to position and fix the multiple heat dissipation fins.

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