Air conditioner outdoor unit and air conditioner

Abstract

The invention discloses an air conditioner outdoor unit and an air conditioner. The air conditioner outdoor unit comprises a shell; the partition plate is arranged in the shell and divides the interior of the shell into a heat exchange chamber and a mounting chamber; the first-stage heat exchanger assembly is provided with a first-stage main path and a first-stage auxiliary path, the second-stage heat exchanger assembly is provided with a second-stage main path and a second-stage auxiliary path, and the enthalpy spraying compressor is fixed in the mounting cavity; the outdoor heat exchanger is fixed in the heat exchange chamber; a first port of the first-stage main path is communicated with the indoor heat exchanger, a second port of the first-stage main path is communicated with a first port of the second-stage main path, and a second port of the second-stage main path is communicated with the outdoor heat exchanger; a first port of the first-stage auxiliary road is communicated with a second port of the second-stage main road through a first throttling component, a second port of the first-stage auxiliary road is communicated with an enthalpy spraying opening of the enthalpy spraying compressor, a first port of the second-stage auxiliary road is communicated with a second port of the first-stage main road through a second throttling component, and the second port of the second-stage auxiliary road is communicated with an inlet of the enthalpy spraying compressor. The operation performance of the air conditioner with the air conditioner outdoor unit is better.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of air conditioning technology, and specifically refers to an air conditioning outdoor unit and an air conditioner. Background Art

[0002] In existing heat pump air conditioning systems, the problem of ultra-low temperature heating capacity attenuation is a major problem. In the past, the low temperature heating capacity was generally improved by adding electric heating to the indoor unit, but this method has low energy efficiency. In recent years, jet enthalpy technology has gradually been widely used. Through the jet enthalpy loop, a part of the refrigerant is bypassed back to the compressor to improve the compressor's work capacity. However, in order to achieve the effect of jet enthalpy, the liquid intake position of the economizer is often set at the bypass position upstream or downstream of the compressor. However, under ultra-low temperature heating conditions, the capacity of the jet enthalpy loop will be easily limited. Summary of the invention

[0003] The embodiment of the present application provides an air-conditioning outdoor unit, comprising: a shell; a partition plate, which is vertically arranged in the shell and divides the interior of the shell into a heat exchange chamber and an installation chamber; a primary heat exchanger assembly, a secondary heat exchanger assembly and an enthalpy injection compressor, all of which are fixed in the installation chamber; an outdoor heat exchanger, which is fixed in the heat exchange chamber; wherein the primary heat exchanger assembly has a primary main circuit and a primary auxiliary circuit, and the secondary heat exchanger assembly has a secondary main circuit and a secondary auxiliary circuit, the first port of the primary main circuit is configured to be connected to the indoor heat exchanger, the second port is connected to the first port of the secondary main circuit, the second port of the secondary main circuit is connected to the outdoor heat exchanger, the first port of the primary auxiliary circuit is connected to the second port of the secondary main circuit through a first throttling component, and the second port is connected to the enthalpy injection port of the enthalpy injection compressor, the first port of the secondary auxiliary circuit is connected to the second port of the primary main circuit through a second throttling component, and the second port is connected to the inlet of the enthalpy injection compressor.

[0004] In some exemplary embodiments, the primary heat exchanger assembly includes: a primary heat exchanger having the primary main circuit and the primary auxiliary circuit; a mounting frame, the primary heat exchanger is fixed to the mounting frame, and the mounting frame is fixed to the partition; and a first shock-absorbing pad, which is arranged between the mounting frame and the partition and separates the mounting frame and the partition.

[0005] In some exemplary embodiments, the first shock-absorbing pad is provided with a first annular rib, the partition is provided with a first through hole, the first annular rib is penetrated through the first through hole and extends to the side of the partition facing away from the mounting frame, the first bolt passes through the mounting frame, the first shock-absorbing pad and the first annular rib in sequence and extends to the side of the partition facing away from the mounting frame, the first nut is located on the side of the partition facing away from the mounting frame and is screwed on the first bolt, and the first nut is against the end face of the first annular rib and is spaced from the partition.

[0006] In some exemplary embodiments, the mounting frame includes: a first folding plate having a first plate section and a second plate section, the second plate section being located on the side of the first plate section facing away from the partition, the first plate section being provided with an avoidance hole, the first shock-absorbing pad being provided with a supporting boss, the first plate section being provided on the side of the first shock-absorbing pad facing away from the partition, the supporting boss extending through the avoidance hole to the side of the first plate section facing away from the partition; and a second folding plate, which is assembled with the first folding plate and encloses a limiting hole, the primary heat exchanger being limited in the limiting hole and abutting against the table surface of the supporting boss.

[0007] In some exemplary embodiments, one end of the second folding plate adjacent to the second plate segment is plug-connected with the second plate segment, and one end of the second folding plate adjacent to the first plate segment is provided with a flange, and the flange abuts against the side of the first shock-absorbing pad facing away from the partition, the first shock-absorbing pad is provided with a second annular rib, and the partition is provided with a second through hole, the second annular rib is passed through the second through hole and extends to the side of the partition facing away from the mounting frame, the second bolt passes through the flange, the first shock-absorbing pad and the second annular rib in sequence and extends to the side of the partition facing away from the mounting frame, the second nut is located on the side of the partition facing away from the mounting frame and is screwed onto the second bolt, and the second nut abuts against the end face of the second annular rib and is spaced from the partition.

[0008] In some exemplary embodiments, the secondary heat exchanger assembly includes: a secondary heat exchanger having the secondary main circuit and the secondary auxiliary circuit; a fixing plate, the secondary heat exchanger is fixed on the fixing plate, and the fixing plate is fixed in the installation chamber; and a second shock-absorbing pad, which is arranged between the fixing plate and the secondary heat exchanger and separates the fixing plate and the secondary heat exchanger.

[0009] In some exemplary embodiments, the secondary heat exchanger is provided with a screw, the fixing plate is provided with a third through hole, the second shock-absorbing pad is provided with a third annular rib, the third annular rib is passed through the third through hole and extends to the side of the fixing plate facing away from the secondary heat exchanger, the screw passes through the second shock-absorbing pad and the third annular rib in sequence and extends to the side of the fixing plate facing away from the secondary heat exchanger, the third nut is located on the side of the fixing plate facing away from the secondary heat exchanger and is screwed on the screw, and the third nut is abutted against the end face of the third annular rib and is spaced from the fixing plate.

[0010] In some exemplary embodiments, the air conditioner outdoor unit also includes: a gas-liquid separator fixed in the installation chamber; a mounting plate disposed on the top of the gas-liquid separator, the fixing plate being fixed to the mounting plate; and a third shock-absorbing pad disposed between the fixing plate and the mounting plate and separating the fixing plate and the mounting plate.

[0011] In some exemplary embodiments, the fixed plate includes a third plate segment and a fourth plate segment, the fourth plate segment is provided with a snap-fitting portion, a positioning portion and a screw-fitting portion, the mounting plate is provided with a snap-fitting portion, a positioning fitting portion and a screw-fitting portion, the snap-fitting portion is snap-connected with the snap-fitting portion, the positioning portion is plug-connected with the positioning fitting portion, the screw-fitting portion is screw-connected with the screw-fitting portion, the third plate segment is adjacent to the partition, and an isolation shock-absorbing pad is provided between the third plate segment and the partition, and the secondary heat exchanger and the second shock-absorbing pad are fixed to the third plate segment.

[0012] An embodiment of the present application also provides an air conditioner, comprising an air conditioner outdoor unit as described in any of the above embodiments.

[0013] The technical solution provided in the embodiment of the present application is that the air-conditioning outdoor unit is applied to the air conditioner. When the air conditioner is in heating operation, the refrigerant flow direction is: the outlet of the spray compressor-indoor heat exchanger-primary main road-secondary main road-outdoor heat exchanger-inlet of the spray compressor. After the high-temperature and high-pressure gaseous refrigerant compressed by the spray compressor flows to the indoor heat exchanger, it is liquefied and releases heat through the indoor heat exchanger, reaches the outdoor heat exchanger through the primary main road and the secondary main road, vaporizes and absorbs heat through the outdoor heat exchanger, and finally returns to the inlet of the spray compressor; when the first throttling component is opened, the primary auxiliary road can take liquid from the second port of the secondary main road, and can also directly transport the gaseous refrigerant to the spray port of the spray compressor, so that the air conditioner operates in the first-stage jet enthalpy increase state. Since the liquid taking position of the primary auxiliary road is located in the secondary main road After the main circuit, the density of the supercooled refrigerant becomes larger, thereby increasing the mass flow rate of the refrigerant at the first port of the first-level auxiliary circuit, thereby improving the jet enthalpy increase capacity of the first-level auxiliary circuit; when the second throttling component is also opened, the secondary auxiliary circuit can take liquid from the second port of the first-level main circuit, and directly transport part of the refrigerant to the inlet of the jet enthalpy compressor, which can share the heat exchange load of the outdoor heat exchanger and increase the evaporation temperature, so that the air conditioner operates in the second-level jet enthalpy increase state, and can also ensure that the temperature of the refrigerant returning to the inlet of the jet enthalpy compressor will not be too low, which can increase the suction pressure at the inlet of the jet enthalpy compressor and expand the operating range of low-temperature heating. On the other hand, the condensing pressure of the refrigerant after the low-pressure boost is increased after the jet enthalpy compressor does work, which can improve the heat exchange capacity on the indoor side. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic block diagram of the structure of an air conditioner provided in some embodiments of the present application;

[0015] Figure 2 A schematic diagram of a partial structure of a primary heat exchanger assembly of an air conditioner outdoor unit provided in some embodiments of the present application;

[0016] Figure 3 for Figure 2 A schematic diagram of the structure after the partition, the first shock-absorbing pad and the first folding plate are assembled;

[0017] Figure 4 A schematic structural diagram of the relative positions of a gas-liquid separator, a partition plate, and a second heat exchanger assembly in an air conditioner outdoor unit provided in some embodiments of the present application;

[0018] Figure 5 for Figure 4 A schematic cross-sectional view of the second heat exchanger assembly at the second heat exchanger;

[0019] Figure 6 for Figure 4 A schematic cross-sectional view of the second heat exchanger assembly at the third damping pad;

[0020] Figure 7 for Figure 4 A schematic diagram of the structure of the combined structure of the fixing plate and the mounting plate;

[0021] Figure 8 A schematic diagram of a partial structure of a gas-liquid separator in an air conditioner outdoor unit provided in some embodiments of the present application;

[0022] Fig. 9 A schematic diagram of the structure after the fixing plate and the mounting plate in the air conditioner outdoor unit are assembled in some embodiments of the present application.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 100 indoor heat exchanger, 300 partition, 400 primary heat exchanger assembly, 410 primary heat exchanger, 411 primary main road, 412 primary auxiliary road, 420 mounting frame, 421 first folding plate, 422 avoidance hole, 423 second folding plate, 424 flange, 430 first shock-absorbing pad, 432 supporting boss, 500 secondary heat exchanger assembly, 510 secondary heat exchanger, 511 secondary main road, 512 secondary auxiliary road, 513 screw, 520 fixed plate, 521 third plate section, 522 fourth plate section, 530 second shock-absorbing pad, 531 third annular rib, 532 clamping column, 600 spray enthalpy compressor, 700 gas-liquid separator, 710 mounting plate, 720 third shock-absorbing pad, 721 mounting column, 722 limiting boss, 800 four-way valve, 900 isolation shock-absorbing pad, 910 first throttling component, 920 second throttling component, 930 liquid storage tank, 940 outdoor heat exchanger. DETAILED DESCRIPTION

[0025] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0026] The air conditioner provided in the embodiment of the present application includes an air conditioner indoor unit and an air conditioner outdoor unit, such as Figure 1 As shown, the air conditioner indoor unit includes an indoor heat exchanger 100. Figure 1 and Figure 2As shown, the air conditioner outdoor unit includes: a shell; a partition 300, which is vertically arranged in the shell and divides the interior of the shell into a heat exchange chamber and an installation chamber; a primary heat exchanger assembly 400, a secondary heat exchanger assembly 500 and an injection enthalpy compressor 600, and the primary heat exchanger assembly 400, the secondary heat exchanger assembly 500 and the injection enthalpy compressor 600 are all fixed in the installation chamber; an outdoor heat exchanger 940, and the outdoor heat exchanger 940 is fixed in the heat exchange chamber; wherein the primary heat exchanger assembly 400 has a primary main circuit 411 and a primary auxiliary circuit 412, and the secondary heat exchanger assembly 500 has a secondary main circuit 511 and a secondary auxiliary circuit Route 512, the first port of the primary main route 411 is arranged to be connected to the indoor heat exchanger 100, the second port is connected to the first port of the secondary main route 511, the second port of the secondary main route 511 is connected to the outdoor heat exchanger 940, the first port of the primary auxiliary route 412 is connected to the second port of the secondary main route 511 through the first throttling component 910, the second port is connected to the injection enthalpy port c of the injection enthalpy compressor 600, the first port of the secondary auxiliary route 512 is connected to the second port of the primary main route 411 through the second throttling component 920, the second port is connected to the inlet b of the injection enthalpy compressor 600.

[0027] The air conditioner outdoor unit is applied to air conditioners, such as Figure 1As shown, when the air conditioner is in heating operation, the refrigerant flow direction is (at this time, the first port is the inlet and the second port is the outlet): outlet a of the spray enthalpy compressor 600 - indoor heat exchanger 100 - primary main path 411 - secondary main path 511 - outdoor heat exchanger 940 - inlet b of the spray enthalpy compressor 600. After being compressed by the spray enthalpy compressor 600, the high-temperature and high-pressure gaseous refrigerant flows to the indoor heat exchanger 100, passes through the indoor heat exchanger 100 for liquefaction and heat release, and passes through a The primary main path 411 and the secondary main path 511 reach the outdoor heat exchanger 940, vaporize and absorb heat through the outdoor heat exchanger 940, and finally return to the inlet of the injection enthalpy compressor 600; when the first throttling component 910 is opened, the primary auxiliary path 412 can take liquid from the second port of the secondary main path 511, and can also directly transport the gaseous refrigerant to the injection enthalpy port c of the injection enthalpy compressor 600, so that the air conditioner operates in the primary injection enthalpy increase state. The liquid taking position of 12 is located after the secondary main circuit 511, and the density of the supercooled refrigerant becomes larger, which can increase the mass flow rate of the refrigerant at the first port of the primary auxiliary circuit 412, so that the jet enthalpy increasing capacity of the primary auxiliary circuit 412 is improved; when the second throttling component 920 is also opened, the secondary auxiliary circuit 512 can take liquid from the second port of the primary main circuit 411, and directly transport part of the refrigerant to the inlet of the jet enthalpy compressor 600, which can share the heat exchange load of the outdoor heat exchanger 940 and increase the evaporation temperature, so that the air conditioner operates in the secondary jet enthalpy increasing state, and can also ensure that the temperature of the refrigerant returning to the inlet of the jet enthalpy compressor 600 will not be too low, which can increase the suction pressure at the inlet of the jet enthalpy compressor 600 and expand the operating range of low-temperature heating. On the other hand, the condensing pressure of the refrigerant after the low-pressure boost is increased after the jet enthalpy compressor 600 does work, which can improve the heat exchange capacity of the indoor heat exchanger 100.

[0028] In some examples, such as Figures 1 to 3 As shown, the primary heat exchanger assembly 400 includes: a primary heat exchanger 410, the primary heat exchanger 410 has a primary main path 411 and a primary auxiliary path 412; a mounting frame 420, the primary heat exchanger 410 is fixed to the mounting frame 420, and the mounting frame 420 is fixed to the partition 300; and a first shock-absorbing pad 430, the first shock-absorbing pad 430 is arranged between the mounting frame 420 and the partition 300, and separates the mounting frame 420 and the partition 300.

[0029] When the first throttling component 910 is opened for throttling (the refrigerant passing through the first throttling component 910 is a gas-liquid two-phase refrigerant, and the impact of the liquid refrigerant in the gas-liquid two-phase refrigerant is relatively large), it will cause the primary heat exchanger 410 and the pipeline connected thereto to vibrate greatly. The primary heat exchanger 410 is fixed on the mounting frame 420, and the mounting frame 420 is fixed on the partition 300. The first shock-absorbing pad 430 is arranged between the mounting frame 420 and the partition 300, and separates the mounting frame 420 and the partition 300, so as to prevent the primary heat exchanger 410 and the copper pipe connected thereto from vibrating greatly and generating noise and abnormal sound. This scheme also prevents the noise generated by the primary heat exchanger 410 and the copper pipe connected thereto from being directly transmitted to the middle partition 300.

[0030] In some embodiments, the first shock-absorbing pad 430 is provided with a first annular convex rib, the partition 300 is provided with a first through hole, the first annular convex rib is penetrated in the first through hole and extends to the side of the partition 300 facing away from the mounting frame 420, the first bolt passes through the mounting frame 420, the first shock-absorbing pad 430 and the first annular convex rib in sequence and extends to the side of the partition 300 facing away from the mounting frame 420, the first nut is located on the side of the partition 300 facing away from the mounting frame 420 and is screwed onto the first bolt, and the first nut abuts against the end face of the first annular convex rib and is spaced from the partition 300. A first annular groove is provided at a position adjacent to the first shock-absorbing pad 430 on the outer circumference of the first annular convex rib, and the hole wall of the first through hole is inserted into the first annular groove.

[0031] In this solution, the first shock-absorbing pad 430 and the first annular rib completely isolate the mounting frame 420 and the partition 300, the first-stage heat exchanger 410 and the partition 300, the first bolt and the partition 300, and the first nut and the partition 300. This can better prevent the larger vibrations generated by the first-stage heat exchanger 410 and the copper pipe connected to it from being transmitted to the partition 300, so the noise and abnormal sound generated by the partition 300 are smaller.

[0032] In some embodiments, Figures 2 to 3As shown, the mounting frame 420 includes: a first folding plate 421 having a first plate section and a second plate section connected to each other, the second plate section is located on the side of the first plate section facing away from the partition 300, the first plate section is provided with an avoidance hole 422, the first shock-absorbing pad 430 is provided with a supporting boss 432, the first plate section is provided on the side of the first shock-absorbing pad 430 facing away from the partition 300, the supporting boss 432 passes through the avoidance hole 422 and extends to the side of the first plate section facing away from the partition 300; and a second folding plate 423, the second folding plate 423 is assembled together with the first folding plate 421 and encloses a limiting hole, the primary heat exchanger 410 is limited in the limiting hole and abuts against the table surface of the supporting boss 432, and the supporting boss 432 can further reduce the vibration generated by the primary heat exchanger 410. Among them, the lip of the first-stage heat exchanger 410 is pressed against the side of the first shock-absorbing pad 430 facing away from the partition 300 (the area outside the supporting boss 432), so that the first-stage heat exchanger 410 is firmly positioned in the limiting hole to prevent the first-stage heat exchanger 410 from loosening in the limiting hole.

[0033] In some embodiments, Figures 2 to 3 As shown, one end of the second folding plate 423 adjacent to the second plate segment is plugged and connected with the second plate segment, and one end of the second folding plate 423 adjacent to the first plate segment is provided with a flange 424, and the flange 424 abuts against the side of the first shock-absorbing pad 430 that faces away from the partition 300. The first shock-absorbing pad 430 is provided with a second annular convex rib, and the partition 300 is provided with a second through hole. The second annular convex rib is penetrated in the second through hole and extends to the side of the partition 300 that faces away from the mounting frame 420. The second bolt passes through the flange 424, the first through hole, and the second through hole in sequence. A shock-absorbing pad 430 and a second annular convex rib extend to the side of the partition 300 facing away from the mounting frame 420, the second nut is located on the side of the partition 300 facing away from the mounting frame 420 and is screwed onto the second bolt, and the second nut abuts against the end face of the second annular convex rib and is spaced from the partition 300. This solution can prevent the vibration on the primary heat exchanger 410 from being transmitted to the partition 300 through the second folding plate 423 via the second bolt and the second nut, so the noise and abnormal sound generated by the vibration of the partition 300 are smaller. Among them, a second annular groove is provided at a position adjacent to the first shock-absorbing pad 430 on the outer circumference of the second annular convex rib, and the hole wall of the second through hole is inserted into the second annular groove.

[0034] In some embodiments, the partition 300 is provided with a plurality of reinforcing structures, which are used to improve the structural strength and rigidity of the partition 300 and prevent deformation of the partition 300. The plurality of reinforcing structures may include any one or more of a bending structure and reinforcing ribs.

[0035] In some examples, such as Figure 1 , Figure 4 and Figure 5As shown, the secondary heat exchanger assembly 500 includes: a secondary heat exchanger 510, the secondary heat exchanger 510 has a secondary main path 511 and a secondary auxiliary path 512; a fixing plate 520, the secondary heat exchanger 510 is fixed on the fixing plate 520, and the fixing plate 520 is fixed in the installation chamber; and a second shock-absorbing pad 530, the second shock-absorbing pad 530 is arranged between the fixing plate 520 and the secondary heat exchanger 510, and separates the fixing plate 520 and the secondary heat exchanger 510. Among them, a plurality of reinforcing structures are provided on the fixing plate 520, and the plurality of reinforcing structures are used to improve the structural strength and rigidity of the fixing plate 520 and prevent the fixing plate 520 from being deformed. The plurality of reinforcing structures may include any one or more of a bending structure and reinforcing ribs.

[0036] When the second throttling component 920 is throttled open (the refrigerant passing through the second throttling component 920 is a gas-liquid two-phase refrigerant, and the impact generated by the liquid refrigerant in the gas-liquid two-phase refrigerant is relatively large), it will cause the secondary heat exchanger 510 and the pipeline connected to it to vibrate greatly. The secondary heat exchanger 510 is fixed on the fixed plate 520, and the fixed plate 520 is fixed in the installation chamber. The second shock-absorbing pad 530 is arranged between the fixed plate 520 and the secondary heat exchanger 510, and separates the fixed plate 520 and the secondary heat exchanger 510, so as to prevent the large vibration generated by the secondary heat exchanger 510 and the copper pipe connected to it from being transmitted to the fixed plate 520, causing the fixed plate 520 to vibrate greatly.

[0037] In some examples, such as Figure 1 , Figures 6 to 9 As shown, the air conditioner outdoor unit also includes: a gas-liquid separator 700, which is fixed in the installation chamber; a mounting plate 710, which is fixed on the top of the gas-liquid separator 700, and the fixing plate 520 is fixed on the mounting plate 710; and a third shock-absorbing pad 720, which is arranged between the fixing plate 520 and the mounting plate 710 and separates the fixing plate 520 and the mounting plate 710 to prevent the vibration generated by the fixing plate 520 from being transmitted to the gas-liquid separator 700 through the mounting plate 710, so that the noise and abnormal sound generated by the gas-liquid separator 700 are smaller. This solution also prevents the noise generated by the secondary heat exchanger 510 and the copper pipe connected thereto from being transmitted to the gas-liquid separator 700. The third shock-absorbing pad 720 is provided with a mounting column 721, and a limiting boss 722 is provided at the end of the mounting column 721. A slot is formed between the limiting boss 722, the mounting column 721 and the third shock-absorbing pad 720. A fixing hole is provided on the fixing plate 520, and the mounting column 721 is inserted into the fixing hole. The hole wall of the fixing hole is inserted into the slot, and the limiting boss 722 prevents the mounting column 721 from falling out of the fixing hole. In addition, the mounting plate 710 also reinforces and fixes the top of the gas-liquid separator 700, so that the welding pipeline part at the top of the gas-liquid separator 700 is less likely to have a problem of open welding due to shaking.

[0038] Among them, Figure 1 As shown, the air conditioner further includes a four-way valve 800, the inlet of the spray enthalpy compressor 600 is connected to the second port of the gas-liquid separator 700 through the liquid storage tank 930, the first port of the gas-liquid separator 700, the outlet of the spray enthalpy compressor 600, the outdoor heat exchanger 940 and the indoor heat exchanger 100 are connected through the four-way valve 800, and the second port of the secondary auxiliary road 512 is connected to the first port of the gas-liquid separator 700. When the air conditioner is in heating operation, when the second throttling component 920 is opened, the secondary auxiliary road 512 takes liquid from the second port of the primary main road 411, and directly transports part of the refrigerant to the first port of the gas-liquid separator 700, and after passing through the gas-liquid separator 700, it flows from the second port of the gas-liquid separator 700 to the inlet of the spray enthalpy compressor 600.

[0039] In some embodiments, Figure 5 As shown, the secondary heat exchanger 510 is provided with a screw 513, the fixing plate 520 is provided with a third through hole, the second shock absorbing pad 530 is provided with a third annular convex rib 531, the third annular convex rib 531 is penetrated in the third through hole and extends to the side of the fixing plate 520 facing away from the secondary heat exchanger 510, the screw 513 sequentially passes through the second shock absorbing pad 530 and the third annular convex rib 531 and extends to the side of the fixing plate 520 facing away from the secondary heat exchanger 510, the third nut is located on the side of the fixing plate 520 facing away from the secondary heat exchanger 510 and is screwed on the screw 513, and the third nut abuts against the end face of the third annular convex rib 531, and the third nut is spaced from the fixing plate 520. It can be, for example Figure 6 As shown, the second shock absorbing pad 530 is further provided with a clamping column 532 , which passes through the fixing plate 520 and is clamped on the fixing plate 520 , so as to pre-fix the second shock absorbing pad 530 on the fixing plate 520 .

[0040] In this solution, the second shock-absorbing pad 530 and the third annular rib 531 completely isolate the fixing plate 520 and the secondary heat exchanger 510, the fixing plate 520 and the screw 513, and the fixing plate 520 and the third nut. The third shock-absorbing pad 720 separates the fixing plate 520 and the mounting plate 710. This can better prevent the larger vibration and noise generated by the secondary heat exchanger 510 and the copper pipe connected to it from being transmitted to the gas-liquid separator 700, and the noise and abnormal sound generated by the gas-liquid separator 700 are smaller.

[0041] In some embodiments, Figures 5 to 9As shown, the fixing plate 520 includes a third plate segment 521 and a fourth plate segment 522 connected to each other, the fourth plate segment 522 is provided with a clamping portion, a positioning portion and a screwing portion, the mounting plate 710 is provided with a clamping matching portion, a positioning matching portion and a screwing matching portion, the clamping portion is clamped and connected with the clamping matching portion (such as the clamping connection mode of the clamping hook and the clamping hole), the positioning portion is plugged and connected with the positioning matching portion (such as the plugging connection mode of the positioning column and the positioning hole), and the screwing portion is screwed and connected with the screwing matching portion (such as the screwing connection mode of the through hole and the screw hole), so that the mounting plate 710 and the fixing plate 520 are assembled together. After the clamping portion is clamped and connected with the clamping matching portion, and the positioning portion is plugged and connected with the positioning matching portion, the screwing portion and the screwing matching portion are aligned, and then the screwing portion and the screwing matching portion are connected by screws.

[0042] like Figure 4 and Figure 7 As shown, the third plate section 521 is adjacent to the partition 300, and an isolation damping pad 900 is provided between the third plate section 521 and the partition 300, and the secondary heat exchanger 510 and the second damping pad 530 are fixedly arranged on the third plate section 521. The isolation damping pad 900 isolates the partition 300 and the fixed plate 520 to prevent the partition 300 and the fixed plate 520 from contacting each other during the operation of the air conditioner to generate vibration and abnormal sound. The isolation damping pad 900 is configured as a foam sponge, and the foam sponge and the secondary heat exchanger 510 are located on both sides of the fixed plate 520.

[0043] Of course, the secondary heat exchanger 510 can also be fixed on the fixing plate 520 through a mounting frame, and the structure of the mounting frame is substantially the same as the structure of the mounting frame for fixing the primary heat exchanger 410. The second shock-absorbing pad 530 is arranged between the first folding plate of the mounting frame and the fixing plate 520, which can also achieve the purpose of this application. Its purpose does not deviate from the design concept of the present invention, and will not be repeated here, and it should also belong to the protection scope of this application.

[0044] In summary, the technical solution provided in the embodiment of the present application is that the air-conditioning outdoor unit is applied to the air conditioner. When the air conditioner is in heating operation, the refrigerant flow direction is: the outlet of the spray compressor-indoor heat exchanger-primary main road-secondary main road-outdoor heat exchanger-inlet of the spray compressor. After the high-temperature and high-pressure gaseous refrigerant compressed by the spray compressor flows to the indoor heat exchanger, it is liquefied and releases heat through the indoor heat exchanger, reaches the outdoor heat exchanger through the primary main road and the secondary main road, vaporizes and absorbs heat through the outdoor heat exchanger, and finally returns to the inlet of the spray compressor; when the first throttling component is opened, the primary auxiliary road can take liquid from the second port of the secondary main road, and can also directly transport the gaseous refrigerant to the spray port of the spray compressor, so that the air conditioner operates in the first-stage jet enthalpy increase state. Since the liquid taking position of the primary auxiliary road is located at After the secondary main circuit, the density of the supercooled refrigerant becomes larger, thereby increasing the mass flow rate of the refrigerant at the first port of the primary auxiliary circuit, thereby improving the jet enthalpy increase capacity of the primary auxiliary circuit; when the second throttling component is also opened, the secondary auxiliary circuit can take liquid from the second port of the primary main circuit, and directly transport part of the refrigerant to the inlet of the jet enthalpy compressor, which can share the heat exchange load of the outdoor heat exchanger and increase the evaporation temperature, so that the air conditioner operates in the secondary jet enthalpy increase state, and can also ensure that the temperature of the refrigerant returning to the inlet of the jet enthalpy compressor will not be too low, which can increase the suction pressure at the inlet of the jet enthalpy compressor and expand the operating range of low-temperature heating. On the other hand, the condensing pressure of the refrigerant after the low-pressure boost is increased after the jet enthalpy compressor does work, which can improve the heat exchange capacity on the indoor side.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0047] In the description of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air conditioner outdoor unit, characterized in that: include: case; A partition plate is vertically arranged in the shell and divides the interior of the shell into a heat exchange chamber and an installation chamber; The primary heat exchanger assembly, the secondary heat exchanger assembly and the spray enthalpy compressor are all fixed in the installation chamber; An outdoor heat exchanger is fixed in the heat exchange chamber; Wherein, the first-level heat exchanger assembly has a first-level main circuit and a first-level auxiliary circuit, and the second-level heat exchanger assembly has a second-level main circuit and a second-level auxiliary circuit. The first port of the first-level main circuit is configured to be connected to the indoor heat exchanger, and the second port is connected to the first port of the second-level main circuit. The second port of the second-level main circuit is connected to the outdoor heat exchanger. The first port of the first-level auxiliary circuit is connected to the second port of the second-level main circuit through a first throttling component, and the second port is connected to the enthalpy injection port of the enthalpy injection compressor. The first port of the second-level auxiliary circuit is connected to the second port of the first-level main circuit through a second throttling component, and the second port is connected to the inlet of the enthalpy injection compressor.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The primary heat exchanger assembly comprises: A primary heat exchanger, comprising the primary main circuit and the primary auxiliary circuit; A mounting frame, the primary heat exchanger is fixed to the mounting frame, and the mounting frame is fixed to the partition; and The first shock-absorbing pad is arranged between the mounting frame and the partition plate, and separates the mounting frame and the partition plate.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The first shock-absorbing pad is provided with a first annular convex rib, and the partition is provided with a first through hole. The first annular convex rib is penetrated in the first through hole and extends to the side of the partition facing away from the mounting frame. The first bolt passes through the mounting frame, the first shock-absorbing pad and the first annular convex rib in sequence and extends to the side of the partition facing away from the mounting frame. The first nut is located on the side of the partition facing away from the mounting frame and is screwed on the first bolt, and the first nut is against the end face of the first annular convex rib and is spaced from the partition.

4. The air conditioner outdoor unit according to claim 2, characterized in that: The mounting frame comprises: A first folding plate having a first plate section and a second plate section, the second plate section being located on a side of the first plate section facing away from the partition, the first plate section being provided with an avoidance hole, the first shock-absorbing pad being provided with a supporting boss, the first plate section being provided on a side of the first shock-absorbing pad facing away from the partition, the supporting boss extending through the avoidance hole to the side of the first plate section facing away from the partition; and The second folding plate is assembled with the first folding plate to enclose a limiting hole, and the primary heat exchanger is limited in the limiting hole and abuts against the table surface of the supporting boss.

5. The air conditioner outdoor unit according to claim 4, characterized in that: One end of the second folding plate adjacent to the second plate section is plug-connected with the second plate section, and one end of the second folding plate adjacent to the first plate section is provided with a flange, and the flange abuts against the side of the first shock-absorbing pad facing away from the partition, the first shock-absorbing pad is provided with a second annular rib, and the partition is provided with a second through hole, the second annular rib is penetrated into the second through hole and extends to the side of the partition facing away from the mounting frame, the second bolt passes through the flange, the first shock-absorbing pad and the second annular rib in sequence and extends to the side of the partition facing away from the mounting frame, the second nut is located on the side of the partition facing away from the mounting frame and is screwed onto the second bolt, and the second nut abuts against the end face of the second annular rib and is spaced from the partition.

6. The air conditioner outdoor unit according to any one of claims 1 to 5, characterized in that: The secondary heat exchanger assembly comprises: A secondary heat exchanger having the secondary main path and the secondary auxiliary path; a fixing plate, the secondary heat exchanger is fixed on the fixing plate, and the fixing plate is fixed in the installation chamber; and The second shock-absorbing pad is arranged between the fixing plate and the secondary heat exchanger, and separates the fixing plate and the secondary heat exchanger.

7. The air conditioner outdoor unit according to claim 6, characterized in that: The secondary heat exchanger is provided with a screw, the fixing plate is provided with a third through hole, the second shock-absorbing pad is provided with a third annular convex rib, the third annular convex rib is penetrated in the third through hole and extends to the side of the fixing plate facing away from the secondary heat exchanger, the screw passes through the second shock-absorbing pad and the third annular convex rib in sequence and extends to the side of the fixing plate facing away from the secondary heat exchanger, the third nut is located on the side of the fixing plate facing away from the secondary heat exchanger and is screwed on the screw, and the third nut abuts against the end face of the third annular convex rib and is spaced from the fixing plate.

8. The air conditioner outdoor unit according to claim 6, characterized in that: Also includes: A gas-liquid separator is fixed in the installation chamber; A mounting plate, arranged on the top of the gas-liquid separator, and the fixing plate is fixed to the mounting plate; and The third shock-absorbing pad is arranged between the fixing plate and the mounting plate, and separates the fixing plate and the mounting plate.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The fixed plate includes a third plate segment and a fourth plate segment, the fourth plate segment is provided with a snap-on portion, a positioning portion and a screw-on portion, the mounting plate is provided with a snap-on fitting portion, a positioning fitting portion and a screw-on fitting portion, the snap-on fitting portion is snap-connected with the snap-on fitting portion, the positioning portion is plug-connected with the positioning fitting portion, the screw-on fitting portion is screw-connected with the screw-on fitting portion, the third plate segment is adjacent to the partition, and an isolation shock-absorbing pad is provided between the third plate segment and the partition, the secondary heat exchanger and the second shock-absorbing pad are fixed to the third plate segment.

10. An air conditioner, characterized in that: It comprises an air conditioner outdoor unit as claimed in any one of claims 1 to 9.

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