CN217383159U - Heat pump air conditioning system - Google Patents
Heat pump air conditioning system Download PDFInfo
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- CN217383159U CN217383159U CN202123436167.7U CN202123436167U CN217383159U CN 217383159 U CN217383159 U CN 217383159U CN 202123436167 U CN202123436167 U CN 202123436167U CN 217383159 U CN217383159 U CN 217383159U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The utility model relates to a track traffic (subway) vehicle air conditioner design and manufacturing technical field especially relate to a heat pump air conditioning system. The heat pump air conditioning system compressor and the air conditioning pipeline are respectively provided with a pressure sensor on the air conditioning pipeline positioned on the exhaust port side and the suction port side of the compressor, and the pressure sensors are detachably connected on the air conditioning pipeline. Compared with the prior art, the invention has the advantages that: the pressure sensors are respectively arranged on the air-conditioning pipelines 40 positioned on the exhaust port side and the suction port side of the compressor, so that the later-stage maintenance is facilitated, the safety is improved, and the material cost and the labor cost are saved; through making pressure sensor detachable connect in the air conditioner pipeline on to the pressure sensor's of being convenient for installation and dismantlement make things convenient for later stage maintenance.
Description
Technical Field
The utility model relates to a track transportation vehicles air conditioner design and manufacturing technical field especially relate to a heat pump air conditioning system.
Background
The existing heat pump air-conditioning system heats in winter by air conditioning, when the environment temperature is low and the humidity is high, the outdoor heat exchanger freezes, and the existing heat pump air-conditioning system almost has a defrosting process. The indoor and outdoor coil pipe temperature sensors and the high-low pressure switches are matched in the common defrosting logic control mode, the pressure switches cannot be detected in real time in the detector, particularly on a rail transit vehicle air conditioning system, the detector often needs to be overhauled by climbing the roof, the overhauling is inconvenient, the high pressure at the top is in great danger due to the fact that the power needs to be turned on in the overhauling process, the pressure switches are usually welded on an air conditioning pipeline, and the disassembling and assembling are inconvenient.
SUMMERY OF THE UTILITY MODEL
In view of this, to the above technical problem, the utility model provides a heat pump air conditioning system.
The utility model solves the technical problem, and provides the following technical scheme:
the utility model provides a heat pump air conditioning system, includes compressor and air conditioner pipeline, is located the exhaust port side and the inspiration port side of compressor be provided with pressure sensor on the air conditioner pipeline respectively, just pressure sensor detachable connect in on the air conditioner pipeline.
It can be understood that the pressure sensors are respectively arranged on the air conditioning pipeline at the exhaust port side and the suction port side of the compressor, so that later-stage maintenance is facilitated, safety is improved, and material cost and labor cost are saved; through making pressure sensor detachable connect in on the air conditioner pipeline to be convenient for pressure sensor's installation and dismantlement make things convenient for later stage maintenance.
In one embodiment, a joint is arranged on the air-conditioning pipeline, and one end of the pressure sensor, which is close to the air-conditioning pipeline, is in threaded connection with the joint.
It can be understood that one end of the pressure sensor, which is close to the air conditioner pipeline, is in threaded connection with the joint, so that the pressure sensor is convenient to mount and dismount, and later maintenance is convenient.
In one embodiment, a joint is arranged on the air conditioner pipeline, one end, close to the air conditioner pipeline, of the pressure sensor is in threaded connection with the joint, and an opposite plug is arranged at one end, far away from the air conditioner pipeline, of the pressure sensor and is electrified with an external plug in an opposite plug mode.
In one embodiment, a joint is arranged on the air-conditioning pipeline, one end, close to the air-conditioning pipeline, of the pressure sensor is in threaded connection with the joint, and one end, far away from the air-conditioning pipeline, of the pressure sensor is provided with a cable and is electrified through the cable connection.
In one embodiment, a valve needle is arranged in the joint, and an abutting piece is arranged in the pressure sensor and abuts against the valve needle along with the installation of the pressure sensor on the joint so as to communicate the pressure sensor with the air conditioning pipeline.
It can be understood that the leakage rate is reduced by making the abutment member abut against the needle as the pressure sensor is mounted on the joint to communicate the pressure sensor with the air-conditioning duct.
In one embodiment, a joint is arranged on the air conditioner pipeline, an adapter is connected to the joint, and the pressure sensor is connected with the joint through the adapter.
In one embodiment, the adapter is screwed or snapped into the adapter.
In one embodiment, the adaptor comprises a control part and a valve core part, the valve core part is located inside the adaptor, and the control part is connected to the valve core part and controls the valve core part to move inside the adaptor so as to communicate/isolate the pressure sensor and the air conditioning pipeline.
It can be understood that, by enabling the control part to control the valve core part to move in the adaptor so as to communicate/isolate the pressure sensor and the air conditioning pipeline, zero leakage of the pressure sensor in the process of assembling and disassembling the joint is realized.
In one embodiment, the heat pump air conditioning system comprises an indoor heat exchanger and an outdoor heat exchanger, wherein the air suction side of the compressor is connected with the outdoor heat exchanger, and the air discharge side of the compressor is connected with the indoor heat exchanger.
In one embodiment, the heat pump air conditioning system comprises a first system and a second system which operate independently, the indoor heat exchangers comprise a first system and a second system which work independently, the indoor heat exchangers comprise a first indoor heat exchanger and a second indoor heat exchanger, and the outdoor heat exchangers comprise a first outdoor heat exchanger, a second outdoor heat exchanger, a third outdoor heat exchanger and a fourth outdoor heat exchanger; the first system comprises a first outdoor heat exchanger, a second outdoor heat exchanger and a first indoor heat exchanger; the second system comprises a third outdoor heat exchanger, a fourth outdoor heat exchanger and a second indoor heat exchanger; the first outdoor heat exchanger and the second outdoor heat exchanger are connected in parallel, and the third outdoor heat exchanger and the fourth outdoor heat exchanger are connected in parallel; the first outdoor heat exchanger is connected with the first indoor heat exchanger in series, and the second outdoor heat exchanger is connected with the second indoor heat exchanger in series; the third outdoor heat exchanger is connected with the first indoor heat exchanger in series, and the fourth outdoor heat exchanger is connected with the second indoor heat exchanger in series.
Compared with the prior art, the heat pump air conditioning system provided by the utility model has the advantages that the pressure sensors are respectively arranged on the air conditioning pipeline at the exhaust port side and the suction port side of the compressor, so that the later-stage maintenance is convenient, the safety is improved, and the material cost and the labor cost are saved; through making pressure sensor detachable connect in on the air conditioner pipeline, thereby be convenient for pressure sensor's installation and dismantlement make things convenient for later stage maintenance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a pressure sensor provided in the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the pressure sensor provided by the present invention;
fig. 3 is a schematic diagram of a heat pump air conditioning system provided by the present invention;
fig. 4 is a schematic structural diagram of a first indoor heat exchanger provided by the present invention;
fig. 5 is a schematic structural diagram of a second indoor heat exchanger provided by the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 3 at A;
fig. 7 is a partially enlarged view of fig. 3 at B.
The symbols in the drawings represent the following meanings:
100. a heat pump air conditioning system; 10. a first system; 11. a first outdoor heat exchanger; 111. a second outdoor heat exchanger; 12. a first indoor heat exchanger; 121. a first circulation port; 122. a second flow port; 123. a fifth circulation port; 124. a sixth circulation port; 13. a first detection valve; 131. a second check valve; 14. a first check valve; 15. a first gas-liquid separator; 16. a first direction change valve; 17. a first fan; 18. a first dry filter; 181. a first liquid sight glass; 19. a first throttle valve; 191. a second throttle valve; 20. a second system; 21. a third outdoor heat exchanger; 211. a fourth outdoor heat exchanger; 22. a second indoor heat exchanger; 221. a third flow port; 222. a fourth flow port; 223. a seventh circulation port; 224. an eighth circulation port; 23. a third check valve; 231. a fourth check valve; 24. a second check valve; 25. a second gas-liquid separator; 26. a second directional control valve; 27. a second fan; 28. a second dry filter; 281. a second liquid sight glass; 29. a third throttle valve; 291. a fourth throttle valve; 30. a first compressor; 301. a first pressure sensor; 302. a second pressure sensor; 31. a second compressor; 311. a third pressure sensor; 312. a fourth pressure sensor; 40. an air conditioning pipeline; 41. plug inserting; 42. a cable; 43. a joint; 60. a pressure sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 7, the present invention provides a heat pump air conditioning system 100, the heat pump air conditioning system 100 is applied to a rail (subway, high-speed rail, light rail, etc.) transportation vehicle, and the heat pump air conditioning system 100 is used for refrigerating or refrigerating the interior of the carriage. In other embodiments, the heat pump air conditioning system 100 may be used in a mall, a residence, or the like.
The existing heat pump air-conditioning system heats in winter by air conditioning, when the environment temperature is low and the humidity is high, the outdoor heat exchanger freezes, and the existing heat pump air-conditioning system almost has a defrosting process. The indoor outer coil pipe temperature sensor and the cooperation of high-low pressure switch that the logical control of defrosting used commonly use, pressure switch can't real-time detection in the detector, especially on track transportation vehicles air conditioning system, often need climb up the top and overhaul, overhaul inconvenient and because need circular telegram and make the top high pressure have great danger in the maintenance in-process, pressure switch all welds on the air conditioning pipeline usually moreover, also can cause the dismouting inconvenient.
For solving the problem that current heat pump air conditioning system exists, the utility model provides a heat pump air conditioning system 100, including compressor and air conditioner pipeline 40, be provided with pressure sensor on the air conditioner pipeline 40 that is located the exhaust port side and the inspiration port side of compressor respectively, and pressure sensor detachable connects on air conditioner pipeline 40.
According to the air conditioner, the pressure sensors are respectively arranged on the air conditioner pipelines 40 positioned on the exhaust port side and the air suction port side of the compressor, and the pressure sensors can transmit signals in real time, so that later-stage maintenance is facilitated, personnel are prevented from climbing the roof, the safety is improved, and the material cost and the labor cost are saved; through making pressure sensor detachable connect in the air conditioner pipeline on to the installation and the dismantlement of the pressure sensor of being convenient for need not the flame welding, easy to assemble and later maintenance.
It should be noted that, in the existing heat pump air conditioning system, on one hand, if a high-low voltage switch is used, a maintainer needs to climb up to use a pressure gauge for maintenance during maintenance, and the system needs to be powered on during maintenance, but the top voltage is high, and the danger coefficient is large; if the high-low voltage sensor is used for replacing the high-low voltage switch, the high-low voltage switch can be observed on the detector in real time without logging on the roof in the starting state, and the set value can be changed according to actual needs. The high-low voltage switch is a preset value set in the factory, is connected to an air-conditioning pipeline, and can act when the preset value is detected; the high-low pressure sensor can detect the pressure value and transmit the detected pressure value to the controller in real time, and the set value can be changed in real time through a program in the controller. Therefore, the high-low pressure sensor is used in the heat pump air conditioning system, so that the later-stage maintenance is facilitated, the safety is improved, the use of an outdoor coil temperature sensor is also saved, and the material cost and the labor cost are saved.
Specifically, the heat pump air conditioning system 100 further includes an indoor heat exchanger and an outdoor heat exchanger, and both ends of the compressor are connected to the outdoor heat exchanger and the indoor heat exchanger, respectively. Both ends of the compressor are connected with the outdoor heat exchanger and the indoor heat exchanger through air-conditioning pipelines 40.
Further, the air conditioning pipeline 40 is provided with a joint. The pressure sensor is mounted on the air conditioning pipeline 40 through a joint and is in threaded connection with the joint.
In the existing heat pump air-conditioning system, a high-low pressure switch is connected to an air-conditioning pipeline in a welding mode, and if the high-low pressure switch fails, the refrigerant in the heat pump air-conditioning system needs to be emptied and replaced by a new high-low pressure switch, and then the refrigerant is refilled; and the high-low pressure sensor can be directly replaced by a single body, thereby greatly facilitating on-site after-sale maintenance.
In this application, compare and connect in adopting the welded mode and can lead to dismantling the difficulty, consequently through making pressure sensor and 40 detachably connected of air conditioner pipeline to the pressure sensor's of being convenient for install in dismantling, make things convenient for later stage maintenance.
Optionally, the pressure sensor is threaded with the air conditioning duct 40; of course, in other embodiments, the pressure sensor may be connected to the air conditioning pipeline 40 in other detachable connection manners such as a snap connection, which is not limited herein.
Further, a valve needle is arranged in the joint, and a butting piece is arranged in the pressure sensor and butts against the valve needle along with the fact that the pressure sensor is installed on the joint so as to communicate the pressure sensor with the air-conditioning pipeline 40.
When the pressure sensor is mounted on the joint, the abutting piece abuts against the valve needle, the pressure sensor is communicated with the air-conditioning pipeline 40, and the pressure sensor works normally to detect the pressure of the refrigerant in the air-conditioning pipeline 40; when the pressure sensor is detached from the joint, the abutment is disengaged from the needle, and the air-conditioning duct 40 is internally closed, thereby preventing leakage during the detachment of the pressure sensor.
Further, in one embodiment, an adapter may be connected to the connector, and the pressure sensor may be connected to the connector through the adapter.
Optionally, the adapter is screwed or snapped with the adaptor, which is not limited herein.
Further, the adaptor includes a control portion and a valve core portion, the valve core portion is located inside the adaptor, and the control portion is connected to the valve core portion and controls the valve core portion to move inside the adaptor so as to communicate/isolate the pressure sensor and the air conditioning pipeline 40.
It should be noted that the control portion can control the valve core portion to move up and down to open the flow channel inside the air-conditioning pipeline 40 or close the flow channel inside the air-conditioning pipeline 40, so that no refrigerant leaks from the air-conditioning pipeline 40 in the whole process of assembling and disassembling the pressure sensor, and zero leakage of the pressure sensor in the process of assembling and disassembling the joint is realized.
As shown in fig. 1, in an embodiment, one end of the pressure sensor close to the air conditioning pipeline 40 is connected with the air conditioning pipeline 40 by a joint on the air conditioning pipeline 40 in a threaded manner, and one end of the pressure sensor far from the air conditioning pipeline 40 is provided with an opposite plug 41, and is oppositely plugged and electrified with an external plug by the opposite plug 41, so that the installation of the pressure sensor on the air conditioning pipeline 40 is completed.
In another embodiment, as shown in fig. 2, one end of the pressure sensor close to the air-conditioning pipeline 40 is screwed with the air-conditioning pipeline 40 through a joint on the air-conditioning pipeline 40, one end of the pressure sensor far from the air-conditioning pipeline 40 is provided with a cable 42, and the cable 42 is an internal cable 42 of the pressure sensor and is electrified with an external wiring through the cable 42, so that the installation of the pressure sensor on the air-conditioning pipeline 40 is completed.
Of course, the installation manner of the pressure sensor on the air-conditioning pipeline 40 is not limited to the above two manners, as long as the pressure sensor can be easily installed and removed on the air-conditioning pipeline 40, and the installation manner is not limited herein.
It should be noted that, in the present embodiment, since the existing high-low pressure switch is replaced by the pressure sensor, the pressure state of the exhaust port and the suction port of the compressor is detected by the pressure sensor, so that it can be determined whether the heat pump air conditioning system 100 needs defrosting, and whether the heat pump air conditioning system 100 is in a failure state. Because of this, the heat pump air conditioning system 100 may also not need to be provided with an outdoor coil temperature sensor, and to a certain extent, the material cost is also saved by adopting a pressure sensor to replace a high-low pressure switch.
As shown in fig. 3, the heat pump air conditioning system 100 includes a first system 10 and a second system 20 that operate independently of each other, the indoor heat exchangers including a first indoor heat exchanger 12 and a second indoor heat exchanger 22, and the outdoor heat exchangers including a first outdoor heat exchanger 11, a second outdoor heat exchanger 111, a third outdoor heat exchanger 21, and a fourth outdoor heat exchanger 211; the first system 10 includes a first outdoor heat exchanger 11, a second outdoor heat exchanger 111, and a first indoor heat exchanger 12; the second system 20 comprises a third outdoor heat exchanger 21, a fourth outdoor heat exchanger 211 and a second indoor heat exchanger 22; the first outdoor heat exchanger 11 and the second outdoor heat exchanger 111 are connected in parallel, and the third outdoor heat exchanger 21 and the fourth outdoor heat exchanger 211 are connected in parallel; the first outdoor heat exchanger 11 is connected in series with the first indoor heat exchanger 12, and the second outdoor heat exchanger 111 is connected in series with the second indoor heat exchanger 22; the third outdoor heat exchanger 21 is connected in series with the first indoor heat exchanger 12, and the fourth outdoor heat exchanger 211 is connected in series with the second indoor heat exchanger 22.
The compressor includes first compressor 30 and second compressor 31, and the suction port of first compressor 30 is equipped with first pressure sensor 301, and the gas vent of first compressor 30 is equipped with second pressure sensor 302, and the suction port of second compressor 31 is equipped with third pressure sensor 311, and the gas vent of second compressor 31 is equipped with fourth pressure sensor 312.
The heat pump air conditioning system 100 further includes a first fan 17 and a second fan 27. The first outdoor heat exchanger 11 and the third outdoor heat exchanger 21 correspond to one first fan 17, and the second outdoor heat exchanger 111 and the fourth outdoor heat exchanger 211 correspond to one second fan 27.
As shown in fig. 4 and 5, the first indoor heat exchanger 12 includes a first flow port 121 and a second flow port 122, the first flow port 121 is connected to the first outdoor heat exchanger 11, the second flow port 122 is communicated with the first flow port 121, the second indoor heat exchanger 22 includes a third flow port 221 and a fourth flow port 222, the fourth flow port 222 is connected to the second outdoor heat exchanger 111, the third flow port 221 is communicated with the fourth flow port 222, and the second flow port 122 and the third flow port 221 are commonly connected to the suction port of the first compressor 30; the first indoor heat exchanger 12 includes a fifth port 123 and a sixth port 124, the fifth port 123 is connected to the third outdoor heat exchanger 21, the sixth port 124 is communicated with the fifth port 123, the second indoor heat exchanger 22 includes a seventh port 223 and an eighth port 224, the eighth port 224 is connected to the fourth outdoor heat exchanger 211, the seventh port 223 is communicated with the eighth port 224, and the sixth port 124 and the seventh port 223 are commonly connected to the exhaust port of the second compressor 31; the circuits in which the first and second ports 121 and 122 are located are not communicated with the circuits in which the fifth and sixth ports 123 and 124 are located, so that the first and second systems 10 and 20 operate independently of each other.
As shown in fig. 6 and 7, the first system 10 further includes a first check valve 13, a second check valve 131, and a first check valve 14, the first check valve 13 is disposed between the first pressure sensor 301 and the suction port of the first compressor 30, an inlet of the first check valve 14 is connected to the discharge port of the first compressor 30, an outlet of the first check valve 14 is connected to the second pressure sensor 302, and the second pressure sensor 302 is connected between the second check valve 131 and the first check valve 14; the second system 20 further includes a third check valve 23, a fourth check valve 231, and a second check valve 24, the third check valve 23 is disposed between the third pressure sensor 311 and the suction port of the second compressor 31, an inlet of the second check valve 24 is connected to the discharge port of the second compressor 31, an outlet of the second check valve 24 is connected to the fourth pressure sensor 312, and the fourth pressure sensor 312 is connected between the fourth check valve 231 and the second check valve 24.
It should be noted that the first detection valve 13, the second detection valve 131, the third detection valve 23 and the fourth detection valve 231 are respectively connected to the vicinities of the first pressure sensor 301, the second pressure sensor 302, the third pressure sensor 311 and the fourth pressure sensor 312, the first pressure sensor 301, the second pressure sensor 302, the third pressure sensor 311 and the fourth pressure sensor 312 detect the pressure value of the refrigerant in the air-conditioning pipeline 40, the first detection valve 13, the second detection valve 131, the third detection valve 23 and the fourth detection valve 231 similarly detect the pressure value of the refrigerant in the air-conditioning pipeline 40, and the pressure value detected by the detection valves and the pressure value detected by the pressure sensors are calibrated, so that whether the pressure sensors are faulty or not can be determined.
Further, the first system 10 includes a first gas-liquid separator 15 and a first direction change valve 16. The first gas-liquid separator 15 is connected between the suction port of the first compressor 30 and the S port of the first switching valve 16, the D port of the first switching valve 16 is connected to the second check valve 131, the E port of the first switching valve 16 is connected to the second flow port 122 and the third flow port 221, respectively, and the C port of the first switching valve 16 is connected to the first outdoor heat exchanger 11 and the second outdoor heat exchanger 111, respectively; the second system 20 includes a second gas-liquid separator 25 and a second direction change valve 26, the second gas-liquid separator 25 is connected between the suction port of the second compressor 31 and the S port of the second direction change valve 26, the D port of the second direction change valve 26 is connected to the fourth check valve 231, the E port of the second direction change valve 26 is connected to the sixth flow port 124 and the seventh flow port 223, respectively, and the C port of the second direction change valve 26 is connected to the third outdoor heat exchanger 21 and the fourth outdoor heat exchanger 211, respectively.
Preferably, the first direction-changing valve 16 and the second direction-changing valve 26 both adopt a variable frequency electromagnetic four-way valve. When the conventional reversing valve generally adopts a fixed-frequency four-way reversing valve and the reheating pump air-conditioning system 100 performs switching work of cooling and heating, the situation that the action cannot be in place and the high-pressure protection fault is reported due to the fact that the starting frequency and the running frequency of the variable-frequency compressor are low, the pressure difference between high pressure and low pressure is small, and the gap between a sliding block and a shell in the fixed-frequency electromagnetic four-way valve is large. In order to solve this problem, the first direction changing valve 16 and the second direction changing valve 26 in this embodiment both use a variable frequency electromagnetic four-way valve, so that the gap between the slider of the four-way valve and the housing can be reduced, and even a small pressure difference can be applied to the valve without being locked.
Further, the first system 10 includes a first dry filter 18 and a first sight glass 181, the first dry filter 18 is connected between the first circulation port 121 and the first outdoor heat exchanger 11, and the first sight glass 181 is connected between the fourth circulation port 222 and the second outdoor heat exchanger 111; the second system 20 includes a second dry filter 28 and a second sight glass 281, the second dry filter 28 is connected between the eighth port 224 and the fourth outdoor heat exchanger 211, and the second sight glass 281 is connected between the fifth port 123 and the third outdoor heat exchanger 21.
The first system 10 includes a first throttle valve 19 and a second throttle valve 191, the first throttle valve 19 is connected between the first dry filter 18 and the first circulation port 121, and the second throttle valve 191 is connected between the first sight glass 181 and the fourth circulation port 222;
further, the second system 20 includes a third throttle valve 29 and a fourth throttle valve 291, the third throttle valve 29 is connected between the fifth flow port 123 and the second sight glass 281, and the fourth throttle valve 291 is connected between the eighth flow port 224 and the second dry filter 28.
It should be noted that, in the conventional heat pump air conditioning system 100, the evaporators are usually disposed at both sides of the heat pump air conditioning unit with air supplied at both ends, and the conventional two throttle valves disposed at the middle of the heat pump air conditioning system 100 may cause the situation that the throttled evaporator is too long away from the evaporators to cause flash evaporation in the course, which causes the refrigeration capacity to be attenuated. Therefore, in order to solve the problem, the heat pump air conditioning system 100 provided by the invention is provided with 4 throttle valves, so that the throttle valves can be arranged close to the evaporator, the situation that flash evaporation occurs in the course due to too long distance from the evaporator is avoided, and the throttle valves are far away from the condenser, therefore, on one hand, the heat can be further radiated in the liquid pipe course after the condenser is condensed, and the supercooling degree is increased, on the other hand, because the heat pipes are heat pipes, heat insulation cotton does not need to be wrapped, so that the usage amount of the heat insulation cotton is reduced, and the material cost is reduced. In the present embodiment, the first throttle valve 19 is disposed adjacent to the first indoor heat exchanger 12, the second throttle valve 191 is disposed adjacent to the second indoor heat exchanger 22, the third throttle valve 29 is disposed adjacent to the third outdoor heat exchanger 21, and the fourth throttle valve 291 is disposed adjacent to the fourth outdoor heat exchanger 211.
Alternatively, the first throttle 19 and the second throttle 191 may be electronic expansion valves or thermal expansion valves, which are not limited herein.
The heat pump air conditioning system 100 provided by the utility model has the advantages that the air conditioning pipelines 40 at the exhaust port side and the suction port side of the compressor are respectively provided with the pressure sensors, so that the later-stage maintenance is convenient, the safety is improved, and the material cost and the labor cost are saved; through making pressure sensor detachable connect in the air conditioner pipeline on to the pressure sensor's of being convenient for installation and dismantlement make things convenient for later stage maintenance.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The heat pump air conditioning system is characterized by comprising a compressor and an air conditioning pipeline (40), wherein the air conditioning pipeline (40) is provided with a pressure sensor on the exhaust port side and the air suction port side of the compressor, and the pressure sensors are detachably connected to the air conditioning pipeline (40).
2. The heat pump air conditioning system according to claim 1, wherein the air conditioning pipeline (40) is provided with a joint, and one end of the pressure sensor close to the air conditioning pipeline (40) is in threaded connection with the joint.
3. The heat pump air conditioning system according to claim 1, wherein a joint is provided on the air conditioning pipeline (40), one end of the pressure sensor close to the air conditioning pipeline (40) is in threaded connection with the joint, one end of the pressure sensor far away from the air conditioning pipeline (40) is provided with an opposite plug (41), and the opposite plug (41) is used for opposite plug-in electricity with an external plug.
4. The heat pump air conditioning system according to claim 1, wherein a joint is provided on the air conditioning pipeline (40), one end of the pressure sensor close to the air conditioning pipeline (40) is connected with the joint in a threaded manner, one end of the pressure sensor far away from the air conditioning pipeline (40) is provided with a cable (42), and the cable (42) is used for connecting and electrifying.
5. The heat pump air conditioning system of claim 2, wherein a valve needle is disposed within the fitting, and an abutment is disposed within the pressure sensor, the abutment abutting against the valve needle as the pressure sensor is mounted on the fitting to communicate the pressure sensor with the air conditioning duct (40).
6. The heat pump air conditioning system according to claim 1, wherein a joint is provided on the air conditioning pipeline (40), an adapter is connected to the joint, and the pressure sensor is connected to the joint through the adapter.
7. The heat pump air conditioning system of claim 6, wherein the adapter is threaded or snapped onto the adapter.
8. The heat pump air conditioning system according to claim 6, wherein the adaptor includes a control portion and a valve core portion, the valve core portion is located inside the adaptor, and the control portion is connected to the valve core portion and controls the valve core portion to move inside the adaptor so as to communicate/isolate the pressure sensor and the air conditioning pipeline (40).
9. The heat pump air conditioning system of claim 6, wherein the heat pump air conditioning system comprises an indoor heat exchanger and an outdoor heat exchanger, and two ends of the compressor are respectively connected with the outdoor heat exchanger and the indoor heat exchanger.
10. The heat pump air conditioning system according to claim 9, characterized in that it comprises a first system (10) and a second system (20) operating independently of each other, said indoor heat exchangers comprising a first indoor heat exchanger (12) and a second indoor heat exchanger (22), said outdoor heat exchangers comprising a first outdoor heat exchanger (11), a second outdoor heat exchanger (111), a third outdoor heat exchanger (21) and a fourth outdoor heat exchanger (211);
the first system (10) comprises a first outdoor heat exchanger (11), a second outdoor heat exchanger (111) and a first indoor heat exchanger (12);
the second system (20) comprises a third outdoor heat exchanger (21), a fourth outdoor heat exchanger (211) and a second indoor heat exchanger (22);
the first outdoor heat exchanger (11) and the second outdoor heat exchanger (111) are connected in parallel, and the third outdoor heat exchanger (21) and the fourth outdoor heat exchanger (211) are connected in parallel;
the first outdoor heat exchanger (11) is connected with the first indoor heat exchanger (12) in series, and the second outdoor heat exchanger (111) is connected with the second indoor heat exchanger (22) in series;
the third outdoor heat exchanger (21) is connected in series with the first indoor heat exchanger (12), and the fourth outdoor heat exchanger (211) is connected in series with the second indoor heat exchanger (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123436167.7U CN217383159U (en) | 2021-12-29 | 2021-12-29 | Heat pump air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123436167.7U CN217383159U (en) | 2021-12-29 | 2021-12-29 | Heat pump air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217383159U true CN217383159U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123436167.7U Active CN217383159U (en) | 2021-12-29 | 2021-12-29 | Heat pump air conditioning system |
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| Country | Link |
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| CN (1) | CN217383159U (en) |
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2021
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