Anti-blocking oil pipeline structure and heat pump system

Abstract

The utility model discloses an oil blockage prevention pipeline structure and a heat pump system, and relates to the technical field of refrigerant pipeline oil blockage prevention, a refrigerant pipe is arranged to enable a throttling component to communicate with a refrigerant circulation loop, so that a refrigerant can flow to the throttling component along the refrigerant pipe, the refrigerant pipe communicates with an oil guide pipe, and a filter part is arranged in the refrigerant pipe; the filtering part is located in the pipeline between the oil guide pipe and the throttling part and is adjacent to the oil guide pipe, so that a refrigerant flows through the filtering part when flowing to the throttling part, and when the heat pump system is started to run under the conditions of low environment temperature and low water temperature, the filtering part can filter floccules carried by the refrigerant and decelerate the refrigerant, so that the refrigerant is prevented from flowing into the throttling part. According to the Bernoulli equation principle, after the flow speed of the refrigerant is decreased, the pressure of the refrigerant can be increased, so that the refrigerant can extrude floccules into the oil guide pipe, the floccule lubricating oil can be prevented from blocking the refrigerant pipe, the floccule lubricating oil can also be prevented from flowing to the throttling component, and the oil blockage phenomenon can be prevented.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerant pipeline anti-oil blockage, and particularly relates to an anti-blocking oil pipeline structure and a heat pump system. Background Art

[0002] Currently, as an efficient and energy-saving hot water supply method, heat pump systems are gradually becoming the mainstream in the market. In particular, heat pump systems using R290 (propane) as the refrigerant have attracted much attention due to their good environmental friendliness. However, the R290 refrigerant has the potential risks of flammability and explosiveness. Therefore, special safety measures need to be taken in the design and application, and usually large-displacement compressors are used to reduce the refrigerant usage to meet the requirements of relevant regulations.

[0003] However, when the heat pump system starts and operates under low ambient temperature and low water temperature conditions, due to the operation of the heat pump system with a large-displacement compressor and a small amount of R290 refrigerant, and the viscosity of the system lubricating oil increases significantly at low temperatures and forms flocs, the flocculent lubricating oil is prone to oil blockage when flowing through the throttling component (such as an electronic expansion valve). This not only affects the normal operation of the throttling component, but also may lead to insufficient refrigerant reflux on the low-pressure side and difficulty in establishing pressure on the high-pressure side, thereby affecting the normal operation and efficiency of the entire heat pump system. Utility Model Content

[0004] The embodiments of the present application provide an anti-blocking oil pipeline structure and a heat pump system, which can solve the technical problem that the refrigerant is prone to oil blockage when flowing through the throttling component when the heat pump system starts and operates under low ambient temperature and low water temperature conditions.

[0005] In a first aspect, the embodiments of the present application provide an anti-blocking oil pipeline structure, which includes a throttling component, a refrigerant pipe, an oil guide pipe, and a filter element. The refrigerant pipe is communicated with the throttling component to guide the refrigerant to flow towards the throttling component. The oil guide pipe is communicated with the refrigerant pipe. The filter element is arranged inside the refrigerant pipe and in the pipeline between the oil guide pipe and the throttling component, and the filter element is arranged adjacent to the oil guide pipe.

[0006] In some embodiments, the axis line of the oil guide pipe is inclined with respect to the axis line of the refrigerant pipe.

[0007] In some embodiments, the oil guide pipe is inclined towards the direction where the throttling component is located.

[0008] In some embodiments, the filter element extends obliquely with respect to the axis of the refrigerant pipe.

[0009] In some embodiments, the oblique extension direction of the filter element is parallel to the axis of the oil guide pipe.

[0010] In some of these embodiments, the filter element has a filtering surface, and the filtering surface is connected to the inner wall surface of the oil guiding pipe.

[0011] In some of these embodiments, the refrigerant pipe includes a first pipe section and a second pipe section. The first end of the first pipe section is used to communicate with a refrigerant circulation loop. The filter element is arranged in the first pipe section, and the oil guiding pipe communicates with the first pipe section. The first end of the second pipe section communicates with the second end of the first pipe section, and the second pipe section is arranged at an angle with the first pipe section. The second end of the second pipe section communicates with the throttling component.

[0012] In some of these embodiments, the anti-blocking oil pipeline structure includes two of the refrigerant pipes. The two refrigerant pipes are respectively communicated with two interfaces of the throttling component. An oil guiding pipe is communicated with each refrigerant pipe, and a filter element is arranged in each refrigerant pipe.

[0013] In some of these embodiments, the axis of the oil guiding pipe is horizontally arranged.

[0014] In a second aspect, an embodiment of the present application provides a heat pump system, which is characterized by including the anti-blocking oil pipeline structure, a four-way valve, a compressor, a heat exchange water tank, and an outdoor heat exchanger as described above. The four-way valve has a first interface, a second interface, a third interface, and a fourth interface. The exhaust interface of the compressor is communicated with the first interface, the intake port of the compressor is communicated with the third interface, the heat exchange water tank is communicated with the second interface, the heat exchange water tank is also communicated with the throttling component through one of the refrigerant pipes, the outdoor heat exchanger is communicated with the throttling component through another refrigerant pipe, and the outdoor heat exchanger is communicated with the fourth interface.

[0015] Based on the anti-blocking oil pipeline structure and the heat pump system of the embodiments of the present application, at least the following beneficial effects are achieved:

[0016] By arranging the refrigerant pipe to communicate the throttling component with the refrigerant circulation loop, the refrigerant can flow along the refrigerant pipe to the throttling component. An oil guiding pipe is communicated with the refrigerant pipe, and a filter element is arranged inside the refrigerant pipe. The filter element is located in the pipe between the oil guiding pipe and the throttling component, and the filter element is arranged adjacent to the oil guiding pipe, so that the refrigerant will flow through the filter element when flowing to the throttling component. When the heat pump system starts and operates under low ambient temperature and low water temperature conditions, the filter element can filter the flocs carried by the refrigerant and decelerate the refrigerant. According to the Bernoulli equation principle, when the flow rate of the refrigerant becomes smaller, the pressure of the refrigerant will become larger, so that the refrigerant can squeeze the flocs into the oil guiding pipe, and thus the flocs will stay in the oil guiding pipe, which can prevent the refrigerant pipe from being blocked by the floc-containing lubricating oil and also prevent the floc-containing lubricating oil from flowing to the throttling component, and further prevent the occurrence of oil blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of an anti-blocking oil pipeline structure provided by an embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of a heat pump system provided by an embodiment of the present application;

[0020] Description of the reference numerals:

[0021] 100, heat pump system; 10, refrigerant pipe; 101, first pipe section; 102, second pipe section; 20, oil guiding pipe; 30, filtering element; 301, filtering surface; 40, heat exchange water tank; 50, throttling component; 60, outdoor heat exchanger; 70, compressor; 80, four-way valve; 801, first interface; 802, second interface; 803, third interface; 804, fourth interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Please refer to Figure 1 , an anti-blocking oil pipeline structure provided by an embodiment of the present application. The anti-blocking oil pipeline structure can be arranged in the refrigerant circulation loop to prevent oil blockage in the refrigerant circulation loop. The anti-blocking oil pipeline structure can include a throttling component 50, a refrigerant pipe 10, an oil guiding pipe 20 and a filtering element 30. The throttling component 50 can be connected to the refrigerant circulation loop through the refrigerant pipe 10.

[0024] Optionally, the refrigerant in the refrigerant circulation loop can flow along the refrigerant pipe 10 to the throttling component 50. The oil guiding pipe 20 can be connected to the refrigerant pipe 10. The filtering element 30 can be arranged inside the refrigerant pipe 10, and the filtering element 30 is located in the pipeline between the oil guiding pipe 20 and the throttling component 50, so that the refrigerant can flow through the oil guiding pipe 20, the filtering element 30 and the throttling component 50 in sequence. The filtering element 30 is also arranged adjacent to the oil guiding pipe 20.

[0025] When the flocculent lubricating oil carried by the refrigerant flows through the filter element 30, the filter element 30 can filter the flocculent lubricating oil and decelerate the refrigerant, so that the flocculent lubricating oil is filtered at the connection between the guide oil pipe 20 and the refrigerant pipe 10. According to the principle of Bernoulli's equation, when the flow rate of the refrigerant becomes smaller, the pressure of the refrigerant will increase. As a result, the refrigerant can squeeze the flocculent lubricating oil into the guide oil pipe 20, so that the flocculent lubricating oil will stay in the guide oil pipe 20, which can prevent the flocculent lubricating oil from blocking the refrigerant pipe 10 and also prevent the flocculent lubricating oil from flowing to the throttling component 50, thereby preventing the occurrence of oil blockage.

[0026] Therefore, when the heat pump system 100 starts to operate under low ambient temperature and low water temperature conditions, the anti-blocking oil pipeline structure can prevent the heat pump system 100 from having an oil blockage phenomenon.

[0027] Please refer to Figure 1 , in some embodiments, the axis line of the guide oil pipe 20 can be inclined with respect to the axis line of the refrigerant pipe 10.

[0028] Optionally, the guide oil pipe 20 is a straight circular pipe, and one end of the guide oil pipe 20 is connected to the refrigerant pipe 10. The part of the refrigerant pipe 10 connected to the guide oil pipe 20 is also a straight circular pipe, and the axis line of the guide oil pipe 20 is inclined with respect to the axis line of the refrigerant pipe 10. It can also be said that the extending direction of the guide oil pipe 20 is inclined with respect to the extending direction of the refrigerant pipe 10. When the refrigerant squeezes the flocculent lubricating oil into the guide oil pipe 20, the flocculent lubricating oil can enter the guide oil pipe 20 along the inclined surface of the guide oil pipe 20. Compared with the case where the axis line of the guide oil pipe 20 is perpendicular to the axis line of the refrigerant pipe 10, the flocculent lubricating oil can be more easily squeezed into the guide oil pipe 20 along the inclined surface.

[0029] Optionally, the guide oil pipe 20 is inclined towards the direction where the throttling component 50 is located. Thus, when the refrigerant flows along the refrigerant pipe 10 towards the throttling component 50, the inclined direction of the guide oil pipe 20 is exactly towards the flow direction of the refrigerant, so that after the filter element 30 filters the flocculent lubricating oil, the refrigerant can squeeze the flocculent lubricating oil into the guide oil pipe 20 along the flow direction, and the flocculent lubricating oil can be more easily squeezed into the guide oil pipe 20.

[0030] Please refer to Figure 1 , in some embodiments, the filter element 30 can extend obliquely with respect to the axis of the refrigerant pipe 10.

[0031] Optionally, the filter 30 can be a filter net, and the filter 30 can be arranged to extend obliquely relative to the axis of the refrigerant pipe 10, such that the area of the filter 30 is larger than the cross-sectional area of the refrigerant pipe 10. Thus, when the refrigerant flows through the filter 30, the flow area of the refrigerant will become larger. With the same refrigerant flow rate, the flow velocity of the refrigerant will become smaller. Therefore, arranging the filter 30 obliquely relative to the axis of the refrigerant pipe 10 can further reduce the flow velocity of the refrigerant flowing through the filter 30, so that the pressure of the refrigerant will further increase, and more flocculent lubricating oil can be extruded into the oil guide pipe 20.

[0032] Please refer to Figure 1 , in some embodiments, the oblique extension direction of the filter 30 can be arranged parallel to the axis of the oil guide pipe 20.

[0033] Optionally, the filter 30 can be arranged to be inclined in the same direction as the oil guide pipe 20, and the oblique extension direction of the filter 30 can be arranged parallel to the axis of the oil guide pipe 20. When the filter 30 filters out the flocculent lubricating oil, the flocculent lubricating oil can flow along the filter 30 towards the oil guide pipe 20, which can further facilitate the entry of the flocculent lubricating oil into the oil guide pipe 20.

[0034] Please refer to Figure 1 , in some embodiments, the filter 30 can have a filter surface 301, and the filter surface 301 can be connected to the inner wall surface of the oil guide pipe 20.

[0035] Optionally, the filter surface 301 of the filter 30 is an arc surface, and the filter surface 301 can be connected to the inner wall surface of the oil guide pipe 20, such that the filter surface 301 and the inner wall surface of the oil guide pipe 20 can have a smooth transition, thereby reducing the resistance of the flocculent lubricating oil flowing from the filter surface 301 into the oil guide pipe 20, that is, the flocculent lubricating oil can smoothly flow into the interior of the oil guide pipe 20 along the filter surface 301 and the inner wall surface of the oil guide pipe 20.

[0036] Please refer to Figure 1 , in some embodiments, the refrigerant pipe 10 can include a first pipe segment 101 and a second pipe segment 102 that are connected to each other.

[0037] Optionally, the first pipe section 101 has a first end and a second end which are oppositely arranged. The first end of the first pipe section 101 can be communicated with the refrigerant circulation loop. The filter element 30 can be arranged inside the first pipe section 101, and the oil guide pipe 20 is also communicated with the first pipe section 101. The second pipe section 102 also has a first end and a second end which are oppositely arranged. The first end of the second pipe section 102 can be communicated with the second end of the first pipe section 101, and the second pipe section 102 can be arranged at an angle with the first pipe section 101. The second end of the second pipe section 102 can be communicated with the throttling component 50. The refrigerant can flow through the first pipe section 101, the second pipe section 102, and the throttling component 50 in sequence. And the flocculent lubricating oil carried by the refrigerant can be filtered by the filter element 30 in the first pipe section 101. The flocculent lubricating oil will also be squeezed into the oil guide pipe 20, which can prevent the flocculent lubricating oil from flowing into the second pipe section 102.

[0038] It should be noted that the first pipe section 101 is generally arranged horizontally, while the second pipe section 102 is arranged vertically. If the filter element 30 is arranged in the second pipe section 102 and the oil guide pipe 20 is communicated with the second pipe section 102, the flocculent lubricating oil filtered by the filter element 30 may flow back due to its own gravity and accumulate at the connection of the first pipe section 101 and the second pipe section 102, thus causing an oil blockage phenomenon. By arranging the filter element 30 in the first pipe section 101, the flocculent lubricating oil can be filtered in the first pipe section 101, which can prevent the flocculent lubricating oil from accumulating at the connection of the first pipe section 101 and the second pipe section 102.

[0039] Optionally, the axis of the oil guide pipe 20 is arranged horizontally, that is, the oil guide pipe 20 extends along the horizontal direction, so that the refrigerant can squeeze the flocculent lubricating oil into the oil guide pipe 20 along the horizontal direction. Thus, the influence of gravity on the flow of the flocculent lubricating oil is reduced, the resistance of the flocculent lubricating oil flowing into the oil guide pipe 20 can be reduced, and the flocculent lubricating oil will not flow out of the oil guide pipe 20 due to the action of gravity.

[0040] Please refer to Figure 1 , in some embodiments, the anti-blocking oil pipeline structure can include two refrigerant pipes 10. The two refrigerant pipes 10 can be respectively communicated with two interfaces of the throttling component 50. An oil guide pipe 20 is communicated with each refrigerant pipe 10, and a filter element 30 is arranged inside each refrigerant pipe 10. The two refrigerant pipes 10 can communicate the throttling component 50 with the refrigerant circulation loop.

[0041] Optionally, the two refrigerant pipes 10 are respectively defined as the first refrigerant pipe 10 and the second refrigerant pipe 10. When the refrigerant in the refrigerant circulation loop flows from the first refrigerant pipe 10 to the throttling component 50 and then from the throttling component 50 to the second refrigerant pipe 10, the filter element 30 in the first refrigerant pipe 10 can filter the flocculent lubricating oil, and the refrigerant squeezes the filtered flocculent lubricating oil into the oil guide pipe 20 on the first refrigerant pipe 10, which can prevent the occurrence of oil blockage.

[0042] When the refrigerant flows in the reverse direction in the refrigerant circulation loop, that is, when the refrigerant flows from the second refrigerant pipe 10 to the throttling component 50 and then from the throttling component 50 to the first refrigerant pipe 10, similarly, the filter element 30 in the second refrigerant pipe 10 and the oil guide pipe 20 on the second refrigerant pipe 10 can prevent the occurrence of oil blockage, and the lubricating oil remaining in the oil guide pipe 20 on the first refrigerant pipe 10 will be carried away by the refrigerant, so as to continue to complete the refrigerant circulation, enabling the lubricating oil to continue to be used in the refrigerant circulation loop.

[0043] Therefore, when the refrigerant flows in both forward and reverse directions in the refrigerant circulation loop, the anti-blocking oil pipeline structure can play a role in preventing oil blockage.

[0044] Please refer to Figure 1 and Figure 2 , a heat pump system 100 provided by an embodiment of the present application. Using the heat pump system 100 to produce hot water is an efficient and energy-saving hot water supply method. The heat pump system 100 can include an anti-blocking oil pipeline structure, a four-way valve 80, a compressor 70, a heat exchange water tank 40, and an outdoor heat exchanger 60.

[0045] Optionally, the four-way valve 80 can have a first interface 801, a second interface 802, a third interface 803, and a fourth interface 804. The compressor 70 has an exhaust interface and an intake interface, and the exhaust interface of the compressor 70 can be connected to the first interface 801 of the four-way valve 80, the intake interface of the compressor 70 can be connected to the third interface 803 of the four-way valve 80, the heat exchange water tank 40 can be connected to the second interface 802 of the four-way valve 80, the heat exchange water tank 40 can also be connected to the throttling component 50 through a refrigerant pipe 10, the outdoor heat exchanger 60 can be connected to the throttling component 50 through another refrigerant pipe 10, and the outdoor heat exchanger 60 can be connected to the fourth interface 804, so that the compressor 70, the heat exchange water tank 40, the throttling component 50, and the outdoor heat exchanger 60 can be connected in sequence and form a refrigerant circulation loop. The heat pump system 100 has a hot water production working mode and a defrosting working mode.

[0046] Similarly, for the convenience of description, the refrigerant pipe 10 connected to the heat exchange water tank 40 is defined as the first refrigerant pipe 10, and the refrigerant pipe 10 connected to the outdoor heat exchanger 60 is defined as the second refrigerant pipe 10.

[0047] When the heat pump system 100 starts the hot water production working mode under low ambient temperature and low water temperature conditions, the first interface 801 and the second interface 802 of the four-way valve 80 are connected, and the third interface 803 and the fourth interface 804 of the four-way valve 80 are connected. At this time, the refrigerant can be compressed into a high-temperature and high-pressure gaseous refrigerant in the compressor 70, and the refrigerant can flow to the heat exchange water tank 40 through the first interface 801 and the second interface 802 of the four-way valve 80. After heating the water in the heat exchange water tank 40, the high-temperature and high-pressure gaseous refrigerant can be condensed into a high-temperature and high-pressure liquid refrigerant. The liquid refrigerant carries flocculent lubricating oil and flows along the first refrigerant pipe 10 to the throttling component 50. The filter 30 and the oil guide pipe 20 on the first refrigerant pipe 10 can prevent the flocculent lubricating oil from flowing to the throttling component 50 and can also prevent the occurrence of oil blockage. After the liquid refrigerant passes through the throttling component 50 and undergoes throttling and pressure reduction, it can become a medium-temperature and low-pressure liquid refrigerant. The liquid refrigerant then passes through the outdoor heat exchanger 60 and can be evaporated and heat-exchanged into a low-temperature and low-pressure gaseous refrigerant. Finally, the low-temperature and low-pressure gaseous refrigerant can enter the compressor 70 from the intake interface of the compressor 70 through the third interface 803 and the fourth interface 804 of the four-way valve 80. In this way, the refrigerant can circulate continuously to heat the heat exchange water tank 40.

[0048] When the heat pump system 100 is in the defrosting working mode, the four-way valve 80 is commutated so that the first interface 801 and the fourth interface 804 are connected, and the second interface 802 and the third interface 803 are connected. The high-temperature and high-pressure gaseous refrigerant coming out of the compressor 70 flows to the outdoor heat exchanger 60 through the first interface 801 and the fourth interface 804 of the four-way valve 80. After heat exchange and defrosting in the outdoor heat exchanger 60, the high-temperature and high-pressure gaseous refrigerant becomes a medium-temperature and high-pressure liquid refrigerant. The liquid refrigerant carries flocculent lubricating oil and flows along the second refrigerant pipe 10 to the throttling component 50. Similarly, the filter 30 and the oil guide pipe 20 on the second refrigerant pipe 10 can also prevent the flocculent lubricating oil from flowing to the throttling component 50 and can also prevent the occurrence of oil blockage. After the liquid refrigerant passes through the throttling component 50 and undergoes throttling and pressure reduction, it can become a low-temperature and low-pressure liquid refrigerant. Then the liquid refrigerant flows to the heat exchange water tank 40 and, after evaporative heat exchange in the heat exchange water tank 40, becomes a low-temperature and low-pressure gaseous refrigerant. Finally, the low-temperature and low-pressure gaseous refrigerant enters the compressor 70 through the second interface 802 and the third interface 803 of the four-way valve 80, thus realizing the circulation of the refrigerant.

[0049] When the heat pump system 100 switches from the hot water production working mode to the defrosting working mode, the four-way valve 80 will perform corresponding commutation operations so that the refrigerant can flow in the reverse direction. As a result, the lubricating oil remaining in the oil guide pipe 20 on the first refrigerant pipe 10 will be carried away by the refrigerant flowing in the reverse direction, enabling the lubricating oil to continue to play a lubricating role in the heat pump system 100 and preventing the heat pump system 100 from having a risk of oil shortage.

[0050] Similarly, when the heat pump system 100 stops defrosting and switches from the defrosting operation mode to the hot water heating operation mode, after the four-way valve 80 performs a corresponding commutation operation, the lubricating oil in the oil guide pipe 20 remaining on the second refrigerant pipe 10 is also carried away by the refrigerant, which can also prevent the heat pump system 100 from having a risk of oil shortage.

[0051] In the attached drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0052] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An anti-blocking oil pipeline structure, characterized in that: include: Throttle components; a refrigerant pipe, connected to the throttling component to guide the refrigerant to flow toward the throttling component; An oil guide pipe, connected to the refrigerant pipe; as well as The filter element is arranged inside the refrigerant pipe and is located in the pipeline between the oil guide pipe and the throttling component, and the filter element is arranged adjacent to the oil guide pipe.

2. The anti-blocking oil pipeline structure according to claim 1, characterized in that: The axis center line of the oil guide pipe and the axis center line of the refrigerant pipe are arranged obliquely.

3. The anti-blocking oil pipeline structure according to claim 2 is characterized in that: The oil guide pipe is arranged to be inclined toward the direction where the throttling component is located.

4. The anti-blocking oil pipeline structure according to claim 1, characterized in that: The filter element is arranged to extend obliquely relative to the axis of the refrigerant pipe.

5. The anti-blocking oil pipeline structure according to claim 4, characterized in that: The inclined extension direction of the filter element is parallel to the axis of the oil guide pipe.

6. The anti-blocking oil pipeline structure according to claim 5, characterized in that: The filter element has a filter surface, and the filter surface is connected to the inner wall surface of the oil guide pipe.

7. The anti-blocking oil pipeline structure according to claim 1, characterized in that: The refrigerant pipe comprises: A first pipe section, wherein a first end of the first pipe section is used to communicate with a refrigerant circulation circuit, the filter element is disposed on the first pipe section, and the oil guide pipe is communicated with the first pipe section; A second pipe segment, wherein the first end of the second pipe segment is connected to the second end of the first pipe segment, and the second pipe segment and the first pipe segment are arranged at an angle, and the second end of the second pipe segment is connected to the throttling component.

8. The anti-blocking oil pipeline structure according to claim 1, characterized in that: The anti-blocking oil pipeline structure includes two refrigerant pipes, which are respectively connected to the two interfaces of the throttling component, each of the refrigerant pipes is connected to the oil guide pipe, and each of the refrigerant pipes is provided with the filter.

9. The anti-blocking oil pipeline structure according to claim 1, characterized in that: The axis of the oil guide pipe is arranged horizontally.

10. A heat pump system, characterized in that: include: The anti-blocking oil pipeline structure according to any one of claims 1 to 9; A four-way valve, the four-way valve having a first interface, a second interface, a third interface and a fourth interface; A compressor, wherein the exhaust port of the compressor is in communication with the first port, and the air inlet of the compressor is in communication with the third port; A heat exchange water tank, the heat exchange water tank is connected to the second interface, and the heat exchange water tank is also connected to the throttling component through one of the refrigerant pipes; An outdoor heat exchanger, wherein the outdoor heat exchanger is connected to the throttling component through another refrigerant pipe, and the outdoor heat exchanger is connected to the fourth interface.

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