Air conditioner
By introducing a recycling system into the air conditioner, foreign objects are recovered during the replacement process using cleaning pipes and pressure equalization pipes. This solves the problem of foreign objects entering the compressor during air conditioner replacement, thus protecting the compressor and ensuring the stable operation of the refrigerant system.
Patent Information
- Application Number
- CN202520077444.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-13
AI Technical Summary
During the air conditioner replacement process, foreign objects can easily enter the refrigerant lines and damage the compressor.
Design an air conditioner that includes a refrigerant system and a recovery system. The recovery system includes a recovery device connected to a gas-liquid separator, and recovers foreign matter through a cleaning pipe and a pressure equalization pipe to prevent foreign matter from entering the compressor.
It effectively recovers foreign objects, prevents compressor damage, ensures stable operation of the refrigerant system, and avoids space occupation and refrigerant reduction.
Smart Images
Figure CN223896155U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air conditioning technical field, specifically, relate to a kind of air conditioners. BACKGROUND
[0002] At present, the air conditioner on market, in actual application, usually needs to update indoor unit, compressor and the like components according to user demand, especially the multi-connected air conditioner with multiple indoor units.
[0003] In the air conditioner updating process, dust, oil stains and the like foreign matter are easily introduced into the refrigerant pipeline, causing the foreign matter to enter the compressor when the subsequent air conditioner is started, resulting in damage to the compressor. INVENTION CONTENTS
[0004] The problem solved by the utility model is to prevent the foreign matter introduced during the updating of the air conditioner components from damaging the compressor.
[0005] To solve the above problems, the utility model provides an air conditioner, which can recycle and process the foreign matter introduced during the updating of components, to prevent the foreign matter from entering the compressor.
[0006] The embodiment of the utility model provides an air conditioner, comprising a refrigerant system and a recycling system, wherein the refrigerant system comprises a refrigerant pipeline, a compressor and a gas-liquid separator arranged on the refrigerant pipeline;
[0007] The recycling system comprises a recycling device, which is arranged below the gas-liquid separator and connected to the gas-liquid separator, and is used to recycle the foreign matter separated from the refrigerant by the gas-liquid separator.
[0008] The air conditioner provided by the embodiment of the utility model has the recycling device of the recycling system connected to the gas-liquid separator, which can recycle the foreign matter separated from the refrigerant by the gas-liquid separator and avoid occupying too much space.
[0009] In an optional embodiment, the recycling system further comprises a cleaning pipe, one end of which is connected to the bottom of the gas-liquid separator, and the other end is connected to the recycling device.
[0010] In actual application, the dust, oil stains and the like foreign matter in the gas-liquid separator are deposited at the bottom of the gas-liquid separator under the action of gravity, and the cleaning pipe guides the foreign matter to the recycling device for recycling.
[0011] In an optional embodiment, the recycling device has a containing cavity for containing foreign matter, and one end of the cleaning pipe, which is away from the gas-liquid separator, is connected to the bottom of the containing cavity.
[0012] The washing pipe can guide the foreign matter separated in the gas-liquid separator to the accommodating cavity of the recovery device for storage, so as to realize recovery of the foreign matter.
[0013] In an optional embodiment, the washing pipe is provided with a control valve for controlling opening and closing of the washing pipe.
[0014] The opening and closing of the washing pipe is controlled by the control valve, the control valve is opened when the foreign matter needs to be recovered, so that the foreign matter in the gas-liquid separator can smoothly enter the recovery device; and the control valve is closed after the recovery is completed, so as to ensure stable operation of the refrigerant system.
[0015] In an optional embodiment, the recovery system further comprises an equalizing pipe, one end of the equalizing pipe is connected to the top of the gas-liquid separator, and the other end is connected to the recovery device.
[0016] The equalizing pipe connects the recovery device and the inside of the gas-liquid separator, ensures pressure balance between the two, so that the foreign matter in the gas-liquid separator can smoothly enter the recovery device. Moreover, when the recovery is completed and the control valve is closed, due to the arrangement of the equalizing pipe, negative pressure will not be formed in the recovery container, and refrigeration oil will not be sucked from the main circuit.
[0017] In an optional embodiment, the recovery device has an accommodating cavity for accommodating foreign matter, and the end of the equalizing pipe away from the gas-liquid separator is connected to the top of the accommodating cavity.
[0018] The equalizing pipe is connected to the top of the accommodating cavity, so that the foreign matter in the accommodating cavity will not return to the gas-liquid separator through the equalizing pipe.
[0019] In an optional embodiment, the inner diameter of the equalizing pipe is greater than or equal to 1 mm.
[0020] By setting the inner diameter of the equalizing pipe to be greater than or equal to 1 mm, a better equalizing effect can be obtained, and the washing pipe can be prevented from being blocked.
[0021] In an optional embodiment, the recovery device and the gas-liquid separator are integrally formed.
[0022] The recovery device and the gas-liquid separator are integrally formed, which can improve the structural stability and reduce the space occupation.
[0023] In an optional embodiment, the refrigerant system further comprises a four-way valve, an outdoor condenser and an indoor evaporator arranged on the refrigerant pipeline.
[0024] In an optional embodiment, the number of indoor evaporators is multiple, and multiple indoor evaporators are arranged in parallel on the refrigerant pipeline.
[0025] The refrigerant system includes multiple indoor evaporators, meaning the air conditioner is a multi-split air conditioner. After replacing the indoor unit or compressor, it can recycle any foreign objects introduced during the replacement process, preventing them from entering the compressor. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present utility model;
[0027] Figure 2 This is a schematic diagram of the connection structure between the gas-liquid separator in the recovery system and the refrigerant system.
[0028] Explanation of reference numerals in the attached figures:
[0029] 100 - Air conditioner; 110 - Refrigerant system; 111 - Refrigerant piping; 112 - Compressor; 113 - Gas-liquid separator; 114 - Four-way valve; 115 - Outdoor condenser; 116 - Indoor evaporator; 120 - Recovery system; 121 - Recovery device; 1211 - Receptacle; 122 - Cleaning pipe; 123 - Control valve; 124 - Pressure equalization pipe. Detailed Implementation
[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0031] Please see Figure 1 , Figure 1 The diagram shown is a structural schematic of the air conditioner 100 provided in this embodiment.
[0032] The air conditioner 100 provided in this embodiment is actually a multi-split type, which has one outdoor unit and multiple indoor units. The air conditioner 100 includes a refrigerant system 110, which includes a refrigerant pipeline 111 and a compressor 112, a gas-liquid separator 113, a four-way valve 114, an outdoor condenser 115, and multiple indoor evaporators 116 installed on the refrigerant pipeline 111. The multiple indoor evaporators 116 are connected in parallel on the refrigerant pipeline 111.
[0033] In practical applications, air conditioner 100 usually needs to replace multiple components, including compressor 112 and indoor unit. During the disassembly and assembly process, it is inevitable that foreign objects such as dust and oil will enter the refrigerant pipe 111. As a result, when the air conditioner 100 is running normally after the replacement, the foreign objects in the refrigerant pipe 111 will flow into the compressor 112, causing damage to the compressor 112.
[0034] To address this issue, the air conditioner 100 provided in this embodiment further includes a recycling system 120. The recycling system 120 includes a recycling device 121, which is located below and connected to the gas-liquid separator 113. The recycling device 121 is used to recycle foreign matter separated from the refrigerant by the gas-liquid separator 113.
[0035] Specifically, after the air conditioner 100 completes the replacement of components such as the compressor 112 or indoor unit, the air conditioner 100 can first run in cooling mode for a period of time. The refrigerant output by the compressor 112 flows sequentially through the outdoor condenser 115 and multiple indoor evaporators 116 before entering the gas-liquid separator 113. During this process, the refrigerant carries foreign objects from the refrigerant pipe 111 into the gas-liquid separator 113. After the foreign objects and refrigerant are separated in the gas-liquid separator 113, the refrigerant flows out of the gas-liquid separator 113 and flows back to the compressor 112 for the next cycle, while the foreign objects flow out of the gas-liquid separator 113 and flow into the recovery device 121, thus realizing the recovery of foreign objects.
[0036] In this embodiment, since the recycling device 121 of the recycling system 120 is connected to the gas-liquid separator 113 to form an integral structure, it can avoid occupying too much space in the outdoor unit and prevent the size of the outdoor unit from being expanded.
[0037] Please refer to the following: Figure 2 , Figure 2 The diagram shows the connection structure between the recovery system 120 and the gas-liquid separator 113.
[0038] Regarding the connection structure between the recovery device 121 and the gas-liquid separator 113, in this embodiment, the recovery system 120 further includes a cleaning pipe 122, one end of which is connected to the bottom of the gas-liquid separator 113, and the other end is connected to the recovery device 121.
[0039] Since the end of the cleaning pipe 122 furthest from the recovery device 121 is connected to the bottom of the gas-liquid separator 113, in practical applications, foreign matter that has been separated from the refrigerant by gravity in the gas-liquid separator 113 accumulates in the bottom space of the gas-liquid separator 113. As the refrigerant continues to flow into the gas-liquid separator 113, it is subjected to pressure, and the foreign matter accumulated at the bottom flows into the cleaning pipe 122 and flows into the recovery device 121 along the cleaning pipe 122, thereby completing the recovery of foreign matter.
[0040] In this embodiment, the recycling device 121 has a receiving cavity 1211 for accommodating foreign objects, and the end of the washing pipe 122 away from the gas-liquid separator 113 is connected to the bottom of the receiving cavity 1211. In practical applications, when recycling foreign objects, the foreign objects at the bottom of the gas-liquid separator 113 flow into the receiving cavity 1211 of the recycling device 121 through the washing pipe 122. The receiving cavity 1211 stores the inflowing foreign objects, thereby realizing the recycling of foreign objects.
[0041] It is understandable that, since the recovery device 121 is located below the gas-liquid separator 113, i.e. there is a height difference between the two, foreign objects entering the cleaning pipe 122 can quickly flow into the recovery device 121 under the combined action of pressure and their own gravity, thus avoiding the foreign objects from staying in the cleaning pipe 122 for a long time and achieving ideal recovery efficiency.
[0042] To effectively control the foreign matter recovery process, in this embodiment, a control valve 123 is installed on the cleaning pipe 122. The control valve 123 is used to control the opening and closing of the cleaning pipe 122. After the component replacement is completed, the control valve 123 is opened, allowing the recovery device 121 to connect with the gas-liquid separator 113 through the cleaning pipe 122. The air conditioner 100 operates in cooling mode for a period of time, allowing the foreign matter in the refrigerant pipe 111 that enters the gas-liquid separator 113 with the gaseous refrigerant to flow quickly into the recovery device 121 through the open cleaning pipe 122 after being separated from the gaseous refrigerant by gravity.
[0043] After the foreign matter is recovered, the system can actually run in cooling mode for a period of time and then stop. At this time, the control valve 123 is closed so that the recovery device 121 is not connected to the gas-liquid separator 113, thus avoiding the impact of the recovery system 120 on the refrigerant system 110 and ensuring that the refrigerant system 110 can operate normally and obtain good heating or cooling effects.
[0044] Preferably, in this embodiment, the control valve 123 is a solenoid valve. Furthermore, since the density of foreign matter flowing in the cleaning pipe 122 is high, a large-diameter valve body is not required, and the control valve 123 can be a small-diameter model to save costs.
[0045] Considering that in practical applications, as foreign matter continuously flows into the receiving cavity 1211 of the recovery device 121 through the washing pipe 122, the pressure inside the receiving cavity 1211 will continuously increase, which will hinder the continuous inflow of foreign matter. To solve this problem, the recovery system 120 provided in this embodiment also includes a pressure equalization pipe 124, one end of which is connected to the top of the gas-liquid separator 113, and the other end is connected to the recovery device 121.
[0046] Since the equalizing pipe 124 connects the gas-liquid separator 113 to the receiving cavity 1211 of the recovery device 121, in practical applications, when foreign matter in the gas-liquid separator 113 continuously flows into the receiving cavity 1211 of the recovery device 121 through the cleaning pipe 122, the pressure in the receiving cavity 1211 tends to increase, and the gas in the space above the receiving cavity 1211 will flow into the gas-liquid separator 113 in a timely manner through the equalizing pipe 124, while the gas in the gas-liquid separator 113 will flow out in real time and flow to the compressor 112. Therefore, the pressure in the receiving cavity 1211 and the gas-liquid separator 113 can be balanced, thereby ensuring that foreign matter can flow smoothly and continuously into the receiving cavity 1211.
[0047] Furthermore, after the foreign matter recovery is completed and the control valve 123 is closed, since the accommodating cavity 1211 is always connected to the gas-liquid separator 113 through the equalizing pipe 124, the accommodating cavity 1211 will not form a negative pressure, nor will it draw in refrigeration oil from the main circuit. In this embodiment, the end of the equalizing pipe 124 away from the gas-liquid separator 113 is connected to the top of the accommodating cavity 1211. Foreign matter flowing into the accommodating cavity 1211 accumulates at the bottom of the accommodating cavity 1211, while the opening of the equalizing pipe 124 is at the top of the accommodating cavity 1211, ensuring that foreign matter in the accommodating cavity 1211 will not return to the gas-liquid separator 113 through the equalizing pipe 124.
[0048] In this embodiment, the air conditioner 100 has a refrigerant pipeline length of 100m and a power of 10HP. After component replacement, it is set to run in cooling mode for 20 minutes to complete foreign matter recovery. With a main gas pipe diameter of 22.2mm and a main liquid pipe diameter of 9.5mm, assuming a foreign matter content of 5%, the residual foreign matter volume in the main gas and main liquid pipes is approximately 320ml. Considering occasional foreign matter accumulation, the remaining foreign matter volume is estimated at 1.5 times, resulting in 480ml. The receiving cavity 1211 is designed to occupy approximately 60% of the total volume, therefore, the volume of receiving cavity 1211 is 800ml. In this embodiment, taking the gas-liquid separator 113 with an inner diameter of 180mm as an example, the recovery device 121 can be installed by increasing the height of the gas-liquid separator 113 by 32mm.
[0049] In order to ensure that the expected amount of residual foreign matter of 480ml flows into the recycling device 121 during the recycling process, the movement time of the residual foreign matter from the gas-liquid separator 113 into the recycling device 121 can be calculated by the following formula, with the inner diameter of the cleaning tube 122 being 0.8mm or more.
[0050]
[0051] Where t refers to the flow time [sec] of the residual foreign matter from the gas-liquid separator 113 to the recovery device 121, D refers to the inner diameter [mm] of the gas-liquid separator 113, h refers to the height of the residual foreign matter in the gas-liquid separator 113 [mm], and g is the acceleration due to gravity [mm / s²]. 2 ], C d The guide ring coefficient is 0.6, and S refers to the cross-sectional area of the cleaning tube 122 [mm²]. 2 ].
[0052] To prevent clogging of the cleaning tube 122, in this embodiment, the inner diameter of the equalizing tube 124 is preferably greater than or equal to 1 mm. Furthermore, the diameter of the control valve 123 can be the same as the inner diameter of the cleaning tube 122, and can be 0.8 mm or greater.
[0053] In addition, to improve structural stability and further reduce space occupation, in this embodiment, the recovery device 121 and the gas-liquid separator 113 are integrally formed. In another embodiment, depending on the actual application conditions, the recovery device 121 and the gas-liquid separator 113 may also be connected in other ways.
[0054] In summary, the air conditioner 100 provided in this embodiment is equipped with a recovery system 120 that can recover foreign matter in the refrigerant system 110, preventing damage to the compressor 112 and avoiding a reduction in refrigerant in the refrigerant system 110, thus ensuring that the cooling and heating capacity of the air conditioner 100 is not affected. Furthermore, the structure of the refrigerant pipeline 111 of the air conditioner 100 remains unchanged, and no additional control valve 123 is required on the refrigerant pipeline 111, preventing an increase in pressure drop during cooling or heating operation, which could lead to a decrease in suction pressure and ensure stable cooling and heating capacity. Additionally, the connection between the recovery device 121 and the gas-liquid separator 113 reduces space occupancy.
[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. An air conditioner, characterized in that, It includes a refrigerant system (110) and a recovery system (120). The refrigerant system (110) includes a refrigerant pipeline (111) and a compressor (112) and a gas-liquid separator (113) installed on the refrigerant pipeline (111). The recovery system (120) includes a recovery device (121) located below and connected to the gas-liquid separator (113), the recovery device (121) being used to recover foreign matter separated from the refrigerant by the gas-liquid separator (113).
2. The air conditioner according to claim 1, characterized in that, The recycling system (120) also includes a washing pipe (122), one end of which is connected to the bottom of the gas-liquid separator (113), and the other end is connected to the recycling device (121).
3. The air conditioner according to claim 2, characterized in that, The recycling device (121) has a receiving cavity (1211) for containing foreign matter, and the end of the washing tube (122) away from the gas-liquid separator (113) is connected to the bottom of the receiving cavity (1211).
4. The air conditioner according to claim 3, characterized in that, A control valve (123) is provided on the cleaning tube (122), and the control valve (123) is used to control the opening and closing of the cleaning tube (122).
5. The air conditioner according to claim 1, characterized in that, The recovery system (120) also includes a pressure equalization pipe (124), one end of which is connected to the top of the gas-liquid separator (113), and the other end is connected to the recovery device (121).
6. The air conditioner according to claim 5, characterized in that, The recovery device (121) has a receiving cavity (1211) for containing foreign matter, and the end of the equalizing pipe (124) away from the gas-liquid separator (113) is connected to the top of the receiving cavity (1211).
7. The air conditioner according to claim 5, characterized in that, The inner diameter of the equalizing tube (124) is greater than or equal to 1 mm.
8. The air conditioner according to claim 1, characterized in that, The recovery device (121) is integrally formed with the gas-liquid separator (113).
9. The air conditioner according to claim 1, characterized in that, The refrigerant system (110) also includes a four-way valve (114), an outdoor condenser (115), and an indoor evaporator (116) installed on the refrigerant pipeline (111).
10. The air conditioner according to claim 9, characterized in that, The number of indoor evaporators (116) is multiple, and the multiple indoor evaporators (116) are connected in parallel on the refrigerant pipeline (111).