CN115450881A

CN115450881A - Refrigerating machine oil additive supplementing device and method and compression device

Info

Publication number: CN115450881A
Application number: CN202211146138.3A
Authority: CN
Inventors: 詹翔智; 徐嘉; 史正良; 郭小青; 王银亮; 黄毓华
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-09

Abstract

The application relates to the technical field of refrigerator oil addition, in particular to a refrigerator oil additive supplementing device and method and a compression device. The refrigerator oil additive supplementing device comprises a shell, a fluid supplementing pipe and a control system, wherein a containing cavity is formed in the shell and is used for pre-filling additive supplementing fluid; the liquid supplementing pipe is positioned below the shell, one end of the liquid supplementing pipe is communicated with the accommodating cavity, and the other end of the liquid supplementing pipe is communicated with an oil pool of the compressor; and the control system is used for controlling additive replenishing liquid in the accommodating cavity to enter the oil pool through the liquid replenishing pipe. The refrigerating machine oil additive replenishing device contains various easily-consumed refrigerating machine oil additives, and can be slowly replenished into the refrigerating machine oil in the compressor according to a specified mode, so that the refrigerating machine oil in the compressor can always keep proper additive concentration and good performance, and the reliability of the compressor is improved.

Description

Refrigerating machine oil additive supplementing device and method and compression device

Technical Field

The application relates to the technical field of refrigerating machine oil addition, in particular to a refrigerating machine oil additive supplementing device and method and a compression device.

Background

In recent years, rapid development of refrigeration technology has also raised higher and higher requirements for the performance of refrigerating machine oil. However, the pure lubricating base oil can not completely meet the performance requirements, and corresponding additives are required to be added to improve the oil product performance. The additive is the essence of modern lubricating oil, and the correct and reasonable selection and addition can improve the physical and chemical properties of the lubricating oil, endow new special performance or strengthen certain performance originally possessed by the lubricating oil, so that the lubricating oil can meet the increasingly severe working condition requirements. The refrigerating machine oil used by us at present is composed of base oil and additives.

The additives generally have an optimum working concentration. It is not suitable that the additive is too much or too little in the refrigerator oil. However, the additive is a consumable and the concentration in the refrigerator oil is not constant. During the operation of the compressor, the additives in the refrigerating machine oil are gradually consumed, and the additives are excessively consumed, so that the performance of the refrigerating machine oil is reduced, and even the refrigerating machine oil is degraded, so that the refrigerating machine oil corrodes the parts of the compressor, or the parts of the compressor are abraded.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: during the operation of the compressor, the additives in the refrigerating machine oil are gradually consumed, and the additives are excessively consumed, so that the performance of the refrigerating machine oil is reduced, and even the refrigerating machine oil is degraded, so that the refrigerating machine oil corrodes the parts of the compressor, or the parts of the compressor are abraded.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a refrigerator oil additive replenishing device.

A refrigerator oil additive replenishing device according to an embodiment of the present application includes:

the device comprises a shell, a liquid container and a liquid outlet pipe, wherein a containing cavity is formed in the shell and is used for pre-filling additive replenishing liquid;

the liquid supplementing pipe is positioned below the shell, one end of the liquid supplementing pipe is communicated with the accommodating cavity, and the other end of the liquid supplementing pipe is communicated with an oil pool of the compressor; and

and the control system is used for controlling additive replenishing liquid in the accommodating cavity to enter the oil pool through the liquid replenishing pipe.

Further, the refrigerator oil additive supplementing device further comprises a pressure balancing air path, and the pressure balancing air path is used for communicating the accommodating cavity with the inner cavity of the compressor.

Further, the control system includes:

the valve is arranged on the liquid supplementing pipe and is used for controlling the flow rate of the additive supplementing liquid in the liquid supplementing pipe;

the sensor is used for acquiring judgment information;

the control device receives the judgment information and generates a control command according to the judgment information; and

and the actuator is used for executing the control command to drive the valve to act.

Further, the control system includes a capillary segment disposed within the fluid replacement tubing.

In order to achieve the above object, according to a second aspect of the present invention, there is provided a compression apparatus.

A compression device according to an embodiment of the present application, comprising:

a compressor; and

the first aspect of the application provides a refrigerator oil additive replenishing device.

Further, the housing is disposed outside of the compressor or in an internal cavity of the compressor.

In order to achieve the above object, according to a third aspect of the present invention, there is provided a refrigerator oil additive replenishment method implemented by using the refrigerator oil additive replenishment device provided in the first aspect of the present application.

The refrigerator oil additive supplementing method according to the embodiment of the application comprises the following steps:

and controlling the flow of the pre-filled additive supplement liquid to the oil pool of the compressor based on the judgment information so as to adjust the concentration of the refrigerating machine oil additive in the compressor.

Further, the judgment information is the working state of the compressor;

when the working state of the compressor is a starting state, the liquid supplementing pipe is in a conducting state;

and when the working state of the compressor is a closed state, the liquid supplementing pipe is in a cut-off state.

Further, the judgment information is the working condition of the compressor, and the time of the liquid supplementing pipe in a conducting state in unit time is adjusted according to the working condition of the compressor.

Further, the judgment information is the temperature inside the compressor;

when the temperature in the compressor is higher than the preset temperature, controlling the liquid supplementing pipe to be in a conducting state;

and when the temperature in the compressor is lower than the preset temperature, controlling the liquid supplementing pipe to be in a cut-off state.

Further, the judgment information is the running time of the compressor; and when the compressor runs for a preset time, the liquid supplementing pipe supplements the preset volume of additive supplementing liquid to the compressor.

The embodiment of the invention has the following beneficial effects: the refrigerating machine oil additive replenishing device contains various easily-consumed refrigerating machine oil additives, and can be slowly replenished into the refrigerating machine oil in the compressor according to a specified mode, so that the refrigerating machine oil in the compressor can always keep proper additive concentration and good performance, and the reliability of the compressor is improved.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram of a first refrigerator oil additive replenishment device according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a first compression device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a second refrigerator oil additive replenishment device according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a second compression device provided in an embodiment of the present application;

FIG. 5 is a schematic view of a circulation system provided in accordance with an embodiment of the present disclosure; and

fig. 6 is a schematic view of another circulation system provided in an embodiment of the present application.

Wherein:

100. a refrigerator oil additive replenishing device; 101. a housing; 102. a liquid supplementing pipe; 103. an accommodating chamber; 104. a pressure balancing gas circuit; 105. a valve; 106. a sensor; 107. a control device; 108. an actuator; 109. a capillary segment;

200. a compressor; 201. an oil sump;

300. an evaporator;

400. an expansion mechanism;

500. a condenser;

600. a refrigerator oil;

700. additive make-up fluid.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings are intended to cover non-exclusive inclusions, such that a system, product or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

As shown in fig. 1 to 4, the present embodiment provides a refrigerator oil additive replenishing device 100 for replenishing a compressor 200 with a refrigerator oil additive, wherein the refrigerator oil additive replenishing device 100 and the compressor 200 constitute a compression device. The bottom of the compressor 200 is formed with an oil sump 201 for receiving the refrigerator oil 600.

The refrigerator oil additive supplementing device 100 comprises a shell 101, a fluid supplementing pipe 102 and a control system, wherein a containing cavity 103 is formed in the shell 101, and the containing cavity 103 is used for pre-filling additive supplementing fluid 700; the liquid supplementing pipe 102 is positioned below the shell 101, one end of the liquid supplementing pipe 102 is communicated with the accommodating cavity 103, the other end of the liquid supplementing pipe 102 is used for being communicated with the oil pool 201 of the compressor 200, and the trend of the liquid supplementing pipe 102 is integrally along the vertical direction, so that additive supplementing liquid in the accommodating cavity 103 can automatically flow into the oil pool 201 of the compressor 200 under the action of gravity; the control system is used for controlling additive replenishing liquid in the accommodating cavity 103 to enter the oil pool 201 through the replenishing pipe 102.

In some embodiments, the refrigerator oil additive replenishment device 100 further comprises a pressure equalization gas path 104, wherein the pressure equalization gas path 104 is used for communicating the accommodating cavity 103 with the internal cavity of the compressor 200. Because in the working process, the compressor 200 is in the circulation system, in the working process of the compressor 200, the pressure in the circulation system is obviously higher than the atmospheric pressure, and is influenced by the pressure in the internal cavity of the compressor 200, the additive replenishing liquid in the accommodating cavity 103 is difficult to flow into the oil pool 201 through the liquid replenishing pipe 102 by self, the pressure balancing air path 104 can communicate the accommodating cavity 103 with the internal cavity of the compressor 200, and the air pressure in the accommodating cavity 103 is consistent with that in the circulation system, so that the additive replenishing liquid in the accommodating cavity 103 can smoothly flow into the oil pool 201 through the liquid replenishing pipe 102 by self.

As shown in fig. 1 and 2, in the refrigerating machine oil additive replenishing device 100, as a first alternative embodiment of the control system, the control system comprises a valve 105, a sensor 106, a control device 107 and an actuator 108, wherein the valve 105 is arranged on the replenishing pipe 102 and is used for controlling the flow rate of the additive replenishing liquid in the replenishing pipe 102; the sensor 106 is used for acquiring judgment information; the control device 107 receives the judgment information and generates a control command according to the judgment information; the actuator 108 is used for executing the control command to drive the valve 105 to act.

The refrigerating machine oil additive replenishing method during operation of the refrigerating machine oil additive replenishing device 100 in the above embodiment includes: the flow of the pre-loaded additive make-up fluid to the oil sump 201 of the compressor 200 is controlled based on the judgment information to adjust the concentration of the refrigerant oil additive in the compressor 200.

Alternatively, the judgment information in the refrigerating machine oil additive supplementing method is the working state of the compressor 200; when the working state of the compressor 200 is a starting state, controlling the liquid supplementing pipe 102 to be in a conducting state; when the working state of the compressor 200 is the off state, the liquid replenishing pipe 102 is in the off state. That is, by this replenishment method, it is possible to realize that the refrigerating machine oil additive replenishment device 100 can continue to replenish the additive replenishment liquid into the oil sump 201 of the compressor 200 when the compressor 200 is in the start state, and the refrigerating machine oil additive replenishment device 100 stops replenishing the additive replenishment liquid into the oil sump 201 of the compressor 200 when the compressor 200 is in the off state, wherein the flow rate of the additive replenishment liquid in the replenishment liquid pipe 102 in the refrigerating machine oil additive replenishment device 100 can be controlled according to the opening degree of the valve 105. The flow rate of the additive replenishment liquid in the replenishment pipe 102 may be specifically set as needed, for example, the concentration and flow rate of each additive in the additive replenishment liquid may be appropriately set according to the consumption rate of the additive per unit operating time of the compressor 200, and if necessary, the flow rate may be adjusted according to the operating condition of the compressor 200, and the flow rate may be adjusted to 0 to 5 μ L/h by controlling the opening degree of the valve 105. The content of the additive replenishing liquid pre-filled in the accommodating cavity 103 can be reasonably designed according to the service life of the compressor 200 and the flow rate, the concentration of each component of the replenishing liquid is determined according to the consumption rate of each additive, and if the flow rate is 2.5 mu L/h and the working life of a certain compressor 200 is 20000h, 50mL of the additive replenishing liquid can be pre-filled in the accommodating cavity 103 of the device. The opening and closing of the fluid replacement tube 102 and the flow rate in the fluid replacement tube 102 are controlled by the valve 105.

Optionally, the judgment information in the method for supplementing the refrigerator oil additive is the working condition of the compressor 200, and the time for which the liquid supplementing pipe 102 is in the conducting state in unit time is adjusted according to the working condition of the compressor 200. For example, under light operating conditions, the valve 105 may be opened for 10 minutes per hour, so that the solution pipe 102 is kept in a conducting state for 10 minutes per hour; in heavy working conditions, the valve 105 can be kept open continuously, so that the liquid replenishing pipe 102 is always in a conducting state.

Alternatively, the judgment information in the refrigerating machine oil additive replenishment method is the temperature inside the compressor 200; when the temperature in the compressor 200 is higher than a preset temperature, controlling the liquid supplementing pipe 102 to be in a conducting state; and when the temperature in the compressor 200 is lower than the preset temperature, controlling the liquid supplementing pipe to be in a cut-off state. The preset temperature may be specifically selected according to compressors 200 of different models, for example, the preset temperature is 60 ℃, when the temperature in the compressor 200 is higher than 60 ℃, the liquid supplement pipe 102 is controlled to be in a conducting state, and the refrigerator oil additive supplement device 100 supplements the additive supplement liquid to the oil sump 201 of the compressor 200; when the temperature in the compressor 200 is lower than 60 ℃, the liquid supplementing pipe is controlled to be in a cut-off state, and the refrigerating machine oil additive supplementing device 100 stops supplementing the additive supplementing liquid into the oil pool 201 of the compressor 200.

Alternatively, the judgment information in the refrigerating machine oil additive replenishment method is the operation time of the compressor 200; when the compressor 200 is operated for a preset time, the liquid supplement pipe 102 supplements a preset volume of the additive supplement liquid to the compressor 200, that is, the valve 105 is opened at a preset time according to the operation time of the compressor 200 to supplement a specified volume of the additive supplement liquid. The preset time and the preset volume can be reasonably selected according to the type and working condition of the compressor 200, for example, when the compressor 200 runs for 400 hours, the valve 105 is opened, and 1mL of additive replenishing liquid is added into the oil pool 201 of the compressor 200 through the liquid replenishing pipe 102.

As shown in fig. 3 and 4, in the refrigerating machine oil additive replenishing device 100, as a second alternative embodiment of the control system, the control system includes a capillary segment 109 disposed in the replenishment pipe 102. Specifically, the capillary tube section may be sleeved in the fluid infusion tube 102, so that the additive supplement fluid flowing out of the fluid infusion tube 102 necessarily flows through the capillary tube section, and the inner diameter of the capillary tube section 109 may be specifically selected according to the viscosity-temperature characteristics of the additive supplement fluid, and is usually 0.05mm to 0.5mm. Specifically, after the compressor 200 is started, the temperature rises, and the viscosity of the additive replenishment liquid 700 decreases with the rise in temperature, and the additive replenishment liquid can flow out through the capillary section 109; when the compressor 200 is turned off, the additive refill 700 will become more viscous and will not flow or will flow at a slower rate from the capillary segment 109.

As shown in fig. 5, in the compression apparatus provided in the embodiment of the present application, the housing 101 may be disposed outside the compressor 200, and the pressure balancing air path 104 may be a pipeline that communicates the internal cavity of the compressor 200 and the accommodating cavity 103. This arrangement facilitates the addition of additive replenishment liquid into the accommodating chamber 103 and facilitates maintenance and disassembly.

As shown in fig. 6, in the compression device provided in the embodiment of the present application, the shell 101 may also be disposed in the internal cavity of the compressor 200, and at this time, the pressure balancing air path 104 may be a through hole opened on the shell 101. This arrangement makes it possible to keep the additive replenishment liquid in the accommodating chamber 103 at the same temperature as the internal chamber of the compressor 200, thereby increasing the accuracy of the temperature control.

In fig. 5 and 6, the compression apparatus is in a circulation system including a compressor 200, an evaporator 300, an expansion mechanism 400, and a condenser 500 connected in this order.

[ REFRIGERATOR OIL ADDITIVE SUPPLEMENT LIQUID ]

The refrigerator oil additive replenisher liquid of the present invention contains various easily consumable additives necessary for compressor refrigerator oil, and the following components of various refrigerator oil additive replenishers. Including but not limited to:

1. the base oil may be at least one selected from mineral oils and synthetic oils. The mineral oil that can be used as the base oil component includes, but is not limited to, any of paraffinic, naphthenic, and mixed base oils. Synthetic oils that may be used as the base oil component include, but are not limited to, oxygen-containing compounds such as esters and ethers, or hydrocarbon oils such as poly-alpha-olefins and alkylbenzenes.

2. Examples of the antioxidant include phenolic antioxidants such as 2, 6-di-tert-butyl-p-cresol (BHT), 2, 6-di-tert-butyl-4-methylphenol (DBPC), 2, 6-di-tert-butyl-4-ethylphenol, and 2,2 '-methylenebis (4-methyl-6-tert-butylphenol), and amine antioxidants such as phenyl-alpha-naphthylamine and N, N' -di-phenyl-p-phenylenediamine. The content of the antioxidant is preferably 5% or more by mass of the base oil (hereinafter, the contents are all by mass based on the mass of the base oil).

3. As the anti-wear agent, phosphate, acid phosphate, phosphite and the like can be exemplified. Examples of the phosphate ester include tricresyl phosphate, triphenyl phosphate, and triphenyl thiophosphate; examples of the acid phosphate ester include monobutyl acid phosphate, dioleyl acid phosphate, and the like; examples of the phosphite ester include dibutyl phosphite and triphenyl phosphite. The content of the antiwear agent is preferably 5 to 15%.

4. Examples of the acid scavenger include glycidyl ester type epoxy compounds, glycidyl ether type epoxy compounds, oxirane compounds, and alicyclic epoxy compounds. The content of the acid catching agent is preferably 5 to 15 percent

5. Examples of the metal deactivator include benzotriazole and benzotriazole derivatives, thiadiazole and thiadiazole derivatives, and heterocyclic compounds. Examples of the benzotriazole and benzotriazole derivatives include benzotriazole, tolyltriazole, and the like; examples of the thiadiazole and the thiadiazole derivative include 2, 5-dimercapto-1, 3, 4-thiadiazole and the like. The content of the metal deactivator is preferably 0.1 to 1%.

The additive-replenishing liquid components are preferably the same base oil and additives as those of the refrigerating machine oil used in the compressor.

As shown in fig. 3 and 4, the compressing apparatus is composed of a compressor 200 and a replenishing apparatus 100. The replenishing device 100 is composed of a shell 101, a capillary section 203, a pressure balance pipe 104 and a liquid replenishing pipe 102. The composition of the pre-filled additive refill fluid 700 of the refill apparatus 100 of this embodiment is set forth in Table 1 below:

TABLE 1

Serial number	Components	Name (R)	Content/%
				1	Base oil	Polyol esters	74.8
2	Antioxidant agent	2, 6-tert-butyl-p-cresol	5
				3	Antiwear agent	Trimethylphenol phosphate ester	10
4	Acid trapping agent	Novel glycidyl decanoate	10
				5	Metal deactivator	Benzotriazole derivatives	0.2

TABLE 2

The principle of the refrigerator oil additive replenishment during operation of the refrigerator oil additive replenishment device in the above embodiment is as follows: the flowing state of the additive supplementing liquid in the capillary section is controlled according to the temperature and the viscosity-temperature performance of the additive supplementing liquid, and the purpose of controlling the flowing speed of the supplementing liquid can be achieved by changing the inner diameter of the capillary section according to the Poisbee law. Additive replenishers with higher viscosity are difficult to flow out through the capillary section at normal temperature or low temperature; at high temperatures, additive replenishers of lower viscosity can be dispensed at a specified rate along the capillary segment, and table 2 shows the viscosity of different additive replenishers at different temperatures, and the internal diameters and flow rates of different capillary segments.

The above description is merely illustrative of particular embodiments of the invention that enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A refrigerator oil additive replenishment device, comprising:

2. The refrigerator oil additive replenishment device of claim 1 further comprising a pressure equalization gas path for communicating the receiving chamber with an interior cavity of a compressor.

3. The refrigerator oil additive replenishment device of claim 1 wherein the control system comprises:

the sensor is used for acquiring judgment information;

4. The refrigerator oil additive replenishment device of claim 1 wherein the control system comprises a capillary segment disposed within the fluid replacement tube.

5. A compression device, comprising:

a compressor; and

the refrigerator oil additive replenishment device as claimed in any one of claims 1 to 4.

6. The compression device of claim 5, wherein the housing is disposed outside of the compressor or in an internal cavity of the compressor.

7. A refrigerator oil additive replenishment method implemented by the refrigerator oil additive replenishment device according to any one of claims 1 to 4, characterized by comprising:

8. The refrigerator oil additive replenishment method according to claim 7, wherein the judgment information is an operating state of the compressor;

when the working state of the compressor is the closing state, the liquid supplementing pipe is in a cut-off state.

9. The refrigerator oil additive replenishment method of claim 7,

and the judgment information is the working condition of the compressor, and the time of the liquid supplementing pipe in a conducting state in unit time is adjusted according to the working condition of the compressor.

10. The refrigerator oil additive replenishment method of claim 7, wherein the judgment information is a temperature inside the compressor;

when the temperature in the compressor is higher than a preset temperature, controlling the liquid supplementing pipe to be in a conducting state;

11. The refrigerator oil additive replenishment method of claim 7,

the judgment information is the running time of the compressor; and when the compressor runs for a preset time, the liquid supplementing pipe supplements the preset volume of additive supplementing liquid to the compressor.