CN117628749A - Knockout structure, compressor and air conditioner - Google Patents

Abstract

The invention provides a liquid dispenser structure, a compressor and an air conditioner, wherein the liquid dispenser structure comprises a liquid dispenser and a heat-sensitive control assembly; an air outlet pipe of the liquid separator is provided with an upper oil return hole and a lower oil return hole; the thermosensitive control assembly is used for sensing the temperature inside the dispenser, so that the lower oil return hole is closed by first deformation when the temperature inside the dispenser is greater than a preset value, and the lower oil return hole is opened by second deformation when the temperature inside the dispenser is less than or equal to the preset value. According to the technical scheme of the invention, the thermosensitive control assembly can realize the two different morphological changes of the first deformation and the second deformation by sensing the temperature inside the liquid dispenser, namely according to the air suction temperature matched with the air conditioning system, and control the opening and closing of the lower oil return hole so as to control the oil return height of the liquid dispenser, thereby meeting the different height requirements of the air conditioner on the oil return hole under different working conditions.

Description

Knockout structure, compressor and air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to a liquid distributor structure, a compressor and an air conditioner.

Background

As market competition becomes stronger, the smaller the two air conditioning systems are, the finer the system matching becomes. The height of the oil return hole of the liquid distributor of the compressor is more and more important. The low-temperature heating and maximum refrigerating working conditions require less refrigerating oil or refrigerant to be stored at the bottom of the liquid separator so as to exert the system capacity and meet the requirements of maximum refrigerating and low-temperature heating capacity; however, if the oil return hole is opened too low, the rated refrigeration and low-temperature intermediate refrigeration working conditions are caused, and the circulation quantity of the liquid refrigerant of the system is too large, so that the performance of the compressor is seriously affected.

That is, the low temperature heating working condition and the maximum refrigeration working condition require that the oil return hole of the liquid separator is opened to be lower, and the working conditions such as rated refrigeration, low temperature intermediate refrigeration and the like require that the oil return hole is opened to be higher, so that the air conditioner has different requirements on the height of the oil return hole of the liquid separator under different working conditions. As shown in fig. 1, a dispenser 1 'in the prior art has an air outlet pipe 2', and an oil return hole 21 'is provided on the air outlet pipe 2'. The height of the oil return hole 21 'of the liquid separator in the prior art is fixed, and the requirement of the air conditioner on different heights of the oil return hole 21' under different working conditions cannot be met.

Disclosure of Invention

Therefore, the invention provides a liquid dispenser structure, a compressor and an air conditioner, which can solve the technical problems that the height of an oil return hole of the liquid dispenser in the prior art is fixed, and the different height requirements of the air conditioner on the oil return hole under different working conditions cannot be met.

In order to solve the problems, the invention provides a liquid dispenser structure, which comprises a liquid dispenser and a thermosensitive control assembly; an air outlet pipe of the liquid separator is provided with an upper oil return hole and a lower oil return hole; the thermosensitive control assembly is used for sensing the temperature inside the dispenser, so that the lower oil return hole is closed by first deformation when the temperature inside the dispenser is greater than a preset value, and the lower oil return hole is opened by second deformation when the temperature inside the dispenser is less than or equal to the preset value.

In some embodiments, the thermal control assembly comprises a thermal ring, the thermal ring is sleeved in the air outlet pipe, and the thermal expansion coefficient of the thermal ring is larger than that of the air outlet pipe;

the heat-sensitive control assembly expands to close the lower oil return hole under the first deformation through the heat-sensitive ring, and contracts to open the lower oil return hole under the second deformation through the heat-sensitive ring.

In some embodiments, the heat sensitive ring opens or closes the lower oil return hole through an outer wall thereof.

In some embodiments, the inner wall of the air outlet pipe is provided with a step, and the air outlet pipe provides support for the lower end of the thermosensitive ring through the step.

In some embodiments, the thermally sensitive control assembly includes a first thermal expansion member and a second thermal expansion member, the first thermal expansion member having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the second thermal expansion member; both the first and second thermal expansion members are disposed within the dispenser 1; one end of the first thermal expansion piece and one end of the second thermal expansion piece are fixed, and the other ends of the first thermal expansion piece and the second thermal expansion piece are connected to form a movable end;

the heat-sensitive control assembly moves to a first position to close the lower oil return hole under the first deformation of the movable end, and moves to a second position to open the lower oil return hole under the second deformation of the movable end.

In some embodiments, the movable end opens or closes the lower oil return hole through a side wall at the lower oil return hole near or far from the air outlet pipe;

or the movable end opens or closes the lower oil return hole by moving along the central line direction of the air outlet pipe.

In some embodiments, when the movable end opens or closes the lower oil return hole through a side wall near or far from the outlet pipe at the lower oil return hole, the movable end opens or closes the lower oil return through an outer wall thereof; or the movable end is provided with a first sealing element and is used for driving the first sealing element to move so as to open or close the lower oil return hole through the first sealing element.

In some embodiments, the first thermal expansion member and the second thermal expansion member are both sheet-shaped, the first thermal expansion member and the second thermal expansion member are both stacked and arranged inside the air outlet pipe, and the second thermal expansion member is close to the side wall of the air outlet pipe at the lower oil return hole relative to the first thermal expansion member.

In some embodiments, when the movable end opens or closes the lower oil return hole by moving along the central line direction of the air outlet pipe, the movable end is connected with a second sealing member, the second sealing member is in sliding fit with the side wall of the air outlet pipe, and the movable end is used for driving the second sealing member to move so as to open or close the lower oil return hole through the second sealing member.

In some embodiments, the first and second thermal expansion members are both stacked along a spiral trajectory to form a spiral member, and cross sections of the first and second thermal expansion members at various positions on the spiral trajectory are both stacked along a center line direction of the spiral member; wherein, the spiral piece is sleeved on the air outlet pipe.

The present invention also provides a compressor which may include a dispenser arrangement as described in any one of the preceding claims.

The invention also provides an air conditioner which can comprise the compressor.

The liquid distributor structure, the compressor and the air conditioner provided by the invention have the following beneficial effects:

1. the temperature-sensitive control component can realize the first deformation and the second deformation of the two different forms by sensing the temperature inside the liquid separator, namely according to the air suction temperature matched with the air conditioning system, and control the opening and closing of the lower oil return hole so as to control the oil return height of the liquid separator, and realize the oil return of the air conditioner through the lower oil return hole under the low-temperature heating working condition and the maximum refrigeration working condition so as to reduce the oil return height; and oil is returned through the upper oil return hole under the working conditions of rated refrigeration, low-temperature intermediate refrigeration and the like, so that the purpose of improving the oil return height is achieved, and the requirements of the air conditioner on different heights of the oil return holes under different working conditions can be met.

2. When the air conditioner heats at low temperature and the maximum refrigeration operating mode, the air suction temperature of the compressor is lower, so that the internal temperature of the liquid separator is lower and smaller than or equal to a preset value, at the moment, the thermosensitive control assembly can open the lower oil return hole in a second deformation mode, the liquid separator returns oil through the lower oil return hole, the oil return height is reduced, the residual liquid storage amount in the liquid separator is small, and the system capacity is good. When the air conditioner is in working conditions such as limit refrigeration and low-temperature intermediate refrigeration, the air suction temperature of the compressor is higher, so that the internal temperature of the dispenser is higher and is larger than a preset value, at the moment, the thermosensitive control assembly can perform first deformation to close the lower oil return hole, the dispenser returns oil through the upper oil return hole, the oil return height is increased, and therefore the amount of refrigerant stored in the dispenser is large, and the energy efficiency matching effect is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a prior art dispenser;

FIG. 2a is a schematic view of the structure of the closed lower oil return hole of the thermosensitive control assembly of the dispenser of the present invention;

FIG. 2b is a schematic view of the structure of the dispenser of FIG. 2a with the thermal control assembly opening the lower oil return hole;

FIG. 3a is a schematic view of the structure of the thermosensitive control assembly of the dispenser of the present invention with the thermosensitive ring closing the lower oil return hole;

FIG. 3b is a schematic view of the thermal control assembly of the dispenser of FIG. 3a with the lower oil return opening opened by a thermal ring;

FIG. 4a is a schematic view of the structure of the thermosensitive control assembly of the dispenser of the present invention with the outer wall of the movable end closing the lower oil return hole;

FIG. 4b is a schematic view of the structure of the dispenser of FIG. 4a with the thermal control assembly opening the lower oil return hole through the outer wall of the movable end;

FIG. 4c is an enlarged schematic view at A in FIG. 4 b;

FIG. 5a is a schematic view of the structure of the heat sensitive control assembly of the dispenser of the present invention with the first seal closing the lower oil return hole;

FIG. 5b is a schematic view of the thermal control assembly of the dispenser of FIG. 5a with the first seal opening the lower gallery;

FIG. 5c is an enlarged schematic view at B in FIG. 5B;

FIG. 6a is a schematic view of the structure of the heat sensitive control assembly of the dispenser of the present invention with the second seal closing the lower oil return hole;

FIG. 6b is a schematic view of the thermal control assembly of the dispenser of FIG. 6a with the second seal opening the lower gallery.

The reference numerals are:

1. a knockout; 2. an air outlet pipe; 3. a thermal control assembly; 4. a fastener; 5. a first seal; 6. a second seal; 21. an upper oil return hole; 22. a lower oil return hole; 30. a movable end; 31. a thermosensitive ring; 32. a first thermal expansion member; 33. a second thermal expansion member.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. It should be understood, however, that the construction, proportion, and size of the drawings, in which the present invention is practiced, are all intended to be illustrative only, and not to limit the scope of the present invention, which should be defined by the appended claims. Any structural modification, proportional change or size adjustment should still fall within the scope of the disclosure without affecting the efficacy and achievement of the present invention. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

For an air conditioner, under the working conditions of low-temperature heating and maximum refrigeration, the quantity of the refrigerant oil or the refrigerant stored at the bottom of the liquid separator is required to be small, and the quantity of the refrigerant involved in circulation is enough to better exert the system capacity and meet the requirements of the maximum refrigeration and low-temperature heating capacity; in the case of refrigeration oil, the compressor discharge rate is generally high at high frequencies, and more refrigeration oil is required in the compressor, which also requires less storage of refrigeration oil in the dispenser. In the working conditions of rated refrigeration, low-temperature intermediate refrigeration and the like, if the oil return hole is opened too low, the liquid refrigerant circulation quantity of the system is too large, and the performance of the compressor is seriously affected.

The following table is system match data for my G088 compressor match 26N 3. The temperature inside the dispenser is close to the suction temperature. It can be known from the table that the maximum refrigeration requirement is very low when the oil return hole of the liquid dispenser is opened, and the air suction temperature is low at the moment; other working conditions require that the oil return hole of the liquid separator is opened higher, and the air suction temperature is higher at the moment. Therefore, the opening and closing of the oil return hole at the bottom of the liquid dispenser are controlled through the air suction temperature, and different requirements of different working conditions on liquid storage at the bottom of the liquid dispenser can be met.

Referring to fig. 2a and 2b in combination, there is provided a dispenser structure according to an embodiment of the invention comprising a dispenser 1 and a thermally sensitive control assembly 3. An upper oil return hole 21 and a lower oil return hole 22 are arranged on the air outlet pipe 2 of the liquid distributor 1, and the upper oil return hole 21 is positioned above the lower oil return hole 22. The thermal control assembly 3 is used for sensing the temperature inside the dispenser 1, so that the first deformation is generated to close the lower oil return hole 22 when the temperature inside the dispenser 1 is greater than a preset value, and the second deformation is generated to open the lower oil return hole 22 when the temperature inside the dispenser 1 is less than or equal to the preset value. Wherein the heat-sensitive control component 3 can be influenced by heating at different temperatures to perform different deformations.

What needs to be explained here is: the above-mentioned "closing the lower oil return hole 22" may refer to partially closing the lower oil return hole 22, or may refer to completely closing the lower oil return hole 22. The above-mentioned "opening the lower oil return hole 22" may refer to partially opening the lower oil return hole 22, or may refer to completely opening the lower oil return hole 22.

Fig. 2a shows a state that the thermosensitive control assembly 3 senses the internal temperature of the dispenser 1 and closes the lower oil return hole 22 when the internal temperature of the dispenser 1 is higher than a preset value. Fig. 2b shows a state in which the thermosensitive control assembly 3 senses the internal temperature of the dispenser 1 and opens the lower oil return hole 22 when the internal temperature of the dispenser 1 is less than or equal to a preset value.

In the above example, the heat-sensitive control component 3 can realize the first deformation and the second deformation by sensing the temperature inside the dispenser 1, that is, according to the air suction temperature matched with the air conditioning system, and thus control the opening and closing of the lower oil return hole 22 to control the oil return height of the dispenser 1, so as to realize the oil return of the air conditioner through the lower oil return hole 22 under the low-temperature heating working condition and the maximum refrigeration working condition, and reduce the oil return height; and oil is returned through the upper oil return hole 21 under the working conditions of rated refrigeration, low-temperature intermediate refrigeration and the like, so that the purpose of improving the oil return height is achieved, and the requirements of the air conditioner on different heights of the oil return holes under different working conditions can be met.

For the structure of the liquid separator, when the air conditioner heats at low temperature and under the working condition of maximum refrigeration, the air suction temperature of the compressor is lower, so that the internal temperature of the liquid separator 1 is lower and smaller than or equal to a preset value, at the moment, the thermosensitive control assembly 3 can open the lower oil return hole 22 in a second deformation mode, the liquid separator 1 returns oil through the lower oil return hole 22, the oil return height is reduced, the residual liquid storage amount in the liquid separator 1 is less, and the system capacity is good. When the air conditioner is in working conditions such as limit refrigeration and low-temperature intermediate refrigeration, the air suction temperature of the compressor is higher, so that the internal temperature of the dispenser 1 is higher and is larger than a preset value, at the moment, the thermosensitive control assembly 3 can be subjected to first deformation to close the lower oil return hole 22, the dispenser 1 returns oil through the upper oil return hole 21, the oil return height is increased, and therefore the amount of refrigerant stored in the dispenser 1 is large, and the energy efficiency matching effect is good.

In order to realize the function of the thermosensitive control assembly 3, the thermosensitive control assembly 3 is enabled to generate a first deformation to close the lower oil return hole 22 when sensing that the temperature inside the dispenser 1 is greater than a preset value, and generate a second deformation to open the lower oil return hole 22 when sensing that the temperature inside the dispenser 1 is less than or equal to the preset value. The foregoing thermal control assembly 3 has several different embodiments, and the different embodiments are described below.

To perform the function of the thermal control assembly 3 described above, in one example, as shown in fig. 3a and 3b, the thermal control assembly 3 may include a thermal ring 31, where the thermal ring 31 is sleeved in the outlet pipe 2, and the thermal expansion coefficient of the thermal ring 31 is greater than that of the outlet pipe 2. Wherein, the thermal control assembly 3 expands to close the lower oil return hole 22 under the first deformation through the thermal ring 31, and contracts to open the lower oil return hole 22 under the second deformation through the thermal ring 31.

In the above example, the thermal control assembly 3 uses the expansion deformation and contraction deformation of the thermal ring 31 at different temperatures to open and close the lower oil return hole 22, so that the function of the thermal control assembly 3 can be achieved.

In a specific application example, the aforementioned thermo-sensitive ring 31 may open or close the lower oil return hole 22 through its outer wall. Specifically, when the thermosensitive ring 31 expands under the first deformation, the outer wall of the thermosensitive ring 31 is attached to the inner wall of the air outlet pipe 2 at the position of the lower oil return hole 22, so as to cover the opening of the lower oil return hole 22 on the inner wall of the air outlet pipe 2, and close the lower oil return hole 22. When the thermo-sensitive ring 31 contracts under the second deformation, a gap is provided between the outer wall of the thermo-sensitive ring 31 and the inner wall of the outlet pipe 2 at the lower oil return hole 22 to open the lower oil return hole 22.

The thermal expansion coefficient of the thermosensitive ring 31 in the drawing is larger than that of the air outlet tube 2. That is, the tube diameter of the thermosensitive ring 31 is changed more greatly with temperature than the outlet tube 2. As shown in fig. 3a, when the temperature is high, the heat-sensitive ring 31 expands more than the air outlet pipe 2, the gap between the heat-sensitive ring 31 and the air outlet pipe 2 is reduced or even tightly expanded, and the lower oil return hole 22 is opened very little or even closed. As shown in fig. 3b, when the temperature is low, the heat-sensitive ring 31 is contracted more than the air outlet pipe 2, the gap between the heat-sensitive ring 31 and the air outlet pipe 2 is enlarged, and the lower oil return hole 22 is opened.

In the above example, the thermosensitive ring 31 opens or closes the lower oil return hole 22 through its own outer wall, and has a simple structure and low implementation cost.

As shown in fig. 3a and 3b, the inner wall of the air outlet pipe 2 has a step, and the air outlet pipe 2 provides support to the lower end of the heat sensitive ring 31 through the step.

In the above example, the installation of the heat-sensitive ring 31 in the outlet pipe 2 is facilitated by the step provided.

In order to implement the function of the thermal control assembly 3 described above, in another example, as shown in fig. 4a and 4b, the thermal control assembly 3 may include a first thermal expansion member 32 and a second thermal expansion member 33, the thermal expansion coefficient of the first thermal expansion member 32 being greater than the thermal expansion coefficient of the second thermal expansion member 33. Both the first thermal expansion member 32 and the second thermal expansion member 33 are provided in the dispenser 1. One ends of the first thermal expansion member 32 and the second thermal expansion member 33 are fixed, and the other ends of the first thermal expansion member 32 and the second thermal expansion member 33 are connected to form the movable end 30. Wherein, the heat sensitive control assembly 3 closes the lower oil return hole 22 by moving the movable end 30 to the first position under the first deformation, and opens the lower oil return hole 22 by moving the movable end 30 to the second position under the second deformation.

In the above example, the first thermal expansion member 32 and the second thermal expansion member 33 are different in thermal expansion coefficient, and one end of the two is fixed, and the other end of the two is connected to form the movable end 30. At different temperatures, the first thermal expansion member 32 and the second thermal expansion member 33 are deformed differently, so that the movable end 30 formed by connecting the other ends of the two members can be moved to different positions. The heat-sensitive control assembly 3 utilizes the movable end 30 to move to different positions to open and close the lower oil return hole 22, so that the function of the heat-sensitive control assembly 3 can be realized.

To achieve the aforementioned function of moving the movable end 30 to different positions to open and close the lower oil return hole 22, in one example, as shown in fig. 4a to 5c, the movable end 30 may open or close the lower oil return hole 22 by being close to or apart from the sidewall of the outlet pipe 2 at the lower oil return hole 22. In another example, as shown in fig. 6a to 6b, the movable end 30 may open or close the lower oil return hole 22 by moving in the direction of the center line of the outlet pipe 2. The different movement patterns of the movable end 30 will be described below.

When the movable end 30 opens or closes the lower oil return hole 22 through a side wall near or far from the outlet pipe 2 at the lower oil return hole 22, in one example, as shown in fig. 4a to 4c, the movable end 30 may open or close the lower oil return through an outer wall thereof. Specifically, the movable end 30 may be close to the sidewall of the outlet pipe 2 at the lower oil return hole 22 under the first deformation, and is attached to the sidewall of the outlet pipe 2 at the lower oil return hole 22 through the outer wall thereof, so as to cover the opening of the lower oil return hole 22 on the sidewall of the outlet pipe 2, so that the lower oil return hole 22 is closed. The movable end 30 is away from the sidewall of the outlet pipe 2 at the lower oil return hole 22 under the second deformation such that a gap is provided between the outer wall of the movable end 30 and the sidewall of the outlet pipe 2 at the lower oil return hole 22 to open the lower oil return hole 22.

When the movable end 30 opens or closes the lower oil return hole 22 by being close to or far from the sidewall of the outlet pipe 2 at the lower oil return hole 22, in another example, as shown in fig. 5a to 5c, the movable end 30 is provided with the first seal 5, and the movable end 30 is used to move the first seal 5 to open or close the lower oil return hole 22 by the first seal 5. Specifically, the movable end 30 may be close to the sidewall of the outlet pipe 2 at the lower oil return hole 22 under the first deformation, and is attached to the sidewall of the outlet pipe 2 at the lower oil return hole 22 by the first sealing member 5, so as to cover the opening of the lower oil return hole 22 at the sidewall of the outlet pipe 2, so that the lower oil return hole 22 is closed. The movable end 30 is away from the sidewall of the outlet pipe 2 at the lower oil return hole 22 in the second deformation with a gap between the first seal 5 and the sidewall of the outlet pipe 2 at the lower oil return hole 22 to open the lower oil return hole 22.

In a specific application example, as shown in fig. 4a to 5c, the first thermal expansion member 32 and the second thermal expansion member 33 may both be sheet-shaped, the first thermal expansion member 32 and the second thermal expansion member 33 are stacked inside the outlet pipe 2, and the second thermal expansion member 33 is close to the side wall of the outlet pipe 2 at the lower oil return hole 22 with respect to the first thermal expansion member 32.

The first thermal expansion member 32 and the second thermal expansion member 33 are laminated to form a sheet assembly, and when the temperature inside the dispenser 1 is equal to or less than a preset value, the sheet assembly is in a first bent state, and the lower oil return hole 22 is in an open state. When the internal temperature of the dispenser 1 is higher than a preset value, the sheet member is in the second bent state, and the lower oil return hole 22 is closed by the sheet member.

Wherein one end of both the first thermal expansion member 32 and the second thermal expansion member 33 may be fixed to the side wall of the outlet tube 2 by a fastener 4 such as a screw.

In the above example, by providing both the first thermal expansion member 32 and the second thermal expansion member 33 in a sheet shape and in a laminated arrangement, there is an advantage in that the structure is simple and the processing is facilitated.

When the movable end 30 opens or closes the lower oil return hole 22 by moving along the center line direction of the outlet pipe 2, as shown in fig. 6a and 6b, the movable end 30 is connected with the second sealing member 6, the second sealing member 6 is slidably matched with the side wall of the outlet pipe 2, and the movable end 30 is used for driving the second sealing member 6 to move so as to open or close the lower oil return hole 22 by the second sealing member 6.

In the above example, the movable end 30 opens or closes the lower oil return hole 22 through the second seal 6, and the effect of closing the lower oil return hole 22 is better.

Further, as shown in fig. 6a and 6b, both the first thermal expansion member 32 and the second thermal expansion member 33 are laminated along a spiral track to form the spiral member 7, and the cross sections of both the first thermal expansion member 32 and the second thermal expansion member 33 at the respective positions on the spiral track are laminated along the center line direction of the spiral member 7. Wherein, screw 7 is overlapped on outlet duct 2.

In the above example, the first thermal expansion member 32 and the second thermal expansion member 33 are stacked along the spiral track to form a spiral shape to be sleeved on the air outlet pipe 2, which is advantageous for installation; and the air outlet pipe 2 can guide the movement of the spiral piece, so that the movement precision of the movable end 30 can be improved.

In a specific application example, as shown in fig. 6a and 6b, the cross section of the first thermal expansion member 32 and the cross section of the second thermal expansion member 33 are located on the upper side of the cross section of the second thermal expansion member 33, in the cross section of each of the first thermal expansion member 32 and the second thermal expansion member 33 on the spiral track. The lower ends of both the first thermal expansion member 32 and the second thermal expansion member 33 are fixed, and the upper ends thereof form the aforementioned movable end 30.

In the above example, the thermal expansion coefficients of the first thermal expansion member 32 and the second thermal expansion member 33 are different, and at different temperatures, the deformations of the first thermal expansion member 32 and the second thermal expansion member 33 are different, and the movable end 30 formed by connecting the other ends of the first thermal expansion member 32 and the second thermal expansion member 33 can move to different positions along the center line of the outlet pipe 2, so as to drive the second sealing member 6 to open or close the lower oil return hole 22.

What needs to be explained here is: the second sealing member 6 may be annular, and the second sealing member 6 is sleeved on the air outlet pipe 2, so that the air outlet pipe 2 can guide the movement of the second sealing member 6, and the movement precision of the second sealing member 6 is improved.

When the first thermal expansion member 32 and the second thermal expansion member 33 are stacked, the second thermal expansion member 33 and the second thermal expansion member 33 may be stacked and fixed together, for example, both may be fixed by brazing or casting. The brazing method is adopted for processing, so that clear cross section between two materials can be realized, no impurity exists, and the deformation can be accurately controlled. Adopts a casting mode for processing, has low cost and high production efficiency.

The present invention also provides a compressor that may include any of the above-described knockout structures. In this example, because the compressor adopts the above-mentioned knockout structure, the temperature-sensitive control component 3 can realize the first deformation and the second deformation of the two different forms by sensing the temperature inside the knockout 1, namely according to the air suction temperature matched with the air conditioning system, and thus control the opening and closing of the lower oil return hole 22 to control the oil return height of the knockout 1, and realize that the air conditioner returns oil through the lower oil return hole 22 under the low-temperature heating working condition and the maximum refrigeration working condition, so as to reduce the oil return height; and oil is returned through the upper oil return hole 21 under the working conditions of rated refrigeration, low-temperature intermediate refrigeration and the like, so that the purpose of improving the oil return height is achieved, and the requirements of the air conditioner on different heights of the oil return holes under different working conditions can be met.

The invention also provides an air conditioner which can comprise the compressor. In this example, because the air conditioner adopts the compressor, the heat-sensitive control component 3 can realize the first deformation and the second deformation by sensing the temperature inside the liquid dispenser 1, namely, according to the matched air suction temperature of the air conditioning system, and accordingly control the opening and closing of the lower oil return hole 22 to control the oil return height of the liquid dispenser 1, so as to realize the oil return of the air conditioner through the lower oil return hole 22 under the low-temperature heating working condition and the maximum refrigeration working condition, and reduce the oil return height; and oil is returned through the upper oil return hole 21 under the working conditions of rated refrigeration, low-temperature intermediate refrigeration and the like, so that the purpose of improving the oil return height is achieved, and the requirements of the air conditioner on different heights of the oil return holes under different working conditions can be met.

Those skilled in the art will readily appreciate that the advantageous features of the various aspects described above may be freely combined and stacked without conflict.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (12)

1. A dispenser structure, characterized in that: comprises a liquid dispenser (1) and a thermosensitive control assembly (3);

an upper oil return hole (21) and a lower oil return hole (22) are formed in an air outlet pipe (2) of the liquid separator (1);

the thermosensitive control assembly (3) is used for sensing the temperature inside the dispenser (1) so as to enable the lower oil return hole (22) to be closed through first deformation when the temperature inside the dispenser (1) is larger than a preset value, and enable the lower oil return hole (22) to be opened through second deformation when the temperature inside the dispenser (1) is smaller than or equal to the preset value.

2. The dispenser structure according to claim 1, wherein:

the heat-sensitive control assembly (3) comprises a heat-sensitive ring (31), the heat-sensitive ring (31) is sleeved in the air outlet pipe (2), and the thermal expansion coefficient of the heat-sensitive ring (31) is larger than that of the air outlet pipe (2);

the heat-sensitive control assembly (3) expands to close the lower oil return hole (22) under the first deformation through the heat-sensitive ring (31), and contracts to open the lower oil return hole (22) under the second deformation through the heat-sensitive ring (31).

3. The dispenser structure according to claim 2, wherein:

the thermosensitive ring (31) opens or closes the lower oil return hole (22) through the outer wall thereof.

4. A dispenser structure according to claim 2 or 3, wherein:

the inner wall of the air outlet pipe (2) is provided with a step, and the air outlet pipe (2) provides support for the lower end of the thermosensitive ring (31) through the step.

5. The dispenser structure according to claim 1, wherein:

the thermosensitive control assembly (3) comprises a first thermal expansion piece (32) and a second thermal expansion piece (33), wherein the thermal expansion coefficient of the first thermal expansion piece (32) is larger than that of the second thermal expansion piece (33); both the first thermal expansion member (32) and the second thermal expansion member (33) are provided within the dispenser (1); one end of the first thermal expansion piece (32) and one end of the second thermal expansion piece (33) are fixed, and the other ends of the first thermal expansion piece and the second thermal expansion piece are connected to form a movable end (30);

the heat-sensitive control assembly (3) is used for closing the lower oil return hole (22) through the movable end (30) moving to a first position under the first deformation, and is used for opening the lower oil return hole (22) through the movable end (30) moving to a second position under the second deformation.

6. The dispenser structure of claim 5, wherein:

the movable end (30) opens or closes the lower oil return hole (22) through the side wall of the lower oil return hole (22) close to or far away from the air outlet pipe (2);

or the movable end (30) opens or closes the lower oil return hole (22) by moving along the central line direction of the air outlet pipe (2).

7. The dispenser structure according to claim 6, wherein:

when the movable end (30) opens or closes the lower oil return hole (22) through the side wall close to or far away from the lower oil return hole (22) of the air outlet pipe (2), the movable end (30) opens or closes the lower oil return through the outer wall of the movable end; or, the movable end (30) is provided with a first sealing piece (5), and the movable end (30) is used for driving the first sealing piece (5) to move so as to open or close the lower oil return hole (22) through the first sealing piece (5).

8. The dispenser structure of claim 7, wherein:

the first thermal expansion piece (32) and the second thermal expansion piece (33) are both sheet-shaped, the first thermal expansion piece (32) and the second thermal expansion piece (33) are both arranged in the air outlet pipe (2) in a stacked mode, and the second thermal expansion piece (33) is close to the side wall of the air outlet pipe (2) at the lower oil return hole (22) relative to the first thermal expansion piece (32).

9. The dispenser structure according to claim 6, wherein:

when the movable end (30) is used for opening or closing the lower oil return hole (22) by moving along the central line direction of the air outlet pipe (2), the movable end (30) is connected with a second sealing piece (6), the second sealing piece (6) is in sliding fit with the side wall of the air outlet pipe (2), and the movable end (30) is used for driving the second sealing piece (6) to move so as to open or close the lower oil return hole (22) through the second sealing piece (6).

10. The dispenser structure according to claim 9, wherein:

the first thermal expansion member (32) and the second thermal expansion member (33) are laminated along a spiral track to form a spiral member (7), and cross sections of the first thermal expansion member (32) and the second thermal expansion member (33) are laminated along the central line direction of the spiral member (7) at all positions on the spiral track; wherein, the spiral piece (7) is sleeved on the air outlet pipe (2).

11. A compressor, characterized in that: comprising a dispenser structure according to any one of claims 1-10.

12. An air conditioner, characterized in that: a compressor comprising the compressor of claim 11.