CN115127265A - Vapor-liquid separator, air conditioner and refrigerant supplement control method - Google Patents
Vapor-liquid separator, air conditioner and refrigerant supplement control method Download PDFInfo
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- CN115127265A CN115127265A CN202210827274.2A CN202210827274A CN115127265A CN 115127265 A CN115127265 A CN 115127265A CN 202210827274 A CN202210827274 A CN 202210827274A CN 115127265 A CN115127265 A CN 115127265A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000013589 supplement Substances 0.000 title claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
Abstract
The invention discloses a vapor-liquid separator, an air conditioner and a refrigerant supplement control method, which comprises the following steps: the air conditioner comprises a shell, wherein the shell is internally divided into a circulation chamber for gas-liquid separation and a storage chamber for storing a refrigerant, the circulation chamber is communicated with a refrigerant pipeline of the air conditioner, the storage chamber is communicated with the circulation chamber through a communicating pipe, and the communicating pipe is provided with an on-off device. The structure of the gas-liquid separator is improved, the refrigerant is stored on the outer layer, the normal refrigerant circulation is still performed on the inner layer, and the on-off control is performed between the inner layer and the outer layer through the on-off device such as the electromagnetic valve component. And a liquid level meter is arranged to control the use limit of the on-off device, so that the on-off device is prevented from being meaninglessly opened after the outer-layer refrigerant is completely replenished.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a vapor-liquid separator, an air conditioner and a refrigerant supplement control method.
Background
The service life of a common air conditioner is generally more than 10 years, and some larger air conditioning units generally require to control the service life to be more than 30 years, but in the use process of the air conditioner, due to installation problems, for example, a torque wrench is not used in the installation process of a pipeline joint of an indoor unit and an outdoor unit valve or the installation angle is slightly deviated, the leakage of a refrigerant can be accelerated in the use process, and the leakage is increased to exceed the factory standard due to bumping damage on the machine body in the transportation and installation process. Therefore, the refrigerant is added in 2-5 years in the actual use process of the air conditioning equipment, the cost is high, even if after-sales guarantee exists, the labor cost of a manufacturer is consumed, the refrigerant is inconvenient to fill, and the filling cost is high.
Disclosure of Invention
The invention provides a vapor-liquid separator, an air conditioner and a refrigerant supplement control method, aiming at solving the technical problem that the air conditioner is inconvenient to fill refrigerants in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a vapor-liquid separator comprising: the air conditioner comprises a shell, wherein the shell is internally divided into a circulation chamber for gas-liquid separation and a storage chamber for storing a refrigerant, the circulation chamber is communicated with a refrigerant pipeline of the air conditioner, the storage chamber is communicated with the circulation chamber through a communicating pipe, and the communicating pipe is provided with an on-off device.
Preferably, the housing comprises: the inner cylinder body is wrapped on the outer cylinder body of the inner cylinder body, the inner cylinder body is internally provided with the circulating chamber, and the area between the inner cylinder body and the outer cylinder body is provided with the storage chamber.
Furthermore, a restrictor is further arranged on the communicating pipe.
Further, the shell is provided with an air outlet and an air inlet which are communicated with the circulation chamber, and the air inlet and the air outlet are communicated with the refrigerant pipeline of the air conditioner. The shell is provided with a stop valve communicated with the storage chamber.
Furthermore, a liquid level meter for detecting the liquid level is arranged in the storage chamber.
The invention also provides an air conditioner which comprises the vapor-liquid separator.
The invention also provides a refrigerant supplement control method, which adopts the air conditioner and comprises the following steps:
detecting the low-pressure of the air conditioner, and determining the range of the low-pressure;
and when the low-pressure of the air conditioner is within a preset pressure range, controlling the air conditioner to execute an unloading instruction, judging whether a refrigerant supplement condition is met, and if so, carrying out pulse control on the on-off device.
And when the low-pressure of the air conditioner is greater than or equal to the upper limit value of the preset pressure range, controlling the on-off device not to act.
And when the low-pressure of the air conditioner is smaller than or equal to the lower limit value of the preset pressure range, the air conditioner enters shutdown protection, and the step of detecting the low-pressure of the air conditioner is returned after the air conditioner is restarted.
Further, when the number of times that the air conditioner enters the shutdown protection within the second preset time is larger than the preset number of times, the air conditioner reports the abnormality and stops the control of the on-off device.
And when the liquid level of the storage chamber is lower than a preset liquid level, shielding the opening control command of the on-off device.
The above-mentioned judging whether the refrigerant supplement condition is satisfied includes:
judging whether the low-pressure of the air conditioner is lower than the sum of the lower limit value of the preset pressure range and the first deviation value; and if so, controlling the on-off device to be switched on and off according to a preset pulse frequency, and controlling the on-off device to stop acting until the low-pressure of the air conditioner is greater than the sum of the upper limit value and the second deviation value of the preset pressure range or the pulse duration of the on-off device reaches a preset duration.
Specifically, the air conditioner is a variable frequency air conditioner, and the unloading instruction specifically includes: controlling the frequency of a compressor of the air conditioner to be reduced to a preset frequency and maintaining the preset time.
Specifically, the air conditioner is a fixed-frequency air conditioner, and the unloading instruction specifically includes: and controlling an outdoor unit fan of the air conditioner to stop and maintaining the second preset time.
Further, the step of detecting the low pressure of the air conditioner is performed when the total operation time of the air conditioner exceeds a preset total time.
Compared with the prior art, the structure of the gas-liquid separator is improved, the refrigerant is stored at the outer layer, the normal refrigerant circulation is still carried out at the inner layer, and the on-off control is carried out between the inner layer and the outer layer through an on-off device such as a solenoid valve assembly. And a liquid level meter is arranged to control the use limit of the on-off device, so that the on-off device is prevented from being meaninglessly opened after the outer-layer refrigerant is completely replenished.
The control of the whole on-off device is interlocked with the low-pressure of the air conditioning system, the pulse type control of the on-off assembly is carried out by utilizing logic through the judgment of the low-pressure, the unloading pressure and the protection pressure value, the fluctuation of the low-pressure in the running process is detected in time through the control of the pulse time interval, and the action instruction is quitted through the control of the main board after the pressure is recovered to a preset interval.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a front view in half section of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a top half-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic diagram of a piping of an air conditioner according to an embodiment of the present invention;
FIG. 5 is a flow chart of an embodiment of the present invention;
1. an air outlet interface; 2. an inner cylinder; 3. an outer cylinder; 4. a pipette; 5. a liquid level meter; 6. an on-off device; 7. a liquid supplementing pipe; 8. a restrictor; 9. a stop valve; 10. an air inlet interface.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and structures of the present invention are described in detail below with reference to the drawings and the embodiments.
Because the installation problem, because do not use moment spanner or installation angle slightly deviation when installing like the pipe joint of indoor set and outdoor unit valve department, can lead to the refrigerant can accelerate to reveal in the use, often 2 ~ 5 years alright probably need carry out the addition of refrigerant, need the staff to add on the door during the addition, add the expense expensive, and also need consume the personnel cost of producer in addition. In addition, in the adding process, an adding pipeline needs to be connected with a large valve and a small valve on the outdoor unit, and if manual operation is not proper, the refrigerant is leaked too fast, so that the adding efficiency is influenced. Therefore, the vapor-liquid separator with the liquid supplementing function provided by the invention can directly fill the refrigerant into the circulating pipeline of the air conditioner by controlling the on-off device of the vapor-liquid separator, does not need to disassemble and assemble the air conditioner, and has higher filling efficiency.
As shown in fig. 1 to 3, the present invention provides a vapor-liquid separator, mainly comprising: the inside of the shell is divided into a circulation chamber and a storage chamber, the circulation chamber is used for gas-liquid separation, namely the original function of a gas-liquid separator is realized, and the circulation chamber is circularly communicated with a refrigerant pipeline of an air conditioner; the storage room is used for storing the refrigerant to be filled, the storage room is communicated with the circulating room through the communicating pipe, the communicating pipe is provided with the on-off device 6, when the air conditioner needs to be filled with the refrigerant, the on-off device 6 is subjected to pulse control (namely switching frequency), the refrigerant in the storage room is automatically filled into the circulating room through the communicating pipe, and the refrigerant enters the air conditioner to perform refrigeration circulation. The valve adjustment is not needed in the process, the debugging by workers on the door is also not needed, and the vapor-liquid separator is a part originally carried by the air conditioner and is directly communicated with a circulating pipeline of the air conditioner, so that the filling is very convenient.
The on-off device can be a simple on-off valve manually controlled by a person, for example, the on-off valve is pressed to be connected, and the off-off valve is disconnected, and when the refrigerant needs to be filled, a user can perform pressing operation according to an operation instruction, for example, the pressing operation is performed for 1 second, and the off-on operation is performed for 2 seconds.
The on-off device can also be a pulse type on-off device controlled by an electric signal, regular on-off can be carried out through a pulse signal, and filling is automatically completed when a refrigerant needs to be filled.
There are various ways to divide the housing into two separate areas (storage and circulation chambers), specifically as follows:
as shown in fig. 1 and 2, the casing includes an inner cylinder 2 and an outer cylinder 3, the on-off device 6 is installed outside the outer cylinder for facilitating wiring and operation, the inner cylinder 2 is arranged at the center position in the outer cylinder 3, the inner space of the inner cylinder 2 is a circulation chamber, and the annular region between the outer cylinder 3 and the inner cylinder 2 is a storage chamber. The top of the inner cylinder body 2 is provided with an air outlet connector 1 and an air inlet connector 10 which are used for connecting an air conditioner refrigerant circulating pipeline, so that the refrigerant can be subjected to gas-liquid separation when passing through the inner cylinder body 2, and liquid impact is prevented. The top of outer barrel 3 is equipped with stop valve 9, and when the refrigerant of storing in outer barrel 3 (be the locker room) was not enough, can add through the stop valve. The communicating pipe is divided into two sections, one section is a liquid suction pipe 4, and the other section is a liquid supplementing pipe 7. One end of the pipette 4 extends into the storage chamber and is close to the bottom of the storage chamber, and the other end of the pipette 4 is connected with an on-off device 6. One end of the liquid supplementing pipe 7 extends into the circulating chamber and is close to an air inlet in the circulating chamber (namely an air inlet interface is communicated to an outlet of a pipeline in the circulating chamber), and the other end of the liquid supplementing pipe 7 is connected with the on-off device 6. Meanwhile, one end of the liquid supplementing pipe 7 is provided with a restrictor 8 which is communicated with the circulating chamber, so that the on-way resistance of the refrigerant can be increased, the supplementing efficiency of the refrigerant is controlled, and the control of the pulse frequency is realized.
In other embodiments, the housing may be divided into two spaces, i.e., a circulation chamber and a storage chamber, by providing a vertical intermediate partition plate, or divided into two spaces, i.e., an upper space and a lower space, by providing a horizontal intermediate partition plate, the upper space is the circulation chamber, and the lower space is the storage chamber.
Still be equipped with the level gauge 5 that detects the liquid level in the apotheca, the limit of use that on-off set can be controlled to the liquid level signal through the level gauge feedback prevents that the refrigerant of apotheca from supplying the back that ends up that on-off set carries out meaningless empty and opens.
As shown in fig. 4, the present invention also provides an air conditioner comprising the above-mentioned vapor-liquid separator. The air conditioner specifically comprises a compressor 11, a condenser 12, a throttling device 13, an evaporator 14 and a gas-liquid separator 15 which are connected in sequence through pipelines. And a low-pressure sensor 16 is arranged on a connecting pipeline of the compressor and the vapor-liquid separator and used for detecting low-pressure.
As shown in fig. 5, the present invention further provides a refrigerant supplement control method of the air conditioner, including:
starting the air conditioner, and judging whether the total operation time of the air conditioner exceeds the preset total time; if not, the air conditioner operates according to the original normal control logic of the air conditioner; if yes, the following steps are continued, and the preset total duration can be specifically one year, because the situation that the refrigerant needs to be replenished in the first year rarely occurs.
Detecting the low-pressure a of the air conditioner, and judging the range of the low-pressure a (the low-pressure a changes in real time during the operation of the air conditioner); and a low pressure protection pressure b (preset), a low pressure unloading pressure c (preset).
When the low-pressure a of the air conditioner is within a preset pressure range, namely b is less than a and less than c, the air conditioner is controlled to preferentially execute an unloading instruction (the unloading instruction is executed when the air conditioner is restarted), whether a refrigerant supplement condition is met or not is judged, if yes, the on-off device is subjected to pulse control, if not, the low-pressure a is temporarily low due to the influence of other factors, and the step of detecting the low-pressure of the air conditioner is returned after waiting for a period of time.
When the low-pressure a of the air conditioner is greater than or equal to (may be only greater than) the upper limit value of the preset pressure range, namely when c is less than a, the condition that the liquid supplementing operation is not needed at all is indicated, namely the on-off device is controlled not to act.
When the low-pressure a of the air conditioner is smaller than or equal to (can be only smaller than) the lower limit value of the preset pressure range, namely when a is smaller than b, the air conditioner enters shutdown protection, whether the frequency of the air conditioner entering the shutdown protection within the second preset time period is larger than the preset frequency is judged, if yes, the air conditioner reports the abnormity, and the control of the on-off device is stopped; if not, the step of detecting the low pressure of the air conditioner is returned after the air conditioner is restarted. Because if multiple shutdowns occur, at least one refrigerant charge must have been replenished, indicating that the low pressure may be too low due to other faults.
And when the liquid level of the storage chamber is lower than the preset liquid level, shielding the opening control command of the on-off device, and recovering the opening control command of the on-off device until the liquid level is higher than the second preset liquid level. The on-off device is prevented from being meaninglessly opened after the refrigerant is replenished completely. Meanwhile, the user can be reminded to supplement the refrigerant in the storage chamber for subsequent use.
The step of judging whether the refrigerant supplement condition is satisfied includes:
controlling the air conditioner to execute an unloading instruction, and judging whether the low-pressure a of the air conditioner is lower than the sum of a lower limit value b and a first deviation value (b & ltb '%), namely whether a & ltb + b & ltb'%, is true; if so, controlling the on-off device to be switched off according to a preset pulse frequency until the low-pressure a of the air conditioner is greater than the sum of an upper limit value c and a second deviation value (c + c '%) of a preset pressure range (namely a is greater than c + c'%) or the pulse duration of the on-off device reaches a preset duration, and controlling the on-off device to stop acting. The amount of the refrigerant replenished every time is controllable, and the system fault caused by excessive refrigerant replenished every time is prevented.
It should be noted that, when the air conditioner is a fixed-frequency air conditioner, the unloading instruction specifically includes: and controlling an outdoor unit fan of the air conditioner to stop and maintaining the second preset time.
When the air conditioner is a variable frequency air conditioner, the unloading instruction specifically comprises: controlling the frequency of a compressor of the air conditioner to be reduced to a preset frequency and maintaining the preset time.
The following is a description of the practice of the above-described method of the present invention.
Firstly, the air conditioning unit does not control the on-off device in the first year of operation, because if serious low-pressure abnormality occurs in the operation process in the first year, the probability that system blockage and sensor abnormality occur or that the unit seriously leaks abnormally is shown.
When the unit operates to the next year, the pulse control of the on-off device is carried out by monitoring the relationship between the low-pressure a and the low-pressure protection pressure b (preset value) and the low-pressure unloading pressure c (preset value).
When c < a, the on-off device does not act.
When b is less than a and less than c, the air conditioning equipment preferentially executes an unloading instruction, the unloading instruction of the variable frequency air conditioner is that the compressor is reduced to the lowest frequency and operates for e seconds, the fixed frequency air conditioner is that the outdoor unit fan stops and continuously unloads for f seconds, after the unloading instruction is executed, if the low pressure a is reduced to b + b '% (b ' is a test value), namely a is less than b + b '%, immediately executing pulse control of the on-off device, the specific frequency of the pulse control is that the on-off device is opened for u seconds and closed for v seconds, and when the c + c '% < a (c ' is a test value), the on-off device is closed or the pulse duration is integrally greater than s seconds. All of e, f, u, and v described above can be adjusted according to actual needs.
When a is less than b, the air conditioner will be protected to stop, after the start is restarted, the low-pressure a will gradually rise to b less than a, so the unloading instruction and the subsequent steps will be automatically executed, if the air conditioner still has the protection stop after the start is continuously started for g times in a short time, the uncontrollable abnormity of the air conditioner is judged, and the control of the on-off device is stopped.
When the liquid level meter gives an alarm, the refrigerant in the storage chamber of the gas-liquid separator is lower than the liquid level capable of being filled, and the opening control command of the on-off device is not executed until the liquid level meter is reset.
(b < c < a in normal operation of the air conditioning apparatus).
It is noted that the terminology used above is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship 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 of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A vapor-liquid separator, comprising: the air conditioner comprises a shell, wherein a circulation chamber for gas-liquid separation and a storage chamber for storing a refrigerant are separated from each other in the shell, the circulation chamber is communicated with a refrigerant pipeline of the air conditioner, the storage chamber is communicated with the circulation chamber through a communicating pipe, and an on-off device is arranged on the communicating pipe.
2. The vapor-liquid separator of claim 1, wherein the housing comprises: the inner cylinder body is wrapped on the outer cylinder body of the inner cylinder body, the inner cylinder body is internally provided with the circulating chamber, and the area between the inner cylinder body and the outer cylinder body is provided with the storage chamber.
3. The vapor-liquid separator according to claim 1 wherein said communicating tube is further provided with a restrictor.
4. The vapor-liquid separator according to claim 1, wherein said housing has an air outlet and an air inlet communicating with said circulation chamber, said air inlet and said air outlet communicating with said refrigerant conduit of the air conditioner.
5. The vapor-liquid separator of claim 1, wherein the housing has a shut-off valve in communication with the storage chamber.
6. The vapor-liquid separator of claim 1, wherein a liquid level gauge is disposed within the storage chamber to detect liquid level.
7. An air conditioner characterized by comprising the vapor-liquid separator according to any one of claims 1 to 6.
8. A refrigerant replenishment control method, characterized by adopting the air conditioner as claimed in claim 7, comprising the steps of:
detecting the low-pressure of the air conditioner, and determining the range of the low-pressure;
and when the low-pressure of the air conditioner is within a preset pressure range, controlling the air conditioner to execute an unloading instruction, judging whether a refrigerant supplement condition is met, and if so, carrying out pulse control on the on-off device.
9. The refrigerant charge control method of an air conditioner according to claim 8, wherein the on/off device is controlled not to be operated when a low pressure of the air conditioner is greater than or equal to an upper limit of a preset pressure range.
10. The refrigerant charge control method of an air conditioner according to claim 8, wherein when the low pressure of the air conditioner is less than or equal to the lower limit of the preset pressure range, the air conditioner is controlled to enter a shutdown protection, and the step of detecting the low pressure of the air conditioner is returned after the air conditioner is restarted.
11. The refrigerant charge control method of an air conditioner according to claim 10, wherein when the number of times the air conditioner enters the shutdown protection within the second preset time period is greater than a preset number of times, the air conditioner reports an abnormality and stops the control of the on-off device.
12. The refrigerant charge control method of an air conditioner according to claim 8, wherein the determining whether the refrigerant charge condition is satisfied specifically includes:
judging whether the low-pressure of the air conditioner is lower than the sum of the lower limit value of the preset pressure range and the first deviation value; and if so, controlling the on-off device to be switched on and off according to a preset pulse frequency, and controlling the on-off device to stop acting until the low-pressure of the air conditioner is greater than the sum of the upper limit value of the preset pressure range and the second deviation value or the pulse duration of the on-off device reaches a preset duration.
13. The refrigerant charge control method of claim 8, wherein the air conditioner is an inverter air conditioner, and the unload command specifically includes: controlling the frequency of a compressor of the air conditioner to be reduced to a preset frequency and maintaining the preset time.
14. The refrigerant charge control method of claim 8, wherein the air conditioner is a fixed frequency air conditioner, and the unload command specifically includes: and controlling an outdoor unit fan of the air conditioner to stop and maintaining the second preset time.
15. The refrigerant charge control method of an air conditioner according to claim 8, wherein when the liquid level of the storage compartment is lower than a preset liquid level, an on-off control command of the on-off device is shielded.
16. The refrigerant charge control method of an air conditioner according to claim 8, wherein the step of detecting a low pressure of the air conditioner is performed when a total operation time period of the air conditioner exceeds a preset total time period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210827274.2A CN115127265A (en) | 2022-07-13 | 2022-07-13 | Vapor-liquid separator, air conditioner and refrigerant supplement control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210827274.2A CN115127265A (en) | 2022-07-13 | 2022-07-13 | Vapor-liquid separator, air conditioner and refrigerant supplement control method |
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| US20190178543A1 (en) * | 2017-12-12 | 2019-06-13 | Rheem Manufacturing Company | Accumulator and Oil Separator |
| CN110836417A (en) * | 2019-11-18 | 2020-02-25 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
| CN111271903A (en) * | 2020-04-07 | 2020-06-12 | 广东美的暖通设备有限公司 | Gas-liquid separator, refrigeration or heat pump system, control method and storage medium |
| CN211551798U (en) * | 2019-11-18 | 2020-09-22 | 珠海格力电器股份有限公司 | Air conditioner |
| WO2022113211A1 (en) * | 2020-11-25 | 2022-06-02 | ダイキン工業株式会社 | Refrigerant recovery device |
| CN217636299U (en) * | 2022-07-13 | 2022-10-21 | 珠海格力电器股份有限公司 | Vapour and liquid separator and air conditioner |
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| JPH06207759A (en) * | 1993-01-08 | 1994-07-26 | Toyota Motor Corp | Liquid gas separating device for long refrigerant pipe |
| KR20030051090A (en) * | 2001-12-20 | 2003-06-25 | 주식회사 엘지이아이 | Device reducing vibration of compressor by accumulator |
| JP2004044939A (en) * | 2002-07-12 | 2004-02-12 | Sanyo Electric Co Ltd | Existing pipe washing method and system for air conditioner |
| JP2009092060A (en) * | 2007-09-19 | 2009-04-30 | Nippon Soken Inc | Oil separator |
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