CN209944816U - Air conditioner control system for continuous heating and air conditioner - Google Patents
Air conditioner control system for continuous heating and air conditioner Download PDFInfo
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- CN209944816U CN209944816U CN201920364719.1U CN201920364719U CN209944816U CN 209944816 U CN209944816 U CN 209944816U CN 201920364719 U CN201920364719 U CN 201920364719U CN 209944816 U CN209944816 U CN 209944816U
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Abstract
The utility model discloses an air conditioner control system and air conditioner for heating in succession, wherein, this system includes: including compressor, vapour and liquid separator, outdoor heat exchanger to and: and one end of the liquid separating device is connected with the gas-liquid separator, and the other end of the liquid separating device is connected with the compressor and used for receiving the liquid refrigerant separated by the gas-liquid separator, converting the liquid refrigerant into a gaseous refrigerant and then sending the gaseous refrigerant into the compressor. The utility model provides an air conditioning system guarantee that indoor ambient temperature is stable among the prior art because hydrops or frosting lead to the great problem of indoor temperature fluctuation.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to an air conditioner control system and air conditioner for heating in succession.
Background
At present, in the heating and defrosting process of a multi-split air conditioning system, a compressor of a unit is required to reduce the frequency, a four-way valve is used for reversing, the flow direction of a refrigerant is changed, the high-temperature refrigerant is enabled to defrost an outdoor heat exchanger, an indoor unit is located on an evaporation side in the process and cannot continuously heat, the indoor environment temperature is fluctuated, and the comfort of the unit is greatly influenced. Meanwhile, under the low temperature condition, the steam of the unit is easy to generate liquid loading and frosting, the evaporation temperature of the system is affected, and the heating effect cannot be guaranteed.
Aiming at the problem that the fluctuation of indoor temperature is large due to accumulated liquid or frosting of an air conditioning system in the related art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air conditioner control system and air conditioner for heating in succession to solve air conditioning system among the prior art at least and lead to the great problem of indoor temperature fluctuation because hydrops or frosting.
In order to solve the technical problem, according to the utility model discloses an aspect of the embodiment provides an air conditioner control system, including compressor, vapour and liquid separator, outdoor heat exchanger, still include: and one end of the liquid separating device is connected with the gas-liquid separator, and the other end of the liquid separating device is connected with the compressor and used for receiving the liquid refrigerant separated by the gas-liquid separator, converting the liquid refrigerant into a gaseous refrigerant and then sending the gaseous refrigerant into the compressor.
Further, the system further comprises: and one end of the bypass branch is connected with the exhaust side of the compressor, and the other end of the bypass branch is connected with the outdoor heat exchanger, and is used for directly introducing the refrigerant discharged by the compressor into the outdoor heat exchanger to defrost the outdoor heat exchanger when the system enters defrosting mode.
Further, divide liquid device still includes: the heating device is used for heating the liquid refrigerant into the gaseous refrigerant.
Furthermore, the outlet of the liquid separating device is connected with the air suction port of the compressor through the first exhaust valve, and the gaseous refrigerant in the liquid separating device is sent to the air suction port of the compressor, so that the control of preventing liquid accumulation is realized.
Furthermore, the outlet of the liquid separating device is connected with the enthalpy increasing port of the compressor through a second exhaust valve, and the liquid separating device is used for sending the gaseous refrigerant in the liquid separating device into the enthalpy increasing port of the compressor to realize enthalpy increasing control.
Further, the outlet of the liquid separating device is also connected with the outlet of the gas-liquid separator through a gas balance valve, and the gas balance valve is used for balancing the internal pressure of the liquid separating device.
And furthermore, a bypass valve is arranged on the bypass branch and is used for entering an open state when the system is defrosted, and part of refrigerant discharged by the compressor is directly introduced into the outdoor heat exchanger to defrosted the outdoor heat exchanger.
According to another aspect of the embodiments of the present invention, there is provided an air conditioner including the air conditioner control system as described above.
The utility model discloses in, a air conditioner control system for heating in succession is provided, include: liquid separating device receives the liquid refrigerant of vapour and liquid separator separation, has avoided the hydrops problem that vapour and liquid separator probably appears, sends into the compressor after turning into gaseous refrigerant with liquid refrigerant simultaneously, has improved the air suction capacity of compressor, compressor air suction capacity when including the defrosting effectively solves among the prior art air conditioning system because hydrops or frosting lead to the great problem of temperature fluctuation, guarantees that the interior machine of unit continuously heats, guarantees that indoor environment temperature is stable.
Drawings
Fig. 1 is an alternative block diagram of a defrosting control system according to an embodiment of the present invention;
fig. 2 is an alternative refrigerant flow diagram for normal heating operation according to an embodiment of the present invention;
fig. 3 is an alternative refrigerant flow diagram for effusion control prevention according to an embodiment of the present invention;
fig. 4 is another alternative refrigerant flow diagram for effusion control prevention according to an embodiment of the invention; and
fig. 5 is an alternative refrigerant flow diagram of defrosting operation according to an embodiment of the present invention.
Description of reference numerals:
1. a compressor; 2. an oil separator; 3. a four-way valve; 4. an outdoor heat exchanger; 5. an outdoor fan; 6. an outdoor heating electronic expansion valve; 7. a bypass valve; 8. a gas-liquid separator; 9. a liquid separating device; 10. a drain valve; 11. an exhaust valve 1; 12. a heating device; 13. a gas balance valve; 14. A gas outlet temperature sensing bulb; 15. the temperature of the steam outlet pipe; 16. the temperature of the steam inlet pipe; 17. and (4) an exhaust valve 2.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
In a preferred embodiment 1 of the present invention, there is provided an air conditioning control system, and specifically, fig. 1 shows an alternative structural block diagram of the apparatus, and as shown in fig. 1, the apparatus includes: the compressor 1, the gas-liquid separator 8, and the outdoor heat exchanger 4, in addition, include:
and one end of the liquid separating device 9 is connected with the gas-liquid separator 8, and the other end of the liquid separating device is connected with the compressor 1, and is used for receiving the liquid refrigerant separated by the gas-liquid separator 8, converting the liquid refrigerant into a gaseous refrigerant and then sending the gaseous refrigerant into the compressor 1.
In the above embodiments, there is provided an air conditioning control system for continuous heating, including: liquid separating device receives the liquid refrigerant of vapour and liquid separator separation, has avoided the hydrops problem that vapour and liquid separator probably appears, sends into the compressor after turning into gaseous refrigerant with liquid refrigerant simultaneously, has improved the air suction capacity of compressor, compressor air suction capacity when including the defrosting effectively solves among the prior art air conditioning system because hydrops or frosting lead to the great problem of temperature fluctuation, guarantees that the interior machine of unit continuously heats, guarantees that indoor environment temperature is stable.
In addition, the system further comprises: and one end of the bypass branch is connected with the exhaust side of the compressor, and the other end of the bypass branch is connected with the outdoor heat exchanger, and is used for directly introducing the refrigerant discharged by the compressor into the outdoor heat exchanger to defrost the outdoor heat exchanger when the system enters defrosting mode.
As shown in fig. 1, a bypass valve 7 is disposed on the bypass branch, and is configured to be turned on when the system is defrosted, so that a portion of refrigerant generated by the compressor is introduced into the outdoor heat exchanger to defrosted the outdoor heat exchanger. The unit enters a defrosting process, the bypass valve is opened, the four-way valve does not need to be reversed, the inner unit continues to heat and run, and part of high-temperature refrigerant directly passes through the bypass branch to defrost the outdoor heat exchanger.
Bypass branch road is connected with compressor and outdoor heat exchanger, when the system got into and changes frost, the refrigerant that flows out from the compressor not only gets into indoor heat exchanger according to normal channel, still let in outdoor heat exchanger through the refrigerant that bypass branch road produced the compressor, change frost to outdoor heat exchanger, thereby guarantee under the condition that satisfies indoor heat transfer demand, also realize changing frost to outdoor heat exchanger, effectively solve air conditioning system among the prior art because hydrops or frosting lead to the great problem of temperature fluctuation, guarantee that the interior machine of unit lasts to heat, guarantee that indoor ambient temperature is stable.
In a preferred embodiment of the present invention, the liquid separating device further includes: the heating device 12 is configured to heat the liquid refrigerant into a gaseous refrigerant, and to introduce the gaseous refrigerant into the compressor.
Furthermore, the outlet of the liquid separating device is connected with the air suction port of the compressor through a first exhaust valve (exhaust valve 1) and used for sending the gaseous refrigerant in the liquid separating device into the compressor, so that liquid accumulation prevention control is realized. Under the condition of low temperature, the steam of the unit is easy to generate liquid loading and frost formation, the evaporation temperature of the system is influenced, and the heating effect cannot be ensured. The evaporation temperature is increased by heating the liquid refrigerant in the steam, and the air suction quantity of the compressor is enhanced and the low-temperature heating quantity is increased by adopting an EVI device.
Further, the outlet of the liquid separating device is connected with the enthalpy increasing port of the compressor through a second exhaust valve (exhaust valve 2) and used for sending the gaseous refrigerant in the liquid separating device into the enthalpy increasing port of the compressor to realize enthalpy increasing control. The heated refrigerant can enter the enthalpy spraying port of the compressor, the air displacement of the compressor is increased, the low-temperature heating capacity is further increased, and if the enthalpy spraying of the compressor is not needed, the refrigerant directly returns to the air suction port of the compressor.
Wherein, the outlet of the liquid separating device is also connected with the outlet of the gas-liquid separator 8 through a gas balance valve 13 for balancing the internal pressure of the liquid separating device.
As shown in fig. 1, a bypass branch is added to an oil component 2 outlet pipe of the system, the outlet is connected with the outlet of the outdoor heat exchanger 4 in the refrigerating direction, a liquid separating device 9 is added to a steam component 8, the bottom of the steam component 8 is connected with the liquid separating device 9 through a liquid discharging valve 10, a heating device 12 is installed at the bottom of the liquid separating device 9, a gas balance valve 13, an exhaust valve 1(11) (a first exhaust valve) and an exhaust valve 2(17) (a second exhaust valve) are respectively arranged at an exhaust port of the liquid separating device 9, the gas balance valve 13 is connected with the outlet pipe of the steam component 8, the internal pressure balance of; the exhaust valve 1(11) is connected with the enthalpy increasing port of the compressor 1, and the exhaust valve 2(17) is connected with the suction port of the compressor 1.
The utility model discloses in, divide into the operation of system normal heating operation, prevent hydrops control, change the frost operation.
1. Normal heating operation
The refrigerant flows as shown in fig. 2, and the bypass branch and the liquid separating device do not participate in the work. After the refrigerant works by the compressor, the refrigerant directly enters the inner machine for condensation and heating, then returns to the outer machine heat exchanger for evaporation and absorption of heat, and then flows through the steam branch and returns to the compressor.
2. Hydrops prevention control
The refrigerant flows as shown in attached figures 3 and 4, the bypass branch does not work, and the liquid separating device participates in control.
Entering this control condition: in the heating mode, the control action is executed when the temperature of the steam inlet pipe is 16-the temperature of the steam outlet pipe is 15 is more than or equal to A ℃.
Control action 1: enthalpy increasing control for unit entrance
The control method is adopted when enthalpy increasing control is detected to be needed by the system. The refrigerant flows as shown in figure 3, a drain valve 10 and an exhaust valve 11 are opened, an exhaust valve 17 is closed, the liquid refrigerant in the vapor phase separator flows into the liquid separating device, the synchronous heating device starts to work, the liquid refrigerant in the liquid separating device is heated to be medium-pressure gas, and then the medium-pressure gas enters a medium-pressure cavity of the compressor through an enthalpy spraying pipeline to be secondarily compressed.
Control action 2: enthalpy increasing control for unit without entering
The control method is adopted when enthalpy increasing control is not needed by the system. The refrigerant flows as shown in figure 4, a drain valve 10 and an exhaust valve 17 are opened, an exhaust valve 11 is closed, the liquid refrigerant in the vapor phase separator flows into the liquid separating device, the synchronous heating device starts to work, the liquid refrigerant in the liquid separating device is heated to be medium-pressure gas, and then the medium-pressure gas is mixed with the refrigerant at the gas outlet and returns to the suction port of the compressor together.
After the control of preventing liquid accumulation is carried out, the gas balance 13 is started once every Ts interval, and smooth liquid separation is ensured.
The power of the heating device is adjustable, and the judgment is carried out according to the gas outlet temperature 14 of the liquid separating device:
| Tgas outlet | Electric heating power |
| TGas outlet≥C | 0 |
| B≤TGas outlet＜C | M |
| TGas outlet＜B | N |
Wherein M is less than N.
3. Defrosting operation
The refrigerant flows as shown in FIG. 5. The bypass branch and the liquid separating device both participate in the work.
The bypass valve 7 is opened, the high-temperature refrigerant flows through the bypass branch, enters the outdoor heat exchanger 4 to defrost the heat exchanger, and then flows through the four-way valve 3 to return to the steam distributor 8.
After defrosting, in order to realize rapid defrosting, enthalpy increasing control is forced to be performed: and opening a drain valve 10 and an exhaust valve 11, closing an exhaust valve 17, enabling the liquid refrigerant in the steam component to flow into the liquid separating device, starting the synchronous heating device to work, heating the liquid refrigerant in the liquid separating device into medium-pressure gas, and then entering a medium-pressure cavity of the compressor through an enthalpy spraying pipeline for secondary compression.
The control is carried out, the electric heating power at the bottom of the liquid separating device can be forcibly executed according to the maximum grade, at the moment, the indoor heat exchanger and the outdoor heat exchanger are both used as condensation sides, medium-pressure liquid refrigerants in the system are increased, the electric heating power is increased, the evaporation heat exchange quantity is supplemented, and the heating quantity of a unit is ensured.
Example 2
Based on the air conditioner control system provided in the above embodiment 1, the utility model also provides an air conditioner in the preferred embodiment 2, including as aforementioned air conditioner control system.
In the above embodiments, there is provided an air conditioning control system for continuous heating, including: liquid separating device receives the liquid refrigerant of vapour and liquid separator separation, has avoided the hydrops problem that vapour and liquid separator probably appears, sends into the compressor after turning into gaseous refrigerant with liquid refrigerant simultaneously, has improved the air suction capacity of compressor, compressor air suction capacity when including the defrosting effectively solves among the prior art air conditioning system because hydrops or frosting lead to the great problem of temperature fluctuation, guarantees that the interior machine of unit continuously heats, guarantees that indoor environment temperature is stable.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (8)
1. The utility model provides an air conditioner control system, includes compressor, vapour and liquid separator, outdoor heat exchanger, its characterized in that still includes:
and one end of the liquid separating device is connected with the gas-liquid separator, and the other end of the liquid separating device is connected with the compressor and used for receiving the liquid refrigerant separated by the gas-liquid separator, converting the liquid refrigerant into a gaseous refrigerant and then sending the gaseous refrigerant into the compressor.
2. The system of claim 1, further comprising:
and one end of the bypass branch is connected with the exhaust side of the compressor, the other end of the bypass branch is connected with the outdoor heat exchanger, and the bypass branch is used for directly introducing the refrigerant discharged by the compressor into the outdoor heat exchanger to defrost the outdoor heat exchanger when the system is defrosted.
3. The system of claim 1, wherein the dispensing device further comprises:
and the heating device is used for heating the liquid refrigerant into a gaseous refrigerant.
4. The system of claim 3, wherein the outlet of the liquid separating device is connected with the suction port of the compressor through a first exhaust valve, and is used for sending the gaseous refrigerant in the liquid separating device into the suction port of the compressor, so as to realize liquid accumulation prevention control.
5. The system of claim 3, wherein the outlet of the liquid separation device is connected to the enthalpy increasing port of the compressor through a second vent valve, and is configured to deliver the gaseous refrigerant in the liquid separation device to the enthalpy increasing port of the compressor, so as to achieve enthalpy increasing control.
6. The system of claim 1, wherein the outlet of the liquid separating device is further connected to the outlet of the gas-liquid separator through a gas balancing valve for balancing the internal pressure of the liquid separating device.
7. The system as claimed in claim 2, wherein the bypass branch is provided with a bypass valve for opening when the system is in defrosting mode, and part of refrigerant discharged from the compressor is directly introduced into the outdoor heat exchanger to defrost the outdoor heat exchanger.
8. An air conditioner characterized by comprising the air conditioning control system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364719.1U CN209944816U (en) | 2019-03-21 | 2019-03-21 | Air conditioner control system for continuous heating and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364719.1U CN209944816U (en) | 2019-03-21 | 2019-03-21 | Air conditioner control system for continuous heating and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209944816U true CN209944816U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920364719.1U Active CN209944816U (en) | 2019-03-21 | 2019-03-21 | Air conditioner control system for continuous heating and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN209944816U (en) |
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- 2019-03-21 CN CN201920364719.1U patent/CN209944816U/en active Active
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