CN211876411U - Air conditioning unit capable of continuously heating - Google Patents
Air conditioning unit capable of continuously heating Download PDFInfo
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- CN211876411U CN211876411U CN202020376426.8U CN202020376426U CN211876411U CN 211876411 U CN211876411 U CN 211876411U CN 202020376426 U CN202020376426 U CN 202020376426U CN 211876411 U CN211876411 U CN 211876411U
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Abstract
The utility model discloses an air conditioning unit who heats in succession, wherein, this air conditioning unit includes: the air conditioner comprises a compressor, an indoor heat exchanger, a first outdoor heat exchanger, a second outdoor heat exchanger, a first four-way valve, a second four-way valve, a first throttling element and a second throttling element; the first four-way valve and the second four-way valve are used for controlling the first outdoor heat exchanger and the second outdoor heat exchanger to defrost in turn. The utility model provides a prior art air conditioner defrosting in-process indoor set can't continue the thermal problem of output, can guarantee outdoor heat exchanger and change the frost fast, can guarantee the incessant heat supply in indoor side room again.
Description
Technical Field
The utility model relates to an air conditioning technology field particularly, relates to an air conditioning unit who heats in succession.
Background
For the existing unit type cooling and heating air conditioner, under the heating working condition of the whole unit type cooling and heating air conditioner system, the outdoor heat exchanger is used as an evaporator, the surface temperature is lower than the ambient temperature, and the surface frosting phenomenon can occur after the unit type cooling and heating air conditioner is operated for a period of time. After the frost layer is formed, the heat transfer resistance of the heat exchanger is increased, and the heat exchange efficiency of the outdoor heat exchanger is reduced. Therefore, when the heat pump system operates in a heating mode, the frost layer needs to be timely defrosted according to the temperature detection of the outdoor coil pipe sensor, the defrosting process can be converted into the cooling mode, the indoor unit cannot continuously output heat, the indoor environment temperature can be absorbed, and the customer experience is seriously influenced.
Therefore, there is an urgent need for an air conditioner that can continuously heat and operate in a low temperature environment, and that can completely defrost without affecting the long-term operation of the whole air conditioner.
Aiming at the problem that the indoor unit can not continuously output heat in the defrosting process of the air conditioner in the related art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air conditioning unit who heats in succession to solve among the prior art air conditioner defrosting process indoor set at least and can't continue the thermal problem of output.
In order to solve the above technical problem, according to the utility model discloses an aspect of the embodiment provides an air conditioning unit, include: the system comprises a compressor 1, an indoor heat exchanger 2, a first outdoor heat exchanger 3, a second outdoor heat exchanger 4, a first four-way valve 5, a second four-way valve 6, a first throttling element 7 and a second throttling element 8; wherein, the first end of the first outdoor heat exchanger 3 is connected with the compressor 1 and the second four-way valve 6 through the first four-way valve 5, and the second end of the first outdoor heat exchanger 3 is connected with the second throttling element 8 through the first throttling element 7; a first end of the second outdoor heat exchanger 4 is connected with the compressor 1 and the indoor heat exchanger 2 through a second four-way valve 6, and a second end of the second outdoor heat exchanger 4 is connected with a second throttling element 8; wherein, the second throttling element 8 is also connected with the indoor heat exchanger 2; the first four-way valve 5 and the second four-way valve 6 are used for controlling the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 to defrost in turn.
Further, a port C of the first four-way valve 5 is connected to the first end of the first outdoor heat exchanger 3, a port D of the first four-way valve 5 is connected to the exhaust port of the compressor 1, a port S of the first four-way valve 5 is connected to the suction port of the compressor 1, and a port E of the first four-way valve 5 is connected to the first end of the second outdoor heat exchanger 4.
Further, a port C of the second four-way valve 6 is connected to the first end of the second outdoor heat exchanger 4 and a port E of the first four-way valve 5, a port D of the second four-way valve 6 is connected to an exhaust port of the compressor 1, a port S of the second four-way valve 6 is connected to an intake port of the compressor 1, and a port E of the first four-way valve 5 is connected to the first end of the indoor heat exchanger 2.
Further, the operation modes of the air conditioning unit at least comprise a complete heating mode; in the complete heating mode, the first four-way valve 5 and the second four-way valve 6 are both energized, and the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 both serve as evaporators for heat exchange.
Further, the operation modes of the air conditioning unit at least comprise a continuous heating defrosting mode; in the continuous heating and defrosting mode, the first four-way valve 5 is powered off and the second four-way valve 6 is powered on to defrost the first outdoor heat exchanger 3, or the first four-way valve 5 is powered on and the second four-way valve 6 is powered off to defrost the second outdoor heat exchanger 4.
Further, still include: the first check valve 9 is positioned between the port E of the second four-way valve 6 and the indoor heat exchanger 2 and used for preventing the refrigerant from flowing back to the second four-way valve 6 from the indoor heat exchanger 2; and the second check valve 10 is located between the port E of the first four-way valve 5 and the second outdoor heat exchanger 4, and is used for preventing the refrigerant from flowing back to the second outdoor heat exchanger 4 from the first four-way valve 5.
Further, the lower parts of the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 comprise water receiving trays for containing defrosting water and electric heating belts for assisting defrosting.
The utility model discloses in, outer machine condenser divides two sections to control respectively, through two cross valves, constitutes and lasts heating system, under cross valve switching-over effect, two sections of outer machine condenser change frost in turn stage by stage. The outdoor heat exchanger can ensure that the shell of the existing air conditioner is not changed, the target requirement can be met only by adding the four-way valve, the problem that the indoor unit can not continuously output heat after defrosting in the heating process of the air conditioner in winter is effectively solved, quick defrosting of the outdoor heat exchanger can be ensured, and uninterrupted heat supply of an indoor room can be ensured.
Drawings
Fig. 1 is an alternative schematic diagram of a refrigerant flow direction in a complete heating mode according to an embodiment of the present invention;
fig. 2 is an alternative schematic view of a refrigerant flow direction in a continuous heating mode according to an embodiment of the present invention;
fig. 3 is another alternative schematic view of the refrigerant flow direction in the continuous heating mode according to the embodiment of the present invention;
fig. 4 is a state diagram of the indoor heat exchanger and the outdoor heat exchanger in a full heating mode according to an embodiment of the present invention;
fig. 5 is a state diagram of the indoor heat exchanger and the outdoor heat exchanger in the continuous heating defrosting mode according to the embodiment of the present invention; and
fig. 6 is another state diagram of the indoor heat exchanger and the outdoor heat exchanger in the continuous heating defrosting mode according to the embodiment of the present invention.
Description of reference numerals:
1. a compressor; 2. an indoor heat exchanger; 3. a first outdoor heat exchanger; 4. a second outdoor heat exchanger; 5. a first four-way valve; 6. a second four-way valve; 7. a first throttling element; 8. a second throttling element; 9. a first check valve; 10. a second one-way valve.
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 unit, and specifically, fig. 1 shows an optional structural block diagram of the apparatus, and as shown in fig. 1, the air conditioning unit includes:
the system comprises a compressor 1, an indoor heat exchanger 2, a first outdoor heat exchanger 3, a second outdoor heat exchanger 4, a first four-way valve 5, a second four-way valve 6, a first throttling element 7 and a second throttling element 8;
wherein, the first end of the first outdoor heat exchanger 3 is connected with the compressor 1 and the second four-way valve 6 through the first four-way valve 5, and the second end of the first outdoor heat exchanger 3 is connected with the second throttling element 8 through the first throttling element 7; a first end of the second outdoor heat exchanger 4 is connected with the compressor 1 and the indoor heat exchanger 2 through a second four-way valve 6, and a second end of the second outdoor heat exchanger 4 is connected with a second throttling element 8; wherein, the second throttling element 8 is also connected with the indoor heat exchanger 2;
the first four-way valve 5 and the second four-way valve 6 are used for controlling the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 to defrost in turn.
In the above embodiment, the outdoor unit condenser is divided into two sections to be controlled respectively, a continuous heating system is formed by two four-way valves, and the two sections of the outdoor unit condenser are defrosted in turn in stages under the reversing action of the four-way valves. The outdoor heat exchanger can ensure that the shell of the existing air conditioner is not changed, the target requirement can be met only by adding the four-way valve, the problem that the indoor unit can not continuously output heat after defrosting in the heating process of the air conditioner in winter is effectively solved, quick defrosting of the outdoor heat exchanger can be ensured, and uninterrupted heat supply of an indoor room can be ensured.
In the above embodiment, the outdoor heat exchanger is divided into the upper and lower two parts, i.e., the first outdoor heat exchanger 3 (upper part of the outdoor heat exchanger) and the second outdoor heat exchanger 4 (lower part of the outdoor heat exchanger). The matched fan can adopt a double-blade outer machine, and the upper part and the lower part of the double-blade outer machine are respectively matched with the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4.
As shown in fig. 1, a port C of the first four-way valve 5 is connected to a first end of the first outdoor heat exchanger 3, a port D of the first four-way valve 5 is connected to an exhaust port of the compressor 1, a port S of the first four-way valve 5 is connected to an intake port of the compressor 1, and a port E of the first four-way valve 5 is connected to a first end of the second outdoor heat exchanger 4. Further, a port C of the second four-way valve 6 is connected to the first end of the second outdoor heat exchanger 4 and a port E of the first four-way valve 5, a port D of the second four-way valve 6 is connected to an exhaust port of the compressor 1, a port S of the second four-way valve 6 is connected to an intake port of the compressor 1, and a port E of the first four-way valve 5 is connected to the first end of the indoor heat exchanger 2.
Preferably, the operation mode of the air conditioning unit at least comprises a complete heating mode; fig. 1 also shows a schematic flow direction diagram of a refrigerant in a complete heating mode, in the complete heating mode, the first four-way valve 5 and the second four-way valve 6 are both powered on, and the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 both serve as evaporators for heat exchange, as shown in fig. 1, the refrigerant completely enters the indoor heat exchanger through the four-way valve, exchanges heat with the indoor side, is throttled by the second throttling element 8, enters the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4, and returns to an air suction port of the compressor 1 after being evaporated.
In the utility model, the operation mode of the air conditioning unit also comprises a continuous heating and defrosting mode; in the continuous heating and defrosting mode, the first four-way valve 5 is powered off and the second four-way valve 6 is powered on to defrost the first outdoor heat exchanger 3, or the first four-way valve 5 is powered on and the second four-way valve 6 is powered off to defrost the second outdoor heat exchanger 4.
Before entering the continuous heating defrosting mode, the unit is generally in a complete heating mode, namely the first four-way valve 5 and the second four-way valve 6 are powered on. After entering continuous heating and defrosting, the second four-way valve 6 maintains the original mode, the first four-way valve 5 is powered off, the refrigerant flows to the direction shown in fig. 2, a port D and a port C of the first four-way valve 5 are communicated, the high-temperature refrigerant discharged by the compressor enters the first outdoor heat exchanger 3 through DC to be condensed and release heat, the refrigerant is defrosted, and then enters the second outdoor heat exchanger 4 through the first throttling element 7 after being throttled to be evaporated and then returns to the air suction port of the compressor 1; meanwhile, when the second four-way valve 6 is electrified, the port D is communicated with the port E, and a high-temperature exhaust refrigerant of the compressor 1 enters the indoor unit heat exchanger through the port DE, then enters the second outdoor heat exchanger 4 after being throttled by the second throttling element 8, and then returns to the suction port of the compressor 1. Preferably, the opening of the second restriction element 8 is adjusted to 480 b. This control can ensure that the defrosting of the upper section of the outdoor unit, i.e., the first outdoor heat exchanger 3, is completed, while the indoor unit heats.
After the defrosting of the upper section of the external machine is finished, the continuous heating defrosting control mode enters the lower section of the external machine for defrosting: the first four-way valve 5 is powered on, the second four-way valve 6 is powered off, the flow direction of the refrigerant is as shown in figure 3, a port D and a port E of the first four-way valve 6 are communicated, the exhausted high-temperature refrigerant enters the indoor machine heat exchanger through the first four-way valve 6 to be condensed and release heat, enters the first outdoor heat exchanger 3 after being throttled by the second throttling element 8 and the first throttling element 7 to be evaporated and then returns to the suction port of the compressor 1; and a port D and a port C of the second four-way valve 6 are communicated, and a high-temperature exhaust refrigerant of the compressor enters the second outdoor heat exchanger 4 to be condensed and defrosted, is throttled by the first throttling element 7, enters the first outdoor heat exchanger 3 to be evaporated and then returns to an air suction port of the compressor 1.
The system further comprises: the first check valve 9 is positioned between the port E of the second four-way valve 6 and the indoor heat exchanger 2 and used for preventing the refrigerant from flowing back to the second four-way valve 6 from the indoor heat exchanger 2; and the second check valve 10 is located between the port E of the first four-way valve 5 and the second outdoor heat exchanger 4, and is used for preventing the refrigerant from flowing back to the second outdoor heat exchanger 4 from the first four-way valve 5.
Through this system, the implementation and the operation of this scheme can be satisfied to the outer machine of current unit formula air conditioner double fan blade, for guaranteeing to change the smoothness of frost process, the condenser middle part has the water collector, guarantees to change the frost and discharges smoothly after the liquid water, simultaneously, avoids freezing for satisfying under the abominable operating mode, still can place electric heating band, and supplementary chassis ice melting.
The states of the indoor heat exchanger and the outdoor heat exchanger in the complete heating mode are shown in fig. 4, the indoor heat exchanger is a condensation section, and the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 are evaporation sections. The states of the indoor heat exchanger and the outdoor heat exchanger in the continuous heating and defrosting mode are shown in fig. 5, the indoor heat exchanger is a condensation section, the first outdoor heat exchanger 3 is a condensation section, and the second outdoor heat exchanger 4 is an evaporation section. Another state of the indoor heat exchanger and the outdoor heat exchanger in the continuous heating and defrosting mode is shown in fig. 6, the indoor heat exchanger is a condensation section, the first outdoor heat exchanger 3 is an evaporation section, and the second outdoor heat exchanger 4 is a condensation section.
When continuous heating defrosting, firstly, the upper half section is a condensation section for defrosting, the lower half section is an evaporation section, and then the four-way valve is reversed again, and is replaced by the upper half section for evaporation and the lower half section for condensation defrosting. And after defrosting is finished, all the external machine heat exchangers are used in the evaporation section.
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 (7)
1. An air conditioning assembly, comprising: the outdoor heat exchanger comprises a compressor (1), an indoor heat exchanger (2), a first outdoor heat exchanger (3) and a second outdoor heat exchanger (4), a first four-way valve (5) and a second four-way valve (6), a first throttling element (7) and a second throttling element (8);
wherein a first end of the first outdoor heat exchanger (3) is connected with the compressor (1) and the second four-way valve (6) through the first four-way valve (5), and a second end of the first outdoor heat exchanger (3) is connected with the second throttling element (8) through the first throttling element (7);
a first end of the second outdoor heat exchanger (4) is connected with the compressor (1) and the indoor heat exchanger (2) through the second four-way valve (6), and a second end of the second outdoor heat exchanger (4) is connected with the second throttling element (8); wherein the second throttling element (8) is also connected with the indoor heat exchanger (2);
the first four-way valve (5) and the second four-way valve (6) are used for controlling the first outdoor heat exchanger (3) and the second outdoor heat exchanger (4) to defrost in turn.
2. Air conditioning assembly according to claim 1,
the port C of the first four-way valve (5) is connected with the first end of the first outdoor heat exchanger (3), the port D of the first four-way valve (5) is connected with the exhaust port of the compressor (1), the port S of the first four-way valve (5) is connected with the suction port of the compressor (1), and the port E of the first four-way valve (5) is connected with the first end of the second outdoor heat exchanger (4).
3. Air conditioning assembly according to claim 1,
the port C of the second four-way valve (6) is connected with the first end of the second outdoor heat exchanger (4) and the port E of the first four-way valve (5), the port D of the second four-way valve (6) is connected with the exhaust port of the compressor (1), the port S of the second four-way valve (6) is connected with the suction port of the compressor (1), and the port E of the first four-way valve (5) is connected with the first end of the indoor heat exchanger (2).
4. Air conditioning assembly according to claim 1, characterized in that the operating modes of the air conditioning assembly comprise at least a full heating mode;
in the complete heating mode, the first four-way valve (5) and the second four-way valve (6) are both electrified, and the first outdoor heat exchanger (3) and the second outdoor heat exchanger (4) are both used as evaporators for heat exchange.
5. The air conditioning assembly as set forth in claim 1, wherein the operating modes of the air conditioning assembly include at least a continuous heating and defrosting mode;
in the continuous heating and defrosting mode, the first four-way valve (5) is powered off and the second four-way valve (6) is powered on, so that the first outdoor heat exchanger (3) is defrosted, or the first four-way valve (5) is powered on and the second four-way valve (6) is powered off, so that the second outdoor heat exchanger (4) is defrosted.
6. The air conditioning assembly as set forth in claim 1, further comprising:
the first check valve (9) is positioned between the E port of the second four-way valve (6) and the indoor heat exchanger (2) and is used for preventing the refrigerant from flowing back to the second four-way valve (6) from the indoor heat exchanger (2);
and the second one-way valve (10) is positioned between the E port of the first four-way valve (5) and the second outdoor heat exchanger (4) and is used for preventing the refrigerant from reversely flowing to the second outdoor heat exchanger (4) from the first four-way valve (5).
7. Air conditioning assembly according to claim 1, characterized in that the lower part of said first (3) and second (4) outdoor heat exchangers comprises a water pan for containing defrosting water and an electric heating belt for assisting defrosting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376426.8U CN211876411U (en) | 2020-03-23 | 2020-03-23 | Air conditioning unit capable of continuously heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376426.8U CN211876411U (en) | 2020-03-23 | 2020-03-23 | Air conditioning unit capable of continuously heating |
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| CN211876411U true CN211876411U (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322784A (en) * | 2020-03-23 | 2020-06-23 | 珠海格力电器股份有限公司 | Air conditioning unit capable of continuously heating and control method thereof |
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2020
- 2020-03-23 CN CN202020376426.8U patent/CN211876411U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322784A (en) * | 2020-03-23 | 2020-06-23 | 珠海格力电器股份有限公司 | Air conditioning unit capable of continuously heating and control method thereof |
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