CN209726364U - Heat pump system, air-conditioning, outdoor unit - Google Patents
Heat pump system, air-conditioning, outdoor unit Download PDFInfo
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- CN209726364U CN209726364U CN201920362679.7U CN201920362679U CN209726364U CN 209726364 U CN209726364 U CN 209726364U CN 201920362679 U CN201920362679 U CN 201920362679U CN 209726364 U CN209726364 U CN 209726364U
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- outdoor unit
- exchanging part
- heat exchanging
- frosting degree
- heat
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Abstract
The utility model provides a kind of heat pump system, air-conditioning, outdoor unit.Outdoor unit includes outdoor heat exchanger, the outdoor heat exchanger includes at least two heat exchanging part being arranged in parallel, a flow control device is provided between each heat exchanging part and compressor, and the aperture of the flow control device is directly proportional to the frosting degree in the heat exchanging part.Heat pump system provided by the utility model, air-conditioning, outdoor unit, the outdoor heat exchanger of outdoor unit is divide into upper part and lower part, and utilize the frosting degree of the corresponding heat exchanging part of air-flow voltage drop detection, the aperture of corresponding flow control device is adjusted according to frosting degree, to reach specific aim defrost, the reliability of defrost is improved, reduces the defrost time, energy consumption of the heat pump system in defrost is effectively reduced.
Description
Technical field
The utility model relates to frost-removal structure technical field, especially a kind of heat pump system, air-conditioning, outdoor unit.
Background technique
Air source heat pump is as a kind of efficient warming mode, by feat of its heating efficiency height, it is environmentally friendly the advantages that just
It is promoted on a large scale.But air source heat pump is in the process of running, when environment temperature is lower than 0 DEG C, moisture in air can be
Outdoor heat exchanger fin surface forms frost, and as the heat pump working time continues, frost layer can gradually thicken, the increasing of frost layer degree
Adding, which not only influences heat transfer, can also make flow section of the air between fin become smaller, so that heat pump heating effect significantly reduces.Cause
When this heat pump air conditioner uses in winter, how defrost is that an important link is current, right when unit enters the defrost stage
The upper-lower section of outdoor heat exchanger is all while the defrost of equality strength, but the upper and lower section frosting of outdoor heat exchanger may and it is uneven,
The cold medium flux of unit supply condenser upper-lower section is identical when defrost, if lower section frosting occur when frostless upper section, in this way
Defrost mode the idle work of compressor can be made to increase, so that increasing the accuracy of energy consumption and defrost cannot also ensure.
Utility model content
In order to solve the non-uniform technical problem of outdoor unit defrost, and provide a kind of heat pump system according to frosting situation defrost
System, air-conditioning, outdoor unit.
A kind of outdoor unit, including outdoor heat exchanger, the outdoor heat exchanger include at least two heat exchanging part being arranged in parallel,
Be provided with a flow control device between each heat exchanging part and compressor, and the aperture of the flow control device with
Frosting degree in the heat exchanging part is directly proportional.
The outdoor unit further includes frosting degree detecting mechanism, and frosting degree detecting mechanism is set at least two institutes
It states on the surface of heat exchanging part, and frosting degree detecting mechanism is electrically connected with the flow control device.
Frosting degree detecting mechanism includes the pressure sensor for detecting the heat exchanging part air-flow pressure drop.
It is N that N number of pressure sensor quantity is arranged in each heat exchanging part, and is obtained according to formula:
Wherein: B1 is the heat exchange area of heat exchanging part；
B is setting value.
Frosting degree detecting mechanism includes multiple for detecting the pressure sensor of the heat exchanging part air-flow pressure drop, institute
There is the pressure sensor to be set on the outside windward side of the corresponding heat exchanging part.
All pressure sensors are uniformly distributed.
The outdoor unit further includes control mechanism, and the control mechanism extracts the data of frosting degree detecting mechanism,
And the aperture of the corresponding flow control device is controlled using the data.
The distribution up and down along the vertical direction of two heat exchanging part.
A kind of heat pump system, including above-mentioned outdoor unit.
A kind of air-conditioning, including above-mentioned outdoor unit.
A kind of control method of above-mentioned outdoor unit, comprising:
The frosting degree D of S1, each heat exchanging part of detection；
S2, the aperture X for adjusting the flow control device in real time according to the frosting degree.
Frosting degree detecting mechanism includes multiple pressure sensors, and all pressure sensors are uniformly distributed in pair
On the outer surface for the heat exchanging part answered, and in step sl, all pressure sensings in the same heat exchanging part are detected
The pressure drop data of device obtains the frosting degree.
It in step sl further include that the detection cycle of frosting degree detecting mechanism is T.
Further include in step sl, set frosting temperature t0, detect the outdoor unit local environment temperature t1, compare t1 and
T0, and detection cycle is corrected according to the comparison result of t1 and t0.
In the detection cycle for correcting frosting degree detecting mechanism according to the comparison result of t1 and t0, comprising:
If t1 > t0, the detection cycle T=k1t1；
If t1≤t0, the detection cycle T=k2t1；
K1 and k2 is constant value, and k1 ≠ k2.
The electric current for extracting the corresponding pressure sensor believes the aperture that the electric current is converted into flow control device
Number, and adjust using the opening amount signal aperture of the corresponding flow control device.
It in step s 2, further include setting the first frosting degree value D1 and the second frosting degree value D2, D2 > D1 > 0, to D
It is compared with D1 and D2, and adjusts the aperture X of the flow control device according to comparison result.
D is being compared with D1 and D2, and is being adjusted according to comparison result in the aperture X of the flow control device (2),
Further include:
As D < D1, X=0；
As D1≤D < D2, X=q1*D；
As D > D2, X=q2*D；
Wherein q1 and q2 is constant, and q1 ≠ q2.
The outdoor heat exchanger of outdoor unit is divided into two up and down by heat pump system provided by the utility model, air-conditioning, outdoor unit
Point, and using the frosting degree of the corresponding heat exchanging part of air-flow voltage drop detection, corresponding flow is adjusted according to frosting degree and adjusts machine
The aperture of structure improves the reliability of defrost to reach specific aim defrost, reduces the defrost time, heat pump system is effectively reduced and exists
Energy consumption when defrost.
Detailed description of the invention
Fig. 1 is the structural representation of the heat pump system of the embodiment of heat pump system provided by the utility model, air-conditioning, outdoor unit
Figure；
In figure:
1, heat exchanging part；2, flow control device；3, pressure sensor.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The present invention will be further described in detail for example.It should be appreciated that specific embodiment described herein is only used for explaining this
Utility model is not used to limit the utility model.
Outdoor unit as shown in Figure 1, including outdoor heat exchanger, the outdoor heat exchanger include at least two be arranged in parallel
Heat exchanging part 1 is provided with a flow control device 2 between each heat exchanging part 1 and compressor, and the flow adjusts machine
The aperture of structure 2 is directly proportional to the frosting degree in the heat exchanging part, and the aperture of flow control device 2 is adjusted using frosting degree,
The flow for the high temperature and pressure refrigerant for entering corresponding heat exchanging part 1 is controlled, the knot of the flow of refrigerant with corresponding heat exchanging part 1 is made
White degree matches, and carries out accurate defrost, to reduce the defrost time, improves the reliability of defrost, reduces the defrost time, effectively
Reduce energy consumption of the heat pump system in defrost.
The outdoor unit further includes frosting degree detecting mechanism, and frosting degree detecting mechanism is set at least two institutes
It states on the surface of heat exchanging part, and frosting degree detecting mechanism is electrically connected with the flow control device, utilizes frosting degree
Frosting degree detects in testing agency, to adjust the aperture of flow control device.
Frosting degree detecting mechanism includes the pressure sensor for detecting the heat exchanging part air-flow pressure drop.
It is N that N number of pressure sensor quantity is arranged in each heat exchanging part, and is obtained according to formula:
Wherein: B1 is the heat exchange area of heat exchanging part；
B is setting value.
Frosting degree detecting mechanism includes multiple for detecting the pressure sensor 3 of the 1 air-flow pressure drop of heat exchanging part,
All pressure sensors 3 are set on the outside windward side of the corresponding heat exchanging part 1.
All pressure sensors 3 be uniformly distributed namely each frosting degree detecting mechanism included by own
Pressure sensor 3 is arranged in the heat exchanging part of frosting degree detecting mechanism setting, and air flows through pressure when outdoor heat exchanger
Power drop is related with frosting degree, and the pressure sensor 3 on heat exchanger carries out the degree of frosting by the size of induction pressure
Judgement, exists between frosting degree (D) and pressure drop (P): D=y*P, (y ≠ 0 is related coefficient).
The outdoor unit further includes control mechanism, and the control mechanism extracts the data of frosting degree detecting mechanism,
And the aperture of the corresponding flow control device 2 is controlled using the data, the data include the degree of frosting, pressure drop etc.
Data, between aperture (X) and frosting degree (D): X=q1*D (D1≤D < D2, D1 > 0), X=q2*D (D > D2).
It is that gradually the frosting degree of frosting namely its underpart is greater than from the bottom to top since outdoor heat exchanger is in frosting
Or the frosting degree much larger than top, therefore the distribution up and down along the vertical direction by two heat exchanging part.
A kind of heat pump system, including above-mentioned outdoor unit.
A kind of air-conditioning, including above-mentioned outdoor unit.
A kind of control method of above-mentioned outdoor unit, comprising:
The frosting degree of S1, each heat exchanging part 1 of detection, wherein the result of detection frosting degree can be passed according to pressure
The pressure drop that sensor 3 detects carries out conversion and obtains；
S2, the aperture for adjusting the flow control device in real time according to the frosting degree.
Frosting degree detecting mechanism includes multiple pressure sensors 3, and all pressure sensors 3 are uniformly distributed in
On the outer surface of the corresponding heat exchanging part 1, and in step sl, all pressure in the same heat exchanging part 1 are detected
The pressure drop data of sensor 3 obtains the frosting degree, wherein being averaged for the pressure drop data of all pressure sensors 3
Value, or the maximum value in all pressure drop datas.
It in step sl further include that the detection cycle of frosting degree detecting mechanism is T.
Further include in step sl, set frosting temperature t0, detect the outdoor unit local environment temperature t1, compare t1 and
T0, and detection cycle is corrected according to the comparison result of t1 and t0.
In the detection cycle for correcting frosting degree detecting mechanism according to the comparison result of t1 and t0, comprising:
If t1 > t0, the detection cycle T=k1t1；
If t1≤t0, the detection cycle T=k2t1；
K1 and k2 is constant value, and k1 ≠ k2, it is possible to reduce the time of defrost, and the energy of compressor can be reduced
Consumption is realized and is segmented accurate defrost.
The electric current for extracting the corresponding pressure sensor 3 believes the aperture that the electric current is converted into flow control device 2
Number, and adjust using the opening amount signal aperture of the corresponding flow control device 2.
Basic heat exchange area B is set, and determines the heat exchange area B1 of each heat exchanging part, the ratio according to B and B1 is true
The quantity N of level pressure force snesor.
In the quantity for determining pressure sensor according to the ratio of B and B1, further includes:
If B1 >=B, then N=(B1/B)+2；
If B1 < B, N=2.
It in step s 2, further include setting the first frosting degree value D1 and the second frosting degree value D2, D2 > D1 > 0, to D
It is compared with D1 and D2, and adjusts the aperture X of the flow control device 2 according to comparison result.
D is being compared with D1 and D2, and is being adjusted according to comparison result in the aperture X of the flow control device 2, also
Include:
As D < D1, X=0；
As D1≤D < D2, X=q1*D；
As D > D2, X=q2*D；
Wherein q1 and q2 is constant, and q1 ≠ q2.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of outdoor unit, including outdoor heat exchanger, it is characterised in that: the outdoor heat exchanger includes at least two be arranged in parallel
A heat exchanging part is provided with a flow control device (2), and the flow between each heat exchanging part (1) and compressor
The aperture of regulating mechanism (2) is directly proportional to the frosting degree on the heat exchanging part (1).
2. outdoor unit according to claim 1, it is characterised in that: the outdoor unit further includes frosting degree detecting mechanism,
Frosting degree detecting mechanism is set on the surface of at least two heat exchanging part (1), and the frosting degree detecting machine
Structure is electrically connected with the flow control device (2).
3. outdoor unit according to claim 2, it is characterised in that: frosting degree detecting mechanism includes for detecting
State the pressure sensor (3) of heat exchanging part (1) air-flow pressure drop.
4. outdoor unit according to claim 3, it is characterised in that: N number of pressure is arranged in each heat exchanging part and passes
Sensor quantity, N are obtained according to formula:
Wherein: B1 is the heat exchange area of heat exchanging part；
B is setting value.
5. outdoor unit according to claim 3, it is characterised in that: all pressure sensors (3) are set to described change
On the outside windward side of hot portion (1).
6. outdoor unit according to claim 3, it is characterised in that: all pressure sensors (3) are uniformly distributed.
7. outdoor unit according to claim 2, it is characterised in that: the outdoor unit further includes control mechanism, the control
Mechanism extracts the data of frosting degree detecting mechanism, and controls the corresponding flow control device using the data
(2) aperture.
8. outdoor unit according to claim 1, it is characterised in that: the distribution up and down along the vertical direction of two heat exchanging part.
9. a kind of heat pump system, it is characterised in that: including outdoor unit described in any item of the claim 1 to 8.
10. a kind of air-conditioning, it is characterised in that: including outdoor unit described in any item of the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920362679.7U CN209726364U (en) | 2019-03-20 | 2019-03-20 | Heat pump system, air-conditioning, outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920362679.7U CN209726364U (en) | 2019-03-20 | 2019-03-20 | Heat pump system, air-conditioning, outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209726364U true CN209726364U (en) | 2019-12-03 |
Family
ID=68687622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920362679.7U Active CN209726364U (en) | 2019-03-20 | 2019-03-20 | Heat pump system, air-conditioning, outdoor unit |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798600A (en) * | 2019-03-20 | 2019-05-24 | 珠海格力电器股份有限公司 | The control method of heat pump system, air-conditioning, outdoor unit and outdoor unit |
| CN114110929A (en) * | 2021-11-12 | 2022-03-01 | 珠海格力电器股份有限公司 | Defrosting control method of air conditioner and air conditioner using same |
-
2019
- 2019-03-20 CN CN201920362679.7U patent/CN209726364U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798600A (en) * | 2019-03-20 | 2019-05-24 | 珠海格力电器股份有限公司 | The control method of heat pump system, air-conditioning, outdoor unit and outdoor unit |
| CN114110929A (en) * | 2021-11-12 | 2022-03-01 | 珠海格力电器股份有限公司 | Defrosting control method of air conditioner and air conditioner using same |
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