CN105115209A - Air cooled heat pump cold and hot water unit and defrosting control method thereof - Google Patents
Air cooled heat pump cold and hot water unit and defrosting control method thereof Download PDFInfo
- Publication number
- CN105115209A CN105115209A CN201510617490.4A CN201510617490A CN105115209A CN 105115209 A CN105115209 A CN 105115209A CN 201510617490 A CN201510617490 A CN 201510617490A CN 105115209 A CN105115209 A CN 105115209A
- Authority
- CN
- China
- Prior art keywords
- air
- heating system
- water heating
- heat exchanger
- inlet temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses an air cooled heat pump cold and hot water unit and a defrosting control method thereof. The air cooled heat pump cold and hot water unit comprises a first heating water system and a second heating water system. A first air conditioner heat exchanger in the first heating water system and a second air conditioner heat exchanger in the second heating water system share the same draught fan. The method includes the following steps that the outdoor environment temperature T4, the temperature T3a and the temperature T3b are detected in real time; delta Ta of the first air conditioner heat exchanger is obtained according to T3a, and delta Tb of the second air conditioner heat exchanger is obtained according to T3b; when it is judged that the air cooled heat pump cold and hot water unit operates in an alternate defrosting mode according to T4, the first heating water system and the second heating water system are controlled to conduct alternate heating operation according to delta Ta and delta Tb, and the air conditioner heat exchanger which is not in the working state is defrosted through continuous operation of the draught fan. According to the method, defrosting is conducted through continuous operation of the draught fan due to switching between the systems, the heating effect of the air cooled heat pump cold and hot water unit is improved, and the user experience is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of defrosting control method of air-cooled heat pump cold-hot water machine and a kind of air-cooled heat pump cold-hot water machine.
Background technology
For air heat pump type air-conditioning, when heating operation, need to absorb heat from air, but the change of environment temperature, domestic hot water side heat exchanger frosting can be caused, air heat pump type air-conditioning heating ability and efficiency are declined.In order to avoid heating effect is deteriorated, air heat pump type air-conditioning can run defrost pattern and defrost, and defrost pattern can not heat, and finally has a great impact the heating effect of entirety.
In correlation technique, when air heat pump type air-conditioning is in defrost process, the commutation of compressor operating, cross valve, simultaneously blower fan shut down, air heat pump type air-conditioning switches to refrigerating operaton, carries out defrost, after frost all melts by high temperature refrigerant, exit defrost, then proceed to heat.It can thus be appreciated that defrost process is process of refrigerastion, can impact, thus affect complete machine capability, affect Consumer's Experience to water temperature.
Summary of the invention
The present invention is intended to solve one of technical problem in above-mentioned technology at least to a certain extent.For this reason, one object of the present invention is the defrosting control method proposing a kind of air-cooled heat pump cold-hot water machine, do not need to control air-cooled heat pump cold-hot water machine and be converted to refrigerating operaton and blowing-out machine to carry out defrost, but carry out defrost by controlling to switch to utilize the continuation of blower fan to run between the first water heating system and the second water heating system, improve the heating effect of air-cooled heat pump cold-hot water machine, improve Consumer's Experience.
Another object of the present invention is to propose a kind of air-cooled heat pump cold-hot water machine.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of defrosting control method of air-cooled heat pump cold-hot water machine, described air-cooled heat pump cold-hot water machine comprises the first water heating system and the second water heating system, wherein, the second air-condition heat exchanger in the first air-condition heat exchanger in described first water heating system and described second water heating system shares a blower fan, described defrosting control method comprises the following steps: detect outdoor environment temperature T4 in real time, and detect the inlet temperature T3a of described first air-condition heat exchanger and the inlet temperature T3b of described second air-condition heat exchanger in real time, obtain the inlet temperature rate of change △ Ta of described first air-condition heat exchanger according to the inlet temperature T3a of described first air-condition heat exchanger detected in real time, and obtain the inlet temperature rate of change △ Tb of described second air-condition heat exchanger according to the inlet temperature T3b of described second air-condition heat exchanger detected in real time, when described air-cooled heat pump cold-hot water machine enters defrost pattern, judge whether that controlling described air-cooled heat pump cold-hot water machine runs in rotation defrost mode according to described outdoor environment temperature T4, if described air-cooled heat pump cold-hot water machine runs in rotation defrost mode, then control described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, carry out defrost to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of described blower fan.
According to the defrosting control method of the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, real-time detection outdoor environment temperature T4, and detect the inlet temperature T3a of the first air-condition heat exchanger and the inlet temperature T3b of the second air-condition heat exchanger in real time, then when the outdoor environment temperature T4 by detecting in real time judges that air-cooled heat pump cold-hot water machine runs in rotation defrost mode, according to the inlet temperature rate of change △ Ta of the first air-condition heat exchanger with the inlet temperature rate of change △ Tb of the second air-condition heat exchanger controls the first water heating system and the second water heating system replaces heating operation, defrost is carried out to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of blower fan, thus do not need to control air-cooled heat pump cold-hot water machine and be converted to refrigerating operaton and blowing-out machine to carry out defrost, greatly improve the heating effect of air-cooled heat pump cold-hot water machine, improve Consumer's Experience.
According to one embodiment of present invention, when described air-cooled heat pump cold-hot water machine enters defrost pattern, wherein, if described outdoor environment temperature T4 is greater than the first preset temperature, then controls described air-cooled heat pump cold-hot water machine and run in rotation defrost mode; If described outdoor environment temperature T4 is less than or equal to described first preset temperature, then controls described air-cooled heat pump cold-hot water machine and run with conventional Defrost mode.
According to one embodiment of present invention, described first water heating system is controlled and described second water heating system replaces heating operation according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger, specifically comprise: a, the compressor controlled in described first water heating system are started shooting to make described first water heating system heating operation, and obtain the accumulation heat pamp of described first water heating system after described first water heating system heating operation; B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of described first water heating system reaches very first time threshold value or described first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in described first water heating system, described blower fan continues to run, and the compressor start controlled in described second water heating system is to make described second water heating system heating operation, and obtain the accumulation heat pamp of described second water heating system after described second water heating system heating operation; C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of described second water heating system reaches the second time threshold or described second air-condition heat exchanger is more than or equal to described first preset value; control the compressor shutdown in described second water heating system; described blower fan continues to run, and returns execution step a.
According to one embodiment of present invention, described first water heating system is controlled and described second water heating system replaces heating operation according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger, specifically also comprise: when the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, control described first water heating system and continue heating operation.
According to one embodiment of present invention, described first water heating system is controlled and described second water heating system replaces heating operation according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger, specifically also comprise: when the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, control described second water heating system and continue heating operation.
For achieving the above object, a kind of air-cooled heat pump cold-hot water machine that the present invention's another aspect embodiment proposes, comprise: the first water heating system and the second water heating system, the second air-condition heat exchanger in the first air-condition heat exchanger in described first water heating system and described second water heating system shares a blower fan, first temperature detecting module, for detecting outdoor environment temperature T4 in real time, second temperature detecting module, for detecting the inlet temperature T3a of described first air-condition heat exchanger in real time, 3rd temperature detecting module, for detecting the inlet temperature T3b of described second air-condition heat exchanger in real time, control module, for obtaining the inlet temperature rate of change △ Ta of described first air-condition heat exchanger according to the inlet temperature T3a of described first air-condition heat exchanger detected in real time, and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is obtained according to the inlet temperature T3b of described second air-condition heat exchanger detected in real time, and judge whether that controlling described air-cooled heat pump cold-hot water machine runs in rotation defrost mode when described air-cooled heat pump cold-hot water machine enters defrost pattern according to described outdoor environment temperature T4, wherein, if described air-cooled heat pump cold-hot water machine runs in rotation defrost mode, described control module controls described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, defrost is carried out to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of described blower fan.
According to the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, without the need to carrying out defrost by conversion refrigerating operaton and blowing-out machine, but by switching between control first water heating system and the second water heating system, the continuation of the blower fan of utilization own runs, the heat making the frost be not on the air-condition heat exchanger of heat exchange duty absorb surrounding environment carries out defrost, thus reduce and heat decay when heating defrost, greatly improve heating effect, improve Consumer's Experience.
According to one embodiment of present invention, when described air-cooled heat pump cold-hot water machine enters defrost pattern, wherein, if described outdoor environment temperature T4 is greater than the first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs in rotation defrost mode; If described outdoor environment temperature T4 is less than or equal to described first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs with conventional Defrost mode.
According to one embodiment of present invention, described control module realizes the described first water heating system of control by following control flow and described second water heating system replaces heating operation: a, the compressor controlled in described first water heating system are started shooting to make described first water heating system heating operation, and obtain the accumulation heat pamp of described first water heating system after described first water heating system heating operation; B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of described first water heating system reaches very first time threshold value or described first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in described first water heating system, described blower fan continues to run, and the compressor start controlled in described second water heating system is to make described second water heating system heating operation, and obtain the accumulation heat pamp of described second water heating system after described second water heating system heating operation; C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of described second water heating system reaches the second time threshold or described second air-condition heat exchanger is more than or equal to described first preset value; control the compressor shutdown in described second water heating system; described blower fan continues to run, and returns execution step a.
According to one embodiment of present invention, when the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, described control module controls described first water heating system and continues heating operation.
According to one embodiment of present invention, when the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, described control module controls described second water heating system and continues heating operation.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of air-cooled heat pump cold-hot water machine according to an embodiment of the invention;
Fig. 2 is the flow chart of the defrosting control method of air-cooled heat pump cold-hot water machine according to the embodiment of the present invention;
Fig. 3 is defrosting control flow chart when air-cooled heat pump cold-hot water machine runs in rotation defrost mode according to an embodiment of the invention; And
Fig. 4 is that air-cooled heat pump cold-hot water machine receives the control flow chart after heating start-up command according to an embodiment of the invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Defrosting control method and the air-cooled heat pump cold-hot water machine of the air-cooled heat pump cold-hot water machine proposed according to the embodiment of the present invention are described with reference to the accompanying drawings.
As shown in Figure 1, air-cooled heat pump cold-hot water machine comprises the first water heating system and the second water heating system according to an embodiment of the invention, wherein, the first air-condition heat exchanger in the first water heating system and the second air-condition heat exchanger in the second water heating system share a blower fan.
As shown in Figure 2, the defrosting control method of this air-cooled heat pump cold-hot water machine comprises the following steps:
S1, detects outdoor environment temperature T4 in real time, and detects the inlet temperature T3a of the first air-condition heat exchanger and the inlet temperature T3b of the second air-condition heat exchanger in real time.
Wherein, detect outdoor environment temperature T4 by outdoor temperature sensor, and the temperature sensor by being arranged on the first air-condition heat exchanger import department detects T3a and is arranged on the temperature sensor detection T3b of the second air-condition heat exchanger import department.
S2, obtain the inlet temperature rate of change △ Ta of the first air-condition heat exchanger according to the inlet temperature T3a of the first air-condition heat exchanger detected in real time, and obtain the inlet temperature rate of change △ Tb of the second air-condition heat exchanger according to the inlet temperature T3b of the second air-condition heat exchanger detected in real time.
Namely say, △ Ta is the rate of decay of the inlet temperature of the first air-condition heat exchanger, and △ Tb is the rate of decay of the inlet temperature of the second air-condition heat exchanger.
According to outdoor environment temperature T4, S3, when air-cooled heat pump cold-hot water machine enters defrost pattern, judges whether that controlling air-cooled heat pump cold-hot water machine runs in rotation defrost mode.
According to one embodiment of present invention, when air-cooled heat pump cold-hot water machine enters defrost pattern, wherein, if outdoor environment temperature T4 is greater than the first preset temperature, then controls air-cooled heat pump cold-hot water machine and run in rotation defrost mode; If outdoor environment temperature T4 is less than or equal to the first preset temperature, then controls air-cooled heat pump cold-hot water machine and run with conventional Defrost mode.
Wherein, it should be noted that, the first preset temperature can be demarcated according to the concrete condition of air-cooled heat pump cold-hot water machine.And, conventional Defrost mode refer to air-cooled heat pump cold-hot water machine still with normal refrigerating operaton and blowing-out machine to carry out defrost, namely say, when outdoor environment temperature T4 is lower, air-cooled heat pump cold-hot water machine still carries out defrost by normal refrigerating operaton and blowing-out machine.
S4, if air-cooled heat pump cold-hot water machine runs in rotation defrost mode, then according to the inlet temperature rate of change △ Ta of the first air-condition heat exchanger with the inlet temperature rate of change △ Tb of the second air-condition heat exchanger controls the first water heating system and the second water heating system replaces heating operation, to make the air-condition heat exchanger not being in heat exchange duty carry out defrost by the continuous service of blower fan.
That is, the defrosting control method of the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, when control air-cooled heat pump cold-hot water machine runs in rotation defrost mode, without the need to carrying out defrost by air-cooled heat pump cold-hot water machine conversion refrigerating operaton and blowing-out machine, but by switching between control first water heating system and the second water heating system, the continuation of the blower fan of utilization own runs, the heat making the frost be not on the air-condition heat exchanger of heat exchange duty absorb surrounding environment carries out defrost, thus reduce and heat decay when heating defrost, greatly improve heating effect, improve Consumer's Experience.
According to one embodiment of present invention, according to the inlet temperature rate of change △ Ta of the first air-condition heat exchanger with the inlet temperature rate of change △ Tb of the second air-condition heat exchanger controls the first water heating system and the second water heating system replaces heating operation, specifically comprise: a, the compressor controlled in the first water heating system are started shooting to make the first water heating system heating operation, and obtain the accumulation heat pamp of the first water heating system after the first water heating system heating operation; B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of the first water heating system reaches very first time threshold value or the first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in the first water heating system, blower fan continues to run, and the compressor start controlled in the second water heating system is to make the second water heating system heating operation, and obtain the accumulation heat pamp of the second water heating system after the second water heating system heating operation; C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of the second water heating system reaches the second time threshold or the second air-condition heat exchanger is more than or equal to the first preset value; control the compressor shutdown in the second water heating system; blower fan continues to run, and returns execution step a.
Particularly, as shown in Figure 3, defrosting control flow process when air-cooled heat pump cold-hot water machine runs in rotation defrost mode comprises the following steps:
S301, air-cooled heat pump cold-hot water machine runs with heating mode after receiving start-up command.
S302, the compressor controlled in the first water heating system such as A system is opened to make the first water heating system heating operation.
S303, the first water heating system such as A system carries out frosting accumulation timing, and obtains accumulation heat pamp ta.
S304, judges whether the inlet temperature rate of change △ Ta of the first air-condition heat exchanger of Real-time Obtaining is more than or equal to the first preset value Tv.If so, step S306 is performed; If not, step S305 is performed.Wherein, the first preset value Tv demarcates as the case may be.
S305, judges whether accumulation heat pamp ta reaches very first time threshold value.If so, then step S306 is performed; If not, then return step S303, namely say, when the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, control described first water heating system and continue heating operation.Wherein, very first time threshold value can set according to actual conditions.
S306, controls the compressor shutdown in the first water heating system, keeps blower fan to continue to run, and the compressor controlled in the second water heating system such as B system is opened to make the second water heating system heating operation.
S307, the second water heating system such as B system carries out frosting accumulation timing, and obtains accumulation heat pamp tb.
S308, judges whether the inlet temperature rate of change △ Tb of the second air-condition heat exchanger of Real-time Obtaining is more than or equal to the first preset value Tv.If so, step S310 is performed; If not, step S309 is performed.
S309, judges whether accumulation heat pamp tb reaches the second time threshold.If so, then step S310 is performed; If not, then return step S307, namely say, when the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, control described second water heating system and continue heating operation.Wherein, the second time threshold can set according to actual conditions equally.
S310, controls the compressor shutdown in the second water heating system, keeps blower fan to continue to run, then returns and perform step S302.
It can thus be appreciated that, in an embodiment of the present invention, when controlling air-cooled heat pump cold-hot water machine and running in rotation defrost mode, by controlling to switch in turn between the first water heating system and the second water heating system, the continuation of the blower fan of utilization own runs, and the heat making the frost be not on the air-condition heat exchanger of heat exchange duty absorb surrounding environment carries out defrost, thus reduces and heat decay when heating defrost, greatly improve heating effect, improve Consumer's Experience.
It should be noted that, in an embodiment of the present invention, as shown in Figure 4, comprise the following steps when air-cooled heat pump cold-hot water machine receives the control flow after heating start-up command:
S401, air-cooled heat pump cold-hot water machine runs with heating mode.
S402, judges whether air-cooled heat pump cold-hot water machine enters defrost pattern.If so, step S403 is performed; If not, step S404 is performed.
S403, judges whether outdoor environment temperature T4 is greater than the first preset temperature.If so, step S405 is performed; If not, step S406 is performed.
S404, air-cooled heat pump cold-hot water machine continues to run with heating mode.
S405, air-cooled heat pump cold-hot water machine runs in rotation defrost mode, until after defrost terminates, return step S402, continues to judge.
S406, air-cooled heat pump cold-hot water machine runs with conventional Defrost mode, until after defrost terminates, return step S402, continues to judge.
That is, air-cooled heat pump cold-hot water machine runs in rotation defrost mode and is only applicable to part outdoor environment temperature.
And, when air-cooled heat pump cold-hot water machine adopts rotation defrost mode to run, realize carrying out defrost by the mode of not blowing-out machine, cross valve commutation is not related in defrost process, so there will not be intermittent refrigeration (refrigeration defrost) and cause the fluctuating temperature of air-cooled heat pump cold-hot water machine, the heating effect of air-cooled heat pump cold-hot water machine also there will not be decay simultaneously, improves Consumer's Experience.
According to the defrosting control method of the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, real-time detection outdoor environment temperature T4, and detect the inlet temperature T3a of the first air-condition heat exchanger and the inlet temperature T3b of the second air-condition heat exchanger in real time, then when the outdoor environment temperature T4 by detecting in real time judges that air-cooled heat pump cold-hot water machine runs in rotation defrost mode, according to the inlet temperature rate of change △ Ta of the first air-condition heat exchanger with the inlet temperature rate of change △ Tb of the second air-condition heat exchanger controls the first water heating system and the second water heating system replaces heating operation, defrost is carried out to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of blower fan, thus do not need to control air-cooled heat pump cold-hot water machine and be converted to refrigerating operaton and blowing-out machine to carry out defrost, greatly improve the heating effect of air-cooled heat pump cold-hot water machine, improve Consumer's Experience.
In addition, a kind of air-cooled heat pump cold-hot water machine that the embodiment of the present invention also proposes comprises: the first water heating system and the second water heating system, the first temperature detecting module, the second temperature detecting module, the 3rd temperature detecting module and control module.
Wherein, as shown in Figure 1, first water heating system comprises compressor 11, delivery temperature switch 12, high-voltage switch gear 13, cross valve 14, low tension switch 15, low pressure fills with the 16, first air-condition heat exchanger 17, electric expansion valve 18, second water heating system comprises compressor 21, delivery temperature switch 22, high-voltage switch gear 23, cross valve 24, low tension switch 25, low pressure fill with the 26, second air-condition heat exchanger 27, electric expansion valve 28.And, first air-condition heat exchanger 17 and the second air-condition heat exchanger 27 share a blower fan 10, first water heating system and the second water heating system also share hot water side heat exchanger and double-tube heat exchanger 20, simultaneously, double-tube heat exchanger 20 the equal set temperature sensor of water outlet pipe part and water inlet pipe place (such as water inlet pipe place set temperature sensor 101 with detect water inlet water temperature), in water outlet pipe part, flow sensor is set, and between air-condition heat exchanger 17 and electric expansion valve 18 set temperature sensor 19, set temperature sensor 29 between air-condition heat exchanger 27 and electric expansion valve 28.Temperature sensor 19 is for detecting the inlet temperature T3a of the first air-condition heat exchanger in real time, and temperature sensor 29 is for detecting the inlet temperature T3b of the second air-condition heat exchanger in real time.
In an embodiment of the present invention, first temperature detecting module such as outdoor temperature sensor is used for detecting outdoor environment temperature T4 in real time, second temperature detecting module such as temperature sensor 19 is for detecting the inlet temperature T3a of described first air-condition heat exchanger in real time, 3rd temperature detecting module such as temperature sensor 29 is for detecting the inlet temperature T3b of described second air-condition heat exchanger in real time, control module is used for the inlet temperature rate of change △ Ta obtaining described first air-condition heat exchanger according to the inlet temperature T3a of described first air-condition heat exchanger detected in real time, and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is obtained according to the inlet temperature T3b of described second air-condition heat exchanger detected in real time, and judge whether that controlling described air-cooled heat pump cold-hot water machine runs in rotation defrost mode when described air-cooled heat pump cold-hot water machine enters defrost pattern according to described outdoor environment temperature T4, wherein, if described air-cooled heat pump cold-hot water machine runs in rotation defrost mode, described control module controls described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, defrost is carried out to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of described blower fan.
Further, when described air-cooled heat pump cold-hot water machine enters defrost pattern, wherein, if described outdoor environment temperature T4 is greater than the first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs in rotation defrost mode; If described outdoor environment temperature T4 is less than or equal to described first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs with conventional Defrost mode.
Wherein, it should be noted that, the first preset temperature can be demarcated according to the concrete condition of air-cooled heat pump cold-hot water machine.And, conventional Defrost mode refer to air-cooled heat pump cold-hot water machine still with normal refrigerating operaton and blowing-out machine to carry out defrost, namely say, when outdoor environment temperature T4 is lower, air-cooled heat pump cold-hot water machine still carries out defrost by normal refrigerating operaton and blowing-out machine.
Particularly, according to one embodiment of present invention, described control module replaces heating operation by the following control flow realization described first water heating system of control and described second water heating system:
A, the compressor controlled in described first water heating system are started shooting to make described first water heating system heating operation, and obtain the accumulation heat pamp of described first water heating system after described first water heating system heating operations;
B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of described first water heating system reaches very first time threshold value or described first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in described first water heating system, described blower fan continues to run, and the compressor start controlled in described second water heating system is to make described second water heating system heating operation, and obtain the accumulation heat pamp of described second water heating system after described second water heating system heating operation;
C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of described second water heating system reaches the second time threshold or described second air-condition heat exchanger is more than or equal to described first preset value; control the compressor shutdown in described second water heating system; described blower fan continues to run, and returns execution step a.
Wherein, when the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, described control module controls described first water heating system and continues heating operation.When the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, described control module controls described second water heating system and continues heating operation.
In sum, in an embodiment of the present invention, when air-cooled heat pump cold-hot water machine runs in rotation defrost mode, by controlling to switch in turn between the first water heating system and the second water heating system, the continuation of the blower fan of utilization own runs, and the heat making the frost be not on the air-condition heat exchanger of heat exchange duty absorb surrounding environment carries out defrost, thus reduces and heat decay when heating defrost, greatly improve heating effect, improve Consumer's Experience.
According to the air-cooled heat pump cold-hot water machine of the embodiment of the present invention, without the need to carrying out defrost by conversion refrigerating operaton and blowing-out machine, but by switching between control first water heating system and the second water heating system, the continuation of the blower fan of utilization own runs, the heat making the frost be not on the air-condition heat exchanger of heat exchange duty absorb surrounding environment carries out defrost, thus reduce and heat decay when heating defrost, greatly improve heating effect, improve Consumer's Experience.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. the defrosting control method of an air-cooled heat pump cold-hot water machine, it is characterized in that, described air-cooled heat pump cold-hot water machine comprises the first water heating system and the second water heating system, wherein, the second air-condition heat exchanger in the first air-condition heat exchanger in described first water heating system and described second water heating system shares a blower fan, and described defrosting control method comprises the following steps:
Real-time detection outdoor environment temperature T4, and detect the inlet temperature T3a of described first air-condition heat exchanger and the inlet temperature T3b of described second air-condition heat exchanger in real time;
Obtain the inlet temperature rate of change △ Ta of described first air-condition heat exchanger according to the inlet temperature T3a of described first air-condition heat exchanger detected in real time, and obtain the inlet temperature rate of change △ Tb of described second air-condition heat exchanger according to the inlet temperature T3b of described second air-condition heat exchanger detected in real time;
When described air-cooled heat pump cold-hot water machine enters defrost pattern, judge whether that controlling described air-cooled heat pump cold-hot water machine runs in rotation defrost mode according to described outdoor environment temperature T4;
If described air-cooled heat pump cold-hot water machine runs in rotation defrost mode, then control described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, carry out defrost to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of described blower fan.
2. the defrosting control method of air-cooled heat pump cold-hot water machine as claimed in claim 1, is characterized in that, when described air-cooled heat pump cold-hot water machine enters defrost pattern, wherein,
If described outdoor environment temperature T4 is greater than the first preset temperature, then controls described air-cooled heat pump cold-hot water machine and run in rotation defrost mode;
If described outdoor environment temperature T4 is less than or equal to described first preset temperature, then controls described air-cooled heat pump cold-hot water machine and run with conventional Defrost mode.
3. the defrosting control method of air-cooled heat pump cold-hot water machine as claimed in claim 1 or 2, it is characterized in that, control described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, specifically comprise:
A, the compressor controlled in described first water heating system are started shooting to make described first water heating system heating operation, and obtain the accumulation heat pamp of described first water heating system after described first water heating system heating operations;
B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of described first water heating system reaches very first time threshold value or described first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in described first water heating system, described blower fan continues to run, and the compressor start controlled in described second water heating system is to make described second water heating system heating operation, and obtain the accumulation heat pamp of described second water heating system after described second water heating system heating operation;
C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of described second water heating system reaches the second time threshold or described second air-condition heat exchanger is more than or equal to described first preset value; control the compressor shutdown in described second water heating system; described blower fan continues to run, and returns execution step a.
4. the defrosting control method of air-cooled heat pump cold-hot water machine as claimed in claim 3, it is characterized in that, control described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, specifically also comprise:
When the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, control described first water heating system and continue heating operation.
5. the defrosting control method of air-cooled heat pump cold-hot water machine as claimed in claim 3, it is characterized in that, control described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, specifically also comprise:
When the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, control described second water heating system and continue heating operation.
6. an air-cooled heat pump cold-hot water machine, is characterized in that, comprising:
First water heating system and the second water heating system, the second air-condition heat exchanger in the first air-condition heat exchanger in described first water heating system and described second water heating system shares a blower fan;
First temperature detecting module, for detecting outdoor environment temperature T4 in real time;
Second temperature detecting module, for detecting the inlet temperature T3a of described first air-condition heat exchanger in real time;
3rd temperature detecting module, for detecting the inlet temperature T3b of described second air-condition heat exchanger in real time;
Control module, for obtaining the inlet temperature rate of change △ Ta of described first air-condition heat exchanger according to the inlet temperature T3a of described first air-condition heat exchanger detected in real time, and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is obtained according to the inlet temperature T3b of described second air-condition heat exchanger detected in real time, and judge whether that controlling described air-cooled heat pump cold-hot water machine runs in rotation defrost mode when described air-cooled heat pump cold-hot water machine enters defrost pattern according to described outdoor environment temperature T4, wherein, if described air-cooled heat pump cold-hot water machine runs in rotation defrost mode, described control module controls described first water heating system according to the inlet temperature rate of change △ Tb of the inlet temperature rate of change △ Ta of described first air-condition heat exchanger and described second air-condition heat exchanger and described second water heating system replaces heating operation, defrost is carried out to be made the air-condition heat exchanger not being in heat exchange duty by the continuous service of described blower fan.
7. air-cooled heat pump cold-hot water machine as claimed in claim 6, is characterized in that, when described air-cooled heat pump cold-hot water machine enters defrost pattern, wherein,
If described outdoor environment temperature T4 is greater than the first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs in rotation defrost mode;
If described outdoor environment temperature T4 is less than or equal to described first preset temperature, described control module then controls described air-cooled heat pump cold-hot water machine and runs with conventional Defrost mode.
8. air-cooled heat pump cold-hot water machine as claimed in claims 6 or 7, is characterized in that, described control module realizes controlling described first water heating system by following control flow and described second water heating system replaces heating operation:
A, the compressor controlled in described first water heating system are started shooting to make described first water heating system heating operation, and obtain the accumulation heat pamp of described first water heating system after described first water heating system heating operations;
B, when the inlet temperature rate of change △ Ta that the accumulation heat pamp of described first water heating system reaches very first time threshold value or described first air-condition heat exchanger is more than or equal to the first preset value, control the compressor shutdown in described first water heating system, described blower fan continues to run, and the compressor start controlled in described second water heating system is to make described second water heating system heating operation, and obtain the accumulation heat pamp of described second water heating system after described second water heating system heating operation;
C, when the inlet temperature rate of change △ Tb that the accumulation heat pamp of described second water heating system reaches the second time threshold or described second air-condition heat exchanger is more than or equal to described first preset value; control the compressor shutdown in described second water heating system; described blower fan continues to run, and returns execution step a.
9. air-cooled heat pump cold-hot water machine as claimed in claim 8, it is characterized in that, when the accumulation heat pamp of described first water heating system does not reach described very first time threshold value and the inlet temperature rate of change △ Ta of described first air-condition heat exchanger is less than described first preset value, described control module controls described first water heating system and continues heating operation.
10. air-cooled heat pump cold-hot water machine as claimed in claim 8, it is characterized in that, when the accumulation heat pamp of described second water heating system does not reach described second time threshold and the inlet temperature rate of change △ Tb of described second air-condition heat exchanger is less than described first preset value, described control module controls described second water heating system and continues heating operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617490.4A CN105115209B (en) | 2015-09-23 | 2015-09-23 | Air-cooled heat pump cold-hot water machine and its defrosting control method |
| PCT/CN2016/096051 WO2017050073A1 (en) | 2015-09-23 | 2016-08-19 | Water chiller-heater unit of air cooled heat pump and defrosting control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617490.4A CN105115209B (en) | 2015-09-23 | 2015-09-23 | Air-cooled heat pump cold-hot water machine and its defrosting control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105115209A true CN105115209A (en) | 2015-12-02 |
| CN105115209B CN105115209B (en) | 2017-11-10 |
Family
ID=54663257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510617490.4A Active CN105115209B (en) | 2015-09-23 | 2015-09-23 | Air-cooled heat pump cold-hot water machine and its defrosting control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105115209B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928272A (en) * | 2016-04-20 | 2016-09-07 | 广东美的暖通设备有限公司 | Air conditioning system and defrosting method thereof |
| WO2017050073A1 (en) * | 2015-09-23 | 2017-03-30 | 广东美的暖通设备有限公司 | Water chiller-heater unit of air cooled heat pump and defrosting control method therefor |
| CN106642586A (en) * | 2016-12-29 | 2017-05-10 | 广东美的暖通设备有限公司 | Grading defrosting method and device for air cooled heat pump parallel-connection units |
| CN107388656A (en) * | 2017-06-13 | 2017-11-24 | 珠海格力电器股份有限公司 | The control method of unit, apparatus and system |
| CN110715482A (en) * | 2019-08-30 | 2020-01-21 | 浙江正泰能效科技有限公司 | Defrosting method of air source heat pump unit |
| CN112539521A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Air conditioner multi-split air conditioner and defrosting control method and device and storage medium thereof |
| CN113944987A (en) * | 2021-11-24 | 2022-01-18 | 广东美的制冷设备有限公司 | Control method, device and equipment of air conditioning system and storage medium |
| CN115405993A (en) * | 2022-09-01 | 2022-11-29 | 合肥美的暖通设备有限公司 | Air source heat pump heating system, defrosting control method and defrosting control device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332137A (en) * | 1979-10-22 | 1982-06-01 | Carrier Corporation | Heat exchange apparatus and method having two refrigeration circuits |
| CN1595014A (en) * | 2003-09-09 | 2005-03-16 | 三星电子株式会社 | Multiple-unit conditioning unit and controlling method thereof |
| CN101532747A (en) * | 2009-04-21 | 2009-09-16 | 四川长虹电器股份有限公司 | An air-conditioner |
| CN102840629A (en) * | 2011-06-20 | 2012-12-26 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system |
| CN103597291A (en) * | 2011-06-08 | 2014-02-19 | 三菱电机株式会社 | Refrigeration air-conditioning device |
| CN203893480U (en) * | 2014-06-19 | 2014-10-22 | 广东志高暖通设备股份有限公司 | Air cooling heat pump unit |
| CN104165486A (en) * | 2013-05-17 | 2014-11-26 | 广东美的集团芜湖制冷设备有限公司 | Defrosting method of air conditioner |
| CN104729029A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
-
2015
- 2015-09-23 CN CN201510617490.4A patent/CN105115209B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332137A (en) * | 1979-10-22 | 1982-06-01 | Carrier Corporation | Heat exchange apparatus and method having two refrigeration circuits |
| CN1595014A (en) * | 2003-09-09 | 2005-03-16 | 三星电子株式会社 | Multiple-unit conditioning unit and controlling method thereof |
| CN101532747A (en) * | 2009-04-21 | 2009-09-16 | 四川长虹电器股份有限公司 | An air-conditioner |
| CN103597291A (en) * | 2011-06-08 | 2014-02-19 | 三菱电机株式会社 | Refrigeration air-conditioning device |
| CN102840629A (en) * | 2011-06-20 | 2012-12-26 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system |
| CN104165486A (en) * | 2013-05-17 | 2014-11-26 | 广东美的集团芜湖制冷设备有限公司 | Defrosting method of air conditioner |
| CN104729029A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN203893480U (en) * | 2014-06-19 | 2014-10-22 | 广东志高暖通设备股份有限公司 | Air cooling heat pump unit |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017050073A1 (en) * | 2015-09-23 | 2017-03-30 | 广东美的暖通设备有限公司 | Water chiller-heater unit of air cooled heat pump and defrosting control method therefor |
| CN105928272A (en) * | 2016-04-20 | 2016-09-07 | 广东美的暖通设备有限公司 | Air conditioning system and defrosting method thereof |
| CN106642586A (en) * | 2016-12-29 | 2017-05-10 | 广东美的暖通设备有限公司 | Grading defrosting method and device for air cooled heat pump parallel-connection units |
| CN106642586B (en) * | 2016-12-29 | 2019-09-17 | 广东美的暖通设备有限公司 | A kind of classification defrosting method and device for air-cooled heat pump Parallel sets |
| CN107388656A (en) * | 2017-06-13 | 2017-11-24 | 珠海格力电器股份有限公司 | The control method of unit, apparatus and system |
| CN110715482A (en) * | 2019-08-30 | 2020-01-21 | 浙江正泰能效科技有限公司 | Defrosting method of air source heat pump unit |
| CN110715482B (en) * | 2019-08-30 | 2023-08-08 | 浙江正泰能效科技有限公司 | Defrosting method of air source heat pump unit |
| CN112539521A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Air conditioner multi-split air conditioner and defrosting control method and device and storage medium thereof |
| CN112539521B (en) * | 2020-12-21 | 2022-02-22 | 珠海格力电器股份有限公司 | Air conditioner multi-split air conditioner and defrosting control method and device and storage medium thereof |
| WO2022134906A1 (en) * | 2020-12-21 | 2022-06-30 | 珠海格力电器股份有限公司 | Multi-split air conditioner and defrosting control method and apparatus therefor, and storage medium |
| CN113944987A (en) * | 2021-11-24 | 2022-01-18 | 广东美的制冷设备有限公司 | Control method, device and equipment of air conditioning system and storage medium |
| CN115405993A (en) * | 2022-09-01 | 2022-11-29 | 合肥美的暖通设备有限公司 | Air source heat pump heating system, defrosting control method and defrosting control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105115209B (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105115209A (en) | Air cooled heat pump cold and hot water unit and defrosting control method thereof | |
| CN105318618A (en) | Air cooled hot pump water cooling and heating machine and defrosting control method thereof | |
| CN105115211A (en) | Air cooled heat pump cold and hot water unit and defrosting control method thereof | |
| CN105135774A (en) | Air cooled heat pump water chiller-heater unit and defrosting control method thereof | |
| CN101187517B (en) | Air-conditioner defrosting method | |
| CN105423495A (en) | Air conditioner as well as freeze control method and device thereof | |
| KR100821728B1 (en) | Air conditioning system | |
| CN203687233U (en) | Air-conditioning outdoor unit and air-conditioning system with same | |
| CN104832989A (en) | Air conditioner and control method for air conditioner | |
| CN104913451A (en) | Control method of air conditioner | |
| CN104279646A (en) | Outdoor unit of air conditioner, base plate assembly of outdoor unit and defrosting method for outdoor unit of air conditioner | |
| JP2013119954A (en) | Heat pump hot water heater | |
| CN102506557A (en) | Refrigeration equipment and switching unit control method in defrosting process of refrigeration equipment | |
| CN105241141A (en) | Air cooled heat pump water chiller-heater unit and defrosting control method thereof | |
| CN105299840A (en) | Multi-connected air conditioner system and fault detecting method of bypass valve of multi-connected air conditioner system | |
| JP2013234825A (en) | Air conditioner | |
| CN104501355A (en) | Control method for air conditioner | |
| CN104896581A (en) | Air conditioner and control method of air conditioner | |
| CN112880132A (en) | Method and device for defrosting control of air conditioning system and air conditioning system | |
| CN105115210A (en) | Air cooled heat pump cold and hot water unit and defrosting control method thereof | |
| CN105135775A (en) | Air cooled heat pump water chiller-heater unit and defrosting control method thereof | |
| CN105299988A (en) | Air-cooled heat pump water cooling and heating machine and high voltage protection preventing method for air-cooled heat pump water cooling and heating machine | |
| WO2008091109A1 (en) | Method and apparatus for defrosting | |
| CN204630139U (en) | Air-conditioner | |
| CN105157293A (en) | Water cooling and heating machine of air cooled heat pump and defrosting control method for water cooling and heating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |