CN111895656A - Anti-freezing control method of air source heat pump unit - Google Patents
Anti-freezing control method of air source heat pump unit Download PDFInfo
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- CN111895656A CN111895656A CN202010733935.6A CN202010733935A CN111895656A CN 111895656 A CN111895656 A CN 111895656A CN 202010733935 A CN202010733935 A CN 202010733935A CN 111895656 A CN111895656 A CN 111895656A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/02—Resistances
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- Thermal Sciences (AREA)
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Abstract
The invention provides an anti-freezing control method of an air source heat pump unit, which comprises the following steps: 1) sequentially arranging electric heaters from top to bottom along the height direction of the heat pump liner, and arranging temperature sensors at positions corresponding to the electric heaters; 2) and when the water temperature value sensed by the temperature sensor is lower than the preset temperature, the electric heater corresponding to the temperature sensor is started. According to the invention, the electric heaters are sequentially arranged along the height direction of the heat pump liner from top to bottom, the temperature sensors are arranged at the positions corresponding to the electric heaters, and when the water temperature value sensed by the temperature sensors is lower than the preset temperature, the electric heaters corresponding to the temperature sensors are started. The anti-freezing control method of the air source heat pump unit provided by the invention intervenes in anti-freezing action in advance, protects the position and the previous position, has accurate temperature judgment when the heating resistor is started, has good heating effect and low power consumption, and is beneficial to safety measures.
Description
Technical Field
The invention belongs to the technical field of air source heat pumps, and particularly relates to an anti-freezing control method of a heat pump unit.
Background
The air source heat pump is one of heat pump technologies, has the reputation of the porter of nature energy, has low use cost, easy operation, the heating is effectual, safety, clean multiple advantages such as clean, the air source heat pump uses the energy in the air as main power, through the operation of a small amount of electric energy drive compressor, realize the transfer of energy, need not complicated configuration, expensive water intaking, recharge or soil heat transfer system and special computer lab, can gradually reduce the emission of a large amount of pollutants that traditional heating brought for atmospheric environment, realize energy-concerving and environment-protective purpose when guaranteeing the heating efficiency.
The existing air source heat pump unit mainly has the following defects, such as:
1. when the ambient temperature of the air source heat pump is lower, the reverse Carnot cycle efficiency is lower, and the water temperature in the inner container is often lower and even freezes;
2. the conventional heating mode is that the judgment is carried out according to the ambient temperature, when the temperature is lower, a heating resistor arranged on an inner container is started to achieve the purpose of thawing ice, and the temperature is not accurately judged by starting the heating resistor;
3. the volume of the inner container is large (usually more than 100L), so if the water in the inner container needs to be ensured not to be frozen at low temperature, a large-power electric heating resistor is often needed, the power consumption is large, and safety measures are not facilitated;
4. because the inner bag is great in size, high, the temperature fault can appear in inside icing, and the electrical heating of simple arrangement can not play better heating effect.
Disclosure of Invention
The invention aims to provide an anti-freezing control method of an air source heat pump unit, which has a simple structure, can intervene in anti-freezing action in advance and protect the position and the previous position.
In order to achieve the purpose, the invention provides an anti-freezing control method of an air source heat pump unit, which comprises the following steps:
1) sequentially arranging electric heaters from top to bottom along the height direction of the heat pump liner, and arranging temperature sensors at positions corresponding to the electric heaters;
2) and when the water temperature value sensed by the temperature sensor is lower than the preset temperature, the electric heater corresponding to the temperature sensor is started.
Preferably, a plurality of electric heaters are distributed from top to bottom, and are indicated as P1～PnThe preset temperatures of the corresponding opening of the electric heaters are respectively T1～TnThe temperatures sensed by the temperature sensors corresponding to the electric heaters are respectively G1～GnWhen G isi<TiWhen it is, then PiStarting, wherein i is 1, 2 … … n; n is an integer and n is not less than 1.
In the preferred embodiment, the method is that,
T1＝5+a；
Tn＝T1+(n-1)×b；
a is a temperature sensor precision error value;
b is an icing degree coefficient;
n is an integer and n is not less than 1.
Preferably, the temperature G sensed by the temperature sensor arranged at the lowest part of the inner containernIs further less than TnAnd down to Tn' and when the electric heaters are all started, the electromagnetic valve at the bottom of the liner is started to discharge water in the liner, and the T isn' less than 5 ℃.
Preferably, the power of the electric heaters is increased in sequence.
Preferably, the electric heaters are arranged at equal intervals.
Preferably, the electric heater is a resistance wire.
Preferably, the volume of the inner container is more than 100L.
The preferred scheme is that the volume of the inner container is 100L, and five groups of resistance wires with sequentially increased power are sequentially distributed from top to bottom along the height direction of the heat pump inner container.
Preferably, the electric heater is in height coincidence with the corresponding temperature sensor.
According to the invention, the electric heaters are sequentially arranged along the height direction of the heat pump liner from top to bottom, the temperature sensors are arranged at the positions corresponding to the electric heaters, and when the water temperature value sensed by the temperature sensors is lower than the preset temperature, the electric heaters corresponding to the temperature sensors are started. The anti-freezing control method of the air source heat pump unit provided by the invention intervenes in anti-freezing action in advance, protects the position and the previous position, has accurate temperature judgment when the heating resistor is started, has good heating effect and low power consumption, and is beneficial to safety measures.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a temperature sensor according to the present invention with a precision error value of 1;
FIG. 3 is a schematic diagram of a temperature sensor according to the present invention with a precision error value of 0.5;
FIG. 4 is a diagram illustrating a temperature sensor accuracy error value of 2 according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by a user of ordinary skill in the art.
The invention provides an anti-freezing control method of an air source heat pump unit, which comprises the following steps:
1) sequentially arranging electric heaters from top to bottom along the height direction of the heat pump liner, and arranging temperature sensors at positions corresponding to the electric heaters;
2) and when the water temperature value sensed by the temperature sensor is lower than the preset temperature, the electric heater corresponding to the temperature sensor is started.
In another embodiment of the present invention, a plurality of electric heaters, designated as P, are arranged from top to bottom1～PnThe preset temperatures of the corresponding opening of the electric heaters are respectively T1～TnThe temperatures sensed by the temperature sensors corresponding to the electric heaters are respectively G1～GnWhen G isi<TiWhen it is, then PiStarting, wherein i is 1, 2 … … n; n is an integer and n is not less than 1.
In accordance with another embodiment of the present invention,
T1＝5+a；
Tn＝T1+(n-1)×b；
a is a temperature sensor precision error value;
b is an icing degree coefficient;
n is an integer and n is not less than 1.
In another embodiment of the present invention, the temperature G sensed by the temperature sensor arranged at the lowest part of the inner containernIs further less than TnAnd down to Tn' and when the electric heaters are all started, the electromagnetic valve at the bottom of the liner is started to discharge water in the liner, and the T isn' less than 5 ℃.
In another embodiment of the present invention, the power of the electric heaters is sequentially increased.
In another embodiment of the present invention, the electric heaters are disposed at equal intervals.
In another embodiment of the present invention, the electric heater is a resistance wire.
In another embodiment of the present invention, the volume of the inner container is 100L or more.
In another embodiment of the invention, the volume of the inner container is 100L, and five groups of resistance wires with sequentially increased power are sequentially distributed from top to bottom along the height direction of the heat pump inner container.
In another embodiment of the present invention, the electric heater is in height correspondence with the temperature sensor to which it corresponds.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、G4、G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5(ii) a When:
G1<T1when is, P1Opening;
G2<T2when is, P2Opening;
G3<at T3, P3Opening;
G4<T4when is, P4Opening;
G5<T5when is, P5And (4) opening.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、G4、 G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5(ii) a When:
G1<T1when is, P1Opening;
G2<T2when is, P2Opening;
G3<at T3, P3Opening;
G4<T4when is, P4Opening;
G5<T5when is, P5Opening;
when G is5The sensed temperature is further less than T5And down to T5' and when the electric heaters are all started, the electromagnetic valve at the bottom of the liner is started to discharge water in the liner, and the T is5' less than 5 ℃, said T1～T5Are all less than 5 ℃.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、G4、G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5，T1＝5+a，T2＝ T1+(2-1)×b，T3＝T1+(3-1)×b，T4＝T1+(4-1)×b，T5＝T1B is the icing degree coefficient, wherein b is the precision error value of the temperature sensor; when:
G1<T1when is, P1Opening;
G2<T2when is, P2Opening;
G3<at T3, P3Opening;
G4<T4when is, P4Opening;
G5<T5when is, P5And (4) opening.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the 100L liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、 G4、G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5，T1＝5+a，
T2＝T1+(2-1)×b，T3＝T1+(3-1)×b，T4＝T1+(4-1)×b，T5＝T1And (5-1) multiplied by b, wherein a is a precision error value of the temperature sensor, and b is an icing degree coefficient. In this example, a is 1, b is 0.5, then T1＝6℃、 T2＝6.5℃、T3＝7℃、T4＝7.5℃、T5The temperature is 8 ℃; when:
G1<at 6 ℃ P1Opening;
G2<at 6.5 ℃ P2Opening;
G3<at 7 ℃ P3Opening;
G4<at 7.5 ℃ P4Opening;
G5<at 8 ℃ P5And (4) opening.
As shown in fig. 2, taking the uppermost temperature measurement point as an example, when the temperature is lowered to 6 ℃ and further lowered immediately before the electric heating device is started, the heating device is started, and the temperature is raised to a temperature higher than the freezing temperature and stopped (higher than the starting temperature by 3 ℃). And (4) after stopping, circulating the temperature reduction-temperature rise process.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the 100L liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、 G4、G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5，T1＝5+a，
T2＝T1+(2-1)×b，T3＝T1+(3-1)×b，T4＝T1+(4-1)×b，T5＝T1And (5-1) multiplied by b, wherein a is a precision error value of the temperature sensor, and b is an icing degree coefficient. In this example, a is 0.5 and b is 0.5, then T1＝5.5℃、 T2＝6℃、T3＝6.5℃、T4＝7℃、T57.5 ℃ under the condition of no less than zero; when:
G1<at 5.5 ℃ P1Opening;
G2<at 6 ℃ P2Opening;
G3<at 6.5 ℃ P3Opening;
G4<at 7 ℃ P4Opening;
G5<at 7.5 ℃ P5And (4) opening.
As shown in fig. 3, taking the uppermost temperature measurement point as an example, when the temperature is lowered to 5.5 ℃ and further lowered immediately before the start of the electric heating device, the heating device is started, and the temperature is raised to the freezing temperature or higher and stopped (3 ℃ higher than the start temperature). And (4) after stopping, circulating the temperature reduction-temperature rise process.
In another embodiment of the invention, five groups of resistance wires with gradually increasing power are sequentially arranged on the liner from top to bottom, and the five groups of resistance wires are respectively P1、P2、P3、P4、P5The five groups of resistance wires are specifically equal in interval; the positions with the same height as each group of resistance wires are respectively provided with a temperature sensor, and the temperature values sensed by the temperature sensors are G1、G2、G3、G4、G5(ii) a Each group of resistance wires P1、P2、P3、P4、P5The preset temperature of the start is T1、T2、T3、T4、T5，T1＝5+a，T2＝ T1+(2-1)×b，T3＝T1+(3-1)×b，T4＝T1+(4-1)×b，T5＝T1And (5-1) multiplied by b, wherein a is a precision error value of the temperature sensor, and b is an icing degree coefficient. In this example, a is 2, b is 0.5, then T1＝7℃、T2＝7.5℃、 T3＝8℃、T4＝8.5℃、T5The temperature is 9 ℃; when:
G1<at 7 ℃ P1Opening;
G2<at 7.5 ℃ P2Opening;
G3<at 8 ℃ P3Opening;
G4<at 8.5 ℃ P4Opening;
G5<at 9 ℃ P5And (4) opening.
As shown in fig. 4, taking the uppermost temperature measurement point as an example, when the temperature is lowered to 7 ℃ and further lowered immediately before the electric heating device is started, the heating device is started, and the temperature is raised to a temperature higher than the freezing temperature and stopped (higher than the starting temperature by 3 ℃). And (4) after stopping, circulating the temperature reduction-temperature rise process.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The anti-freezing control method of the air source heat pump unit is characterized by comprising the following steps:
1) sequentially arranging electric heaters from top to bottom along the height direction of the heat pump liner, and arranging temperature sensors at positions corresponding to the electric heaters;
2) and when the water temperature value sensed by the temperature sensor is lower than the preset temperature, the electric heater corresponding to the temperature sensor is started.
2. The antifreeze control method of air source heat pump unit as set forth in claim 1, wherein a plurality of electric heaters, designated as P, are arranged from top to bottom1～PnThe preset temperature of the electric heater corresponding to the openingAre respectively T1～TnThe temperatures sensed by the temperature sensors corresponding to the electric heaters are respectively G1～GnWhen G isi<TiWhen it is, then PiStarting, wherein i is 1, 2 … … n; n is an integer and n is not less than 1.
3. The anti-freezing control method of the air source heat pump unit according to claim 2,
T1＝5+a；
Tn＝T1+(n-1)×b；
a is a temperature sensor precision error value;
b is an icing degree coefficient;
n is an integer and n is not less than 1.
4. The antifreeze control method of the air source heat pump unit according to claim 2, wherein the temperature G sensed by the temperature sensor arranged at the lowest part of the inner container isnIs further less than TnAnd down to Tn' and when the electric heaters are all started, the electromagnetic valve at the bottom of the liner is started to discharge water in the liner, and the T isn' less than 5 ℃.
5. The antifreeze control method of the air source heat pump unit according to claim 2, wherein the power of the electric heaters is increased in sequence.
6. The antifreeze control method of the air source heat pump unit according to claim 1, wherein the electric heaters are arranged at equal intervals.
7. The anti-freezing control method of the air source heat pump unit according to claim 1, wherein the electric heater is a resistance wire.
8. The anti-freezing control method of the air source heat pump unit according to claim 1, wherein the volume of the inner container is more than 100L.
9. The anti-freezing control method of the air source heat pump unit as claimed in claim 7, wherein the volume of the inner container is 100L, and five groups of resistance wires with sequentially increased power are sequentially arranged from top to bottom along the height direction of the inner container of the heat pump.
10. The antifreeze control method of the air source heat pump unit according to claim 1, wherein the electric heater is in accordance with the corresponding temperature sensor in height.
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| CN202010733935.6A CN111895656A (en) | 2020-07-24 | 2020-07-24 | Anti-freezing control method of air source heat pump unit |
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| CN202010733935.6A CN111895656A (en) | 2020-07-24 | 2020-07-24 | Anti-freezing control method of air source heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151973A (en) * | 2021-11-02 | 2022-03-08 | 广东万和新电气股份有限公司 | Anti-freezing method and anti-freezing control device |
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| KR100607262B1 (en) * | 2004-11-09 | 2006-07-31 | 엘지전자 주식회사 | Wine cellar and temperature controlling method of the same |
| CN201462397U (en) * | 2009-04-22 | 2010-05-12 | 中国水利水电第五工程局有限公司 | Freezing preventer for gas cylinders |
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| CN114151973A (en) * | 2021-11-02 | 2022-03-08 | 广东万和新电气股份有限公司 | Anti-freezing method and anti-freezing control device |
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Effective date of registration: 20210511 Address after: 100176 No.12 Yuncheng street, economic and Technological Development Zone, Daxing District, Beijing Applicant after: Beijing Thermal Equipment Manufacturing Co.,Ltd. Address before: 100023 east of the first work station (Banbidian Village) in Xizhihe village, Shibalidian Township, Chaoyang District, Beijing and North Bank of xiaotaihou River Applicant before: BEIJING WEIYE HEAT SUPPLY EQUIPMENT Co.,Ltd. |
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Application publication date: 20201106 |