CN211204535U - Frosting sensor - Google Patents
Frosting sensor Download PDFInfo
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- CN211204535U CN211204535U CN201922016748.1U CN201922016748U CN211204535U CN 211204535 U CN211204535 U CN 211204535U CN 201922016748 U CN201922016748 U CN 201922016748U CN 211204535 U CN211204535 U CN 211204535U
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Abstract
The embodiment of the utility model discloses frosting sensor, including detection device: the device is arranged in an air channel of the air source heat pump and used for detecting the flow speed and/or flow of gas in the air channel and outputting electric signals with different intensities; a control device: coupling is in detection device and acquires the signal of telecommunication of detection device output, control device has preset the signal of telecommunication intensity threshold value, when signal of telecommunication intensity is less than the signal of telecommunication intensity threshold value, the supply circuit of control defrosting equipment switches on, through the change that detects gaseous flow and/or the velocity of flow in the air duct, judge the degree that air source heat pump frosted, and when frosting and reach automatic defrosting equipment of opening behind the certain degree, the wasting of resources of having avoided traditional periodic defrosting, can guarantee timely defrosting simultaneously, reach better defrosting effect.
Description
Technical Field
The embodiment of the utility model provides a relate to defrosting technical field, concretely relates to frosting sensor.
Background
An air source heat pump is an energy-saving device which utilizes high-level energy to enable heat to flow from low-level heat source air to a high-level heat source. It is a form of heat pump. As the name implies, a heat pump, like a pump, can convert low-level heat energy which cannot be directly utilized into high-level heat energy which can be utilized, thereby achieving the purpose of saving part of the high-level energy.
In cold and high humidity areas, defrosting an air source heat pump is an important step for ensuring the normal operation of the air source heat pump. At present, the defrosting mode of the air source heat pump is to periodically and automatically defrost, and whether frost is formed or not, the defrosting mode enters a defrosting working state according to a set program. This will lead to when need not defrosting, extravagant energy consumption, influence to the energy-conserving effect of air supply heat pump, not only air supply heat pump, to in cold and higher humidity area, the defrosting work of many equipment is regularly defrosting, like air conditioner etc. this all leads to the production of the negative effect such as extravagant energy consumption.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a frosting sensor to solve the problem of the extravagant energy consumption that leads to among the prior art because periodic automatic defrosting.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a frost sensor comprising:
the detection device comprises: the device is arranged in the air channel and used for detecting the flow speed and/or flow of the gas in the air channel and outputting electric signals with different intensities;
a control device: the control device is provided with an electric signal intensity threshold in advance, and controls the power supply circuit of the defrosting equipment to be switched on when the electric signal intensity is lower than the electric signal intensity threshold.
Further, the detecting means includes a fan motor for detecting a flow rate of the gas in the air passage.
Further, the detection device comprises a triode and a relay for controlling the defrosting equipment to be conducted, the base electrode of the triode and the emitting electrode of the triode are respectively coupled to two electrodes of the fan motor, a coil of the relay is connected in series between the collector electrode of the triode and the power supply end, and a normally closed switch of the relay is connected in series to a power supply circuit of the defrosting equipment.
Furthermore, a pull-down resistor is connected in series between the fan motor and the emitting electrode of the triode, and a current-limiting resistor is connected in series between the fan motor and the base electrode of the triode.
Further, the detection device includes a gas flow sensor for detecting a flow rate of the gas in the air passage.
Further, the detection device comprises a controller coupled to the gas flow sensor and a control switch coupled to the controller, the controller is configured to convert an electrical signal output by the gas flow sensor into an analog signal, a gas flow threshold is preset in the controller, when the analog signal is smaller than the gas flow threshold, a control signal is output, and when the control signal is received, the control switch controls a power supply circuit of the defrosting device to be turned on.
The embodiment of the utility model provides a have following advantage: the frosting degree of the air source heat pump is judged by detecting the change of the flow and/or the flow speed of gas in the air channel, and the defrosting equipment is automatically started after the frosting reaches a certain degree, so that the resource waste of the traditional periodic defrosting is avoided, the timely defrosting can be ensured, and the better defrosting effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a circuit diagram of a frost sensor provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a frost sensor provided in embodiment 2 of the present invention.
In the figure: r1, pull-down resistor; r2, current limiting resistor; r3, coil; q, a triode; m, a fan motor; 11. a gas flow sensor; 12. controlling and installing the device; 13. and controlling the switch.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: a frosting sensor, as shown in FIG. 1, comprises a detection device and a control device, taking an air source heat pump as an example, wherein the detection device is arranged in an air channel of the air source heat pump and is used for detecting the flow speed and/or flow of gas in the air channel and outputting electric signals with different intensities; the control device is coupled to the detection device and obtains the electric signal output by the detection device, an electric signal intensity threshold value is preset in the control device, and when the electric signal intensity is lower than the electric signal intensity threshold value, the power supply circuit of the defrosting equipment is controlled to be conducted.
In this embodiment, the detecting device is preferably a fan motor M, the fan motor M is fixed in the air passage, the fan motor M converts the rotation speed into a voltage signal, the voltage signal is stronger when the rotation speed of the fan motor M is higher, and conversely, the voltage signal is weaker when the rotation speed of the fan motor M is lower. The detection device preferably includes a transistor Q and a relay in this embodiment, a base of the transistor Q and an emitter of the transistor Q are coupled to two poles of the fan motor M, respectively, a coil R3 of the relay is connected in series between a collector of the transistor Q and a power supply terminal, a normally closed switch of the relay is connected in series to a power supply circuit of the defrosting device, a pull-down resistor R1 is connected in series between the emitter of the fan motor M and the emitter of the transistor Q, and a current-limiting resistor R2 is connected in series between the base of the fan motor M and the base of the transistor Q, and the relay serves as a pull-up resistor at the same time. When the air source heat pump frosts, the air flow rate in the air channel is slowed down due to frosting, so that the rotating speed of the fan motor M is slowed down, the voltage output by the fan motor M is lowered, when the voltage of the fan motor M is lower than the lowest voltage capable of controlling the conduction of the triode Q, the coil R3 of the relay is powered off, at the moment, the normally closed switch of the relay is closed, and the defrosting equipment starts to work.
Example 2: a frost formation sensor, as shown in fig. 2, in the present embodiment, the detecting means includes a gas flow sensor 11 for detecting the flow rate of gas in the air passage, and the gas flow sensor 11 is provided in the air passage, and functions in the same manner as the fan motor M in embodiment 1.
The detection device comprises a controller and a control switch 13, wherein the controller is coupled to the gas flow sensor 11, the control switch 13 is coupled to the controller, the controller is used for converting an electric signal output by the gas flow sensor 11 into an analog signal, a gas flow threshold value is preset in the controller, when the analog signal is smaller than the gas flow threshold value, a control signal is output, and when the control signal is received, the control switch 13 controls the conduction of a power supply circuit of the defrosting equipment.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A frosting sensor is characterized in that: the method comprises the following steps:
the detection device comprises: the device is arranged in the air channel and used for detecting the flow speed and/or flow of the gas in the air channel and outputting electric signals with different intensities;
a control device: the control device is provided with an electric signal intensity threshold in advance, and controls the power supply circuit of the defrosting equipment to be switched on when the electric signal intensity is lower than the electric signal intensity threshold.
2. A frost sensor according to claim 1, wherein: the detection device comprises a fan motor for detecting the flow rate of the gas in the air passage.
3. A frost sensor according to claim 2, wherein: the detection device comprises a triode and a relay used for controlling the defrosting equipment to be conducted, the base electrode of the triode and the emitting electrode of the triode are respectively coupled to two electrodes of the fan motor, a coil of the relay is connected in series between the collecting electrode of the triode and the power supply end, and a normally closed switch of the relay is connected in series to a power supply circuit of the defrosting equipment.
4. A frost sensor according to claim 3, wherein: a pull-down resistor is connected in series between the fan motor and the emitting electrode of the triode, and a current limiting resistor is connected in series between the fan motor and the base electrode of the triode.
5. A frost sensor according to claim 1, wherein: the detection means comprise a gas flow sensor (11) for detecting the flow of gas in the air passage.
6. The frost sensor of claim 5, wherein: the detection device comprises a controller and a control switch (13), wherein the controller is coupled to the gas flow sensor (11), the control switch (13) is coupled to the controller, the controller is used for converting an electric signal output by the gas flow sensor (11) into an analog signal, a gas flow threshold value is preset in the controller, a control signal is output when the analog signal is smaller than the gas flow threshold value, and the control switch (13) controls a power supply circuit of the defrosting equipment to be conducted when receiving the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016748.1U CN211204535U (en) | 2019-11-20 | 2019-11-20 | Frosting sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016748.1U CN211204535U (en) | 2019-11-20 | 2019-11-20 | Frosting sensor |
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| Publication Number | Publication Date |
|---|---|
| CN211204535U true CN211204535U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922016748.1U Active CN211204535U (en) | 2019-11-20 | 2019-11-20 | Frosting sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234520A (en) * | 2021-12-21 | 2022-03-25 | 海信（山东）冰箱有限公司 | Refrigerator and defrosting control method thereof |
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2019
- 2019-11-20 CN CN201922016748.1U patent/CN211204535U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234520A (en) * | 2021-12-21 | 2022-03-25 | 海信（山东）冰箱有限公司 | Refrigerator and defrosting control method thereof |
| CN114234520B (en) * | 2021-12-21 | 2023-12-29 | 海信冰箱有限公司 | Refrigerator and defrosting control method thereof |
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