CN114909775A - Desktop air conditioner, defrosting control method and device of desktop air conditioner and storage medium - Google Patents

Abstract

The present disclosure relates to a desktop air conditioner, a defrosting control method, device and storage medium for the desktop air conditioner. The method includes: acquiring the temperature of a first radiator connected to a first end face of a thermoelectric semiconductor in the desktop air conditioner; The temperature of the first radiator satisfies the pre-frost condition, and the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator is determined; based on the temperature difference, the first radiator is determined. Whether a radiator is in a frosted state; if the first radiator is in the frosted state, a control component connected to the thermoelectric semiconductor is used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction is the second current direction; wherein, the first current direction and the second current direction are opposite.

Description

Desktop air conditioner, defrosting control method, device and storage medium of desktop air conditioner

technical field

The present disclosure relates to the field of household electrical appliances, in particular to a desktop air conditioner, a defrosting control method, device and storage medium for the desktop air conditioner.

Background technique

With the continuous improvement of people's living standards, air conditioners have become commonly used electrical equipment in people's lives; a new type of air conditioner—desktop air conditioner, because it takes into account the needs of users for the cooling, heating effect and convenience of air conditioners, gradually favored by consumers.

When the desktop air conditioner is used for heating in winter, since the cooling surface of the thermoelectric semiconductor in the desktop air conditioner needs to release cold energy, a radiator is usually installed on the cooling surface of the thermoelectric semiconductor; but when the temperature of the radiator on the cooling surface is lower than zero, the heat dissipation There may be the possibility of frost on the radiator, and as the thickness of the frost layer on the surface of the radiator increases, the heat exchange effect of the radiator decreases significantly, which reduces the heating effect and energy efficiency of the desktop air conditioner.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the related art, the present disclosure provides a desktop air conditioner, a defrosting control method, device and storage medium for the desktop air conditioner.

According to a first aspect of the embodiments of the present disclosure, there is provided a defrosting control method for a desktop air conditioner, which is applied to the desktop air conditioner. The method includes:

Obtain the temperature of the first radiator connected to the first end face of the thermoelectric semiconductor in the desktop air conditioner;

If the temperature of the first radiator satisfies the pre-frost condition, determining the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator;

Based on the temperature difference value, determining whether the first radiator is in a frosted state;

If the first heat sink is in the frosted state, the control component connected to the thermoelectric semiconductor is used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction; wherein, the The first current direction and the second current direction are opposite.

Optionally, the determining whether the first radiator is in a frosting state based on the temperature difference value includes:

If the ambient temperature is greater than a preset temperature, determine whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold;

If the ambient temperature is lower than the preset temperature, it is determined whether the first radiator is in a frosting state according to the comparison result between the temperature difference and the second temperature difference threshold; wherein the first temperature difference threshold is greater than the first temperature difference threshold. the second temperature difference threshold.

Optionally, the method includes: acquiring the temperature of the first end face of the thermoelectric semiconductor;

If the ambient temperature is greater than a preset temperature, determining whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold, including:

If the ambient temperature is greater than a preset temperature and the temperature of the first end face is less than a first temperature threshold, determine whether the first heat sink is in the junction according to the comparison result between the temperature difference and the first temperature difference threshold frost state;

If the ambient temperature is lower than the preset temperature, determining whether the first radiator is in a frosted state according to the comparison result between the temperature difference and the second temperature difference threshold, including:

If the ambient temperature is less than the preset temperature and the temperature of the first end face is less than a second temperature threshold, determine whether the first heat sink is not based on a comparison result between the temperature difference and the second temperature difference threshold in a frosted state; wherein the first temperature threshold is greater than the second temperature threshold.

Optionally, if the temperature of the first radiator satisfies the pre-frost condition, determining the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator, including:

If the temperature of the first radiator is less than a preset first temperature value, determining that the temperature of the first radiator satisfies the pre-frost condition;

recording a first duration for which the current temperature of the first heat sink is less than the first temperature value;

After the first duration is greater than a preset duration threshold, obtain the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator;

A temperature difference between the ambient temperature and the current temperature of the first heat sink is determined.

Optionally, after controlling the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction, the method further includes:

obtaining the current temperature of the first radiator;

If the current temperature of the first radiator is greater than a preset second temperature value, recording a second duration for which the current temperature of the first radiator is greater than the second temperature value;

If the second duration is greater than a preset second duration threshold, the control component is used to control the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction.

Optionally, the controlling the switching of the electrical signal flowing through the thermoelectric semiconductor from the first current direction to the second current direction includes:

Using the control component, the electrical signal flowing through the thermoelectric semiconductor is controlled to switch from the first current direction to the second current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled to be switched off state;

The controlling the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction using the control component includes:

Using the control assembly, the current flowing through the thermoelectric semiconductor is controlled to switch from the second current direction back to the first current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled restore operation.

According to a second aspect of the embodiments of the present disclosure, there is provided a desktop air conditioner, including:

a casing and a thermoelectric semiconductor inside the casing; wherein, the thermoelectric semiconductor divides the accommodating space in the casing into relatively independent first air ducts and second air ducts;

The first air duct includes:

the first fan;

a first heat sink, connected to the first end face of the thermoelectric semiconductor;

a first temperature detection element, disposed on the first radiator, for detecting the temperature of the first radiator;

a second temperature detection element, disposed at the air inlet of the casing, for detecting the ambient temperature of the environment where the casing is located;

a control assembly, connected to the first temperature detection element, the second temperature detection element and the thermoelectric semiconductor, for detecting the temperature of the first heat sink and the first temperature detection element based on the temperature of the first temperature detection element and the first temperature detection element The ambient temperature detected by the two temperature detection elements controls the current direction of the electrical signal flowing through the thermoelectric semiconductor.

Optionally, the first air duct further includes:

a third temperature detection element, disposed on the first end face of the thermoelectric semiconductor, for detecting the temperature of the first end face;

The control assembly is connected to the third temperature detection element and is used for detecting the temperature of the first radiator according to the first temperature detection element, the ambient temperature detected by the second temperature detection element, and The temperature of the first end surface detected by the third temperature detection element controls the current direction of the electric signal flowing through the pyroelectric semiconductor.

Optionally, the second air duct includes:

second fan;

a second heat sink connected to the second end face of the thermoelectric semiconductor;

The airflow passing through the second air duct conducts heat exchange with the second end face of the thermoelectric semiconductor through the second heat sink in the second air duct, and the heat-exchanged airflow is removed from the second air duct. The outlet output of the air duct.

According to a third aspect of the embodiments of the present disclosure, a defrost control device for a desktop air conditioner is provided, comprising:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to: when executing the executable instructions, implement the steps in the method according to the first aspect of the embodiments of the present disclosure.

According to a fourth aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, when instructions in the storage medium are executed by a processor of a defrost control device of a desktop air conditioner, defrosting the desktop air conditioner The control device can perform the steps in the method as described in the first aspect of the embodiments of the present disclosure.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the embodiment of the present disclosure, by acquiring the temperature of the first radiator, according to the temperature of the first radiator, it is determined whether the first radiator satisfies the pre-frost condition, and when the first radiator satisfies the pre-frost condition After the frost condition is reached, based on the temperature difference between the first radiator temperature and the current ambient temperature, determine the frosting condition of the first radiator, and after determining that the first radiator is in the frosting state, use the same The control component connected with the thermoelectric semiconductor controls the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction; so that the first end surface connected to the first heat sink is converted from a cooling surface to a heating surface , using the heating surface to release heat to defrost the frost layer formed on the surface of the first radiator. On the one hand, the impact of frost on the first radiator on the energy efficiency and heating effect of the desktop air conditioner can be reduced; Unnecessary defrosting treatment.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic flowchart 1 of a defrosting control method for a desktop air conditioner according to an exemplary embodiment.

FIG. 2 is a schematic structural diagram of a thermoelectric semiconductor according to an exemplary embodiment.

FIG. 3 is a schematic structural diagram 1 of a desktop air conditioner according to an exemplary embodiment.

FIG. 4 is a second structural schematic diagram of a desktop air conditioner according to an exemplary embodiment.

FIG. 5 is a second schematic flowchart of a defrosting control method for a desktop air conditioner according to an exemplary embodiment.

FIG. 6 is a third schematic flowchart of a defrosting control method for a desktop air conditioner according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as recited in the appended claims.

An embodiment of the present disclosure provides a defrosting control method for a desktop air conditioner. As shown in FIG. 1 , FIG. 1 is a schematic flowchart 1 of a defrosting control method for a desktop air conditioner according to an exemplary embodiment. The method is applied to a desktop air conditioner, and the method includes:

Step S101, obtaining the temperature of the first radiator connected to the first end face of the thermoelectric semiconductor in the desktop air conditioner;

Step S102, if the temperature of the first radiator satisfies the pre-frost condition, determine the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator;

Step S103, based on the temperature difference, determine whether the first radiator is in a frosted state;

Step S104, if the first heat sink is in the frosted state, use a control component connected to the thermoelectric semiconductor to control the electrical signal flowing through the thermoelectric semiconductor to switch from a first current direction to a second current direction; Wherein, the direction of the first current and the direction of the second current are opposite.

In step S101, the temperature of the first heat sink may be acquired by using a first temperature detection element at the first heat sink, and based on the temperature of the first heat sink, it is determined whether the temperature of the first heat sink meets a predetermined temperature frost conditions.

In the embodiment of the present disclosure, the first heat sink is connected to the first end surface of the thermoelectric semiconductor. When the desktop air conditioner operates in the heating mode, the first end surface of the thermoelectric semiconductor is a cooling surface, which flows to the first end surface of the thermoelectric semiconductor. The airflow of a radiator exchanges heat with the cooling surface of the thermoelectric semiconductor through the first radiator, so that the cooling capacity generated by the thermoelectric semiconductor when the desktop air conditioner is heated is taken away by the airflow.

Here, as shown in FIG. 2 , FIG. 2 is a schematic structural diagram of a thermoelectric semiconductor according to an exemplary embodiment. The thermoelectric semiconductor is an electronic component that uses the thermoelectric effect (Peltier effect) to generate cold and heat. After the thermoelectric semiconductor is supplied with direct current, one end of the thermoelectric semiconductor can absorb the heat of the surrounding environment to achieve cooling effect, and the other The end face can release heat to the surrounding environment to achieve heating effect.

It should be noted that, if the temperature of the environment where the desktop air conditioner is located is relatively low, since the first radiator in the desktop air conditioner is connected to the cooling surface of the thermoelectric semiconductor, the temperature of the first radiator is higher than the ambient temperature. The temperature will be lower, and there is a possibility of frosting; and with the increase of the thickness of the frost layer on the first radiator, the heat exchange effect of the first radiator decreases significantly, so that the temperature between the cooling surface and the heating surface of the thermoelectric semiconductor increase, affecting the heating effect of thermoelectric semiconductors. Therefore, when the first radiator of the desktop air conditioner is frosted, the first radiator needs to be defrosted.

In the embodiment of the present disclosure, a first temperature detection element may be provided at the first radiator in the desktop air conditioner, and the temperature of the first radiator detected by the first temperature detection element is compared with a preset first temperature value , and determine whether the temperature of the first radiator satisfies the pre-frost condition according to the comparison result.

Here, the first temperature value is less than or equal to 0°C, and the specific value can be set according to actual requirements. It can be understood that since frost is a solid form of water, and the freezing point of water is 0°C, the surface temperature of the first radiator is at least below 0°C before frosting occurs. Considering that the desktop air conditioner is located in different environments, there may be impurities in the water vapor in the air, and the freezing point of the water vapor may be lower than 0°C.

In step S102, if the first radiator satisfies the pre-frost condition, use the second temperature detection element disposed at the air inlet of the desktop air conditioner to detect the ambient temperature where the desktop air conditioner is located; and determine the desktop air conditioner The temperature difference between the ambient temperature where the air conditioner is located and the current temperature of the first radiator.

When it is determined that the first radiator satisfies the pre-frost condition, that is, the current temperature of the first radiator has the possibility of frost, use the second temperature detection element to detect the ambient temperature of the environment where the desktop air conditioner is located; and Based on the ambient temperature and the current temperature of the first heat sink, a temperature difference value between the ambient temperature and the current temperature of the first heat sink is determined.

It should be noted that the temperature of the airflow flowing from the air inlet of the desktop air conditioner to the first air duct is the same as the ambient temperature. When the airflow flows to the first radiator, the airflow temperature is the same as There is a temperature difference in the temperature of the first radiator, and heat transfer occurs between the airflow and the first radiator; it is understandable that, if the temperature of the airflow and the temperature of the first radiator are greatly different, the water vapor in the airflow will not be released. condensation and frost on the surface of the first radiator.

Therefore, in this embodiment of the present disclosure, the temperature difference between the ambient temperature and the temperature of the first radiator can be determined by detecting the ambient temperature and the temperature of the first radiator, so that whether the first radiator is frosted can be determined based on the temperature difference. Happening.

In step S103, the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator is compared with a preset temperature difference threshold, and the first temperature difference is determined according to the comparison result. Whether the radiator is in a frosted state.

It should be noted that, considering that if the first radiator is frosted, the temperature of the first radiator will decrease as the severity of frosting increases, and the temperature difference between the temperature of the first radiator and the ambient temperature The value will also be larger.

If the temperature difference between the ambient temperature and the current temperature of the first radiator is less than the preset temperature difference threshold, it means that the first radiator does not have frost, or the first radiator has thin frost. At this time, the frosting of the first radiator has little effect on the energy efficiency and heating effect of the desktop air conditioner, so it is not necessary to perform defrosting treatment on the first radiator. Therefore, it can be determined that the first radiator is not in the frosted state.

If the temperature difference between the ambient temperature and the current temperature of the first radiator is greater than the temperature difference threshold, it means that the first radiator is seriously frosted, because the frost on the first radiator at this time is not The energy efficiency and heating effect of the desktop air conditioner have a great influence, and the first radiator needs to be defrosted; therefore, it can be determined that the first radiator is in a frosted state.

Here, the temperature difference threshold may be set according to actual requirements, which is not limited in this embodiment of the present disclosure.

In step S104, if it is determined that the first radiator is in a frosted state, a defrosting process needs to be performed on the first radiator.

Considering the characteristics of the thermoelectric semiconductor, that is, if the electrical signal flowing through the thermoelectric semiconductor is in the first current direction, the first end face of the thermoelectric semiconductor is the cooling face, and the second end face is the heating face; When the electrical signal of the thermoelectric semiconductor is in the second current direction, the second end surface of the thermoelectric semiconductor is a heating surface, and the second end surface is a cooling surface.

Therefore, in the embodiment of the present disclosure, the control component connected to the thermoelectric semiconductor can be used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction; One end surface is converted from a cooling surface to a heating surface, and the heating surface is used to release heat to defrost the frost layer formed on the surface of the first radiator.

Optionally, the determining whether the first radiator is in a frosting state based on the temperature difference value includes:

If the ambient temperature is greater than a preset temperature, determine whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold;

If the ambient temperature is lower than the preset temperature, it is determined whether the first radiator is in a frosting state according to the comparison result between the temperature difference and the second temperature difference threshold; wherein the first temperature difference threshold is greater than the first temperature difference threshold. the second temperature difference threshold.

In the embodiment of the present disclosure, by comparing the ambient temperature with the preset temperature, and according to the comparison result, the corresponding temperature difference threshold value when the first radiator is in the frosting state is determined.

If the ambient temperature is greater than the preset temperature, the temperature difference value may be compared with the first temperature difference threshold value, and according to the comparison result, it is determined whether the first radiator is in a frosted state;

If the ambient temperature is lower than the preset temperature, the temperature difference value may be compared with the second temperature difference threshold value, and according to the comparison structure, it is determined whether the first radiator is in a frosted state.

Here, the preset temperature, the first temperature difference threshold, and the second temperature difference threshold may be set according to actual needs, for example, the preset temperature may be 0°C, and the first temperature difference threshold may be 10 °C, the second temperature difference threshold may be 8 °C.

It should be noted that, considering that the ambient temperature of the environment where the desktop air conditioner is located will also affect the frosting of the first radiator, under different ambient temperatures, when frosting occurs on the first radiator, the temperature of the first radiator will be different from that of the first radiator. The temperature difference between ambient temperatures may also vary.

In order to more accurately determine the frosting condition of the first radiator, the embodiment of the present disclosure determines an appropriate temperature difference threshold according to the comparison result between the current ambient temperature and the preset temperature, and then according to the current ambient temperature and the temperature of the first radiator The comparison result between the temperature difference and the temperature difference threshold value determines whether the first radiator is in a frosting state.

Optionally, the method includes: acquiring the temperature of the first end face of the thermoelectric semiconductor;

If the ambient temperature is greater than a preset temperature, determining whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold, including:

If the ambient temperature is greater than a preset temperature and the temperature of the first end face is less than a first temperature threshold, determine whether the first heat sink is in the junction according to the comparison result between the temperature difference and the first temperature difference threshold frost state;

If the ambient temperature is lower than the preset temperature, determining whether the first radiator is in a frosted state according to the comparison result between the temperature difference and the second temperature difference threshold, including:

If the ambient temperature is less than the preset temperature and the temperature of the first end face is less than a second temperature threshold, determine whether the first heat sink is not based on a comparison result between the temperature difference and the second temperature difference threshold in a frosted state; wherein the first temperature threshold is greater than the second temperature threshold.

It should be noted that after the first radiator is frosted, the heat exchange efficiency of the first radiator is significantly reduced, which leads to a sharp drop in the temperature of the cooling surface of the thermoelectric semiconductor, which affects the working performance of the thermoelectric semiconductor.

Therefore, in order to improve the accuracy of judging the frosting state of the first radiator, in the embodiment of the present disclosure, when determining whether the first radiator is in the frosting state, not only the ambient temperature and the temperature of the first radiator are considered, but also the to the temperature of the first end face of the thermoelectric semiconductor.

The temperature of the first end surface can be obtained by using the third temperature detection element disposed at the first end surface of the thermoelectric semiconductor. If the ambient temperature is greater than the preset temperature and the temperature of the first end surface is less than the first temperature threshold, comparing the temperature difference value with the first temperature difference threshold value, and determining whether the first radiator is in a frosted state according to the comparison result;

If the ambient temperature is less than the preset temperature, and the temperature of the first end face is less than a second temperature threshold, the temperature difference is compared with the second temperature difference threshold, and the comparison result is used to determine the Whether the first radiator is in a frosted state.

Here, the first temperature threshold and the second temperature threshold may be set according to actual requirements. For example, the first temperature threshold may be -10°C, and the second temperature threshold may be -20°C.

Optionally, if the temperature of the first radiator satisfies the pre-frost condition, determining the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator, including:

If the temperature of the first radiator is less than a preset first temperature value, determining that the temperature of the first radiator satisfies the pre-frost condition;

recording a first duration for which the current temperature of the first heat sink is less than the first temperature value;

After the first duration is greater than a preset duration threshold, obtain the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator;

A temperature difference between the ambient temperature and the current temperature of the first heat sink is determined.

In the embodiment of the present disclosure, by comparing the detected temperature of the first heat sink with a preset first temperature value, if the comparison result indicates that the temperature of the first heat sink is lower than the first temperature value, It is determined that the temperature of the first radiator satisfies the pre-frost condition, that is, the first radiator may be frosted.

Considering that the temperature of the first radiator fluctuates due to some external conditions such as environmental changes or the desktop air conditioner is close to the heat source, so that the first radiator may not have the frosting condition, in the embodiment of the present disclosure, the first radiator satisfies the conditions. After the pre-frost condition, the temperature value of the first radiator is detected in real time, and the current temperature of the first radiator is recorded to be less than the first duration of the first temperature value. A duration is used to assist in judging the frosting condition of the first radiator.

It can be understood that, if within a preset time period after the first radiator satisfies the pre-frost condition, the first duration for which the current temperature of the first radiator is lower than the first temperature value is shorter. , the first radiator may not be frosted, or the degree of frosting may be light. If the first duration for which the current temperature of the first radiator is lower than the first temperature value is longer, the first radiator is more likely to have severe frost formation.

After the first duration is greater than the preset duration threshold, the first temperature detection element is used to obtain the current temperature of the first radiator, the second temperature detection element is used to obtain the current ambient temperature, and based on the first temperature detection element The current temperature and the ambient temperature are determined, and the temperature difference between the ambient temperature and the current temperature of the first radiator is determined.

In this embodiment of the present disclosure, after it is determined that the current temperature of the first radiator is continuously lower than the preset first temperature value, based on the current ambient temperature and the temperature of the first radiator, the difference between the ambient temperature and the temperature of the first radiator is determined. The temperature difference value, so as to determine the frosting condition of the first radiator according to the temperature difference value.

Optionally, after controlling the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction, the method further includes:

obtaining the current temperature of the first radiator;

If the current temperature of the first radiator is greater than a preset second temperature value, recording a second duration for which the current temperature of the first radiator is greater than the second temperature value;

If the second duration is greater than a preset second duration threshold, the control component is used to control the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction.

In the embodiment of the present disclosure, after the defrosting process is performed on the first radiator, the current temperature of the first radiator is acquired by using a first temperature detection element;

It can be understood that after the defrosting process is performed on the first radiator, the electrical signal flowing through the thermoelectric semiconductor in the desktop air conditioner is in the second current direction, and the desktop air conditioner is in a defrosting state. The defrosting situation of the first radiator can be determined according to the temperature of the first radiator, and then it is determined whether it is necessary to exit the defrosting state.

If the current temperature of the first radiator is greater than the preset second temperature value, the current temperature of the first radiator is detected in real time, and the current temperature of the first radiator is greater than the second temperature value. Second duration.

Here, the second temperature value may be greater than 0°C; the specific value may be set according to actual needs. For example, the second temperature value may be 10° C., which is not limited in the embodiment of the present disclosure.

Comparing the second duration with a preset second duration threshold, if the comparison result indicates that the second duration is greater than the second duration threshold, it is determined that the frost layer on the surface of the first radiator is completely melted, Defrost mode can be exited.

It can be understood that when the temperature of the first radiator is greater than the second temperature value, the frost layer formed on the surface of the first radiator begins to melt. If the temperature of the first radiator is higher than the second temperature value for a long time, it means that the frost layer on the surface of the first radiator has completely melted.

In the embodiment of the present disclosure, a control component may be used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction, and at this time, the first end face of the thermoelectric semiconductor returns to cooling The second end face returns to the heating face, and the desktop air conditioner returns to the heating state.

Optionally, the controlling the switching of the electrical signal flowing through the thermoelectric semiconductor from the first current direction to the second current direction includes:

Using the control component, the electrical signal flowing through the thermoelectric semiconductor is controlled to switch from the first current direction to the second current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled to be switched off state;

The controlling the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction using the control component includes:

Using the control assembly, the current flowing through the thermoelectric semiconductor is controlled to switch from the second current direction back to the first current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled restore operation,

In the embodiment of the present disclosure, after it is determined that the first heat sink is in a frosted state, the control component can control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction, so that the thermoelectric semiconductor The cooling surface and the heating surface are reversed; and the first fan and the second fan are controlled to be turned off.

It can be understood that when the cooling surface and heating surface of the thermoelectric semiconductor are reversed, if the first fan and the second fan keep working, the second air duct will blow cold air to the user, and the airflow in the first air duct will The heating surface of the thermoelectric semiconductor is radiated to reduce the temperature of the heating surface, thereby also affecting the defrosting efficiency of the first radiator.

Based on this, the embodiment of the present disclosure controls the first fan and the second fan to turn off after the defrosting process is performed and the heating surface and the cooling surface of the thermoelectric semiconductor are reversed.

After it is determined that the frost layer on the surface of the first heat sink is completely melted, the control component is used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction, so that the thermoelectric semiconductor is The cooling surface and the heating surface are reversed again; and the operation state of the first fan and the second fan is controlled to resume, and the desktop air conditioner resumes the heating state.

It can be understood that when the cooling surface and heating surface of the thermoelectric semiconductor are reversed again, the desktop air conditioner resumes the heating state. By restoring the operation state of the first fan and the second fan, the second air duct blows hot air to the user. , the airflow circulating in the first air duct conducts heat exchange with the first end face of the thermoelectric semiconductor through the first heat sink.

An embodiment of the present disclosure provides a desktop air conditioner. As shown in FIG. 3 , FIG. 3 is a first structural schematic diagram of a desktop air conditioner according to an exemplary embodiment. The desktop air conditioner 10 includes:

A casing 11 and a thermoelectric semiconductor 12 inside the casing; wherein, the thermoelectric semiconductor 12 separates the accommodation space in the casing 11 into relatively independent first air ducts 13 and second air ducts 14;

The first air duct 13 includes:

the first fan 131;

the first heat sink 132, connected to the first end face of the thermoelectric semiconductor 12;

The first temperature detection element 133 is disposed on the first radiator 132 for detecting the temperature of the first radiator 132;

The second temperature detection element 134 is disposed at the air inlet of the casing 11 and is used to detect the ambient temperature of the environment where the casing 11 is located;

The control assembly 135 is connected to the first temperature detection element 133 , the second temperature detection element 134 and the thermoelectric semiconductor 12 , and is used for detecting the first heat sink 132 according to the first temperature detection element 133 and the ambient temperature detected by the second temperature detection element 134 to control the current direction of the electrical signal flowing through the thermoelectric semiconductor 12 .

In an embodiment of the present disclosure, the desktop air conditioner includes:

housings and thermoelectric semiconductors;

Wherein, an accommodating space is formed in the casing, the thermoelectric semiconductor is arranged in the accommodating space, and the accommodating space is divided into two relatively independent first air ducts and second air ducts; The first end face of the thermoelectric semiconductor faces the first air duct, and the second end face faces the second air duct.

In the embodiment of the present disclosure, the first air duct may be a cooling air duct; it can be understood that the heat generated by the thermoelectric semiconductor in the cooling mode or the heat generated by the thermoelectric semiconductor in the heating mode is dissipated by the airflow circulating in the first air duct. The cooling capacity is taken away; the second air duct can be an outlet air duct; it can be understood that in the heating mode, the heat generated by the second end face of the semiconductor is used, or in the cooling mode, the heat generated by the second end face of the semiconductor is used. The cooling capacity changes the temperature of the airflow circulating in the second air duct, thereby blowing the heated or cooled airflow to the user.

It should be noted that the thermoelectric semiconductor is an electronic component that uses the thermoelectric effect (Peltier effect) to generate cold and heat; after direct current is applied to the thermoelectric semiconductor, one end surface of the thermoelectric semiconductor can absorb the heat of the surrounding environment , to achieve the cooling effect, and the other end surface can release heat to the surrounding environment to achieve the heating effect; applying the thermoelectric semiconductor to the desktop air conditioner can adjust the outlet air temperature of the desktop air conditioner.

At least one air inlet and an air outlet are formed on the casing, and the air inlet and the air outlet are respectively located on different side walls of the casing.

It should be noted that the air inlet and the air outlet are respectively arranged on different side walls of the housing, so that the air blown out from the air outlet will not flow back to the air inlet, effectively avoiding airflow short circuit.

It can be understood that the air inlet and the air outlet formed on the casing can be used as the air inlet and the air outlet of the first air duct and the second air duct. Here, the air inlets of the first air duct and the second air duct may be arranged on the same side wall of the housing; or, may be arranged on different side walls of the housing; the first The air duct and the air outlet of the second air duct may be arranged on the same side wall of the housing; or may be arranged on different side walls of the housing.

The first air duct includes a first fan and a first radiator; the first fan is used to inhale the air from the air inlet and blow it to the air outlet; the first fan can be arranged in the the air inlet of the first air duct; or, the first fan may be arranged at the air outlet of the first air duct.

It should be noted that the thermoelectric semiconductor is a tool for heat transfer. When direct current is applied to the thermoelectric semiconductor, heat transfer occurs between the two end surfaces of the thermoelectric semiconductor, and the heat is transferred from one end surface to the other end surface. , resulting in a temperature difference, forming a cooling surface and a heating surface.

However, due to the resistance of the thermoelectric semiconductor itself, heat will be generated when the current flows through the thermoelectric semiconductor, which will affect the heat transfer; and the heat between the positive and negative electrodes of the thermoelectric semiconductor will also be reversely heated through the air and the semiconductor material itself. transfer. When the temperature difference between the two ends of the thermoelectric semiconductor reaches a certain value, the two heat transfer amounts are the same, and a balance point will be reached, and the positive and negative heat transfer will cancel each other; at this time, the temperature of the thermoelectric semiconductor will not continue to change.

Therefore, in the embodiment of the present disclosure, a first radiator is arranged in the first air duct, and the first radiator is connected to the first end face of the thermoelectric semiconductor; the airflow in the first air duct is sucked through the first fan , flows through the first heat sink, and indirectly exchanges heat with the first end face of the thermoelectric semiconductor, thereby changing the temperature of the first end face of the thermoelectric semiconductor; so that the temperature of the second end face of the thermoelectric semiconductor increases with the The temperature of one end surface changes correspondingly, thereby improving the cooling and heating effects of the desktop air conditioner.

Considering that when the desktop air conditioner is in the hot air mode, the first end face of the thermoelectric semiconductor generates cooling capacity; and with the release of the cooling capacity generated by the first radiator to the first end face, the temperature of the first radiator is compared with the environment. The temperature will drop significantly and there is a possibility of frost. And as the thickness of the frost layer on the first radiator increases, the heat exchange effect of the first radiator decreases significantly, which increases the temperature between the cooling surface and the heating surface of the thermoelectric semiconductor, which affects the heating effect of the thermoelectric semiconductor. Therefore, when the first radiator of the desktop air conditioner is frosted, the first radiator needs to be defrosted.

In the embodiment of the present disclosure, a first temperature detection element is provided at the first radiator, and the temperature of the first radiator is detected by using the first temperature detection element; The second temperature detection element detects the ambient temperature of the environment where the desktop air conditioner is located.

A control assembly is also arranged in the first air duct, and the control assembly is connected with the first temperature detection element, the second temperature detection element and the thermoelectric semiconductor.

The control component acquires the temperature of the first radiator detected by the first temperature detection element, and the ambient temperature detected by the second temperature detection element, according to the temperature difference between the temperature of the first radiator and the ambient temperature , to determine whether the first radiator is in a frosted state.

It should be noted that, the control component can use the temperature of the first radiator detected by the first temperature detection element to compare with the preset first temperature value, and determine whether the temperature of the first radiator meets the pre-frost condition according to the comparison result. condition. It can be understood that, if the temperature of the first radiator satisfies the pre-frost condition, it means that the first radiator is likely to form frost. After it is determined that the first radiator satisfies the pre-frost condition, it is determined whether the first radiator is frosted according to the temperature difference between the temperature of the first radiator and the ambient temperature, and then it is determined whether the first radiator needs to be frosted. The radiator is defrosted.

And, after determining that the first heat sink satisfies the pre-frost condition, the control component controls the current direction of the electrical signal based on the signal value of the electrical signal flowing through the thermoelectric semiconductor.

If, according to the signal value of the electrical signal, it is determined that the first radiator is frosted, the current direction of the electrical signal is controlled to be switched from the first current direction to the second current direction.

It should be noted that, if the electrical signal flowing through the thermoelectric semiconductor is in the first current direction, the first end surface of the thermoelectric semiconductor is a cooling surface, and the second end surface is a heating surface.

If the electrical signal flowing through the thermoelectric semiconductor is in the second current direction, the second end surface of the thermoelectric semiconductor is a heating surface, and the second end surface is a cooling surface.

By switching the electrical signal flowing through the thermoelectric semiconductor from the first current direction to the second current direction, the cooling surface and the heating surface of the thermoelectric semiconductor are reversed, and the first heat sink connected to the first heat sink is reversed. The end surface becomes a heating surface, and the heating surface is used to release heat to defrost the frost layer formed on the surface of the first radiator.

Optionally, as shown in FIG. 4 , FIG. 4 is a second schematic structural diagram of a desktop air conditioner according to an exemplary embodiment. The first air duct 13 also includes:

The third temperature detection element 136 is disposed on the first end surface of the thermoelectric semiconductor 12, and is used for detecting the temperature of the first end surface;

The control assembly 135 is connected to the third temperature detection element 136 , and is used for detecting the temperature of the first heat sink 132 detected by the first temperature detection element 133 and the temperature detected by the second temperature detection element 134 . The ambient temperature and the temperature of the first end face detected by the third temperature detection element 136 control the current direction of the electrical signal flowing through the thermoelectric semiconductor 12 .

It should be noted that after the first radiator is frosted, the heat exchange efficiency of the first radiator is significantly reduced, which leads to a sharp drop in the temperature of the cooling surface of the thermoelectric semiconductor, which affects the working performance of the thermoelectric semiconductor.

Therefore, in order to improve the accuracy of judging the frosting state of the first heat sink, the embodiment of the present disclosure may set a third temperature detection element on the first end face of the thermoelectric semiconductor, and use the third temperature detection element to detect the temperature of the first end face of the thermoelectric semiconductor. , and then according to the ambient temperature, the temperature of the first radiator and the temperature of the first end face of the thermoelectric semiconductor, it is jointly determined whether the first radiator is in a frosted state, so that it is indeed necessary to control the current of the electrical signal flowing through the thermoelectric semiconductor. The direction is adjusted to realize the defrosting treatment of the first radiator.

Optionally, the air outlet of the first air duct and the air outlet of the second air duct are respectively located on different side walls of the housing.

In the embodiment of the present disclosure, the air outlet of the first air duct and the air outlet of the second air duct may be respectively disposed on different side walls of the housing.

It can be understood that the temperature of the air output from the air outlet of the first air duct is quite different from the temperature of the air output from the air outlet of the second air duct. The air outlet of the air duct is arranged on the same side wall of the casing, so that the temperature of the airflow output by the second air duct (ie, the air outlet duct) will be affected by the temperature of the airflow output by the first air duct (ie, the cooling air duct). the effect of reducing the cooling or heating effect of the desktop air conditioner.

Optionally, as shown in Figures 3-4, the second air duct 14 includes:

the second fan 141;

The second heat sink 142 is connected to the second end face of the thermoelectric semiconductor 12;

The airflow passing through the second air duct 14 exchanges heat with the second end face of the thermoelectric semiconductor 12 via the second heat sink 142 in the second air duct 14 , and the heat-exchanged airflow is It is output from the air outlet of the second air duct 12 .

In the embodiment of the present disclosure, the second air duct includes a second fan and a second radiator, and the second fan is used to inhale the air from the air inlet and blow it to the air outlet; Two fans are placed at the air inlet of the second air duct; alternatively, the second fan can be placed at the air outlet of the second air duct.

The second radiator is connected to the second end face of the thermoelectric semiconductor, and the airflow drawn from the second air duct through the second fan flows through the second radiator and is connected to the second end of the thermoelectric semiconductor. The end face performs heat exchange indirectly, so that the temperature of the airflow circulating in the second air duct changes, so as to achieve the effect of cooling or heating.

The present disclosure also provides the following examples:

FIG. 5 is a second schematic flowchart of a defrosting control method for a desktop air conditioner according to an exemplary embodiment. As shown in FIG. 3 , the method is applied to a desktop air conditioner, and the method includes:

Step S201, obtaining the temperature of the first radiator connected to the first end face of the thermoelectric semiconductor in the desktop air conditioner;

Step S202, if the temperature of the first radiator is less than a preset first temperature value, determine that the temperature of the first radiator satisfies the pre-frost condition; record that the current temperature of the first radiator is less than the preset first temperature value; the first duration of the first temperature value;

Step S203, after the first duration is greater than a preset duration threshold, obtain the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator; determine the ambient temperature and the first heat dissipation The temperature difference between the current temperature of the device;

Step S204, obtaining the temperature of the first end face of the thermoelectric semiconductor; if the ambient temperature is greater than the preset temperature and the temperature of the first end face is less than the first temperature threshold, according to the difference between the temperature difference and the first temperature difference threshold. Comparing the results, determining whether the first radiator is in a frosted state;

Step S205, if the ambient temperature is less than the preset temperature and the temperature of the first end face is less than a second temperature threshold, determine the first heat sink according to the comparison result between the temperature difference and the second temperature difference threshold Whether it is in a frosting state; wherein, the first temperature difference threshold is greater than the second temperature difference threshold; the first temperature threshold is greater than the second temperature threshold;

Step S206, if the first heat sink is in the frosted state, use a control component connected to the thermoelectric semiconductor to control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction, and controlling the first fan in the first air duct and the second fan in the second air duct to switch to an off state; wherein the first current direction and the second current direction are opposite;

Step S207, obtaining the current temperature of the first radiator; if the current temperature of the first radiator is greater than a preset second temperature value, record that the current temperature of the first radiator is greater than the second temperature value the second duration; if the second duration is greater than a preset second duration threshold, the control component is used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the second current direction back to the first direction of the current, and control the first fan and the second fan to resume operation.

Exemplarily, as shown in FIG. 6 , FIG. 6 is a third schematic flowchart of a defrosting control method for a desktop air conditioner according to an exemplary embodiment. The method includes:

Step S301, the desktop air conditioner operates in a hot air mode;

Step S302, use the temperature sensing package of the thermoelectric semiconductor cold end radiator in the desktop air conditioner to detect the temperature T1 of the cold end radiator, if the temperature T1 of the cold end radiator is less than 0°C, enter the defrosting logic, and start timing;

Step S303, after the cold end radiator temperature T1 is less than 0°C for a duration of 30 minutes, obtain the cold end radiator temperature T1, the ambient temperature T2 and the thermoelectric semiconductor cold end temperature T3 to determine whether defrosting is required;

In this example, the temperature T1 of the cold end radiator, the ambient temperature T2 and the cold end temperature T3 of the thermoelectric semiconductor satisfy any of the following conditions, and it is determined that defrosting is required:

a: T1>4℃, T2<-6℃ and T3<-10℃;

b: T1>-2℃, T2<-10℃ and T3<-20℃;

c: T1>-7°C, T2<-15°C and T3<-20°C.

Step S304, it is determined that the cold end radiator needs to be defrosted, the positive and negative electrodes of the thermoelectric semiconductor are reversed, and the temperature T of the cold end radiator is detected in real time, and whether the defrosting is completed is determined according to the temperature T of the cold end radiator;

In this example, if it is determined that defrosting is required, the control assembly can be used to reverse the positive and negative poles of the thermoelectric semiconductor, and control both the first fan and the second fan to stop working.

It should be noted that, according to the characteristics of thermoelectric semiconductors, after the positive and negative electrodes are reversed, the original hot end of the thermoelectric semiconductor becomes the cold end to absorb heat, and the original cold end becomes the hot end to release heat and start defrosting.

Step S305 , if the temperature T of the cold end radiator is greater than 10° C. and the duration reaches 60 seconds, the defrosting is exited.

In this example, if the temperature T of the cold end radiator is greater than 10°C and the duration reaches 60 seconds, the control assembly is used to reverse the positive and negative poles of the thermoelectric semiconductor again, and the first fan and the second fan are restored to Pre-frost gear.

An embodiment of the present disclosure also provides a defrost control device for a desktop air conditioner, which is characterized by comprising:

processor;

memory for storing executable instructions;

Wherein, the processor is configured to: implement the defrosting control method for a desktop air conditioner shown in one or more of the above technical solutions when executing the executable instructions stored in the memory.

The hardware structure of a defrosting control device for a desktop air conditioner provided by an embodiment of the present disclosure is described in detail below, and the controller includes but is not limited to a server or a terminal. Optionally, the defrost control device of the desktop air conditioner may further include at least one communication interface, and each component in the defrost control device of the desktop air conditioner is coupled together through a bus system. It can be understood that the bus system is used to realize the integration of these components. communication between connections. In addition to the data bus, the bus system also includes a power bus, a control bus and a status signal bus.

The memory in the embodiment of the present disclosure is used to store various types of data for the operation of the defrost control device of the desktop air conditioner. Examples of such data include any computer program for operating on the controller, the program implementing the methods of embodiments of the present invention may be contained in memory. The memory may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

In an exemplary embodiment, the defrost control device of the desktop air conditioner may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) ), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the above method.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, which are executable by a processor of a defrost control device of a desktop air conditioner to accomplish the above method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or conventional techniques in the art not disclosed by this disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

It should be understood that the present invention is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims (11)

1. the defrosting control method of a desktop air conditioner, is characterized in that, is applied to desktop air conditioner, and described method comprises: Obtain the temperature of the first radiator connected to the first end face of the thermoelectric semiconductor in the desktop air conditioner; If the temperature of the first radiator satisfies the pre-frost condition, determining the temperature difference between the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator; Based on the temperature difference value, determining whether the first radiator is in a frosted state; If the first heat sink is in the frosted state, the control component connected to the thermoelectric semiconductor is used to control the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction; wherein, the The first current direction and the second current direction are opposite. 2. The method according to claim 1, wherein the determining whether the first radiator is in a frosting state based on the temperature difference value comprises: If the ambient temperature is greater than a preset temperature, determine whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold; If the ambient temperature is lower than the preset temperature, it is determined whether the first radiator is in a frosting state according to the comparison result between the temperature difference and the second temperature difference threshold; wherein the first temperature difference threshold is greater than the first temperature difference threshold. the second temperature difference threshold. 3. The method according to claim 2, wherein the method comprises: obtaining the temperature of the first end face of the thermoelectric semiconductor; If the ambient temperature is greater than a preset temperature, determining whether the first radiator is in a frosted state according to a comparison result between the temperature difference and the first temperature difference threshold, including: If the ambient temperature is greater than a preset temperature and the temperature of the first end face is less than a first temperature threshold, determine whether the first heat sink is in the junction according to the comparison result between the temperature difference and the first temperature difference threshold frost state; If the ambient temperature is lower than the preset temperature, determining whether the first radiator is in a frosted state according to the comparison result between the temperature difference and the second temperature difference threshold, including: If the ambient temperature is less than the preset temperature and the temperature of the first end face is less than a second temperature threshold, determine whether the first heat sink is not based on a comparison result between the temperature difference and the second temperature difference threshold in a frosted state; wherein the first temperature threshold is greater than the second temperature threshold. 4. The method according to claim 1, wherein, if the temperature of the first radiator satisfies a pre-frost condition, determining the ambient temperature where the desktop air conditioner is located and the temperature of the first radiator. The temperature difference between the current temperatures, including: If the temperature of the first radiator is less than a preset first temperature value, determining that the temperature of the first radiator satisfies the pre-frost condition; recording a first duration for which the current temperature of the first heat sink is less than the first temperature value; After the first duration is greater than a preset duration threshold, obtain the ambient temperature where the desktop air conditioner is located and the current temperature of the first radiator; A temperature difference between the ambient temperature and the current temperature of the first heat sink is determined. 5. The method according to claim 1, wherein after controlling the electrical signal flowing through the thermoelectric semiconductor to switch from the first current direction to the second current direction, the method further comprises: obtaining the current temperature of the first radiator; If the current temperature of the first radiator is greater than a preset second temperature value, recording a second duration for which the current temperature of the first radiator is greater than the second temperature value; If the second duration is greater than a preset second duration threshold, the control component is used to control the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction. 6. The method of claim 5, wherein the controlling the switching of the electrical signal flowing through the thermoelectric semiconductor from a first current direction to a second current direction comprises: Using the control component, the electrical signal flowing through the thermoelectric semiconductor is controlled to switch from the first current direction to the second current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled to be switched off state; The controlling the current flowing through the thermoelectric semiconductor to switch from the second current direction back to the first current direction using the control component includes: Using the control assembly, the current flowing through the thermoelectric semiconductor is controlled to switch from the second current direction back to the first current direction, and the first fan in the first air duct and the second fan in the second air duct are controlled restore operation. 7. A desktop air conditioner, characterized in that, comprising: a casing and a thermoelectric semiconductor inside the casing; wherein, the thermoelectric semiconductor divides the accommodating space in the casing into relatively independent first air ducts and second air ducts; The first air duct includes: the first fan; a first heat sink, connected to the first end face of the thermoelectric semiconductor; a first temperature detection element, disposed on the first radiator, for detecting the temperature of the first radiator; a second temperature detection element, disposed at the air inlet of the casing, for detecting the ambient temperature of the environment where the casing is located; a control assembly, connected to the first temperature detection element, the second temperature detection element and the thermoelectric semiconductor, for detecting the temperature of the first heat sink and the first temperature detection element based on the temperature of the first temperature detection element and the first temperature detection element The ambient temperature detected by the two temperature detection elements controls the current direction of the electrical signal flowing through the thermoelectric semiconductor. 8. The desktop air conditioner according to claim 7, wherein the first air duct further comprises: a third temperature detection element, disposed on the first end face of the thermoelectric semiconductor, for detecting the temperature of the first end face; The control assembly is connected to the third temperature detection element and is used for detecting the temperature of the first radiator according to the first temperature detection element, the ambient temperature detected by the second temperature detection element, and The temperature of the first end surface detected by the third temperature detection element controls the current direction of the electric signal flowing through the pyroelectric semiconductor. 9. The desktop air conditioner according to claim 7, wherein the second air duct comprises: second fan; a second heat sink connected to the second end face of the thermoelectric semiconductor; The airflow passing through the second air duct conducts heat exchange with the second end face of the thermoelectric semiconductor through the second heat sink in the second air duct, and the heat-exchanged airflow is removed from the second air duct. The outlet output of the air duct. 10. A defrosting control device for a desktop air conditioner, characterized in that, comprising: processor; memory for storing executable instructions; Wherein, the processor is configured to implement the defrosting control method for a desktop air conditioner according to any one of claims 1 to 6 when executing the executable instructions stored in the memory. 11. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the defrost control device of the desktop air conditioner, the defrost control device of the desktop air conditioner can execute claim 1 The defrosting control method of the desktop air conditioner described in any one of to 6.

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