Motor home refrigeration system and method

Abstract

The invention discloses a motor home refrigeration system and method, and belongs to the field of refrigeration, the power generation amount of a photovoltaic panel is estimated through position information, travel planning and weather data, the environment temperature outside a motor home and the temperature inside the motor home are monitored, and work starting and stopping of an air conditioner are controlled in real time according to different temperatures. The working mode of the air conditioner is automatically controlled to be refrigerating or heating; the generator is automatically controlled to be turned on or off according to the generating capacity of the photovoltaic panel and the electric quantity required by the air conditioner, the air conditioner and the generator do not need to be turned on or turned off manually and frequently, and difficult operation of the air conditioner due to insufficient power is avoided.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration, and in particular to a refrigeration system for a recreational vehicle and a refrigeration method implemented based on the system. Background Art

[0002] During the use of RVs, generators are used to power the air conditioners, which results in high fuel consumption. With the development of photovoltaic technology, many RVs are equipped with distributed photovoltaics on the roof, using photovoltaic power generation and generator power generation to power the air conditioners. However, since RVs are usually used on the road, they need to travel between different cities or regions. The weather and temperature in different cities or regions vary greatly. The efficiency of photovoltaic power generation varies greatly due to the light intensity and weather changes in different regions. This leads to a variety of situations, such as the electricity generated by photovoltaics alone is not enough for air conditioning, the electricity generated by photovoltaics alone is not enough for air conditioning, the air conditioner needs to be turned off or on due to temperature changes, and the generator needs to be turned on or off for power generation. This leads to the need to frequently turn on or off the air conditioner manually, and the generator or air conditioner is difficult to operate due to insufficient power. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a motorhome refrigeration system that can automatically control the opening and closing of an air conditioner and a generator.

[0004] In order to overcome the deficiencies of the prior art, a second object of the present invention is to provide a RV refrigeration method that can automatically control the opening and closing of an air conditioner and a generator.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A motorhome refrigeration system comprises a motorhome, a generator arranged on the motorhome, a photovoltaic panel located on the top of the motorhome, and an air conditioner arranged inside the motorhome, wherein the motorhome refrigeration system further comprises

[0007] A power generation estimation module, wherein the power generation estimation module obtains the real-time location information, itinerary plan and weather information of the planned itinerary of the RV, and estimates the power generation of the photovoltaic panel according to the weather information and location information;

[0008] An outdoor temperature measuring device is installed outside the RV to measure the ambient temperature outside the RV;

[0009] An in-vehicle temperature measuring device, the in-vehicle temperature measuring device is installed inside the RV to measure the internal temperature of the RV;

[0010] A control module, wherein a comfortable temperature is preset in the control module,

[0011] When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioner to cool. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to operate, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to operate, the generator is controlled to work;

[0012] When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in a closed mode, and the air conditioner and the generator are controlled to be closed;

[0013] When the internal temperature of the RV is lower than the comfort temperature, the external ambient temperature is judged. When the external ambient temperature is higher than the comfort temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfort temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

[0014] Furthermore, the power generation prediction module obtains the position change of the RV in the future period according to the itinerary planning information, thereby obtaining the change of the external ambient temperature of the RV in the future period. When the change of the external ambient temperature in the future period is greater than a preset value, the air conditioner is turned on in advance to slow down the temperature change inside the RV.

[0015] Furthermore, when the external environment temperature changes by more than a preset value over a period of time in the future, there are two situations: a sharp drop in temperature and a sharp rise in temperature. When the temperature drops sharply, the air conditioner heats in advance; when the temperature rises sharply, the air conditioner cools in advance.

[0016] Furthermore, the RV refrigeration system also includes an alarm module, which sounds an alarm when the temperature drops sharply.

[0017] Furthermore, the preset value of the external environment temperature change is that the temperature change is greater than 15° within 2 hours.

[0018] Furthermore, the RV refrigeration system also includes a battery. When the air conditioner is turned off or the power generation of the photovoltaic panel is greater than the power consumption of the air conditioner, the power of the photovoltaic panel is stored in the battery, and the electricity in the battery is used to power on-board electrical appliances.

[0019] Furthermore, the comfortable temperature is 15°-28°.

[0020] The second object of the present invention is achieved by adopting the following technical solution:

[0021] A refrigeration method for a motorhome comprises the following steps:

[0022] Estimate the power generation of the photovoltaic panels installed in the RV based on the real-time location information of the RV, the itinerary plan, and the weather information of the planned itinerary;

[0023] Get the internal temperature of the RV and the external ambient temperature of the RV;

[0024] When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioner to refrigerate. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to operate, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to operate, the generator is controlled to work;

[0025] When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in a closed mode, and the air conditioner and the generator are controlled to be closed;

[0026] When the internal temperature of the RV is lower than the comfort temperature, the external ambient temperature is judged. When the external ambient temperature is higher than the comfort temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfort temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

[0027] Furthermore, the position change of the RV in the future period is obtained based on the itinerary planning information, so as to obtain the change of the external ambient temperature of the RV in the future period. When the change of the external ambient temperature in the future period is greater than a preset value, the air conditioner is turned on in advance to slow down the temperature change inside the RV.

[0028] Compared with the prior art, the RV refrigeration system of the present invention estimates the power generation of the photovoltaic panels through location information, itinerary planning and weather data, and monitors the ambient temperature outside the RV and the temperature inside the RV, controls the opening and closing of the air conditioner in real time according to different temperatures, and automatically controls the working mode of the air conditioner to cooling or heating; automatically controls the opening or closing of the generator according to the power generation of the photovoltaic panels and the amount of electricity required for the air conditioner to work, without the need for manual frequent opening or closing of the air conditioner and the generator, thereby avoiding the air conditioner being difficult to operate due to insufficient power. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a flow chart of the RV refrigeration method. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The present application discloses a refrigeration system for a motorhome, comprising a motorhome, a generator arranged on the motorhome, a photovoltaic panel located on the top of the motorhome, and an air conditioner arranged inside the motorhome. The refrigeration system for the motorhome further comprises

[0033] The power generation estimation module obtains the real-time location information of the RV, the itinerary plan and the weather information of the planned itinerary, and estimates the power generation of the photovoltaic panel based on the weather information and location information;

[0034] An outdoor temperature measuring device is installed outside the RV to measure the ambient temperature outside the RV;

[0035] An in-vehicle temperature measuring device is installed inside the RV to measure the internal temperature of the RV;

[0036] Control module, the comfort temperature is preset in the control module,

[0037] When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioning to cool. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioning to operate, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioning to operate, the generator is controlled to work;

[0038] When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in the off mode, controlling the air conditioner and the generator to shut down;

[0039] When the temperature inside the RV is lower than the comfortable temperature, the external ambient temperature is judged. When the external ambient temperature is higher than the comfortable temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfortable temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

[0040] Since RVs are mobile and are mostly on the move during use, the power generation of the photovoltaic panels installed on the top of the RV cannot be simply calculated according to the photovoltaic power generation of the distributed roof. It needs to be predicted based on the real-time location information of the RV and the preset travel trajectory combined with weather information. Since different latitudes and altitudes have different lighting conditions, the real-time location can be determined based on the location information. The latitude and altitude at that time can be obtained, combined with the season and weather, to obtain the light intensity at that location, and thus calculate the power generation.

[0041] This application reduces energy consumption by monitoring the external environmental temperature and introducing external air through ventilation to adjust the temperature inside the RV. The RV refrigeration system also includes an environmental monitoring camera, which is installed outside the RV. The environmental monitoring camera collects images of the external environment of the RV and judges the external environment in combination with weather information. When the RV is in an environment such as a sandstorm or flying catkins, the first operating mode is turned off. In order to prevent the internal environment of the RV from being polluted, the priority of turning off the first operating mode according to the external environment is higher than the priority of introducing external air through ventilation to adjust the temperature inside the RV.

[0042] In the present application, the comfortable temperature is 15°-28°. When the indoor temperature of the RV is between 15°-28°, the RV refrigeration system is in the off mode, and the air conditioner and the generator are controlled to be off. When the internal temperature of the RV is higher than the comfortable temperature, for example, 32°, the external ambient temperature is judged. When the external ambient temperature is lower than the comfortable temperature, for example, 20°, the RV refrigeration system starts the first operating mode for ventilation and cooling; when the external ambient temperature is higher than the comfortable temperature, for example, 34°, the RV refrigeration system starts the second operating mode for cooling and cooling. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to operate, the generator is controlled to be off. When the power generation of the photovoltaic panel is not enough for the air conditioner to operate, the generator is controlled to work. When the temperature inside the RV is lower than the comfortable temperature, for example 5°, the external ambient temperature is judged. When the external ambient temperature is higher than or equal to the comfortable temperature, for example 20°, the RV refrigeration system ventilates and heats up. When the external ambient temperature is lower than the comfortable temperature, for example 3°, the RV refrigeration system starts the third operating mode for heating. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to shut down. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

[0043] Since the RV will pass through different weather areas and the temperature in different regions changes during driving, it is often the case that the vehicle enters a blizzard area during driving, and the user does not turn on the air conditioner in time to keep warm, resulting in the temperature in the car dropping too fast, frostbite or cold, and low temperature damage to the equipment in the car. When the personnel realize that the temperature drops and the air conditioner needs to be turned on, it takes a while for the temperature in the car to reach a comfortable temperature. Therefore, in this application, the refrigeration system obtains the position change of the RV in the future period of time according to the itinerary planning information, so as to obtain the change of the external ambient temperature of the RV in the future period of time. When the change of the external ambient temperature in the future period of time is greater than the preset value, the air conditioner is turned on in advance to slow down the change of the internal temperature of the RV. When the change of the external ambient temperature in the future period of time is greater than the preset value, there are two situations of drastic cooling and drastic heating. When the temperature drops sharply, the air conditioner heats in advance; when the temperature rises sharply, the air conditioner cools in advance. The RV refrigeration system also includes an alarm module, and when the temperature drops sharply, the alarm module alarms. Specifically, the temperature change of the preset value of the external ambient temperature change is greater than 15° within 2 hours.

[0044] The RV refrigeration system also includes a battery. When the air conditioner is turned off or the power generated by the photovoltaic panels is greater than the power consumption of the air conditioner, the power from the photovoltaic panels is stored in the battery, and the electricity in the battery is used to power the on-board electrical appliances.

[0045] The present application also discloses a refrigeration method for a motorhome, comprising the following steps:

[0046] Estimate the power generation of the photovoltaic panels installed in the RV based on the real-time location information of the RV, the itinerary plan, and the weather information of the planned itinerary;

[0047] Get the internal temperature of the RV and the external ambient temperature of the RV;

[0048] When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioning to cool. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioning to operate, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioning to operate, the generator is controlled to work;

[0049] When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in the off mode, controlling the air conditioner and the generator to shut down;

[0050] When the temperature inside the RV is lower than the comfortable temperature, the external ambient temperature is judged. When the external ambient temperature is higher than the comfortable temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfortable temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

[0051] Compared with the prior art, the RV refrigeration system of the present invention estimates the power generation of the photovoltaic panels through location information, itinerary planning and weather data, and monitors the ambient temperature outside the RV and the temperature inside the RV, controls the opening and closing of the air conditioner in real time according to different temperatures, and automatically controls the working mode of the air conditioner to cooling or heating; automatically controls the opening or closing of the generator according to the power generation of the photovoltaic panels and the amount of electricity required for the air conditioner to work, without the need for manual frequent opening or closing of the air conditioner and the generator, thereby avoiding the air conditioner being difficult to operate due to insufficient power.

[0052] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A motorhome refrigeration system, comprising a motorhome, a generator arranged on the motorhome, a photovoltaic panel located on the top of the motorhome, and an air conditioner arranged inside the motorhome, characterized in that: The RV refrigeration system also includes A power generation estimation module, wherein the power generation estimation module obtains the real-time location information, itinerary plan and weather information of the planned itinerary of the RV, and estimates the power generation of the photovoltaic panel according to the weather information and location information; An outdoor temperature measuring device is installed outside the RV to measure the ambient temperature outside the RV; An in-vehicle temperature measuring device, the in-vehicle temperature measuring device is installed inside the RV to measure the internal temperature of the RV; A control module, wherein a comfortable temperature is preset in the control module, When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than or equal to the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioner to refrigerate. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to operate, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to operate, the generator is controlled to work; When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in a closed mode, and the air conditioner and the generator are controlled to be closed; When the internal temperature of the RV is lower than the comfort temperature, the external ambient temperature is judged. When the external ambient temperature is higher than or equal to the comfort temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfort temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

2. The RV refrigeration system according to claim 1, characterized in that: The power generation estimation module obtains the position change of the RV in the future period according to the itinerary planning information, thereby obtaining the change of the external ambient temperature of the RV in the future period. When the change of the external ambient temperature in the future period is greater than a preset value, the air conditioner is turned on in advance to slow down the temperature change inside the RV.

3. The RV refrigeration system according to claim 2, characterized in that: When the external environment temperature changes more than a preset value in the future, there are two situations: a sharp drop in temperature and a sharp rise in temperature. When the temperature drops sharply, the air conditioner heats in advance; when the temperature rises sharply, the air conditioner cools in advance.

4. The RV refrigeration system according to claim 3, characterized in that: The RV refrigeration system also includes an alarm module, which sounds an alarm when the temperature drops sharply.

5. The RV refrigeration system according to claim 2, characterized in that: The preset value of the external environment temperature change is that the temperature change is greater than 15° within 2 hours.

6. The RV refrigeration system according to claim 1, characterized in that: The RV refrigeration system also includes a battery. When the air conditioner is turned off or the power generation of the photovoltaic panel is greater than the power consumption of the air conditioner, the power of the photovoltaic panel is stored in the battery, and the electricity in the battery is used to power on-board electrical appliances.

7. The RV refrigeration system according to claim 1, characterized in that: The comfortable temperature is 15°-28°.

8. A refrigeration method for a motorhome, characterized in that: The following steps are involved: Estimate the power generation of the photovoltaic panels installed in the RV based on the real-time location information of the RV, the itinerary plan, and the weather information of the planned itinerary; Get the internal temperature of the RV and the external ambient temperature of the RV; When the temperature inside the RV is higher than the comfortable temperature, the external environment temperature is judged. When the external environment temperature is lower than or equal to the comfortable temperature, the RV refrigeration system starts the first operation mode, which is the ventilation mode; when the external environment temperature is higher than the comfortable temperature, the RV refrigeration system starts the second operation mode, which is the cooling mode, and controls the air conditioner to cool. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to operate, the generator is controlled to be turned off, and when the power generation of the photovoltaic panel is not enough for the air conditioner to operate, the generator is controlled to work; When the temperature inside the RV is within the comfortable temperature range, the RV refrigeration system is in a closed mode, and the air conditioner and the generator are controlled to be closed; When the internal temperature of the RV is lower than the comfort temperature, the external ambient temperature is judged. When the external ambient temperature is higher than or equal to the comfort temperature, the RV refrigeration system starts the first operating mode. When the external ambient temperature is lower than the comfort temperature, the RV refrigeration system starts the third operating mode. The third operating mode is the heating mode, which controls the air conditioner to heat. At this time, when the power generation of the photovoltaic panel is sufficient for the air conditioner to run, the generator is controlled to be turned off. When the power generation of the photovoltaic panel is not enough for the air conditioner to run, the generator is controlled to work.

9. The RV cooling method according to claim 8, characterized in that: The position change of the RV in the future period is obtained according to the itinerary planning information, so as to obtain the change of the external ambient temperature of the RV in the future period. When the change of the external ambient temperature in the future period is greater than a preset value, the air conditioner is turned on in advance to slow down the temperature change inside the RV.

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