Device and method for enabling common split air conditioner to have annual refrigeration function

Abstract

The invention relates to a device and method for enabling a common split air conditioner to have a whole-year refrigeration function, the device comprises an air conditioner indoor unit and an air conditioner outdoor unit, and the device further comprises a heat conduction indoor unit and a heat conduction outdoor unit, and the heat conduction indoor unit is arranged on the indoor side and used for collecting indoor heat; the heat conduction outdoor unit is arranged at an air inlet of the air conditioner outdoor unit. When the outdoor environment is low, the heat conduction inner unit collects indoor heat, and the heat conduction outer unit conducts the indoor heat to the air conditioner outer unit; the heat conduction inner unit comprises a heat conduction inner unit shell, a circulating pump, a first heat exchanger and a first fan. The heat conduction outer unit comprises a heat conduction outer unit shell, a second heat exchanger and an air inducing device. And a heat exchange pipeline is communicated between the first heat exchanger and the second heat exchanger. The heat conduction indoor unit and the heat conduction outdoor unit can collect indoor heat in the low-temperature environment and conduct the indoor heat to the air conditioner outdoor unit, so that a common air conditioner can normally operate in the extremely low-temperature environment, and the technical problem that an existing air conditioner cannot work in the low-temperature environment due to the fact that the pressure of a condenser is too low is solved.

Description

BACKGROUND

[0001] In northern regions, especially in the room of heat generating equipment, heat needs to be discharged all year round. However, in the northwest where there is a lot of dust and a lot of salt spray on the coast, due to the poor environmental conditions, it is inconvenient to maintain frequently, so it is necessary to configure an air conditioner with all-year cooling to isolate dust and salt spray and reduce the frequency of maintenance. However, when the outdoor ambient temperature is lower than -10℃, the ordinary air conditioner will malfunction due to the low condenser pressure, and cannot work normally. Even the frequency conversion air conditioner cannot realize cooling when the outdoor ambient temperature is lower than -15℃. Especially in the north, the temperature in winter often drops to -30℃ to -40℃, and the ordinary air conditioner basically cannot run.

[0002] Therefore, how to enable the ordinary air conditioner to realize stable cooling in extremely low temperature environment is of great practical significance. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the shortcomings in the prior art, and to provide a device and method for enabling an ordinary split air conditioner to have all-year cooling function. By designing the heat-conducting indoor unit and the heat-conducting outdoor unit, the ordinary split air conditioner can still operate normally in extremely low temperature environment, solving the technical problem that the existing air conditioner cannot work in low temperature environment due to the low condenser pressure, and meeting the cooling demand of places in northern regions and other places all year round.

[0004] In order to solve the above technical problems, the present application provides a device for enabling an ordinary split air conditioner to have all-year cooling function, comprising an air conditioner indoor unit and an air conditioner outdoor unit, wherein the device comprises a heat-conducting indoor unit and a heat-conducting outdoor unit, the heat-conducting indoor unit is arranged on the indoor side for collecting indoor heat, and the heat-conducting outdoor unit is arranged at the air inlet of the air conditioner outdoor unit; when the outdoor environment is low, the heat-conducting indoor unit collects the indoor heat, and the heat-conducting outdoor unit conducts the indoor heat to the air conditioner outdoor unit. The heat-conducting indoor unit comprises a heat-conducting indoor unit shell, a circulating pump, a first heat exchanger and a first fan; the circulating pump and the first heat exchanger are arranged in the heat-conducting indoor unit shell, the heat-conducting indoor unit shell is provided with an air inlet and an air outlet opposite to each other, the first heat exchanger is arranged at the air inlet of the heat-conducting indoor unit shell, and the first fan is arranged at the air outlet of the heat-conducting indoor unit shell. The heat-conducting outdoor unit comprises a heat-conducting outdoor unit shell, a second heat exchanger and an air guiding device, the heat-conducting outdoor unit shell has an air guiding channel communicating with the air inlet of the air conditioner outdoor unit, the second heat exchanger is arranged at the front end of the air guiding channel, and the air guiding device is arranged on the heat-conducting outdoor unit shell and communicates with the air guiding channel, and the air guiding device is located behind the second heat exchanger. The first heat exchanger and the second heat exchanger are communicated by a heat exchange pipeline, and the first heat exchanger, the second heat exchanger and the heat exchange pipeline are filled with refrigerant, and a circulating pump is arranged on the heat exchange pipeline.

[0005] In one embodiment of the present application, a pressure stabilizing tank is arranged on the front pipeline of the liquid inlet of the circulating pump.

[0006] In one embodiment of the present application, the air guiding device is an air valve.

[0007] In one embodiment of the present application, a second air fan is arranged in the air guiding channel, and the second air fan is located behind the air valve.

[0008] In a second aspect, to solve the above technical problems, the present application provides a method for enabling a general split air conditioner to have a whole-year refrigeration function by using the device of the first aspect, and the method comprises the following steps: The heat conducting indoor unit is installed indoors, the heat conducting outdoor unit is installed on the air conditioner outdoor unit, the air guiding channel of the heat conducting outdoor unit shell is communicated with the air inlet of the air conditioner outdoor unit, and the heat conducting indoor unit and the heat conducting outdoor unit are connected by a heat exchange pipeline; When the outdoor environment temperature is low, the circulating pump and the first air fan are started, the hot air in the room flows through the first heat exchanger under the action of the first air fan, the refrigerant in the first heat exchanger absorbs the heat of the hot air, and the refrigerant after absorbing the heat flows into the second heat exchanger under the driving of the circulating pump; The outdoor cold air enters the air guiding channel under the action of the outdoor fan of the air conditioner outdoor unit, and flows through the second heat exchanger, the outdoor cold air exchanges heat with the second heat exchanger, and then enters the air conditioner outdoor unit, thereby warming the compressor and the condenser in the outdoor, and the cold energy of the outdoor cold air also enters the indoor side through the circulation of the refrigerant; When the outdoor temperature is high, the heat conducting indoor unit is closed, and the air guiding device is started to further increase the air inlet amount of the air guiding channel.

[0009] In one embodiment of the present application, when the air inlet side of the air conditioner outdoor unit has sufficient installation space, the air guiding channel of the heat conducting outdoor unit shell is arranged in a straight line, and the air guiding device is an air valve at this time; When the outdoor temperature is low, the air valve is in a closed state, and when the outdoor temperature is high, the air valve is opened, and the outdoor air directly enters the air valve to increase the air inlet amount of the air guiding channel.

[0010] In one embodiment of the present application, when the installation space of the air inlet side of the air conditioner outdoor unit is narrow, the air guiding channel of the heat conducting outdoor unit shell is arranged in an L shape and is bent to one side, and the air guiding device is an air valve and a second air fan at this time. When the outdoor temperature is low, the second fan is closed, when the outdoor temperature is high, the air valve and the second fan are opened, and the outdoor air directly enters the air valve to increase the air inlet of the air guide channel.

[0011] In an embodiment of the present application, when the outdoor temperature is high, the first fan and the circulating pump do not operate.

[0012] The above technical scheme of the present application has the following beneficial effects compared with the prior art: The all-year refrigeration device based on a split air conditioner provided by the present application can effectively conduct indoor heat to the air conditioner outdoor unit in a low-temperature environment, so that the air conditioner can normally operate in an extremely low-temperature environment, solves the technical problem that the existing air conditioner cannot work due to excessively low condenser pressure in a low-temperature environment, and meets the use requirements of places with all-year refrigeration needs; and the device has a reasonable structure and is easy to integrate, can be improved without changing the original air conditioner system, realizes function improvement by adding the heat-conducting indoor unit and the heat-conducting outdoor unit, does not need to make large-scale modification to the existing air conditioner, reduces the cost and implementation difficulty, and has good scalability and compatibility.

[0013] The working method of the all-year refrigeration device based on a split air conditioner provided by the present application realizes efficient refrigeration operation of the ordinary split air conditioner in different environments throughout the year by reasonably controlling the components of the device under different outdoor temperature conditions, heats the air conditioner outdoor unit in a low-temperature environment through circulation and heat conduction of refrigerant, ensures normal operation of the air conditioner outdoor unit, avoids use of additional heating equipment, saves energy; in a high-temperature environment, outdoor air is introduced by the air guide device to dissipate heat, maintains stable operation of the air conditioner outdoor unit, ensures that the air conditioner system can efficiently refrigerate throughout the year, and meets the all-year refrigeration needs. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings.

[0015] Figure 1 FIG. 1 is a structural schematic diagram of the all-year refrigeration device based on a split air conditioner in Embodiment One of the present application; Figure 2 FIG. 2 is a structural schematic diagram of the all-year refrigeration device based on a split air conditioner in Embodiment Two of the present application; Figure 3 FIG. 3 is a refrigerant heat exchange circulation flowchart of the heat-conducting indoor unit and the heat-conducting outdoor unit in the split air conditioner in a low-temperature refrigeration process in the present application; Figure 4 FIG. 4 is a heat exchange circulation flowchart in an air conditioner refrigeration process in an outdoor low-temperature environment in Embodiment One of the present application; Figure 5 The figure is a heat exchange circulation process diagram in the air conditioning refrigeration process in the outdoor non-low temperature environment in the embodiment one of the present application; Figure 6 The figure is a heat exchange circulation process diagram in the air conditioning refrigeration process in the outdoor low temperature environment in the embodiment two of the present application; Figure 7 The figure is a heat exchange circulation process diagram in the air conditioning refrigeration process in the outdoor non-low temperature environment in the embodiment two of the present application; The figure is a heat exchange circulation process diagram in the air conditioning refrigeration process in the outdoor non-low temperature environment in the embodiment two of the present application; DETAILED DESCRIPTION

[0016] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not limiting the present application. Embodiment one

[0017] Referring to Figure 1 The present application provides a device for making ordinary split air conditioner have all-year refrigeration function, comprising air conditioner indoor unit 1 and air conditioner outdoor unit 2, the device comprises heat conduction indoor unit 3 and heat conduction outdoor unit 4, the heat conduction indoor unit 3 is arranged on indoor side for collecting indoor heat; the heat conduction outdoor unit 4 is arranged at the air inlet of the air conditioner outdoor unit 4; when the outdoor environment is low, the heat conduction indoor unit 3 collects the indoor heat, and the heat conduction outdoor unit 4 conducts the indoor heat to the air conditioner outdoor unit 2. The heat conduction indoor unit 3 comprises heat conduction indoor unit shell 31, circulating pump 32, first heat exchanger 33 and first fan 34; the circulating pump 32 and the first heat exchanger 33 are arranged in the heat conduction indoor unit shell 31, the heat conduction indoor unit shell 31 is relatively provided with air inlet and air outlet, the first heat exchanger 33 is arranged at the air inlet of the heat conduction indoor unit shell 31, and the first fan 34 is arranged at the air outlet of the heat conduction indoor unit shell 31. Preferably, the heat-conducting outdoor unit 4 comprises a heat-conducting outdoor unit shell 41, a second heat exchanger 42 and an air guiding device, the heat-conducting outdoor unit shell 41 has an air guiding channel 40 connected to the air inlet of the air conditioner outdoor unit 2, the second heat exchanger 42 is arranged at the front end of the air guiding channel 40, and the air guiding device is arranged on the heat-conducting outdoor unit shell 41 and connected to the air guiding channel 40, and the air guiding device is located behind the second heat exchanger 42. Further, a sealing member 100 is arranged at the connection between the heat-conducting outdoor unit shell 41 and the air conditioner outdoor unit 2, and preferably, the sealing member 100 comprises a sealing plate and a sealing sponge.

[0018] A heat exchange pipeline 43 is arranged between the first heat exchanger 33 and the second heat exchanger 42, and the first heat exchanger 33, the second heat exchanger 42 and the heat exchange pipeline 43 are filled with a refrigerant, preferably ethylene glycol solution, and a circulating pump 32 is arranged on the heat exchange pipeline 43.

[0019] Further, a pressure stabilizing tank 35 is arranged at the front end of the liquid inlet pipeline of the circulating pump 32. The pressure stabilizing tank 35 can play a buffering role, can effectively adjust the pressure fluctuation of the refrigerant in the circulation process, so as to ensure that the flow of the refrigerant in the first heat exchanger 33 and the second heat exchanger 42 is more uniform, can also avoid damage or abnormal operation of the equipment caused by excessive pressure change, reduce cavitation, prolong the service life of the equipment, and improve the reliability and safety of the system.

[0020] When the air inlet side of the air conditioner outdoor unit 2 has sufficient installation space, the air guiding channel 40 of the heat-conducting outdoor unit shell 41 is arranged in a straight line, and at this time, the air guiding device is a wind valve 5. When the outdoor temperature is low, the new air with large air volume and low temperature can reduce the working pressure of the refrigerant in the condenser 24, at this time, the wind valve 5 is closed, and only the outdoor fan 22 of the air conditioner outdoor unit 2 is used to supply airflow to flow through the condenser 24, and the airflow with small air volume can be effectively heated by the second heat exchanger 42, so that the temperature of the airflow is high, and the working pressure of the refrigerant in the condenser 24 can be effectively maintained stable. When the outdoor temperature is high, the condenser 24 needs large air volume to take away its heat during the refrigeration process of the air conditioner, at this time, the wind valve 5 is opened, the outdoor air directly enters the wind valve 5, the air volume of the air guiding channel 40 is increased, and the heat of the condenser 24 can be taken away; on the other hand, the arrangement of the wind valve 5 also reduces the air flow passing through the second heat exchanger 42, so as to ensure the cleanliness of the second heat exchanger 42. It should be noted that when the outdoor temperature is high, the first fan 34 and the circulating pump 32 do not work.

[0021] The air conditioner indoor unit 1 in the embodiment comprises an indoor unit shell 11, an indoor fan 12 and an evaporator 13; the indoor fan 12 is arranged on the outside of the indoor unit shell 11, and the evaporator 13 is arranged in the indoor unit shell 11; the air conditioner outdoor unit 2 comprises an outdoor unit shell 21, an outdoor fan 22, a compressor 23 and a condenser 24, the outdoor fan 22 is arranged on the outside of the outdoor unit shell 21, the compressor 23 and the condenser 24 are both arranged in the indoor unit shell 21, and the evaporator 13 is connected with the compressor 23 and the condenser 24 through a connecting pipeline to form a refrigerant circulation loop. A throttling element 14 is arranged on the output pipeline of the evaporator 13 in the indoor unit shell 11 and on the output pipeline of the condenser 13 in the outdoor unit shell 21, and the throttling element 14 is preferably a capillary tube or an expansion valve.

[0022] When the air conditioning system starts the refrigeration mode, the indoor fan 12 starts to operate to suck indoor air into the air conditioner indoor unit 1, the sucked indoor air flows through the evaporator 13, the refrigerant in the evaporator 13 vaporizes to absorb heat in the air, thereby reducing the temperature of the air to achieve the purpose of refrigeration; the refrigerant after absorbing heat is transported to the air conditioner outdoor unit 2 through the connecting pipeline, enters the compressor 23 for the next compression process, and the air cooled by the evaporator 13 is blown back to the indoor by the indoor fan 12 to realize the refrigeration cycle of the indoor air, and this process is repeated continuously to gradually reduce the indoor temperature to achieve the set refrigeration effect; through the cooperation of the heat-conducting indoor unit 3 and the heat-conducting outdoor unit 4, the indoor heat is effectively conducted to the air conditioner outdoor unit 2 in an extremely low temperature environment, so that the air conditioner can normally operate in an extremely low temperature environment, solving the technical problem that the existing air conditioner cannot work in a low temperature environment due to the low pressure of the condenser 24, and meeting the use requirements of places with refrigeration requirements all year round; and the device has a reasonable structure and is easy to integrate, can realize function improvement only by adding the heat-conducting indoor unit 2 and the heat-conducting outdoor unit 3, does not need to make large-scale modification to the existing air conditioner, reduces the cost and implementation difficulty, and has good scalability and compatibility.

[0023] Figure 4 And 5 It is shown that when the air guide device is the air valve 5, the air conditioning heat exchange circulation process of the all-year refrigeration device in the low temperature state and the non-low temperature state. Embodiment two

[0024] As Figure 2 shown, based on the structure of the device for enabling the ordinary split air conditioner to have the all-year refrigeration function in embodiment one, when the installation space of the air inlet side of the air conditioner outdoor unit 2 is narrow, the air guide channel 40 of the heat-conducting outdoor unit shell 41 is arranged in an L shape and is bent to one side, at this time, the air guide device comprises the air valve 5 and the second fan 6, the second fan 6 is arranged on the inner wall of the air guide channel 40 and is located behind the air valve 5.

[0025] When the outdoor temperature is low, the second fan 6 is closed; when the outdoor temperature is high, the air valve 5 and the second fan 6 are opened, the outdoor air directly enters from the air valve 5, and the air inlet of the air inlet channel 40 is increased; because the air duct is narrow, and needs to pass through the second heat exchanger 42 and the condenser 24, the internal resistance of the air duct is high, and therefore the second fan 6 is additionally increased to regulate the air volume entering the air conditioner outdoor unit 2.

[0026] It should be noted that when the outdoor temperature is high, the first fan 34 and the circulating pump 32 do not operate.

[0027] Figure 6 And Figure 7 It is shown that when the air inlet device is the air valve 5 and the second fan 6, the air conditioning heat exchange cycle process of the all-year refrigeration device in the low-temperature state and the non-low-temperature state. Example Three

[0028] As Figure 3 It is shown that the present application provides a method for enabling a general split air conditioner to have all-year refrigeration function, comprising the following steps: The heat-conducting indoor unit 3 is installed indoors, the heat-conducting outdoor unit 4 is installed on the air conditioner outdoor unit 2, the air inlet channel 40 of the heat-conducting outdoor unit shell 41 is communicated with the air inlet of the air conditioner outdoor unit 2, and the heat-conducting indoor unit 3 and the heat-conducting outdoor unit 4 are connected through the heat exchange pipeline 43; When the outdoor environment temperature is low, the circulating pump 32 and the first fan 34 are opened, the hot air in the room flows through the first heat exchanger 33 under the action of the first fan 34, the refrigerant in the first heat exchanger 33 absorbs the heat of the hot air, and under the driving of the circulating pump 32, the refrigerant after absorbing the heat flows into the second heat exchanger 42; The outdoor cold air enters the air inlet channel 40 under the action of the outdoor fan of the air conditioner outdoor unit 2, and flows through the second heat exchanger 42, the outdoor cold air exchanges heat with the second heat exchanger 42, and then enters the air conditioner outdoor unit 2, thereby warming the compressor 23 and the condenser 24 outside, and the cold energy of the outdoor cold air also enters the indoor side through the circulation of the refrigerant; When the outdoor temperature is high, the heat-conducting indoor unit 3 is closed, and the air inlet device is started, further increasing the air inlet of the air inlet channel 40.

[0029] Obviously, the above examples are only examples for clearly illustrating, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A device for enabling a common split air conditioner to have a full-year refrigeration function, comprising an air conditioner indoor unit and an air conditioner outdoor unit, characterized in that: The device further comprises a heat-conducting indoor unit and a heat-conducting outdoor unit, the heat-conducting indoor unit is arranged on the indoor side for collecting indoor heat; the heat-conducting outdoor unit is arranged at the air inlet of the air conditioner outdoor unit; When the outdoor environment is relatively low, the heat-conducting indoor unit collects the indoor heat, and the heat-conducting outdoor unit conducts the indoor heat to the air conditioner outdoor unit; The heat-conducting indoor unit comprises a heat-conducting indoor unit shell, a circulating pump, a first heat exchanger and a first fan; The circulating pump and the first heat exchanger are arranged in the heat-conducting indoor unit shell, the heat-conducting indoor unit shell is oppositely provided with an air inlet and an air outlet, the first heat exchanger is arranged at the air inlet of the heat-conducting indoor unit shell, and the first fan is arranged at the air outlet of the heat-conducting indoor unit shell; The heat-conducting outdoor unit comprises a heat-conducting outdoor unit shell, a second heat exchanger and an air guiding device, the heat-conducting outdoor unit shell has an air guiding channel which is communicated with the air inlet of the air conditioner outdoor unit, the second heat exchanger is arranged at the front end of the air guiding channel, and the air guiding device is arranged on the heat-conducting outdoor unit shell and communicated with the air guiding channel and located behind the second heat exchanger; The first heat exchanger and the second heat exchanger are communicated through a heat exchange pipeline, the first heat exchanger, the second heat exchanger and the heat exchange pipeline are filled with refrigerant, and a circulating pump is arranged on the heat exchange pipeline.

2. The device of claim 1, wherein the device is characterized by: A pressure stabilizing tank is arranged on the front end pipeline of the liquid inlet of the circulating pump.

3. The device of claim 1, wherein the device is characterized by: The air guiding device is an air valve.

4. The device of claim 3, wherein the device is characterized by: A second fan is arranged in the air guiding channel and located behind the air valve.

5. A method for making a conventional split air conditioner have a full-year refrigeration function by using the device according to any one of claims 1-4, characterized in that, The method comprises the following steps: The heat-conducting indoor unit is installed indoors, the heat-conducting outdoor unit is installed on the air conditioner outdoor unit, the air guiding channel of the heat-conducting outdoor unit shell is communicated with the air inlet of the air conditioner outdoor unit, and the heat-conducting indoor unit and the heat-conducting outdoor unit are connected through the heat exchange pipeline; When the outdoor environment temperature is relatively low, the circulating pump and the first fan are started, the hot air in the room flows through the first heat exchanger under the action of the first fan, the refrigerant in the first heat exchanger absorbs the heat of the hot air, and the refrigerant after absorbing the heat flows into the second heat exchanger under the drive of the circulating pump; The outdoor cold air enters the air guiding channel under the action of the outdoor fan of the air conditioner outdoor unit, flows through the second heat exchanger, exchanges heat with the second heat exchanger, and then enters the air conditioner outdoor unit, thereby warming the compressor and the condenser in the outdoor, and the cold energy of the outdoor cold air also enters the indoor side through the circulation of the refrigerant; When the outdoor temperature is relatively high, the heat-conducting indoor unit is closed, and the air guiding device is started to further increase the air inlet amount of the air guiding channel.

6. The method for enabling the ordinary split air conditioner to have the whole-year refrigeration function according to claim 5, characterized in that: When the air inlet side of the air conditioner outdoor unit has sufficient installation space, the air guiding channel of the heat-conducting outdoor unit shell is arranged in a straight line, and the air guiding device is an air valve at this time; When the outdoor temperature is relatively low, the air valve is in a closed state, when the outdoor temperature is relatively high, the air valve is opened, and the outdoor air directly enters the air valve to increase the air inlet amount of the air guiding channel.

7. The method for enabling the ordinary split air conditioner to have the whole-year refrigeration function according to claim 5, characterized in that: When the air conditioner outdoor unit air inlet side installation space is narrow, the heat conduction outdoor unit shell air inlet channel is L-shaped and is arranged to bend to one side, at this time the air inlet device is a wind valve and a second fan; When the outdoor temperature is low, the second fan is closed, when the outdoor temperature is high, the wind valve and the second fan are opened, outdoor air directly enters from the wind valve, and the air inlet amount of the air inlet channel is increased.

8. The method of claim 5, wherein the method further comprises: providing a bypass passage between the indoor heat exchanger and the outdoor heat exchanger; and providing a bypass valve to open and close the bypass passage. When the outdoor temperature is high, the first fan and the circulating pump do not operate.

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