Air conditioner with refrigerant cooling variable-frequency controller

Abstract

An indoor heat exchanger is provided with two parallel pipelines, one pipeline is connected with a first one-way valve, and the other pipeline is connected with a capillary tube and is communicated with an inlet and an outlet of a cooling module of the variable-frequency controller; the outdoor heat exchanger is provided with two parallel pipelines, one pipeline is connected with a second one-way valve, and the other pipeline is connected with a second capillary tube and communicated with an inlet and an outlet of the variable-frequency controller. The variable frequency controller is connected between the capillary tube I and the capillary tube II; a first connector and a second connector of the four-way valve are connected with an inlet and an outlet of the compressor respectively, a third connector is connected with the indoor heat exchanger, and a fourth connector is connected with the outdoor heat exchanger. When the air conditioner runs, the refrigerant is used for effectively reducing the temperature of the variable-frequency controller, it is guaranteed that the variable-frequency controller does not have moisture condensation during cooling, the refrigeration running capacity is improved, the reliability of the controller is greatly guaranteed, operation is easy, and the fault rate is extremely low.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner with a refrigerant temperature-lowering frequency conversion controller. Background Art

[0002] When a traditional variable frequency air conditioner is turned on and running, it relies on the circulating air from the outdoor unit to cool the variable frequency controller. When the ambient temperature is high, it cannot cool down effectively, causing the air conditioner to shut down, which affects its service life. Summary of the invention

[0003] The main purpose of the present invention is to provide an air conditioner with a refrigerant cooling frequency conversion controller, aiming to solve the existing technical problems.

[0004] To achieve the above object, the present invention provides an air conditioner with a refrigerant temperature-lowering frequency conversion controller, comprising a compressor, an indoor heat exchanger, an outdoor heat exchanger, a four-way valve, a capillary tube 1 and a capillary tube 2, and a frequency conversion controller;

[0005] The indoor heat exchanger has two parallel pipelines, one of which is connected to the first one-way valve, and the other is connected to the capillary tube and the inlet and outlet of the frequency conversion controller cooling module;

[0006] The outdoor heat exchanger has two parallel pipelines, one of which is connected to the second one-way valve, and the other is connected to the capillary tube 2 and connected to the inlet and outlet of the frequency conversion controller;

[0007] The frequency conversion controller is connected between capillary tube 1 and capillary tube 2, and is connected to the indoor heat exchanger or the outdoor heat exchanger through capillary tube 1 and capillary tube 2 or a one-way valve, wherein the frequency conversion controller cools down through a refrigerant cooling module;

[0008] The first interface and the second interface of the four-way valve are respectively connected to the inlet and outlet of the compressor, the third interface is connected to the indoor heat exchanger, and the fourth interface is connected to the outdoor heat exchanger.

[0009] Furthermore, the flow direction of the first one-way valve is that the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger.

[0010] Furthermore, the flow direction of the second one-way valve is that the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger.

[0011] The beneficial effects of the present invention are embodied in:

[0012] The present invention uses refrigerant to effectively reduce the temperature of the frequency conversion controller when the air conditioner is running, and ensures that the frequency conversion controller does not condense when the temperature is lowered (if condensation occurs during cooling, the safety of the electrical parts will be greatly reduced), thereby improving the refrigeration operation capacity, greatly ensuring the reliability of the controller, and the operation is simple and easy with a very low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the system flow chart in the refrigeration mode of the present invention;

[0014] Figure 2 It is a schematic diagram of the system flow chart in the heating mode of the present invention.

[0015] Description of reference numerals:

[0016] 1. Compressor; 2. Indoor heat exchanger; 3. Outdoor heat exchanger; 4. Four-way valve; 5. Capillary tube 1; 6. Frequency conversion controller; 7. First check valve; 8. Second check valve; 9. Capillary tube 2. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 and 2 , the present invention provides an air conditioner with a refrigerant cooling frequency conversion controller, comprising a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3, a four-way valve 4, a capillary tube 5 and a frequency conversion controller 6;

[0019] The indoor heat exchanger 2 has two parallel pipelines, one of which is connected to the first one-way valve 7, and the other is connected to the capillary tube 1 5 and connected to the inlet and outlet of the frequency conversion controller cooling module 6;

[0020] The outdoor heat exchanger 3 has two parallel pipelines, one of which is connected to the second one-way valve 8, and the other is connected to the capillary tube 9 and connected to the inlet and outlet of the frequency conversion controller 6;

[0021] The frequency conversion controller 6 is connected between the two capillaries 5 and 9, and is connected to the indoor heat exchanger 2 or the outdoor heat exchanger 3 through the capillaries 5 and 9 or the one-way valve respectively;

[0022] The first and second interfaces of the four-way valve 4 are respectively connected to the inlet and outlet of the compressor 1 , the third interface is connected to the indoor heat exchanger 2 , and the fourth interface is connected to the outdoor heat exchanger 3 .

[0023] Specifically, the flow direction of the first one-way valve 7 is that the refrigerant flows from the indoor heat exchanger 2 to the outdoor heat exchanger 3 .

[0024] Specifically, the flow direction of the second one-way valve 8 is that the refrigerant flows from the outdoor heat exchanger 3 to the indoor heat exchanger 2 .

[0025] Specifically, the frequency conversion controller 6 cools down the temperature through the refrigerant cooling module.

[0026] The refrigerant used in this embodiment to cool the frequency conversion controller 6 is always guaranteed to be a high-pressure medium-temperature refrigerant, which avoids the refrigerant being lower than the ambient dew point temperature, that is, it is guaranteed that no condensation occurs when cooling the frequency conversion controller 6, and the reliability of the operation of the frequency conversion controller 6 is guaranteed. In addition, when using the refrigerant to cool the frequency conversion controller 6, only two one-way valves and two capillary tubes are used, and the flow direction of the refrigerant is controlled by the two one-way valves, ensuring that the high-pressure medium-temperature refrigerant can flow through the cooling module regardless of the heating or cooling mode.

[0027] Furthermore, because the present application can well reduce the temperature of the frequency conversion controller 6, the present invention can continue to provide strong cooling at a higher ambient temperature without tripping the machine, greatly improving the high-temperature cooling capacity of the air conditioner. Moreover, the control method is very simple, and no additional control action is required, and only the one-way valve automatically controls the flow direction of the refrigerant according to the high and low pressure difference of the system refrigerant.

[0028] like Figure 1 and Figure 2 As shown, regardless of the cooling or heating mode, according to the refrigerant flow direction changed by the four-way valve selection, all the condensed high-pressure and medium-temperature refrigerants flow into the cooling module of the frequency converter, and then enter the low-pressure area for evaporation after passing through the capillary throttling, and flow into the compressor after the evaporation process is completed.

[0029] This embodiment uses refrigerant to effectively reduce the temperature of the frequency conversion controller 6 when the air conditioner is running, and ensures that no condensation occurs on the frequency conversion controller 6 when the temperature is lowered (if condensation occurs during cooling, the safety of the electrical parts will be greatly reduced), thereby improving the refrigeration operation capacity, greatly ensuring the reliability of the frequency conversion controller 6, and the operation is simple and easy with a very low failure rate.

[0030] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioner with a refrigerant cooling frequency conversion controller, characterized in that: It comprises a compressor (1), an indoor heat exchanger (2), an outdoor heat exchanger (3), a four-way valve (4), a capillary tube 1 (5), a capillary tube 2 (9) and a frequency conversion controller (6); The indoor heat exchanger (2) has two parallel pipelines, one of which is connected to the first one-way valve (7) and the other is connected to the capillary tube 1 (5) and connected to the inlet and outlet of the frequency conversion controller cooling module (6); The outdoor heat exchanger (3) has two parallel pipelines, one of which is connected to the second one-way valve (8) and the other is connected to the second capillary tube (9) and connected to the inlet and outlet of the frequency conversion controller (6); The frequency conversion controller (6) is connected between the capillary tube 1 (5) and the capillary tube 2 (9), and is connected to the indoor heat exchanger (2) or the outdoor heat exchanger (3) respectively through the capillary tube 1 (5) and the capillary tube 2 (9) or the one-way valve, wherein the frequency conversion controller (6) cools down the temperature through the refrigerant cooling module; The first and second interfaces of the four-way valve (4) are respectively connected to the inlet and outlet of the compressor (1), the third interface is connected to the indoor heat exchanger (2), and the fourth interface is connected to the outdoor heat exchanger (3).

2. An air conditioner with a refrigerant cooling frequency conversion controller as claimed in claim 1, characterized in that: The flow direction of the first one-way valve (7) is that the refrigerant flows from the indoor heat exchanger (2) to the outdoor heat exchanger (3).

3. The air conditioner with a refrigerant cooling frequency conversion controller as claimed in claim 1, characterized in that: The flow direction of the second one-way valve (8) is that the refrigerant flows from the outdoor heat exchanger (3) to the indoor heat exchanger (2).

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