Air conditioning system

Abstract

The utility model relates to the field of air conditioners, and provides an air conditioning system which comprises a heat exchange loop, a heat exchanger and a heat exchanger. And the electric control device comprises an electric control piece and a heat dissipation plate, the heat dissipation plate is installed on the electric control piece and comprises a throttling channel, the throttling channel is circularly connected with the heat exchange loop, and the electric control piece is used for controlling the heat exchange loop to work. In order to overcome the defects that in the prior art, the external environment temperature is too high, and the heat dissipation efficiency of an electric control part is low, so that system operation is affected, according to the air conditioning system, a heat dissipation plate is arranged on the electric control part and communicated with a heat exchange loop, and a refrigerant of the heat exchange loop achieves pressure reduction and heat absorption through a throttling channel of the heat dissipation plate; therefore, the heat dissipation efficiency of the electric control part is improved, and the refrigeration efficiency of the heat exchange loop is also improved through throttling and pressure reduction of the throttling channel on the refrigerant.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning system. Background Art

[0002] Air conditioning, or air conditioner, refers to equipment that uses artificial means to adjust and control the temperature, humidity, flow rate and other parameters of the ambient air in a building or structure. Air conditioning generally includes several major parts such as cold source / heat source equipment, cold and hot medium distribution system, terminal device and other auxiliary equipment. Mainly includes: refrigeration host, water pump, fan and piping system. The terminal device is responsible for using the cold and heat distributed to specifically process the air state so that the air parameters of the target environment meet certain requirements. The electronic control unit is an indispensable part of the air conditioning system. During the continuous operation of the system, the electronic control unit is the operation center of the entire system, allowing each component of the system to operate reasonably and maintain the operation of the entire system.

[0003] For air conditioners, the most important function is to adjust the indoor temperature to achieve comfort. However, due to excessively high temperatures or narrow installation space, the heat exchange of the outdoor air-cooled condensing heat exchange air conditioner of the heat exchange unit becomes poor, and the system pressure of the heat exchange unit increases. Due to the high outdoor ambient temperature and the large load of the heat exchange unit, the temperature rise of the heat exchange unit's electrical components will become too high. In order to protect the normal operation of the electrical components, the operating frequency of the compressor has to be limited or even reduced, which affects the cooling capacity of the heat exchange unit under high temperature conditions or when the condenser fins are dirty, resulting in a decrease in cooling capacity and reduced comfort. Utility Model Content

[0004] The utility model provides an air conditioning system for solving the defects in the prior art that the external environment temperature is too high and the heat dissipation efficiency of the electric control components is low, which affects the operation of the system. The utility model realizes the use of the throttling effect of the throttling channel to reduce the pressure and absorb heat, so as to cool the electric control components and improve the cooling efficiency.

[0005] The utility model provides an air conditioning system, comprising:

[0006] Heat exchange circuit;

[0007] An electric control device, the electric control device includes an electric control component and a heat sink, the heat sink is mounted on the electric control component, the heat sink includes a throttling channel, the throttling channel is cyclically connected to the heat exchange circuit, and the electric control component is used to control the operation of the heat exchange circuit.

[0008] According to the air conditioning system provided by the utility model, the heat dissipation plate includes:

[0009] A plate body, wherein a first chamber, a second chamber and the throttling passage are formed in the plate body, and the throttling passage is arranged between the first chamber and the second chamber;

[0010] a refrigerant inlet, the refrigerant inlet being in communication with the first chamber;

[0011] a refrigerant outlet, the refrigerant outlet being in communication with the second chamber;

[0012] Wherein, the refrigerant inlet and the refrigerant outlet are connected to the heat exchange circuit.

[0013] According to the air conditioning system provided by the utility model, a plurality of the throttling channels are arranged between the first chamber and the second chamber, and the cross-sectional area of ​​a single throttling channel is smaller than the cross-sectional area of ​​the first chamber and the cross-sectional area of ​​the second chamber.

[0014] According to the air conditioning system provided by the utility model, the throttling channels are arranged in parallel with each other.

[0015] According to the air conditioning system provided by the utility model, fins are arranged in the first chamber and / or the second chamber.

[0016] According to the air conditioning system provided by the utility model, the refrigerant inlet or the refrigerant outlet is provided with a control valve, and the control valve is electrically connected to the electric control component.

[0017] According to the air conditioning system provided by the utility model, the heat exchange circuit includes a compressor, a condenser, an expansion valve and an evaporator, the outlet of the compressor is connected to the condenser, the condenser is connected to the expansion valve, the expansion valve is connected to the evaporator, and the evaporator is connected to the inlet of the compressor;

[0018] One end of the heat sink is connected to the inlet of the evaporator, and the other end of the heat sink is connected to the outlet of the condenser.

[0019] According to the air conditioning system provided by the utility model, the heat exchange circuit further includes a temperature sensor, the temperature sensor is arranged on the condenser, and the temperature sensor is electrically connected to the electrical control unit.

[0020] According to the air conditioning system provided by the utility model, the electric control unit includes a temperature judgment module, and the temperature judgment module is used to compare the temperature value obtained by the temperature sensor with a threshold value, thereby controlling the on-off of the throttling channel.

[0021] According to the air conditioning system provided by the utility model, the electrical control unit further includes a delay module, and the delay module controls the opening of the temperature judgment module through timing.

[0022] The air-conditioning system provided by the utility model is provided with a heat sink on the electrical control unit, and the heat sink is connected with the heat exchange circuit. The refrigerant in the heat exchange circuit is reduced in pressure and absorbs heat through the throttling channel of the heat sink, thereby improving the heat dissipation efficiency of the electrical control unit. The throttling and pressure reduction of the refrigerant by the throttling channel also improves the cooling efficiency of the heat exchange circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is the principle diagram of the air conditioning system provided by the utility model;

[0025] Figure 2 It is a left view of the heat dissipation plate provided by the utility model;

[0026] Figure 3 This is a front view of the heat dissipation plate provided by the utility model;

[0027] Figure 4 yes Figure 2 Sectional view along AA;

[0028] Figure 5 yes Figure 3 Cross-sectional view along BB.

[0029] Reference numerals:

[0030] 100: heat exchange circuit; 101: compressor; 102: condenser; 103: expansion valve; 104: evaporator; 105: temperature sensor; 200: electric control unit; 201: heat sink; 210: throttling channel; 202: control valve; 220: plate body; 221: refrigerant inlet; 222: refrigerant outlet; 211: first chamber; 212: second chamber. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] Combine the following Figures 1 to 5 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0036] like Figure 1 As shown, the utility model provides an air conditioning system, including: a heat exchange circuit 100 and an electric control device, the electric control device includes an electric control unit 200 and a heat sink 201, the heat sink 201 is installed on the electric control unit 200, the heat sink 201 includes a throttling channel 210, the throttling channel 210 is cyclically connected to the heat exchange circuit 100, and the electric control unit 200 is used to control the operation of the heat exchange circuit 100. Specifically, the heat sink 201 is connected to the heat exchange circuit 100 through a pipeline to realize the circulation of refrigerant from the throttling channel 210.

[0037] Among them, the electronic control device can control the refrigeration process of the heat exchange loop 100. When the outdoor ambient temperature is high, the heat exchange efficiency of the heat exchange loop 100 decreases, the load of the air conditioning system increases, and the temperature rise of the electronic control device is higher. At this time, the refrigerant of the heat exchange loop 100 is introduced into the heat sink 201, and the heat of the electronic control unit 200 is taken away by the heat sink 201 to cool the electronic control unit 200. At the same time, a throttling channel 210 is provided in the heat sink 201. When the refrigerant passes through the throttling channel 210, the pressure is reduced, the efficiency of absorbing heat is improved, and the cooling efficiency of the electronic control unit 200 is improved.

[0038] like Figures 2 to 5 As shown, in one embodiment of the utility model, the heat sink 201 includes: a plate body 220, a refrigerant inlet 221 and a refrigerant outlet 222, a first chamber 211, a second chamber 212 and a throttling channel 210 are provided in the plate body 220, and the throttling channel 210 is arranged between the first chamber 211 and the second chamber 212; the refrigerant inlet 221 is connected to the first chamber 211; the refrigerant outlet 222 is connected to the second chamber 212; wherein the refrigerant inlet 221 and the refrigerant outlet 222 are connected to the heat exchange circuit 100.

[0039] Specifically, the refrigerant inlet 221 and the refrigerant outlet 222 are provided on the plate body 220. The refrigerant enters the first chamber 211 from the refrigerant inlet 221, enters the second chamber 212 through the throttling channel 210, and flows out from the refrigerant outlet 222. The refrigerant inlet 221 and the refrigerant outlet 222 are connected to the heat exchange circuit 100 through a pipeline.

[0040] The refrigerant inlet 221 and the refrigerant outlet 222 may be provided on one side or both sides of the plate body 220. The plate body 220 may be a split structure for easy processing and assembly. The plate body 220 may be made of aluminum.

[0041] For the throttling channel 210 of the present invention, the throttling channel 210 can be a cylindrical structure with equal diameter, or a Venturi structure with one or both ends having a diameter larger than the middle diameter. The smaller the cross-sectional area of ​​the throttling channel 210, the better the throttling effect.

[0042] In addition, if Figure 4 and Figure 5 As shown, in some embodiments of the present invention, a plurality of throttling channels 210 are arranged between the first chamber 211 and the second chamber 212 , and the cross-sectional area of ​​a single throttling channel 210 is smaller than the cross-sectional area of ​​the first chamber 211 and the cross-sectional area of ​​the second chamber 212 .

[0043] For example, at least five throttling channels 210 are disposed in the plate body 220 , and each of the throttling channels 210 is independent of each other and has the same length.

[0044] That is to say, there is a first cross-sectional area difference between the first chamber 211 and each throttling channel 210, and the cross-sectional area of ​​each part of the first chamber 211 is larger than the cross-sectional area of ​​each part of the throttling channel 210; similarly, there is a second cross-sectional area difference between the second chamber 212 and each throttling channel 210, and the cross-sectional area of ​​each part of the second chamber 212 is larger than the cross-sectional area of ​​each part of the throttling channel 210; and the first cross-sectional area difference and the second cross-sectional area difference can be equal or different.

[0045] The throttling channel 210 may be a capillary hole opened in the plate body 220 , or a capillary channel may be provided to connect the first chamber 211 and the second chamber 212 .

[0046] Continue to refer Figure 4 In an optional embodiment of the present invention, the throttling channels 210 are arranged in parallel with each other. The inner diameters of the throttling channels 210 can be equal.

[0047] like Figure 4 As shown, in a specific embodiment of the present invention, fins are provided in the first chamber 211 and / or the second chamber 212. The fins are provided along the length direction of the first chamber 211 or the second chamber 212 to increase the heat exchange area of ​​the two chambers and improve the heat exchange effect.

[0048] Continue to refer Figure 1 In another embodiment of the utility model, a control valve 202 is provided at the refrigerant inlet 221 or the refrigerant outlet 222, and the control valve 202 is electrically connected to the electric control unit 200. The electric control unit 200 controls the switch of the control valve 202, thereby controlling the heat dissipation timing of the heat dissipation plate 201. The control valve 202 can be a solenoid valve.

[0049] Specifically, in other embodiments of the present invention, the heat exchange circuit 100 includes a compressor 101, a condenser 102, an expansion valve 103 and an evaporator 104, the outlet of the compressor 101 is connected to the condenser 102, the condenser 102 is connected to the expansion valve 103, the expansion valve 103 is connected to the evaporator 104, and the evaporator 104 is connected to the inlet of the compressor 101; wherein, one end of the heat sink 201 is connected to the inlet of the evaporator 104, and the other end of the heat sink 201 is connected to the outlet of the condenser 102.

[0050] That is to say, the refrigerant inlet 221 of the heat sink 201 is connected between the condenser 102 and the expansion valve 103, and the refrigerant outlet 222 of the heat sink 201 is connected to the evaporator 104. During the refrigeration process, the refrigerant is sucked from the compressor 101, cooled by the condenser 102 and becomes a low-temperature and low-pressure refrigerant, and then the flow and pressure are controlled by the expansion valve 103, and finally reaches the evaporator 104 to absorb heat and achieve a refrigeration effect. When the ambient temperature on the external machine side is high, the control valve 202 is opened to pass the refrigerant into the heat sink 201, and the temperature of the electric control unit 200 of the air-conditioning system is reduced through the throttling cycle, thereby improving the life and stability of the electric control unit 200, and also plays an auxiliary throttling role.

[0051] After the heat sink 201 is turned on, the opening of the expansion valve 103 controlled by the electronic control unit 200 is also adaptively adjusted. The expansion valve 103 may be an electronic expansion valve 103 .

[0052] Continue to refer Figure 1 In an embodiment of the present utility model, the heat exchange circuit 100 further includes a temperature sensor 105, which is disposed on the condenser 102 and is electrically connected to the electric control unit 200. The temperature sensor 105 obtains the external environment temperature, and the electric control unit 200 controls whether the heat sink 201 works based on the external environment temperature.

[0053] Furthermore, in some other embodiments of the present invention, the electrical control unit 200 includes a temperature judgment module, which is used to compare the temperature value obtained by the temperature sensor 105 with a threshold value, thereby controlling the on-off of the throttling channel 210 .

[0054] Specifically, when the temperature sensor 105 obtains the outdoor temperature value and sends it to the temperature judgment module, the temperature judgment module compares the temperature value with the first threshold value. When the temperature value is greater than the threshold value, the control valve 202 is opened, and the refrigerant enters the throttling channel 210 to reduce pressure and absorb heat. When the temperature value is less than the threshold value, the control valve 202 is closed or the control valve 202 remains closed.

[0055] In addition, in some optional embodiments of the present invention, the electrical control unit 200 further includes a delay module, which controls the start of the temperature determination module through timing.

[0056] For example, when the heat exchange circuit 100 starts to run, the fan is started, and the compressor is started, the temperature sensor 105 obtains the outdoor ambient temperature, and the delay module starts timing. After 1 minute, the temperature judgment module is turned on, and the obtained outdoor ambient temperature value is compared with the threshold value. When the outdoor ambient temperature value is greater than the threshold value, the control valve 202 is opened, and the refrigerant enters the throttling channel 210 to reduce pressure and absorb heat. At the same time, the electronic control unit 200 controls the expansion valve 103 to reduce the opening degree of the expansion valve 103.

[0057] The delay module starts timing again. After the heat sink 201 runs for 30 minutes, the temperature judgment module starts and compares the obtained outdoor ambient temperature value with the threshold. When the outdoor ambient temperature value is less than the threshold, the control valve 202 is closed and the heat sink 201 stops working.

[0058] The air-conditioning system provided by the utility model is provided with a heat sink 201 on the electrical control unit 200, and the heat sink 201 is connected with the heat exchange circuit 100. The refrigerant in the heat exchange circuit 100 is reduced in pressure and absorbs heat through the throttling channel 210 of the heat sink 201, thereby improving the heat dissipation efficiency of the electrical control unit 200. The throttling and pressure reduction of the refrigerant by the throttling channel 210 also improves the cooling efficiency of the heat exchange circuit 100.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An air conditioning system, characterized in that: include: Heat exchange circuit (100); An electric control device, the electric control device comprising an electric control unit (200) and a heat sink (201), the heat sink (201) being mounted on the electric control unit (200), the heat sink (201) comprising a throttling channel (210), the throttling channel (210) being cyclically connected to the heat exchange circuit (100), and the electric control unit (200) being used to control the operation of the heat exchange circuit (100).

2. The air conditioning system according to claim 1, characterized in that: The heat dissipation plate (201) comprises: A plate body (220), wherein a first chamber (211), a second chamber (212) and the throttling channel (210) are provided in the plate body (220), and the throttling channel (210) is arranged between the first chamber (211) and the second chamber (212); A refrigerant inlet (221), the refrigerant inlet (221) being in communication with the first chamber (211); A refrigerant outlet (222), the refrigerant outlet (222) being in communication with the second chamber (212); Wherein, the refrigerant inlet (221) and the refrigerant outlet (222) are connected to the heat exchange circuit (100).

3. The air conditioning system according to claim 2, characterized in that: A plurality of throttling channels (210) are arranged at intervals between the first chamber (211) and the second chamber (212), and the cross-sectional area of ​​a single throttling channel (210) is smaller than the cross-sectional area of ​​the first chamber (211) and the cross-sectional area of ​​the second chamber (212).

4. The air conditioning system according to claim 3, characterized in that: The throttling channels (210) are arranged parallel to each other.

5. The air conditioning system according to claim 2, characterized in that: Fins are arranged in the first chamber (211) and / or the second chamber (212).

6. The air conditioning system according to claim 2, characterized in that: The refrigerant inlet (221) or the refrigerant outlet (222) is provided with a control valve (202), and the control valve (202) is electrically connected to the electric control unit (200).

7. The air conditioning system according to any one of claims 1 to 6, characterized in that: The heat exchange circuit (100) comprises a compressor (101), a condenser (102), an expansion valve (103) and an evaporator (104); the outlet of the compressor (101) is connected to the condenser (102), the condenser (102) is connected to the expansion valve (103), the expansion valve (103) is connected to the evaporator (104), and the evaporator (104) is connected to the inlet of the compressor (101); One end of the heat dissipation plate (201) is connected to the inlet of the evaporator (104), and the other end of the heat dissipation plate (201) is connected to the outlet of the condenser (102).

8. The air conditioning system according to claim 7, characterized in that: The heat exchange circuit (100) further comprises a temperature sensor (105), wherein the temperature sensor (105) is arranged on the condenser (102), and the temperature sensor (105) is electrically connected to the electrical control unit (200).

9. The air conditioning system according to claim 8, characterized in that: The electrical control unit (200) comprises a temperature judgment module, which is used to compare the temperature value obtained by the temperature sensor (105) with a threshold value, thereby controlling the on-off of the throttling channel (210).

10. The air conditioning system according to claim 9, characterized in that: The electrical control unit (200) further comprises a delay module, which controls the activation of the temperature judgment module through timing.

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