Air-cooled cold air conditioning system with variable heat exchange area of condenser

Abstract

The utility model relates to the technical field of air conditioning systems, and discloses an air-cooled cold air conditioning system with a variable condenser heat exchange area, which comprises a box body, the right end of the box body is fixedly connected with a control system, and the left side of the box body is fixedly connected with a filtering mechanism; the control system comprises a connecting pipe, the connecting pipe is fixedly connected to the right section of the box body, the right end of the connecting pipe is fixedly connected with a liquid storage device, the right end of the liquid storage device is fixedly connected with an expansion valve through the connecting pipe, the right end of the expansion valve is fixedly connected with an indoor heat exchanger through the connecting pipe, and first fan equipment is arranged on the right side of the indoor heat exchanger. The back face of the indoor heat exchanger is fixedly connected with a first pressure sensor through a connecting pipe. According to the air-cooled cold air conditioning system with the variable heat exchange area of the condenser, the operation area of the condenser in the indoor heat exchanger and the on-off state of the electromagnetic valve and the fan equipment are flexibly controlled, it is guaranteed that the condensing pressure is kept at the proper level under different low-temperature environments, and stable operation of the air-cooled cold air conditioning system is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning system technology, specifically to an air-cooled air conditioning system with a variable condenser heat exchange area. Background Technology

[0002] An air-cooled air conditioning system is an air conditioning system that uses air as the cooling medium. It dissipates heat from the refrigeration system to the outdoor air through an air-cooled condenser, thereby cooling the indoor air. This system typically consists of major components such as a compressor, condenser, throttling device, and evaporator. The refrigerant circulates within the system, absorbing and releasing heat through phase change to regulate indoor temperature and humidity. It offers advantages such as easy installation, quiet operation, and simple maintenance, and is widely used in homes, commercial spaces, and industrial environments.

[0003] In addition, for air conditioning systems for low-temperature refrigeration (VFD rooms / energy storage rooms), when the outdoor ambient temperature is below -10℃, the condensing pressure is often too low. This leads to a decrease in low pressure, eventually causing a low-pressure alarm. Alternatively, the unit may operate under this pressure for a long time, resulting in insufficient high and low pressure differentials, abnormal oil return to the compressor, and ultimately, serious consequences such as compressor oil shortage and damage. Therefore, it is necessary to design an air-cooled air conditioning system with a variable condenser heat exchange area. Utility Model Content

[0004] The purpose of this invention is to provide an air-cooled air conditioning system with a variable condenser heat exchange area to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wind-cooled air conditioning system with a variable condenser heat exchange area, comprising a housing, a control system fixedly connected to the right end of the housing, and a filter mechanism fixedly connected to the left side of the housing;

[0006] The control system includes a connecting pipe, which is fixedly connected to a section of the housing. A liquid receiver is fixedly connected to the right end of the connecting pipe. An expansion valve is fixedly connected to the right end of the liquid receiver via the connecting pipe. An indoor heat exchanger is fixedly connected to the right end of the expansion valve via the connecting pipe. A fan device is installed on the right side of the indoor heat exchanger. A pressure sensor is fixedly connected to the back of the indoor heat exchanger via the connecting pipe. A four-way valve is fixedly connected to the back of the pressure sensor via the connecting pipe. A compressor is fixedly connected to the right end of the four-way valve via the connecting pipe. A pressure sensor is fixedly connected to the right end of the compressor via the connecting pipe. The left end of the pressure sensor is fixedly connected to the back of the housing via the connecting pipe.

[0007] Preferably, the front of the four-way valve is fixedly connected to the right end of the pressure sensor II via a connecting pipe.

[0008] Preferably, the filtration mechanism includes a vertical base fixedly connected to the left end of the housing. A T-shaped strip is slidably connected inside the vertical base. A spring is fixedly connected to the bottom end of the T-shaped strip, and a top strip is fixedly connected to the top of the T-shaped strip. A T-shaped component is fixedly connected to the upper surface of the T-shaped strip, and a rectangular strip is fixedly connected inside the T-shaped component. A filter frame is provided on the left side of the housing. A card is fixedly connected to the surface of the filter frame. A filter screen is fixedly connected inside the filter frame. An outdoor heat exchanger is fixedly connected inside the housing. Heat exchanger manifolds are provided on both sides of the outdoor heat exchanger. A finned temperature sensor is fixedly connected to the right side of the outdoor heat exchanger. A solenoid valve is fixedly connected between the right side of the outdoor heat exchanger and the heat exchanger manifold. A fan plate is fixedly connected to the left side of the housing. A second fan device is fixedly connected inside the fan plate.

[0009] Preferably, a guide groove is formed inside the vertical seat, the surface of the T-shaped strip is slidably connected to the inside of the guide groove, and the bottom end of the spring is fixedly connected to the inside of the guide groove, so as to facilitate the sliding of the T-shaped strip inside the guide groove.

[0010] Preferably, a slot is formed on the left side of the housing, and the surface of the filter frame matches the inside of the slot.

[0011] Preferably, the top of the card holder has an opening, and the surface of the rectangular strip matches the inside of the opening, so that the rectangular strip can be easily inserted into the opening.

[0012] Preferably, a through hole is provided at the top of the vertical base, and the upper surface of the T-shaped strip extends through the through hole at the top of the vertical base to facilitate the movement of the T-shaped strip within the through hole.

[0013] Compared with the prior art, this utility model provides an air-cooled air conditioning system with a variable condenser heat exchange area, which has the following beneficial effects:

[0014] 1. This air-cooled air conditioning system with variable condenser heat exchange area, through its control system, can flexibly control the operating area of ​​the condenser in the indoor heat exchanger and the on / off status of the solenoid valve and fan equipment according to different ambient temperatures (0℃>Th≥-10℃, -10℃>Th≥-20℃, -20℃>Th), ensuring that the condensing pressure is maintained at a suitable level (above 8 bar or above 7 bar) under different low-temperature environments, effectively guaranteeing the stable operation of the air-cooled air conditioning system.

[0015] 2. This air-cooled air conditioning system with variable condenser heat exchange area, through the set filter mechanism, can switch to heat pump mode through a four-way valve for occasional heating needs in winter. When the evaporator is frosted, the upper and lower evaporators can work alternately by controlling the solenoid valve to achieve uninterrupted defrosting. It can also operate well in heat pump mode, improving the practicality and stability of the system when heating in winter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a perspective view of the control system of this utility model;

[0019] Figure 3 This is a perspective view of the filtration mechanism of this utility model;

[0020] Figure 4 This is a three-dimensional exploded view of the filter mechanism parts of this utility model;

[0021] Figure 5 These are two three-dimensional exploded views of the filter mechanism parts of this utility model;

[0022] Figure 6 The three-dimensional disassembled view shows the filter mechanism parts of this utility model.

[0023] In the diagram: 1. Housing; 2. Control system; 21. Connecting pipe; 22. Liquid receiver; 23. Expansion valve; 24. Indoor heat exchanger; 25. Pressure sensor one; 26. Compressor; 27. Four-way valve; 28. Pressure sensor two; 29. ​​Fan equipment one; 3. Filter mechanism; 31. Vertical seat; 32. T-shaped bar; 33. Top bar; 331. T-shaped piece; 34. Rectangular bar; 35. Card holder; 351. Spring; 352. Filter frame; 36. Filter screen; 361. Fan plate; 362. Fan equipment two; 37. Heat exchanger manifold; 38. Outdoor heat exchanger; 39. Solenoid valve; 391. Fin temperature sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] This utility model provides the following technical solution:

[0027] Example 1

[0028] Combination Figures 2 to 6 A variable condenser heat exchange area air-cooled air conditioning system includes a housing 1, a control system 2 fixedly connected to the right end of the housing 1, and a filter mechanism 3 fixedly connected to the left side of the housing 1.

[0029] The control system 2 includes a connecting pipe 21, which is fixedly connected to a section of the housing 1. A liquid reservoir 22 is fixedly connected to the right end of the connecting pipe 21. An expansion valve 23 is fixedly connected to the right end of the liquid reservoir 22 via the connecting pipe 21. An indoor heat exchanger 24 is fixedly connected to the right end of the expansion valve 23 via the connecting pipe 21. A fan device 29 is installed on the right side of the indoor heat exchanger 24. A pressure sensor 25 is fixedly connected to the back of the indoor heat exchanger 24 via the connecting pipe 21. A four-way valve 27 is fixedly connected to the back of the pressure sensor 25 via the connecting pipe 21. A compressor 26 is fixedly connected to the right end of the four-way valve 27 via the connecting pipe 21. A pressure sensor 28 is fixedly connected to the right end of the compressor 26 via the connecting pipe 21. The left end of the pressure sensor 28 is fixedly connected to the back of the housing 1 via the connecting pipe 21.

[0030] Furthermore, the front of the four-way valve 27 is fixedly connected to the right end of the pressure sensor 28 via the connecting pipe 21.

[0031] Example 2

[0032] See Figure 1-6Furthermore, based on Embodiment 1, the filter mechanism 3 further includes a vertical base 31, which is fixedly connected to the left end of the housing 1. A T-shaped strip 32 is slidably connected inside the vertical base 31. A spring 351 is fixedly connected to the bottom end of the T-shaped strip 32, and a top strip 33 is fixedly connected to the top of the T-shaped strip 32. A T-shaped component 331 is fixedly connected to the upper surface of the T-shaped strip 32, and a rectangular strip 34 is fixedly connected inside the T-shaped component 331. A filter frame 352 is provided on the left side of the housing 1. A card holder 35 is fixedly connected to the surface of the filter frame 352, and a filter screen 36 is fixedly connected inside the filter frame 352. A filter screen 36 is fixedly connected inside the housing 1. An outdoor heat exchanger 38 is provided with heat exchanger manifolds 37 on both sides of the outdoor heat exchanger 38. A finned temperature sensor 391 is fixedly connected to the right side of the outdoor heat exchanger 38. A solenoid valve 39 is fixedly connected between the right side of the outdoor heat exchanger 38 and the heat exchanger manifolds 37. A fan plate 361 is fixedly connected to the left side of the box 1. A second fan device 362 is fixedly connected inside the fan plate 361. A guide groove is opened inside the vertical seat 31. The surface of the T-shaped strip 32 is slidably connected to the inside of the guide groove. The bottom end of the spring 351 is fixedly connected to the inside of the guide groove. A slot is opened on the left side of the box 1. The surface of the filter frame 352 matches the inside of the slot.

[0033] Furthermore, the card holder 35 has an opening at the top, the surface of the rectangular strip 34 matches the inside of the opening, the vertical base 31 has a through hole at the top, and the upper surface of the T-shaped strip 32 extends through the through hole at the top of the vertical base 31.

[0034] In actual operation, when this device is used for air-cooled air conditioning systems, the indoor heat exchanger 24 is divided into three independent parts with a ratio of 1 / 2, 1 / 4, and 1 / 4. When the ambient temperature Th: 0℃ > Th ≥ -10℃, the top solenoid valve 39 is closed and the bottom solenoid valve 39 is opened. At this time, half of the condenser area in the indoor heat exchanger 24 is in operation, ensuring that the condensing pressure is above 8 bar.

[0035] When the ambient temperature Th: -10℃>Th≥-20℃, both solenoid valves 39 are closed. At this time, 1 / 4 of the condenser area is in operation, which can ensure that the condensing pressure is above 8 bar.

[0036] When the ambient temperature Th: -20℃ > Th, the top solenoid valve 39 is closed, the bottom solenoid valve 39 is closed, and the fan equipment 2 362 is shut down. At this time, half of the condenser area is in operation, and the air volume is reduced by half, which can ensure that the condensing pressure is above 7 bar.

[0037] In addition, for occasional heating needs in winter, this system can switch to heat pump mode via the four-way valve 27. In heat pump mode, the condenser becomes an evaporator. Since the outdoor temperature is below 0℃, frost will form on the evaporator during operation. This patent also works well in heat pump mode. The top solenoid valve 39 is closed, and the bottom solenoid valve 39 is open. At this time, the lower part of the evaporator is working. After running for a period of time, when the fins of the indoor heat exchanger 24 are frosted (judged by fin temperature and low pressure), the top solenoid valve 39 opens and the bottom solenoid valve 39 closes. At this time, the upper part of the evaporator is working, and the lower part of the evaporator is naturally defrosted by the blower 362, achieving defrosting without stopping the machine. When the upper part is frosted, the cycle is switched again.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A variable heat exchange area condenser air-cooled air conditioning system, comprising a box (1), characterized in that: The right end of the housing (1) is fixedly connected to a control system (2), and the left side of the housing (1) is fixedly connected to a filter mechanism (3). The control system (2) includes a connecting pipe (21), which is fixedly connected to the right section of the housing (1). A liquid reservoir (22) is fixedly connected to the right end of the connecting pipe (21). An expansion valve (23) is fixedly connected to the right end of the liquid reservoir (22) through the connecting pipe (21). An indoor heat exchanger (24) is fixedly connected to the right end of the expansion valve (23) through the connecting pipe (21). A fan device (29) is installed on the right side of the indoor heat exchanger (24). A pressure sensor (25) is fixedly connected to the back of the container (1) via a connecting pipe (21). A four-way valve (27) is fixedly connected to the back of the pressure sensor (25) via a connecting pipe (21). A compressor (26) is fixedly connected to the right end of the four-way valve (27) via a connecting pipe (21). A pressure sensor (28) is fixedly connected to the right end of the compressor (26) via a connecting pipe (21). The left end of the pressure sensor (28) is fixedly connected to the back of the container (1) via a connecting pipe (21).

2. The air-cooled cold air conditioning system with variable condenser heat exchange area according to claim 1, characterized in that: The front of the four-way valve (27) is fixedly connected to the right end of the pressure sensor (28) via a connecting pipe (21).

3. The air-cooled cold air conditioning system with variable condenser heat exchange area according to claim 1, characterized in that: The filter mechanism (3) includes a vertical base (31), which is fixedly connected to the left end of the housing (1). A T-shaped strip (32) is slidably connected inside the vertical base (31). A spring (351) is fixedly connected to the bottom end of the T-shaped strip (32). A top strip (33) is fixedly connected to the top of the T-shaped strip (32). A T-shaped piece (331) is fixedly connected to the upper surface of the T-shaped strip (32). A rectangular strip (34) is fixedly connected inside the T-shaped piece (331). A filter frame (352) is provided on the left side of the housing (1). A card holder (352) is fixedly connected to the surface of the filter frame (352). 5) A filter screen (36) is fixedly connected inside the filter frame (352). An outdoor heat exchanger (38) is fixedly connected inside the box (1). Heat exchanger manifolds (37) are respectively provided on both sides of the outdoor heat exchanger (38). A finned temperature sensor (391) is fixedly connected to the right side of the outdoor heat exchanger (38). A solenoid valve (39) is fixedly connected between the right side of the outdoor heat exchanger (38) and the heat exchanger manifold (37). A fan plate (361) is fixedly connected to the left side inside the box (1). A second fan device (362) is fixedly connected inside the fan plate (361).

4. The air-cooled cold wind air conditioning system with variable condenser heat exchange area according to claim 3, characterized in that: The vertical seat (31) has a guide groove inside, the surface of the T-shaped strip (32) is slidably connected to the inside of the guide groove, and the bottom end of the spring (351) is fixedly connected to the inside of the guide groove.

5. The air-cooled cold air conditioning system with variable condenser heat exchange area according to claim 3, characterized in that: A slot is opened on the left side of the box (1), and the surface of the filter frame (352) matches the inside of the slot.

6. The air-cooled cold wind air conditioning system with variable condenser heat exchange area according to claim 3, characterized in that: The card holder (35) has an opening at the top, and the surface of the rectangular strip (34) matches the inside of the opening.

7. The air-cooled cold air conditioning system with variable condenser heat exchange area according to claim 3, characterized in that: The top of the vertical seat (31) has a through hole, and the upper surface of the T-shaped strip (32) extends through the top of the vertical seat (31) to form a through hole.

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