A modular HVAC heat exchanger

Abstract

The present invention belongs to the technical field of heat exchangers, and particularly relates to a modular HVAC heat exchanger, including a low-temperature liquid inlet, a low-temperature liquid outlet, a high-temperature liquid inlet, and a high-temperature liquid outlet; it also includes a general bearing system and a plurality of heat exchange units; the above four liquid inlets and outlets are all opened in the general bearing system, and the general bearing system includes a plurality of connecting components; a single heat exchange unit includes secondary flow channels for mutual heat exchange, and the secondary flow channels are respectively provided with liquid inlets and outlets; the general bearing system is connected to the liquid inlets and outlets of the secondary flow channels of the plurality of heat exchange units in sequence through a plurality of connecting components. This modular HVAC heat exchanger can adaptively adjust the number of heat exchange units connected to the general bearing system according to changes in heating conditions; at the same time, when a heat exchange unit fails and cannot work normally, it can be removed, replaced or repaired without affecting the normal operation of other heat exchange units, thereby ensuring the normal use of this modular HVAC heat exchanger.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a modular HVAC heat exchanger. Background Art

[0002] As a general heat exchange equipment, heat exchanger is widely used in many fields such as chemical industry, aerospace, microelectronics, metallurgy, communication, electricity, etc. Existing heat exchangers can be divided into the following according to their working principles: wall heat exchanger, also known as surface heat exchanger, in which the cold and hot fluids flow on both sides of the solid medium without contacting each other, and the heat is transferred between the cold and hot fluids through the solid. Shell and tube and plate heat exchangers are this form of heat transfer; the second is a hybrid heat exchanger, in which the cold and hot fluids contact and mix with each other to achieve heat transfer, also known as a contact heat exchanger, which is commonly found in cooling towers and deaerators in power generation systems; the third is a regenerative heat exchanger, in which the cold and hot fluids periodically flow through the heat storage body to achieve heat transfer, also known as a regenerative heat exchanger, such as a rotary air preheater. Among them, the wall heat exchanger is the most widely used.

[0003] The existing partition-type heat exchangers are difficult to install and disassemble, especially the U-shaped copper tubes of the tubular heat exchangers must be replaced as a whole if they are deformed or broken. In response to this problem, Chinese invention patent CN109210978A proposes a combined HVAC heat exchanger, which has a first columnar heat sink, a second columnar heat sink and a third columnar heat sink; a plurality of second columnar heat sinks are arranged between the first columnar heat sink and the third columnar heat sink, and the first columnar heat sink, the second columnar heat sink and the third columnar heat sink are connected by threads between the adjacent blocks, an inlet pipe is arranged in the middle of the upper end of the first columnar heat sink, a dispersed connection ring is arranged horizontally in the first columnar heat sink, and a plurality of inlet ports are arranged at the lower end of the dispersed connection ring along the circumferential direction, and a through hole relative to the inlet port is arranged on the second columnar heat sink along the circumferential direction; an outlet pipe is arranged in the middle of the lower end of the third columnar heat sink, a concentrated connection ring is arranged horizontally in the third columnar heat sink, and a plurality of outlet ports are arranged at the upper end of the concentrated connection ring along the circumferential direction. This combined HVAC heat exchanger saves the cost of copper pipes, facilitates the free loading and unloading of some components, and can improve the service life and efficiency of the overall heat exchanger. However, this technical solution also has the following problems: first, the heat exchanger cannot reasonably allocate the heat exchange capacity of the heat exchanger according to the changes in heat exchange demand; second, when the heat exchanger fails, the heat exchanger needs to be shut down for maintenance, and it is impossible to complete the fault maintenance or replacement of parts without shutting down. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention aims to provide a modular HVAC heat exchanger, which includes a general control system and heat exchange units. The general control system can be used to connect different numbers of heat exchange units to adapt to changes in heat exchange demand. When a heat exchange unit fails and cannot work normally, the heat exchange unit can be removed, replaced or repaired without affecting the normal operation of other heat exchange units.

[0005] In order to achieve the above-mentioned objectives, the present invention provides a modular HVAC heat exchanger, including a low-temperature liquid inlet, a low-temperature liquid outlet, a high-temperature liquid inlet, and a high-temperature liquid outlet; it also includes a general bearing system and multiple heat exchange units; the above four liquid inlets and outlets are all opened in the general bearing system, and the general bearing system includes multiple connecting components; a single heat exchange unit contains secondary flow channels for mutual heat exchange, namely, secondary low-temperature liquid flow channels and secondary high-temperature liquid flow channels; the secondary low-temperature liquid flow channels are respectively provided with secondary low-temperature liquid inlets and secondary low-temperature liquid outlets; the secondary high-temperature liquid flow channels are respectively provided with secondary high-temperature liquid inlets and secondary high-temperature liquid outlets; the general bearing system is connected with the secondary low-temperature liquid inlets, secondary low-temperature liquid outlets, secondary high-temperature liquid inlets, and secondary high-temperature liquid outlets of multiple heat exchange units in sequence through multiple connecting components.

[0006] Furthermore, the connecting component includes four flow channels, which include a low-temperature liquid inlet flow channel, a low-temperature liquid outlet flow channel, a high-temperature liquid inlet flow channel, and a high-temperature liquid outlet flow channel; the low-temperature liquid inlet flow channel connects the low-temperature liquid inlet and the secondary low-temperature liquid inlet; the low-temperature liquid outlet flow channel connects the secondary low-temperature liquid outlet and the low-temperature liquid outlet; the high-temperature liquid inlet flow channel connects the high-temperature liquid inlet and the secondary high-temperature liquid inlet; the high-temperature liquid outlet flow channel connects the secondary high-temperature liquid outlet and the high-temperature liquid outlet; the junction of the flow channel and the above-mentioned each secondary flow channel inlet and outlet is a sealing surface, the sealing surface of the flow channel adopts an inner conical surface, and the sealing surfaces of the above-mentioned each secondary flow channel inlet and outlet adopt an outer conical surface, the taper of the inner and outer conical surfaces is the same, and can form a tight fit.

[0007] Furthermore, the connecting component also includes a cleaning component; the cleaning component includes an annular shell, a cleaning box, and a piston; at the sealing surface, a plurality of circular holes are evenly opened along the circumferential direction of the flow channel; the annular shell is arranged around the outer layer of all the circular holes and completely covers all the circular holes, and the annular shell and the outer surface of the flow channel form an annular pipeline; the cleaning box is a closed box body, which is filled with cleaning liquid; the cleaning box is located above the annular shell and is connected to the annular shell, and a one-way flow component is provided at the connection between the two; the upper half of the cleaning box is connected to the piston, and the piston is arranged between the heat exchange unit and the cleaning box; when all the sealing surfaces are tightly combined, the heat exchange unit first contacts the piston and compresses it.

[0008] Furthermore, the one-way flow component includes a blocking body and a reset spring; the inner hole at the connection point between the cleaning box and the circular outer shell is a plumb inner hole, and the circular hole corresponding to the plumb inner hole is a cleaning circular hole; the diameter of the plumb inner hole is larger than the diameter of the cleaning circular hole; the blocking body is arranged inside the plumb inner hole and completely closes the cleaning circular hole, but the blocking body cannot close the plumb inner hole; a reset spring is arranged between the blocking body and the inner surface of the plumb inner hole; when the piston is compressed, the internal pressure of the cleaning box increases, and the increased pressure pushes the blocking body to move along the axial direction of the plumb inner hole and gradually away from the cleaning circular hole, and the reset spring is in a compressed state at this time.

[0009] Furthermore, the lower half of the interior of the cleaning box is filled with cleaning liquid, and the upper half of the interior is filled with air.

[0010] Furthermore, the cleaning component also includes a replenishing pipeline, a liquid control valve, and a gas control valve; one end of the replenishing pipeline corresponds to the lower half of the cleaning box, and the other end corresponds to the low-temperature liquid inlet or the high-temperature liquid inlet; the replenishing pipeline is provided with a liquid control valve; the gas control valve is arranged in the upper half of the cleaning box; when the piston recovers from the compressed state to the normal state, a negative pressure is formed inside the cleaning box, and clean liquid and air are respectively sucked in through the liquid control valve and the gas control valve, and the clean liquid flows in from the lower half of the cleaning box, and the air flows in from the upper half of the cleaning box; at this time, the flow rate of the liquid control valve is controlled to be less than the flow rate of the gas control valve, so that the lower half of the inside of the cleaning box is clean liquid, and the upper half of the inside of the cleaning box is air.

[0011] Furthermore, the connecting component also includes an automatic sealing component, which includes an upper baffle, a lower baffle, a support spring, and a push rod; the upper baffle is fixedly connected to the upper half of the interior of the flow channel; the lower baffle is located in the lower half of the interior of the flow channel and is in direct contact with the upper baffle; the upper baffle and the lower baffle can completely close the flow channel; a support spring is arranged between the inner surface of the flow channel and the lower baffle; the push rod is opposite to the lower baffle, and the push rod is respectively arranged at the front end of the secondary low-temperature liquid inlet and outlet and the secondary high-temperature liquid inlet and outlet, and is parallel to the axial direction of the two inlets.

[0012] Furthermore, the heat exchange unit also includes a unit box, an intermediate hose, and a conventional partition-type heat exchanger; the secondary low-temperature liquid inlet, the secondary low-temperature liquid outlet, the secondary high-temperature liquid inlet, and the secondary high-temperature liquid outlet are all opened in the unit box; the conventional partition-type heat exchanger is arranged inside the unit box; the basic low-temperature liquid inlet, the basic low-temperature liquid outlet, the basic high-temperature liquid inlet, and the basic high-temperature liquid outlet of the conventional partition-type heat exchanger are connected to the secondary low-temperature liquid inlet, the secondary low-temperature liquid outlet, the secondary high-temperature liquid inlet, and the secondary high-temperature liquid outlet in sequence through the intermediate hose.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This modular HVAC heat exchanger can adaptively adjust the number of heat exchange units connected to the general contracting system according to changes in heating conditions, thereby achieving reasonable allocation and use of resources; at the same time, when a heat exchange unit fails and cannot work normally, the heat exchange unit can be dismantled, replaced or repaired without affecting the normal operation of other heat exchange units, thereby ensuring the normal use of this modular HVAC heat exchanger.

[0015] 2. This modular HVAC heat exchanger uses a cleaning component. When the main bearing system and the heat exchange unit are connected, the cleaning component can automatically clean the sealing surfaces of the two to ensure that there are no impurities and foreign matter on the sealing surfaces; the cleaning component cleans the sealing surfaces by first spraying cleaning liquid and then spraying air. The cleaning liquid is used to discharge impurities and foreign matter on the sealing surface, and then the air is used to discharge most of the cleaning liquid on the sealing surface, thereby ensuring that the sealing surface is clean and tidy; when the main bearing system and the heat exchange unit are disconnected, the cleaning component can replenish cleaning liquid and air by itself.

[0016] 3. This modular HVAC heat exchanger includes an automatic closing component. When the heat exchange unit is connected to the main bearing system, the automatic closing component is in an open state; when the heat exchange unit is removed from the main bearing system, the automatic closing component is in a closed state; when the main bearing system and the heat exchange unit are disassembled and assembled through the automatic closing component, the flow channel and the secondary flow channel can be automatically connected or disconnected, which is convenient for the replacement and maintenance of the heat exchange unit.

[0017] 4. The heat exchange unit of the modular HVAC heat exchanger can be equipped with different types of conventional partition-type heat exchangers by providing a unit box, and the conventional partition-type heat exchanger can be directly used as a basic heat exchange unit without the need for adaptive design for the conventional partition-type heat exchanger, which greatly improves the adaptability and flexibility of use of this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural diagram of a modular HVAC heat exchanger of the present invention;

[0019] Figure 2 A bottom view of a modular HVAC heat exchanger of the present invention;

[0020] Figure 3 A three-dimensional structural diagram of a modular HVAC heat exchanger of the present invention without a system shell;

[0021] Figure 4 A front view of a modular HVAC heat exchanger of the present invention excluding a system housing;

[0022] Figure 5 for Figure 4 Sectional view at AA;

[0023] Figure 6 for Figure 4 Sectional view at the middle BB;

[0024] Figure 7 for Figure 4 Partial cross-sectional view at point C in the middle;

[0025] Figure 8 for Figure 5 A partial enlarged view of point D in the middle.

[0026] Figure 1-8 In: 100, general control system; 110, low temperature liquid inflow box; 111, low temperature liquid inlet; 120, low temperature liquid outflow box; 121, low temperature liquid outlet; 130, high temperature liquid inflow box; 131, high temperature liquid inlet; 140, high temperature liquid outflow box; 141, high temperature liquid outlet; 150, system housing; 210, Flow channel; 220, cleaning component; 221, annular shell; 222, cleaning box; 223, piston; 224, replenishing pipeline; 225, liquid control valve; 226, gas control valve; 230, one-way flow component; 231, plugging body; 232, return spring; 233, vertical inner hole; 234, cleaning circular hole; 235, support plate; 236, arc plate; 240, automatic closing component; 241, upper baffle; 242, lower baffle; 243, support spring; 244, push rod; 245, first horizontal plate; 246, second horizontal plate; 300, heat exchange unit; 311, secondary low-temperature liquid inlet; 312, secondary low-temperature liquid outlet; 321, secondary high-temperature liquid inlet; 322, secondary high-temperature liquid outlet; 330, unit box; 340, intermediate hose; 350, conventional partition wall heat exchanger. DETAILED DESCRIPTION

[0027] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0028] In the description of this embodiment, it should also be noted that, unless otherwise clearly specified and limited, the terms “set”, “connected” and “connected” should be understood in a broad sense.

[0029] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] refer to Figures 1 to 8The present embodiment discloses a modular HVAC heat exchanger, comprising a low-temperature liquid inlet 111, a low-temperature liquid outlet 121, a high-temperature liquid inlet 131, and a high-temperature liquid outlet 141; it also comprises a general bearing system 100 and a plurality of heat exchange units 300; the above four liquid inlets and outlets are all provided in the general bearing system 100, and the general bearing system 100 comprises a plurality of connecting components; a single heat exchange unit 300 comprises secondary flow channels for mutual heat exchange, namely, a secondary low-temperature liquid flow channel and a secondary high-temperature liquid flow channel; the secondary low-temperature liquid flow channel is respectively provided with a secondary low-temperature liquid inlet 311 and a secondary low-temperature liquid outlet 312; the secondary high-temperature liquid flow channel is respectively provided with a secondary high-temperature liquid inlet 321 and a secondary high-temperature liquid outlet 322; the general bearing system 100 is respectively connected with the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid outlet 312, the secondary high-temperature liquid inlet 321, and the secondary high-temperature liquid outlet 322 of the plurality of heat exchange units 300 through a plurality of connecting components.

[0031] When this embodiment is in use, taking the general bearing system 100 connected to a single heat exchange unit 300 as an example, its specific working process is: low-temperature liquid flows in from the low-temperature liquid inlet 111, and flows through the first section connecting component, the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid flow channel, the secondary low-temperature liquid outlet 312, the second section connecting component in sequence, and finally flows out from the low-temperature liquid outlet 121; high-temperature liquid flows in from the high-temperature liquid inlet 131, and flows through the third section connecting component, the secondary high-temperature liquid inlet 321, the secondary high-temperature liquid flow channel, the secondary high-temperature liquid outlet 322, the fourth section connecting component in sequence, and finally flows out from the high-temperature liquid outlet 141; it is worth noting that when the low-temperature liquid flows through the secondary low-temperature liquid flow channel, the high-temperature liquid flows through the secondary high-temperature liquid flow channel at this time, and the heat released by the high-temperature liquid is mainly transferred to the low-temperature liquid in the secondary low-temperature liquid flow channel through heat conduction and other methods, so that the temperature of the low-temperature liquid gradually increases, and finally completes the heat exchange process. For example, when the weather is cold and heating is needed for residents, the high-temperature exhaust gas or waste liquid generated by the factory can be poured in through the high-temperature liquid inlet 131, and the circulating heating water for residents can be poured in from the low-temperature liquid inlet 111. The two liquids complete the heat exchange process in the secondary low-temperature liquid flow channel and the secondary high-temperature liquid flow channel of the heat exchange unit 300. After absorbing the heat, the circulating heating water for residents finally flows out from the low-temperature liquid outlet 121 and enters the residential heating system to provide heating for the residents. For example, when the factory equipment needs to be cooled, the already high-temperature equipment self-circulating cooling water can be poured in from the high-temperature liquid inlet 131, and the cooling liquid can be poured in from the low-temperature liquid inlet 111. The two liquids complete the heat exchange process in the secondary low-temperature liquid flow channel and the secondary high-temperature liquid flow channel of the heat exchange unit 300. After the high-temperature equipment self-circulating cooling water releases the heat, it finally flows out from the high-temperature liquid outlet 141 and continues to perform the cooling task for the factory equipment. When the general contract system 100 is connected with multiple heat exchange units 300, since each heat exchange unit 300 has heat exchange capacity, the number of heat exchange units 300 connected to the general contract system 100 can be adaptively adjusted according to changes in heating conditions. For example, in a factory in winter, the ambient temperature is lower than in other seasons, the heating demand of factory workshop employees increases, while the cooling demand of factory equipment decreases; therefore, when the modular HVAC heat exchanger is used to heat the workshop employees, the number of heat exchange units 300 connected to the general contract system 100 can be increased accordingly; when the modular HVAC heat exchanger is used to cool the factory equipment, the number of heat exchange units 300 connected to the general contract system 100 can be reduced accordingly; based on the above adjustment, the reasonable allocation and use of resources is achieved. In addition, when a heat exchange unit 300 fails and cannot work normally, the heat exchange unit 300 can be dismantled, replaced or repaired without affecting the normal operation of other heat exchange units 300, thereby ensuring the normal use of the modular HVAC heat exchanger.

[0032] As a further solution of this embodiment: the connecting component includes four flow channels 210, and the flow channel 210 includes a low-temperature liquid inlet flow channel, a low-temperature liquid outlet flow channel, a high-temperature liquid inlet flow channel, and a high-temperature liquid outlet flow channel; the low-temperature liquid inlet flow channel connects the low-temperature liquid inlet 111 and the secondary low-temperature liquid inlet 311; the low-temperature liquid outlet flow channel connects the low-temperature liquid outlet 121 and the secondary low-temperature liquid outlet 312; the high-temperature liquid inlet flow channel connects the high-temperature liquid inlet 131 and the secondary high-temperature liquid inlet 321; the high-temperature liquid outlet flow channel connects the high-temperature liquid outlet 141 and the secondary high-temperature liquid outlet 322; the junction of the flow channel 210 and the above-mentioned each secondary flow channel inlet and outlet is a sealing surface, the sealing surface of the flow channel 210 adopts an inner conical surface, and the sealing surfaces of the above-mentioned each secondary flow channel inlet and outlet adopt an outer conical surface, the tapers of the inner and outer conical surfaces are the same, and can form a tight fit.

[0033] Furthermore, the connecting component also includes four liquid carrying boxes, namely, a low-temperature liquid inlet box 110, a low-temperature liquid outflow box 120, a high-temperature liquid inlet box 130, and a high-temperature liquid outflow box 140; a low-temperature liquid inlet 111 is provided in the low-temperature liquid inlet box 110, a low-temperature liquid outlet 121 is provided in the low-temperature liquid outflow box 120, a high-temperature liquid inlet 131 is provided in the high-temperature liquid inlet box 130, and a high-temperature liquid outlet 141 is provided in the high-temperature liquid outflow box 140; the above four boxes are connected through the low-temperature liquid inlet flow channel, the low-temperature liquid outlet The flow channel, high-temperature liquid inlet flow channel, and high-temperature liquid outlet flow channel are respectively connected with the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid outlet 312, the secondary high-temperature liquid inlet 321, and the secondary high-temperature liquid outlet 322 of multiple heat exchange units 300 in sequence; the four liquid carrying boxes are rectangular, the low-temperature liquid inlet box 110 is arranged inside the high-temperature liquid inlet box 130, and the low-temperature liquid outflow box 120 is arranged inside the high-temperature liquid outflow box 140, and the high-temperature liquid inflow box 130 and the high-temperature liquid outflow box 140 are arranged in an upper and lower interval.

[0034] Taking the general control system 100 connected to a single heat exchange unit 300 as an example, the specific flow process of the low-temperature liquid and the high-temperature liquid in the modular HVAC heat exchanger is as follows: the low-temperature liquid flows in from the low-temperature liquid inlet 111, and flows through the low-temperature liquid inlet box 110, the low-temperature liquid inlet flow channel, the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid flow channel, the secondary low-temperature liquid outlet 312, the low-temperature liquid outlet flow channel, the low-temperature liquid outflow box 120 in sequence, and finally flows out from the low-temperature liquid outlet 121; the high-temperature liquid flows in from the high-temperature liquid inlet 131, and flows through the high-temperature liquid inlet box 130, the high-temperature liquid inlet flow channel, the secondary high-temperature liquid inlet 321, the secondary high-temperature liquid flow channel, the secondary high-temperature liquid outlet 322, the high-temperature liquid outlet flow channel, the high-temperature liquid outflow box 140 in sequence, and finally flows out from the high-temperature liquid outlet 141. By setting the sealing surface at the junction of the flow channel 210 and the inlet and outlet of the secondary flow channel as an inner cone and an outer cone; on the one hand, the flow channel 210 has a good automatic centering effect when combined with the inlet and outlet of the secondary flow channel, which facilitates the connection between the two; on the other hand, the cone seal has the characteristics of self-tightening sealing, that is, under the action of pressure, the pressure between the sealing surfaces will increase with the increase of pressure, thereby improving the sealing effect. By setting the above four types of boxes, on the one hand, it is to appropriately extend the heat exchange time of the low-temperature liquid and the high-temperature liquid, so that the two liquids have sufficient time to fully exchange heat; on the other hand, by setting the low-temperature liquid carrying box inside the high-temperature liquid carrying box, the heat exchange area of ​​the low-temperature liquid carrying box and the high-temperature liquid carrying box is increased; the heat exchange effect between the low-temperature liquid and the high-temperature liquid is enhanced by the above two aspects.

[0035] As a further solution of this embodiment: the connecting component also includes a cleaning component 220; the cleaning component 220 includes an annular shell 221, a cleaning box 222, and a piston 223; at the sealing surface, a plurality of circular holes are evenly opened along the circumferential direction of the flow channel 210; the annular shell 221 is arranged around the outer layer of all the circular holes and completely covers all the circular holes, and the annular shell 221 and the outer surface of the flow channel 210 form an annular pipeline; the cleaning box 222 is a closed box body, which is filled with cleaning liquid; the cleaning box 222 is located above the annular shell 221 and is connected to the annular shell 221, and a one-way flow component 230 is provided at the connection between the two; the upper half of the cleaning box 222 is connected to the piston 223, and the piston 223 is arranged between the heat exchange unit 300 and the cleaning box 222; when all the sealing surfaces are tightly combined, the heat exchange unit 300 first contacts the piston 223 and compresses it.

[0036] Furthermore, the clean liquid in the clean box 222 will not interfere with the low-temperature liquid or high-temperature liquid in the flow channel 210; the one-way flow component 230 can ensure that the clean liquid in the clean box 222 flows into the annular shell 221 without backflow; when the heat exchange unit 300 is completely separated from the general bearing system 100, the piston 223 compressed by the heat exchange unit 300 can reset itself.

[0037] When the piston 223 is not compressed by the heat exchange unit 300, the pressure in the cleaning box 222 remains unchanged, the one-way flow component 230 is in a closed state, and the liquid in the cleaning box 222 cannot flow into the annular shell 221; at this time, the flow channel 210 is not combined with the inlet and outlet of the secondary flow channel, that is, the heat exchange unit 300 is not connected to the general bearing system 100. When the piston 223 is compressed by the heat exchange unit 300, the pressure in the cleaning box 222 gradually increases as the piston 223 is compressed, and the liquid in the cleaning box 222 squeezes the one-way flow component 230 under the action of pressure. When the pressure reaches a certain level, the one-way flow component 230 opens under the action of liquid squeezing, and the liquid in the cleaning box 222 flows to the annular shell 221 through the connection between the cleaning box 222 body and the annular shell 221. Since the cleaning box 222 body is above the arc shell, the cleaning liquid can flow into the entire annular shell 221 under the action of its own gravity, and flow into the flow channel 221 from the multiple circular holes opened on the flow channel. 10 inner surface; at the same time, the inlet and outlet of the flow channel 210 and the secondary flow channel are gradually combined, and the cleaning liquid flowing into the inner surface of the flow channel 210 will also gradually clean the outer surfaces of the inlet and outlet of the secondary flow channel. As the sealing surface of the flow channel 210 and the inlet and outlet of the secondary flow channel gradually increases, the cleaning area of ​​the sealing surface by the cleaning liquid also gradually increases; when the combined area of ​​the sealing surface reaches a certain level, the heat exchange unit 300 stops compressing the piston 223. At this time, the pressure in the cleaning box 222 stops increasing, the cleaning liquid loses the pressure push, the one-way flow component 230 is closed, and the remaining cleaning liquid is retained in the cleaning box 222.

[0038] As a further solution of this embodiment: the one-way flow component 230 includes a blocking body 231 and a return spring 232; the inner hole at the connection point between the cleaning box 222 and the annular outer shell 221 is a vertical inner hole 233, and the circular hole opened on the cleaning box 222 corresponding to the vertical inner hole 233 is a cleaning circular hole 234; the diameter of the vertical inner hole 233 is larger than the diameter of the cleaning circular hole 234; the blocking body 231 is arranged inside the vertical inner hole 233 and completely closes the cleaning circular hole 234, but the blocking body 231 cannot close the vertical inner hole 233; a return spring 232 is arranged between the blocking body 231 and the inner surface of the vertical inner hole 233; when the piston 223 is compressed, the internal pressure of the cleaning box 222 increases, and the increased pressure pushes the blocking body 231 to move along the axial direction of the vertical inner hole 233 and gradually away from the cleaning circular hole 234, at which time the return spring 232 is in a compressed state.

[0039] Furthermore, the one-way flow component 230 also includes a support plate 235 and an arc plate 236. The support plate 235 is arranged inside the vertical inner hole 233 along its radial direction. The support plate 235 does not close the vertical inner hole 233. A group of symmetrical arc plates 236 are arranged on the support plate 235. The inner layer of the arc plate 236 is a reset spring 232 and a blocking body 231. The reset spring 232 is connected to the support plate 235.

[0040] When the piston 223 is not compressed by the heat exchange unit 300, the pressure in the cleaning box 222 remains unchanged, the plugging body 231 completely closes the cleaning circular hole 234, and the cleaning liquid in the cleaning box 222 cannot flow into the annular shell 221 through the vertical inner hole 233. When the piston 223 is compressed by the heat exchange unit 300, the pressure in the cleaning box 222 gradually increases as the piston 223 is compressed, and the cleaning liquid squeezes the plugging body 231 under the action of pressure. When the squeezing force of the cleaning liquid is greater than the thrust of the return spring 232, the plugging body 231 is pushed away from the cleaning circular hole 234 under the action of pressure, and the return spring 232 is in a compressed state at this time; the cleaning liquid in the cleaning box 222 flows through the cleaning circular hole 234, the vertical inner hole 233, and the annular shell 221, and finally flows to the sealing surface through the multiple circular holes opened on the flow channel 210. When the piston 223 stops compressing, the pressure in the cleaning box 222 stops increasing, and the cleaning liquid loses the pressure push and can only flow downward by its own gravity. At this time, the plugging body 231 blocks the cleaning circular hole 234 under the thrust of the return spring 232, and the remaining cleaning liquid remains in the cleaning box 222. Since the outer layer of the plugging body 231 and the return spring 232 is a set of symmetrical arc plates 236, the arc plates 236 can ensure that the return spring 232 can move along the axis direction of the vertical inner hole 233 when it is compressed or reset, so that the plugging body 231 can accurately close the cleaning circular hole 234.

[0041] As a further solution of this embodiment: the lower half of the interior of the cleaning box 222 is filled with cleaning liquid, and the upper half of the interior is filled with air.

[0042] When the piston 223 is compressed by the heat exchange unit 300 and the squeezing force of the cleaning liquid is greater than the thrust of the return spring 232, the cleaning liquid inside the cleaning box 222 flows through the cleaning circular hole 234, the vertical inner hole 233, the annular shell 221, and multiple circular holes opened on the flow channel 210, and finally flows to the sealing surface, continuously cleaning the inner conical surface of the flow channel 210 and the outer conical surface end of the secondary flow channel inlet and outlet. As the outer conical surface continues to penetrate into the inner conical surface, the cleaning liquid in the cleaning box 222 continuously flows to the sealing surface under the compression of the piston 223; when the cleaning liquid in the cleaning box 222 is exhausted, the piston 223 compresses the air in the cleaning box 222 along the cleaning circular hole 234, the vertical inner hole 233, the annular shell 221, and multiple circular holes opened on the flow channel 210, and finally flows to the sealing surface, using air to blow away the cleaning liquid and impurities on the sealing surface. At this time, the general bearing system 100 and the heat exchange unit 300 are connected, the sealing surface can play a sealing role, and the heat exchange unit 300 also stops compressing the piston 223. The piston 223 stops compressing so that the one-way flow component 230 closes the cleaning hole 234. At this time, the cleaning liquid and air inside the cleaning box 222 are consumed.

[0043] As a further solution of this embodiment: the cleaning component 220 also includes a replenishing pipeline 224, a liquid control valve 225, and a gas control valve 226; one end of the replenishing pipeline 224 corresponds to the lower half of the cleaning box 222, and the other end corresponds to the low-temperature liquid inlet 111 or the high-temperature liquid inlet 131; the replenishing pipeline 224 is provided with a liquid control valve 225; the gas control valve 226 is arranged in the upper half of the cleaning box 222; when the piston 223 is restored from the compressed state to the normal state, a negative pressure is formed inside the cleaning box 222, and clean liquid and air are respectively sucked in through the liquid control valve 225 and the gas control valve 226, and the clean liquid flows in from the lower half of the cleaning box 222, and the air flows in from the upper half of the cleaning box 222; at this time, the flow rate of the liquid control valve 225 is controlled to be less than the flow rate of the gas control valve 226, so that the lower half of the inside of the cleaning box 222 is clean liquid, and the upper half of the inside of the cleaning box 222 is air.

[0044] Furthermore, the supplementary pipeline 224 corresponding to the low-temperature liquid inlet flow channel has one end connected to the clean box 222, and the other end connected to the low-temperature liquid inflow box 110; the supplementary pipeline 224 corresponding to the low-temperature liquid outlet flow channel has one end connected to the clean box 222, and the other end connected to the low-temperature liquid outflow box 120; the supplementary pipeline 224 corresponding to the high-temperature liquid inlet flow channel has one end connected to the clean box 222, and the other end connected to the high-temperature liquid inflow box 130; the supplementary pipeline 224 corresponding to the high-temperature liquid outlet flow channel has one end connected to the clean box 222, and the other end connected to the high-temperature liquid outflow box 140; the junction of the clean liquid and air inside the clean box 222 is lower than the position of the gas control valve 226 to prevent the liquid position inside the clean box 222 from being too high and affecting the air intake of the gas control valve 226.

[0045] The heat exchange unit 300 connected to the general bearing system 100 is disassembled, and the piston 223 compressed by the heat exchange unit 300 is lost, and the compressed state is restored to the normal state. Since the cleaning liquid and air inside the cleaning box 222 have been exhausted, and the blocking body 231 completely closes the cleaning hole 234, there is no air replenishment inside the cleaning box 222, and a negative pressure is formed inside the cleaning box 222; at this time, the liquid control valve 225 and the gas control valve 226 are opened, and the cleaning liquid and air are sucked into the cleaning box 222 under the action of the negative pressure inside the cleaning box 222, and the cleaning liquid flows in from the lower half of the cleaning box 222, and the air flows in from the upper half of the cleaning box 222; at the same time, the flow rate of the liquid control valve 225 is controlled to be smaller than the flow rate of the gas control valve 226, and the speed at which the air is sucked into the cleaning box 222 is greater than the speed at which the cleaning liquid is sucked into the cleaning box 222, thereby ensuring that the lower half of the cleaning box 222 is clean liquid and the upper half of the cleaning box 222 is air. The above design realizes automatic replenishment of the cleaning liquid and air inside the cleaning box 222, so that the sealing surfaces of the heat exchange unit 300 and the general bearing system 100 can be cleaned in time when the heat exchange unit 300 and the general bearing system 100 are connected next time. The replenishment pipeline 224 and the flow channel 210 where it is located are connected to the same liquid carrying box, that is, the two are connected to the same liquid inlet and outlet, so as to ensure that when cleaning the sealing surface, the cleaning liquid remaining on the sealing surface will not interfere with the liquid in the flow channel 210.

[0046] As a further solution of this embodiment: the connecting component also includes an automatic sealing component 240, which includes an upper baffle 241, a lower baffle 242, a support spring 243, and a push rod 244; the upper baffle 241 is fixedly connected to the upper half of the interior of the flow channel 210; the lower baffle 242 is located in the lower half of the interior of the flow channel 210 and is in direct contact with the upper baffle 241; the upper baffle 241 and the lower baffle 242 can completely close the flow channel 210; a support spring 243 is arranged between the inner surface of the flow channel 210 and the lower baffle 242; the push rod 244 is opposite to the lower baffle 242, and the push rod 244 is respectively arranged at the front end of the secondary low-temperature liquid inlet and outlet and the secondary high-temperature liquid inlet and outlet, and is parallel to the axial direction of the two inlets.

[0047] Furthermore, a first transverse plate 245 is arranged inside the flow channel 210 along its radial direction, and the first transverse plate 245 cannot close the flow channel 210, and the first transverse plate 245 is only used to connect the support spring 243, and the other end of the support spring 243 is still connected to the lower baffle plate 242; the upper baffle plate 241, the lower baffle plate 242, the support spring 243, and the first transverse plate 245 do not contact the sealing surface of the flow channel 210; a second transverse plate 246 is arranged at the front end of the secondary low-temperature liquid inlet and outlet and the secondary high-temperature liquid inlet and outlet, that is, the front end of the outer cone surface, and the second transverse plate 246 cannot close the secondary low-temperature liquid inlet and outlet and the secondary high-temperature liquid inlet and outlet, and cannot interfere with their sealing cooperation with the flow channel 210; the second transverse plate 246 is only used to install the top rod 244, and is perpendicular to the top rod 244.

[0048] When the heat exchange unit 300 and the main bearing system 100 are connected, the outer conical surface of the inlet and outlet of the secondary flow channel continues to penetrate along the inner conical surface of the flow channel 210, and the push rod 244 located at the front end of the outer conical surface continues to approach the lower baffle until it touches the lower baffle 242, and finally pushes the lower baffle 242 along the axial direction of the flow channel 210, so that a distance is spaced between the lower baffle 242 and the upper baffle 241, and the liquid in the flow channel 210 flows to the inlet and outlet of the secondary flow channel along the distance between the upper baffle 241 and the lower baffle 242, and the automatic sealing component 240 is in an open state; at this time, the sealing surface has completed a tight fit, and the liquid in the flow channel 210 will not leak at the sealing surface. When the heat exchange unit 300 is removed from the main bearing system 100, the outer cone surface of the inlet and outlet of the secondary flow channel is separated from the inner cone surface of the flow channel 210, and the push rod 244 located at the front end of the outer cone surface no longer pushes the lower baffle plate. The lower baffle plate 242 is reset under the action of the support spring 243. Finally, the lower baffle plate 242 directly contacts the upper baffle plate 241, and the automatic sealing component 240 is in a closed state. The liquid in the flow channel 210 is completely blocked by the upper baffle plate 241 and the lower baffle plate 242, and the automatic circulation component is separated from the main bearing system 100.

[0049] As a further solution of this embodiment: the heat exchange unit 300 also includes a unit box 330, an intermediate hose 340, and a conventional partition-type heat exchanger 350; the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid outlet 312, the secondary high-temperature liquid inlet 321, and the secondary high-temperature liquid outlet 322 are all opened in the unit box 330; the conventional partition-type heat exchanger 350 is arranged inside the unit box 330; the basic low-temperature liquid inlet, basic low-temperature liquid outlet, basic high-temperature liquid inlet, and basic high-temperature liquid outlet of the conventional partition-type heat exchanger 350 are connected to the secondary low-temperature liquid inlet 311, the secondary low-temperature liquid outlet 312, the secondary high-temperature liquid inlet 321, and the secondary high-temperature liquid outlet 322 in sequence through the intermediate hose 340.

[0050] Furthermore, the secondary low-temperature liquid flow channel can be replaced by the tube side of a conventional partition-type heat exchanger 350, and the secondary high-temperature liquid flow channel can be replaced by the shell side of a conventional partition-type heat exchanger 350; the inlet and outlet of the secondary low-temperature liquid flow channel can be replaced by the inlet and outlet of the tube side, and the inlet and outlet of the secondary high-temperature liquid flow channel can be replaced by the inlet and outlet of the shell side; the general bearing system 100 also includes a system shell 150, and the system shell 150 is provided with through holes and cavities to facilitate the installation of a liquid carrying box, a connecting component, and a heat exchange unit 300.

[0051] By setting up the unit box 330, different types of conventional partition-type heat exchangers 350 can be set inside it, and the conventional partition-type heat exchanger 350 can be directly used as a heat exchange unit 300, without the need to perform adaptability design for the conventional partition-type heat exchanger 350, which greatly improves the adaptability and flexibility of use of this embodiment. The important parts of the modular HVAC heat exchanger are installed inside the system housing 150 to avoid damage to the important parts caused by the external environment, such as rust.

Claims

1. A modular HVAC heat exchanger, comprising a first low-temperature liquid inlet (111), a first low-temperature liquid outlet (121), a first high-temperature liquid inlet (131), and a first high-temperature liquid outlet (141); characterized in that: The invention also comprises a general control system (100) and a plurality of heat exchange units (300); a first low-temperature liquid inlet (111), a first low-temperature liquid outlet (121), a first high-temperature liquid inlet (131), and a first high-temperature liquid outlet (141) are all provided in the general control system (100); the general control system (100) comprises a plurality of connecting components; a single heat exchange unit (300) comprises secondary flow channels for mutual heat exchange, namely, a secondary low-temperature liquid flow channel and a secondary high-temperature liquid flow channel; the secondary low-temperature liquid flow channel is respectively provided with a secondary low-temperature liquid inlet (311) and a secondary low-temperature liquid outlet (312); the secondary high-temperature liquid flow channel is respectively provided with a secondary high-temperature liquid inlet (321), a secondary high-temperature liquid outlet (322), and a secondary high-temperature liquid outlet (323). The main control system (100) is connected to the secondary low-temperature liquid inlet (311), the secondary low-temperature liquid outlet (312), the secondary high-temperature liquid inlet (321), and the secondary high-temperature liquid outlet (322) of the plurality of heat exchange units (300) in sequence through a plurality of connecting components; the connecting component comprises four first flow channels (210), the first flow channel (210) comprising a low-temperature liquid inlet flow channel, a low-temperature liquid outlet flow channel, a high-temperature liquid inlet flow channel, and a high-temperature liquid outlet flow channel; the low-temperature liquid inlet flow channel connects the first low-temperature liquid inlet (111) and the secondary low-temperature liquid inlet (311); the low-temperature liquid outlet flow channel The high-temperature liquid inlet flow channel connects the first low-temperature liquid outlet (121) and the secondary low-temperature liquid outlet (312); the high-temperature liquid inlet flow channel connects the first high-temperature liquid inlet (131) and the secondary high-temperature liquid inlet (321); the high-temperature liquid outlet flow channel connects the first high-temperature liquid outlet (141) and the secondary high-temperature liquid outlet (322); the junction of the inlet and outlet of the first flow channel (210) and the secondary flow channel is a sealing surface, the sealing surface of the first flow channel (210) adopts an inner conical surface, and the sealing surfaces of the inlet and outlet of each of the above-mentioned secondary flow channels adopt an outer conical surface, the tapers of the inner and outer conical surfaces are the same, and can form a tight fit; the connecting component also includes a cleaning component (220); the cleaning component The component (220) comprises a circular outer shell (221), a cleaning box (222), and a piston (223); a plurality of circular holes are evenly opened at the sealing surface along the circumferential direction of the first flow channel (210); the circular outer shell (221) surrounds the outer layer of the circular holes arranged in all the first flow channels (210) and completely covers all the circular holes, and the circular outer shell (221) and the outer surface of the first flow channel (210) form an annular pipeline; the cleaning box (222) is a closed box body, and a cleaning liquid is filled therein; the cleaning box (222) is located above the circular outer shell (221) and is connected to the circular outer shell (221), and a one-way flow component (230) is provided at the connection point between the two;The upper half of the cleaning box (222) is connected to the piston (223), and the piston (223) is arranged between the heat exchange unit (300) and the cleaning box (222); when all the sealing surfaces are tightly combined, the heat exchange unit (300) first contacts the piston (223) and compresses it; the one-way flow component (230) includes a blocking body (231) and a return spring (232); the inner hole at the connection point between the cleaning box (222) and the annular shell (221) is a vertical inner hole (233), and the circular hole on the cleaning box (222) corresponding to the vertical inner hole (233) is a cleaning circular hole (234); the diameter of the vertical inner hole (233) is larger than the diameter of the cleaning circular hole (234); The plugging body (231) is arranged inside the vertical inner hole (233) and completely closes the cleaning circular hole (234), but the plugging body (231) cannot close the vertical inner hole (233); the return spring (232) is arranged between the plugging body (231) and the inner surface of the vertical inner hole (233); when the piston (223) is compressed, the pressure inside the cleaning box (222) increases, and the increased pressure pushes the plugging body (231) to move along the axial direction of the vertical inner hole (233) and gradually away from the cleaning circular hole (234), at which time the return spring (232) is in a compressed state; the lower half of the interior of the cleaning box (222) is a cleaning liquid, and the upper half of the interior is air. ; 2. The modular HVAC heat exchanger according to claim 1, characterized in that: The cleaning component (220) further comprises a replenishing pipeline (224), a liquid control valve (225), and a gas control valve (226); one end of the replenishing pipeline (224) is correspondingly connected to the lower half of the cleaning box (222), and the other end is correspondingly connected to the first low-temperature liquid inlet (111) or the first high-temperature liquid inlet (131); the replenishing pipeline (224) is provided with the liquid control valve (225); the gas control valve (226) is provided at the upper half of the cleaning box (222); when the piston (223) recovers from the compressed state When the cleaning box (222) reaches the normal state, negative pressure is formed inside the cleaning box (222), and cleaning liquid and air are sucked in through the liquid control valve (225) and the gas control valve (226) respectively. Cleaning liquid flows in from the lower half of the cleaning box (222), and air flows in from the upper half of the cleaning box (222). At this time, the flow rate of the liquid control valve (225) is controlled to be smaller than the flow rate of the gas control valve (226), so that the lower half of the cleaning box (222) is clean liquid, and the upper half of the cleaning box (222) is air.

3. The modular HVAC heat exchanger according to claim 1, characterized in that: The connecting component further comprises an automatic sealing component (240), the automatic sealing component (240) comprising an upper baffle (241), a lower baffle (242), a support spring (243), and a push rod (244); the upper baffle (241) is fixedly connected to the upper half of the first flow channel (210); the lower baffle (242) is located in the lower half of the first flow channel (210) and is in direct contact with the upper baffle (241); the upper baffle (241) and the lower baffle (242) are capable of completely sealing the first flow channel (210); the support spring (243) is arranged between the inner surface of the first flow channel (210) and the lower baffle (242); the push rod (244) is directly opposite to the lower baffle (242), and the push rod (244) is respectively arranged at the front ends of the secondary low-temperature liquid inlet and outlet and the secondary high-temperature liquid inlet and outlet, and is parallel to the axial direction of the two inlets.

4. The modular HVAC heat exchanger according to claim 1, characterized in that: The heat exchange unit (300) further comprises a unit box (330), an intermediate hose (340), and a conventional partition-type heat exchanger (350); the secondary low-temperature liquid inlet (311), the secondary low-temperature liquid outlet (312), the secondary high-temperature liquid inlet (321), and the secondary high-temperature liquid outlet (322) are all provided in the unit box (330); the conventional partition-type heat exchanger (350) is arranged inside the unit box (330); the conventional partition-type heat exchanger (350) comprises a basic low-temperature liquid inlet The basic low-temperature liquid inlet is connected to the secondary low-temperature liquid inlet (311) through the intermediate hose (340), the basic low-temperature liquid outlet is connected to the secondary low-temperature liquid outlet (312) through the intermediate hose (340), the basic high-temperature liquid inlet is connected to the secondary high-temperature liquid inlet (321) through the intermediate hose (340), and the basic high-temperature liquid outlet is connected to the secondary high-temperature liquid outlet (322) through the intermediate hose (340).

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