Plate heat exchanger
By introducing pre-cooling mechanisms and air-cooled pipes into the plate heat exchanger, and using air cooling and heat dissipation diverters, the problem of high-temperature heat media not being able to cool down rapidly is solved, and efficient heat media cooling and stable operation of the equipment is achieved.
Patent Information
- Application Number
- CN202422367424.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When existing plate heat exchangers work at high loads or when the ambient temperature is too high, the thermal medium cannot quickly cool down to a qualified temperature, resulting in equipment failure and reduced service life.
The pre-cooling mechanism is adopted, including the pre-cooling pipe and the air-cooling pipe, through the air cooling and air flow channels, the heat dissipation guide plate is used to improve the heat exchange efficiency, and the preliminary cooling of high-temperature thermal media is achieved.
It effectively solves the problem that high-temperature thermal media cannot cool down rapidly, improves the working efficiency and service life of the equipment, and can still quickly cool down to the standard temperature in severe scaling.
Smart Images
Figure CN223154070U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plate heat exchangers, and particularly relates to a plate heat exchanger. Background Art
[0002] A plate heat exchanger is a heat exchange device. Specifically, heat exchange between a heat medium and a refrigerant is achieved through the plate heat exchanger. On the one hand, the heat medium can be rapidly cooled, and on the other hand, the recovery and utilization of heat energy can be realized.
[0003] Due to its energy conservation, environmental protection, and high heat exchange efficiency, the plate heat exchanger is widely used in industries, such as being applied to a heat pump unit for cooling the heat medium of the heat pump unit.
[0004] However, in the actual working process, when a heat medium at a certain temperature passes through the plate heat exchanger and heat exchange is completed, normally, the heat medium can be cooled to a temperature that does not meet the standard. When the equipment operates at high load or the ambient temperature is too high, at this time, the overheated heat medium cannot be rapidly cooled after passing through the plate heat exchanger, and the temperature of the heat medium after heat exchange cannot reach the qualified temperature. At this time, due to the insufficient cooling of the heat medium, it cannot continue to circulate back to the working equipment, or the high-temperature medium that is not sufficiently cooled circulates back to the equipment, resulting in equipment malfunctions.
[0005] The reason for the above technical defect is that the heat exchange efficiency of the heat exchanger is fixed, and the heat exchange efficiency is related to the number and size of the heat exchange plates installed. The model of the heat exchanger used in the equipment is often fixed. With the increase of the service life of the equipment, the scale in the heat exchanger increases, and factors such as high-load operation of the equipment and too high ambient temperature lead to a significant reduction in the heat exchange efficiency. The heat medium cannot be quickly cooled to the qualified temperature after passing through the heat exchanger, resulting in a further reduction in the service life of the equipment. Summary of the Utility Model
[0006] Based on the above background, the purpose of the utility model is to provide a plate heat exchanger.
[0007] To achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A plate heat exchanger includes a plate heat exchanger body, and a heat medium inlet pipe is assembled and connected to the plate heat exchanger body, and a pre-cooling mechanism is assembled and connected to the heat medium inlet pipe;
[0009] The pre-cooling mechanism includes a pre-cooling pipe mechanism, and the pre-cooling pipe mechanism includes a plurality of pre-cooling pipes;
[0010] Shunt plates are respectively assembled and connected to the water inlet end and the water outlet end of the pre-cooling pipe; the shunt plate connected to the water outlet end is assembled and connected to the heat medium inlet pipe that is connected to the shunt plate;
[0011] The pre-cooling pipes are arranged on both sides of the shunt plate, and a cooling air flow channel is formed between the pre-cooling pipes. On the side walls of the shunt plate facing each other, air-cooling pipes are fixedly connected respectively, and a plurality of exhaust holes are formed in the air-cooling pipes.
[0012] A blower is communicated with the air-cooling pipe.
[0013] Preferably, pre-cooling pipes are respectively communicated between the left and right sides of the shunt plate.
[0014] The pre-cooling pipe includes a plurality of vertically arranged vertical pipe parts, and the upper and lower ends of adjacent vertical pipe parts are integrally formed through arc pipe parts arranged in an upper and lower staggered manner.
[0015] Preferably, the water inlet end and the water outlet end of the pre-cooling pipe are respectively assembled and communicated with the shunt plate through an assembly connecting pipe.
[0016] Preferably, a pump air pipe is communicated with the left end of the air-cooling pipe, and the pump air pipe is assembled and communicated with the blower.
[0017] Preferably, a plurality of heat dissipation guide plates arranged side by side are fixedly connected respectively between the upper end and the lower end of the heat medium inlet pipe.
[0018] The heat dissipation guide plates at the upper and lower end positions and the pre-cooling pipes distributed on both sides together form a cooling air flow channel.
[0019] Preferably, the heat dissipation guide plate includes a rectangular plate part, and curved plate parts are integrally formed at both ends of the rectangular plate part, and the curved plate parts are fixedly connected to the pre-cooling pipe.
[0020] Preferably, the curved plate part of the heat dissipation guide plate at the upper end position is fixedly connected to the upper end of the vertical pipe part, and the curved plate part of the heat dissipation guide plate at the lower end position is fixedly connected to the lower end position of the vertical pipe part.
[0021] Preferably, a cavity is formed in the shunt plate.
[0022] The shunt plate at the water inlet end is communicated with a pump heat medium pipeline, and the shunt plate at the water outlet end is communicated with a pump pipe, and the pump pipe is fixedly installed on the heat medium inlet pipe through a flange.
[0023] Preferably, the pre-cooling pipe is made of copper with excellent heat conduction performance.
[0024] The utility model has the following beneficial effects:
[0025] 1. The pre-cooling mechanism solves the technical problems that when the heat exchanger is used for a longer time, the internal scale increases, resulting in a significant reduction in the heat exchange efficiency, and factors such as high-load operation of the equipment (resulting in a relatively high temperature of the heat medium), high ambient temperature, etc., which cause the heat exchanger to be unable to quickly cool the high-temperature heat medium within a short time, thus seriously affecting the normal working efficiency of the equipment.
[0026] 2. The pre-cooling pipes are in a serpentine shape, thereby greatly increasing the heat exchange path, achieving the initial cooling of the high-temperature heat medium, and enabling the heat medium after the initial cooling to enter the heat exchanger and be quickly cooled again after re-heat exchange due to the temperature reduction.
[0027] 3. In the working process, the pre-cooling pipes on both sides are at a very high temperature because they pass through the high-temperature heat medium. At this time, under the operation of the blower, the air flow blows towards the pre-cooling pipes with a serpentine shape on both sides. Part of the air flow passes through the gaps between the pre-cooling pipes, that is, it is discharged from the cooling air flow channel. Part of the air flow is blocked by the pre-cooling pipes and folds back to the cooling air flow channel and penetrates through the gaps between the heat dissipation guide plates.
[0028] Specifically, because the heat dissipation guide plates have excellent thermal conductivity, heat exchange occurs between the cooling air flow channel and the heat dissipation guide plates (meanwhile, the heat dissipation guide plates are fixed on the pre-cooling pipes, so heat exchange occurs between the pre-cooling pipes and the heat dissipation guide plates, realizing the use of the heat dissipation guide plates to further convert the thermal energy of the heat medium in the whole system). The air flow passes through between the heat dissipation guide plates, and because the gaps between adjacent heat dissipation guide plates are relatively small, a large amount of heat on the heat dissipation guide plates and the heat in the cooling air flow channel are carried out and discharged. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0030] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention;
[0031] Figure 2 It is a schematic diagram of the structure of the shunt plate fixedly connected to the air-cooled pipe in the embodiment of the present invention;
[0032] Figure 3 It is a schematic diagram of the structure of the heat dissipation guide plate fixedly connected to the pre-cooling pipe in the embodiment of the present invention;
[0033] Figure 4 It is a schematic diagram of the structure of the cooling air flow channel in the embodiment of the present invention;
[0034] Figure 5 This is a schematic diagram of the planar structure in the embodiment of the present utility model.
[0035] The realization of the purpose, functional features, and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments
[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.
[0038] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0039] Embodiment 1
[0040] As Figures 1-5 shown, a plate heat exchanger includes a plate heat exchanger body 1. The plate heat exchanger body 1 is a conventional plate heat exchanger disclosed in the prior art, and its main structure includes a frame part and heat exchange plates installed between the frame parts. Similar to the existing plate heat exchanger body 1, a hot medium inlet pipe 11, a cold medium inlet pipe, a cooled hot medium outlet pipe, and a heated cold medium outlet pipe are assembled and connected to the plate heat exchanger body 1.
[0041] When the usage time of the heat exchanger increases, the internal scale increases, resulting in a significant reduction in the heat exchange efficiency. In addition, factors such as high-load operation of the equipment (resulting in a relatively high temperature of the hot medium) and too high ambient temperature cause the heat exchanger to be unable to quickly cool the high-temperature hot medium in a short time, thereby seriously affecting the normal working efficiency of the equipment.
[0042] Therefore, the following improvements are made:
[0043] A precooling mechanism is assembled and connected to the heat medium inlet pipe 11; the precooling mechanism realizes preliminary cooling of the high-temperature heat medium, specifically by cooling with air.
[0044] Specifically, the precooling mechanism includes a precooling pipe mechanism, and the precooling pipe mechanism includes two precooling pipes 22 arranged at intervals; the precooling pipes 22 are made of copper, and the heat dissipation performance is very excellent.
[0045] And in order to improve the heat conduction effect, the above-mentioned precooling pipe 22 includes a number of vertically arranged vertical pipe parts 222, and the upper and lower ends of adjacent vertical pipe parts 222 are integrally formed by arc pipe parts 221 arranged in a staggered manner up and down.
[0046] Through the above structure, the precooling pipe 22 is formed into a serpentine path, thereby greatly increasing the heat exchange path, realizing preliminary cooling of the high-temperature heat medium, and then realizing that the heat medium after preliminary cooling can quickly cool down again after heat exchange when it enters the heat exchanger due to the temperature reduction.
[0047] Although a part of energy is lost, in the actual working process, especially when the fouling in the heat exchanger is serious, this method realizes assisting the heat exchanger to reduce the temperature of the heat medium to the standard temperature.
[0048] Effectively solves the technical defect that the heat medium cannot be quickly cooled in the above situation.
[0049] Specifically, a flow dividing disk 21 is assembled and connected to the water inlet end and the water outlet end of the above-mentioned precooling pipe 22 (specifically, the water inlet end and the water outlet end of the precooling pipe 22 are integrally formed with assembly connecting pipes with reduced diameters, and the assembly connecting pipes are assembled and connected to the flow dividing disk 21); the flow dividing disk 21 connected to the water outlet end is assembled and connected to the heat medium inlet pipe 11 of the flow dividing disk 21. Specifically, a cavity is formed in the flow dividing disk 21; the flow dividing disk 21 (left end) located at the water inlet end is connected to a pump heat medium pipeline (the heat medium of the working equipment is pumped from the pump heat medium pipeline), and the flow dividing disk 21 (right end) located at the water outlet end is connected to a pump pipe, and the pump pipe is fixedly installed on the heat medium inlet pipe 11 through a flange.
[0050] Embodiment 2
[0051] As Figures 1-5 shown, on the basis of the structure of Embodiment 1 in this embodiment, in order to further cool the high-temperature heat medium, especially the heat medium with a very high temperature (such as when the equipment is working at high load and the ambient temperature is too high). A cooling air flow channel A is formed between the above-mentioned precooling pipes 22, and air cooling pipes 23 are respectively fixedly connected to the mutually facing side walls of the flow dividing disks 21, and a number of long strip-shaped exhaust holes 231 are formed in the air cooling pipes 23; the exhaust holes 231 face the precooling pipes 22 on both sides.
[0052] Meanwhile, in the existing manner, a blower is connected to the above-mentioned air-cooling pipe 23.
[0053] The left end of the above-mentioned air-cooling pipe 23 is connected to a pump air pipe 232, and the pump air pipe 232 is assembled and connected to the blower. During the working process, the blower works, and at this time, the air flow blows from the exhaust hole position to both sides towards the pre-cooling pipe 22, realizing further rapid cooling of the pre-cooling pipe 22.
[0054] Embodiment 3
[0055] As Figures 1-5 shown, on the basis of the structure of Embodiment 2 in this embodiment, a plurality of heat dissipation guide plates 3 arranged side by side are fixedly connected between the upper end and the lower end of the above-mentioned heat medium inlet pipe 11; the heat dissipation guide plates 3 are made of thin silicon steel plates. Its shape is: the heat dissipation guide plate 3 includes a rectangular plate portion, and curved plate portions are integrally formed at both ends of the rectangular plate portion, and the curved plate portions are fixedly connected to the pre-cooling pipe 22.
[0056] During the working process, the pre-cooling pipes 22 on both sides are very hot because they pass through high-temperature heat medium. At this time, under the working of the blower, the air flow blows towards the pre-cooling pipes 22 with a serpentine path on both sides. Part of the air flow is discharged from the cooling air flow channel A through the gaps between the pre-cooling pipes 22. Part of the air flow is blocked by the pre-cooling pipes 22 and then turns back to the cooling air flow channel A and penetrates through the gaps between the heat dissipation guide plates 3.
[0057] Specifically, because the heat dissipation guide plate 3 has excellent heat conduction performance, heat exchange occurs between the cooling air flow channel A and the heat dissipation guide plate 3 (and since the heat dissipation guide plate 3 is fixed to the pre-cooling pipe 22, heat exchange also occurs between the pre-cooling pipe 22 and the heat dissipation guide plate 3, realizing the use of the heat dissipation guide plate 3 to further convert the heat energy of the heat medium in the pre-cooling pipe 22). And the air flow passes through between the heat dissipation guide plates 3, and because the gaps between adjacent heat dissipation guide plates 3 are small, a large amount of heat on the heat dissipation guide plates 3 and the heat in the cooling air flow channel A are carried away and discharged.
[0058] That is, the heat dissipation guide plates 3 at the upper and lower ends and the pre-cooling pipes 22 distributed on both sides together form the cooling air flow channel A.
[0059] The fixing method of the heat dissipation guide plate 3 is:
[0060] The curved plate portion of the heat dissipation guide plate 3 at the upper end is fixedly connected to the upper end of the vertical pipe portion 222, and the curved plate portion of the heat dissipation guide plate 3 at the lower end is fixedly connected to the lower end position of the vertical pipe portion 222.
[0061] Certainly, the above description is not a limitation to the present utility model, nor is the present utility model limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A plate heat exchanger, characterized in that, It comprises a plate heat exchanger body, a heat medium inlet pipe is assembled and connected to the plate heat exchanger body, and a precooling mechanism is assembled and connected to the heat medium inlet pipe; The precooling mechanism includes a precooling pipe mechanism, and the precooling pipe mechanism includes a plurality of precooling pipes; The water inlet and outlet ends of the precooling tube are respectively equipped with a diverter plate; the diverter plate connected to the water outlet is installed on the heat medium inlet pipe connected to the diverter plate; The precooling pipes are arranged on both sides of the diverter plate, and a cooling air flow channel is formed between the precooling pipes. The side walls of the diverter plate facing each other are respectively fixedly connected with air cooling pipes, and the air cooling pipes are provided with a plurality of exhaust holes. The air cooling pipe is connected with a blower.
2. The plate heat exchanger according to claim 1, characterized in that The left and right sides of the diverter plate are respectively connected with precooling pipes; The precooling tube comprises a plurality of vertically arranged vertical tube parts, and the upper and lower ends of adjacent vertical tube parts are formed in one piece by arc tube parts which are staggered up and down.
3. The plate heat exchanger according to claim 1, characterized in that, The water inlet end and the water outlet end of the precooling tube are respectively connected to the diverter plate through connecting pipes.
4. The plate heat exchanger according to claim 1, characterized in that, The left end of the air cooling pipe is connected with a pump air duct, and the pump air duct is assembled and connected to the blower.
5. The plate heat exchanger according to claim 2, characterized in that, A plurality of heat dissipation guide plates arranged side by side are fixedly connected between the upper end and the lower end of the heat medium inlet pipe; The heat dissipation guide plates at the upper and lower ends and the pre-cooling tubes distributed on both sides together form a cooling air flow channel.
6. The plate heat exchanger according to claim 5, characterized in that, The heat dissipation guide plate comprises a rectangular plate portion, and curved plate portions are integrally formed at both ends of the rectangular plate portion, and the curved plate portions are fixedly connected to the precooling tube.
7. The plate heat exchanger according to claim 6, characterized in that, The curved plate portion of the heat dissipation guide plate at the upper end is fixedly connected to the upper end of the vertical pipe portion, and the curved plate portion of the heat dissipation guide plate at the lower end is fixedly connected to the lower end of the vertical pipe portion.
8. The plate heat exchanger according to claim 1, characterized in that, A cavity is provided in the diverter plate; The diverter plate at the water inlet position is connected to a pump heat medium pipeline, and the diverter plate at the water outlet position is connected to a pump pipe, and the pump pipe is fixedly installed on the heat medium inlet pipe through a flange.
9. The plate heat exchanger according to claim 1, characterized in that, The precooling tube is made of copper with excellent thermal conductivity.