Heat exchanger capable of gathering medium precipitates

Abstract

The invention discloses a heat exchanger capable of gathering medium sediments, which comprises a shell in which a cavity is formed, and is characterized in that a heating medium pipe is arranged in the shell, the heating medium pipe comprises a liquid inlet and a liquid outlet, the liquid outlet is provided with a filtering assembly, the filtering assembly is used for filtering sediments in a gathering pipe, and the filtering assembly is used for filtering the sediments in the gathering pipe. The multiple heating medium pipes are combined into a heating medium pipe set, a sealing structure is arranged at the joint of the heating medium pipe set and the shell, a baffle plate is arranged between the heating medium pipe set and the inner wall of the shell, and a refrigerant channel is formed between the baffle plate and the inner wall of the shell. The heating medium pipe has the beneficial effects that the filtering assembly is arranged, sodium nitrate crystals generated by cooling in the heating medium pipe are precipitated, adsorbed and gathered at the position which does not affect liquid flowing, and the situation that the crystals are gathered at the position where the liquid flows in the pipe and hinder liquid flowing is prevented.

Description

Technical Field

[0001] The invention belongs to the field of heat exchangers, and specifically designs a heat exchanger capable of gathering medium precipitates. Background Art

[0002] In steel production, sodium nitrate is often used as a coolant to cool steel after high-temperature processes. After the cooling process, industrial wastewater containing sodium nitrate will be formed. Due to the heat exchange in the cooling process, the wastewater still has a relatively high temperature, usually reaching between tens of degrees Celsius and one hundred degrees Celsius. In order to save energy, this part of the heat can be used to heat other objects through a heat exchanger, but the solubility of sodium nitrate solution decreases with decreasing temperature. Often in the later stage of heat exchange, as the temperature decreases, sodium sulfate crystals will precipitate in the sodium sulfate solution. The deposition of sodium sulfate crystals downstream of the heat exchange tube will hinder the liquid flow rate, reduce the liquid flow rate, and reduce the heat exchange efficiency, so that the cold medium after heat exchange does not receive a good heating effect. In order to solve customer problems, it is necessary to propose a heat exchanger that can filter and aggregate the precipitate so that it does not affect the flow of the liquid. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a heat exchanger capable of gathering medium precipitates, comprising a shell, a cavity in the shell, a heat medium tube arranged in the shell, the heat medium tube comprising a liquid inlet and a liquid outlet, the liquid outlet having a filter assembly, the filter assembly being used for filtering the precipitates in the gathering tube, a plurality of heat medium tubes are combined into a heat medium tube group, a sealing structure is arranged at the connection between the heat medium tube group and the shell, a baffle is arranged between the heat medium tube group and the inner wall of the shell, and a refrigerant channel is formed between the baffle and the inner wall of the shell.

[0004] The heat medium pipe and filter assembly are made of materials that do not react with potassium nitrate wastewater. The wastewater can be simply treated first to confirm that the components in the wastewater do not react with the heat exchanger material before passing into the heat exchanger.

[0005] The filter assembly includes a valve body, which is connected to the heat medium pipe. The valve body is provided with a valve cavity connected to the heat medium pipe. A filter element is provided in the valve cavity. The filter element includes a filter element. The filter element is connected to a driving element. The driving element drives the filter element to rotate. The rotation direction of the filter element conforms to the flow direction of the liquid. When the liquid with sediment flows through the filter assembly, the driving element drives the filter element to rotate. The filter element adsorbs the crystallized sediment in the filter element. At the same time, the rotation of the filter element can provide assistance to the flow of the liquid to accelerate the flow of the liquid and prevent the accumulation of sediment from slowing down the flow rate. The filter assembly is detachably connected to the heat medium pipe. After a period of use, the filter assembly can be disassembled to clean the internal sediment.

[0006] A flange is arranged on the valve body, the valve body and the heat medium pipe are connected by a flange, and a sealing gasket is arranged between the valve body and the heat medium pipe.

[0007] The filter element is configured as a honeycomb structure, and the filter element is provided with a plurality of blades distributed in a circular array. The filter element can be configured as a honeycomb structure with a plurality of blades, which helps to accommodate more sediment, and the rotational force generated by rotation is greater, which helps to increase the liquid flow rate.

[0008] The valve cavity includes a liquid inlet, a rotating part and a liquid outlet. The angle between the liquid inlet and the heat medium pipe is 60°-120°. The rotating part has a filter element. The bending direction of the elbow part is opposite to that of the filter element.

[0009] The angle between the liquid inlet and the heat medium pipe ensures that each time the liquid enters the rotating part, it forms an angle with the inner wall of the filter element's blades, which increases the contact area between the filter element and the liquid. The increase in the contact area between the filter element and the liquid allows more precipitation to be adsorbed in the filter element, and the filter element can also drive more liquid flow.

[0010] The angle should not be too large or too small. If the angle is too large, the direction of the liquid entering will initially contact the back of the blade. Since the direction of rotation of the blade is in line with the flow direction of the liquid, the liquid will be driven by the filter element to flow directly along the arc surface to the liquid outlet. The liquid has a short stroke through the rotating part, and the contact time with the filter element is also short. The contact area is small when the filter element rotates, resulting in poor filtering effect or even failure to filter. If the angle is too small, the liquid will flow into the liquid inlet and will have a greater impact on the inner wall of the liquid inlet, resulting in excessive loss of kinetic energy, affecting the liquid flow rate and heat exchange efficiency.

[0011] A gathering groove is provided on the inner wall of at least one side of the rotating part. The gathering groove is arranged around the filter element and connected to the inner wall of the rotating part. The opening of the gathering groove is on the same plane as the inner wall of the rotating part. The rotation of the filter element will cause the surrounding liquid to rotate along with it. At this time, a certain centrifugal force will be generated. Part of the sediment will be adsorbed in the filter element, and part of the sediment will adhere to the inner wall of the rotating part under the action of centrifugal force. The gathering groove is set on the inner wall to allow the sediment to enter the gathering groove under the action of centrifugal force.

[0012] The rotating part can be provided with a gathering groove on one inner wall, or on multiple inner walls, or on all inner walls of a circle, or one inner wall can be provided with one gathering groove or multiple gathering grooves.

[0013] Preferably, a first valve cavity and a second valve cavity are arranged side by side in the valve body, a first filter element is arranged in the first valve cavity, and a second filter element is arranged in the second valve cavity. The first filter element and the second filter element work simultaneously to increase the filtering efficiency.

[0014] Preferably, the valve body includes a left half valve body and a right half valve body, the left half valve body is hinged to the right half valve body, a seal is arranged between the left half valve body and the right half valve body, the valve body can be opened and sealed in the middle, which is more conducive to cleaning the valve body, and the setting of the seal ensures the sealing of the valve body.

[0015] Preferably, the heat medium pipe is connected to an online turbidity detector, and the heat medium pipe is provided with a flow meter. The online turbidity detector is used to detect the turbidity of the liquid in the heat medium pipe, and the flow meter is used to detect the flow in the heat medium pipe and monitor whether the heat medium pipe is blocked.

[0016] Preferably, the filter assembly is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element. Since the precipitate is a crystal of sodium nitrate, and sodium nitrate is soluble in water and its solubility increases with increasing temperature, when cleaning the filter assembly, hot water can be used to flush the filter assembly to dissolve the sodium nitrate crystals in water again, and then the filter assembly is discharged, which makes cleaning convenient and quick.

[0017] Preferably, the heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter assembly. If there is no stop valve, it is necessary to wait until the heat exchanger is idle before cleaning the filter assembly. The stop valve is provided, and the stop valve can be closed when cleaning the filter assembly. The filter assembly can be cleaned either by disassembling the filter assembly or directly using hot water without disassembling the filter assembly. After the stop valve is closed, hot water is passed to clean the filter assembly, and the cleaning waste water can only flow out along the liquid outlet and cannot affect other places. The setting of the stop valve allows the filter assembly to be cleaned at any time when the heat exchanger is in use.

[0018] The present invention is beneficial in that:

[0019] 1. A filtering component is provided to adsorb the crystal precipitation of sodium nitrate in the heat medium tube due to cooling and gather it in a position that does not affect the flow of the liquid, so as to prevent the precipitation from gathering in the place where the liquid flows in the tube and hindering the flow of the liquid.

[0020] 2. The valve body is provided with a liquid inlet, a rotating part and a liquid outlet, which change the direction of liquid flow so that the liquid entering the valve body has maximum contact with the filter element, thereby enhancing the filtering effect of the filter element on the liquid. A gathering groove is provided in the rotating part to gather the sediment at a fixed point to prevent it from affecting the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute improper limitations on the present invention.

[0022] Figure 1 This is the overall structure diagram of the heat exchanger of Example 1;

[0023] Figure 2 This is a schematic diagram of the structure of the filter assembly of Example 1;

[0024] Figure 3 It is a top cross-sectional view of the filter assembly of Example 1;

[0025] Figure 4 is a top view cross-sectional view of the filter assembly of Example 2;

[0026] Figure 5 is a top cross-sectional view of the filter assembly of Example 3;

[0027] Figure 6 is a top cross-sectional view of the filter assembly of Example 4;

[0028] In the accompanying drawings: 1-shell, 11-liquid inlet, 12-liquid outlet, 2-filter assembly, 21-valve body, 211-liquid inlet part, 212-rotating part, 213-liquid outlet part, 22-filter element, 221-blades, 23-driving element, 24-flange, 25-aggregation tank, 2111-first liquid inlet part, 2121-first rotating part, 2131-first liquid outlet part, 2112-second liquid inlet part, 2122-second rotating part, 2132-second liquid outlet part, 2201-first filter element, 2202-second filter element. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] In addition, in the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] Example 1

[0035] like Figures 1 to 3 As shown, a heat exchanger capable of gathering medium precipitates comprises a shell 1, wherein a cavity is provided in the shell 1, a heat medium tube is arranged in the shell 1, the heat medium tube comprises a liquid inlet 11 and a liquid outlet 12, the liquid outlet 12 has a filter assembly 2, the filter assembly 2 is used for filtering the precipitates in the gathering tube, a plurality of heat medium tubes are combined into a heat medium tube group, a sealing structure is provided at the connection between the heat medium tube group and the shell 1, a baffle is provided between the heat medium tube group and the inner wall of the shell 1, and a refrigerant channel is formed between the baffle and the inner wall of the shell 1.

[0036] The filter assembly 2 includes a valve body 21, which is connected to the heat medium pipe. The valve body 21 is provided with a valve cavity connected to the heat medium pipe. A filter element is provided in the valve cavity. The filter element includes a filter element 22. The filter element 22 is connected to a driving element 23. The driving element 23 drives the filter element 22 to rotate. The rotation direction of the filter element 22 conforms to the flow direction of the liquid. When the liquid with sediment flows through the filter assembly 2, the driving element 23 drives the filter element 22 to rotate. The filter element 22 adsorbs the crystallized sediment in the filter element 22. At the same time, the rotation of the filter element 22 can provide assistance to the flow of the liquid to accelerate the flow of the liquid and prevent the accumulation of sediment to slow down the flow rate. The filter assembly 2 is detachably connected to the heat medium pipe. After a period of use, the filter assembly 2 can be disassembled to clean the internal sediment.

[0037] A flange 24 is provided on the valve body 21 , the valve body 21 is flange-connected to the heat medium pipe, and a sealing gasket is provided between the valve body 21 and the heat medium pipe.

[0038] The filter element 22 is configured as a honeycomb structure, and the filter element 22 is provided with a plurality of blades 221 distributed in a circular array. The filter element 22 can be configured as a honeycomb structure with a plurality of blades 221, which helps to accommodate more precipitation, and the rotational force generated when rotating is greater, which helps to increase the liquid flow rate.

[0039] The valve cavity includes a liquid inlet 211 , a rotating part 212 and a liquid outlet 213 . The angle between the liquid inlet 211 and the heat medium pipe is 60°. The rotating part 212 has a filter element 22 . The bending direction of the elbow is opposite to that of the filter element 22 .

[0040] The angle between the liquid inlet 211 and the heat medium pipe ensures that each time the liquid enters the rotating part 212, it forms an angle with the inner wall of the blade 221 of the filter element 22, which will increase the contact area between the filter element 22 and the liquid. The increase in the contact area between the filter element 22 and the liquid can make more precipitation adsorbed in the filter element 22, and the filter element 22 can also drive more liquid flow.

[0041] A gathering groove 25 is provided on the inner wall of at least one side of the rotating part 212. The gathering groove 25 is arranged around the filter element 22 and connected to the inner wall of the rotating part 212. The opening of the gathering groove 25 is on the same plane as the inner wall of the rotating part 212. The rotation of the filter element 22 will cause the surrounding liquid to rotate along with it. At this time, a certain centrifugal force will be generated. Part of the sediment will be adsorbed in the filter element 22, and part of the sediment will adhere to the inner wall of the rotating part 212 under the action of the centrifugal force. The gathering groove 25 is set on the inner wall to allow the sediment to enter the gathering groove 25 under the action of the centrifugal force.

[0042] The heat medium pipe is connected with an online turbidity detector, and the heat medium pipe is provided with a flow meter. The online turbidity detector is used to detect the turbidity of the liquid in the heat medium pipe, and the flow meter is used to detect the flow in the heat medium pipe and monitor whether the heat medium pipe is blocked.

[0043] The filter component 2 is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element. Since the precipitate is a crystal of sodium nitrate, and sodium nitrate is soluble in water and its solubility increases with increasing temperature, when cleaning the filter component 2, hot water can be used to flush the filter component 2 to dissolve the sodium nitrate crystals in water again, and then the filter component 2 is discharged, and the cleaning is convenient and quick.

[0044] The heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter component 2. If there is no stop valve, it is necessary to wait until the heat exchanger is idle before cleaning the filter component 2. The stop valve is set, and the stop valve can be closed when cleaning the filter component 2. Whether the filter component 2 is disassembled or directly cleaned with hot water, after the stop valve is closed, hot water is passed to clean the filter component 2. The cleaning waste water can only flow out along the liquid outlet 213 and cannot affect other places. The setting of the stop valve allows the filter component 2 to be cleaned at any time when the heat exchanger is in use.

[0045] After the wastewater containing sodium nitrate passes into the heat medium pipe, it exchanges heat with the cold medium. In the later stage of heat exchange, as the temperature decreases, sodium nitrate crystals gradually precipitate. At this time, the wastewater flows through the filter component 2 and enters the valve cavity through the liquid inlet 211. Under the rotation of the filter element 22, part of the crystals are adsorbed by the honeycomb structure of the filter element 22, and part of the crystals enter the gathering tank 25 under the action of centrifugal force. The flow rate is accelerated under the rotation of the filter element 22, thereby improving the heat exchange efficiency.

[0046] Example 2

[0047] like Figure 4 As shown, a heat exchanger capable of gathering medium precipitates comprises a shell 1, wherein a cavity is provided in the shell 1, a heat medium tube is arranged in the shell 1, the heat medium tube comprises a liquid inlet 11 and a liquid outlet 12, the liquid outlet 12 has a filter assembly 2, the filter assembly 2 is used for filtering the precipitates in the gathering tube, a plurality of heat medium tubes are combined into a heat medium tube group, a sealing structure is provided at the connection between the heat medium tube group and the shell 1, a baffle is provided between the heat medium tube group and the inner wall of the shell 1, and a refrigerant channel is formed between the baffle and the inner wall of the shell 1.

[0048] The filter assembly 2 includes a valve body 21, which is connected to the heat medium pipe. The valve body 21 is provided with a valve cavity connected to the heat medium pipe. A filter element is provided in the valve cavity. The filter element includes a filter element 22. The filter element 22 is connected to a driving element 23. The driving element 23 drives the filter element 22 to rotate. The rotation direction of the filter element 22 conforms to the flow direction of the liquid. When the liquid with sediment flows through the filter assembly 2, the driving element 23 drives the filter element 22 to rotate. The filter element 22 adsorbs the crystallized sediment in the filter element 22. At the same time, the rotation of the filter element 22 can provide assistance to the flow of the liquid to accelerate the flow of the liquid and prevent the accumulation of sediment to slow down the flow rate. The filter assembly 2 is detachably connected to the heat medium pipe. After a period of use, the filter assembly 2 can be disassembled to clean the internal sediment.

[0049] A flange 24 is provided on the valve body 21 , the valve body 21 is flange-connected to the heat medium pipe, and a sealing gasket is provided between the valve body 21 and the heat medium pipe.

[0050] The filter element 22 is configured as a honeycomb structure, and the filter element 22 is provided with a plurality of blades 221 distributed in a circular array. The filter element 22 can be configured as a honeycomb structure with a plurality of blades 221, which helps to accommodate more precipitation, and the rotational force generated when rotating is greater, which helps to increase the liquid flow rate.

[0051] The valve cavity includes a liquid inlet 211 , a rotating part 212 and a liquid outlet 213 . The angle between the liquid inlet 211 and the heat medium pipe is 90°. The rotating part 212 has a filter element 22 . The bending direction of the elbow is opposite to that of the filter element 22 .

[0052] The angle between the liquid inlet 211 and the heat medium pipe ensures that each time the liquid enters the rotating part 212, it forms an angle with the inner wall of the blade 221 of the filter element 22, which will increase the contact area between the filter element 22 and the liquid. The increase in the contact area between the filter element 22 and the liquid can make more precipitation adsorbed in the filter element 22, and the filter element 22 can also drive more liquid flow.

[0053] A gathering groove 25 is provided on the inner wall of at least one side of the rotating part 212. The gathering groove 25 is arranged around the filter element 22 and connected to the inner wall of the rotating part 212. The opening of the gathering groove 25 is on the same plane as the inner wall of the rotating part 212. The rotation of the filter element 22 will cause the surrounding liquid to rotate along with it. At this time, a certain centrifugal force will be generated. Part of the sediment will be adsorbed in the filter element 22, and part of the sediment will adhere to the inner wall of the rotating part 212 under the action of the centrifugal force. The gathering groove 25 is set on the inner wall to allow the sediment to enter the gathering groove 25 under the action of the centrifugal force.

[0054] The heat medium pipe is connected with an online turbidity detector, and the heat medium pipe is provided with a flow meter. The online turbidity detector is used to detect the turbidity of the liquid in the heat medium pipe, and the flow meter is used to detect the flow in the heat medium pipe and monitor whether the heat medium pipe is blocked.

[0055] The filter component 2 is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element. Since the precipitate is a crystal of sodium nitrate, and sodium nitrate is soluble in water and its solubility increases with increasing temperature, when cleaning the filter component 2, hot water can be used to flush the filter component 2 to dissolve the sodium nitrate crystals in water again, and then the filter component 2 is discharged, and the cleaning is convenient and quick.

[0056] The heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter component 2. If there is no stop valve, it is necessary to wait until the heat exchanger is idle before cleaning the filter component 2. The stop valve is set, and the stop valve can be closed when cleaning the filter component 2. Whether the filter component 2 is disassembled or directly cleaned with hot water, after the stop valve is closed, hot water is passed to clean the filter component 2. The cleaning waste water can only flow out along the liquid outlet 213 and cannot affect other places. The setting of the stop valve allows the filter component 2 to be cleaned at any time when the heat exchanger is in use.

[0057] Example 3

[0058] like Figure 5 As shown, a heat exchanger capable of gathering medium precipitates comprises a shell 1, wherein a cavity is provided in the shell 1, a heat medium tube is arranged in the shell 1, the heat medium tube comprises a liquid inlet 11 and a liquid outlet 12, the liquid outlet 12 has a filter assembly 2, the filter assembly 2 is used for filtering the precipitates in the gathering tube, a plurality of heat medium tubes are combined into a heat medium tube group, a sealing structure is provided at the connection between the heat medium tube group and the shell 1, a baffle is provided between the heat medium tube group and the inner wall of the shell 1, and a refrigerant channel is formed between the baffle and the inner wall of the shell 1.

[0059] The filter assembly 2 includes a valve body 21, which is connected to the heat medium pipe. The valve body 21 is provided with a valve cavity connected to the heat medium pipe. A filter element is provided in the valve cavity. The filter element includes a filter element 22. The filter element 22 is connected to a driving element 23. The driving element 23 drives the filter element 22 to rotate. The rotation direction of the filter element 22 conforms to the flow direction of the liquid. When the liquid with sediment flows through the filter assembly 2, the driving element 23 drives the filter element 22 to rotate. The filter element 22 adsorbs the crystallized sediment in the filter element 22. At the same time, the rotation of the filter element 22 can provide assistance to the flow of the liquid to accelerate the flow of the liquid and prevent the accumulation of sediment to slow down the flow rate. The filter assembly 2 is detachably connected to the heat medium pipe. After a period of use, the filter assembly 2 can be disassembled to clean the internal sediment.

[0060] A flange 24 is provided on the valve body 21 , the valve body 21 is flange-connected to the heat medium pipe, and a sealing gasket is provided between the valve body 21 and the heat medium pipe.

[0061] The filter element 22 is configured as a honeycomb structure, and the filter element 22 is provided with a plurality of blades 221 distributed in a circular array. The filter element 22 can be configured as a honeycomb structure with a plurality of blades 221, which helps to accommodate more precipitation, and the rotational force generated when rotating is greater, which helps to increase the liquid flow rate.

[0062] The valve cavity includes a liquid inlet 211 , a rotating part 212 and a liquid outlet 213 . The angle between the liquid inlet 211 and the heat medium pipe is 120°. The rotating part 212 has a filter element 22 . The bending direction of the elbow is opposite to that of the filter element 22 .

[0063] The angle between the liquid inlet 211 and the heat medium pipe ensures that each time the liquid enters the rotating part 212, it forms an angle with the inner wall of the blade 221 of the filter element 22, which will increase the contact area between the filter element 22 and the liquid. The increase in the contact area between the filter element 22 and the liquid can make more precipitation adsorbed in the filter element 22, and the filter element 22 can also drive more liquid flow.

[0064] A gathering groove 25 is provided on the inner wall of at least one side of the rotating part 212. The gathering groove 25 is arranged around the filter element 22 and connected to the inner wall of the rotating part 212. The opening of the gathering groove 25 is on the same plane as the inner wall of the rotating part 212. The rotation of the filter element 22 will cause the surrounding liquid to rotate along with it. At this time, a certain centrifugal force will be generated. Part of the sediment will be adsorbed in the filter element 22, and part of the sediment will adhere to the inner wall of the rotating part 212 under the action of the centrifugal force. The gathering groove 25 is set on the inner wall to allow the sediment to enter the gathering groove 25 under the action of the centrifugal force.

[0065] The heat medium pipe is connected with an online turbidity detector, and the heat medium pipe is provided with a flow meter. The online turbidity detector is used to detect the turbidity of the liquid in the heat medium pipe, and the flow meter is used to detect the flow in the heat medium pipe and monitor whether the heat medium pipe is blocked.

[0066] The filter component 2 is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element. Since the precipitate is a crystal of sodium nitrate, and sodium nitrate is soluble in water and its solubility increases with increasing temperature, when cleaning the filter component 2, hot water can be used to flush the filter component 2 to dissolve the sodium nitrate crystals in water again, and then the filter component 2 is discharged, and the cleaning is convenient and quick.

[0067] The heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter component 2. If there is no stop valve, it is necessary to wait until the heat exchanger is idle before cleaning the filter component 2. The stop valve is set, and the stop valve can be closed when cleaning the filter component 2. Whether the filter component 2 is disassembled or directly cleaned with hot water, after the stop valve is closed, hot water is passed to clean the filter component 2. The cleaning waste water can only flow out along the liquid outlet 213 and cannot affect other places. The setting of the stop valve allows the filter component 2 to be cleaned at any time when the heat exchanger is in use.

[0068] Example 4

[0069] like Figure 6 As shown, a heat exchanger capable of gathering medium precipitates comprises a shell 1, wherein a cavity is provided in the shell 1, a heat medium tube is arranged in the shell 1, the heat medium tube comprises a liquid inlet 11 and a liquid outlet 12, the liquid outlet 12 has a filter assembly 2, the filter assembly 2 is used for filtering the precipitates in the gathering tube, a plurality of heat medium tubes are combined into a heat medium tube group, a sealing structure is provided at the connection between the heat medium tube group and the shell 1, a baffle is provided between the heat medium tube group and the inner wall of the shell 1, and a refrigerant channel is formed between the baffle and the inner wall of the shell 1.

[0070] The filter assembly 2 includes a valve body 21, which is connected to the heat medium pipe. The valve body 21 is provided with a valve cavity connected to the heat medium pipe. A filter element is provided in the valve cavity. The filter element includes a filter element 22. The filter element 22 is connected to a driving element 23. The driving element 23 drives the filter element 22 to rotate. The rotation direction of the filter element 22 conforms to the flow direction of the liquid. When the liquid with sediment flows through the filter assembly 2, the driving element 23 drives the filter element 22 to rotate. The filter element 22 adsorbs the crystallized sediment in the filter element 22. At the same time, the rotation of the filter element 22 can provide assistance to the flow of the liquid to accelerate the flow of the liquid and prevent the accumulation of sediment to slow down the flow rate. The filter assembly 2 is detachably connected to the heat medium pipe. After a period of use, the filter assembly 2 can be disassembled to clean the internal sediment.

[0071] A flange 24 is provided on the valve body 21 , the valve body 21 is flange-connected to the heat medium pipe, and a sealing gasket is provided between the valve body 21 and the heat medium pipe.

[0072] The filter element 22 is configured as a honeycomb structure, and the filter element 22 is provided with a plurality of blades 221 distributed in a circular array. The filter element 22 can be configured as a honeycomb structure with a plurality of blades 221, which helps to accommodate more precipitation, and the rotational force generated when rotating is greater, which helps to increase the liquid flow rate.

[0073] The valve cavity includes a liquid inlet 211 , a rotating part 212 and a liquid outlet 213 . The angle between the liquid inlet 211 and the heat medium pipe is 90°. The rotating part 212 has a filter element 22 . The bending direction of the elbow is opposite to that of the filter element 22 .

[0074] The angle between the liquid inlet 211 and the heat medium pipe ensures that each time the liquid enters the rotating part 212, it forms an angle with the inner wall of the blade 221 of the filter element 22, which will increase the contact area between the filter element 22 and the liquid. The increase in the contact area between the filter element 22 and the liquid can make more precipitation adsorbed in the filter element 22, and the filter element 22 can also drive more liquid flow.

[0075] A gathering groove 25 is provided on the inner wall of at least one side of the rotating part 212. The gathering groove 25 is arranged around the filter element 22 and connected to the inner wall of the rotating part 212. The opening of the gathering groove 25 is on the same plane as the inner wall of the rotating part 212. The rotation of the filter element 22 will cause the surrounding liquid to rotate along with it. At this time, a certain centrifugal force will be generated. Part of the sediment will be adsorbed in the filter element 22, and part of the sediment will adhere to the inner wall of the rotating part 212 under the action of the centrifugal force. The gathering groove 25 is set on the inner wall to allow the sediment to enter the gathering groove 25 under the action of the centrifugal force.

[0076] A first valve chamber and a second valve chamber are arranged side by side in the valve body 21, the first valve chamber includes a first liquid inlet portion 2111, a first rotating portion 2121, and a first liquid outlet portion 2131; the second valve chamber includes a second liquid inlet portion 2112, a second rotating portion 2122, and a second liquid outlet portion 2132. A first filter element is arranged in the first valve chamber, and a second filter element is arranged in the second valve chamber. The first filter element includes a first drive motor and a first filter element 221, and the second filter element includes a second drive motor and a second filter element 222. The first filter element and the second filter element work simultaneously to increase the filtering efficiency.

[0077] The heat medium pipe is connected with an online turbidity detector, and the heat medium pipe is provided with a flow meter. The online turbidity detector is used to detect the turbidity of the liquid in the heat medium pipe, and the flow meter is used to detect the flow in the heat medium pipe and monitor whether the heat medium pipe is blocked.

[0078] The filter component 2 is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element. Since the precipitate is a crystal of sodium nitrate, and sodium nitrate is soluble in water and its solubility increases with increasing temperature, when cleaning the filter component 2, hot water can be used to flush the filter component 2 to dissolve the sodium nitrate crystals in water again, and then the filter component 2 is discharged, and the cleaning is convenient and quick.

[0079] The heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter component 2. If there is no stop valve, it is necessary to wait until the heat exchanger is idle before cleaning the filter component 2. The stop valve is set, and the stop valve can be closed when cleaning the filter component 2. Whether the filter component 2 is disassembled or directly cleaned with hot water, after the stop valve is closed, hot water is passed to clean the filter component 2. The cleaning waste water can only flow out along the liquid outlet 213 and cannot affect other places. The setting of the stop valve allows the filter component 2 to be cleaned at any time when the heat exchanger is in use.

[0080] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0081] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0082] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger capable of gathering medium precipitates, comprising a shell, wherein a cavity is provided in the shell, wherein: A heat medium tube is arranged in the shell, and the heat medium tube includes a liquid inlet and a liquid outlet. The liquid outlet has a filter assembly, and the filter assembly is used to filter the precipitation in the aggregation tube. A plurality of the heat medium tubes are combined into a heat medium tube group. A sealing structure is arranged at the connection between the heat medium tube group and the shell. A baffle is arranged between the heat medium tube group and the inner wall of the shell, and a refrigerant channel is formed between the baffle and the inner wall of the shell.

2. A heat exchanger capable of agglomerating medium precipitates according to claim 1, characterized in that: The filter assembly includes a valve body, which is connected to the heat medium pipe. The valve body is provided with a valve cavity connected to the heat medium pipe. A filter is provided in the valve cavity. The filter includes a filter element. The filter element is connected to a driving element, and the driving element drives the filter element to rotate.

3. A heat exchanger capable of agglomerating medium precipitates according to claim 2, characterized in that: The filter element is arranged as a honeycomb structure, and the filter element is provided with a plurality of blades distributed in a circumferential array.

4. A heat exchanger capable of agglomerating medium precipitates according to claim 3, characterized in that: The valve cavity comprises a liquid inlet, a rotating part and a liquid outlet, the angle between the liquid inlet and the heat medium pipe is 60°-120°, the rotating part has the filter element, and the bending direction of the curved pipe part is opposite to the bending direction of the filter element.

5. A heat exchanger capable of agglomerating medium precipitates according to claim 4, characterized in that: A gathering groove is arranged on the inner wall of at least one side of the rotating part.

6. A heat exchanger capable of agglomerating medium precipitates according to claim 2, characterized in that: A first valve cavity and a second valve cavity are arranged side by side in the valve body, a first filter element is arranged in the first valve cavity, and a second filter element is arranged in the second valve cavity.

7. A heat exchanger capable of agglomerating medium precipitates according to claim 2, characterized in that: The valve body comprises a left valve body half and a right valve body half, the left valve body half is hinged to the right valve body half, and a sealing member is arranged between the left valve body half and the right valve body half.

8. A heat exchanger capable of agglomerating medium precipitates according to claim 1, characterized in that: The heat medium pipe is connected with an online turbidity detector and is provided with a flow meter.

9. A heat exchanger capable of agglomerating medium precipitates according to claim 1, characterized in that: The filter assembly is provided with a flushing port, the flushing port is connected to a flushing pipe, and the flushing pipe is connected to a heating element.

10. A heat exchanger capable of agglomerating medium precipitates according to claim 1, characterized in that: The heat medium pipe is provided with a stop valve, and the stop valve is located upstream of the filter assembly.

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