A heat exchange system with dehumidification function

Abstract

The present invention discloses a heat exchange system with dehumidification function, including a fresh air channel and a return air channel with bifurcated settings, a sensible heat exchanger and a total heat exchanger are respectively arranged in one-to-one correspondence with the two groups of bifurcated channels, and are respectively used for sensible heat exchange and total heat exchange; an electric air valve is arranged at the bifurcation position of the fresh air channel and the return air channel, and is used to select the corresponding fresh air channel or return air channel, and then select the heat exchange mode; two fans are respectively arranged in the return air channel and the fresh air channel, and the temperature sensor and the humidity sensor are used to detect the indoor and outdoor temperature parameters and humidity parameters; the controller is respectively connected to the electric control device, and is used to instruct the electric air valve to select a heat exchange mode and start the two fans after obtaining and processing the indoor and outdoor temperature parameters and humidity parameters, and start the indoor heat exchange work. Through the above device, the heat exchange system has the functions of both the sensible heat exchanger and the total heat exchanger, taking into account the temperature and humidity of the indoor gas, and creating a livable environment.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular to a heat exchange system with a dehumidification function. Background Art

[0002] With the development of science and technology and the improvement of living standards, people have higher and higher requirements for living environment, especially indoor comfort, which is specifically reflected in the requirements for indoor air quality, indoor temperature and indoor humidity. More and more families use fresh air systems to improve indoor air quality. New energy-saving buildings save energy consumption to the maximum extent on the basis of meeting people's requirements for air quality. Therefore, a heat exchange system is added to the fresh air system to reduce energy loss during fresh air ventilation and achieve the goal of energy saving.

[0003] The core of the heat exchange system is the heat exchanger, which is also called a heat exchanger or heat exchange equipment. It is a device used to transfer heat from a hot fluid to a cold fluid to meet the specified process requirements. It is an industrial application of convective heat transfer and heat conduction. In home applications, it is mainly used for fresh air heat exchange. The heat exchange systems currently used are mainly divided into total heat exchangers and sensible heat exchangers. Among them, the sensible heat exchanger only exchanges heat but not water, while the total heat exchanger exchanges both heat and water. The total heat exchanger is currently more commonly used.

[0004] In order to achieve high efficiency and energy saving, the new energy-saving buildings have very good airtightness. The indoor humidity will gradually increase with human activities. At this time, the separate full heat exchanger fresh air system cannot discharge the indoor moisture to the outside in time, and thus cannot make the indoor temperature and humidity reach a comfortable state. This phenomenon has attracted our great attention and is also an important problem that needs to be solved at present.

[0005] Therefore, in view of the above shortcomings, the present invention urgently needs to provide a heat exchange system with a dehumidification function. Summary of the invention

[0006] The object of the present invention is to provide a heat exchange system with a dehumidification function to solve the problem that the heat exchange system in the prior art cannot achieve indoor temperature and humidity balance.

[0007] The present invention provides the following scheme:

[0008] A heat exchange system with a dehumidification function, comprising: a return air channel and a fresh air channel, the return air channel bifurcated into a first return air channel and a second return air channel, the fresh air channel bifurcated into a first fresh air channel and a second fresh air channel, the first fresh air channel and the second fresh air channel correspond to the first return air channel and the second return air channel one by one, a total heat exchanger is provided in the first fresh air channel for performing a total heat exchange with the first return air channel, a sensible heat exchanger is provided in the second fresh air channel for performing a sensible heat exchange with the second return air channel; an electric air valve, the electric air valve is provided at a bifurcated position of the fresh air channel and the return air channel, and is used to select the first return air channel or the second return air channel and the a fresh air channel corresponding to the first return air channel or the second return air channel; two fans, the two fans are respectively arranged corresponding to the fresh air channel and the return air channel; two temperature sensors and two humidity sensors, one group of the temperature sensor and the humidity sensor are arranged indoors, and one group of the temperature sensor and the humidity sensor are arranged outdoors, for respectively detecting indoor and outdoor temperature parameters and humidity parameters; a controller, the controller is electrically connected to the temperature sensor, the humidity sensor, the fan and the first electric air valve respectively; the controller instructs the first electric air valve to select a sensible heat exchange channel or a total heat exchange channel according to the temperature parameter and the humidity parameter, and controls the operation of the fan.

[0009] The heat exchange system with dehumidification function as described above is further preferably provided with a straight exhaust channel in the return air channel, and a straight inlet channel is provided on the fresh air channel, the straight exhaust channel is connected to the first return air channel and the second return air channel at a fork, and the straight inlet channel is connected to the first fresh air channel and the second fresh air channel at a fork.

[0010] The heat exchange system with dehumidification function as described above is further preferably further provided with two carbon dioxide content detection sensors, which are respectively arranged indoors and outdoors and electrically connected to the controller for respectively detecting indoor and outdoor carbon dioxide content parameters and sending them to the controller.

[0011] The heat exchange system with dehumidification function as described above is further preferably further provided with two PM2.5 detection sensors, which are respectively arranged indoors and outdoors and electrically connected to the controller for respectively detecting indoor and outdoor inhalable particulate matter content parameters and uploading them to the controller.

[0012] As described above, the heat exchange system with dehumidification function is further preferably provided with a filter in the fresh air passage, and the filter is detachably installed in the fresh air passage to filter impurities in the fresh air gas.

[0013] The heat exchange system with dehumidification function as described above is further preferably configured such that the other ends of the first fresh air channel and the second fresh air channel are merged, and the other ends of the first return air channel and the second return air channel are merged.

[0014] The heat exchange system with dehumidification function as described above is further preferably further provided with a shell, which is located at the bifurcation of the fresh air channel and the return air channel and is arranged outside the electric air valve, the two fans and the controller to provide support.

[0015] The heat exchange system with dehumidification function as described above is further preferably provided with a vinyl foam material layer and a sealing material layer on the inner side of the shell to reduce noise.

[0016] As described above, the heat exchange system with dehumidification function is further preferably configured such that the controller further includes a communication module for connecting to an external computer platform via the communication module.

[0017] The heat exchange system with dehumidification function as described above is further preferably provided with a mosquito-proof net in the fresh air passage to prevent mosquitoes from entering.

[0018] The present invention discloses a heat exchange system with dehumidification function, including a fresh air channel and a return air channel, two fans, a sensible heat exchanger, a total heat exchanger, a temperature sensor, a humidity sensor and a controller. The fresh air channel and the return air channel are both bifurcated. The sensible heat exchanger and the total heat exchanger are respectively arranged in one-to-one correspondence with the two groups of bifurcated channels, and are respectively used for sensible heat exchange and total heat exchange; the electric air valve is arranged at the bifurcation position of the fresh air channel and the return air channel, and is used to select the corresponding fresh air channel or return air channel, and then select the heat exchange mode; the two fans are respectively arranged in the return air channel and the fresh air channel, and the temperature sensor and the humidity sensor are used to detect the indoor and outdoor temperature parameters and humidity parameters; the controller is respectively connected to the electric control device, and is used to instruct the electric air valve to select a heat exchange mode and start the two fans after obtaining the indoor and outdoor temperature parameters and humidity parameters, and start the indoor heat exchange work. Through the arrangement of the above device, i.e., the control system, the heat exchange system in this embodiment has the functions of both the sensible heat exchanger and the total heat exchanger, balances the indoor temperature and humidity, and creates a livable environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a heat exchange system with dehumidification function of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a heat exchange system with dehumidification function according to the present invention.

[0021] Description of reference numerals:

[0022] 1-fresh air duct, 2-return air duct, 3-electric air valve, 4-sensible heat exchanger, 5-total heat exchanger, 6-first return air duct, 7-first fresh air duct, 8-direct inlet duct, 9-direct exhaust duct, 10-second return air duct, 11-second fresh air duct, 12-casing. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] like Figure 1-2As shown, the present embodiment discloses a heat exchange system with a dehumidification function, a return air channel 2 and a fresh air channel 1, an electric air valve 3, two fans, two temperature sensors and two humidity sensors, and a controller, wherein the return air channel 2 is bifurcated into a first return air channel 6 and a second return air channel 10, and correspondingly, the fresh air channel 1 is bifurcated into a first fresh air channel 7 and a second fresh air channel 11, and the first fresh air channel 7 and the second fresh air channel 11 correspond to the first return air channel 6 and the second return air channel 10 one by one, and one fresh air channel 1 and one return air channel 2 constitute a group of heat exchange channels, and there are two groups in the present embodiment, two groups The fresh air channel 1 of the heat exchange channel is provided with a heat exchanger, wherein the first fresh air channel 7 is provided with a total heat exchanger 5 for full heat exchange with the return air in the first return air channel 6, and the second fresh air channel 11 is provided with a sensible heat exchanger 4 for sensible heat exchange with the return air in the second return air channel 10; the electric air valve 3 is provided at the bifurcation position of the fresh air channel 1 and the return air channel 2, and is used to select the first return air channel 6 or the second return air channel 10 and the fresh air channel 1 corresponding to the first return air channel 6 or the second return air channel 10, for selecting the heat exchange channel, and then selecting the heat exchange mode. Two fans are provided corresponding to the fresh air channel 1 and the return air channel 2, respectively, for providing power for the air flow in the fresh air channel 1 or the return air channel 2; two temperature sensors and two humidity sensors are provided, and one temperature sensor and one humidity sensor are combined into a group, that is, two groups are provided in this embodiment, one group is correspondingly installed indoors, and the other group is correspondingly installed outdoors, for detecting indoor and outdoor temperature parameters and humidity parameters respectively. The controller is electrically connected to the temperature sensor, humidity sensor, fan, electric air valve 3, total heat exchanger 5 and sensible heat exchanger 4 respectively, and instructs the electric air valve 3 to select the sensible heat exchange channel or the total heat exchange channel according to the temperature parameters and humidity parameters, and controls the fan and the corresponding heat exchanger to work. In the above device, the fresh air channel 1 and the return air channel 2 realize the heat exchange of temperature and humidity at the bifurcation position, so the sensible heat exchanger and the total heat exchanger are also arranged in the fresh air channel 1 at the bifurcation position; the electric air valve 3 is equivalent to a one-in and two-out selection switch, which is arranged at the intersection of the return air channel 2 and the fresh air channel 1, and is used to select a corresponding set of heat exchange channels according to the control instructions of the controller. The two sets of temperature sensors and humidity sensors are used to measure the temperature parameters and humidity parameters of the indoor and outdoor areas respectively, so as to assist the controller in determining which specific method is needed for heat exchange, and start the total heat exchanger 5 or the sensible heat exchanger 4 accordingly. Through the arrangement of the above device, the heat exchange system in this embodiment has the functions of both the sensible heat exchanger 4 and the total heat exchanger 5, taking into account the temperature and humidity control of the indoor gas, and creating a livable environment.

[0026] Further, such as Figure 1-2As shown, in the heat exchange system with dehumidification function disclosed in this embodiment, a direct discharge channel 9 is also provided in the return air channel 2, and a direct inlet channel 8 is provided on the fresh air channel 1. The direct discharge channel 9 is connected to the first return air channel 6 and the second return air channel 10 at the bifurcation, and the direct inlet channel 8 is connected to the first fresh air channel 7 and the second fresh air channel 11 at the bifurcation. The direct inlet channel 8 and the direct discharge channel 9 are respectively used for direct entry of fresh air or direct discharge of return air, and direct entry and direct discharge do not require heat exchange. In this embodiment, the direct discharge channel 9 in the fresh air channel 1 or the return air channel 2 is connected at the bifurcation, and the channel is switched by the electric air valve 3. At this time, the electric air valve 3 is a one-inlet and three-place selection switch. Due to the heat exchange function setting of sensible heat exchange and full heat exchange, in order to improve its heat exchange efficiency, the fan power is correspondingly reduced, and the indoor air renewal efficiency is low, which is not suitable for an environment requiring emergency ventilation. For this reason, in this embodiment, a direct discharge channel 9 and a direct inlet channel 8 are added for direct discharge of indoor gas to accelerate the renewal of indoor gas.

[0027] In the heat exchange system with dehumidification function disclosed in this embodiment, in late autumn, winter and early spring, when the indoor temperature is higher than the outdoor temperature, the outdoor humidity is low and the indoor humidity is greater than 60%, in order to reduce the indoor humidity and prevent the indoor heat from being lost, the controller instructs the electric air valve 3 to open the second fresh air channel 11 and the second return air channel 10, that is, to open the sensible heat exchange channel, open the sensible heat exchanger 4, and discharge the indoor high-humidity air and send the outdoor low-humidity air into the room; when the indoor temperature is higher than the outdoor temperature, the outdoor humidity is low, and the indoor humidity is less than 60%, the controller instructs the electric air valve to select the first fresh air channel 7 and the first return air channel 6, that is, to open the full heat exchange channel, open the full heat exchanger 5 for dehumidification, and reduce the loss of indoor heat and moisture. In early autumn and late spring, when the temperature difference between indoor and outdoor is not large and the indoor and outdoor humidity is ≤60%, the electric air valve 3 is instructed to select the direct exhaust channel 9 for direct exhaust ventilation. The present invention does not involve summer dehumidification. The above temperature parameters and humidity parameters are used to assist the controller in making judgments and then selecting the appropriate heat exchange method to adjust the indoor environment to the optimal temperature and humidity. Such settings are used to maintain the optimal indoor environment and make it suitable for human activities.

[0028] In the heat exchange system with dehumidification function disclosed in this embodiment, two carbon dioxide content detection sensors are also included. The two carbon dioxide content detection sensors are respectively arranged indoors and outdoors, and are electrically connected to the controller for detecting the carbon dioxide content parameters indoors and outdoors and sending them to the controller. Further, two PM2.5 detection sensors are also included. The two PM2.5 detection sensors are also respectively arranged indoors and outdoors, and are electrically connected to the controller for detecting the inhalable particulate matter content parameters indoors and outdoors and uploading them to the controller. In a closed environment, the indoor carbon dioxide content increases due to breathing, making people irritable, stuffy, and difficult to concentrate, and then their reactions become slow. By monitoring the carbon dioxide content, it is known by comparison whether the carbon dioxide exceeds the standard, and then the heat exchange system is turned on in time to reduce the indoor carbon dioxide content, which is beneficial to the physical and mental health of the residents. Similarly, the inhalable particulate matter content is also related to human health, and the setting of the PM2.5 detection sensor also improves the function of the heat exchange system in this embodiment.

[0029] In the heat exchange system with dehumidification function disclosed in this embodiment, a filter is also provided in the fresh air channel 1, which is detachably installed at the air inlet of the fresh air channel 1 to filter impurities in the fresh air gas. In addition, a mosquito net is also installed on the fresh air duct to prevent outdoor mosquitoes from entering the room, thereby protecting the health of indoor personnel.

[0030] In the heat exchange system with dehumidification function disclosed in this embodiment, the other ends of the first fresh air channel 7 and the second fresh air channel 11 are merged, and the other ends of the first return air channel 6 and the second return air channel 10 are merged; further, the straight-in channel 8 in the fresh air channel 1 is also merged with the first fresh air channel 7 and the second fresh air channel 11, and the straight-out channel 9 in the return air channel 2 is also merged with the first return air channel 6 and the second return air channel 10. Furthermore, the outside of the fresh air channel 1 and the return air channel 2 is also wrapped with insulation material for pipe insulation and heat prevention.

[0031] The heat exchange system with dehumidification function disclosed in this embodiment also includes a housing 12, which is located at the bifurcation of the fresh air channel 1 and the return air channel 2, and is arranged outside the electric air valve 3, the two fans and the controller to provide support. Furthermore, a vinyl foam material layer, a sealing material layer or sound insulation cotton is also arranged inside the housing 12 to reduce noise. In addition, a low-noise fan can also be used to reduce noise.

[0032] In the heat exchange system with dehumidification function disclosed in this embodiment, a communication module is also provided in the controller for connecting with an external computer platform through the communication module, and then modifying the parameter settings of the controller through the computer platform or directly remotely controlling it.

[0033] Compared with the prior art, the heat exchange system with dehumidification function disclosed in the present invention has the following beneficial effects:

[0034] 1. In the present invention, by bifurcating the fresh air channel and the return air channel, and arranging the sensible heat exchanger 4 and the total heat exchanger 5 on the bifurcated branches of the bifurcated fresh air channel 1, the heat exchange system has both the total heat exchange function and the sensible heat exchange function, and can balance the indoor temperature and humidity during ventilation;

[0035] 2. In the present invention, through the setting of multiple sensors and controllers, the heat exchange system can realize automatic control and automatically adjust the indoor environment, fundamentally solving the problem of dry house in winter and humid house in summer, achieving significant effects such as heat utilization and energy saving, and allowing the house to achieve a relatively comfortable and healthy environment.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat exchange system with dehumidification function, characterized in that: include: A return air channel and a fresh air channel, the return air channel is bifurcated into a first return air channel and a second return air channel, the fresh air channel is bifurcated into a first fresh air channel and a second fresh air channel, the first fresh air channel and the second fresh air channel correspond to the first return air channel and the second return air channel one by one, a total heat exchanger is provided in the first fresh air channel for performing total heat exchange with the first return air channel, and a sensible heat exchanger is provided in the second fresh air channel for performing sensible heat exchange with the second return air channel; An electric air valve, which is arranged at a bifurcation position between the fresh air channel and the return air channel, and is used to select the first return air channel or the second return air channel and the fresh air channel corresponding to the first return air channel or the second return air channel; Two fans, the two fans are respectively arranged corresponding to the fresh air channel and the return air channel; Two temperature sensors and two humidity sensors, one set of the temperature sensors and the humidity sensors are arranged indoors, and one set of the temperature sensors and the humidity sensors are arranged outdoors, for detecting indoor and outdoor temperature parameters and humidity parameters respectively; A controller, the controller is electrically connected to the temperature sensor, the humidity sensor, the fan and the electric air valve respectively; the controller instructs the electric air valve to select a sensible heat exchange channel or a total heat exchange channel according to the temperature parameter and the humidity parameter, and controls the fan to work; and also includes two carbon dioxide content detection sensors, the two carbon dioxide content detection sensors are respectively arranged indoors and outdoors, and are electrically connected to the controller, and are used to detect the carbon dioxide content parameters indoors and outdoors respectively and send them to the controller; It also includes two PM2.5 detection sensors, which are respectively arranged indoors and outdoors and electrically connected to the controller, and are used to detect the parameters of the inhalable particulate matter content indoors and outdoors and upload them to the controller; the return air channel is also provided with a direct discharge channel, and the fresh air channel is provided with a direct inlet channel, the direct discharge channel is connected to the first return air channel and the second return air channel at a bifurcation, and the direct inlet channel is connected to the first fresh air channel and the second fresh air channel at a bifurcation; The other ends of the first fresh air channel and the second fresh air channel are merged, and the other ends of the first return air channel and the second return air channel are merged.

2. The heat exchange system with dehumidification function according to claim 1, characterized in that: A filter is also provided in the fresh air passage. The filter is detachably installed in the fresh air passage and is used to filter impurities in the fresh air gas.

3. The heat exchange system with dehumidification function according to claim 1 or 2, characterized in that: It also includes a shell, which is located at the bifurcation of the fresh air channel and the return air channel, and is arranged on the outside of the electric air valve, the two fans and the controller to provide support.

4. The heat exchange system with dehumidification function according to claim 3, characterized in that: A vinyl foam material layer and a sealing material layer are also provided on the inner side of the shell to reduce noise.

5. The heat exchange system with dehumidification function according to claim 1, characterized in that: The controller also includes a communication module, which is used to connect to an external computer platform through the communication module.

6. The heat exchange system with dehumidification function according to claim 1, characterized in that: A mosquito net is also provided in the fresh air passage to prevent mosquitoes from entering.

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