CN216522315U - Heat exchange device and refrigeration equipment - Google Patents
Heat exchange device and refrigeration equipment Download PDFInfo
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- CN216522315U CN216522315U CN202123167019.XU CN202123167019U CN216522315U CN 216522315 U CN216522315 U CN 216522315U CN 202123167019 U CN202123167019 U CN 202123167019U CN 216522315 U CN216522315 U CN 216522315U
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Abstract
The present disclosure relates to a heat exchange device and refrigeration plant, wherein, heat exchange device includes: a heat exchanger (1); the first air valve (2) is arranged on one side of the heat exchanger (1) along a first direction (x) and is configured to adjust the air quantity passing through the heat exchanger (1), and the first direction (x) is consistent with the air flow direction; the bypass air duct (3) is arranged on the side of the heat exchanger (1) along a second direction (y), and the second direction (y) is perpendicular to the first direction (x); and a second damper (4) configured to adjust an air volume passing through the bypass duct (3); the heat exchange device has a ventilation mode, and in the ventilation mode, the first air valve (2) is closed, and the second air valve (4) is opened.
Description
Technical Field
The disclosure relates to the technical field of heat exchange, in particular to a heat exchange device and refrigeration equipment.
Background
The unit is when needs refrigeration, and the air supply carries out the heat transfer through the surface cooler, need not use the surface cooler to carry out under the condition of heat transfer in transition season, and the air supply still can be through the surface cooler, and this pressure loss that has increased in the unit, energy-conserving effect is relatively poor, and has increased the required power of motor that is used for driving the fan.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a heat exchange device and refrigeration equipment, which can improve the energy-saving effect of the heat exchange device.
According to a first aspect of the present disclosure, there is provided a heat exchange device comprising:
a heat exchanger;
the first air valve is arranged on one side of the heat exchanger along a first direction and is configured to adjust the air quantity passing through the heat exchanger, and the first direction is consistent with the air flow direction;
the bypass air duct is arranged on the side part of the heat exchanger along a second direction, and the second direction is vertical to the first direction; and
a second air valve configured to adjust an air volume passing through the bypass duct;
the heat exchange device is provided with a ventilation mode, and the first air valve is closed and the second air valve is opened in the ventilation mode.
In some embodiments, the heat exchange device further has a heat exchange mode in which the first damper is open and the second damper is closed.
In some embodiments, the heat exchanger comprises a heat exchange tube comprising a straight tube section extending in a third direction, the third direction being perpendicular to the first and second directions.
In some embodiments, in the third direction, the first damper extends along the entire length of the heat exchanger, and/or the bypass duct and the second damper each extend along the entire length of the heat exchanger.
In some embodiments, the heat exchanger comprises a plurality of heat exchangers arranged at intervals along the second direction, each heat exchanger is correspondingly provided with a first air valve, and a bypass air duct is arranged between every two adjacent heat exchangers.
In some embodiments, in the vent mode, all of the first dampers are closed and all of the second dampers are open.
In some embodiments, the heat exchanger includes a liquid inlet pipe and a heat exchange pipe, the liquid inlet pipe is selectively fed with a liquid refrigerant at a first temperature or a second temperature, and the first temperature is higher than the second temperature.
In some embodiments, the heat exchange device further has a heat exchange mode, the heat exchange mode comprises an energy-saving refrigeration mode;
the heat exchange device further comprises a controller, wherein the controller is configured to enable the heat exchange device to be in an energy-saving refrigeration mode under the condition that the required refrigeration capacity is not larger than first preset refrigeration capacity, and only a first air valve corresponding to one heat exchanger is opened and liquid refrigerant at first temperature is introduced; the first preset refrigerating capacity is the maximum refrigerating capacity when the heat exchanger is filled with the liquid refrigerant with the first temperature.
In some embodiments, the number of the heat exchangers is multiple, and the heat exchange device further has a heat exchange mode, wherein the heat exchange mode comprises an energy-saving refrigeration mode;
the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in an energy-saving refrigeration mode under the condition that the required cold quantity is larger than the first preset cold quantity and smaller than the second preset cold quantity, the number of the heat exchangers in the working state and the opening degree of the first air valve are adjusted, and the heat exchangers in the working state are filled with liquid refrigerants at the first temperature, so that the actual cold quantity meets the required cold quantity; the first preset cold quantity is the maximum refrigerating capacity when the heat exchanger is introduced with the liquid refrigerant at the first temperature, and the second preset cold quantity is larger than the first preset cold quantity.
In some embodiments, the number of the heat exchangers is multiple, and the heat exchange device further has a heat exchange mode, wherein the heat exchange mode comprises a performance refrigeration mode;
the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in a performance refrigeration mode under the condition that the required refrigeration capacity is not less than second preset refrigeration capacity, the number of the heat exchangers in the working state and the opening degree of the first air valve are adjusted, and the heat exchangers in the working state are introduced with liquid refrigerants at second temperature, so that the actual refrigeration capacity meets the required refrigeration capacity; the second preset refrigerating capacity is larger than the maximum refrigerating capacity of the heat exchanger when the liquid refrigerant with the first temperature is introduced.
According to a second aspect of the present disclosure, there is provided a refrigeration apparatus including the heat exchange device of the above embodiment.
In some embodiments, the refrigeration appliance is a wind cabinet.
The heat exchange device of the embodiment of the disclosure, through setting up the bypass wind channel at the lateral part of heat exchanger, and the bypass wind channel is equipped with the second air valve, under the ventilation mode, make first air valve close and the second air valve is opened, the air current directly passes through from the bypass wind channel with less resistance through not passing through the heat exchanger, can reduce the operation energy consumption of fan, improves energy-conserving effect, the ventilation mode is fit for using under the condition that need not use the heat exchanger to carry out the heat transfer in transition season.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
fig. 1 is a schematic structural view of some embodiments of the heat exchange device of the present disclosure.
Fig. 2 is a front view of some embodiments of the heat exchange device of the present disclosure.
FIG. 3 is a side view of some embodiments of the heat exchange device of the present disclosure.
Fig. 4 is a schematic flow diagram of some embodiments of a heat exchange device control method of the present disclosure.
Description of reference numerals:
1. a heat exchanger; 11. a heat exchange tube; 111. a straight pipe section; 112. bending the pipe section; 12. a liquid inlet pipe; 13. a liquid outlet pipe; 14. a connecting pipe; 2. a first air valve; 3. a bypass air duct; 4. a second air valve; x, a first direction; y, a second direction; z, third direction.
Detailed Description
The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.
The terms "first", "second", and the like in the present disclosure are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.
In addition, when an element is referred to as being "on" another element, it can be directly on the other element or be indirectly on the other element with one or more intervening elements interposed therebetween. In addition, when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element with one or more intervening elements interposed therebetween. Hereinafter, like reference numerals denote like elements.
The description of the relative orientations and positional relationships of the indications "upper," "lower," "top," "bottom," "front," "back," "inner" and "outer" and the like are used in this disclosure for convenience in describing the disclosure, and do not indicate or imply that the indicated devices must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the disclosure.
As shown in fig. 1-3, the present disclosure provides a heat exchange device, in some embodiments, comprising: the heat exchanger 1, the first air valve 2, the bypass air duct 3 and the second air valve 4.
The heat exchanger 1 can be a surface air cooler, the heat exchanger 1 is provided with a heat exchange tube 11, a liquid inlet tube 12 and a liquid outlet tube 13, the liquid inlet tube 12 is communicated with one end of the heat exchange tube 11 and is configured to enable introduced liquid refrigerants to enter the heat exchange tube 11 to exchange heat with gas flowing through the surface air cooler, and the liquid refrigerants after heat exchange flow out of the liquid outlet tube 13. A connection pipe 14 may be provided between the liquid inlet pipe 12 and the liquid outlet pipe 13 to improve the installation reliability of the liquid inlet pipe 12 and the liquid outlet pipe 13. The heat exchange can be refrigeration or heating.
The first damper 2 is disposed at one side of the heat exchanger 1 along a first direction x configured to adjust an amount of air passing through the heat exchanger 1, the first direction x coinciding with an airflow direction. For example, the first damper 2 is provided with a plurality of blades, and the size of the airflow passage is adjusted by the rotation of the blades to change the amount of air passing through the heat exchanger 1. First blast gate 2 and heat exchanger 1 can all design for the cuboid structure, and in the plane of perpendicular to first direction x, first blast gate 2 and heat exchanger 1's size can be the same to make the air current from each region of heat exchanger 1 evenly through carrying out the heat transfer, improve the heat transfer effect.
The bypass air duct 3 is disposed at a side portion of the heat exchanger 1 along a second direction y, which is perpendicular to the first direction x. For example, the dimension of the bypass air duct 3 in the first direction x may be uniform and flush with the side of the heat exchanger 1.
The second damper 4 is provided in the bypass duct 3 and configured to regulate the amount of air passing through the bypass duct 3. For example, the second damper 4 is provided with a plurality of blades, and the size of the airflow passage is adjusted by the rotation of the blades to change the amount of air passing through the bypass duct 3.
Wherein the heat exchange device has a ventilation mode in which the first damper 2 is closed to prevent airflow through the heat exchanger 1 and the second damper 4 is open to allow airflow through the bypass duct 3.
The heat exchange device of this embodiment sets up bypass wind channel 3 through the lateral part at heat exchanger 1, and bypass wind channel 3 is equipped with second air valve 4, under the ventilation mode, make first air valve 2 close and second air valve 4 open, the air current does not directly pass through from bypass wind channel 3 with less resistance through heat exchanger 1, need not to pass through the fin in heat exchanger 1, pressure loss when can reducing gas flow, reduce the operation energy consumption of fan, energy-saving effect is improved, the ventilation mode is fit for using under the condition that need not use heat exchanger 1 to carry out the heat transfer in transition season. Moreover, the first air valve 2 and the second air valve 4 are controlled in a combined mode, so that the heat exchange device can conveniently enter a ventilation mode, and the control is easy, and the reliability is high.
In some embodiments, the heat exchange device further has a heat exchange mode, and the heat exchange mode can be a cooling mode or a heating mode; in the heat exchange mode, the first damper 2 is opened to allow the air flow to pass through the heat exchanger 1 for heat exchange, and the second damper 4 is closed to prevent the air flow from passing through the bypass duct 3.
This embodiment can make heat transfer device be in the heat transfer mode through combination control blast gate when needing the heat transfer to satisfy user's refrigeration or heating demand, for example the heat transfer mode is the refrigeration mode in summer, is the mode of heating in winter. The heat exchange device can flexibly switch between a heat exchange mode and a ventilation mode by controlling the first air valve 2 and the second air valve 4, can meet the heat exchange requirement, can reduce the running energy consumption of a fan in a transition season, and achieves the energy-saving effect.
Alternatively, when the unit does not need to work, the first air valve 2 and the second air valve 4 can be closed so as to keep the inside of the unit clean.
In some embodiments, as shown in fig. 1, the heat exchanger 1 comprises a heat exchange tube 11, the heat exchange tube 11 comprising a straight tube section 111, the straight tube section 111 extending in a third direction z, the third direction z being perpendicular to the first direction x and the second direction y. Specifically, the heat exchange tube 11 includes a plurality of straight tube sections 111 and a plurality of bend sections 112, the plurality of straight tube sections 111 being arranged in parallel in the third direction z, and the bend sections 112 being connected to the same end of the two straight tube sections 111.
This embodiment enables the bypass duct 3 to be arranged without affecting the flow of air through the heat exchanger 1 in the heat exchange mode, nor affecting the installation of the heat exchanger 1.
In some embodiments, in the third direction z, the first damper 2 extends along the entire length of the heat exchanger 1, and/or the bypass duct 3 and the second damper 4 each extend along the entire length of the heat exchanger 1.
In this embodiment, the first damper 2 extends along the entire length of the heat exchanger 1, and can increase the air intake range, so that the air flow flows through the heat exchanger 1 more uniformly along the third direction z, and the heat exchange efficiency is improved. The bypass air duct 3 extends along the entire length of the heat exchanger 1, and on the basis of not increasing the overall size of the heat exchange device along the third direction z, the range of the air flow passing through the bypass air duct 3 can be increased, so that the ventilation efficiency can be improved, and the air flow can more uniformly pass through the bypass air duct 3 in the third direction z. The second air valve 4 extends along the whole length of the heat exchanger 1, can increase the air inlet range during ventilation, and enables air flow to uniformly pass through the whole length of the side ventilation channel 3, so that the ventilation effect is more uniform.
In some embodiments, the heat exchange device includes a plurality of heat exchangers 1 arranged at intervals along the second direction y, for example, two or more heat exchangers 1 are arranged, one first air valve 2 is correspondingly arranged on each heat exchanger 1, and a bypass air duct 3 is arranged between every two adjacent heat exchangers 1. For example, a plurality of heat exchangers 1 adopt the concatenation mode to constitute, can dismantle between heat exchanger 1 and the bypass wind channel 3 to in the quantity of the nimble selection heat exchanger 1 of demand, be convenient for the extension.
This embodiment can improve heat transfer ability through setting up a plurality of heat exchangers 1, makes heat transfer device more even along the heat transfer of second direction y, all is equipped with bypass wind channel 3 between per two adjacent heat exchangers 1 moreover, can ventilate simultaneously through a plurality of bypass wind channels 3, not only can improve ventilation efficiency, can also make heat transfer device follow the ventilation of second direction y more even.
With this structure, in the ventilation mode, all the first dampers 2 are closed to prevent the air flow from passing through each heat exchanger 1, reducing power consumption, and all the second dampers 4 are opened to allow the air flow to be ventilated through each bypass duct 3 simultaneously, thereby improving ventilation efficiency and improving uniformity of the air flow when ventilated.
In some embodiments, as shown in fig. 2 and 3, the heat exchanger 1 includes a liquid inlet pipe 12, and the liquid inlet pipe 12 selectively introduces a liquid refrigerant at a first temperature or a second temperature, where the first temperature is higher than the second temperature.
For example, the liquid refrigerant at the first temperature may be medium-temperature water, the inlet water temperature is 9 ℃, the outlet water temperature after heat exchange is 15 ℃, and the maximum refrigerating capacity of the single heat exchanger 1 is 32.2kw under the standard condition of 5000 air volume; the liquid refrigerant at the second temperature can be normal-temperature water, the water inlet temperature is 7 ℃, the water outlet temperature after heat exchange is 12 ℃, and the maximum refrigerating capacity of the single heat exchanger 1 under the standard condition of 5000 air volume is 22.56 kw.
The first temperature and the second temperature can be selected through a manual operator, the temperature range required by a user can be set through the manual operator, and the cold quantity required by the heat exchange device can be acquired according to the temperature range required by the user.
The heat exchange device of the embodiment can selectively introduce liquid refrigerants with different temperatures into the heat exchanger 1, and under the condition that the heat exchange area is certain, different refrigerating capacities can be realized by a single heat exchanger 1, so that the adjusting range of the refrigerating capacity during heat exchange can be increased, the heat exchange requirements of users under different loads in different seasons can be met more flexibly, and the adaptability of the users to requirements in a wider range is improved.
The heat exchange device is particularly suitable for refrigeration, because more condensed water can be generated in the heat exchange process of the heat exchanger 1 during refrigeration to influence the refrigeration efficiency, a liquid refrigerant with a first temperature higher in temperature can be introduced into the heat exchanger when the required cold quantity is smaller, the generation of the condensed water can be reduced by improving the temperature of the liquid refrigerant, the heat exchange efficiency of the heat exchanger 1 is improved, and the energy loss is reduced.
In some embodiments, the heat exchange device further has a heat exchange mode, the heat exchange mode comprises an energy-saving refrigeration mode; the heat exchange device further comprises a controller, wherein the controller is configured to enable the heat exchange device to be in an energy-saving refrigeration mode under the condition that the required refrigeration capacity is not larger than a first preset refrigeration capacity, and only a first air valve 2 corresponding to one heat exchanger 1 is opened and liquid refrigerant at a first temperature is introduced; the first preset refrigeration capacity is the maximum refrigeration capacity when the heat exchanger 1 is filled with the liquid refrigerant with the first temperature. The opening degree of the first air valve 2 can be adjusted according to the temperature set by a user, so that the actual cold quantity meets the cold quantity demand.
According to the embodiment, only one heat exchanger 1 is opened to exchange heat under the condition that the required cold quantity is not larger than the maximum refrigerating capacity which can be achieved by the single heat exchanger 1 when the liquid refrigerant with the first temperature is introduced, and other heat exchangers 1 are in the closed state, so that the requirement on the refrigerating capacity can be met, the energy loss of a heat exchange device can be reduced, and the energy-saving effect is improved.
In some embodiments, the number of the heat exchangers 1 is multiple, and the heat exchange device further has a heat exchange mode, wherein the heat exchange mode comprises an energy-saving refrigeration mode; the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in an energy-saving refrigeration mode under the condition that the required cold quantity is larger than the first preset cold quantity and smaller than the second preset cold quantity, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted, and the heat exchangers 1 in the working state are introduced with liquid refrigerants at the first temperature, so that the actual cold quantity meets the required cold quantity; the first preset cold quantity is the maximum refrigerating capacity of the heat exchanger 1 when the liquid refrigerant with the first temperature is introduced, and the second preset cold quantity is larger than the first preset cold quantity, for example, the second preset cold quantity can be twice as large as the first preset cold quantity.
This embodiment is not more than the biggest refrigerating capacity that single heat exchanger 1 can reach letting in the liquid refrigerant of first temperature at the demand cold volume, and under the demand cold volume is not too big circumstances, it can not satisfy the demand cold volume to open a heat exchanger 1, just can obtain the demand cold volume according to the temperature that the user set up, make the heat exchanger 1 of suitable quantity simultaneously heat transfer in view of the above, and adjust the aperture that each heat exchanger 1 corresponds first blast gate 2 at the heat transfer in-process, can satisfy the demand cold volume, can reduce the energy that heat transfer device consumed again, energy-saving effect is improved. Moreover, the liquid refrigerant with the first temperature is introduced into the heat exchanger 1, so that the cold quantity adjusting range of a user can be met, the generation of condensed water can be reduced, and the heat exchange efficiency is ensured.
In some embodiments, the heat exchangers 1 are provided in plurality, and the heat exchange device further has a heat exchange mode, wherein the heat exchange mode comprises a performance refrigeration mode; the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in a performance refrigeration mode under the condition that the required refrigeration capacity is not less than second preset refrigeration capacity, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted, and the heat exchangers 1 in the working state are introduced with liquid refrigerants at second temperature, so that the actual refrigeration capacity meets the required refrigeration capacity; the second preset refrigerating capacity is larger than the maximum refrigerating capacity of the heat exchanger 1 when the liquid refrigerant with the first temperature is introduced.
In the embodiment, under the condition that the required cold quantity is not more than the maximum refrigerating capacity which can be reached by a single heat exchanger 1 when liquid refrigerant with a first temperature is introduced and the required cold quantity is larger, firstly, the liquid refrigerant with a second temperature lower in temperature is introduced into the heat exchanger 1, so that the single heat exchanger 1 can reach larger refrigerating capacity and the adjustable range of the cold quantity is increased; secondly, can obtain the demand cold volume according to the temperature that the user set up, make the heat exchanger 1 of suitable quantity simultaneously heat transfer in view of the above to adjust the aperture that each heat exchanger 1 corresponds first blast gate 2 in the heat transfer process, can satisfy the demand cold volume, can reduce the energy that heat transfer device consumed again, improve energy-conserving effect.
For example, when the required refrigeration capacity is large, all the first air valves 2 can be opened, and the liquid refrigerant with the second temperature is introduced into all the heat exchangers 1, so as to improve the achievable refrigeration capacity and increase the refrigeration capacity adjusting range.
Secondly, the present disclosure provides a refrigeration apparatus including the above-described embodiments.
The refrigeration equipment at least has the following advantages:
1. under the ventilation mode, can reduce the loss of pressure when gas flows through, reduce the operation energy consumption of fan, improve energy-conserving effect, be fit for using under the condition that need not use heat exchanger 1 to carry out the heat transfer in the transition season. Moreover, the refrigeration equipment can be conveniently switched between a heat exchange mode and a ventilation mode.
2. When the refrigeration equipment is in a refrigeration mode, liquid refrigerants with first temperature or second temperature can be introduced into the heat exchanger 1 according to the required cold quantity, or the number of the heat exchangers 1 in a working state is selected, or the opening degree of each first air valve 2 is adjusted, so that the actual cold quantity meets the required cold quantity, the required cold quantity under the temperature set by a user can be met, the adjustable range of the cold quantity can be enlarged, the energy loss is reduced, and the energy-saving effect is improved.
In some embodiments, the refrigeration device is a wind cabinet. The plurality of heat exchangers 1 may be arranged at intervals in the second direction y, which is a height direction. The structure can ensure that the air cabinet can uniformly exchange heat in each area along the height direction in a heat exchange mode, and the heat exchange efficiency of the air cabinet is improved; and is uniformly ventilated in each region in the height direction in the ventilation mode.
Secondly, this disclosure provides a control method based on the heat exchange device of the above embodiments, in some embodiments, including:
in the ventilation mode, the first damper 2 is closed and the second damper 4 is opened.
In the step, the air valve control command can be sent to the air valve actuator by the controller, and the air valve actuator controls the first air valve 2 and the second air valve 4 to act.
The control method of the embodiment can enable the airflow to directly pass through the bypass air channel 3 with smaller resistance without passing through the heat exchanger 1 in the ventilation mode, the pressure loss of the air flowing through can be reduced without passing through fins in the heat exchanger 1, the operation energy consumption of the fan is reduced, the energy-saving effect is improved, and the ventilation mode is suitable for being used in the transition season without using the heat exchanger 1 for heat exchange. Moreover, the first air valve 2 and the second air valve 4 are controlled in a combined mode, so that the heat exchange device can conveniently enter a ventilation mode, and the heat exchange device is easy to control and high in reliability.
In some embodiments, the heat exchange device further has a heat exchange mode, and the control method further includes:
in the heat exchange mode, the first damper 2 is opened, and the second damper 4 is closed.
This embodiment can make heat transfer device be in the heat transfer mode through combination control blast gate when needing the heat transfer to satisfy user's refrigeration or heating demand, for example the heat transfer mode is the refrigeration mode in summer, is the mode of heating in winter. The heat exchange device flexibly switches between a heat exchange mode and a ventilation mode by controlling the first air valve 2 and the second air valve 4, can meet the heat exchange requirement, can reduce the running energy consumption of the fan in transition seasons, and achieves the energy-saving effect.
In some embodiments, the heat exchange device comprises a plurality of heat exchangers 1 arranged at intervals along the second direction y, each heat exchanger 1 is correspondingly provided with a first air valve 2, and a bypass air duct 3 is arranged between every two adjacent heat exchangers 1; in the ventilation mode, closing the first air valve 2 and opening the second air valve 4 specifically includes:
in the ventilation mode, all the first dampers 2 are closed and all the second dampers 4 are opened.
This embodiment can be in the ventilation mode, all first blast gates 2 are closed to prevent the air current through each heat exchanger 1, reduce power consumption, and all second blast gates 4 are opened, in order to allow the air current to ventilate simultaneously through each bypass wind channel 3, thereby improve ventilation efficiency, and the homogeneity when the air current ventilates.
In some embodiments, the heat exchanger 1 includes an inlet pipe 12, the inlet pipe 12 is selectively fed with a liquid refrigerant at a first temperature or a second temperature, and the first temperature is higher than the second temperature, and the control method further includes:
obtaining the required cold quantity according to the temperature set by the user;
and liquid refrigerant with the first temperature or the second temperature is determined to be introduced into the heat exchanger 1 according to the required cold quantity.
This embodiment is through selectively introducing the liquid refrigerant of different temperatures to heat exchanger 1, and under the certain circumstances of heat transfer area, different refrigeration capacities can be realized to single heat exchanger 1, consequently can increase the control range of cold volume when the heat transfer, satisfies the heat transfer demand of user under the different loads in different seasons more in a flexible way, improves the adaptability of user's wider demand.
In some embodiments, referring to fig. 4, the heat exchange device further has a heat exchange mode, the heat exchange mode including an energy saving refrigeration mode; the control method further comprises the following steps:
under the condition that the required cold quantity is not more than the first preset cold quantity, the heat exchange device is in an energy-saving refrigeration mode, and only the first air valve 2 corresponding to one heat exchanger 1 is opened and liquid refrigerant at the first temperature is introduced; the first preset refrigerating capacity is the maximum refrigerating capacity when the heat exchanger 1 is filled with the liquid refrigerant at the first temperature.
According to the embodiment, only one heat exchanger 1 is opened to exchange heat under the condition that the required cold quantity is not larger than the maximum refrigerating capacity which can be achieved by the single heat exchanger 1 when the liquid refrigerant with the first temperature is introduced, and other heat exchangers 1 are in the closed state, so that the requirement on the refrigerating capacity can be met, the energy loss of a heat exchange device can be reduced, and the energy-saving effect is improved.
In some embodiments, referring to fig. 4, the heat exchange device further has a heat exchange mode, the heat exchange mode including an energy saving refrigeration mode; the control method further comprises the following steps:
under the condition that the required cold quantity is larger than the first preset cold quantity and smaller than the second preset cold quantity, the heat exchange device is in an energy-saving refrigeration mode, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted, and the heat exchangers 1 in the working state are introduced with liquid refrigerants at the first temperature, so that the actual cold quantity meets the required cold quantity; the first preset cold quantity is the maximum refrigerating capacity when the heat exchanger 1 is introduced with the liquid refrigerant at the first temperature, and the second preset cold quantity is larger than the first preset cold quantity.
This embodiment is not more than the biggest refrigerating capacity that single heat exchanger 1 can reach letting in the liquid refrigerant of first temperature at the demand cold volume, and under the demand cold volume is not too big circumstances, it can not satisfy the demand cold volume to open a heat exchanger 1, just can obtain the demand cold volume according to the temperature that the user set up, make the heat exchanger 1 of suitable quantity simultaneously heat transfer in view of the above, and adjust the aperture that each heat exchanger 1 corresponds first blast gate 2 at the heat transfer in-process, can satisfy the demand cold volume, can reduce the energy that heat transfer device consumed again, energy-saving effect is improved. Moreover, the liquid refrigerant with the first temperature is introduced into the heat exchanger 1, so that the cold quantity adjusting range of a user can be met, the generation of condensed water can be reduced, and the heat exchange efficiency is ensured.
In some embodiments, referring to fig. 4, the heat exchange device further has a heat exchange mode, the heat exchange mode including a performance cooling mode; the control method further comprises the following steps:
under the condition that the required cold quantity is not less than the second preset cold quantity, the heat exchange device is in a performance refrigeration mode, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted, and the heat exchangers 1 in the working state are introduced with liquid refrigerants at the second temperature, so that the actual cold quantity meets the required cold quantity; the second preset refrigerating capacity is larger than the maximum refrigerating capacity of the heat exchanger 1 when the liquid refrigerant with the first temperature is introduced.
In the embodiment, under the condition that the required cold quantity is not more than the maximum refrigerating capacity which can be reached by a single heat exchanger 1 when liquid refrigerant with a first temperature is introduced and the required cold quantity is larger, firstly, the liquid refrigerant with a second temperature lower in temperature is introduced into the heat exchanger 1, so that the single heat exchanger 1 can reach larger refrigerating capacity and the adjustable range of the cold quantity is increased; secondly, can obtain the demand cold volume according to the temperature that the user set up, make the heat exchanger 1 of suitable quantity simultaneously heat transfer in view of the above to adjust the aperture that each heat exchanger 1 corresponds first blast gate 2 in the heat transfer process, can satisfy the demand cold volume, can reduce the energy that heat transfer device consumed again, improve energy-conserving effect.
The working principle of the heat exchange device of the present disclosure will be specifically described with reference to fig. 1 to 4.
The heat exchange device comprises a plurality of heat exchangers 1 arranged at intervals along the second direction y, the second direction y can be the height direction, and for example, three heat exchangers 1 can be arranged. The heat exchange device has a ventilation mode and a heat exchange mode, and the heat exchange mode is described by taking a refrigeration mode as an example.
1. The ventilation mode is selected when the season passes through, all first blast gates 2 are closed, all second blast gates 4 are opened, the heat exchanger 1 does not need to work at this moment, the air current directly passes through the unit from the bypass air duct 3, the air current flows through the two heat exchangers at this moment, and the air current reduces through in-process pressure loss due to the fact that the fins do not need to pass through, and then the motor power is reduced, the unit energy consumption is reduced, and therefore the purpose of energy saving is achieved.
2. In the refrigeration mode, two water inlet temperatures can be selected, namely normal-temperature water at 7 ℃/12 ℃ and medium-temperature water at 9 ℃/15 ℃. The user can set the temperature range and the water inlet and outlet temperature through the hand operator to determine the cold quantity and the loss. If the maximum refrigerating capacity of a single heat exchanger 1 under the standard condition of 5000 air volume (normal temperature water) is 32.2KW, and under the same air volume and air inlet condition (medium temperature water), the maximum refrigerating capacity of the single heat exchanger 1 is 22.56 KW. When the maximum refrigerating capacity is obtained, the fan blades of the first air valve 2 are adjusted to be consistent with the direction of return air.
The cooling mode may include two types: before the refrigeration mode is selected, a user can set the temperature through a hand operator, program software arranged in a controller can automatically calculate required cold energy reaching the temperature set by the user, and the refrigeration mode is selected according to the required cold energy.
It is determined whether the required refrigeration capacity is greater than the first preset refrigeration capacity, i.e. greater than 22.56KW, on the basis of which the following operating mode can be selected.
If the required cold quantity is not larger than the first preset cold quantity, the unit is automatically switched into an energy-saving refrigeration mode, and the unit can also be manually switched, only the first air valve 2 of one heat exchanger 1 is opened, and the opening degree of the first air valve 2 is adjusted according to the required cold quantity.
And if the required cold quantity is greater than the first preset cold quantity, further judging whether the required cold quantity is less than a second preset cold quantity, wherein the second preset cold quantity is greater than the first preset cold quantity.
If the required cold quantity is larger than the first preset cold quantity and smaller than the second preset cold quantity, the unit enters an energy-saving refrigeration mode, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted to change the air inlet quantity of the unit so as to change the cold quantity output, and the heat exchangers 1 in the working state are introduced with liquid refrigerants (medium-temperature water at 9 ℃/15 ℃) at the first temperature so as to enable the actual cold quantity to meet the required cold quantity. Optionally, temperature sensing bags are installed on the inlet and outlet liquid pipes 12 and 13, for example, when the detected temperature is 9 ± 0.1 ℃/15 ± 0.1 ℃, the refrigerant of the system adopts 9 ℃/15 ℃ medium temperature water, the required heat exchange amount is automatically calculated, a signal is transmitted to an air valve actuator through bluetooth, and the cold quantity is adjustable by adjusting the opening degree of the first air valve 2. Under the energy-saving refrigeration mode, the water resistance of the medium-temperature water is reduced by nearly 75 percent relative to that of the normal-temperature water under the same working condition, so that the energy consumption can be reduced, and the required cold quantity can be met.
If the required cold quantity is not less than the second preset cold quantity, the unit enters a performance refrigeration mode, the number of the heat exchangers 1 in the working state and the opening degree of the first air valve 2 are adjusted, and the heat exchangers 1 in the working state are filled with liquid refrigerants (7/12 ℃ normal temperature water) at the second temperature, so that the actual cold quantity meets the required cold quantity, and the cold quantity adjustable range is enlarged. For example, when medium-temperature water is adopted at 9/15 ℃, 10000 air volume is 45.12KW under the standard condition, but when normal-temperature water is used at 7/12 ℃ for entering and exiting the main pipe, the heat exchange area is reduced if the same heat exchange volume is needed, and the ratio of the heat exchange area to the normal-temperature water is 1: 0.64. The self-adaptive regulation under different loads in different seasons can be met by controlling the opening of the first air valve 2 to control the heat exchange air inlet quantity. The output cold quantity is larger in the performance refrigeration mode, but the energy consumption is increased along with the output cold quantity.
A heat exchange device and a refrigeration device provided by the present disclosure are described in detail above. The principles and embodiments of the present disclosure are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present disclosure. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.
Claims (12)
1. A heat exchange device, comprising:
a heat exchanger (1);
a first air valve (2) arranged on one side of the heat exchanger (1) along a first direction (x) and configured to adjust the air quantity passing through the heat exchanger (1), wherein the first direction (x) is consistent with the air flow direction;
a bypass air duct (3) provided at a side of the heat exchanger (1) along a second direction (y) perpendicular to the first direction (x); and
a second air valve (4) configured to adjust an air volume passing through the bypass air duct (3);
wherein the heat exchanger device has a ventilation mode in which the first damper (2) is closed and the second damper (4) is open.
2. A heat exchange device according to claim 1, characterized in that the heat exchange device also has a heat exchange mode in which the first damper (2) is open and the second damper (4) is closed.
3. A heat exchange device according to claim 1, wherein the heat exchanger (1) comprises a heat exchange tube (11), the heat exchange tube (11) comprising a straight tube section (111), the straight tube section (111) extending in a third direction (z), the third direction (z) being perpendicular to the first direction (x) and the second direction (y).
4. A heat exchange device according to claim 3, characterised in that in the third direction (z) the first air flap (2) extends along the entire length of the heat exchanger (1) and/or the bypass air duct (3) and the second air flap (4) each extend along the entire length of the heat exchanger (1).
5. The heat exchange device according to claim 1, comprising a plurality of heat exchangers (1) arranged at intervals along the second direction (y), wherein one first air valve (2) is arranged corresponding to each heat exchanger (1), and the bypass air duct (3) is arranged between every two adjacent heat exchangers (1).
6. A heat exchange device according to claim 5, characterised in that in the ventilation mode all the first dampers (2) are closed and all the second dampers (4) are open.
7. The heat exchange device according to any one of claims 1 to 6, wherein the heat exchanger (1) comprises a liquid inlet pipe (12), the liquid inlet pipe (12) is selectively introduced with a liquid refrigerant at a first temperature or a second temperature, and the first temperature is higher than the second temperature.
8. The heat exchange device of claim 7, further having a heat exchange mode, the heat exchange mode comprising an economized refrigeration mode;
the heat exchange device further comprises a controller, wherein the controller is configured to enable the heat exchange device to be in the energy-saving refrigeration mode under the condition that the required refrigeration capacity is not larger than a first preset refrigeration capacity, and only a first air valve (2) corresponding to one heat exchanger (1) is opened and liquid refrigerant at a first temperature is introduced; the first preset refrigerating capacity is the maximum refrigerating capacity when the heat exchanger (1) is filled with liquid refrigerant at the first temperature.
9. The heat exchange device according to claim 7, wherein the heat exchanger (1) is provided with a plurality of heat exchange devices, and the heat exchange devices further have heat exchange modes, wherein the heat exchange modes comprise an energy-saving refrigeration mode;
the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in the energy-saving refrigeration mode under the condition that the required refrigeration capacity is larger than a first preset refrigeration capacity and smaller than a second preset refrigeration capacity, the number of the heat exchangers (1) in the working state and the opening degree of the first air valve (2) are adjusted, and liquid refrigerants with first temperature are introduced into the heat exchangers (1) in the working state, so that the actual refrigeration capacity meets the required refrigeration capacity; the first preset cold quantity is the maximum refrigeration quantity when the heat exchanger (1) is introduced with a liquid refrigerant at a first temperature, and the second preset cold quantity is larger than the first preset cold quantity.
10. The heat exchange device according to claim 7, wherein the heat exchanger (1) is provided with a plurality of heat exchange modes, and the heat exchange device further comprises a heat exchange mode which comprises a performance refrigeration mode;
the heat exchange device further comprises a controller, the controller is configured to enable the heat exchange device to be in the performance refrigeration mode under the condition that the required refrigeration capacity is not smaller than second preset refrigeration capacity, the number of the heat exchangers (1) in the working state and the opening degree of the first air valve (2) are adjusted, and liquid refrigerants with second temperature are introduced into the heat exchangers (1) in the working state, so that the actual refrigeration capacity meets the required refrigeration capacity; the second preset refrigerating capacity is larger than the maximum refrigerating capacity of the heat exchanger (1) when the liquid refrigerant with the first temperature is introduced.
11. A refrigeration apparatus, comprising: the heat exchange device of any one of claims 1 to 10.
12. The refrigeration appliance of claim 11 wherein the refrigeration appliance is a wind cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123167019.XU CN216522315U (en) | 2021-12-16 | 2021-12-16 | Heat exchange device and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123167019.XU CN216522315U (en) | 2021-12-16 | 2021-12-16 | Heat exchange device and refrigeration equipment |
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| Publication Number | Publication Date |
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| CN216522315U true CN216522315U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123167019.XU Active CN216522315U (en) | 2021-12-16 | 2021-12-16 | Heat exchange device and refrigeration equipment |
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| Country | Link |
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| CN (1) | CN216522315U (en) |
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2021
- 2021-12-16 CN CN202123167019.XU patent/CN216522315U/en active Active
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