Dehumidifier

Abstract

The invention provides a dehumidifier which comprises a main heat exchange assembly and an auxiliary heat exchange assembly, the main heat exchange assembly comprises a main heat exchanger and a compressor, the main heat exchanger and the compressor form a refrigerant main circulation flow path, and the main heat exchanger comprises a main air duct used for dehumidifying and heating flowing air; the auxiliary heat exchanger comprises a refrigerant auxiliary circulating flow path, a first auxiliary air duct and a second auxiliary air duct; the target space, the first auxiliary air duct and the main air duct sequentially communicate to form an air circulation flow path, and the second auxiliary air duct communicates outside the target space; when flowing through the first auxiliary air duct, air in the target space exchanges heat with a refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted into a gas state from a liquid state, and heat load dissipation is accelerated; when flowing through the second auxiliary air duct, air outside the target space exchanges heat with a refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted into a liquid state from a gas state, and the dehumidification capacity is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dehumidification, and in particular relates to a dehumidifier. Background Art

[0002] To achieve portability and a compact footprint, existing portable dehumidifiers typically connect the evaporator and condenser in series, with the condenser recovering excess heat. However, when the dehumidification space is small and the dehumidification resistance is high, insufficient condenser waste heat recovery can occur, leading to frequent compressor shutdowns due to excessively high exhaust temperatures and incomplete dehumidification. Summary of the Invention

[0003] In view of this, the present invention provides a dehumidifier to solve the problems in the prior art of insufficient waste heat recovery of the condenser, resulting in frequent abnormalities of the compressor shutting down for protection due to excessively high exhaust temperature and incomplete dehumidification.

[0004] The present invention provides a dehumidifier for dehumidifying air in a target space, wherein the target space is formed with a target space air inlet and a target space air outlet; the dehumidifier comprises:

[0005] A main heat exchange assembly, comprising a main heat exchanger and a compressor; the main heat exchanger comprises a main refrigerant flow path and a main air duct in heat exchange relationship with the main refrigerant flow path, the main refrigerant flow path and the compressor are connected to form a main refrigerant circulation flow path;

[0006] The auxiliary heat exchange assembly includes an auxiliary heat exchanger; the auxiliary heat exchanger includes a refrigerant auxiliary circulation flow path and a first auxiliary air duct and a second auxiliary air duct having a heat exchange relationship with the refrigerant auxiliary circulation flow path;

[0007] The first auxiliary air duct, the main air duct, and the target space are used to sequentially communicate with each other to form an air circulation flow path; the first auxiliary air duct is used to exchange heat between the air flowing through the target space and the refrigerant in the refrigerant auxiliary circulation flow path, thereby converting the refrigerant in the refrigerant auxiliary circulation flow path from liquid to gas; the main air duct is used to exchange heat between the air flowing through the target space and the refrigerant in the refrigerant main flow path, thereby dehumidifying and heating the air flowing through the target space;

[0008] The second secondary air duct is used to communicate with the outside of the target space, so that the air outside the target space flowing through the second secondary air duct exchanges heat with the refrigerant in the secondary refrigerant circulation path, thereby converting the refrigerant in the secondary refrigerant circulation path from gas to liquid.

[0009] Further optionally, the refrigerant secondary circulation flow path includes a secondary refrigerant pipe, the secondary refrigerant pipe is formed with a first secondary heat exchange structure and a second secondary heat exchange structure; the first secondary heat exchange structure and the first secondary air duct have a heat exchange relationship, and the second secondary heat exchange structure and the second secondary air duct have a heat exchange relationship;

[0010] The first secondary heat exchange structure and the second secondary heat exchange structure are connected to form the refrigerant secondary circulation flow path; the refrigerant in the first secondary heat exchange structure is used for heat exchange with the air flowing through the first secondary air duct, so that the refrigerant in the first secondary heat exchange structure is converted from liquid to gas; the refrigerant in the second secondary heat exchange structure is used for heat exchange with the air flowing through the second secondary air duct, so that the refrigerant in the second secondary heat exchange structure is converted from gas to liquid.

[0011] Further optionally, the first secondary heat exchange structure and the second secondary heat exchange structure are arranged vertically opposite to each other, and the first secondary heat exchange structure is below the second secondary heat exchange structure;

[0012] The first auxiliary air duct and the second auxiliary air duct are arranged vertically opposite to each other, and the first auxiliary air duct is below the second auxiliary air duct.

[0013] Further optionally, the auxiliary heat exchange assembly further includes a heat exchanger shell, and the heat exchanger shell is arranged around the outside of the auxiliary heat exchanger;

[0014] The heat exchanger housing is formed with a housing air inlet and a housing air outlet at positions corresponding to the air inlet end and the air outlet end of the first auxiliary air duct, respectively; the housing air inlet is used to communicate with the air outlet of the target space, and the housing air inlet, the first auxiliary air duct, the housing air outlet and the main air duct are connected in sequence;

[0015] The heat exchanger housing is formed with a housing vent at a position corresponding to the second auxiliary air duct, and the housing vent is used to connect the second auxiliary air duct and the outside of the target space.

[0016] Further optionally, the main heat exchange assembly further includes a first main fan and a second main fan;

[0017] The first main fan is arranged at the air outlet end of the main air duct, and is used to transport the air in the main air duct to the target space; the second main fan is arranged at the air inlet end of the main air duct, and is used to transport the air in the first auxiliary air duct to the main air duct.

[0018] Further optionally, the auxiliary heat exchange component further includes an auxiliary fan, and the auxiliary fan is used to transport air outside the target space to the second auxiliary air duct.

[0019] Further optionally, the rotation speeds of the first main fan, the second main fan and the auxiliary fan are all adjustable;

[0020] The speeds of the first main fan, the second main fan and the auxiliary fan can be coordinated and adjusted according to the humidity of the air in the target space and / or the temperature of the air in the target space and / or the humidity of the air outside the target space and / or the temperature of the air outside the target space.

[0021] Further optionally, the refrigerant main circulation flow path and the refrigerant sub-circulation flow path are independent of each other, and the first sub-air duct and the second sub-air duct are independent of each other.

[0022] Further optionally, the main heat exchanger includes an evaporator and a condenser, the evaporator includes an evaporator refrigerant tube and an evaporator air duct having a heat exchange relationship, and the condenser includes a condenser refrigerant tube and a condenser air duct having a heat exchange relationship; the evaporator refrigerant tube and the condenser refrigerant tube are connected to form the refrigerant main flow path, and the evaporator air duct and the condenser air duct are connected to form the main air duct;

[0023] The refrigerant in the evaporator refrigerant tube is used to exchange heat with the air flowing through the evaporator air duct and dehumidify the air; the refrigerant in the condenser refrigerant tube is used to exchange heat with the air flowing through the condenser air duct and heat the air.

[0024] Further optionally, the target space is a room or a space formed by a commercial chiller.

[0025] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0026] When the air in the target space flows through the first auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted from liquid to gas, thereby accelerating the dissipation of heat load; when the air outside the target space flows through the second auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted from gas to liquid, thereby improving the dehumidification capacity; in this way, the problem of insufficient waste heat recovery of the condenser in the existing dehumidifier is solved through the phase change of the refrigerant in the refrigerant auxiliary circulation flow path. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0029] Figure 1a and Figure 1b This is a schematic diagram of the axial structure of a dehumidifier embodiment provided by the present invention;

[0030] Figure 2 This is a schematic diagram of the main structure of a dehumidifier embodiment provided by the present invention;

[0031] Figure 3 A schematic diagram of the top view of the dehumidifier embodiment provided by the present invention;

[0032] Figure 4 A right side structural diagram of a dehumidifier embodiment provided by the present invention;

[0033] Figure 5 A schematic diagram of the dehumidification principle of the dehumidifier provided by the present invention when applied to a commercial chiller;

[0034] Figure 6a and Figure 6b A schematic structural diagram of an embodiment of a secondary heat exchange assembly provided by the present invention;

[0035] In the picture:

[0036] 1- Main heat exchange component; 11- Evaporator; 111- Evaporator air duct; 12- Condenser; 121- Condenser air duct; 13- Compressor; 141- First main fan; 142- Second main fan; 143- Third main fan;

[0037] 2-slave heat exchange assembly; 21-slave heat exchanger; 211-first sub-heat exchange structure; 212-second sub-heat exchange structure; 213-first sub-air duct; 214-second sub-air duct; 22-heat exchanger housing; 23-sub-fan;

[0038] 31- chassis; 311- first installation area; 312- second installation area; 32- base; 33- housing; 331- front housing; 332- rear housing; 333- right housing; 334- support base; 34- electric control box; 35- frame; 351- installation cavity;

[0039] 41 - first pipeline; 42 - second pipeline; 43 - third pipeline; 44 - target space; 441 - inside the target space; 45 - outside the target space. DETAILED DESCRIPTION

[0040] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0041] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0042] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0043] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0044] Existing portable dehumidifiers, when the dehumidification space is small and the dehumidification resistance is large, suffer from insufficient condenser waste heat recovery, resulting in frequent abnormal shutdown protection due to excessively high compressor exhaust temperature and incomplete dehumidification.

[0045] The present invention creatively provides a dehumidifier, comprising a main heat exchange assembly and a secondary heat exchange assembly, wherein the main heat exchange assembly comprises a main heat exchanger and a compressor, wherein the main heat exchanger and the compressor form a main refrigerant circulation flow path, and the main heat exchanger comprises a main air duct for dehumidifying and heating the air flowing therethrough; the secondary heat exchanger comprises a secondary refrigerant circulation flow path, a first secondary air duct, and a second secondary air duct; a target space, the first secondary air duct, and the main air duct are sequentially connected to form an air circulation flow path, and the second secondary air duct is connected to the outside of the target space;

[0046] When the air in the target space flows through the first auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted from liquid to gas, thereby accelerating the dissipation of heat load; when the air outside the target space flows through the second auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant auxiliary circulation flow path, so that the refrigerant in the refrigerant auxiliary circulation flow path is converted from gas to liquid, thereby improving the dehumidification capacity.

[0047] like Figures 1a to 5 As shown, this embodiment provides a dehumidifier for dehumidifying air in a target space 441; specifically, the target space 44 is a room or a space formed by a commercial chiller, the target space inside is the interior of the target space, and the target space outside is the exterior of the target space; the dehumidifier includes:

[0048] The main heat exchange assembly 1 includes a main heat exchanger and a compressor 13; the main heat exchanger includes a main refrigerant flow path and a main air duct having a heat exchange relationship with the main refrigerant flow path, and the main refrigerant flow path and the compressor are connected to form a main refrigerant circulation flow path;

[0049] The auxiliary heat exchange assembly 2 includes an auxiliary heat exchanger 21; the auxiliary heat exchanger 21 includes a refrigerant auxiliary circulation flow path and a first auxiliary air duct 213 and a second auxiliary air duct 214 having a heat exchange relationship with the refrigerant auxiliary circulation flow path;

[0050] The refrigerant secondary circulation flow path and the refrigerant primary circulation flow path are independent of each other and are not connected; the first secondary air duct 213 and the second secondary air duct 214 are independent of each other and are not connected;

[0051] The air inlet end of the first auxiliary air duct 213 is used to communicate with the air outlet of the target space, the air outlet end of the first auxiliary air duct 213 is connected to the air inlet end of the main air duct, and the air outlet end of the main air duct is used to communicate with the air inlet of the target space. Then, the first auxiliary air duct 213, the main air duct, and the target space 44 are used to be connected in sequence to form an air circulation flow path; the air in the target space 441 first enters the first auxiliary air duct 213, then enters the main air duct, and then enters the target space 441 again; in this way, the air in the target space 441 can circulate in the air circulation flow path;

[0052] The first secondary air duct 213 is used to exchange heat between the air flowing through the target space 441 and the refrigerant in the secondary refrigerant circulation path, thereby converting the refrigerant in the secondary refrigerant circulation path from liquid to gas. The main air duct is used to exchange heat between the air flowing through the target space 441 and the refrigerant in the main refrigerant path, thereby dehumidifying and heating the air flowing through the target space 441.

[0053] The second auxiliary air duct 214 is used to communicate with the outside of the target space 45, so that the air flowing through the outside of the target space 45 and the refrigerant in the secondary refrigerant circulation flow path exchange heat, thereby converting the refrigerant in the secondary refrigerant circulation flow path from gas to liquid;

[0054] That is, when the air in the target space 441 flows through the first auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant secondary circulation flow path, causing the refrigerant in the refrigerant secondary circulation flow path to absorb heat and transform from liquid to gas. When the air outside the target space 45 flows through the second auxiliary air duct, it exchanges heat with the refrigerant in the refrigerant secondary circulation flow path, causing the refrigerant in the refrigerant secondary circulation flow path to release heat and transform from gas to liquid. Through the phase change of the refrigerant in the refrigerant secondary circulation flow path, the heat load is dissipated faster, the dehumidification capacity is improved, and the problem of insufficient waste heat recovery of the condenser in existing dehumidifiers is solved.

[0055] When the air in the target space 441 flows through the main air duct, it exchanges heat with the refrigerant in the refrigerant main flow path. The refrigerant in the refrigerant main flow path dehumidifies and heats the air in the target space 441 flowing through it.

[0056] The following further describes the specific structure of the main heat exchanger. The main heat exchanger includes an evaporator 11 and a condenser 12. The evaporator 11 includes an evaporator refrigerant tube and an evaporator air duct 111 having a heat exchange relationship. The condenser 12 includes a condenser refrigerant tube and a condenser air duct 121 having a heat exchange relationship. The evaporator refrigerant tube and the condenser refrigerant tube are connected to form a refrigerant main flow path. The evaporator air duct 111 and the condenser air duct 121 are connected to form a main air duct.

[0057] The refrigerant in the evaporator refrigerant tube is used to exchange heat with the air flowing through the evaporator duct 111 and dehumidify the air; the refrigerant in the condenser refrigerant tube is used to exchange heat with the air flowing through the condenser duct 121 and heat the air; that is, the first sub-duct 213, the evaporator duct 111, the condenser duct 121 and the target space 441 are connected in sequence to form an air circulation flow path, the air discharged from the first sub-duct 213 first enters the evaporator duct 111, and heat exchanges with the refrigerant in the evaporator refrigerant tube, dehumidifies the air, removes moisture in the air, and achieves the dehumidification effect; the air discharged from the evaporator duct 111 enters the condenser duct 121, and heat exchanges with the refrigerant in the condenser refrigerant tube, heats the air, causes the temperature of the air to rise, and achieves the heating effect; the air discharged from the condenser duct 121 enters the target space 441.

[0058] like Figure 6a and Figure 6b As shown, the specific structure of the auxiliary heat exchanger 21 is further described below. The refrigerant auxiliary circulation path includes an auxiliary refrigerant pipe, and the auxiliary refrigerant pipe is formed with a first auxiliary heat exchange structure 211 and a second auxiliary heat exchange structure 212 arranged opposite to each other; the first auxiliary heat exchange structure 211 and the first auxiliary air duct 213 have a heat exchange relationship, and the second auxiliary heat exchange structure 212 and the second auxiliary air duct 214 have a heat exchange relationship;

[0059] The first secondary heat exchange structure 211 and the second secondary heat exchange structure 212 are connected to form a secondary refrigerant circulation path, that is, in the secondary heat exchanger 21, the refrigerant can circulate in the first secondary heat exchange structure 211 and the second secondary heat exchange structure 212;

[0060] The refrigerant in the first secondary heat exchange structure 211 is used for heat exchange with the air flowing through the first secondary air duct 213, so that the refrigerant in the first secondary heat exchange structure 211 is converted from liquid to gas; the refrigerant in the second secondary heat exchange structure 212 is used for heat exchange with the air flowing through the second secondary air duct 214, so that the refrigerant in the second secondary heat exchange structure 212 is converted from gas to liquid.

[0061] That is, when the air in the target space 441 flows through the first sub-duct 213, it exchanges heat with the refrigerant in the first sub-heat exchange structure 211, so that the refrigerant in the first sub-heat exchange structure 211 is converted from liquid to gas; when the air outside the target space 45 flows through the second sub-duct 214, it exchanges heat with the refrigerant in the second sub-heat exchange structure 212, so that the refrigerant in the second sub-heat exchange structure 212 is converted from gas to liquid; in this way, as the refrigerant circulates in the first sub-heat exchange structure 211 and the second sub-heat exchange structure 212, the air in the target space 441 and the air outside the target space 45 exchange heat with the refrigerant in the refrigerant sub-circulation flow path, so that the phase state of the refrigerant in the refrigerant sub-circulation flow path changes, the heat load is accelerated, and the dehumidification capacity is improved.

[0062] Specifically, the first auxiliary heat exchange structure 211 and the second auxiliary heat exchange structure 212 are arranged relative to each other in the upper and lower parts, and the first auxiliary heat exchange structure 211 is below the second auxiliary heat exchange structure 212; the first auxiliary air duct 213 and the second auxiliary air duct 214 are arranged relative to each other in the upper and lower parts, and the first auxiliary air duct 213 is below the second auxiliary air duct 214; the first auxiliary heat exchange structure 211 and the second auxiliary heat exchange structure 212 arranged relative to each other in the upper and lower parts can use gravity to promote the flow of refrigerant and improve the heat exchange efficiency.

[0063] In other embodiments, the refrigerant secondary circulation flow path includes a secondary refrigerant pipe, and the secondary refrigerant pipe includes a first secondary refrigerant pipe and a second secondary refrigerant pipe; the first secondary refrigerant pipe and the first secondary air duct 213 have a heat exchange relationship, and the second secondary refrigerant pipe and the second secondary air duct 214 have a heat exchange relationship;

[0064] The first auxiliary refrigerant pipe and the second auxiliary refrigerant pipe are connected to form a secondary refrigerant circulation path, that is, in the secondary heat exchanger 21, the refrigerant can circulate in the first auxiliary refrigerant pipe and the second auxiliary refrigerant pipe;

[0065] The refrigerant in the first auxiliary refrigerant pipe is used for heat exchange with the air flowing through the first auxiliary air duct 213, so that the refrigerant in the first auxiliary refrigerant pipe is converted from liquid to gas; the refrigerant in the second auxiliary refrigerant pipe is used for heat exchange with the air flowing through the second auxiliary air duct 214, so that the refrigerant in the second auxiliary refrigerant pipe is converted from gas to liquid;

[0066] That is, when the air in the target space 441 flows through the first sub-air duct 213, it exchanges heat with the refrigerant in the first sub-refrigerant tube, so that the refrigerant in the first sub-refrigerant tube is converted from liquid to gas; when the air outside the target space 45 flows through the second sub-air duct 214, it exchanges heat with the refrigerant in the second sub-refrigerant tube, so that the refrigerant in the second sub-refrigerant tube is converted from gas to liquid; in this way, as the refrigerant circulates in the first sub-refrigerant tube and the second sub-refrigerant tube, the air in the target space 441 and the air outside the target space 45 exchange heat with the refrigerant in the refrigerant sub-circulation flow path, so that the phase of the refrigerant in the refrigerant sub-circulation flow path changes, the heat load is accelerated to be dissipated, and the dehumidification capacity is improved.

[0067] The following further describes the housing required for installing the auxiliary heat exchanger. The auxiliary heat exchange assembly 2 also includes a heat exchanger housing 22, which is arranged outside the auxiliary heat exchanger 21.

[0068] The heat exchanger shell 22 is formed with a shell air inlet and a shell air outlet at positions corresponding to the air inlet and air outlet ends of the first auxiliary air duct 213, respectively. The shell air inlet is used to communicate with the air outlet of the target space, and the shell air inlet, the first auxiliary air duct 213, the shell air outlet and the main air duct are connected in sequence. That is, the air in the target space 441 enters the first auxiliary air duct 213 through the shell air inlet and then enters the main air duct through the shell air outlet. When the air in the target space 441 flows through the first auxiliary air duct 213, it exchanges heat with the refrigerant in the first auxiliary refrigerant pipe, thereby accelerating the dissipation of the heat load.

[0069] The heat exchanger housing 22 has a housing vent formed at a location corresponding to the second auxiliary air duct 214 . The housing vent communicates with the second auxiliary air duct 214 and the target space 45 . That is, air from the target space 45 can enter the second auxiliary air duct 214 . When the air from the target space 45 flows through the second auxiliary air duct 214 , it exchanges heat with the refrigerant in the second auxiliary refrigerant pipe.

[0070] The refrigerant circulates in the first sub-refrigerant pipe and the second sub-refrigerant pipe, and the refrigerant in the first sub-refrigerant pipe is converted from liquid to gas, and the refrigerant in the second sub-refrigerant pipe is converted from gas to liquid; the heat load is accelerated to dissipate, the dehumidification capacity is improved, and the problem of the abnormal frequency of shutdown protection of the existing dehumidifier due to insufficient waste heat recovery of the condenser 12, resulting in excessive exhaust temperature of the compressor 13.

[0071] The following describes the power mechanism required for the air in the target space 441 to circulate in the air circulation path. The main heat exchange component 1 also includes a first main fan 141 and a second main fan 142. The first main fan 141 is arranged at the air outlet end of the main air duct, and is used to transport the air in the main air duct to the target space 441; the second main fan 142 is arranged at the air inlet end of the main air duct, and is used to transport the air in the first auxiliary air duct 213 to the main air duct; that is, the first main fan 141 and the second main fan 142 are connected in series in the air circulation path, and the first main fan 141 and the second main fan 142 are connected in series. Under the action of the second main fan 142, the air in the target space 441 flows through the first auxiliary air duct 213 and the main air duct in sequence (first enters the evaporator air duct 111 and then enters the condenser air duct 121), and then enters the target space 441 again; in this way, it circulates in the air circulation path to achieve dehumidification of the air in the target space 441; the power of the air flowing through the first auxiliary air duct 213 and the main air duct during the dehumidification process is increased, so that the air circulates in the air circulation path, improves the dehumidification efficiency, and fully solves the problem of incomplete dehumidification when the dehumidification space is small and the dehumidification resistance is large.

[0072] In some embodiments, the main heat exchange assembly 1 further includes a third main fan 143, which is disposed at the air outlet of the first main fan 141 and is configured to transport the air passing through the main air duct to the target space 441; that is, the air exhausted from the first main fan 141 can enter the target space 441 under the action of the third main fan 143;

[0073] That is, under the action of the first main fan 141, the second main fan 142 and the third main fan 143, the air in the target space 441 flows through the first auxiliary air duct 213 and the main air duct in turn (first enters the evaporator air duct 111 and then enters the condenser air duct 121), and then enters the target space 441 again; in this way, it circulates in the air circulation flow path to achieve dehumidification of the air in the target space 441; the power of the air flowing through the air circulation during the dehumidification process is further enhanced, thereby improving the dehumidification efficiency.

[0074] Preferably, the second main fan 142 and the third main fan 143 are both static pressure fans.

[0075] The following describes the power mechanism required for the air outside the target space 45 to circulate in the second auxiliary air duct 214. The auxiliary heat exchange component 2 also includes an auxiliary fan 23, which is used to transport the air outside the target space 45 to the second auxiliary air duct 214. That is, under the action of the auxiliary fan 23, the air outside the target space 45 circulates outside the target space 45 and in the second auxiliary air duct 214; specifically, the auxiliary fan 23 is arranged in the second auxiliary air duct 214 or at the air inlet end of the second auxiliary air duct 214 or at the air outlet end of the second auxiliary air duct 214.

[0076] The following further describes the structure required to improve the dehumidification efficiency of the dehumidifier. The speeds of the first main fan 141, the second main fan 142 and the auxiliary fan 23 are all adjustable;

[0077] The rotation speeds of the first main fan 141 , the second main fan 142 , and the auxiliary fan 23 may be cooperatively adjusted according to the humidity of the air in the target space 441 and / or the temperature of the air in the target space 441 and / or the humidity of the air outside the target space 45 and / or the temperature of the air outside the target space 45 ;

[0078] Specifically, a humidity sensor is provided in the target space 441, and the humidity sensor detects the humidity of the air in the target space 441; a temperature sensor is provided outside the target space 45, and the temperature sensor detects the temperature of the air outside the target space 45; the dehumidifier further includes a controller, and the controller and the humidity sensor, the temperature sensor, the first main fan 141, the second main fan 142, and the auxiliary fan 23 are all electrically connected; the humidity sensor and the temperature sensor transmit the detected data to the controller, and the controller can coordinately adjust the speed of the first main fan 141, the second main fan 142, and the auxiliary fan 23 according to the data detected by the humidity sensor and the temperature sensor;

[0079] Taking “coordinated adjustment of the rotational speeds of the first main fan 141, the second main fan 142, and the auxiliary fan 23 according to the humidity of the air in the target space 441 and the temperature of the air outside the target space 45” as an example to further illustrate, when the humidity of the air in the target space 441 is greater than or equal to the preset humidity and the temperature of the air outside the target space 45 is greater than or equal to the preset temperature, the rotational speeds of the first main fan 141 and the second main fan 142 are adjusted so that the air flow rate through the air circulation path is greater than or equal to the first preset flow rate, and the rotational speed of the auxiliary fan 23 is adjusted so that the air flow rate through the second auxiliary air duct 214 is greater than or equal to the second preset flow rate; when the humidity of the air in the target space 441 is less than the preset humidity and the temperature of the air outside the target space 45 is less than the preset temperature, the rotational speeds of the first main fan 141 and the second main fan 142 are adjusted so that the air flow rate through the air circulation path is less than the first preset flow rate, and the rotational speed of the auxiliary fan 23 is adjusted so that the air flow rate through the second auxiliary air duct 214 is less than the second preset flow rate;

[0080] The first preset flow rate is determined by the path length, flow area and dehumidification efficiency of the air circulation flow path, and the second preset flow rate is determined by the length, flow area and dehumidification efficiency of the second auxiliary air duct 214.

[0081] The following further describes the arrangement of the various components in the dehumidifier. The main heat exchange assembly 1 and the auxiliary heat exchange assembly 2 are arranged relative to each other on the left and right, with the main heat exchange assembly 1 on the left and the auxiliary heat exchange assembly 2 on the right. The evaporator 11, the condenser 12, and the first main fan 141 are arranged in sequence front to back, with the evaporator 11 in front, the first main fan 141 in the back, and the condenser 12 between the evaporator 11 and the first main fan 141. The compressor 13 is arranged below the evaporator 11 and the condenser 12. The auxiliary heat exchanger 21 and the auxiliary fan 23 are arranged relative to each other front to back, with the auxiliary heat exchanger 21 in the back and the auxiliary fan 23 in the front.

[0082] Furthermore, the dehumidifier also includes a frame 35, a chassis 31, a base 32, a casing 33, and an electrical control box 34; the frame 35 forms an installation cavity 351, and the chassis 31, base 32, casing 33, electrical control box 34, main heat exchange assembly 1, and auxiliary heat exchange assembly 2 are all arranged in the installation cavity 351; the chassis 31 is located at the bottom of the installation cavity 351, and the chassis 31 forms a first installation area 311 and a second installation area 312 arranged opposite to each other on the left and right, with the first installation area 311 on the left and the second installation area 312 on the right; the first installation area 311 is used to install the main heat exchange assembly 1, and the second installation area 312 is used to install the auxiliary heat exchange assembly 2;

[0083] The base 32 and the housing 33 are both disposed in the first mounting area 311 , and the heat exchanger housing 22 is disposed in the second mounting area 312 . The compressor 13 is disposed on the base 32 , and the housing 33 is disposed around the outside of the compressor 13 . The housing 33 includes a front housing 331 , a rear housing 332 , and a right housing 333 connecting the front housing 331 and the rear housing 332 .

[0084] The right shell 333 is formed with a support base 334 above the compressor 13, and the support base 334 is provided with the evaporator 11 and the condenser 12; the first main fan 141 is provided on the rear shell 332, and the third main fan 143 is provided on the first main fan 141;

[0085] Optimize the position of the main heat exchange component and the auxiliary heat exchange component, reduce the occupied space, shorten the air circulation flow path, the refrigerant main circulation flow path and the refrigerant auxiliary circulation flow path, improve the dehumidification capacity of the dehumidifier, and expand the application range of the dehumidifier.

[0086] In summary, by designing the target space, the first sub-air duct 213, the evaporator air duct 111 and the condenser air duct 121 to be connected in series in sequence to form an air circulation flow, the air flowing through the target space 441 is heat-exchanged with the refrigerant in the first sub-refrigerant pipe through the first sub-air duct 213, so that the refrigerant is converted from liquid to gas; the air outside the target space is heat-exchanged with the refrigerant in the second sub-refrigerant pipe through the second sub-air duct 214, so that the refrigerant is converted from gas to liquid; the refrigerant in the refrigerant sub-circulation flow path is heated in the air. The conversion between solid and liquid states accelerates the dissipation of heat load; fully solves the problem of shutdown protection failure of existing dehumidifiers due to insufficient heat recovery of the heat load of the condenser 12 during the dehumidification process; at the same time, under the action of the second main fan 142 and the third main fan 143, the air 441 in the target space can flow smoothly through the first auxiliary air duct 213 and the main air duct, effectively improving the dehumidification capacity of the conventional dehumidifier when the condenser 12 and the evaporator 11 are connected in series, and fully solves the problem of incomplete dehumidification of existing dehumidifiers when the dehumidification space is narrow and the dehumidification resistance is large.

[0087] like Figure 5 As shown, taking the application of the dehumidifier to a commercial chiller as an example for further explanation, the main shell of the commercial chiller forms a target space 44, and the interior formed by the main shell of the commercial chiller is the target space 441; the shell wall of the main shell of the commercial chiller forms a main shell air inlet (i.e., the target space air inlet) and a main shell air outlet (i.e., the target space air outlet) that are connected to the target space 44; the main shell air outlet and the air inlet end of the first auxiliary air duct 213 are connected through a first pipe 41, the air outlet end of the first auxiliary air duct 213 and the air inlet end of the evaporator air duct 111 are connected through a second pipe 42, and the air outlet end of the first main fan 141 and the main shell air inlet are connected through a third pipe 43; the second auxiliary air duct 214 is connected to the outside of the main shell of the commercial chiller;

[0088] The air in the target space 441 enters the first auxiliary air duct 213 through the main shell air outlet and the first pipe 41, then enters the evaporator air duct 111 and the condenser air duct 121 through the second pipe 42, and finally enters the target space 44 again through the third pipe 43 and the main shell air inlet. When the air flows through the first auxiliary air duct 213, it exchanges heat with the refrigerant in the first auxiliary refrigerant pipe, converting the refrigerant in the first auxiliary refrigerant pipe from liquid to gas, thereby accelerating the dissipation of the heat load.

[0089] When the air outside the target space 45 flows through the second auxiliary air duct 214, it exchanges heat with the refrigerant in the second auxiliary refrigerant pipe, so that the refrigerant in the second auxiliary refrigerant pipe is converted from liquid to gas, thereby improving the dehumidification capacity.

[0090] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A dehumidifier for dehumidifying air in a target space (441), wherein the target space (44) is formed with a target space air inlet and a target space air outlet; characterized in that: The dehumidifier comprises: A main heat exchange assembly (1) comprises a main heat exchanger and a compressor (13); the main heat exchanger comprises a main refrigerant flow path and a main air duct having a heat exchange relationship with the main refrigerant flow path, the main refrigerant flow path and the compressor are connected to form a main refrigerant circulation flow path; The auxiliary heat exchange assembly (2) includes an auxiliary heat exchanger (21); the auxiliary heat exchanger (21) includes a refrigerant auxiliary circulation flow path and a first auxiliary air duct (213) and a second auxiliary air duct (214) having a heat exchange relationship with the refrigerant auxiliary circulation flow path; The first auxiliary air duct (213), the main air duct and the target space (44) are used to be connected in sequence to form an air circulation flow path; the first auxiliary air duct (213) is used to exchange heat between the air in the target space (441) flowing through and the refrigerant in the refrigerant auxiliary circulation flow path, thereby converting the refrigerant in the refrigerant auxiliary circulation flow path from liquid to gas; the main air duct is used to exchange heat between the air in the target space (441) flowing through and the refrigerant in the refrigerant main flow path, thereby dehumidifying and heating the air in the target space (441) flowing through; The second secondary air duct (214) is used to communicate with the outside of the target space (45), so that the air flowing through the outside of the target space (45) and the refrigerant in the secondary refrigerant circulation flow path can exchange heat, thereby converting the refrigerant in the secondary refrigerant circulation flow path from a gaseous state to a liquid state.

2. The dehumidifier according to claim 1, characterized in that The refrigerant secondary circulation flow path includes a secondary refrigerant pipe, and the secondary refrigerant pipe is formed with a first secondary heat exchange structure (211) and a second secondary heat exchange structure (212); the first secondary heat exchange structure (211) and the first secondary air duct (213) have a heat exchange relationship, and the second secondary heat exchange structure (212) and the second secondary air duct (214) have a heat exchange relationship; The first secondary heat exchange structure (211) and the second secondary heat exchange structure (212) are connected to form the refrigerant secondary circulation flow path; the refrigerant in the first secondary heat exchange structure (211) is used for heat exchange with the air flowing through the first secondary air duct (213), so that the refrigerant in the first secondary heat exchange structure (211) is converted from liquid to gas; the refrigerant in the second secondary heat exchange structure (212) is used for heat exchange with the air flowing through the second secondary air duct (214), so that the refrigerant in the second secondary heat exchange structure (212) is converted from gas to liquid.

3. The dehumidifier according to claim 2, characterized in that The first auxiliary heat exchange structure (211) and the second auxiliary heat exchange structure (212) are arranged vertically opposite to each other, and the first auxiliary heat exchange structure (211) is below the second auxiliary heat exchange structure (212); The first auxiliary air duct (213) and the second auxiliary air duct (214) are arranged vertically opposite to each other, and the first auxiliary air duct (213) is below the second auxiliary air duct (214).

4. The dehumidifier according to claim 2, characterized in that The auxiliary heat exchange assembly (2) further includes a heat exchanger shell (22), and the heat exchanger shell (22) is arranged outside the auxiliary heat exchanger (21); The heat exchanger shell (22) is formed with a shell air inlet and a shell air outlet at positions corresponding to the air inlet end and the air outlet end of the first auxiliary air duct (213), respectively; the shell air inlet is used to communicate with the air outlet of the target space, and the shell air inlet, the first auxiliary air duct (213), the shell air outlet and the main air duct are sequentially connected; The heat exchanger shell (22) is formed with a shell vent at a position corresponding to the second auxiliary air duct (214), and the shell vent is used to connect the second auxiliary air duct (214) and the outside of the target space (45).

5. The dehumidifier according to claim 1, characterized in that The main heat exchange component (1) further includes a first main fan (141) and a second main fan (142); The first main fan (141) is arranged at the air outlet end of the main air duct, and is used to transport the air in the main air duct to the target space (441); the second main fan (142) is arranged at the air inlet end of the main air duct, and is used to transport the air in the first auxiliary air duct (213) to the main air duct.

6. The dehumidifier according to claim 5, characterized in that The auxiliary heat exchange component (2) further includes an auxiliary fan (23), and the auxiliary fan (23) is used to transport air outside the target space (45) to the second auxiliary air duct (214).

7. The dehumidifier according to claim 6, characterized in that The rotation speeds of the first main fan (141), the second main fan (142) and the auxiliary fan (23) are all adjustable; The rotational speeds of the first main fan (141), the second main fan (142) and the auxiliary fan (23) can be coordinated and adjusted according to the humidity of the air in the target space (441) and / or the temperature of the air in the target space (441) and / or the humidity of the air outside the target space (45) and / or the temperature of the air outside the target space (45).

8. The dehumidifier according to claim 2, characterized in that: The refrigerant main circulation flow path and the refrigerant sub-circulation flow path are independent of each other, and the first sub-air duct (213) and the second sub-air duct (214) are independent of each other.

9. The dehumidifier according to claim 1, characterized in that The main heat exchanger comprises an evaporator (11) and a condenser (12); the evaporator (11) comprises an evaporator refrigerant tube and an evaporator air duct (111) having a heat exchange relationship; the condenser (12) comprises a condenser refrigerant tube and a condenser air duct (121) having a heat exchange relationship; the evaporator refrigerant tube and the condenser refrigerant tube are connected to form the refrigerant main flow path, and the evaporator air duct (111) and the condenser air duct (121) are connected to form the main air duct; The refrigerant in the evaporator refrigerant tube is used for heat exchange with the air flowing through the evaporator air duct (111) and dehumidifies the air; the refrigerant in the condenser refrigerant tube is used for heat exchange with the air flowing through the condenser air duct (121) and heats the air.

10. The dehumidifier according to any one of claims 1 to 9, characterized in that: The target space (44) is a room or a space formed by a commercial chiller.

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