Heat exchange water tank capable of achieving double-area temperature control

Abstract

The utility model discloses a heat exchange water tank capable of double-zone temperature control, which comprises a casing, independent double water tanks are mounted in the casing, the double water tanks comprise an upper water tank and a lower water tank, the upper water tank is used for storing and replenishing water, the lower water tank is positioned below the upper water tank and is used for water circulation with a blanket body, and a support tank for sound insulation is surrounded outside the lower water tank; the refrigerating and heating device comprises a heating assembly and a heat exchange assembly, the heating assembly comprises a plurality of PTC heating modules located at the lower end of the lower water tank, and the heat exchange assembly comprises an evaporator arranged in the lower water tank; the heat exchange assembly performs heat exchange on the water in the lower water tank by a gaseous refrigerant through the evaporator so as to reduce the water temperature as cold water; and the plurality of PTC heating modules form a plurality of independent temperature zones. According to the utility model, the compressor refrigeration technology is combined with the traditional water heating blanket main machine, so that a cooling and heating blanket product capable of refrigerating and heating is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control equipment, in particular to a water exchange tank capable of dual-zone temperature control. Background Art

[0002] Currently, the main products on the market are water-heating blankets, which are bed appliances that can only heat water blankets. Home appliances that can both heat and cool are rare in China due to their high costs and long R&D cycles.

[0003] Cooling and heating blankets fall into two technical categories. One is semiconductor refrigeration, which consists of multiple semiconductor chips and a heat sink. Its advantages are small size, low noise, and lower cost, but its cooling capacity is limited by the power consumption and heat sink requirements, making it difficult to increase, and it is generally used in small refrigeration equipment. The other is compressor refrigeration (such as the heating and cooling blanket with a constant temperature control device disclosed in application publication number CN117356883A). Its biggest advantage is high cooling capacity and rapid cooling, but its disadvantages are high cost, complex system technology, and considerable compressor noise. Utility Model Content

[0004] The purpose of the present utility model is to provide a water exchange tank capable of dual-zone temperature control, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A dual-zone temperature-controlled water exchange tank is applied to a heating and cooling blanket with a hot and cold constant temperature control device. The heating and cooling blanket with a hot and cold constant temperature control device comprises:

[0007] A casing, wherein an independent double water tank and a pump group are installed in the casing, the double water tank includes an upper water tank for storing and replenishing water and a lower water tank located below the upper water tank and used for water circulation with the blanket body;

[0008] A cooling and heating device, comprising a heating component and a heat exchange component, wherein the heating component comprises a plurality of PTC heating modules located at the lower end of a lower water tank, and the heat exchange component comprises an evaporator placed in the lower water tank;

[0009] The heat exchange component uses the gaseous refrigerant to exchange heat with the water in the lower water tank through the evaporator to reduce the water temperature and use it as cold water;

[0010] The small cycle composed of the pump group and the PTC forms multiple independent temperature zones, which are used to independently compensate for the heating of cold water, so as to accurately control the temperature zones for users with different hot and cold needs. The temperature zones are connected to the corresponding temperature zones of the blanket body, and the cold water enters the blanket body temperature zone through the temperature zones.

[0011] Furthermore, the multiple PTC heating modules include at least PTC heating module I and PTC heating module II, the lower water tank is connected to the pump group, the pump group includes at least pump I and pump II, and the pump I and pump II are connected to the PTC heating module I and PTC heating module II respectively through the water pipe I and the water pipe II;

[0012] The PTC heating module I and the PTC heating module II are respectively connected to the water outlet pipe group, the water outlet pipe group is connected to the blanket body, and the blanket body is connected to the respective temperature zones in the lower water tank through the return water circulation pipe group.

[0013] Furthermore, the outlet pipe group includes an outlet inner pipe I, an outlet inner pipe II, an outlet outer pipe I, and an outlet outer pipe II; the return water circulation pipe group includes a circulation inner pipe I, a circulation inner pipe II, a circulation outer pipe I, and a circulation outer pipe II;

[0014] One end of the water outlet inner tube I and the water outlet inner tube II are connected to the PTC heating module I and the PTC heating module II respectively, and the other end is connected to the pipe joint installed on the casing;

[0015] One end of the water outlet outer pipe I and the water outlet outer pipe II is connected to the pipe joint, and the other end is connected to the blanket body;

[0016] One end of the circulating inner pipe I and the circulating inner pipe II is connected to the lower water tank, and the other end is connected to the pipe joint;

[0017] One end of the circulating outer pipe I and the circulating outer pipe II is connected to the pipe joint, and the other end is connected to the blanket body.

[0018] Furthermore, a control structure for preventing water backflow from the blanket body is provided between the upper water tank and the lower water tank;

[0019] An exhaust structure is provided between the upper water tank and the lower water tank.

[0020] Furthermore, the blanket body backflow prevention control structure includes a pump III and a water supply pipe. The pump III is connected to the upper water tank. One end of the water supply pipe is connected to the pump III and the other end is connected to the lower water tank. The water supply pipe is provided with a one-way valve.

[0021] Furthermore, the exhaust structure includes an exhaust pipe I and a normally closed solenoid valve located on the exhaust pipe I. One end of the exhaust pipe I is connected to the upper water tank, and the other end is connected to the lower water tank.

[0022] Furthermore, the heat exchange component also includes a compressor, a condenser, a filter and a gas-liquid separator placed in the casing. The compressor and the condenser are connected through an exhaust pipe II. One end of the filter is connected to the condenser, and the other end is connected to the evaporator through a throttling device. One end of the gas-liquid separator is connected to the compressor, and the other end is connected to the evaporator through a return pipe.

[0023] Furthermore, a heat dissipation component for dissipating heat for the equipment is installed in the casing, and a support box for sound insulation is surrounded by the lower water tank. The support box is placed on the condenser, and a guide hole is provided at the bottom of the support box. The heat dissipation component is close to the condenser.

[0024] Furthermore, the blanket body temperature zone has the same number as the temperature zone, and the blanket body temperature zone includes at least temperature zone I and temperature zone II. The temperature zone I and temperature zone II are respectively equipped with interface I and interface II. The interface I is connected to the water outlet outer pipe I and the circulation outer pipe I, and the interface II is connected to the water outlet outer pipe II and the circulation outer pipe II.

[0025] Furthermore, the upper and lower sides of the evaporator are pressed tightly against the spacers I on the upper and lower inner walls of the lower water tank, and the middle of the evaporator is provided with a spacer II as a support.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This utility model uses a foam support box to support the lower water tank, improving support. It can also insulate the lower water tank and soundproof the pump unit, which is significant in heating mode. It also collects condensed water from the lower water tank and diverts it through several diversion holes at the bottom of the foam box to the condenser below for auxiliary cooling and consumption.

[0028] The utility model has a unique refrigeration dual-zone temperature control technology: because the variable of the refrigeration system is 1, the evaporator is also one, the lower water tank is connected to the pump group, the pump group has multiple pumps, and the area corresponding to each PTC heating module and a pump is a temperature zone of the lower water tank. In this way, it can be divided into multiple independent temperature zones, and the number of temperature zones corresponds to the blanket body temperature zone connected to the blanket body, and then the speed adjustment of the pump group and the heating compensation of the PTC heating module are controlled by software calculation to control the temperature of the blanket body temperature zone to be the same as the temperature set by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the present utility model.

[0030] Figure 2 This is a schematic diagram of the utility model with a portion of the casing removed.

[0031] Figure 3 For this utility model Figure 2 Schematic diagram from another perspective.

[0032] Figure 4 For this utility model Figure 2 Schematic diagram after removing the support box.

[0033] Figure 5 For this utility model Figure 4 Schematic diagram with the lower water tank removed.

[0034] Figure 6 This is a schematic diagram of installing spacer II on the evaporator of the utility model.

[0035] Figure 7 For this utility model Figure 2 Schematic diagram with the heat dissipation components and part of the condenser removed.

[0036] Figure 8 For this utility model Figure 2 Cross-sectional view at AA.

[0037] Figure 9 This is a schematic diagram of the internal structure of the blanket body of the present invention.

[0038] In the figure: 1- housing, 2- double water tanks, 3- upper water tank, 4- lower water tank, 5- blanket body backwater prevention control structure, 6- pump III, 7- one-way valve, 8- water supply pipe, 9- exhaust structure, 10- exhaust pipe I, 11- normally closed solenoid valve, 12- support box, 13- diversion hole, 14- spacer I, 15- PTC heating module I, 16- evaporator, 17- pump I, 18- pump II, 19- PTC heating module II, 20- water supply pipe I, 21- water supply pipe II, 22- water outlet inner pipe I, 23- water outlet inner pipe II, 24- water outlet outer pipe I, 25- water outer pipe II, 26- circulation outer pipe I, 27- circulation outer pipe II, 28- circulation inner pipe I, 29 -Circulation inner tube II, 30-heat exchange component, 31-compressor, 32-exhaust pipe II, 33-condenser, 34-filter, 35-throttling device, 36-return liquid pipe, 37-gas-liquid separator, 38-heat dissipation component, 39-blanket, 40-upper layer, 41-bottom layer, 42-middle layer, 43-interface I, 44-interface II, 45-elastic bandage, 46-control panel, 47-temperature zone II, 48-recessed handle, 49-heat dissipation grid, 50-power cord, 51-heating component, 52-pipe joint, 53-temperature zone I, 54-water inlet cover, 55-heat dissipation copper tube, 56-spacer II, 57-anti-slip pad, 58-silicone ring, 59-sponge layer. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "upper end", "lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end", etc., indicating the orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "sleeved," "socketed," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] See also Figures 1 to 9 , the utility model provides a technical solution:

[0043] A cooling and heating blanket with a hot and cold constant temperature control device, comprising:

[0044] A housing 1 is provided with an independent double water tank 2, which includes an upper water tank 3 for storing and replenishing water, and a lower water tank 4 located below the upper water tank 3 and for replenishing water to the blanket body 39;

[0045] A cooling and heating device includes a heating component 51 and a heat exchange component 30. The heating component 51 includes multiple PTC heating modules located at the lower end of the lower water tank 4. This embodiment is described as having two PTC heating modules, namely, PTC heating module I 15 and PTC heating module II 19. The heat exchange component 30 includes an evaporator 16 located in the lower water tank 4.

[0046] The heat exchange assembly 30 exchanges heat with the water in the lower water tank 4 via the evaporator 16 to reduce the water temperature and serve as cold water.

[0047] The cold water is independently heated by the PTC heating module I 15 and the PTC heating module II 19 to form two independent temperature zones, which are then used to connect the corresponding temperature zones of the blanket body 39 .

[0048] Specifically, the lower water tank 4 is connected to the pump group located in the casing 1. The number of pump groups is the same as the number of PTC heating modules. The pump group includes at least pump I 17 and pump II 18. The pump I 17 and pump II 18 are connected to the PTC heating module I 15 and the PTC heating module II 19 respectively through the water pipe I 20 and the water pipe II 21.

[0049] The PTC heating module I 15 and the PTC heating module II 19 are respectively connected to the water outlet pipe group, and the water outlet pipe group is connected to the blanket body 39, and the blanket body 39 is connected to the lower water tank 4 through the return water circulation pipe group.

[0050] Specifically, such as Figure 3 As shown, the outlet pipe group includes an outlet inner pipe I 22, an outlet inner pipe II 23, an outlet outer pipe I 24, and an outlet outer pipe II 25, and the return water circulation pipe group includes a circulation inner pipe I 28, a circulation inner pipe II 29, a circulation outer pipe I 26, and a circulation outer pipe II 27;

[0051] One end of the water outlet inner tube I 22 and the water outlet inner tube II 23 are connected to the PTC heating module I 15 and the PTC heating module II 19 respectively, and the other end is connected to the pipe joint 52 installed on the housing 1;

[0052] One end of the water outlet outer pipe I 24 and the water outlet outer pipe II 25 are connected to the pipe joint 52, and the other end is connected to the blanket body 39;

[0053] One end of the inner circulation pipe I 28 and the inner circulation pipe II 29 is connected to the lower water tank 4, and the other end is connected to the pipe joint 52;

[0054] One end of the circulation outer pipe I 26 and the circulation outer pipe II 27 are connected to the pipe joint 52 , and the other end is connected to the blanket body 39 .

[0055] The blanket body 39 has temperature zones that are not connected to each other. The number of temperature zones is the same as the number of PTC heating modules or pump groups. The temperature zones include at least temperature zone I 53 and temperature zone II 47. The temperature zones I 53 and II 47 are respectively installed with interfaces I 43 and II 44. The interface I 43 is connected to the water outlet outer pipe I 24 and the circulation outer pipe I 26, and the interface II 44 is connected to the water outlet outer pipe II 25 and the circulation outer pipe II 27.

[0056] In the present invention, heating is achieved through a pump group. In this embodiment, pump I 17 and pump II 18 guide the room temperature water in the lower water tank 4 to the PTC heating module I 15 and the PTC heating module II 19 for heating, and then the water enters the blanket body 39 and the return water circulation pipe group and returns to the lower water tank 4 for circulation and heat exchange.

[0057] Specifically, the pump I 17 guides the normal temperature water in the lower water tank 4 to the PTC heating module I 15 and then into the temperature zone of the blanket body 39 and then circulates back to the lower water tank 4 as an example. The circulation process of the pump II 18 will not be described in detail.

[0058] When pump I 17 directs water through water delivery pipe I 20 to PTC heating module I 15 for heating, the water outlet inner pipe I 22 is then sent to pipe joint 52. Pipe joint 52 has a sufficient number of independent joint ports. Water outlet outer pipe I 24 is connected to pipe joint 52. In this way, the heated water is sent to temperature zone I 53 through water outlet outer pipe I 24, and then sent to circulation inner pipe I 28 connected to pipe joint 52 through ring outer pipe I 26, and finally redirected to lower water tank 4.

[0059] In the utility model, a plurality of small water circuits formed by the PTC heating modules and the pump form a plurality of independent temperature zones.

[0060] In the present invention, a control structure 5 for preventing water from returning to the blanket body 39 is provided between the upper water tank 3 and the lower water tank 4 ; and an exhaust structure 9 is provided between the upper water tank 3 and the lower water tank 4 .

[0061] Specifically, the blanket body 39 backflow prevention control structure 5 includes a pump III 6 and a water supply pipe 8. The pump III 6 is connected to the upper water tank 3. One end of the water supply pipe 8 is connected to the pump III 6 and the other end is connected to the lower water tank 4. The water supply pipe 8 has a one-way valve 7.

[0062] Specifically, the exhaust structure 9 includes an exhaust pipe Ⅰ10 and a normally closed solenoid valve 11 located on the exhaust pipe Ⅰ10 . One end of the exhaust pipe Ⅰ10 is connected to the upper water tank 3 , and the other end is connected to the lower water tank 4 .

[0063] In the design of double water tanks 2, the hot and cold cycles are only carried out in the lower water tank 4, and the upper water tank 3 is only used to replenish water to the lower water tank 4 and the blanket body 39. The advantages of this are as follows:

[0064] 1. Hot water does not come into direct contact with the user to avoid scalding;

[0065] 2. The water exchange tank (i.e. the aforementioned lower water tank 4) where the evaporator 16 is located can be made as small as possible to reduce the amount of heating and cooling water to reduce power consumption and initial temperature rise and fall time;

[0066] 3. Two water tanks: There is a control structure between the upper water tank 3 and the lower water tank 4 to prevent the blanket body from backflowing. This prevents the blanket body 39 from expanding and contracting due to the pressure of the pump group (i.e., the aforementioned pump I 17 and pump II 18) after the main machine is shut down, and water will flow back to the water tank from the return water circulation pipe group, causing overflow.

[0067] There are generally two technical approaches to water blankets 39. One approach involves placing (PVC or TPU) tubes in an S-shaped pattern on the blanket 39. This method is relatively inexpensive, has a low coefficient of expansion, and effectively suppresses water flow. However, it is difficult to conduct heat evenly, and the material is relatively rigid and lacks a firm feel. The other approach involves high-frequency pressing. This process allows for excellent control of the width and uniformity of the water channels. The blanket fabric is relatively thin, providing a good feel, and is formed by pressing two sheets of fabric together using a mold. However, the disadvantage is that, due to the high-frequency pressing process, the blanket distributes water evenly, but the material has a tensile coefficient, and the water channels will expand slightly due to the pressure of the water pump. Furthermore, in some product scenarios, the main unit is placed below the blanket. Within a few minutes after shutdown, the blanket loses the force of the water pump, and due to gravity and material shrinkage, the water in the blanket will flow into the main unit's water tank, causing the water inlet to overflow.

[0068] In order to solve the problem that the high-frequency pressed blanket loses the force of the water pump within a few minutes after the machine is turned off, the water in the blanket will flow into the main machine water tank due to gravity and material shrinkage, thus causing the water in the water inlet to overflow, the utility model is as follows Figure 2 As shown, the design features a dual upper and lower water tank 2. The upper water tank 3 is used for water storage and replenishment, while the lower water tank 4 houses an evaporator 16, which has a serpentine coil or spiral structure. The cooling and heating cycles are performed in the lower water tank 4. A pump assembly pumps the hot and cold water from the lower water tank 4 to a blanket 39, which then returns to the lower water tank 4 via a return water circulation pipe assembly. The upper and lower water tanks 3 and 4 are connected by two pipes. One is a water supply pipe 8, which has a one-way valve 7 and is connected to a pump III 6. This pipe can only deliver water to the lower water tank 4, irreversibly. The other is an exhaust pipe I 10, connected to a normally closed solenoid valve 11. This solenoid valve is software-controlled and opens only when pump III 6 is on. Water flows from the upper water tank 3 to the lower water tank 4. Because the lower water tank 4 is sealed, air must be expelled before water can enter. Controlled by software, in heating mode, the pipes of the blanket body 39 (return water circulation pipe group) and the lower water tank 4 expand due to heat. At this time, the solenoid valve needs to be opened for a few seconds to exhaust and reduce the pressure of the lower water tank 4 to prevent water leakage caused by excessive pressure in the blanket body 39 and the lower water tank 4.

[0069] like Figure 3 As shown, two sections of copper tubes are led out of the evaporator 16, slightly extending outside the lower water tank 4, and are tightly sealed with two silicone rings 58 to achieve a seal with the lower water tank 4. The two sections of copper tubes are led out for welding with the throttling device 35 (the throttling device is preferably a capillary tube) and the return pipe 26.

[0070] Specifically, the heat exchange component 30 also includes a compressor 31, a condenser 33, a filter 34 and a gas-liquid separator 37 placed in the casing 1. The compressor 31 and the condenser 33 are connected by an exhaust pipe II 32. One end of the filter 34 is connected to the condenser 33, and the other end is connected to the evaporator 16 through a throttling device 35. One end of the gas-liquid separator 37 is connected to the compressor 31, and the other end is connected to the evaporator 16 through a return liquid pipe 36.

[0071] In the present invention, a compressor 31 is built into the casing 1 and, by using compressor refrigeration technology, cooperates with the blanket body 39 to achieve a cooling and heating blanket product that can both cool and heat.

[0072] Specifically, a heat dissipation component 38 for dissipating heat for the equipment is installed in the casing 1, and the lower water tank 4 is surrounded by a support box 12 for sound insulation. The support box 12 is placed on the condenser 33, and the bottom of the support box 12 has a guide hole 13, and the heat dissipation component 38 is close to the condenser 33.

[0073] Specifically, the upper and lower sides of the evaporator 16 are tightly pressed against the partition (foamed silica gel) sheets I14 on the upper and lower inner walls of the lower water tank 4, and the middle of the evaporator 16 is provided with a (foamed silica gel) sheet II56 as a support.

[0074] The support box 12 is made of foam and has the following functions:

[0075] Support the lower water tank 4 to improve support;

[0076] Insulate the lower water tank 4;

[0077] Soundproofing the pump group (Pump I 17 and Pump II 18), which has a significant effect in heating mode;

[0078] The condensed water generated by the collection water tank (lower water tank 4) is collected.

[0079] The evaporator is clamped and fixed in the lower water tank 4 by two spacers Ⅰ14.

[0080] The condensed water is directed to the condenser 33 below through several guide holes 13 at the bottom of the foam piece for auxiliary cooling and consumption.

[0081] like Figure 4 、 Figure 5 and Figure 7As shown, the heat dissipation component 38 gives priority to fan heat dissipation, the condenser 33 is close to the fan, and a portion of the bottom of the support box 12 is placed on the fan and a portion is placed on the condenser 33, and the guide hole 13 is aligned with the condenser 33. It is known from the prior art that the condenser 33 uses multiple layers of heat sinks stacked one on top of the other, and then a heat dissipation copper tube 55 is used to penetrate the stacked heat sinks. Therefore, when the condensed water drips through the guide hole 13 and flows down along the heat sink (a small amount drips on the copper tube), it is used to dissipate heat for the condenser 33, which not only consumes the condensed water, but also prevents excessive accumulation from overflowing from the support box 12. Placing a spacer II 56 in the middle of the evaporator 16 not only serves as a support to improve the support for the evaporator 16, but also avoids vibration of the evaporator 16 during cooling and heating, thereby ensuring more stable operation.

[0082] The present invention has a unique dual-zone refrigeration temperature control technology: because the variable of the refrigeration system is 1, and the evaporator 16 is also one, how to divide a lower water tank 4 into multiple temperature zones (or temperature zones)? In this embodiment, there are two temperature zones, namely, the two temperature zones corresponding to the PTC heating module I 15 (or pump I 17) and the PTC heating module II 19 (or pump II 18), which are the two blanket temperature zones of the blanket 39: the temperature zone I 53 and the temperature zone II 47 are connected correspondingly, so as to perform refrigeration temperature control. Our method is to use the spacer II 56 to separate the coil into two zones: Figure 6 As shown, the area on the left side of the diaphragm II 56 is connected to the pump I 17 in the pump group, and the area on the right side of the diaphragm II 56 is connected to the pump II 18 in the pump group. This is the separation into two areas. If the number of pump groups (and PTC heating modules) increases accordingly, the temperature zones will also increase accordingly.

[0083] Of course, it should be noted that the spacer II 56 is not required to exist. The number of temperature zones is determined by the specific number of PTC heating modules (and pump groups), that is, how many independent PTC heating modules (and pumps) there are. Each pump is connected to the lower water tank 4, so that each pump is not connected to each other. In this way, each PTC heating module (and pump) will correspond to a certain number of temperature zones, and then the water in the lower water tank 4 will be pumped to the corresponding PTC heating modules for heating, and then sent to the corresponding blanket temperature zone on the blanket 39.

[0084] The evaporator 16 is installed in the water tank. Due to the pump group and the PTC heating module, it is naturally divided into multiple (two) independent temperature zones. Then, the software calculates and controls the speed adjustment of the pump group and the heating compensation of the PTC heating module to control the temperature of the two blanket temperature zones of the blanket 39 to be the same as the temperature set by the user.

[0085] The heat exchange assembly 30 serves as a refrigeration system, and its working sequence is as follows:

[0086] Exhaust pipe II 32, the high-temperature and high-pressure gaseous refrigerant output from the compressor 31 enters the condenser 33 through the exhaust pipe II 32 and becomes a low-temperature and high-pressure state. It passes through the filter 34 and comes to the throttling device 35 (capillary tube). The refrigerant passing through the capillary tube becomes a low-temperature and low-pressure state and comes to the evaporator 16 to exchange heat with the liquid in the lower water tank 4, thereby performing refrigeration. After coming out, it goes to the return liquid pipe 36 and then enters the gas-liquid separator 37 inside the compressor 31. This is a refrigeration system cycle process.

[0087] like Figure 1 and Figure 9 As shown, the blanket body 39 is placed on the bed for use. The blanket body 39 includes an upper layer 40, a bottom layer 41 and a middle layer 42. The upper layer 40 is made of lyocell fabric composited with TPU film, the bottom layer 41 is pongee fabric composited with PU coated cloth and drop-molded transparent silicone for anti-slip, and there are elastic straps 45 at the four corners of the bottom to help the blanket body 39 better fix to the corners of the mattress. The middle layer 42 is a water channel layer, and the blanket body 39 is fixed by tightly sewn edging cloth on all sides.

[0088] The water channel layer is made of two sheets of finely ground peach skin fabric welded together using a high-frequency welding process to form the waterway. Ports I 43 and II 44 of the water channel layer serve as inlets and outlets, each with a spout design. The spout is sandwiched between two layers of PVC and welded tightly. The spouts connect to the outlet and return pipes, respectively.

[0089] In cooling mode, if the air humidity is high and the temperature difference between the ambient temperature and the blanket body 39 is large, condensation is very likely to form on the surface of the blanket's water path layer. To solve this problem, we designed the water path layer to be completely isolated from the air outside the blanket body 39. Therefore, the upper and lower layers of the blanket body fabric need to be composited with TPU and PU film to isolate moisture, keep the water path layer dry, reduce mold and odor on the blanket body, and provide a better user experience.

[0090] A sponge layer 59 is provided between the bottom layer 41 and the middle layer 42. The sponge is 2 cm thick and acts as a temperature insulator, increasing the comfort level and preventing the cold air from penetrating downwards. The peach skin velvet is brushed for a higher softness.

[0091] While pure PVC welding solutions are available on the market, this material softens when heated, and the water channels expand when subjected to pressure from the main unit's water pump, leading to the following issues. PVC water channels with a peach-skin finish offer improved deformation resistance, increased tear and stretch resistance, and greater stability, significantly improving the following three issues.

[0092] Problem 1: The pipes are very thick and it is uncomfortable to lie on them;

[0093] Problem 2: The amount of water required will increase, which will increase the heating and cooling capacity requirements and affect the heating and cooling speed;

[0094] Question 3: When the host is shut down, the water pump's work stops and the host will have a strong return water pressure. If the host does not have a backflow prevention structure, water will overflow from the water tank port.

[0095] The high-frequency equipment has upper and lower molds. The fabric is placed in the center and pressed into the required water channels and shape through the patterns on the mold, thereby forming the blanket body 39.

[0096] In the present invention, the number of temperature zones of the blanket body 39 corresponds to the temperature zones of the lower water tank 4 and they are connected accordingly. Figure 9 As shown, here, two temperature zones are used as an example for explanation, and the two temperature zones that are not connected to each other are temperature zone I 53 and temperature zone II 47. Temperature zone I 53 is connected to the outlet external pipe I 24 of the outlet pipe group and the circulation external pipe I 26 of the return water circulation pipe group through interface I 43, thereby achieving communication with one of the two temperature zones of the lower water tank 4. Similarly, temperature zone II 47 is connected to the outlet external pipe II 25 of the outlet pipe group and the circulation external pipe II 27 of the return water circulation pipe group through interface II 44, thereby achieving communication with the other of the two temperature zones of the lower water tank 4.

[0097] The parts not described in this utility model are prior art.

[0098] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water exchange tank with dual-zone temperature control, characterized in that: include: A casing (1), wherein an independent double water tank (2) and a pump group are installed in the casing (1), the double water tank (2) comprises an upper water tank (3) for storing and replenishing water, and a lower water tank (4) located below the upper water tank (3) and used for water circulation with the blanket body (39), the lower water tank (4) being surrounded by a support box (12) for sound insulation; A cooling and heating device, comprising a heating component (51) and a heat exchange component (30), wherein the heating component (51) comprises a plurality of PTC heating modules located at the lower end of a lower water tank (4), and the heat exchange component (30) comprises an evaporator (16) disposed in the lower water tank (4); The heat exchange component (30) uses the gaseous refrigerant to exchange heat with the water in the lower water tank (4) via the evaporator (16), thereby reducing the water temperature and forming cold water; The pump group and PTC form an independent temperature zone small circulation to accurately control the temperature for users with different cooling and heating needs.

2. A dual-zone temperature-controlled water exchange tank according to claim 1, characterized in that: The plurality of PTC heating modules at least include a PTC heating module I (15) and a PTC heating module II (19), the lower water tank (4) is connected to a pump group, the pump group at least includes a pump I (17) and a pump II (18), and the pump I (17) and the pump II (18) are respectively connected to the PTC heating module I (15) and the PTC heating module II (19) via a water delivery pipe I (20) and a water delivery pipe II (21); The PTC heating module I (15) and the PTC heating module II (19) are respectively connected to the water outlet pipe group, and the water outlet pipe group is connected to the blanket body (39), and the blanket body (39) is connected to the lower water tank (4) through the return water circulation pipe group.

3. A dual-zone temperature-controlled water exchange tank according to claim 2, characterized in that: The outlet pipe group includes an outlet inner pipe I (22), an outlet inner pipe II (23), an outlet outer pipe I (24), and an outlet outer pipe II (25); the return water circulation pipe group includes a circulation inner pipe I (28), a circulation inner pipe II (29), a circulation outer pipe I (26), and a circulation outer pipe II (27); One end of the water outlet inner pipe I (22) and the water outlet inner pipe II (23) is connected to the PTC heating module I (15) and the PTC heating module II (19) respectively, and the other end is connected to the pipe joint (52) installed on the casing (1); One end of the water outlet outer pipe I (24) and the water outlet outer pipe II (25) are connected to the pipe joint (52), and the other end is connected to the blanket body (39); One end of the inner circulation pipe I (28) and the inner circulation pipe II (29) is connected to the lower water tank (4), and the other end is connected to the pipe joint (52); One end of the circulating outer pipe I (26) and the circulating outer pipe II (27) is connected to the pipe joint (52), and the other end is connected to the blanket body (39).

4. The dual-zone temperature-controlled water exchange tank according to claim 1, characterized in that: The heat exchange assembly (30) further comprises a compressor (31), a condenser (33), a filter (34) and a gas-liquid separator (37) disposed in the casing (1); the compressor (31) and the condenser (33) are connected via an exhaust pipe II (32); one end of the filter (34) is connected to the condenser (33), and the other end is connected to the evaporator (16) via a throttling device (35); one end of the gas-liquid separator (37) is connected to the compressor (31), and the other end is connected to the evaporator (16) via a liquid return pipe (36).

5. The dual-zone temperature-controllable water exchange tank according to claim 3, characterized in that: A heat dissipation component (38) for dissipating heat for the device is installed in the casing (1), the support box (12) is placed on the condenser (33), and the bottom of the support box (12) has a guide hole (13), and the heat dissipation component (38) is close to the condenser (33).

6. The dual-zone temperature-controlled water exchange tank according to claim 1, characterized in that: The upper and lower sides of the evaporator (16) are tightly pressed against the spacers I (14) on the upper and lower inner walls of the lower water tank (4), and the middle of the evaporator is provided with a spacer II (56) as a support.

7. The dual-zone temperature-controlled water exchange tank according to claim 1, characterized in that: The evaporator (16) is in the shape of a serpentine coil or a spiral structure.

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