CN213119494U

CN213119494U - Temperature control device of bathtub

Info

Publication number: CN213119494U
Application number: CN202022198697.1U
Authority: CN
Inventors: 左晓华
Original assignee: Taizhou Aifeiling Innovation Technology Co ltd
Current assignee: AIFEILING SANITARY WARES TECHNOLOGY GROUP Co.,Ltd.
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-04
Anticipated expiration: 2030-09-29

Abstract

The utility model belongs to the technical field of the bathtub, a temperature regulating device of bathtub is related to, the bathtub includes bathtub bottom and bathtub lateral wall, and bathtub bottom and bathtub lateral wall are provided with temperature regulating device, a serial communication port, temperature regulating device includes multiunit heating plate, sets up respectively in the bottom zone of heating, no water heating district and the zone of heating that soaks, the bottom zone of heating is located the bathtub bottom, and no water heating district is located bathtub lateral wall upper portion, the bottom zone of heating, no water heating district and the zone of heating that soaks adopt two way temperature control system at least, and the temperature control system of no water heating district sets up alone. The utility model provides a temperature regulating device of bathtub can control the temperature of the different regions of bathtub respectively, uses safelyr, feels more comfortable.

Description

Temperature control device of bathtub

Technical Field

The utility model belongs to the technical field of the bathtub, a temperature regulating device of bathtub is related to.

Background

The constant temperature heating mode of the current constant temperature bathtub is divided into two main types, one type is that bath water in the bathtub is directly heated, and the other type is that the bath water is heated from the outside of the bathtub. The direct heating bath water in the tank is easy to store water due to the pipeline and the water pump assembly, particularly, the water pump cannot drain water after bathing, bacteria can grow in the water pump, the iron water pump can rust, and the heating element and the water pump are even worse in electric leakage risk, because the heating element and the water pump are directly contacted with the bath water, once the heating element or the water pump is damaged and the electric leakage directly influences the life of people, although the electric leakage protection circuit is arranged, the electric leakage protection circuit is protected after electric shock is firstly carried out, and in case that the protection circuit is also damaged, the life risk is caused.

The external heating type has the advantages that all electric appliances are not contacted with bath water, safety and sanitation are realized, the external heating type is divided into two types, one type is water circulation heating, the other type is dry heating, independent multi-section temperature control is not good in water circulation heating, the cost of water circulation heating outside the tank is high, and the water circulation heating is not easy to clean and pollute. Because most bathtubs are formed by gluing acrylic with glass fiber by epoxy resin, the wall of the bathtub is thick and has extremely poor thermal conductivity, large thermal conductivity temperature difference is formed inside and outside the wall of the bathtub, some parts of the wall of the bathtub are soaked and some parts of the wall of the bathtub are not soaked, the temperature of the parts which are not soaked is not more than 45 ℃, otherwise, a human body feels hot when touching, the temperature of the soaked parts is high, and the parts can be heated optimally only by independent temperature control.

The most difficult technical problem of heating outside the cylinder is temperature control, because the thermal conductivity of the cylinder wall is poor, the long heat conduction time difference seriously affects the PID operation of the temperature controller, if the temperature probe senses that the water temperature reaches or exceeds a set value, the PID can send out the heating quantity reduction or stop heating, but because the heat conduction time difference of the cylinder wall and the internal and external temperature difference are large, the temperature sensor can continue to heat up, the heating quantity can continue to reduce or stop, the heating quantity should be increased when the temperature of the outer wall is lower than the set value, because the reason of the heat conduction time difference is sensed for a long time, the temperature outside the cylinder can be greatly reduced, the temperature fluctuation is large, although the PID can calculate the accurate heating quantity at last, the time is long, and people have already bathed when the temperature is stable. The cylinder body is seriously damaged by large temperature fluctuation, which is the main reason that the acrylic material is difficult to be heated outside the cylinder, the acrylic material begins to soften at 70 ℃, the reinforcing materials of the acrylic material are glass fiber and epoxy resin, the thermal expansion coefficients of the glass fiber and the epoxy resin are greatly different, and the acrylic casing layer and the reinforcing layer are separated to be damaged by layering due to large temperature difference and non-uniform temperature. The large heating fluctuation can cause excessive heating and excessive temperature rise during heating, the outer wall is close to 70 ℃, uneven places are slightly over 70 ℃, local delamination can be started in places with high temperature, then the glass cracks are cracked along the cracks like glass cracks, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a temperature control device of bathtub to the not enough of prior art, can control the temperature of the different regions of bathtub respectively, use safelyr, feel more comfortable.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a temperature regulating device of bathtub, the bathtub includes bathtub bottom and bathtub lateral wall, and bathtub bottom and bathtub lateral wall are provided with temperature regulating device, its characterized in that, temperature regulating device includes that the multiunit generates heat the piece, sets up respectively in bottom heating zone, anhydrous heating zone and the zone of heating that soaks, the bottom heating zone is located the bathtub bottom, and anhydrous heating zone is located bathtub lateral wall upper portion, the bottom heating zone, anhydrous heating zone and the zone of heating that soaks adopt two way temperature control system at least, and the temperature control system of anhydrous heating zone sets up alone.

The bottom heating zone, the non-water heating zone and the soaking heating zone are divided according to actual use states, generally, a part below the height of the side surface of the cylinder body of about 25cm is a water long-term soaking part, and a part above the height of the side surface of the cylinder body of about 25cm is mostly a non-water zone. The power of the heating sheet is designed according to the area size and the position, and the bottom heating area and the water immersion heating area are the main heating area with the maximum power.

In the temperature control device for a bathtub, the water immersion heating area is located at the lower part of the side wall of the bathtub, the power per unit area of the heating sheet of the bottom heating area is not less than the power per unit area of the heating sheet of the water immersion heating area, and the power per unit area of the heating sheet of the water immersion heating area is not less than the power per unit area of the heating sheet of the non-water heating area.

In the temperature control device for the bathtub, the heating sheet is made by wrapping a heating wire with an aluminum foil. The multiple groups of heating pieces of the waterless heating area and the soaking heating area can be covered by the same aluminum foil piece.

In the temperature control device of the bathtub, the heating sheet is adhered to the outer wall of the bathtub.

In the above temperature control device for a bathtub, each group of heating sheets includes one heating sheet or a plurality of heating sheets. Each heating area can adopt a group of heating sheets or a plurality of groups of heating sheets connected in parallel.

In the above temperature control device for a bathtub, the heating sheets of the bottom heating zone, the non-water heating zone and the soaking heating zone adopt respective independent multi-channel temperature control systems; or the heating pieces of the bottom heating area and the soaking heating area adopt one temperature control system, and the heating piece of the non-water heating area adopts the other temperature control system.

In the temperature control device for the bathtub, a temperature probe for detecting the temperature of the heating sheet is arranged between the heating sheet and the outer wall of the bathtub, and a temperature probe for detecting the temperature of water is arranged in the bathtub.

In the temperature control device of the bathtub, the temperature of the waterless heating area is controlled to be 36-45 ℃.

In the above temperature control device for a bathtub, an over-temperature protection is provided in the temperature control circuit of the heating sheet, and a set value of the over-temperature protection is 55 ℃.

In the temperature control device of the bathtub, the temperature control system of the temperature control device is controlled by using a single chip microcomputer.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses divide the bathtub into different regions, adopt different heating schemes to the bottom zone of heating, the zone of heating that soaks are the main zone of heating for supply the heat that bathing water gived off, with anhydrous zone of heating bathtub wall, feel comfortable temperature when making bathtub wall keep contacting with the human body.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

reference numerals: 1. a bathtub; 2. a heat generating sheet; 3. a bottom heating zone; 4. an anhydrous heating zone; 5. a soaking heating zone; 6. an aluminum foil sheet; 7. a heat generating line.

Detailed Description

The invention will be further described in the following with specific embodiments in conjunction with the drawings, see fig. 1:

the utility model provides a temperature regulating device of bathtub, bathtub 1 includes bathtub bottom and bathtub lateral wall, and bathtub bottom and bathtub lateral wall are provided with temperature regulating device, temperature regulating device includes multiunit heating plate 2, sets up respectively in bottom heating zone 3, anhydrous zone of heating 4 and the zone of heating 5 that soaks, bottom heating zone 3 is located the bathtub bottom, and anhydrous zone of heating 4 is located bathtub lateral wall upper portion, and the zone of heating 5 that soaks is located bathtub lateral wall lower part, bottom heating zone 3, anhydrous zone of heating 4 and the zone of heating 5 that soaks adopt two way temperature control system at least, and the temperature control system of anhydrous zone of heating 4 sets up alone.

The bottom heating zone 3, the non-water heating zone 4 and the soaking heating zone 5 are divided according to actual use conditions, and generally, a part below about 25cm in height of the side wall of the bathtub 1 is a part for soaking water for a long time, and a part above about 25cm is mostly a non-water zone. The power of the heating plate 2 is designed according to the area size and the position, and the bottom heating area 3 and the soaking heating area 4 are the main heating area with the maximum power.

The heating sheets 2 are made by wrapping heating wires 7 with aluminum foil sheets 6, the heating sheets 2 are pasted on the outer wall of the bathtub, and each group of heating sheets 2 comprises one heating sheet 2 or a plurality of heating sheets 2. The groups of heating sheets 2 of the waterless heating area 4 and the soaking heating area 5 can be covered by the same aluminum foil. The number of the heating sheets 2 in each group is reduced as much as possible, the heating sheets 2 are divided into a plurality of combined heating sheets under the influence of the structural shape, the heating sheets 2 are easy to produce, one heating sheet 2 can be adopted at the bottom, and a plurality of heating sheets 2 are generally adopted at the side surfaces. When a heating area adopts a plurality of groups of heating sheets 2, the plurality of groups of heating sheets 2 adopt a parallel connection mode.

A temperature probe for detecting the temperature of the heating sheet 2 is arranged between the heating sheet 2 and the outer wall of the bathtub 1, and a temperature probe for detecting the water temperature is arranged in the bathtub 1.

The temperature control circuit of the heating sheet 2 is provided with an over-temperature protection, and the set value of the over-temperature protection is 55 ℃.

The temperature control system of the temperature control device is controlled by a single chip microcomputer.

The temperature of the part above 25cm of the side wall of the bathtub 1, namely the waterless heating area 4, is controlled to be 36-45 ℃ which is comfortable for human body to touch.

The waterless area has great influence on the comfort of a human body, particularly, people can feel cold when the people contact the waterless area without heating and heat preservation in winter, particularly, the waterless area can fix 40 ℃ which people feel good, but the adjustment is better, the waterless area is usually preferred to be lower in summer and higher in winter, and the temperature of 36-45 ℃ is the temperature range which is most comfortable when people contact the human body.

The design principle of the utility model is that: the heat lost by the bathtub during bathing has two parts, namely, the heat transfer loss of the bathtub wall and the water surface evaporation loss, the heat transfer loss can not be caused as long as the temperature outside the bathtub is kept the same as the water temperature in the bathtub, but the evaporation heat of the water is very large, the heat loss by evaporation is very large, more heat can be evaporated by stirring the water during bathing, the water temperature can be kept constant only by heating and supplementing from the outside of the bathtub, so the heat loss needs to be supplemented to the bathing water in the bathtub in a soaking area, most of bathtub materials adopt materials with extremely poor heat conductivity, the bathtub wall is thicker in consideration of the strength of the bathtub body, the inner wall and the outer wall of the bathtub can generate very large heat conduction temperature difference, the larger heating power is, the larger heating area is better, the temperature difference is smaller, but no water absorbs the heat of the bathtub, and the power density of the bathtub is much smaller. From the aspect of heating effect, the heating effect at the bottom of the cylinder body is the best, because the heat flows upwards, and the uniformity of the water temperature in the heating cylinder at the bottom is good, so the power density of the heating sheet at the bottom of the cylinder is required to be as large as possible, but the strength of the cylinder bottom is required to be higher than the wall thickness of the cylinder bottom, so the heat conduction temperature difference of the cylinder bottom is larger, the temperature of the cylinder wall is higher, and the cylinder body is easy to damage due to too high temperature, which needs to be comprehensively considered.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a temperature regulating device of bathtub, bathtub (1) includes bathtub bottom and bathtub lateral wall, and bathtub bottom and bathtub lateral wall are provided with temperature regulating device, its characterized in that, temperature regulating device includes multiunit heating plate (2), sets up respectively in bottom heating zone (3), anhydrous zone of heating (4) and the zone of heating of soaking (5), bottom heating zone (3) are located the bathtub bottom, and anhydrous zone of heating (4) are located bathtub lateral wall upper portion, and the zone of heating of soaking (5) are located bathtub lateral wall lower part, bottom heating zone (3), anhydrous zone of heating (4) and the zone of heating of soaking (5) adopt two way temperature control system at least, and the temperature control system of anhydrous zone of heating (4) sets up alone.

2. A temperature control apparatus for a bathtub according to claim 1, wherein the power per unit area of the heat generating sheet (2) of the bottom heating zone (3) is not less than the power per unit area of the heat generating sheet (2) of the soaking heating zone (5), and the power per unit area of the heat generating sheet (2) of the soaking heating zone (5) is not less than the power per unit area of the heat generating sheet (2) of the non-water heating zone (4).

3. A temperature control device for a bathtub according to claim 1, wherein said heat generating sheet (2) is made of an aluminum foil (6) wrapping a heat generating wire (7).

4. A temperature control apparatus for a bath according to claim 3, wherein the heat generating sheet (2) is adhered to the outer wall of the bath (1).

5. The temperature control device of the bathtub according to claim 1, wherein the heating sheets of the bottom heating zone (3), the waterless heating zone (4) and the soaking heating zone (5) adopt independent multi-path temperature control systems; or the heating sheets (2) of the bottom heating area (3) and the soaking heating area (5) adopt one path of temperature control system, and the heating sheets (2) of the non-water heating area (4) adopt the other path of temperature control system.

6. The temperature control device of the bathtub according to claim 1, characterized in that a temperature probe for detecting the temperature of the heating sheet (2) is arranged between the heating sheet (2) and the outer wall of the bathtub (1), and a temperature probe for detecting the temperature of water is arranged in the bathtub (1).

7. A bathtub temperature control device as defined in claim 1, in which the temperature of said waterless heating section (4) is controlled to be in the range of 36-45 ℃.

8. A temperature control device for a bathtub according to claim 5, characterized in that an over-temperature protection is arranged in the temperature control circuit of the heating sheet (2), and the set value of the over-temperature protection is 55 ℃.

9. A temperature control apparatus for a bath according to any one of claims 1 to 7 wherein the temperature control system of the temperature control apparatus is controlled using a single chip.